CHINA TIANYU NICKEL SCREEN CO.,LTD

TIANYU NICKEL SCREEN,Top Rotary Printing Solutions

1970-01-01 00:33:29

Jiangyin Tianyu Nickel Screen Co., Ltd. was founded in 1996. During the last years the company becomes the leading manufacturer of rotary printing screens in China. The production increased from 25’000 to 1’200’000 pieces per year.

New technologies have been introduced. The production ranges includes now lengths from 1’250 up to 3’500 mm, repeats from 640 up to 1’018, and meshes from 30 up to 195.

In 2003 Jiangyin Tianyu Nickel Screen Co., Ltd did install its new research department. We do hold various production patents.

The main focus of our company philosophy is to satisfy the demands of our customers and guarantee them consistently quality. Jiangyin Tianyu Nickel Screen Co., Ltd. pays also the most possible attention to the environment thanks modest sewage treatment equipments.

It was therefore a matter of course for Jiangyin Tianyu Nickel Screen Co., Ltd. to introduce successfully the certifications for ISO 9001-2000 and ISO 14000.

ADRESS OF THE DIRECTOR OF BOARD

Jiangyin Tianyu Nickel Screen Co., Ltd. is the Chinese leading company for manufacturing high quality products for the textile printing- and other related industries. With our annual production capacity we are in the possession to hold 40 % of the domestic market demand.

A consistently production quality, based on a motivated crew, modest technique and well maintained equipment helps us to meet the standards of our clientele. Our after sales service is prepared to support our customers any time.

During the last years Jiangyin Tianyu Nickel Screen Co., Ltd did made various investments to increase the quality of their products. The R+D-Department was reinforced with new equipment. Combined with an intensive relationship to international experts in the electroplating range advanced technologies will open new horizons for our company. A modest sewage treatment is part of our input to take care to the environmental thought of our globe.

The excellent relationship to the Government of the Western Region and the available resources of raw materials did allow us to build up in 2008 a modest production facility in Gansu Jinchang with an investment of 100 million CNY. Thanks to the support of the authorities of Gansu Jinchang and a mutual cooperation with the Nickel manufacturer Yuheng Co., Ltd. we are looking forward to a successful and prosperous future.

The aim of Jiangyin Tianyu Nickel Screen Co., Ltd is not only to supply our high-tech-products to the domestic market, with our acknowledge and our foreign partners we will be the important player on the global market as well.

Jiangyin Tianyu Nickel Screen Co., Ltd.' desire is to serve all our existing and new customers with high-tech-products and build up a long term mutual future. To reach this we are prepared for permanent efforts.

Textile Printing---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Rotary Screen/Nickel Screen/Printing Screen/Printing Cylinder, is made of raw material Nickel by Plating, Mainly Applicated in Textile rotary printing and coating, Also used for wallpaper printing and some other relative printing.

Rotary Screen/Nickel Screen/Printing Screen/Printing Cylinder, is one of the most important auxilaries for textile printing, the main technical parameters concern about Circumference, Thickness, and Open Area. The strongness and flexibility are also very important for good Rotary Screen/Nickel Screen/Printing Screen/Printing Cylinder. All these gurantee the perfect and reliable printing.

Rotary Screen/Nickel Screen/Printing Screen/Printing Cylinder, before put into the textile rotary printing machine, should be engraved first.

Textile Printing
Text ile printing involves the production of a predetermined coloured pattern on a fabric, usually with a definite repeat. It can be described as a localised form of dyeing, applying colorant to selected areas of the fabric to build up the design.

The greatest change in fashion and design that has ever occurred in European textiles was the general introduction of printed fabrics. The first printed fabrics were produced in India and China over four thousand years ago. European textile printing dates from about the tenth century. Until relatively cheap printed fabrics became available, patterns on European dress were the result of weaving or embroidery. Such clothes could only be afforded by the wealthy.

Printing Techniques
Modern procedures for printing textile goods may be traced back to the block printing of silks in ancient China. In this method a wooden block with a raised pattern on the surface was dipped into the printing colorant and then pressed face down on to fabric. The desired pattern was obtained by repeating the process using different colours. Printing by brushing colorant through thin metal stencils and the transfer of illustrations to the printed page from engraved rollers in a printing press were also widespread by the fifteenth century.

Block printing remained a practical proposition until the roller printing machine was invented by James Bell in 1783. This enabled six colours to be printed at a rate equivalent to that of 40 hand-block printers. The success of the machine depended on the hard rollers, each of which bore an engraving (i.e. an intaglio engraving, in which the depth of the recess on the roller determines the intensity of the print produced) corresponding to a particular colour component of the design. The machines were capable of continuously printing six different colours in sequence, with the rollers pressed against the fabric.

Pencilling
One of the earliest methods of textile printing was the painting of a design on the cloth using a bamboo pen or brush. The technique was widely used in India to produce a range of elaborate and beautiful designs. Indian printed fabrics began to be imported into Europe in the late sixteenth century. The designs were based upon floral motifs and these formed the basis for early European printed designs. Pencilling was used in Europe until the early nineteenth century. The method supplemented hand-block printing.

Plate Printing
From about 1752 engraved flat copper plates were used to produce printed fabrics. The design was cut into the surface of the plate and it was these lines which held the colour.

The fabric and plate were tightly clamped together in a press to transfer the design to the cloth. Plate prints were made in a single colour, usually either red, purple or blue. Extremely detailed images could be produced with the process.

Most plate prints were used as furnishing fabrics, although some small patterns were produced as dress material. Handkerchiefs commemorating political or public events were also produced in quantity. By the end of the eighteenth century plate printing had been almost completely replaced by copper roller printing.

Flat Screen Printing

This type of printing was used industrially from the 1920s to produce high quality prints in small quantities.

Initially the process was a manual one with two printers passing a rubber-edged squeegee across the screen to force the paste onto fabric. The screen then had to be lifted and moved to print the next section of the pattern. In the 1950s semi-automatic and fully automatic flat screen printing methods were developed. These cut production costs significantly.

Screen Printing
This technique is the most common form of textile printing and it involves the application of the printing paste through a fine screen placed in contact with the fabric to be printed. A design is created in reverse on the screen by blocking areas of the screen with a material such as an opaque paint. The screen is then placed over the fabric and the printing paste is forced through the open areas of the screen using a flexible synthetic rubber or steel blade known as a squeegee

In hand screen printing the squeegee is drawn steadily across the screen by hand at a constant angle and pressure. However, screen printing is now usually automated, with hand screen printing confined to the high fashion industry. Fully automatic screen printing involves the continuous rotation of a cylindrical screen which is kept in constant with the fabric, ensuring continuous movement of the fabric through the machine. As the screen rotates, printing paste is forced through the design (open) areas of the screen with the aid of stationary squeegee. Printing paste is pumped into the inside of the screen from a container at the side of the machine at an automatically controlled rate.

Rotary Screen Printing
In the mid 1950s a new type of screen printing method involving a cylindrical screen was developed.

Rotary screen printing involves a series of revolving screens, each with revolving screens, each with a stationary squeegee inside which forces the print paste onto the fabric. Twenty or more colours can be printed at the same time. The process is much quicker and more efficient than flat screen printing. Since the 1970s it has grown to dominate the textile printing market.

Colorants
Both dyes and pigments may be used as colorants in the printing process, although the mechanisms by which they are fixed to the textile are quite distinct. The same forces of dye-fibre association apply to both dyeing and printing and, in principle, the dyes used to give a plain-coloured fabric could be used to print that fabric. However, there are three important characteristics a dye must possess in order to be used in the printing process.

The dye must first be able to dissolve in the small amount of water used in the printing paste.

Secondly, the dye must be able to diffuse at a reasonable rate from the printing paste on to the fibre, leading to preference for dye molecules with a low relative molecular mass.

Finally, the unfixed dye must be capable of being washed off satisfactorily without staining the unprinted areas of the fabric.

Pigments are widely used in textile printing, with about 45% of all textile prints produced using pigments. Unlike dyes, they do not directly associate with the textile fibres but are fixed to the textile with a so-called binding agent. The binding agent is usually a copolymer which is incorporated into the printing paste and forms a three-dimensional film when heated.

Fixation and After Treatments
If a textile print is washed soon after printing and drying, most of the colorant will be washed away. An appropriate fixing technique is therefore necessary. Fixing techniques are seldom completely successful and it is usually necessary to follow fixing with removal of the unfixed dye, thickeners and other auxiliary chemicals by a washing process. The efficacy of the fixing and subsequent washing process is extremely important to the quality of the print, and mistakes made at this stage of the printing process can be very costly.

Printed dyes are usually fixed by a steaming process, the steam providing the heat and the vehicle for transfer of the dye from the printing paste to the textile fibre.

Pigment prints are fixed to the fabric simply by baking printed fabric. When the fabric has been printed to an adequate temperature the binder forms a continuous film that incorporates the pigment particles and sticks to the fibre surface. At the same time, if the temperature and pH conditions are suitable, cross-linking between the binder molecules is achieved.

Ink-Jet Printing
During the last 20 years a digital revolution has occurred that has touched everyone's life. We are now surrounded by digital telephones, audio equipment, cameras, camcorders, TV, laser barcode readers, etc., and many homes possess a computer with access to the Internet. Digital technology has greatly affected many industries including the textile printing market, not only by the introduction of full-width jet printing machines but also in every aspect of conventional print production, from the design stage, through coloration and recipe formulation, screen manufacture and print paste preparation to the final control of the printing machine itself.

Ink-jet printers have become very well established in both offices and homes for printing text and graphical data (particularly following the widespread adoption of digital cameras) and indeed the quality of the prints from such machine scan now rival that of laser printers.

Jet printing may be defined as a process by which the desired pattern with its individual colours is built up by projecting tiny drops of 'ink' (special dye liquors) of different colours, in predetermined micro-arrays (pixels), onto the substrate surface. In all true jet printing systems the ink is projected onto the surface as a controlled series of drops. Usually a set of inks is used consisting of at least three or four primary colours, namely cyan (turquoise), magenta, yellow and optionally black, the so-called CMYK inks. As most ink-jet printers were originally designed for paper printing, the terms encountered in, for example, technical specifications are more related to those used in the reprographics industry than to those that a textile printer would normally employ. Thus reference is usually made to inks rather than dye solutions, pigment dispersions or print pastes. Similarly print resolution is usually defined as dots per inch (dpi) or lines per inch.(lpi).

In the field of textiles ink-jet printing is fundamentally different from that of all other techniques, not only because of the non-contact mechanics of the print head but also in the means by which the individual colours of a design are produced. A great deal of computation is necessary to produce each of the millions of pixels in a design and this continues for as long as the machine is printing the fabric. In the past printing machines were adjusted entirely by mechanical methods using the operator's experience and judgement, and although modern impact printing machines may be fitted with more refined feedback devices, these are considerably less sophisticated when compared with the electronic control of jet printers.

Screen Plating---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

---We Pay Attention to Every Details. From the Raw material, Copper Plating, Lathing, Molletting, Matrix-Making, Screen-Plating to End-Control, Package, Transportation, We foucus on Technology wise, and Operation detail, that's how the Top Quality Nickel Screens Come Out.

---Most of the key instruments are imported, Such as Hardness-tester, Molletting Tools, Titration Meter, Special Additive, Tension and Stress Meters, Air-Bag, Pi-Meters etc.

---The aim of Jiangyin Tianyu Nickel Screen Co., Ltd is not only to supply our high-tech-products to the domestic and abroad market, with our acknowledge and our foreign partners we will be the important player on the global market as well.

Raw Material
99.99% Purity JNMC Nickel-Balls to Gurantee the Plating Quality.

Copper Plating
Constant Copper Quality is the basic Key for Screens.
Therefore the Hardness-Tester is a Must

Mandrels
100% Balanced and Mirror-Surface Mandrels

Molletting
All the Tools are Imported from EC and New Tech was Applied.

Matrix-Making
Modest Technique Helps us to Meet the Standards of Our Clientele.

Automatic-Degreasing Matrix-Making Check New Technology

Production
Dust-Free Workshop is the Key to Guarantee the Quality of Fine-mesh and Special screens.

Lab
Electrolyte Automatic Titration Means Precise...and Constant Quality

End-Control
End-Control is our Business Card, We only Deliver Top-Quality Screens

Enviroment Protection
A modest sewage treatment is our input to take care of the environmental thought on our globe.

