Printing is an interdisciplinary and comprehensive application technology of materials, chemicals, sound, light, machinery, electronics, computer information processing, etc. With the development of digital technology, display readers and audio media technology, traditional analog printing is increasingly limited to specific fields. Greening, intelligence, and digitization have become globally recognized printing technology development trends. The manufacturing attributes of printing technology are becoming increasingly prominent. Followed by significant changes in printing ink manufacturing and application technology.
Water-based gravure printing ink is approved
At present, most china printing companies that use solvent gravure inks have achieved energy conservation and emission reduction goals through solvent recycling and reuse. The gravure printing of many china companies, based on recycling and reuse technologies such as RTO (regenerative thermal incinerator) that emits exhaust gas, has already met the standards. At the same time, mandatory environmental protection policies have promoted the development of water-based gravure printing inks.
After more than 10 years of investment, the print quality and adhesion fastness of water-based gravure printing inks at home and abroad have been recognized by users, with an annual growth rate of 5%-6%. However, to meet the transfer performance and drying performance of water-based inks. The printing plate and drying device need to be modified. The comprehensive investment-output advantage is not great. And most water-based inks are not fully water-based.
Researching and developing low-cost, high-performance water-based resins is still the research direction of current ink technology. Resin modification and comprehensive utilization of surfactants are optional measures. At present, water-based ink technology in the United States, Japan, and Germany is still at the forefront of the world.
Functional printing inks are developing rapidly
Functional materials refer to materials that have specific functions through the effects of light, electricity, magnetism, heat, chemistry, biochemistry, etc. Different from structural materials, functional materials are indispensable basic materials for preparing functional devices. PCB (flexible printed circuit board), flexible display devices, large health detection systems, clean energy vehicles, fast movable energy storage devices, military camouflage, lightweight aerospace devices, etc., in terms of light and flexible functional inks and their printing technology, all have direct needs.
Related colorant micronization and dispersion technology, ink ingredient functionalization promotion technology, dry film forming technology, interlayer affinity and connection technology are all indispensable content in the development of ink. Film-forming resin materials have an important impact on the microstructure, adhesion fastness, and functional formation and performance of the functional material ink layer. They are also the key to the success of functional inks.
As the level of science and technology continues to improve, and new materials continue to emerge, the application fields of functional inks continue to expand. It has a profound impact on production and life, produces significant economic and social benefits, and expands space for the application of printing technology. For example, carbon materials, conductive polymer materials and organic-inorganic composite functional ink technologies are used in fields such as energy, intelligent packaging, medical health, and architectural decoration. Functional ink technologies such as conductive inks, color-changing inks, and luminescent inks are used in electronic devices, electrochemistry, etc. There are potential application values in many fields such as testing, printing display, food packaging, and 3D printing.
In addition, the low-temperature sintering high-conductivity nano-silver series water-based ink can be freely diluted and has passed the technical appraisal of the China Packaging Federation. And was jointly approved by the Beijing Federation of Trade Unions, Beijing Science and Technology Commission, Beijing Economic and Information Technology Commission and the Intellectual Property Office. First Prize for Outstanding Innovation Achievements.
Energy curing technology becomes research focus
In terms of energy-curing inks, thermal curing is a mature technology, but energy consumption is relatively high. UV curing has been widely used. EB (electron beam) ink is the focus of radiation curing technology research.
Coating industry data shows that UV curing ink has a thin layer and takes 3-5 seconds. Electron beam curing ink is solvent-free, takes 0.005 seconds to cure. It consumes 1/5 of the energy of UV curing, has no thermal reaction, and is highly safe to operate. . Reducing the cost of electron beam ink, realizing the localization of electron beam equipment, and optimizing the output of inert environment and anti-ozone are the development directions of electron beam ink technology.
Internationally, electron beam inks originate from American Sun Chemical, Flint, Japan Toyo, Japan D&E, etc. In China, Shaanxi Beiren already has electron beam curing printing equipment, and its market application has yet to be promoted.
Generally speaking, the development of printing ink technology serves the needs of printing manufacturing. It is closely related to dry film forming technology, is subject to functional material preparation and colorant processing technology. And must comply with national and local industrial policies. In the long run, the greening of the entire ink industry chain is a development trend in china printing industry.
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