Future research direction According to the existing packaging printing ink in China is a solvent-free UV fast-drying ink, thermosetting ink, catalytic fast drying ink, electron beam hardening ink and water-soluble ink, etc., improve the speed, expand the application, adapt to the packaging and printing technology Will be one of the focuses of the study.
Secondly, the use of matt, glossy, gold-silver, and color inks will increase the quality of prints and intensify the research and response to the easy removal of inks during recycling.
The third is how to improve the adhesion and easy removal of printing inks for plastics, metals, fibers and building materials.
There is also how to increase the purity of the pigment and the degree of gray balance of the ink system while the degree of pigmentation is increased.
In addition, discolored liquid crystal anti-counterfeiting, edible, copying, magnetic, electrical conductivity, corrosion resistance, electrostatic ink, and computer-manufactured direct plate-making inks are bound to become comprehensive in 2005 as the government, the association’s key support, and the economic support of enterprises. Advance. As the industry leader, the priorities of the China Packaging Science and Technology Research Institute, the China Institute of Printing Science and Technology, etc. are:
1. Water-based inks will be printed with flexible resin plates and gravure plates. Secondly, the key to influencing the printing quality during application is pH control.
2. Ultraviolet inks have a different degree of absorption of photons (wavelengths) due to the different colors of the color ink system. For example, the magenta transmittance is about 55%, the yellow transmittance is about 25%, and the cyan transmittance is about 14%. The black transmittance is about 12%. This doctrine is the consensus of the packaging and printing industry. Hereby, the author suggests in the color printing sequence of packaging and printing: white - black - cyan - yellow - magenta is better. Secondly, the use of photoinitiators and photosensitizers is too small, which will often result in low printing quality (caused by slow drying and adhesion). Adding 0.01% to 0.5% of the appropriate amount can increase the printing speed and shorten the photocuring time, and achieve a good quality. The request.
3. Inkjet is mostly a special charged ink, which is generally water-soluble and solvent-soluble. Although the ink is a very promising packaging and printing, outdoor advertising technology, it is too costly and difficult to popularize, so future research goals should be Put on cheap materials to explore.
4. Although functional solid packaging printing inks have been available for a short time, most packaging and printing companies are willing to try them. For example, in Shijiazhuang City, Hebei Province, the wax paper factory has been printing in the scattered parts of the process, the remaining color ink ink tank is often inconsistent with the design of large-scale printing graphics stored in the warehouse, accounting for almost 20% of ink consumption Until the scrap point of view, it only caused the plant's favor. Since the product needs to be screened at minus 20-30 degrees Celsius, it limits the production of small plants. In this regard, the main topics to be studied in the future are: (1) solubility of a single solvent; (2) non-toxicity of a mixed solvent; (3) sealing and freshness of a packaging bag; (4) heat resistance of a solid ink; (5) Universality of materials; (6) Specification of technical indicators.
5. Pure natural green packaging printing ink has been promoted for 3 years, and because it is a thermoplastic resin, it has been difficult to replace the commercially available composite ink because of its heat resistance and alkali resistance. After the authors performed the laminating test of different materials with the operators of rotary gravure printing and flexographic printing, the apparently elongated deformation or migration of graphics and images has plagued the application of the product. So far, the main direction for the future is to increase the softening (120±5°C) point of the binder in the ink system through the compounding technology.
If the defects in the product are remedied, the advantages of low ink cost and high safety factor will be furthered.
6. The testing and testing equipment, the replacement of the automatic color matching system, and the existing 29 scientific indicators for scientific testing are all based on the selection of tests, tests, and appraisals of rapid drying inks such as ultraviolet, microwave, infrared, pulsed radiation, and electron beam. If a computer is used for formula design, the stored recipes include formula number, ingredient classification, variety name, percentage content, performance use (eg color, strength, brightness, gloss, drying time and method, range of use and application method, and Related industry information, etc.) The user can freely select the formula according to its use and quantity, and can store the physical and chemical properties of various raw materials (such as appearance, color, melting point, molecular weight, toxicity, volatilization gradient of boiling point solvent, etc.). At the same time in accordance with ZBAl705-87 (print ink product classification, naming and model) professional standards for the identification of national indicators, corporate indicators, user indicators and ISO certification number and documentation sources and so on.