Sewage Treatment Plant Manufacturing of Demineralized Water

Certificate---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Jiangyin Tianyu Nickel Screen Co.,Ltd Never stop developing and introducing new technologies, High and New technology guarantees the top quality screens, The top quality guarantees our company's fast develop.

For more then 10 years efforts, Jiangyin Tianyu Nickel Screen Co.,Ltd earned a lot of awards, Such as China famous brand, AAA Credit, China High-Tech Enterprise, Technology Innovation Award, also we do hold various production patents from electrolyte solution, matrix-making, high-mesh screen plating etc.

All the honors we earned shows our 15years strive and development, We will continuous do our best to provide all our clients the best products and service.

Hi-Tech Enterprise certificate by Jiangsu Science and Technology Bureau

Star Technology Enterprise by Jiangsu Technology Association

AAA Credit Certificate by Bank of China

Chian Famous Brand Certificate by China Quality Management Center

Enterprise of "Honouring Contracts and Keeping Promise"

ISO 14000 Certificate of Enviroment Management System Certification

ISO 9001-2004 Certificate of Quality Management System Certification

Patent for High Mesh Screen Plating

Technology Innovation Award Certificate by China Textile Industry Association

New Tech Award Certificate by Wuxi Govenment

Jiangyin Tianyu Nickel Screen Co.,Ltd.

ADRESS OF THE DIRECTOR OF BOARD---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Jiangyin Tianyu Nickel Screen Co., Ltd. is the Chinese leading company for manufacturing high quality products for the textile printing- and other related industries. With our annual production capacity we are in the possession to hold 40 % of the domestic market demand.

A consistently production quality, based on a motivated crew, modest technique and well maintained equipment helps us to meet the standards of our clientele. Our after sales service is prepared to support our customers any time.

During the last years Jiangyin Tianyu Nickel Screen Co., Ltd did made various investments to increase the quality of their products. The R+D-Department was reinforced with new equipment. Combined with an intensive relationship to international experts in the electroplating range advanced technologies will open new horizons for our company. A modest sewage treatment is part of our input to take care to the environmental thought of our globe.

The excellent relationship to the Government of the Western Region and the available resources of raw materials did allow us to build up in 2008 a modest production facility in Gansu Jinchang with an investment of 100 million CNY. Thanks to the support of the authorities of Gansu Jinchang and a mutual cooperation with the Nickel manufacturer Yuheng Co., Ltd. we are looking forward to a successful and prosperous future.

The aim of Jiangyin Tianyu Nickel Screen Co., Ltd is not only to supply our high-tech-products to the domestic market, with our acknowledge and our foreign partners we will be the important player on the global market as well.

Jiangyin Tianyu Nickel Screen Co., Ltd.' desire is to serve all our existing and new customers with high-tech-products and build up a long term mutual future. To reach this we are prepared for permanent efforts.

Rotary Screen Printing---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Rotary Screen Printing

*Continuous screen printing process

*Fabric glued to blanket

*Fabric moves under rotating screens

*Rod or blade squeegee system

*Fine adjustments easily made

*Speeds up to 100 yd/min

Rotary Screen Printing Squeegee Principle

Diagrammatic View Of A Roller-Printing System

Roller Printing on Textiles---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Roller printing on textiles

Roller printing, also called cylinder printing or machine printing, on fabrics is a textile printing process patented by Thomas Bell of Scotland in 1783 in an attempt to reduce the cost of the earlier copperplate printing. This method was used in Lancashire fabric mills to produce cotton dress fabrics from the 1790s, most often reproducing small monochrome patterns characterized by striped motifs and tiny dotted patterns called "machine grounds". [1]

Improvements in the technology resulted in more elaborate roller prints in bright, rich colours from the 1820s; Turkey red and chrome yellow were particularly popular.[2]

Roller printing supplanted the older woodblock printing on textiles in industrialized countries[1] until it was resurrected for textiles by William Morris in the mid-19th century.

Engraved copperplate printing

The printing of textiles from engraved copperplates was first practiced by Bell in 1770. It was entirely obsolete, as an industry, in England, by the end of the 19th century.

The presses first used were of the ordinary letterpress type, the engraved plate being fixed in the place of the type. In later improvements the well-known cylinder press was employed; the plate was inked mechanically and cleaned off by passing under a sharp blade of steel; and the cloth, instead of being laid on the plate, was passed round the pressure cylinder. The plate was raised into frictional contact with the cylinder and in passing under it transferred its ink to the cloth.

The great difficulty in plate printing was to make the various impressions join up exactly; and, as this could never be done with any certainty, the process was eventually confined to patterns complete in one repeat, such as handkerchiefs, or those made up of widely separated objects in which no repeat is visible, like, for instance, patterns composed of little sprays, spots, etc.[3]

Bell's patent

Bell's first patent was for a machine to print six colours at once, but, owing probably to its incomplete development, this was not immediately successful, although the principle of the method was shown to be practical by the printing of one colour with perfectly satisfactory results. The difficulty was to keep the six rollers, each carrying a portion of the pattern, in perfect register with each other. This defect was soon overcome by Adam Parkinson of Manchester, and in 1785, the year of its invention, Bell's machine with Parkinson's improvement was successfully employed by Messrs Livesey, Hargreaves, Hall & Co., of Bamber Bridge, Preston, for the printing of calico in from two to six colours at a single operation.

What Parkinson's contribution to the development of the modern roller printing machine really was is not known with certainty, but it was possibly the invention of the delicate adjustment known as the box wheel, whereby the rollers can be turned, whilst the machine is in motion, either in or against the direction of their rotation.[3]
[edit] Roller printing machines

In its simplest form the roller-printing machine consists of a strong cast iron cylinder mounted in adjustable bearings capable of sliding up and down slots in the sides of the rigid iron framework. Beneath this cylinder the engraved copper roller rests in stationary bearings and is supplied with colour from a wooden roller that revolves in a colour-box below it. The copper roller is mounted on a stout steel axle, at one end of which a cogwheel is fixed to gear with the driving wheel of the machine, and at the other end a smaller cogwheel to drive the colour-furnishing roller. The cast iron pressure cylinder is wrapped with several thicknesses of a special material made of wool and cotton lapping the object of which is to provide the elasticity necessary to enable it to properly force the cloth to be printed into the lines of engraving. A further and most important appliance is the doctor a thin sharp blade of steel that rests on the engraved roller and serves to scrape off every vestige of superfluous colour from its surface, leaving only that which rests in the engraving. On the perfect action of this doctor depends the entire success of printing, and as its sharpness and angle of inclination to the copper roller varies with the styles of work in hand it requires an expert to get it up (sharpen it) properly and considerable practical experience to know exactly what qualities it should possess in any given case. In order to prevent it from wearing irregularly it is given a to-and-fro motion so that it is constantly changing its position and is never in contact with one part of the engraving for more than of brass or a similar alloy is frequently added on the opposite side of the roller to that occupied by the steel or cleaning doctor; it is known technically as the lint doctor from its purpose of cleaning off loose filaments or lint, which the roller picks off the cloth during the printing operation. The steel or cleaning doctor is pressed against the roller by means of weighted levers, but the lint doctor is usually just allowed to rest upon it by its own weight as its function is merely to intercept the nap which becomes detached from the cloth and would, if not cleaned from the roller, mix with the colour and give rise to defective work.

Larger machines printing from two to sixteen colours are precisely similar in principle to the above, but differ somewhat in detail and are naturally more complex and difficult to operate. In a twelve-colour machine, for example, twelve copper rollers, each carrying one portion of the design, are arranged round a central pressure cylinder, or bowl, common to all, and each roller is driven by a common driving wheel, called the crown wheel, actuated, in most cases, by its own steam-engine or motor. Another difference is that the adjustment of pressure is transferred from the cylinder to the rollers which works in specially constructed bearings capable of the following movements: (1) Of being screwed up bodily until the rollers are lightly pressed against the central bowl; (2) of being moved to and fro sideways so that the rollers may he laterally adjusted; and (3) of being moved up or down for the purpose of adjusting the rollers in vertical direction. Notwithstanding the great latitude of movement thus provided each roller is furnished with a box-wheel, which serves the double purpose of connecting or gearing it to the driving wheel, and of affording a fine adjustment. Each roller is further furnished with its own colour-box and doctors.

With all these delicate equipments at his command a machine printer is enabled to fit all the various parts of the most complicated patterns with an ease, dispatch and precision, which are remarkable considering the complexity and size of the machine.

In recent years many improvements have been made in printing machines and many additions made to their already wonderful capacities. Chief amongst these are those embodied in the Intermittent and the Duplex machines. In the former any or all of the rollers may be moved out of contact with the cylinder at will, and at certain intervals. Such machines are used in the printing of shawls and sarries for the Indian market. Such goods require a wide border right across their width at varying distances sometimes every three yards, sometimes every nine yards and it is to effect this, with rollers of ordinary dimensions, that intermittent machines are used. The body of the sarrie will be printed, say for six yards with eight rollers; these then drop away from the cloth and others, which have up to then been out of action, immediately fall into contact and print a border or crossbar, say one yard wide, across the piece; they then recede from the cloth and the first eight again return and print another six yards, and so on continually.

The Duplex or Reversible machine derives its name from the fact that it prints both sides of the cloth. It consists really of two ordinary machines so combined that when the cloth passes, fully printed on one side from the first, its plain side is exposed to the rollers of the second, which print an exact duplicate of the first impression upon it in such a way that both printings coincide. A pin pushed through the face of the cloth ought to protrude through the corresponding part of the design printed on the back if the two patterns are in good fit.

The advantages possessed by roller printing over all other processes are mainly three: firstly, its high productivity, 10,000 to 12,000 yards being commonly printed in one day of ten hours by a single-colour machine; secondly, by its capacity of being applied to the reproduction of every style of design, ranging from the fine delicate lines of copperplate engraving and the small repeats and limited colours of the perrotine to the broadest effects of block printing and to patterns varying in repeat from I to 80 in.; and thirdly, the wonderful exactitude with which each portion of an elaborate multicolour pattern can be fitted into its proper place, and the entire absence of faulty joints at its points of repeat or repetition consideration of the utmost importance in fine delicate work, where such a blur would utterly destroy the effect.[3]
[edit] Engraving of copper rollers

The engraving of copper rollers is one of the most important branches of textile printing and on its perfection of execution depends, in great measure, the ultimate success of the designs. Roughly speaking, the operation of engraving is performed by three different methods, viz. (I) By hand with a graver which cuts the metal away; (2) by etching, in which the pattern is dissolved out in nitric acid; and (3) by machine, in which the pattern is simply indented.

(1) Engraving by hand is the oldest and most obvious method of engraving, but is the least used at the present time on account of its slowness. The design is transferred to the roller from an oil colour tracing and then merely cut out with a steel graver, prismatic in section, and sharpened to a beveled point. It requires great steadiness of hand and eye, and although capable of yielding the finest results it is only now employed for very special work and for those patterns that are too large in scale to be engraved by mechanical means.

(2) In the etching process an enlarged image of the design is cast upon a zinc plate by means of an enlarging camera and prisms or reflectors. On this plate it is then painted in colours roughly approximating to those in the original, and the outlines of each colour are carefully engraved in duplicate by hand. The necessity for this is that in subsequent operations the design has to be again reduced to its original size and, if the outlines on the zinc plate were too small at first, they would be impracticable either to etch or print. The reduction of the design and its transfer to a varnished copper roller are both effected at one and the same operation in the pantograph machine. This machine is capable of reducing a pattern on the zinc plate from one-half to one-tenth of its size, and is so arranged that when its pointer or stylus is moved along the engraved lines of the plate a series of diamond points cut a reduced facsimile of them through the varnish with which the roller is covered. These diamond points vary in number according to the number of times the pattern is required to repeat along the length of the roller. Each colour of a design is transferred in this way to a separate roller. The roller is then placed in a shallow trough containing nitric acid, which acts only on those parts of it from which the varnish has been scraped. To ensure evenness the roller is revolved during the whole time of its immersion in the acid. When the etching is sufficiently deep the roller is washed, the varnish dissolved off, any parts not quite perfect being retouched by hand.

