Screen printing belongs to stencil printing, which is called four printing methods together with plain printing, embossing, and gravure printing. Stencil printing includes stencil printing, stencil printing, spray printing, and screen printing. The principle of stencil printing is: the printing plate (the aperture of the printing plate or other printing plate can be used to make ink through the hole). During printing, the ink is transferred to the substrate (paper, ceramics, etc.) through the hole of the stencil through a certain pressure. ), forming an image or text.
The stencil printing is the simplest stencil printing, beginning in the late 19th century. This type of printing is made on a special type of wax paper, and a graphic version of the wax paper is made by a typewriter or a stylus, and an ink roller is used for printing on a wax paper plate. The desired printing effect can be obtained on the substrate. In the stencil printing, the most widely used is the screen printing is the silk fabric, synthetic fabric or metal mesh stretched on the net frame, the use of manual lacquer film or photochemical plate making method for making screen printing plate.
In modern screen printing technology, screen printing plates are produced by photolithography using photosensitive materials (such that the screen holes in the graphic portion of the screen plate are through holes, and the screen holes in the graphic portion are not blocked. Live) oil paintings, prints, posters, business cards, binding covers, commodity packaging, product labels, textile printing and dyeing, glass and metal and other flat carriers.
Direct plate method
Method: The method of direct plate making is to first place the photosensitive film coated with photosensitive material on the worktable surface face up, and put the wrist frame on the film base flat on the film base, then put it in the frame. Into the photosensitive paste and soft coating with a pressure scraper, after drying fully peeled off the plastic film base, attached to the photosensitive film wrist screen can be used for printing, after the development, drying after making silk screen printing plate.
Process flow: stretched - degreasing - drying - peeling film - exposure - development - drying - revision - closure
Indirect plate making
Method: Indirect platemaking method is to indirect film first exposure, with 1.2% H2O2 hardened with warm water, dry after making a peelable graphic film, the platen film with a graphic film surface and a good mesh tight The film was affixed to the wet silk screen by squeezing, the film base was peeled off, and the screen printing screen was made by drying with the wind.
Process flow:
1). Extending - Degreasing - Drying 2). Indirect Film - Exposure - Hardening - Developing 1 and 2 - Laying - Drying - Renovation - Closure 3) Straight-to-Row Blending The first method is to paste the photosensitive adhesive layer with water, alcohol or photosensitive adhesive on the wire mesh frame, and after drying by hot air, the film base of the photosensitive film is peeled off, and then the print is developed and processed into a screen plate.
Screen printing originated in China and has a history of more than 2,000 years. As early as the ancient Chinese Qin and Han Dynasties, there was a folder printing method. In the Eastern Han Dynasty, the method of batik batik was widespread, and the level of printed products also increased. To the great cause of the Sui Dynasty, people began to use the frame with a stretched net to carry out printing, so that the folder printing process developed into a screen printing. According to historical records, the exquisite costumes worn by the court during the Tang Dynasty were printed in this way. By the Song Dynasty, silk screen printing had developed and improved the oil paint originally used. It began to add starch-based rubber powder to the dye to make it a paste for screen printing, making screen printing products more colorful.
Screen printing is a major invention in China. The United States "Serigraphy" magazine has commented on China's screen printing technology: "There is evidence that the Chinese used the stables and stencils two thousand years ago. The clothing of the early Ming Dynasty proved their competitive spirit and processing technology. The invention of screen printing has promoted the development of human material civilization in the world. Today, two thousand years later, screen printing technology has been continuously developed and has become an indispensable part of human life.
Screen printing has many advantages such as large volume, cheap price, colorful, long storage period, and fast delivery. It is recognized by more and more industries and widely used. In the circuit boards of household appliances, textile patterns, T-shirts, cultural shirts, shoes on the pattern, refrigerators, televisions, washing machine panel text, ceramic, glass, wall tiles on the decoration; all kinds of commercial advertising like electrical appliances , packaging, outdoor, fixed, mobile and other advertising platforms; in the packaging and decoration industry, screen printing high-grade packaging boxes, bottles, cigarette packets, wine bags, especially super-large packaging and product shape decoration - abnormal screen printing applications Extensive, closely linked with our lives, its technology is mainly controlled by many printing plants, and small-scale personalized screen printing technology is very few in the country, the market is very broad!
Since the 1980s, China has accelerated the research and development of screen printing materials, equipment, and processes, making screen printing an advantage in competition with flexo printing, offset printing, and gravure printing. Annually at a rate of 7%. About 70% of wide-format color screen printing uses spot color printing, nearly 30% use four-color overprint, and the proportion of four-color overprint is still steadily increasing. Industry survey results show that 70% of the company's annual production value is about 1 million yuan. However, the output value of screen printing in China accounts for less than 2% of the total printing output value. There is still great potential to be tapped and the development prospect is broad.
The survey shows that the annual amount of screen printing ink used in the country is more than 20,000 tons, of which about 54% are imported products; the annual amount of screen is about 10 million square meters, of which about 62% are imported screens, and the annual amount of photosensitive adhesive is about 4300 tons, of which about 57% are imported products. The larger the proportion of imported products used by larger screen printing factories, the greater the proportion.
It is expected that screen printing will continue to maintain a high rate of development in the future, and the technology will gradually increase and the industry scale will further expand. Authoritative sources predict that in the future, the proportion of screen printing in print production will increase to 10%. There is no doubt that China's screen printing industry is nurturing greater development space and potential market. It is estimated that by 2005 China will become the world's largest screen printing market. Screen printing in China will develop in depth and breadth in the future. “Deep†means to develop to a higher level. The international screen printing industry has already widely applied advanced technologies such as computer design, plate making, and electronic engraving, while China is still at the stage of research and trials for these new technologies; “Broad†is the development of new technologies. Screen printing products, such as large outdoor silk screen advertising.
