Printing Method For Printing Textiles

There are several ways to print textiles, of which there are two commercial printing methods: screen printing and roller printing. The third method is heat transfer printing, the importance is relatively low. Other printing methods used in textile production are: wood template printing, wax Valerian (ie wax) printing, yarn tie dyeing and printing. Many printed textile mills use screen printing and roller printing to print fabrics. Most of the thermal transfer printing carried out by the printing plant is also printed in this way.

First, screen printing

Screen printing includes the preparation of printing screens, which are made of thin silk, which is called screen printing. Although silk screens are no longer used, Printing Textile printing The name of screen printing is often used in the process.) Made of nylon, polyester fibers or wire fabrics with fine mesh on a wooden or metal frame. The screen fabric should be coated with a layer of opaque non-porous film. There are patterns, to remove the opaque film, leaving a thin mesh mesh, this area is to be printed pattern of the site. Most commercial screen fabrics are coated with a layer of photosensitive film, and then through the photographic method to remove the pattern of the film and show the pattern. Place the screen on the fabric to be printed for printing. Printing Textile Put the printing paper into the printing box, through the scraper (a similar windshield wiper on such a tool) to force it from the screen through the net. The same time as the above-

Each color in the print pattern alone requires a screen, the purpose is to print a different color. Example 3 color printing requires 3 mesh frame, the three colors were printed on the fabric up. In addition, the pattern of each color of the pattern must be precisely positioned on the screen to print the pattern after the accurate location, to avoid a green rose like a rose in the red petals in the middle of this phenomenon. Printing Textile Printing on flowers refers to the industrial terms that all patterns are printed on the fabric accurately. The same time as the above-

There are three ways to achieve screen printing, the application of each method is basically the same. The first is hand-screen printing, in the 1920s is very common, is still widely used. Until the mid-1950s, modern technology gave this process automation means, manual screen printing has been the only screen printing method. The second method is called automatic screen printing (also known as flat screen printing and automatic flat screen printing). In the mid-1960s, with further development, the screen shape shifted from a manual and automatic flat screen to a circular mesh shape. The third method is called circular screen printing or rotary screen printing, is currently the most widely used screen printing method. The same time as the above-

Second, the manual screen printing

Manual screen printing in the long board on the commercial production (up to 60 yards plate). The printed cloth rolls smoothly on the table, and the surface of the platen is pre-coated with a small amount of sticky material. And then print the workers along the entire platen to manually move the frame, Printing Textile each time a web box, until the fabric all finished. Each screen corresponds to a printing suit. The production rate of this method is 50-90 yards per hour. Commercial hand-screen printing is also used for printing a large number of cut pieces. In the garment printing process, the garment process and the printing process are arranged together. Before the pieces are sewn together, the custom or unique pattern is printed on the garment. Printing Textile Because the manual screen printing can be used for large flowers back to the pattern of large-scale production of the box, so the printing method can also be printed such as beach bath towels, novel print aprons, curtains and curtains and other fabrics. The same time as the above-

Hand-screen printing is also used to print limited, highly stylish women's clothing and print small quantities for the market Pathfinder products. The same time as the above-

Third, automatic screen printing Automatic screen printing (or flat screen printing) In addition to the process is automated, the other with the same manual screen, so faster. The printed fabric is conveyed through the wide rubber band to the screen, and not (like a hand-screen printing) on a long stage. Printing Textile As with manual screen printing, automatic screen printing is also intermittent rather than continuous process. In this process, the fabric is moved under the screen, and then stopped, the screen scraper for scraping (automatic scraping), after printing, the fabric continues to move to the next screen below the production speed of about 500 yards per hour The Automatic screen screen can only be used for the whole roll fabric, cut a good piece of clothing generally do not use this method of printing. As a commercial production process, due to the use of more efficient production of rotary screen printing, therefore, automatic screen printing (referring to flat screen printing) production is declining. The same time as the above-

Four, rotary screen printing rotary screen printing has several important aspects different from other screen printing methods. Rotary printing is carried out in the same way as the roller prints to be described in the next section. The printed fabric is conveyed through a wide rubber band to the bottom of the rotary teething tube. Screen printing, rotary screen printing production the fastest, more than 3500 yards per hour. Printing Textile Use a seamless porous mesh or plastic mesh. The largest round wire circumference is greater than 40 inches, so the maximum flower back dimension is greater than 40 inches. More than 20 sets of color rotary screen printing machine has also been produced, this printing method is slowly replacing the drum printing. The same time as the above-

Five, roller printing

Roller printing is like a newspaper printing, is a per hour to produce more than 6000 yards printed fabric high-speed process, this method is also called mechanical printing, roller printing, the pattern through the carved copper drum (or roller) printed on the fabric. Copper drum can be carved on the closely arranged very fine fine lines, which can print very detailed, soft pattern. For example, fine, dense Pelicley vortex tweed flower printing is printed by printing a type of pattern. The flower carvings should be exactly the same as the design drawings of the pattern designer, each of which requires a sculpture roll. (In the textile industry-specific printing processing, five-roll printing, six-roll printing, etc. commonly used to express five sets of color or six sets of color roller printing.

