Cold transfer technology
2024-10-15 01:01:11
UV light-cured adhesive can be used to easily transfer digital images printed by inkjet printers to metal surfaces such as crystal, glass, stone, wood, acrylic, ceramic tile, and stainless steel aluminum. There is no pixel loss in the transfer process, that is, what effect the inkjet printer can print, and what effect the UV transfer can achieve. Due to the continuous ink supply system that has emerged in the past two years, printers have reduced the cost of color printing by more than 90%. Therefore, the UV cold transfer printing shows a rapid development trend in the production of personalized or batch products. Printing, metal painting, decoration and decorating advertisements, circuit board printing, arts and crafts, toys, crafts, toys, as well as various product and sheet markings can be imagined.
The following briefly describes several methods of applying cold transfer technology: 1. Crystal image production Crystal image, also known as crystal photo, is currently more popular personalized decorative crafts. The basic process flow is:
1. Choose the desired crystal white embryo. At present, there are domestic manufacturers that specialize in the production and sale of various types of crystal white embryos. These manufacturers are generally concentrated in the Pujiang area of ​​Yiwu, Zhejiang. Prices range from a few yuan to tens of dollars.
2. Select the film that can be transferred. This kind of film is generally composed of PET (polyester) film coated with a thin layer of water-absorbing film, which is a double-layered structure, and the printed pattern can only be printed on the surface of the water-absorbing film. A good film of clear, shiny, smooth coating does not deposit ink and is easily peeled off. The current film specifications are generally A4.
3. Choose a UV shadowless adhesive for transfer printing, ie UV light curing adhesive. Good quality shadowless glue has low solubility in water-based inks on the pattern but at the same time can maintain its equivalent adhesive strength. On the other hand, it must also have a considerable bond strength to crystal (or glass), otherwise it will be in the later process. During the grinding and polishing process or after the product has been produced for a period of time, there is a phenomenon such as spotted cracked snow in the water.
4. Choosing an Appropriate Inkjet Printer and Printing Ink In order to save printing costs, Epson (such as the 830U) printer is the most commonly used printer at present, because the market has the largest number of continuous ink supply systems compatible with Epson printers. The current market price of the 830U continuous ink supply system is about RMB 200/set. The general aqueous ink is also suitable for UV cold transfer, but the printing cost is high.
5. Selection of light source and light curing method Regular UV light, ordinary mercury lamp (mercury lamp) and sunlight can meet the requirements of the crystal photo bonding, but if you want to pay attention to efficiency, the faster the UV light source curing speed, (The higher the surface temperature of the adherend, the faster the curing rate.) The closer the illumination distance, the faster the curing speed. However, at the same time, it should be noted that when the curing speed is too fast, cracks and spots may occur on the adhesive layer. Therefore, prior to batch use, relevant tests should be conducted based on the local natural environment and conditions and the proficiency of construction personnel in order to determine the best operating procedures.
6. Detailed explanation of the transfer operation
1) For large-size crystal photographs, glue is generally applied in the shape of "m" on a crystal (or glass) sheet to be printed, and the film on which the image is printed is laid, and the film is printed with a mimeograph or a rubber scraper. The board will drive off the glue around, wait for the glue to cover the image and the bubble will be expelled and place it under a 250-400W mercury lamp for 1-2 minutes. After removal, remove the transparent film (PET film). Put it aside for use and the transfer is complete. This process can be done under outdoor natural light.
2) Apply another sizing to the crystal (glass) that has already been transferred with the image pattern, cover another piece of crystal (glass) on the glue solution, remove the bubbles, and place it under the mercury lamp again. . Remove and place it for dozens of minutes and then machine it.
3) If only one piece of crystal white embryo is used to make the crystal image, replace the above process 2) "put another piece of crystal (glass) on the glue solution" instead of using the PET film removed from process 1) to cover the glue solution. With a rubber scraper, scrape off the PET film after the film is evenly exposed and exposed. However, the UV shadowless adhesive applied in this process should have no shadow glue with high hardness, water resistance, solvent resistance, and good scratch resistance after curing, and can not use the shadowless glue of step 1).
The general operating procedure is: sizing the crystal (glass) white embryo--put the film that has been printed out by the ink jet printer on the glue--use a rubber scraper to disperse the glue under the film. Make it evenly filled with images and graphics while exhausting air bubbles - place it under a 250-watt ordinary mercury lamp and light-curing it for 1-2 minutes. - Remove the extra-embryonic film with scissors on the edge of the crystal blank. Remove the PET film from the freshly cut place by hand with care --- use a razor to repair the flash edge --- squeegee the crystal pattern ----cover the other glass (crystal) --- light 1 - 4 minutes --- cooling for tens of minutes --- polishing 2. transfer of digital images on mirrors, tiles, wood, stainless steel, aluminum sheets, acrylics, etc. except for acrylics. , The other operations are the same as the above-mentioned crystal digital image transfer.