The stencil printing is the simplest stencil printing, beginning in the late 19th century. This type of printing is made on a special type of wax paper, and a graphic version of the wax paper is made by a typewriter or a stylus, and an ink roller is used for printing on a wax paper plate. The desired printing effect can be obtained on the substrate. In the stencil printing, the most widely used is the screen printing is the silk fabric, synthetic fabric or metal mesh stretched on the net frame, the use of manual lacquer film or photochemical plate making method for making screen printing plate.
In modern screen printing technology, screen printing plates are produced by photolithography using photosensitive materials (such that the screen holes in the graphic portion of the screen plate are through holes, and the screen holes in the graphic portion are not blocked. Live) oil paintings, prints, posters, business cards, binding covers, commodity packaging, product labels, textile printing and dyeing, glass and metal and other flat carriers.
Direct plate method
Method: The method of direct plate making is to first place the photosensitive film coated with photosensitive material on the worktable surface face up, and put the wrist frame on the film base flat on the film base, then put it in the frame. Into the photosensitive paste and soft coating with a pressure scraper, after drying fully peeled off the plastic film base, attached to the photosensitive film wrist screen can be used for printing, after the development, drying after making silk screen printing plate.
Process flow: stretched - degreasing - drying - peeling film - exposure - development - drying - revision - closure
Indirect plate making
Method: Indirect platemaking method is to indirect film first exposure, with 1.2% H2O2 hardened with warm water, dry after making a peelable graphic film, the platen film with a graphic film surface and a good mesh tight The film was affixed to the wet silk screen by squeezing, the film base was peeled off, and the screen printing screen was made by drying with the wind.
Process flow:
1). Extending - Degreasing - Drying 2). Indirect Film - Exposure - Hardening - Developing 1 and 2 - Laying - Drying - Renovation - Closure 3) Straight-to-Row Blending The first method is to paste the photosensitive adhesive layer with water, alcohol or photosensitive adhesive on the wire mesh frame, and after drying by hot air, the film base of the photosensitive film is peeled off, and then the print is developed and processed into a screen plate.
Screen printing originated in China and has a history of more than 2,000 years. As early as the ancient Chinese Qin and Han Dynasties, there was a folder printing method. In the Eastern Han Dynasty, the method of batik batik was widespread, and the level of printed products also increased. To the great cause of the Sui Dynasty, people began to use the frame with a stretched net to carry out printing, so that the folder printing process developed into a screen printing. According to historical records, the exquisite costumes worn by the court during the Tang Dynasty were printed in this way. By the Song Dynasty, silk screen printing had developed and improved the oil paint originally used. It began to add starch-based rubber powder to the dye to make it a paste for screen printing, making screen printing products more colorful.
Screen printing is a major invention in China. The United States "Serigraphy" magazine has commented on China's screen printing technology: "There is evidence that the Chinese used the stables and stencils two thousand years ago. The clothing of the early Ming Dynasty proved their competitive spirit and processing technology. The invention of screen printing has promoted the development of human material civilization in the world. Today, two thousand years later, screen printing technology has been continuously developed and has become an indispensable part of human life.
Screen printing has many advantages such as large volume, cheap price, colorful, long storage period, and fast delivery. It is recognized by more and more industries and widely used. In the circuit boards of household appliances, textile patterns, T-shirts, cultural shirts, shoes on the pattern, refrigerators, televisions, washing machine panel text, ceramic, glass, wall tiles on the decoration; all kinds of commercial advertising like electrical appliances , packaging, outdoor, fixed, mobile and other advertising platforms; in the packaging and decoration industry, screen printing high-grade packaging boxes, bottles, cigarette packets, wine bags, especially super-large packaging and product shape decoration - abnormal screen printing applications Extensive, closely linked with our lives, its technology is mainly controlled by many printing plants, and small-scale personalized screen printing technology is very few in the country, the market is very broad!
Since the 1980s, China has accelerated the research and development of screen printing materials, equipment, and processes, making screen printing an advantage in competition with flexo printing, offset printing, and gravure printing. Annually at a rate of 7%. About 70% of wide-format color screen printing uses spot color printing, nearly 30% use four-color overprint, and the proportion of four-color overprint is still steadily increasing. Industry survey results show that 70% of the company's annual production value is about 1 million yuan. However, the output value of screen printing in China accounts for less than 2% of the total printing output value. There is still great potential to be tapped and the development prospect is broad.
The survey shows that the annual amount of screen printing ink used in the country is more than 20,000 tons, of which about 54% are imported products; the annual amount of screen is about 10 million square meters, of which about 62% are imported screens, and the annual amount of photosensitive adhesive is about 4300 tons, of which about 57% are imported products. The larger the proportion of imported products used by larger screen printing factories, the greater the proportion.
It is expected that screen printing will continue to maintain a high rate of development in the future, and the technology will gradually increase and the industry scale will further expand. Authoritative sources predict that in the future, the proportion of screen printing in print production will increase to 10%. There is no doubt that China's screen printing industry is nurturing greater development space and potential market. It is estimated that by 2005 China will become the world's largest screen printing market. Screen printing in China will develop in depth and breadth in the future. “Deep†means to develop to a higher level. The international screen printing industry has already widely applied advanced technologies such as computer design, plate making, and electronic engraving, while China is still at the stage of research and trials for these new technologies; “Broad†is the development of new technologies. Screen printing products, such as large outdoor silk screen advertising.
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