Roller printing is the use of the least amount of high-volume printing production methods, the output continued to decline each year. If the production of each pattern is not very large batch, this method is not economical. In most cases, the drum preparation and equipment adjustment of the high cost, long consumption, Printing Textile making the use of this method is not economical to print. However, roller printing is often used for prints with a very fine line pattern, such as the Paisley vortex pattern, and the main prints printed in many seasons. The size of the carved vase depends on the printing machine and the printing pattern. Most of the printing machine can be configured with a maximum circumference of 16 inches of the flower tube, that is the size of the printing pattern can not be more than 16 inches. The width of the flower tube should be slightly larger than the width of the printed fabric so that the fabric, including the cloth edge, can be completely printed on the pattern. Once ready, the printing drum can be used almost unlimited, Printing Textile the general printed millions of yards of the fabric is no problem. The same time as the above-

Six, screen printing and drum printing after the fixed color

Once the fabric is screened by screen or roller, the color is positioned on the cloth, and further processing is required to fix it. The same time as the above-

Dyes used as printing colorants must be able to bind to fibers. The printing fabric can be placed in a temperature close to or sometimes over the boiling point of water (high pressure steaming) can be fixed in the steam; this step is called steaming. After steaming, the fabric is passed through the soap bath to remove the other substances used in the printing paste and the colorant formulation. Finally, the fabric passes through several passes and the drying process. In the printing process need to consume a lot of water and heat. If used in printing, if the pigment is used instead of the dye, the fabric needs to be subjected to a dry heat treatment of up to about 210 ° C to cure the resin of the fixing paint. This step is called baking and no further treatment is required. Using pigments instead of dye printing can save a lot of water and energy. The same time as the above-

The textile industry usually uses dyed fabrics as wet prints, while fabrics printed with pigments are called dry prints. This is because the wet printed cloth needs steam steaming, and subsequent washing as part of the whole process. On the other hand, the printed cloth simply performs dry hot baking as part of the coloring process and does not require water treatment. The same time as the above-

Seven, heat transfer printing

The principle of heat transfer printing is somewhat similar to the shift printing method. Heat transfer printing, first with the dispersion of dyes and printing ink printed on paper patterns, Printing Textile and then the printing paper (also known as transfer paper) stored for printing textile factory use. The same time as the above-

When the fabric is printed, the transfer paper and the unprinted face are affixed to the surface by a heat transfer printing machine and passed through the machine at about 210 ° C (400 T). At such a high temperature, the dye on the transfer paper is sublimated and transferred To the fabric, complete the printing process, do not need further processing. The process is relatively simple and does not require the necessary expertise in roller printing or rotary screen printing (see Figure 9-11). The same time as the above-

Disperse dyes are the only sublimable dyes that are, in a sense, the only dye that can be thermally transferred, so the process can only be used on fabrics made of fibers with affinity for such dyes, including acetate, Nitrile fiber, polyamide fiber (nylon) and polyester fiber. Heat transfer printing, the fabric printing plant from a highly specialized printing paper manufacturers to buy this printing paper. The transfer paper can be printed according to the requirements of the designer and customer (ready-made pattern can also be used for transfer paper printing). The same time as the above-

Heat transfer printing can be used to print clothing (such as edge printing, chest bag embroidery, etc.), in this case to use a specially designed pattern. Heat transfer printing as a complete fabric printing method comes from the printing process, thus eliminating the need for large and expensive dryers, steamers, water washing machines and tenter machines. The same time as the above-

As the printing paper can be tested before printing, thus eliminating the flowers are not allowed and other defects. So heat transfer printing fabrics rarely appear defective. The same time as the above-

Continuous production of thermal transfer printing speed magic is about 250 yards per hour. The same time as the above-

Eight, jet printing and its development prospects

Jet printing is the injection of small droplets of dyes and stays in the exact location of the fabric. The nozzles and patterns used to spray the dye can be controlled by the computer and can obtain complex patterns and precise pattern loops. Jet printing eliminates the latitude and cost increases caused by engraving rollers and making screens, which is a competitive advantage in the rapidly changing textile market. Printing Textile The jet printing system is flexible and fast, and can be quickly transferred from one pattern to another. The printed fabric is not stretched by tension (that is, it will not be distorted by stretching), and the surface of the fabric will not be rolled, thus eliminating potential problems such as fluff or maturing. However, this process can not print fine patterns, blurred pattern outline. The same time as the above-

Now spray printing almost all for carpet printing, textile printing is not an important process of printing. However, by virtue of the research and development of mechanical and electronic control techniques, this situation may change. At present, several jet printing machines have been put into the production of printed textiles, including Millitron spray presses developed by Millilin and its companies.