In machine engraving the pattern is impressed in the roller by a small cylindrical mill on which the pattern is in relief. It is an indirect process and requires the utmost care at every stage. The pattern or design is first altered in size to repeat evenly round the roller. One repeat of this pattern is then engraved by hand on a small highly polished soft steel roller, usually about 3 in. long and 1/2 in. to 3 in. in diameter; the size varies according to the size of the repeat with which it must be identical. It is then repolished, painted with a chalky mixture to prevent its surface oxidizing and exposed to a red-heat in a box filled with chalk and charcoal; then it is plunged in cold water to harden it and finally tempered to the proper degree of toughness. In this state it forms the die from which the mill is made. To produce the actual mill with the design in relief a softened steel cylinder is screwed tightly against the hardened die and the two are rotated under constantly increasing pressure until the softened cylinder or mill has received an exact replica in relief of the engraved pattern. The mill in turn is then hardened and tempered, when it is ready for use. In size it may be either exactly like the die or its circumferential measurement may be any multiple of that of the latter according to circumstances.

The copper roller must in like manner have a circumference equal to an exact multiple of that of the mill, so that the pattern will join up perfectly without the slightest break in line.

The modus operandi of engraving is as follows. The mill is placed in contact with one end of the copper roller, and being mounted on a lever support as much pressure as required can be put upon it by adding weights. Roller and mill are now revolved together, during which operation the projection parts of the latter are forced into the softer substance of the roller, thus engraving it, in intaglio, with several replicas of what was cut on the original die. When the full circumference of the roller is engraved, the mill is moved sideways along the length of the roller to its next position, and the process is repeated until the whole roller is fully engraved.

Now the whole company is in a state of busy activity---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Now the whole company is in a state of busy activity

Along with the macroeconomic recover, the textile printing industry maintains a good momentum of growth with the balance between production and demand. The sales condition of TIANYU Nickel Screen Co.,Ltd has been turned into swift growth .

With the vigorous push and backing of the policy to rivive textile printing industry, our order quantity increased 35% compared with the same period last year. Now the whole company is in a state of busy activity. Up until the 5th Oct this year, we succeed in solding 800,000 pcs nickel screens which is especially conspicuous.

Currently the company has already come into a new developing stage. Combined efforting and delicate producing is our unchanged target.

Sales Network

1970-01-01 00:33:29

TIANYU Nickel Screen Sales Network

Contact Us

1970-01-01 00:33:29

Company Name:	Jiangyin Tianyu Nickel Screen Co.,Ltd
Address:	No.121 Yongan Road, Changshou, Jiangyin City, Jiangsu Province, China
Zip:	214424
Telephone:	86-510-86360099
Fax:	86-510-86966716
Website:	http://www.tynickelscreen.com
E-mail:	tynickel@yahoo.com.cn upday@hotmail.com
MSN：	upday@hotmail.com
Skype:	barryc1980

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links---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

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Fabric Printing Techniques---Tianyu Rotary Screen Printing Solutions

1970-01-01 00:33:29

TEXTILE PRINTING

APPLICATION OF COLOR TO A FABRIC IN A DESIGN OR PATTERN OBJECTIVES

1. GOOD REGISTRATION

2. GOOD CLARITY

3. GOOD DEFINITION

4. GOOD PENETRATION

5. GOOD FASTNESS

6. LOW PERCENTAGE SECONDS

TYPES OF PRINTING PROCESSES

I. AUTOMATIC FLAT SCREEN PRINTING

A. APPROXIMATELY 17% OF PRINTED GOODS

B. ' ADVANTAGES

(1) LARGE REPEATS

(2) MULTIPLE STROKES FOR PILE FABRICS

C. DISADVANTAGES

(1)SLOW

(2)NO CONTINUOUS PATTERNS

I1 , ROTARY SCREEN PRINTING

A, APPROXIMATELY 70% OF PRINTED GOODS

B. ADVANTAGES

(1) FAST

(2) QUICK CHANGEOVER OF PATTERNS

(3) CONTINUOUS PATTERNS

111. ENGRAVED ROLLER PRINTING .

A. APPROXIMATELY 26% OF PRINTED GOODS

B. ADVANTAGES

(1.) HIGH DESIGN CAPABILITY

A. FINE DETAIL

B. MULTIPLE TONES

C. DISADVANTAGES

(1) COPPER CYLINDERS VERY EXPENSIVE

(2) NOT ECONOMICAL FOR SHORT RUNS

(3) REQUIRES HIGHLY SKILLED WORKERS

IV. HEAT TRANSFER PRINTING

A. APPROXIMATELY 7% OF PRINTED GOODS

B. ADVANTAGES

(1) HIGH QUALITY PRINTS

(2) - FEWER SECONDS

(3) ECONOMICAL FOR SHORT RUNS

(4) PRACTICALLY POLLUTION FREE

C. DISADVANTAGES

(1) SLOW

(2) PRIMARILY ONLY FOR POLYESTER

Textile Printing Properties-Fabric Constructions ---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Fabric Constructions

Fabric construction properties also impact the properties of the final printed fabric as well as the printing process itself. For example, wovens are normally easier to print than knits. The main reason for this statement is because typically woven fabrics are much more dimensionally stable than knits. Fabric distortion or “shift” is a major contributor to out-of-registration prints or misprinting in multicolor textile prints. Because wovens are an interlacing of yarns while knits are interlacing loops of yarn, there is a wide variety of knit fabric structures with varying dimensional stability properties. However, woven fabrics are generally stable.

Also, fabrics with a flat surface print more easily than fabrics with pile surface. A good example of this difference is to compare the typical printing process for sheets with that of bath towels. Sheets are normally printed on flat or rotary screen-printing machines and typically require a single squeegee stroke for the printing process. In contrast, bath towels are usually printed on flat screen-printing machines and may require as many as four squeegee strokes to force the print color down into the fabric pile. The extra squeegee strokes severely limit the printing production
speed for towel fabric. Any fabric with surface texture will present more printing issues than a comparable flat surface fabric. Additionally, thin or sheer fabric constructions may present printing problems compared to thicker fabric constructions of the same fiber content.

The golden rule in the dyeing of textiles is that “a well-prepared fabric is a fabric half-dyed.” This simply indicates the importance good fabric preparation plays in producing high quality final products. For textile printing, especially for cotton fabrics, quality fabric preparation is crucial for quality printing. It has been reported that as many as 60% of textile printing defects can be traced to fabric preparation problems. Often, the company that prints the fabric is not the one that prepares the fabric. When textile goods are prepared for printing, they are normally referred to as PFP goods (prepare for printing). Preparation processes vary widely depending on the fiber content, yarn type, and fabric construction. In the case of cotton, the minimum PFP sequence would include scouring and bleaching. Scouring removes all dirt, oil, and grease from the fabric and is necessary for uniform water absorption and dye penetration. Bleaching destroys all the naturally occurring color in the fabric and is necessary to provide a uniform white fabric
base to allow for optimum print color brightness and reproducibility. It is essential after either one of these processes is completed that adequate rinsing be done to wash away the trash that was removed or chemistry that was used. A clean fabric will ensure that the next wet process can be done without interference from unwanted residual components.

For woven fabrics, the size applied to the warp yarns during weaving can interfere with the penetration and fixation of print color. Therefore, desizing – the removal of warp size – becomes an additional necessary preparation process. For very high-quality printed cotton goods, either knits or wovens, mercerization may be an additional preparation process. Mercerization improves the smoothness, dimensional stability, strength, dye uptake, and luster of cotton
fabrics. Mercerized cotton prints normally exhibit maximum color brightness and improved colorfastness for a given dye. For extremely hairy or fuzzy yarns or fabrics, singeing or the burning off of the surface, may be an additional step required in the preparation process. Regardless of what the preparation sequence for a particular fiber content and fabric construction may be, it is crucial that preparation processing be consistent, uniform, and repeatable. Any
variability in the prepared fabric leads directly to poor print quality or printing defects. The importance of high-quality fabric preparation for printing cannot be overstated.

Textile Printing Properties-Fiber---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Fibers

Dyes are fiber specific; therefore, dyes are chosen for printing based on the fibers, which compose the textile fabric. For example, a 100% cotton fabric can be printed with reactive dyes, vat dyes, or any dye that works for cotton. Alternately, a cotton/polyester blend requires two dye types combined in the print paste. One type is for the cotton fibers, such as reactive, and one type is for the polyester fibers, such as disperse. Textile pigments may also be used. They are not dyes but colorants and require a binder or glue to fix them to the surface of the textile fibers. Unlike dyes, pigments are not fiber specific; therefore, a 60/40 cotton/polyester blend could be printed with a single pigment. Pigments work equally well on 100% cotton fabrics and various blends.

Textile Printing Properties- Yarns---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Yarns

The type of yarn construction also has an influence on textile printing. Because print color is applied from one side of the fabric, the evenness, brightness, and depth of the color is very sensitive to the hairiness, twist, and luster of the yarns. For instance, the higher the yarn luster, the brighter the printed color. Fiber luster can also influence the appearance of the printed design in much the same way. If yarns are highly twisted, they may not allow print paste to
penetrate deeply into the yarn bundle, and this yields poor print colorfastness. Additionally, fine to medium yarns generally are easier to print than large bulky yarns or novelty yarns.

Advantage of TIANYU Nickel Screens

1970-01-01 00:33:29

Manufacturer of Rotary Nickel Screen for Textile Printings,Also provide relative textile materials.

Compared to similar other chinese nickel screens,TIANYU has at least four advantages:

Advantage of 1: The inner side surface is exactly smooth like a mirror, which cause no problem for the blade and Magantic Stick while printing.

Advantages of 2:the circumference of all screens are exactly same after curing which guarantees the printing design.

Advantages of 3:the open area of the whole screen is same,variation within 1%.

Advantages of 4:all screens can be used 5-7 times repeatly.

textile printing---TIANYU Nickel Screen Co.,Ltd

1970-01-01 00:33:29

Printing

PrintingWhen colored patterns and designs
are applied to a finished fabric for its decoration, it is called 'Printing'. In printing, the color is firmly affixed to the fiber so that it may not be affected by washing and friction. Textile printing is related to dyeing in the sense that in both the processes color is applied to the fabric. The difference lies in the fact that in dyeing, the color is applied uniformly to the whole fabric whereas in printing one or more colors are applied to it in selected parts only, and in sharply defined patterns.

The Dyes used for printing mostly include vat, reactive, naphthol and disperse colors which have good fastness properties. Pigments are also used extensively for printing. These colors are fixed to the fiber through resins that are very resistant to laundering or dry cleaning. Improved resins, better pigments or more effective anticrock agents are used to counter the problem of croaking colors on a printed fabric. Some prints are made from basic colors mixed with tartar emetic and tannic acid but they are not very acceptable in todays market.

For cotton printing vat and reactive dyes are generally used. Silk is usually printed with acid colors. Wool is printed with acid or chrome dyes but before printing it is treated with chlorine to make it more receptive to colors. Manmade fibers are generally printed with disperse and cationic dyes.

Methods of Printing
For printing color on a fabric, mostly three techniques are applied: Direct Printing, Discharge Printing and Resist Printing.

Direct Printing
Direct PrintingDirect Printing It is the most common approach to apply a color pattern onto a fabric. If done on colored fabric, it is known as overprinting. The desired pattern is produced by pressing dye on the fabric in a paste form. To prepare the print paste, a thickening agent is added to a limited amount of water and dye is dissolved in it. Earlier starch was preferred as a thickening agent for printing. Nowadays gums or alginates derived from seaweed are preferred as they allow better penetration of color and are easier to wash out. Most pigment printing is done without thickeners because the mixing up of resins, solvents and water produces thickening anyway.

Discharge Printing
Discharge Printing In this technique, the fabric is dyed in piece and then it is printed with a bleaching agent that destroys the color in the designated areas. Sometimes, the base color is removed and other color is printed in its place. The printed fabric is steamed and then thoroughly washed.

Resist Printing
Resist Printing In this technique, a resist paste is fixed onto the fabric and then it is dyed. The dye affects only those parts that are not covered by the resist paste. After dyeing, the resist paste is removed leaving a pattern on the background of the fabric.