7. Learn lessons and rationalize the market. Stop the disorderly competition, strengthen the market forecasting intelligence analysis, and make the packaging printing inks go to the orderly benign production marketing track.
Secondly, the use of matt, glossy, gold-silver, and color inks will increase the quality of prints and intensify the research and response to the easy removal of inks during recycling.
The third is how to improve the adhesion and easy removal of printing inks for plastics, metals, fibers and building materials.
There is also how to increase the purity of the pigment and the degree of gray balance of the ink system while the degree of pigmentation is increased.
In addition, discolored liquid crystal anti-counterfeiting, edible, copying, magnetic, electrical conductivity, corrosion resistance, electrostatic ink, and computer-manufactured direct plate-making inks are bound to become comprehensive in 2005 as the government, the association’s key support, and the economic support of enterprises. Advance. As the industry leader, the priorities of the China Packaging Science and Technology Research Institute, the China Institute of Printing Science and Technology, etc. are:
1. Water-based inks will be printed with flexible resin plates and gravure plates. Secondly, the key to influencing the printing quality during application is pH control.
2. Ultraviolet inks have a different degree of absorption of photons (wavelengths) due to the different colors of the color ink system. For example, the magenta transmittance is about 55%, the yellow transmittance is about 25%, and the cyan transmittance is about 14%. The black transmittance is about 12%. This doctrine is the consensus of the packaging and printing industry. Hereby, the author suggests in the color printing sequence of packaging and printing: white - black - cyan - yellow - magenta is better. Secondly, the use of photoinitiators and photosensitizers is too small, which will often result in low printing quality (caused by slow drying and adhesion). Adding 0.01% to 0.5% of the appropriate amount can increase the printing speed and shorten the photocuring time, and achieve a good quality. The request.
3. Inkjet is mostly a special charged ink, which is generally water-soluble and solvent-soluble. Although the ink is a very promising packaging and printing, outdoor advertising technology, it is too costly and difficult to popularize, so future research goals should be Put on cheap materials to explore.
4. Although functional solid packaging printing inks have been available for a short time, most packaging and printing companies are willing to try them. For example, in Shijiazhuang City, Hebei Province, the wax paper factory has been printing in the scattered parts of the process, the remaining color ink ink tank is often inconsistent with the design of large-scale printing graphics stored in the warehouse, accounting for almost 20% of ink consumption Until the scrap point of view, it only caused the plant's favor. Since the product needs to be screened at minus 20-30 degrees Celsius, it limits the production of small plants. In this regard, the main topics to be studied in the future are: (1) solubility of a single solvent; (2) non-toxicity of a mixed solvent; (3) sealing and freshness of a packaging bag; (4) heat resistance of a solid ink; (5) Universality of materials; (6) Specification of technical indicators.
5. Pure natural green packaging printing ink has been promoted for 3 years, and because it is a thermoplastic resin, it has been difficult to replace the commercially available composite ink because of its heat resistance and alkali resistance. After the authors performed the laminating test of different materials with the operators of rotary gravure printing and flexographic printing, the apparently elongated deformation or migration of graphics and images has plagued the application of the product. So far, the main direction for the future is to increase the softening (120±5°C) point of the binder in the ink system through the compounding technology.
If the defects in the product are remedied, the advantages of low ink cost and high safety factor will be furthered.
6. The testing and testing equipment, the replacement of the automatic color matching system, and the existing 29 scientific indicators for scientific testing are all based on the selection of tests, tests, and appraisals of rapid drying inks such as ultraviolet, microwave, infrared, pulsed radiation, and electron beam. If a computer is used for formula design, the stored recipes include formula number, ingredient classification, variety name, percentage content, performance use (eg color, strength, brightness, gloss, drying time and method, range of use and application method, and Related industry information, etc.) The user can freely select the formula according to its use and quantity, and can store the physical and chemical properties of various raw materials (such as appearance, color, melting point, molecular weight, toxicity, volatilization gradient of boiling point solvent, etc.). At the same time in accordance with ZBAl705-87 (print ink product classification, naming and model) professional standards for the identification of national indicators, corporate indicators, user indicators and ISO certification number and documentation sources and so on.
7. Learn lessons and rationalize the market. Stop the disorderly competition, strengthen the market forecasting intelligence analysis, and make the packaging printing inks go to the orderly benign production marketing track.
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