To produce a dazzling array of beautiful clothes, applying a printing process is a must. The knitwear industry and the printing process are inseparable. Knitwear printing can be divided into several major categories such as screen printing, transfer printing, discharge printing, and glue printing according to different processes. The screen printing, transfer printing and pulling are introduced first. Printing process.
Screen printing
Screen printing is the most widely used knitting garment printing technology. It uses a screen to make plates, publishes and publishes films on the plates (functions to prevent ink from passing through), and graphics (inks are printed on the substrate by scratching by external force) to form a printed image. The entire printing process includes the preliminary computer color separation design - a film out of the film - drying network - printing - drying steps.
Transfer printing
Transfer printing technology is a kind of printing technology popular in recent years. The general principle of thermal transfer printing is to print (print) the pattern on the transfer paper first, and then print the pattern on the T-shirt fabric through high temperature and high pressure. It is based on the sublimation characteristics of some disperse dyes, selects the disperse dyes sublimated at 150-230°C, and mixes them with the paste to make "color inks", and then prints the "color inks" according to the requirements of different design patterns. Transfer paper (this is a special kind of paper, it is called transfer paper), and then transfer the printed pattern printed paper and fabric closely, under the control of a certain temperature, pressure and time, the dye from the printing paper Transfer to the fabric, through the diffusion into the fabric inside, so as to achieve the purpose of coloring.
Thermal transfer printing is mainly for knitted garments made of polyester fabrics, but how to carry out transfer printing and printing processing for knitted garments made of natural fibers such as cotton, wool, and silk, has only recently been tackled and industrialized as a technical problem, that is, cold transfer. Printing technology, which is the first printing method to the appropriate water-soluble dye ink (such as reactive dyes or weak acid dyes), printing on the special paper to print the pattern or text, printed into a transfer printing paper. The alkali-laminated fabric is transferred into the transfer roller at the same time as the transfer paper, and then the same operation as in the thermal transfer printing. That is, the dye ink is transferred on the transfer printing paper to the printed fabric, and then the dye ink is pressed by the pressure. Separation and peeling from the paper, transferring the pattern or text on the transfer printing paper to the fabric. This type of printing method has the advantages of strong pertinence, short process flow, free design, and vivid and fine print patterns.
Discharge printing
Discharging and printing refers to the use of discharge agent printed on colored fabrics, to destroy some of the pigment has been dyed, so as to obtain a variety of patterns, patterns of printing. This method can be divided into white (white) and pattern is colored (pull) 2 kinds. The latter dyeing method makes the fabric pattern fine, but the process is complicated and the cost is high. Discharge printing process is widely used in the printing of knitted T-shirt designs. Figure 4: The part of the dendrite in the discharge printing piece adopts the discharge technique, which can create ordinary fabrics with special pattern effects with varying shades and mottled appearance. It expresses new feelings in the visual and clothing styles, and adds knitted garments. Personalized performance means.
General printing paste is divided into glue and water slurry 2, so the printing is divided into offset and watermark:
Paste printing
Paste printing is also one of the common screen printing. Its appearance and widespread application is after the water paste printing. Because its paste has a gel coverage, it overcomes the limitations of the water paste printing and adapts to various colors. Deep and material printing. After drying, there will be a layer of plastic printed surface, and it is airtight. Therefore, for T-shirts worn in the summer, do not use a large area of ​​glue printing. The large area of ​​the pattern is best to be printed with water slurry, and then embellish some of the mortar, so that it can not only solve the problem of large areas of mortar hard, but also highlight the layering of the pattern.
Water paste printing
Water slurry printing is the most common process in the printing of knitted garments, and it is also one of the most basic printing processes in the screen printing industry. Its working principle is similar to that of dyeing, but the difference is that it "stains" a certain area of ​​the fabric into the color needed for the flower position. This process can be printed on almost all light-colored fabrics. The water paste in the water paste printing is a water-soluble resin paste, which is used to reconcile and dilute the pigment pigments printed on the clothes. It belongs to the auxiliary agent, does not show color itself, is transparent, and is soluble in water. After the printed matter is dried, it is dissolved in the first few washes, and the pigment is combined with the fabric and is insoluble in water. The printed parts of the water paste will become soft after washing, which is exactly the same as that of the unprinted parts.