There are various methods of printing in which one of the above three techniques is used - Block Printing, Roller Printing, Duplex Printing, Stencil Printing, Screen Printing, Transfer Printing, Jet Spray Printing, Electrostatic Printing, Photo Printing, Batik Dyeing, Tie Dyeing, Airbrush (Spray) Painting and Digital printing

Block Printing Block Printing
Block Printing The designs are carved on a wooden or metal block and the dyestuff in paste form is applied to the design on the face of the block. The block is pressed down firmly by hand on the surface of the fabric.

Roller Printing
Roller Printing In this method which can be called a machine counterpart of block printing, engraved copper cylinders or rollers are used in place of hand carved blocks. When the rollers move, a repeat of the design is printed on the fabric. The printed cloth is passed into a drying chamber and then in a steam chamber where the moisture and heat sets the dye.

Duplex Printing
Duplex Printing Printing is done on both sides of the fabric either through roller printing machine in two operations or a duplex printing machine in a single operation.

Screen PrintingScreen Printing
Screen Printing It is done either with flat or cylindrical screens made of silk threads, nylon, polyester, or metal. The printing paste or dye is poured on the screen and forced through its unblocked areas onto the fabric. Based on the type of the screen used, it is known as 'Flat Screen Printing' or 'Rotary Screen Printing'.

Stencil Printing
Stencil Printing The design is first cut in cardboard, wood or metal. The stencils may have fine delicate designs or large spaces through which color is applied on the fabric. This method is very expensive and thus its use is limited.

Transfer Printing
Transfer Printing In this method, The design on a paper is transferred to a fabric by vaporization. There are two main processes for this- Dry Heat Transfer Printing and Wet Heat Transfer Printing. Various types of cylinders such as electrically heated cylinder, perforated cylinder etc. are used for pressing a fabric against a printed paper which transfers the pattern to the fabric

Airbrush (Spray) Painting
Airbrush (Spray) Painting In this method, the dye is applied with a mechanized airbrush which blows or sprays color on the fabric.

Electrostatic Printing
Electrostatic Printing A dye- resin mixture is spread on a screen bearing the design and the fabric is passed into an electrostatic field under the screen. The dye- resin mixture is pulled by the electrostatic field through the pattern area onto the fabric.

Photo Printing
Photo Printing The fabric is coated with a chemical that is sensitive to light and then any photograph may be printed on it.

Jet Spray PrintingJet Spray Printing
Jet Spray Printing Designs are imparted to fabrics by spraying colors in a controlled manner through nozzles.

Tie Dyeing
Tie Dyeing Firm knots are tied in the cloth before it is immersed in a dye. The outside portion of the immersed fabric is dyed but the color does not penetrates the inside portions of the tied knots. There are various forms of Tie dyeing like Ikat Dyeing where bundles of warp and/ or weft yarns are tie dyed prior to their weaving. In Plangi Dyeing the gathered, folded or rolled fabric is usually held with stitching to form specific patterns.

Batik Dyeing
Batik Dyeing It is a resist dyeing process. Designs are made with wax on a fabric which is then immersed in a dye. The portion not having wax absorbs the color.

Digital printing
Digital printing In this form of printing micro-sized droplets of dye are placed onto the fabric through an inkjet printhead. The print system software interprets the data supplied by a cademic_Textile digital image file. The digital image file has the data to control the droplet output so that the image quality and color control may be achieved. This is the latest development in textile printing and is expanding very fast.

Flocking
FlockingFlocking is the technique of depositing many small fiber particles, called "flock" onto a surface of a fabric to produce design. Instead of dyes, an adhesive is used to affix the flocks on the fabric. Then, roller printing produces design on its surface. Nowadays, this is done by the application of high-voltage electric field too. Flocks of cotton, wool, rayon, nylon and acrylic are all used for the purpose.

textile printing indroduction---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

textile printing indroduction

The desire of adding color and design to textile materials is almost as old as mankind. Early civilizations used color and design to distinguish themselves and to set themselves apart from others. Textile printing is the most important and versatile of the techniques used to add design, color, and specialty to textile fabrics. It can be thought of as the coloring technique that combines art, engineering, and dyeing technology to produce textile product images that had
previously only existed in the imagination of the textile designer. Textile printing can realistically be considered localized dyeing. In ancient times, man sought these designs and images mainly for clothing or apparel, but in today’s marketplace, textile printing is important for upholstery, domestics (sheets, towels, draperies), floor coverings, and numerous other uses.

The exact origin of textile printing is difficult to determine. However, a number of early civilizations developed various techniques for imparting color and design to textile garments. Batik is a modern art form for developing unique dyed patterns on textile fabrics very similar to textile printing. Batik is characterized by unique patterns and color combinations as well as the appearance of fracture lines due to the cracking of the wax during the dyeing process. Batik is derived from the Japanese term, “Ambatik,” which means “dabbing,” “writing,” or “drawing.” In Egypt, records from 23-79 AD describe a hot wax technique similar to batik. The early Egyptians also used ink-carved designs on the ends of wooden cylinders to print on fabrics as early as 400 AD. In Europe, the earliest evidence of textile printing is provided by a wooden block discovered in France dated to the end of the 14th century. The family name “Tuchdruckers” or “textile printers” was well known in Germany by 1440. In the United States, woodcut block printing was practiced in Massachusetts, New Jersey, and Pennsylvania by the 1770’s. A tremendous breakthrough occurred in 1783 when James Bell, a Scotsman, invented engraved roller printing.

The development of screen-printing began in Japan in the middle of the 17th century. Early development involved the use of design stencils held together by fine silk threads or even human hair. The designs were laid onto textile fabrics and color was applied only to the areas outside of the designs. Since the silk threads were so fine, they were not apparent in the final fabric design. The Japanese technique was taken to France where modern flat screen printing was developed, initially using silk fabric stretched over a wooden frame.

Before the modern methods of textile printing are discussed in detail, some specific information on textile material must be covered. The properties of fibers, yarns, and fabric constructions impact the textile printing processes as well as the characteristics of the final printed fabrics.

Textile Printing Properties- WET PRINTING TECHNIQUES ---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

WET PRINTING TECHNIQUES

The modern textile-printing techniques of flat-bed screen, rotary screen, and engraved copper roller are referred to as wet printing techniques. This is because each technique applies a print paste, which is a thickened dye mixture, to the fabric in the printing process. Before covering the specifics of each printing method, the important processes common to all three techniques will be covered.

For wet printing processes, once the fabric has been prepared and delivered to the printing plant, the basic steps in the printing process are as follows:

1. Preparation of the print paste.
2. Printing the fabric.
3. Drying the printed fabric.
4. Fixation of the printed dye or pigment.
5. Afterwashing.

It should be noted that not all printed fabrics are afterwashed. In applications where pigments are printed on finished fabric, afterwashing of the print is not normally performed.

Textile Printing Properties-Preparation of the Print Paste ---TIANYU Rotary Screen Printing Solution

1970-01-01 00:33:29

Preparation of the Print Paste

The specifics of print paste formulation depend on the fiber content of the fabric, the colorant system used, and to some extent, the type of printing machine employed. However, the typical ingredients found in most paste formulations include the following: dyes or pigments, thickeners, sequestering agents, dispersing or suspending agents (surfactants), water-retaining agents (humectants), defoamers, catalysts, and hand modifiers. In addition to the ingredients, pigments require a binder or resin system to fix the pigment and may include adhesion promoters. The most important ingredients of any print paste formulation are the colorants and the thickener system. As mentioned, dyes are fiber specific. The dyes for cellulose fibers – specifically cotton, rayon, and lyocell (Tencel®) – that are used for printing are reactives, vats, naphthols, and directs. Reactives dominate the dyes used for printing these fibers, because of their wide shade range, bright colors, good washfastness, and good availability. Vat dyes are also quite popular for textile printing. They usually have very good overall colorfastness properties, but have a limited shade range and are available in mainly deep colors such as violets, blues, and greens. Naphthols or azoic coupling components are unique in that the dye is actually made through a reaction of two separate chemicals inside the fiber. The typical method uses a stabilized naphthol and coupling component print paste mixture printed onto the fabric then exposed to an acid steaming to develop the color. These are known as the rapid fast or rapidogen colors. The use of naphthols is limited due mostly to application complexity. For all of these dye systems for cotton, thorough afterwashing is essential for good crockfastness and washfastness.

If the printed fabric is a blend, then a combination of different dye types in the print paste will be necessary. For example, a cotton/polyester blend would require reactive dyes for the cotton and disperse dyes for the polyester. These would also require different color fixation conditions.

Therefore, the dominant type of colorant for blended fabrics is pigment systems. Pigments are not dyes, but are colored particles glued to the surface of the fabric. They can color all fibers in the blend the same shade with a single colorant. Once applied, fixation of a pigment color just requires dry heat for a defined amount of time. The colorfastness of pigments directly depends on the binder system employed. Binders are chemicals, which have the ability of forming a three-dimensional film used to hold the pigment particles in place on the surface of a textile substrate. Binders can be water-based (latex) or solvent-based and vary widely in their stiffness.

Adhesion promoters (low crock additives) are chemicals added to increase the adhesion of the binder to the fabric. The major drawbacks of pigment prints include poor crockfastness, especially on deep shades, and stiffening of the fabric so that it may feel somewhat boardy.

Their wide shade range as well as the flexibility and simplicity of processing make pigments an extremely popular choice for both blended and 100% fiber fabrics.

The thickener system is the next crucial component of print paste. The purpose of the thickener system is twofold. First, the thickener gives the print paste the proper viscosity or flow characteristics, so the color can be applied uniformly and evenly. Second, it holds the color in place so that one color paste can be applied adjacent to another without the color bleeding onto
the other. With dyes, the thickener also holds the color in place after drying until the printed fabric goes through the fixation process where the dye is released from the thickener and is diffused into the fiber. Thickeners used with dyes are then washed off the fabric before any chemical or mechanical finishing is performed. However, the thickener applied with a pigment system will remain with the print, as no afterwashing is required. There is a wide range of thickener materials available including alginates, natural vegetable gums, synthetic polymers, or even foams. These materials show sensitivity to factors such as temperature, pH, and salt content.

The following form a group of optional, but often used additives to print paste formulations. Sequestering agents are compounds which complex (bond) with metallic contaminants to prevent interference with the print color or necessary auxiliary chemicals. Calgon is the most well known of this type of additive. Surfactants are additives, which allow chemicals of dissimilar nature to mix. They are used in print paste as dispersing agents, suspending agents, and/or wetting agents. Water-retaining agents or humectants are additives, which prevent premature water evaporation or “skim-over” from print paste. Additionally, they often absorb moisture from the air to keep dried print paste from cracking and shedding off the fabric before fixation.

Defoamers are materials added to the print paste to eliminate unwanted bubble or foam formation during the mechanical action of the printing process. Unwanted foaming leads to uneven or light print color. Defoamer additives must be rechecked to ensure against adverse effects on final print quality. Hand modifiers, most specifically softeners, are often incorporated with pigment print formulations, because print binders tend to overly stiffen the fabric. While these additives may improve certain aspects of the print, they may also interfere with the binder and should be used with caution.

Printing the Fabric--Brief Introduciton---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Printing the Fabric

There are a number of printing techniques used in the industry. These will be discussed in detail, along with several unique processes, in the next section.

Drying the Printed Fabric

After printing the fabric, the paste is dried to prevent accidental smearing of the print design and color migration. At this point, depending on the printing plant layout, the printed fabric may immediately go through the fixation process, or it may be held to go to fixation later. The type of colorant and production issues with the printing operation dictates the choice.

Fixation of the Printed Dye or Pigment

The next step is fixation of the print color. For dyes, fixation normally incorporates an atmospheric steamer with specified moisture content and a nominal temperature of 212°F (100°C). With certain dyes, an auxiliary chemical may be necessary as an extra additive to the print paste. For example, for complete fixation, reactive dyes require additional alkali. In the case of vat dyes, reducing agents are necessary. For pigments on all fibers and disperse dyes for polyester or nylon, only high temperatures are necessary. The fixation equipment used can be a dry heat oven or super-heated steam. The key issue is reaching temperatures of approximately 350°F (177°C) to cure a synthetic pigment binder and as high as 400°F (205°C) for disperse dyes.

Afterwashing

In the case of dye prints, the printed fabric is thoroughly washed then dried after fixation. This step is necessary to remove the thickener, alkali, and other ingredients of the print paste left on the fabric surface after fixation. If not removed, these materials could interfere with subsequent finishing processes. Pigments are often printed on finished fabrics so the afterwashing is not necessary.

