Refraction embossing originated in the United Kingdom in the early 1990s. Taiwan businessmen used this technology for tin foil paintings, also known as "metal paintings." Later gradually applied to popular gold leaf paintings, gold cards, Buddha cards and other craft gifts. Due to its peculiar effects, detailed dynamics, and anti-counterfeiting, the printing and packaging companies in the mainland have been successfully used in color, wine, and cosmetics. They have quickly led the packaging trend and have been spreading to other industries.
Since 1997, the author has been a teacher of Taiwan's first-generation photogravure developer, and has participated in the development of the dioptric embossing process at the largest foil painting base in China, including Zhejiang Huahong Corporation, Shanghai Zhenyi Arts & Crafts, and Shenzhen Jinzhi Cai Packaging. This process is being applied to the Western countries to develop the "PT" for the use of paper grade refraction and embossing on the festive day. Today, the main process of diamma embossing is being produced and shared with the industry.
The principle of the generation of light patterns There are two kinds of specular reflections and diffuse reflections. Embossing just makes use of this principle. Because the normal scanner scans the items while reading the originals, the originals and the scanning points are perpendicular. The light and dark information obtained by the transmissive reflection records the level and color of the originals. The embossed design is successfully reverse scanned and the lines are passed. Different directions, the thickness of the line, made into the center of the dispersion into: rotating, wave, etc., these lines made by the physical or chemical metal plate, pressed on gold, silver cardboard or other materials, where to go The angle reflects the change of light radiation to produce a layered flare or a two-dimensional stereoscopic image.
The embossed version of the film produced by the embossed film is a shading film that responds to the printing image. In the early years, the computer production required a large amount of work and required a long time. Another film was needed. Both hardware and software were expensive. Failed to promote quickly. The computer is suitable for clear-cut color, picture of the rules of the picture, some landscape paintings have been made hard, rigid, can not make a sense of level and delicate.
In order to circumvent this problem, smart Taiwanese businessmen came up with a simple method to carefully draw a series of various line patterns as a plate, creating a line library, also known as "shading." Like the heart circle, rotating flower bars, straight lines, radiate lines, etc., according to the form of the screen, the layout of the distribution content, with appropriate shading film to copy the pressure domain, without a computer, use the version of technology to make a lot of changes Line pattern. The shading and the picture are meticulously deducted, the film made is clearly structured, the image is fine, and there is no need to produce a piece. This compromise from high technology has greatly promoted the application of embossing technology.
There have also appeared professional pattern printing software companies such as Founder, Mongolia, etc., which can perfectly arrange lines according to image changes. The effect is similar to that of imported products, but it takes time to produce another film. It is better that both are compatible and cooperate with each other. The best effect.
Embossed version of the corrosion of many people believe that with a better texture of the copper plate, a small density, hardness, strong resistance to India, do embossed version of the best. In actual fact, the use of ordinary steel plate, the production of low cost is also particularly effective, the key is the formula of corrosion process, can play a multiplier effect. This is a brief introduction to several methods of corrosion for the industry's reference:
1. Gelatin etching method using gelatin heat dissolved, filtered and then added ammonium dichromate, alkaline steel plate, gelatin coating, explosion exposure, with a liquefied gas furnace fired version into a brown coffee. The back of the plate is protected with alcohol foaming film, which is corroded by ferric chloride in the corrosive cabinet, and finally stripped with caustic soda. The disadvantage is that it takes a long time, the coating uniformity is different, and the fire baking is based on experience.
2. Slurry erosion method This method is commonly used in Wenzhou. The steel plate is peeled off with a sandpaper, and a special sizing machine is used to apply the photosensitive paste. After the light is developed, the electric liver oven is used to bake the pig's liver color. Then, the ferric chloride is sprayed on the pump to erode and finally the film is removed. Disadvantages are that the equipment occupies more space, manual operation is not safe, the surrounding environment is affected, the temperature cannot be maintained, and the success rate is not high.
3. The screen corrosion method uses a screen printing method to apply a layer of photosensitive paste on a steel plate, and after exposure to light, it is directly etched with ferric chloride, generally for three minutes, and finally the film is removed. This process is simple, no baking version, less equipment required, less time-consuming, very high success rate, cost savings, safety and environmental protection.