1. This product is a non-solvent environment-friendly single-component transparent shadowless adhesive, which can be quickly cured and formed under the irradiation of ultraviolet light source.
2. This product has good water and solvent resistance.
3. This product has good abrasion resistance, high hardness and good scratch resistance.
4. This product is very low on the light source, can be cured under ordinary outdoor natural light
The following briefly describes several methods of applying cold transfer technology: 1. Crystal image production Crystal image, also known as crystal photo, is currently more popular personalized decorative crafts. The basic process flow is:
1. Choose the desired crystal white embryo. At present, there are domestic manufacturers that specialize in the production and sale of various types of crystal white embryos. These manufacturers are generally concentrated in the Pujiang area of ​​Yiwu, Zhejiang. Prices range from a few yuan to tens of dollars.
2. Select the film that can be transferred. This kind of film is generally composed of PET (polyester) film coated with a thin layer of water-absorbing film, which is a double-layered structure, and the printed pattern can only be printed on the surface of the water-absorbing film. A good film of clear, shiny, smooth coating does not deposit ink and is easily peeled off. The current film specifications are generally A4.
3. Choose a UV shadowless adhesive for transfer printing, ie UV light curing adhesive. Good quality shadowless glue has low solubility in water-based inks on the pattern but at the same time can maintain its equivalent adhesive strength. On the other hand, it must also have a considerable bond strength to crystal (or glass), otherwise it will be in the later process. During the grinding and polishing process or after the product has been produced for a period of time, there is a phenomenon such as spotted cracked snow in the water.
4. Choosing an Appropriate Inkjet Printer and Printing Ink In order to save printing costs, Epson (such as the 830U) printer is the most commonly used printer at present, because the market has the largest number of continuous ink supply systems compatible with Epson printers. The current market price of the 830U continuous ink supply system is about RMB 200/set. The general aqueous ink is also suitable for UV cold transfer, but the printing cost is high.
5. Selection of light source and light curing method Regular UV light, ordinary mercury lamp (mercury lamp) and sunlight can meet the requirements of the crystal photo bonding, but if you want to pay attention to efficiency, the faster the UV light source curing speed, (The higher the surface temperature of the adherend, the faster the curing rate.) The closer the illumination distance, the faster the curing speed. However, at the same time, it should be noted that when the curing speed is too fast, cracks and spots may occur on the adhesive layer. Therefore, prior to batch use, relevant tests should be conducted based on the local natural environment and conditions and the proficiency of construction personnel in order to determine the best operating procedures.
6. Detailed explanation of the transfer operation
1) For large-size crystal photographs, glue is generally applied in the shape of "m" on a crystal (or glass) sheet to be printed, and the film on which the image is printed is laid, and the film is printed with a mimeograph or a rubber scraper. The board will drive off the glue around, wait for the glue to cover the image and the bubble will be expelled and place it under a 250-400W mercury lamp for 1-2 minutes. After removal, remove the transparent film (PET film). Put it aside for use and the transfer is complete. This process can be done under outdoor natural light.
2) Apply another sizing to the crystal (glass) that has already been transferred with the image pattern, cover another piece of crystal (glass) on the glue solution, remove the bubbles, and place it under the mercury lamp again. . Remove and place it for dozens of minutes and then machine it.
3) If only one piece of crystal white embryo is used to make the crystal image, replace the above process 2) "put another piece of crystal (glass) on the glue solution" instead of using the PET film removed from process 1) to cover the glue solution. With a rubber scraper, scrape off the PET film after the film is evenly exposed and exposed. However, the UV shadowless adhesive applied in this process should have no shadow glue with high hardness, water resistance, solvent resistance, and good scratch resistance after curing, and can not use the shadowless glue of step 1).
The general operating procedure is: sizing the crystal (glass) white embryo--put the film that has been printed out by the ink jet printer on the glue--use a rubber scraper to disperse the glue under the film. Make it evenly filled with images and graphics while exhausting air bubbles - place it under a 250-watt ordinary mercury lamp and light-curing it for 1-2 minutes. - Remove the extra-embryonic film with scissors on the edge of the crystal blank. Remove the PET film from the freshly cut place by hand with care --- use a razor to repair the flash edge --- squeegee the crystal pattern ----cover the other glass (crystal) --- light 1 - 4 minutes --- cooling for tens of minutes --- polishing 2. transfer of digital images on mirrors, tiles, wood, stainless steel, aluminum sheets, acrylics, etc. except for acrylics. , The other operations are the same as the above-mentioned crystal digital image transfer.
1. This product is a non-solvent environment-friendly single-component transparent shadowless adhesive, which can be quickly cured and formed under the irradiation of ultraviolet light source.
2. This product has good water and solvent resistance.
3. This product has good abrasion resistance, high hardness and good scratch resistance.
4. This product is very low on the light source, can be cured under ordinary outdoor natural light
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