There are other printing processes applied to knitted garments, such as foam printing, flocking printing, digital printing, bronzing hot silver:
Foam printing
Foam printing, also known as three-dimensional printing, is based on the development of glue printing technology. Its principle is to add several certain proportions of high-expansion chemical substances in the paste printing dye, and the printed bits are dried. With a high temperature of 200-300 °C blistering, to achieve a similar "relief" three-dimensional effect, and elastic, like foam sponge products.
Flocking printing
Strong three-dimensional impression, printing patterns can produce subtle light and shade changes with the light receiving surface, rich visual effects. The working principle is to transfer the high-strength compound resin adhesive brightener to the surface of the substrate with a screen containing a desired flower position, and then let the fiber piles be charged through a high-voltage electrostatic field of several hundred thousand volts. The fluff is evenly and evenly “impacted†to the adhesive, and a layer of fluff is “laid†on the surface of the fabric and then cured at a high temperature. Mostly applied to the knitwear of fashion models.
Digital printing
Digital printing is a product that conforms to the trend of low-carbon environmental protection. It is a printing method that uses a computer-controlled jet printer to directly spray dyes onto fabrics. With high production efficiency and unaffected by pattern style, area and color, it can achieve photo effect. However, due to the high cost, it is mainly used in high-grade knitted fabrics.
Hot stamping silver
The application of this process enables the printing pattern to exhibit a metallic impression of a new printing effect, dazzling and flashing. The principle is to add special chemicals in the printing paste, which is a very ideal printing decoration process.
The innovation of the production process is pulsing continuously with the new type of printing. The new type of printing process also has a variety of applications such as light-sensitive, heat-sensitive paint printing, luminous printing, fragrance printing, photo printing and so on. The choice of dress to meet people's differentiated consumer demand, there is a good development prospects for knitted apparel products. It is because of this technical support for the printing process that makes the clothes more colorful and more personal.
Screen printing
Screen printing is the most widely used knitting garment printing technology. It uses a screen to make plates, publishes and publishes films on the plates (functions to prevent ink from passing through), and graphics (inks are printed on the substrate by scratching by external force) to form a printed image. The entire printing process includes the preliminary computer color separation design - a film out of the film - drying network - printing - drying steps.
Transfer printing
Transfer printing technology is a kind of printing technology popular in recent years. The general principle of thermal transfer printing is to print (print) the pattern on the transfer paper first, and then print the pattern on the T-shirt fabric through high temperature and high pressure. It is based on the sublimation characteristics of some disperse dyes, selects the disperse dyes sublimated at 150-230°C, and mixes them with the paste to make "color inks", and then prints the "color inks" according to the requirements of different design patterns. Transfer paper (this is a special kind of paper, it is called transfer paper), and then transfer the printed pattern printed paper and fabric closely, under the control of a certain temperature, pressure and time, the dye from the printing paper Transfer to the fabric, through the diffusion into the fabric inside, so as to achieve the purpose of coloring.
Thermal transfer printing is mainly for knitted garments made of polyester fabrics, but how to carry out transfer printing and printing processing for knitted garments made of natural fibers such as cotton, wool, and silk, has only recently been tackled and industrialized as a technical problem, that is, cold transfer. Printing technology, which is the first printing method to the appropriate water-soluble dye ink (such as reactive dyes or weak acid dyes), printing on the special paper to print the pattern or text, printed into a transfer printing paper. The alkali-laminated fabric is transferred into the transfer roller at the same time as the transfer paper, and then the same operation as in the thermal transfer printing. That is, the dye ink is transferred on the transfer printing paper to the printed fabric, and then the dye ink is pressed by the pressure. Separation and peeling from the paper, transferring the pattern or text on the transfer printing paper to the fabric. This type of printing method has the advantages of strong pertinence, short process flow, free design, and vivid and fine print patterns.