4. The leveling corrosion method has a kind of imported special colorless glue like a glue, which is directly poured on the steel plate, letting it be leveled, exposed, developed with colorless developing water, and put into a bubble of colored etching solution. Now. The equipment required for the process is simple, safe and environment-friendly, and the effect is good. The photosensitive paste, the developer and the etching solution are all prepared, and the operation is easy. The disadvantage is that the raw material is expensive and the production cost is increased.
Since 1997, the author has been a teacher of Taiwan's first-generation photogravure developer, and has participated in the development of the dioptric embossing process at the largest foil painting base in China, including Zhejiang Huahong Corporation, Shanghai Zhenyi Arts & Crafts, and Shenzhen Jinzhi Cai Packaging. This process is being applied to the Western countries to develop the "PT" for the use of paper grade refraction and embossing on the festive day. Today, the main process of diamma embossing is being produced and shared with the industry.
The principle of the generation of light patterns There are two kinds of specular reflections and diffuse reflections. Embossing just makes use of this principle. Because the normal scanner scans the items while reading the originals, the originals and the scanning points are perpendicular. The light and dark information obtained by the transmissive reflection records the level and color of the originals. The embossed design is successfully reverse scanned and the lines are passed. Different directions, the thickness of the line, made into the center of the dispersion into: rotating, wave, etc., these lines made by the physical or chemical metal plate, pressed on gold, silver cardboard or other materials, where to go The angle reflects the change of light radiation to produce a layered flare or a two-dimensional stereoscopic image.
The embossed version of the film produced by the embossed film is a shading film that responds to the printing image. In the early years, the computer production required a large amount of work and required a long time. Another film was needed. Both hardware and software were expensive. Failed to promote quickly. The computer is suitable for clear-cut color, picture of the rules of the picture, some landscape paintings have been made hard, rigid, can not make a sense of level and delicate.
In order to circumvent this problem, smart Taiwanese businessmen came up with a simple method to carefully draw a series of various line patterns as a plate, creating a line library, also known as "shading." Like the heart circle, rotating flower bars, straight lines, radiate lines, etc., according to the form of the screen, the layout of the distribution content, with appropriate shading film to copy the pressure domain, without a computer, use the version of technology to make a lot of changes Line pattern. The shading and the picture are meticulously deducted, the film made is clearly structured, the image is fine, and there is no need to produce a piece. This compromise from high technology has greatly promoted the application of embossing technology.
There have also appeared professional pattern printing software companies such as Founder, Mongolia, etc., which can perfectly arrange lines according to image changes. The effect is similar to that of imported products, but it takes time to produce another film. It is better that both are compatible and cooperate with each other. The best effect.
Embossed version of the corrosion of many people believe that with a better texture of the copper plate, a small density, hardness, strong resistance to India, do embossed version of the best. In actual fact, the use of ordinary steel plate, the production of low cost is also particularly effective, the key is the formula of corrosion process, can play a multiplier effect. This is a brief introduction to several methods of corrosion for the industry's reference:
1. Gelatin etching method using gelatin heat dissolved, filtered and then added ammonium dichromate, alkaline steel plate, gelatin coating, explosion exposure, with a liquefied gas furnace fired version into a brown coffee. The back of the plate is protected with alcohol foaming film, which is corroded by ferric chloride in the corrosive cabinet, and finally stripped with caustic soda. The disadvantage is that it takes a long time, the coating uniformity is different, and the fire baking is based on experience.
2. Slurry erosion method This method is commonly used in Wenzhou. The steel plate is peeled off with a sandpaper, and a special sizing machine is used to apply the photosensitive paste. After the light is developed, the electric liver oven is used to bake the pig's liver color. Then, the ferric chloride is sprayed on the pump to erode and finally the film is removed. Disadvantages are that the equipment occupies more space, manual operation is not safe, the surrounding environment is affected, the temperature cannot be maintained, and the success rate is not high.
3. The screen corrosion method uses a screen printing method to apply a layer of photosensitive paste on a steel plate, and after exposure to light, it is directly etched with ferric chloride, generally for three minutes, and finally the film is removed. This process is simple, no baking version, less equipment required, less time-consuming, very high success rate, cost savings, safety and environmental protection.
4. The leveling corrosion method has a kind of imported special colorless glue like a glue, which is directly poured on the steel plate, letting it be leveled, exposed, developed with colorless developing water, and put into a bubble of colored etching solution. Now. The equipment required for the process is simple, safe and environment-friendly, and the effect is good. The photosensitive paste, the developer and the etching solution are all prepared, and the operation is easy. The disadvantage is that the raw material is expensive and the production cost is increased.
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