Flat-Bed Screen Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

PRINTING THE FABRIC

Flat-Bed Screen Printing

The first of the modern printing methods is flat-bed screen printing. In the textile industry, this process is an automated version of the older hand operated silk screen printing. For garments such as t-shirts, sweatshirts, sweatpants, and caps, the hand-operated process is often used. For each color in the print design, a separate screen must be constructed or engraved. If the design has four colors, then four separate screens must be engraved. The modern flat-bed screen-printing machine consists of an in-feed device, a glue trough, a rotating continuous flat rubber blanket, flat-bed print table harnesses to lift and lower the flat screens, and a double-blade
squeegee trough. The in-feed device allows for precise straight feeding of the textile fabric onto the rubber blanket. As the cloth is fed to the machine, it is lightly glued to the blanket to prevent any shifting of fabric or distortion during the printing process. The blanket carries the fabric under the screens, which are in the raised position. Once under the screens, the fabric stops, the screens are lowered, and an automatic squeegee trough moves across each screen, pushing print paste through the design or open areas of the screens. Remember, there is one screen for each color in the pattern. The screens are raised, the blanket precisely moves the fabric to the next color, and the process is repeated. Once each color has been applied, the fabric is removed from the blanket and then processed through the required fixation process. The rubber blanket is continuously washed, dried, and rotated back to the fabric in-feed area.

The flat-bed screen process is a semi-continuous, start-stop operation. From a productivitydone on flat-bed screen machines.

standpoint, the process is slow with production speeds in the range of 15-25 yards per minute. Additionally, the method has obvious design limits. The design repeat size is limited to the width and length dimensions of the flat screen. Also, no continuous patterns such as linear stripes are possible with this method. However, this method offers a number of advantages. Very wide machines can be constructed to accommodate fabrics such as sheets, blankets, bedspreads, carpets, or upholstery. Also, this technique allows for multiple passes or strokes of the squeegee so that large amounts of print paste can be applied to penetrate pile fabrics such as blankets or towels. Currently, approximately 15-18% of printed fabric production worldwide is done on flat-bed screen machines.

Rotary Screen Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

PRINTING THE FABRIC
Rotary Screen Printing

Due to the semi-continuous process, low productivity, and non-continuous patterns of flat-bed screen printing, inventive machine makers developed rotary screen printing. The idea was first proposed in 1947 in Portugal, but the initial commercial machine was first introduced by Stork (Holland) at the ITMA show in Germany in 1963. In concept, the idea is to take a flat screen and simply shape it into a roll by sealing the ends of the flat screen together. The simple modification converts a semi-continuous process to a continuous one. However, initially there were many technical hurdles to overcome before rotary screen machines became practical.

In basic operation, rotary screen and flat screen-printing machines are very similar. Both use the same type of in-feed device, glue trough, rotating blanket (print table), dryer, and fixation equipment. The process involves initially feeding fabric onto the rubber blanket. As the fabric travels under the rotary screens, the screens turn with the fabric. Print paste is continuously fed to the interior of the screen through a color bar or pipe. As the screen rotates, the squeegee device pushes print paste through the design areas of the screen onto the fabric. As in flat-bed screen printing, only one color can be printed by each screen. After print application, the process is the same as flat screen printing.

By converting the screen-printing process from semi-continuous to continuous, higher production speeds are obtained. Typical speeds are from 50-120 ypm (45-100 mpm) for rotary screen printing depending upon design complexity and fabric construction. Initially, no continuous patterns such as stripes were available with this method due to the seams in the rotary screens. However, with the development of seamless screens, continuous patterns such as linear stripes or plaids became possible. Rotary screen machines are more compact than flat screen

machines for the same number of colors in the pattern. Therefore, they use less plant floor space.

Also with rotary screens, the size of the design repeat is dependent upon the circumference of the screens. This was initially seen as a disadvantage, because the first rotary screens were small in diameter. However, with today’s equipment, screens are available in a range of sizes and are no longer considered design limited. The fact is that today’s rotary screen machines are highly productive, allow for the quick changeover of patterns, have few design limitations, and can be used for both continuous and discontinuous patterns. Estimates indicate that this technique

controls approximately 65% of the printed fabric market worldwide. The principle disadvantage of rotary screen printing is the high fixed cost of the equipment. The machines are generally not profitable for short yardages of widely varying patterns, because of the clean-up and machine down time when changing patterns. Flat screen printing is much more suitable for high pile fabrics, because only one squeegee pass is available with rotary screen. However, rotary machines are used for carpet and other types of pile fabrics.

Screen Engraving---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Screen Engraving

The process of putting designs to be printed on both rotary and flat screens is known as screen engraving. The most widely used process for screen engraving is known as the lacquer method.

The overall process begins with the print design. Once the design is agreed upon, a textile artist separates the design into its individual colors. Each design component of each color is then made into a positive in black opaque ink on clear plastic film; the design is then reproduced color by color.

The flat or rotary screen is evenly coated with a liquid water-soluble photosensitive resin. The screen is dried and stored in the dark. When ready for engraving, the coated screen is then covered in the exact required location with the opaque design positive. High intensity light is then directed onto the screen. Wherever the light hits the screen, it hardens the resin and forms a water insoluble barrier. Where light is prevented from hitting the screen due to the design positive, the resin remains water soluble. After the proper amount of light exposure time, determined by the choice of resin, the screen is washed and dried. The design areas of the screen are opened, and print paste is allowed to flow freely through, but the non-design areas are closed. This method is used for nearly all flat screens.

Laser Engraving

For rotary screens, the most modern method of screen making is known as laser engraving. Here, the original design is digitized on a CAD (computer-aided design) system. Once again, a skilled textile designer separates each color of the design. At the same time, rotary screens are coated with resin, and the resin is completely hardened. The coated screen is then loaded on a mandrel, which is attached to a laser engraver. The machine engraves the screen using the digitized CAD print design data. Again only one color per screen is possible. The laser vaporizes the resin without damaging the screen material, which is normally nickel mesh for modern rotary screens. Laser engraving has greatly expanded the design possibilities for rotary screen printing. There is also a technique for engraving screens using nickel electroplating technology to form the design on the screen. This technology is known as the galvano method, but is now seldom used.

In the case of screen printing, some general print defects should be mentioned. They are as follows:

• Out of registration – pattern out of fit.
• Glue streaks – from the rubber blanket.
• Color smear.
• Color out – from a lack of print paste.
• Creased fabric.
• Pinholes in any screen.
• Damage to the screen leading to misprints.

• Lint on the fabric causes pick-off.

Remember, with print designs, color application must be correct the first time, because printing defects cannot be repaired. There have been many new and exciting improvements in screen printing in recent years, especially in the case of rotary screen machines. The use of microprocessor control systems have allowed for printing that is more accurate, has reduced print defects, and allows for increased productivity. New techniques for recovery and reuse of unused print paste have reduced dye and chemical costs and the pollution load on waste treatment systems. Overall, these improvements have produced machines capable of better quality printing at higher productivity with few defects and reduced environmental impact.

Engraved Roller Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Engraved Roller Printing

Engraved roller printing is a modern continuous printing technique developed in the late 19th and early 20th centuries. Until the development of rotary screen printing, it was the only continuous technique. In this method, a heavy copper cylinder (roller) is engraved with the print design by carving the design into the copper. Copper is soft, so once the design is engraved, the roller is electroplated with chrome for durability. The print design development and color

separation are identical to that used for screen printing. Once each roller (one roller per color) is engraved, it is loaded on the printing machine. This machine has a main cylinder that is fitted with a large gear. This gear fits into and drives each print roller. Each roller is fed print paste by a furnish roller rotating in a color box full of print paste. The main cylinder gear drives all of these parts. As print paste is applied to the print roller, a stationary doctor blade scrapes away all the surface print paste leaving only that which is embedded in the design etchings. Fabric is fed to the machine, backed by a greige fabric to absorb print paste flow through, and backed by a cushioning print blanket. The backing greige is often discarded, but the print blanket is washed, dried, and reused. Printing occurs as the fabric swipes print paste from the print roller as it passes through the pinch point between the roller and the main cylinder. The high fixed cost of copper rollers, expense of engraving process, and possible distortion of fabric during printing have led to its reduced use, now being less than 5% of the worldwide textile printing market.

The fine design detail possible with this technique has always been its main advantage.

Heat Transfer Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Heat Transfer Printing

Heat transfer printing is a technique where paper is printed, followed by the transfer of the design from the paper onto the textile fabric. For cotton, the only widely used commercial process involves printing release paper with pigments. The design on the paper is placed onto the fabric, heated so that the pigment binder softens, releases from the paper, and adheres to the fabric. This release temperature is usually around 400°F (205°C). In general, fabrics printed using this technique must be treated with caution when being ironed or exposed to excessive heat. Also, these fabrics will exhibit all the other characteristics of pigment prints both good and bad. As a point of information, there have been a number of attempts to heat transfer reactive dyes employing a combination of wet/dry processing. None of these attempts has been a widespread commercial success.

---TIANYU Rotary Screen Printing Solutions

Digital Ink-Jet Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Digital Ink-Jet Printing

The newest printing method for textiles is digital ink-jet printing. From a technical standpoint, this process is identical to the ink-jet printer used with nearly every desktop computer. However, for fabrics, these machines are 60-84 inches wide. Digital printing offers tremendous design capabilities. Designs of photographic image quality are possible with this technique. Of course, the method uses a CAD system with digitized image data. It presents the opportunity to change from one design to another immediately without any printed fabric waste. This method has been used in conjunction with body-scan data to produce printed fabrics that are custom fitted for the individual. It has also been used to rapidly produce trial prints for sale or evaluation. Many individuals foresee this method as a technique for the future. There are technological shortcomings associated with this method. The current top printing speeds range from 30-70 yards per hour for flat fabrics compared with a rotary screen machine output of 50-120 yards per minute. The limiting factor on printing speed is the technology of the printing heads. Reports indicate that these production speeds will not increase unless there is a breakthrough in the mechanics of the printing heads. Other printer hardware limitations include cost of the printer heads, ink-jet nozzle clogging, ink recycle, reuse systems, and machine width limitations.

In addition to these hurdles, there are color depth and colorfastness issues with many of the dye systems currently available. Generally, the fabric to be printed must be pretreated with a material such as sodium alginate and alkali, so the printed dye will not bleed and smear before fixation. Ink-jet pigment inks have been developed, but from a commercial viewpoint, ink viscosity, pigment colorant particle size, and print durability are limiting factors.

Regardless of the technical limitations, digital ink-jet printing is a viable commercial alternative technique for small runs (50 yards and under) of highly styled premium fabrics as are used in scarves and ties. Currently, numerous organizations are researching ways to overcome the problems of ink-jet printing of textile fabrics.

---TIANYU Rotary Screen Printing Solutions

SPECIAL TECHNIQUES---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

SPECIAL TECHNIQUES

Resist Printing

In addition to normal printing techniques, there are special techniques available to the printer to produce unique effects on fabric. The first of these is resist printing. In this method, the fabric is first printed in a design with a chemical that resists dye. The fabric is then dyed. The resist will leave the fabric white or some other color in the print areas. One of the advantages of this method is that dyes with very high colorfastness can be used. For cotton, resist printing can be performed with reactive, vat, or naphthol dyes. This method is very similar to the ancient method of batik.

Discharge Printing

A second unique process is known as discharge printing. In this method, the fabric is dyed to the required ground color. Next, the fabric is printed with a chemical that selectively destroys the dye. This leaves a white “discharge” design in the ground color. As an alternative along with the discharging agent, a dye, which is unaffected by the discharge agent, is printed onto the fabric. This yields special color effects of a colored discharge design surrounded by a stable ground color. Using this method, it is possible to surround delicate colors and intricate patterns with deep ground colors. Both discharge and resist printing have higher production costs than normal printing techniques. However, designs not easily achieved with other methods are produced this way. In the case of discharge printing, care must be taken to choose dyes that can
be selectively destroyed without extraordinary means and without damaging the textile fabric. Discharge printing is routinely performed on cotton fabrics.

