Water based ink PK alcohol soluble ink

As green environmental protection has gradually become the theme of development in the 21st century, green marketing, which promotes energy conservation and environmental protection and promotes low-carbon emission reduction, will light up. The production and use of green inks are increasingly becoming the consensus of the ink and printing industries.

Therefore, a series of environmentally friendly inks such as non-aromatic hydrocarbon solvent inks (such as alcohols, ester-soluble inks), water-based inks, UV inks, and soybean oil-based inks have been successively introduced, and the environmental protection of inks is gradually deepening.

Water-based inks are environmentally friendly inks that are widely used. It is referred to as ink and ink, and is an ink prepared by combining physical and chemical processes with a specific aqueous polymer resin, a pigment, water, and a solubilizer. The difference in solvents is the biggest difference between aqueous inks and solvent inks. Solvent-based inks are soluble in organic solvents such as **, ethyl acetate, ethanol and the like. The water-soluble ink was dissolved in water and a small amount of alcohol (about 3% to 5%). Water was used as a carrier for dissolution.

Water-based inks are currently mainly used in flexographic printing. Its environmental safety is mainly reflected in no pollution to the atmospheric environment; it can reduce residual toxic substances on the surface of printed matter to ensure food hygiene and safety; it can reduce resource consumption and environmental protection costs; it can improve the safety of working environment and ensure the health of contact operators. aspect.

Although water-based inks have significant advantages, there are still many defects, which also make it a bottleneck in the development. For example, in the case of color fastness, abrasion fastness, glossiness, and difficulty in color correction, it is not yet comparable to the benzene-based solvent series. In addition, although water-based gravure inks have attracted attention as an alternative to ** inks, due to the higher surface tension of water, the inks are difficult to wet, dry slowly, and the solvent properties are still not achieved in printing performance and quality. Ink standard. In addition, in order to use water-soluble inks in gravure printing presses, advanced technologies are required not only for inks and resins, but also for gravure printing equipment.

Since water-based inks are not yet able to completely replace inks in the short-term, the ink industry has also been working hard to develop alcohol-soluble inks that are environmentally acceptable.

Alcohol-soluble inks are inks that can be dissolved and diluted with alcohols. The alcohol solvent is similar to the water-soluble one, and it is also a polar solvent. The water-based ink has almost all its environmental characteristics. The biggest advantage of mellow ink is that there are no special requirements for the equipment, and it will not bring cost problems to the manufacturers in the equipment transformation. At the same time, it has the characteristics of fast printing speed, low odor, and no benzene, which can solve the problems caused by the health of ** type inks and the influence of solvent residues on the quality of packaged foods. Countries such as South Korea, Singapore, etc. are gradually adopting alcohol-soluble gravure inks to replace **-type inks, and traditional ink-type inks will eventually be eliminated.

However, alcohol-soluble inks are more expensive to produce than aqueous inks. Moreover, the alcohol-soluble inks sold on the market generally contain ester solvents or a small amount of benzene, and there are not many enterprises that can truly use alcohol as a solvent. Alcohol-soluble ink is a transitional product based on the immature production technology of water-based ink. However, both inks are technically incompletely mature and need further study and improvement.

Under the background of low-carbon sustainable development, the development of environment-friendly ink has become a general trend. The widespread use of environment-friendly ink will certainly make a major contribution to the ecological environment of China and all humanity. At present, due to technical and raw material restrictions, domestic companies with good environmental inks are not well-established, and there is a huge gap in the market. Therefore, anyone who can achieve breakthrough in ink environmental protection technology will surely occupy the market.