Discussion on Some Technical Problems in Waterborne Packaging Printing Inks (I)

First, the historical mission of green water-based ink in the protection of the environment, save energy, reduce pollution and recycling and safe production of the call, China's packaging and printing of water-based ink in a short period of 20 years at 35% of its usage in the other The first of packaging printing inks. Looking at a roller can be used to print a variety of different sizes of information graphics, thus eliminating the need for many different types of perimeter printing roller; ink automatically pumped into the ink, ended the ink transfer, inking device pairs Loss of ink viscosity.... The more high-end, especially water-based printing inks, the stronger the printing characteristics and the narrower the range of adaptation. In particular, the nature of its printing function lies in the promotion and guidance of a new trend in packaging and printing. It is not a best-selling ink product. If special printing inks are replaced with another packaging carrier, the ink may be of higher quality than other inks. Therefore, in today's world, many packaging and printing companies are willing to use the ink companies to design and manufacture inks for them, rather than buying batches of brand-name ink products. Many employees do not understand these reasons, blindly catch up with the trend, see there is a new ink brand on superb, that their own packaging and printing companies will be able to achieve high added value and bright and beautiful after use. The result, on the contrary, fell to the end of the game.
Ink as a green ink is only relatively speaking, (absolute green ink should be non-toxic, no pollution, can be recycled or recycled). The solubilizer ethanol, which can cause blood poisoning and kidney poisoning, has not been removed from the ink system yet. Alcohols with anesthetic but injury to the nerve center still serve as the true (strong) solvent for the ink. Of course, these should only be watched, put on gloves or wash with water. The development and application of green ink and ink is a competitive sport in the packaging ink industry in the economic globalization space. We must have a strong sense of urgency, a sense of crisis, and social responsibility. In the network of information, the temporary product quality of an individual company leads to a failure not to be deciphered by the strong scientific and technological power of others, and to overcome and squeeze the strong economic power. . What's more, nearly 1,000 companies that have a complete image of dispersal have often resorted to sporadic bravery and have been unable to work together to compete with advanced foreign companies. It is even less likely to solve the above-mentioned similar technical problems in a short period of time (in the period of protection).
Second, the role of coupling agent in the ink and usage In today, the packaging and printing industry needs more updated products. In the application of compounding technology and additives for printing inks, although our products, especially printing operations, are more simplified, there are still many difficulties and problems, such as poor gloss, difficult overprinting, and high costs.
In the above issues, we have boldly adopted the nationally exempted Jiangsu Yizheng Tianyang Chemical Co., Ltd.'s coupling agent, TM-200S, in combination with an electrically neutral super dispersant. It is used in ink-and-ink products and is used in printing ink systems. Different pigments, fillers and binders, through coupling, combine the excellent properties of each component with the new individual ink manufacturing process. This method has been widely used in the coating industry and has shown better than colorants and links. The more prominent advantages of the agent.
After practical screening of dozens of coupling agents, the TM-200S produced by Yizheng Tianyang Chemical Factory is one of the preferred materials for ink painting. Its characteristics are: high active calcium can be filled in the ink; improve the degree of branching of the ink system, reduce the thickness of the ink; is conducive to the affinity of pigments, fillers and printing substrates, improve the adhesion and strength of ink; can be any Proportional mixing, not only adapted to water-soluble packaging printing inks, but also to oil-soluble and solvent-based packaging printing inks; ink products with coupling agents, the storage period has been significantly extended; can also be added anywhere before and after printing or printing.
TM-200S coupling agent belongs to the chelating type. Due to its good water resistance, it can be dissolved in organic solvents and coated with pigments or fillers or used directly in solvent-based printing inks. It can also be made with alkanolamine or amine reagents. The polyactive group - after quaternization, dissolves in water to coat the pigments, fillers, or is used directly in aqueous inks.
1. Application (1) Normal-temperature dry type water-soluble alkyd resin is used as a driers, which can replace the previous metal soap driers. It can significantly improve the mechanical properties, weather resistance and salt spray resistance of the printing ink film. And anti-yellowing. Effective UV absorbers, when printed, manually wash the printer, plate, ink roller, ink fountain and tools, can effectively protect the skin.
(2) TM-200 coupling agent can make acrylic emulsion ink thixotropic, convenient printing operation, in addition to not sag, but also improve the ink film's water resistance, abrasion resistance and washing resistance.
(3) As the most commercially available chelating agent TM-200 coupling agent, it is not only difficult to be hydrolyzed, but also completely soluble in water, the aqueous solution is clear and stable, and in addition to improving the dispersion, the ink manufacturing cycle is shortened, and The short-term initial anti-rust effect is an indispensable curing agent for unsaturated polyester inks (photo-curing and two-component curing).
(4) The coupling agent is a printing ink system in which a vinyl resin is a binder, which not only improves the dispersibility of titanium dioxide in dioctyl phthalate and titanium dioxide in the aqueous phase, but also enhances the filling amount (reducing the ink material). Cost) and wear resistance improve the brightness and adhesion of printed graphics.
(5) In addition, water-soluble packaging printing inks using rosin (ester) as a binder can achieve high gloss only by adding 0.3% to 1%. The actual application of the material can reduce the viscosity of the ink and improve the freeze resistance of the ink. (To be continued)