Flock Printing

A third printing technique is known as flock printing. Here an adhesive is printed in a design on the fabric. Next, the fabric is covered with cut fiber known as flock. The fiber is then embedded in the adhesive by one of various techniques such as compressed air, the shaking process, or the electrostatic process. Once the fiber is embedded in the resin, the resin is cured to firmly fix the fiber. This technique produces a three-dimensional pile surface effect in a specific design on the
fabric.

Summary of Textile Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

SUMMARY

The desire to use textile fabrics as a carrier of designs for decoration or identification has existed for many centuries. The development of modern equipment and colorant technology has enabled textile manufacturers to be able to reproduce highly colored textile designs with excellent colorfastness. This can be performed on a wide variety of fibers and fabric constructions, employing cost effective processes. However, as good as textile-printing technology is today,
the processes are continuing to improve. New technologies and new developments in existing methods promise to continue the expansion of the capabilities of textile printing well into the future.

---TIANYU Rotary Screen Printing Solutions

Preparation of printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

STEPS IN PRINTING PROCESS

1. PREPARATION OF PRINT PASTE

2. PRINTING OF FABRIC

3. DRYING

4. FIXATION OF DYESTUFF

5. WASHING-OFF

Preparation of printing

Type of specific farmulation used depeds on fiber, the colorant system usd and, to some extent, the type of printing machines

Typical ingredients used include:

Dyes or pigment

Thickeners

Binders, cross-linking agents

Sequestrants

Adhension promoters

Defoamers

Catalysts

Hand modifiers

Thickeners

viscosity – the resistance of fluid to flow-(ie.the thickness of the fluid)

-one of the most important variables in a print paste formulation

-can be controlled by choosing from a wide range of possible thickener products, modified by changes in temperature,ph,and electrolyte concentration.

Thickener system-

Natural gums

Synthetic polymers

Emulsions-(oil –in-water,water-in-oil)

Foam

Dymanics of Print pastes

Viscosity-laminar flow(fluids )

Turbulent flow

Important factors for print paste:

Shear stress

Shear rate

Newtonian Fluids-those fulids which possess a constant ficosity over a broad shear rate(stress) range at a given temperature.

Non-newtonian fluids-those fluids which exhibit a changing viscosity with a changing shear rate(stress)

-Pseudoplastic

-plastic

-Thixopropic

Effect of Electrolytes

Effect of concerntration

THICKENING AGENTS

Msut have psedoplastic flow behavior

Low shear=high viscosity

High shear=low viscosity

Pseudoplastic hehavior

Preparation of printing 2---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

THICKENING MEDIA

SOLUTIONS OF POLYSACCHARIDES

- GUM ARABIC

- GUM TRAGACANTH

- LOCUST BEAN GUM

- GUAR GUM

- SODIUM ALGINATE

EMULSIONS

-. 0 I L- In- WATER

- WATER-IN-OIL

OIL IS USUALLY VARSOL

SYNTHETIC (ALL-AQUEOUS)

- POLYACRYLIC ACID

-EMA RESING

ELECTROLYTE SENSITIVE

FOAMS

- AIR DISPERSED IN WATER

Binders

A product of high molecular weight which is capable of forming a three-dimensional film used to hold the pigment particles in place on the surface of textile substrate

--not necessary when using dyes

--very important in determining fastness properties

Normally synthetic(latex) compounds

Acrylics

Vinyl acetates

Butadienes

Self-crosslinking agents

Methylolacrylamide

Methylolmethacrylamide

Sequestering agents

These are compounds which react with metallic ions in such a way that the metal becomes part of a complex

EDTA-most popular to use with dyes

Calgon-often used to soften water

Dispersing agents

Surfactates-used to disperse solid particles,promote paste stability,and increase paste penetration into the fiber.

Similar in use are protective colloids-increasing paste stability.

Surfactants can be

Anionic S- (acidic)

Cationic S+ (basic)

Nonionic S (neutral)

Hurectants

. materialsadded to print paste fmtrdatians to print paste formulations to prevent water evaporation from the paste-preventing”skin-over” and paste instability.

Typical humectants

Ammonia

Triethanolamine

Polyalcohols

Ethylene glycol

Glycerine

Urea

Adhesion promoters

Inrease adhension of binder system to substrate

ie, pigment printing of fiberglass is enhanced by using aminosilane

defoamers

added to print pastes to minimize formation of foam(before foam printing)

often silicone surfactants have been used—however,any compound which decreases bubble formation in the print paste and exhibites no adverse effects can be used

Hand Modifiers

Normally softeners-because binders tend to stiffen the fabric.

Catalysts

A chemical added to a formulation to increase the speed of a chemical reaction.

May be includes in print paste formulation for the binder or for reactive, sulfur, or vat dyes.

May be acidic or basic.

AUXILIARY CHEMICALS

Those necessary for fixation of dye onto fiber

Reactives—alkall

Vats—reducting agent

Acids—acid

Cationic-acid

Disperse-carrier

Do not incorporate strong ACID,BASES,OXIDIZING AND REDUCING AGENTS IN PRINT PASTE.

ACID AGER

Latent reducing agents

(sodium sulfoxylate formaldenyde)

Screen Engraving Process---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

SCREEN ENGRAVING PROCESS

1. PREPARATION OF POSITIVE FILM

A. COLOR SEPARATION .

. B. STEP AND REPEAT

C. REGISTRATION AND ACCURACY

2. TRANSFER TO SCREEN

A. LACQUER METHOD

B. GALVANO METHOD

LACQUER METHOD

PERFORATED SCREEN PREFORMED -

A. HEAT

B. DEGREASE AND CLEAN

C. COAT WITH LIGHT - SENSITIVE EMULSION

D. DRY

E. FILM PLACED IN CONTACT WITH SCREEN

F. EXPOSE TO LIGHT

G. WASH

H. INSPECT

I. CURE

J. INSTALL END RING

Flat-Bed Screen Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

FLAT-BED SCREEN PRINTING

MECHANIZATION OF HAND SCREEN PROCESS

FABRIC GLUED TO BLANKET

SCREENS RISE AND FALL

PRINTING DONE WHILE SCREEN IN DOWN POSITION

ROD OR BLADE SQUEEG.EE SYSTEM

UP TO FO'UR STROKES POSSIBLE

SLOW PROCESS

Rotary Screen Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

ROTARY SCREEN PRINTING

CONTINUOUS SCREEN PRINTING PROCESS

FABRIC GLUED TO BLANKET

FABRIC MOVES UNDER ROTATING SCREENS

ROD OR BLADE SQUEEGEE SYSTEM

FINE ADJUSTMENTS EASILY MADE

SPEEDS UP TO 100 YD./MIN.

FIXATION METHODS

1. ATMOSPHERIC STEAM

- TREATMENT AT 212 DEGREES F WITH SATURATED STEAM

- USED WITH

DIRECT DYES

VAT DYES

NAPHTHOL DYES

ACID DYES -

CATIONIC DYES-

REACTIVE DYES

- FESTOON STEAMER MOST COMMON EQUIPMENT

ACID AGER FOR ACID DYES

2. PRESSURE STEAM

- TREATMENT AT 230 DEGREES F UNDER LON PgESSURE

- USED WITH DISPERSE DYES

- TURBO-AUTOCLAVE MOST COMMON EQUIPMENT

3. HIGH TEMPERATURE STEAM

- TREATMENT WITH SPUERHEATED STEAM AT TEMPERATURE UP TO

420 DEGREES F

- USED WITH

DiSPERSE DYES

P I GMENTS

- CAN ALSO BE USED As AN ATMOSPHERIC STEAMER

4. DRY HEAT

- TREATMENT WITH DRY HEAT AT TEMPERATURES UP TO 420 DEGREES

- USED WITH

DISPERSE DYES

REACTIVE DYES

P I GMENTS

REASONS FOR SCOURING

REMOVE THE THICKENING. AGENT

REMOVE AUXILIARIES

REMOVE EXCESS DYESTUFF

IMPROVE BRILLIANCE OF PRINT

IMPROVE FASTNESS PROPERTI-ES OF PRINT

PROBLEM-

BACK STAINING OF UNDYED AREAS

Pigment Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

PIGMENT PRINTING

70% OF ALL PRINTED FABRICS IN WORLD ARE PRINTED WITH PIGMENTS

COMPOSITION OF PRINT PASTE

PIGMENT

THICKENER (EMULSION OR ALL AQUEOUS)

. BINDER (ACRYLIC POLYMER)

Low CROCK BINDER

SOFTENER

PROCESS

1. PRINT

2. DRY

3. CARE

ADVANTAGES

- ALL FIBERS AND FIBER BLENDS

- No AFTERWASH

DISADVANTAGES

- POOR CROCK FASTENESS

- HARSH HARD

Typical Pigment Print Ebmuhtion

% dry weight

Pigment 10%

Dispersing agent 3%

Soap and/or oleic acid/ammonia 2%

Defoamer 1/10%

Latex(binder) 5-10%

Casein 1%

Bacteriocide 1/10%

Carbopol 1/2%

Solvent 2%

Water 77%

Defects in Screen Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

DEFECTS IN SCREEN PRINTING

OUT OF REGISTRATION

LINT AND thread MARKS

GLUE STREAK

COLOR SMEAR

COLOR OUT

CREASED FABRIC

PINHOLE

DAMAGED SCREEN

Resist printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

Resist printing

Fabric is first printed with a resisting agent, then dyed.

Produces similar effects to discharge printing.

Can use white or colored resists.

Can use dyes of much higher stability than those used in discharge

printing and, therefore, much higher fastness can be obtained.

Discharge Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

DISCHARGE PRINTING

Discharge printing is a method where a "dyed" fabric is printed with

discharging agents Mhich selectively destroy the dye. A white discharge is produced.

An alternative method is to print along with discharging agents,

nondischargeable dye which gives a colored discharge surrounded by a "ground" color.

Advantages

1,Large areas of ground color possible

2,Delicate colors and Intricate patterns possible on deep ground color - excellent depth and clarity possible

3,Higher production costs but long lasting, unique styles

Heat Transfer Printing---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:29

HEAT TRANSFER PR INTI NG

Advantages

1/ Easier handling of units

2/ Easier training of operators

3/ Better registration and clarity

4/ Fewer Seconds (2% vs. 10%)

5/ inventory in paper

6/ Pollution - free

Disadvantages

1. Slow

2 Limited to synthetic fibkrs ,mainly polyester

PRESENT USES OF HEAT TRANSFER PR I NTS

Knitted Apparel

Woven Apparel

Drapery Fabric

Upholstery Fabric

Automobile Interiors

Carpet Tiles

RECENT INNOVATIONS IN HEAT TRANSFER PRINTlNG

Deep Penetrating dyes for pile fabrics

Cationic Dyes for printing acrylics

Processes for Printing Polyester/Cotton Blends

1. Coating Cotton Fiber with Polyester Resin.

2. Resin Fixing Dyes on Cotton.

Wet Heat Transfer Printing

We will attend the exhibition of The 10th China InterDye

1970-01-01 00:33:29

We will attend the The 10th China International Dye Industry,Pigment and Textile Chemical Exhition--(China InterDye),
Sincerely welcome all the friends worldwide to meet us on the Exhibiton.

http://www.chinainterdye.com/EN

Address:
Intex Shanghai, 77 Xingyi Rd., Shanghai
Transportation:
1.15 minutes’ drive from Hongqiao International Airport
2.50 minutes’ drive from Pudong International Airport

Exhibitor:Jiangyin Tianyu Nickel Screen Co.,Ltd
Booth No,: C345

Tianyu Nickel Screen Co.,Ltd + China Dyeing&Printing Industry Association Yearly Assembly

1970-01-01 00:33:29

Jaingyin Tianyu Nickel Screen Co.,Ltd, together with China Dyeing&Printing Industry Association, will held the yealy assembly in December 2009, Welcome All the friends home and abroad to meet us in the Assembly,

Sing-in Date: 19th,Dec,2009
Assembly Date:20th-21th,Dec,2009
Finishe Date:22th,Dec,2009

Assembly Place: Shaoxing FuLiHuang Grand Hotel(5star)
No.1288,Diyang Road,Keqiao,Shaoxing City,Zhejiang Province

Contact: Barry Zhang
Tel: +86-510-86966716
Mp: +86-13906163309
Email:tynickel@yahoo.com.cn

Organizer:
China Dyeing&Printing Industry Association
Jiangyin Tianyu Nickel Screen Co.,Ltd