Discharge printing
Discharging and printing refers to the use of discharge agent printed on colored fabrics, to destroy some of the pigment has been dyed, so as to obtain a variety of patterns, patterns of printing. This method can be divided into white (white) and pattern is colored (pull) 2 kinds. The latter dyeing method makes the fabric pattern fine, but the process is complicated and the cost is high. Discharge printing process is widely used in the printing of knitted T-shirt designs. Figure 4: The part of the dendrite in the discharge printing piece adopts the discharge technique, which can create ordinary fabrics with special pattern effects with varying shades and mottled appearance. It expresses new feelings in the visual and clothing styles, and adds knitted garments. Personalized performance means.
General printing paste is divided into glue and water slurry 2, so the printing is divided into offset and watermark:
Paste printing
Paste printing is also one of the common screen printing. Its appearance and widespread application is after the water paste printing. Because its paste has a gel coverage, it overcomes the limitations of the water paste printing and adapts to various colors. Deep and material printing. After drying, there will be a layer of plastic printed surface, and it is airtight. Therefore, for T-shirts worn in the summer, do not use a large area of ​​glue printing. The large area of ​​the pattern is best to be printed with water slurry, and then embellish some of the mortar, so that it can not only solve the problem of large areas of mortar hard, but also highlight the layering of the pattern.
Water paste printing
Water slurry printing is the most common process in the printing of knitted garments, and it is also one of the most basic printing processes in the screen printing industry. Its working principle is similar to that of dyeing, but the difference is that it "stains" a certain area of ​​the fabric into the color needed for the flower position. This process can be printed on almost all light-colored fabrics. The water paste in the water paste printing is a water-soluble resin paste, which is used to reconcile and dilute the pigment pigments printed on the clothes. It belongs to the auxiliary agent, does not show color itself, is transparent, and is soluble in water. After the printed matter is dried, it is dissolved in the first few washes, and the pigment is combined with the fabric and is insoluble in water. The printed parts of the water paste will become soft after washing, which is exactly the same as that of the unprinted parts.
There are other printing processes applied to knitted garments, such as foam printing, flocking printing, digital printing, bronzing hot silver:
Foam printing
Foam printing, also known as three-dimensional printing, is based on the development of glue printing technology. Its principle is to add several certain proportions of high-expansion chemical substances in the paste printing dye, and the printed bits are dried. With a high temperature of 200-300 °C blistering, to achieve a similar "relief" three-dimensional effect, and elastic, like foam sponge products.
Flocking printing
Strong three-dimensional impression, printing patterns can produce subtle light and shade changes with the light receiving surface, rich visual effects. The working principle is to transfer the high-strength compound resin adhesive brightener to the surface of the substrate with a screen containing a desired flower position, and then let the fiber piles be charged through a high-voltage electrostatic field of several hundred thousand volts. The fluff is evenly and evenly “impacted†to the adhesive, and a layer of fluff is “laid†on the surface of the fabric and then cured at a high temperature. Mostly applied to the knitwear of fashion models.
Digital printing
Digital printing is a product that conforms to the trend of low-carbon environmental protection. It is a printing method that uses a computer-controlled jet printer to directly spray dyes onto fabrics. With high production efficiency and unaffected by pattern style, area and color, it can achieve photo effect. However, due to the high cost, it is mainly used in high-grade knitted fabrics.
Hot stamping silver
The application of this process enables the printing pattern to exhibit a metallic impression of a new printing effect, dazzling and flashing. The principle is to add special chemicals in the printing paste, which is a very ideal printing decoration process.
The innovation of the production process is pulsing continuously with the new type of printing. The new type of printing process also has a variety of applications such as light-sensitive, heat-sensitive paint printing, luminous printing, fragrance printing, photo printing and so on. The choice of dress to meet people's differentiated consumer demand, there is a good development prospects for knitted apparel products. It is because of this technical support for the printing process that makes the clothes more colorful and more personal.
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