Water-based ink composition

Abstract

The invention discloses a water-based ink composition, and the water-based ink composition mainly comprises the following components by weight: 40-80 parts of water, 6-16 parts of a pigment, 4-12 parts of lacquer tree seed kernel oil, 4-12 parts of cottonseed oil, 0. 1-1.0 part of hemicellulose, 1-3 parts of an alkali solution, 2-12 parts of lignin and 2-10 parts of polyol; the water-based ink hasgood colouring property, has high base material adhesion fastness and durability, and has the characteristics of good spreading performance on the surface of a base material. At the same time, the water-based ink does not contain alcohol and ether in additives, and organic amines can achieve VOC-free release characteristic.

Description

technical field [0001] The invention relates to the field of water-based ink, more specifically, it relates to a water-based ink composition. Background technique [0002] Ink is one of the most critical factors to ensure printing quality. Existing inks used for printing always have various problems: some inks contain benzene and ketone derivatives, which are more polluting to the environment; some inks have poor adaptability, and cannot guarantee the adhesion to different papers. Or the overall adhesion is not strong enough; some inks have good overall performance, but the ingredients are too toxic, which has chronic physical harm to printing workers. [0003] Water-based ink, referred to as ink for short, and flexographic water-based ink, also known as liquid ink, is a uniform paste-like substance composed of binders, pigments, additives and other substances. It is mainly composed of water-soluble resins, organic pigments, solvents and related additives through compound ...

AI Technical Summary

Problems solved by technology

Existing inks used for printing always have various problems: some inks contain benzene and ketone derivatives, which pollute the environment; some inks have poor adaptability, and cannot guarantee the adhesion to different papers. Or the overall adhesion is not strong enough; some inks have good comprehensive performance, but the ingredients are too toxic, which has chronic physical harm to printing workers

[0011] In the above invention, the water-based ink is mainly prepared by mixing resin, alcohol solvent and other additives. Compared with the solvent-based ink, the obtained water-based ink has better environmental protection performance, does not contain aromatic hydrocarbon solvents, and the VOC content is also greatly reduced. However, it still cannot achieve zero content, and still contains a small amount of alcohol, ether, and organic amines