Media Support:
China Dyeing&Printing Weekly New, China Printing, China Textile, Textile Garment Weekly

Topics:
TIANYU:
1,Brief Introduciton for Tianyu Nickel Screen, and the new hi-tech rotary nickel screens---Chairman of TIANYU
2,Internation Printing New Technology and the latest new Tech for Rotary Nickel Screens---Chairman of Screen Technology,CH
3,The advantage of Tianyu rotary nickel screen and the application---Technology Directoro of TIANYU
4,Communication of Printing Mills

China Dyeing&Printing Industry Association
1,The ECO-Tech Development for Active Dyes.---Professor Song Xinyuan
2,The Energy-Saving & Enviroment-Protect New-Tech Dyes---Senior Pro,Zhang Jie
3,Green & High-Efficiency Printing New Material---Jia Wei
4,Laser Engraving New Technology---Zheng FengKui
5,The Innovation & Development of Coating Printing
6,International Printing New Equipment and Technology Introduction---Lu Pingyang

Textile Printing Dictionary---Tianyu Rotary Screen Printing Solutions

1970-01-01 00:33:29

Bluescale for Printing

Perhaps you know this: Your T-shirt has been printed, marvellous green, yellow, blue tones adorn the substance. You frequently attract it in summer which is hot in which often seems the sun: What happens? The colours bleach. The less they do this, the more colourfast they are. With the help of the blue wool scale this colour fastness of colours is, the UV light you stop, measured. The scale reaches of 0 (very little non-fadely) to 8 (very non-fadely). On the one hand, a wool stripe which is coloured with eight blue tones serves as a comparison, the respective lightfastness shows different and known to the testers values: Of very low till very big. The colour to be tested is then applied on the test material (at best on what she shall be printed later). The half of the coloured test material is not, covered the other half. A xenon lamp then usually feigns sunlight and one tests with a comparison of test material covered and not covered and colour to be tested this one with the help of the blue wool stripe how strongly is from bleached. The method is standardized.

Bleeding

This word has a meaning also in the printer's language, though. It stands for a dirty pressure at which the ink a little runs, for example the letters do not seem marked at the document pressure clearly through this. The transitions become blurred during the pressure at pictures, through what the printed picture seems blurred. There are several possible reasons for the Bleeding: For example an unsatisfactory medium at which you print. The ink then only draws approximately badly into a paper, one the repletion limit is reached too fast. A good printing paper is therefore coated often. Reason for Bleeding also could be itself which can only badly be fixed on the paper the ink.

Blueback

Blueback is the name of a special paper, advertising, this particularly at posters for the outside and inside is used. The back of the paper is blue. Thanks to the blue colouring she covers the motives posters on advertising spaces of with the poster of her own, überklebten different one, particularly good off. The paper is suited for the outside area very well due to his qualities. Firm, wind also stay with wetness and betters attack it only conditionally. Through this a poster absolutely forms three months of the outside area. Blueback is used, however, also at sceneries and photo wallpapers. Blueback paper is usually printed with solvent ink at which the pigments are solved in a medium like embittered Ethanol.

BMP

This abbreviation stands for bitmap, a graphic file format developed for the enterprise Microsoft. So the respective pictures are built up some colour information from many single pixels of which everybody has his own RGB value. RGB answers (for red/green/blue Green/Blue talk/) and is a colour system which builds up primary colours on these three and develops all other colours from this. Picture information can be saved with 1, 4, 8, 16, 24 or 32 bpp in the bitmap format. The abbreviation bpp means here bits per pixel (therefore bits per pixel), how a pixel is a single colour point of the picture and a bit of the smallest unity of the information storage in the computer. If some colour information is saved with more bits, more colours can be represented. Bitmap graphics files consist of a header and the real bitmap data. While the header contains information about graphic size and colour depth approximately, the colours of every single pixel of the graphic are defined in the bitmap data. Graphics saved as a bitmap usually take up much storage and therefore are not suitable for Internet graphics

Composite-File

Almost any picture which you see in your graphics program is a Composite file, a file in which the colour information completely becomes dargstellt. We take once a single microdot and its colour as an example. In the CMYK colour system he becomes in color Cyan with him-(green blue) -- money (Yellow) his magenta (violet red) and his defines shares. K stands for Black. This colour mixture which yields a hue of its own is shown at every microdot in the Composite file now. For the pressure this file gets, however, self-contained in the single primary colours. We get a picture only with the Cyananteilen of the microdots, one for the magenta shares, for Yellow and for black. From the Composite (mix-) -- four single files become file. As a Composite file, more simply can be edited a graphic as if she has been separated. Composite files also conserve the resources of computers; they are smaller than the four self-contained files and must be calculated by the computer less intensively.

Digitalprint

The print view is transferred by a computer directly to a printing press at the digital printing. This is a laser printer conceived for higher editions mostly which represents an electrophotographic system and frequently also takes over postpress tasks like blades or bandages. Modern digital printing systems have a storage medium on which the pressure documents can be safeguarded.

Among other things the digital printing is different from the offset printing by the fact that no firm printing form is needed. This makes possible a printing every single sheet individually and has proved to be extremely economical. The operation is dropped since multi-page publications can be printed directly in the correct order the collect in a machine designed for sorting work extra.

Meanwhile, the digital printing finds many different application fields, e.g. in the direct marketing or the pressure of books with low edition numbers which would not be worthwhile in the offset printing.

Large format printing

The digital printing is a special printing process at which the computer transfers the desired print view directly to a printing press. Because of the high flexibility of the digital printing this printing process is particularly environmentally harmless. By the digital administration of the data and therefore also the respective print view it is possible to update the respective print job also short time before. An unnecessary waste of Druckmaterialen therefore gets very low and is printing not required copies also discontinued, excluded almost. You very frequently use as printing system of the laser printers but ink-jet pressure finds poster at this printing process to use, primarily then, too, if extensive or banners shall be printed. Particularly of advantage the very high quality which always remains unchanged and is therefore very exact at a high pressure edition, too is not cares completely identical at the digital printing process, whether you print colouredly or black whitely. The digital printing Indoor can in this and in the Outdoorbereich is used similarly, of smallest visiting cards about personalized pictures up to extensive fair graphics everything is possible, because the variety of the digital printing does not know any limits. If the digital printing is used for the Aussenwerbung, is to take into account that the ink point marking jet coloured printing inks Aussenbeständigkeit should have which is reached by solvent based coloured printing inks, the ready pressure is particularly kratztfest later and the colour is liable particularly well. The digital printing comes primarily when printing from bridge banners, big areas, making panels, signposts, flags, container advertising, advertizing columns or as a motor vehicle marking for use in the area of the Aussenwerbung. In the Indoorbereich shopwindow decoration, museum equipment, event designs, are however also small documents to be used in the office to print.

DPI

"DPI" is a short cut. Stands for "Dots per inch" and indicates, like many microdots contains an inch of a picture or shall containedly, in which an inch of 2.54 centimetres corresponds. The more microdots it a picture contains, the better can represent colour courses and transitions, for example without these seeming screened (with clearly differentiable areas of colours). Relatively low values see having the observer every single microdot of the picture, extremely low make it impossible to recognize the picture motive. While at pictures a value of 72 dpi usually suffices on the Internet, at least 300 dpi are already required for a really good expression. With the unity "dpi" one can describe the density of the colour points in a picture. However, one also can which maximum density an output device show off with her, (e.g A printer reaches). Details are made approximately to 300 dpi x 300 dpi in the form in which the values stand for length and breadth.

Special Print

The so-called by pressure also is described as a silk-screen print because the manner of printing actually works a little just like sifting. What shall be printed is applied with the help of the photography or also by hand as a stencil on a fabric. The printer colour is sifted by the stencil virtually now. The places of the printing substance (e.g. paper) which shall not be printed are covered. So it is main feature of the by pressure that the coloured printing ink is pressed by the vacancies of a stencil. Mostly, the fabric used at the silk-screen print consists of polyester which has replaced the silk used before. Also nylon or fine steel fabrics are used from time to time. As an advantage of the silk-screen print applying the colour relatively thick and good on the printing substance counts. Silk-screen print is a very flexible printing process: Clothes substances are approximately, besides this for example acrylic glass and ceramic also printed next to paper with him.

EPS

EPS stands for Encapsulated PostScripts. Such as bitmap or JPG EPS belongs to the graphic file formats. A whole number of printeries prefers the EPS format if it is about the question how customers deliver the presentation for a digital pressure. Whole page layouts can be stored, the both vector contained like grid graphics and text with the EPS format. On the one hand, EPS files remain unchanged on all sorts of computer systems (approximately Mac and PC), they can contain all documents used in the document to be printed and on the other hand, are scalable without the graphic losing quality (scalably = reduce or extend, in the same relations to each other how the individual elements of for example a page layout stop). EPS files contain a pre-diagram and make it possible to store it, the overall picture already with self-contained colours (what this means: see Composite file). A disadvantage: Often, EPS files cannot be reworked.

Color Distance

Pressure and original file (e.g. original photo) usually differ in color a little from each other. This difference is expressed by the concept colour distance. Generally can be said: The lower the colour distance between original and pressure, the better were the pressure. It is said delta E 5 for clear colour differences the colour distance with the device of delta E. delta E 1 stands for low. To be meaningful, the colour distance must orientate itself at a predefined colour space. In colour spaces (examples: RGB colour space, HSV colour space) . be certain values which allow a clear regulation of hues assigned to colours. The L*A*B* colour space is usually used. The computing is defined for so-called body colours in the DIN 6174. One describes the one as body colour which arises by the fact that a body (object) only throws back certain wavelengths of the light, absorbs others. If the colour distance is too large between original and pressure, the customer can usually of a professional pressure mode demand free stress.

Pigment Inks

So-called pigment inks are inks with a high colour brilliance. You contain pigments of high purity, water usually distilled to this and additional means. Pigments are different from pigments by the fact that you come loose completely in the solvent, so in the distilled water to have left at the example and ink it. Pigment ink is produced in a pure room therefore in an almost dust-free room. A mixer mixes the individual components to the ink which is then filtered and filled into containers dust-freely. With this ink one can do almost perfect expressions of produce pictures; however, these expressions primarily are good without further processing for use in interiors. There could be problems in the outside area without laminat since the pigment ink is attacked sooner than other inks and is not also waterproof of UV light.

Color Depth

The concept "colour depth" has two a little different meanings, depending on, whether one speaks about a colour or about the colourfulness of a computer graphics generally. If one uses him in connection with colours, then he stands besides similar concepts like colour repletion, colourfulness or grey amount of a colour. The colour depth is, measured the bigger the grey share the lower the colour depth with her grey share here, for example. The concept colour depth also stands for two meanings at computer graphicses: Colours are stored as RGB colours, for example. This means every colour is put together by the three colour channels red, green, blue. By a different mixture of the colours also many other colours then can be represented. In this case colour depth stands for the number of information units, measured in bits which are at every colour channel's for the storage of the hues disposal: Only if the green channel had approximately the colour depth of a bit, then either black or a green tone could be represented. If two bits are available, then 22 possibilities at 8 bits of 28 = 256 possibilities to represent different green tones would arise. The concept colour depth also can stand for the number of bits with which information about every pixel of (colour point) of a picture is saved on the other side. The more bits are available to the information storage per pixel, the more colours can be represented at every pixel" has two a little different meanings, depending on, whether one speaks about a colour or about the colourfulness of a computer graphics generally. If one uses him in connection with colours, then he stands besides similar concepts like colour repletion, colourfulness or grey amount of a colour. The colour depth is, measured the bigger the grey share the lower the colour depth with her grey share here, for example. The concept colour depth also stands for two meanings at computer graphicses: Colours are stored as RGB colours, for example. This means every colour is put together by the three colour channels red, green, blue. By a different mixture of the colours also many other colours then can be represented. In this case colour depth stands for the number of information units, measured in bits which are at every colour channel's for the storage of the hues disposal: Only if the green channel had approximately the colour depth of a bit, then either black or a green tone could be represented. If two bits are available, then 22 possibilities at 8 bits of 28 = 256 possibilities to represent different green tones would arise. The concept colour depth also can stand for the number of bits with which information about every pixel of (colour point) of a picture is saved on the other side. The more bits are available to the information storage per pixel, the more colours can be represented at every pixel

Finishing

One describes all work steps as a "Finishing" which arise after the real pressure for the production of a pressure end product. You can serve to improve a pressure product or to make more robust, for example: The printed can be laminated approximately to this, joined with a lock seam or perforated, punched. Printed paper turns into flyers, Leporellos, posters, books, creative sales letters, protected from wind and weather. Special Finishing work steps can secure special attention for the pressure product: So approximately special hologram foils can be trained. Particularly offers in the "Finishing" offer printeries the possibility of standing out artistically from the competition. Printeries count the delivery of the end products as one of the "Finishing" from time to time, too

Flexprint

The Flexprint is a direct rotation printing process and is mainly applied in the packing pressure. The Flexprint is also used in the multi-coloured newspaper pressure as well as for printing from corrugated cardboards, napkins or wallpapers.

The principle of this printing process is based on a flexible, photopolymer printing plate which is inked by a rotating grid roller. The raised elements of the printing form transfer the colour directly to the printing substance.The printing form which consists of rubber or synthetic material with a laser engraving is produced. This also makes possible reproducing graphics.

Coming in the Flexprint to make colours possible for use, base this one on solvents and water and the print the most different materials uncomplicated which are low viscous and drying fast.Flexprint maschine consist of up to ten publications which are ordered mostly in satellite style. This machine type needs a lower room than the flexprint maschine designed in increase top-hat compact or row style.

Publications produced in the Flexprint can be recognized by the squeezing edges and lack by shades.

Foil Cut

One understands a special printing process by the so-called foil cut at which a certain motive is cut out of a coloured foil with the help of a cutter plotter. Before, this motive is selectly or personally arrangedly and then transferred at the computer to the plotter which prints the desired motive exactly and reliably and provides it with a transfer foil. By means of this self-adhesive transfer foil it is possible after a successful pressure very simply to transfer the motive to the object to be stuck on. Before this can happen, however, the surplus colour foil is removed by hand so that the desired motive is only left later and only this is applied under great heat on the printable area, for example one T-shirt, at long last, too. By the special coating and composition of the used colour foil this is UV and weatherproofly and also for the washing machine suitably as well as heat-resistantly C and resistant against most greases, oils and weak acids up to 90°. Since this method is particularly flexible, small logos or größerflächige pictures let themselves cut all sorts of motives out such as strokes, in which documents can be made with a letter height between 1.5 centimetres and up to 200 centimetres. The foil can then be transferred to textiles, vehicles or boats among other things. The durability is the Hatlbarkeit of these foils depending on the respective foil type and almost lies in the area of the Aussenwerbung between 3 and is in the area of the inside advertising up to 10 years unlimitedly. The foils are by coloured, they can be attached also on glass areas and are then visible well from the two sides through this, that.

MUST WIN BATTLES Tianyu Nickel Screen 2010

1970-01-01 00:33:29

MUST WIN BATTLES Tianyu Nickel Screen Co.Ltd 2010

1,Customization: make sure that our products/service offering to the Market is as close as possible to the basic and latent needs of the individual customer(closer than any competitor gets)

2,Operational Excellence: achieve a breakthrough in the reduction of waste(because of inefficiencied in terms of safety,health,environment,quality and productivity), through a more discilined application of the TIANYU&YUHENG at all levels.

3,Supply chain: set up and manage a streamlinded NICKEL SCREEN export system, leading to problem free quality, service and communication, as perceived by the "global" customer.

4,New Business Development: creat optimum grouth conditions for the "yong lions"(yuheng nickel screen) in a creative and proactive way, and in harmony with the development of the tianyu nickel screen business.

5,Committed and talented teams: provide required resources in time, with suficient skills and commitment to support the above MUST WIN BATTLES and the fast business expansion.

6.The TIANYU Way: develop a unique culture, giving the TIANYU Nickel Screen Co.,Ltd organisation a unique competitive advantage, that cannot be copied by competition, and that serves as a benchmark throughout the Tianyu Organisation.

Textile Rotary Printing Materials---TIANYU Rotary Screen Printing Solutions

1970-01-01 00:33:30

Rotary Screens

End Rings

Endring 640 819 914 1018

Squeegees/ blades

Stainless Steel Squeegee Material

    * Designed Specifically for Rotary Screen Printing
    * Constructed from Premium Grade Swedish Steel
    * Straight Deburred Edges give Consistent Print Quality
    * Excellent Camber (blade flatness)
    * Extremely Durable

# Sizes (100 Meter Roll Lengths- 5kg.)

55 mm x 0.20 mm
50 mm x 0.20 mm
50 mm x 0.15 mm
45 mm x 0.20 mm
45 mm x 0.15 mm
40 mm x 0.15 mm
40 mm x 0.10 mm

* Note: Standard sizes listed, other sizes available upon request.

China Dyeing&Printing Association Assembley was held successfully

1970-01-01 00:33:30

China Dyeing&Printing Association Assembley was held successfully

Together with Jiangyin Tianyu Nickel Screen Co.,Ltd, China Dyeing&Printing Assocciation yearly assembly was held successfully.

More than 600 persons from the most important Chinese Printing Mills attended the assembly, One the meeting, China Dyeing&Printing Assocciation made a brief for 2009 China Dyeing&Printing situation, and introced new technique, and also recommed the rotary nickel screen From Jiangyin Tianyu Nickel Screen Co.,Ltd.

The attended guests also mentioned, Jiangyin Tianyu Nickel Screen Co..Ltd, is the most famous nickel screen producer in China, and also appreciated the high quality rotary nickel screens.

The Nickel Screen from Tianyu Comapay, will reduce the cost of printing mills, and most important, all the screens are same top quality which bring Trouble-Free Printing to the Clients.

China(Shanghai) International Textile Printing Industry Expo

1970-01-01 00:33:30

Jiangyin Tianyu Nickel Screen Co.,Ltd will attend the China International Textile Printing Technology Equipment Expo
Welcome All friends visit our booth.

TPF 2010
China (Shanghai) International Textile Printing Technology Equipment Expo
Incl. Environment-friendly, Energy-saving & Pollutant-reduction New Printing Technology Forum

Date: April 13-15, 2010 Venue: Shanghai Everbright International Convention & Exhibition Center

Sponsored by:
China Textile Engineering Society
Printing Technology Professional Commission of
China Dyeing & Printing Association
China International Trade Promotion Committee,
Shanghai Pudong Branch

Supported by:
Shanghai Dyeing & Printing Association
Dyeing & Printing Association of Zhejiang Province
China Textile News
www.cndye.net

Organized by:
Shanghai Pudong International Expo Co., Ltd.
Shanghai Sun Expoexhibiton Service Co.,LTD
Shanghai Zhong Yin Cultural Communications Co., Ltd.

Boost your enterprise’s development via this Expo

Being the conventional pillar industry of China’s national economy and an industry that both accounts for a good share of the people’s livelihood and represents a remarkable competitive edge among international competition, textile industry has seen its irreplaceable position in respects of booming the market, maximizing exports, creating jobs, increasing farmers’ income and promoting urbanization. According to The Restructuring & Revival Plan of Textile Industry that published by the State Council on April 24, 2009, in order to expedite the revival process of textile industry, we must focus on independent innovation and technological transformation, elimination of the outmoded products and optimization of the industrial layout, boost the restructuring and upgrading of the industry, and transform China’s large-scale textile industry into a powerful one.

Thanks to the efforts in independent innovation and optimization of the industrial structure, we have witnessed not only conspicuous effects of energy conservation and pollutant reduction, but also material changes in manufacturing technology and process of textile industry. On the one hand, garment, home textile and industrial-use cloth have foreseen a greater demand in textile printing products. On the other hand, the pervasive introduction of state-of-the-art know-how, e.g. CAD/CAM technologies, digital jet printing, transfer printing, blue-laser plate-making and automatic stuffing, into China’s conventional printing industry has led to product diversification and coincided with today’s trend of individualism. Textile printing technology equipment and premium-quality auxiliary materials are heralding a tremendous market potential. China (Shanghai) International Textile Printing Technology Equipment Expo echoes the industrial development trend by presenting local and overseas textile printing enterprises with a platform for exhibition and trading purposes. By this means, these enterprises not only are able to expand their market places and further their social networking, but also have an opportunity to discuss the industrial development strategies when the industrial elites are gathering together and competition is going together with collaboration on this occasion.

This Expo made Shanghai, the largest economic capital city of China as well as the international financial and commercial center, as the venue of choice. Along with the process of its becoming the best important economic, financial and information exchange center around the globe, Shanghai is frequently deemed as the first-choice place to hold large-scale exhibitions and the gateway for Chinese enterprises to step onto the international stage. We hereby heartily welcome enterprises at home and abroad to Shanghai to explore more room for development.

Timetable
Registration: April 11-12, 2010
Exhibition hanging: April 11-12, 2010
Exhibition: April 13-15, 2010
Exhibition closing: April 15, 2010 at 14pm

Exhibition Contents

1. Printing equipment:
Digital printing system, automatic printing machine, semi-automatic printing machine, manual printing machine, flocking printing equipment, flat-screen printing machine, rotary-screen printing machine, plate-making equipment, blue-laser plate-making equipment, violet-laser plate-making equipment, drying after printing apparatus, calico printing apparatus, heat / water transfer printing machine, digital pyrography machine, bronzing machine, all-in-one computerized ink jet net-making system, computerized color separation stenciling system, computerized color matching system, stuffing equipment, dyeing and finishing equipment, and printing accessories etc.

2. Printing materials:
Plate-making materials, printing mucilage, printing auxiliaries, plastisol ink, water-based ink, transfer printing ink, flocking materials, printing paint, dyeing and printing auxiliaries, resin, color paste, paste, adhesives, silica gel, hot melt adhesive, bronzing paper, pyrography paper, and transfer paper etc.

3. Consumables & accessories:
Textile dyeing and printing materials and consumables.

Expo visitors
I. More than one overseas agent will be responsible to introduce overseas enterprises or groups of purchasers to take part in this Expo either as exhibitors or as visitors.

II. This Expo is expected to welcome 10,000 visitors by estimate, including professionals from the following areas: textile producers, garment manufacturers, garment material manufacturers, printing processors and purchasers, as well as distributors together with media people and experts or scholars from research institutes or industrial associations. In the meanwhile, some local government leaders and experts will also be invited to attend on-site business negotiations or academic communications with our exhibitors.

Expo Promotions
I. To enhance the awareness and influence power of this Expo via participation in activities organized by the competent industrial departments, e.g. annual meetings, forums and know-how exchanges.

II. To advertise the exhibitor enterprises effectively by means of cooperation with 100 industrial related web portals, newspapers, magazines and TVs.

III. To promote this Expo by virtue of mass distribution of the relevant pamphlets, admission tickets and posters through mail or personal dispatch on the spot of other relevant exhibitions.

Costs

Standard booth (3m×3m)
Domestic: RMB 8,800/booth
Foreign-funded: US$ 2,500/booth

Bare booth with special decoration (≥36 m2)
Domestic: RMB 800/ m2
Foreign-funded: US$ 220/ m2

A standard booth includes one 2.5m-in-height exhibition board, one lintel billboard, carpets, tables and chairs for negotiations, one single phase socket (10A/220V) and two spotlights.
Know-how exchange / product promotion conference: RMB 10,000/hour (including venue rental, drinking water, gathering together visitor and on-site services)

Bulletin & on-site advertisements
Cover: RMB 15,000
Back cover: RMB 10,000
Colored page: RMB 6,000
Arch: RMB 8,000/unit
Air column: RMB 3,000/unit
Badge: RMB 20,000/10,000 pieces

Procedure
Please fill in and send the Application Form impressed with a company seal to the organizing committee. 50% or 100% of the total charge shall be remitted to the bank account as designated by the organizing committee of this Expo within 7 days after you send in your application. Otherwise, your booth will not be reserved. The remaining payment shall be paid up as of February 1, 2010. After each remittance is made, an applicant shall send the relevant money order, either via fax or in photocopy, to the organizing committee for reference. Upon reception of payment, the organizing committee shall release and deliver by post an invoice to whatever address as per the applicant’s request.

Contact Us
Telephone: +86-21-38770003
Fax: +86-21-50131441
http://www.cstpf.com
E-mail: info@sunexpo.org.cn