Ultra violet (UV) silk screen printing ink

Abstract

The invention relates to an ultra violet (UV) silk screen printing ink. The UV silk screen printing ink comprises components of, by weight, 54%-58% of Sartomer aliphatic polyurethane CN965, 24%-28% of Cytec acrylic ester activated monomers, 7%-10% of Ciba photoinitiators, 6%-8% of Ciba pigments, 0.5%-1.0% of Dow Corning surface flatting agents and 0.5%-1.0% of Dow Corning antifoaming agents, wherein the Cytec acrylic ester activated monomers are formed by mixing propoxylate oneopentylglycol diacrylate and ethoxylated trimethylolpropane triacrylate according to the ratio of 1: 1, adding the components into a stirrer to be dispersed until the temperature reaches 50 DEG C, and putting the components into a three-roller machine to be ground until the fineness of the components is smaller than or equal to 5 mu m. The UV silk screen printing ink is good in adhesive force and bending resistance performance.

Description

technical field [0001] The invention belongs to the technical field of ink, and more specifically relates to a UV screen printing ink. technical background [0002] With the continuous development of society, people's awareness of environmental protection has also been continuously strengthened, especially in the chemical industry, governments of various countries have formulated corresponding laws and regulations to strictly control VOC emissions and heavy metal pollution. The printed products that people often come into contact with in daily life are printed with inks of various properties. Therefore, ink has become one of the factors that affect the environment accordingly. Energy saving, environmental protection, and high efficiency are the three major directions for the development of modern inks. [0003] Traditional printing products in the advertising industry, such as light box advertisements, bus shelter advertisements, and sticker advertisements, are generally pr...

AI Technical Summary

Problems solved by technology

[0005] Despite the above-mentioned advantages of UV screen printing inks, there are currently technicians in the industry working hard to apply UV technology to the advertising industry, but because advertising products must have excellent bending resistance, curing performance, adhesion and excellent weather resistance, while conventional It is difficult for UV ink to achieve its excellent comprehensive performance on the substrate of advertising products at the same time

To ensure the bending performance, it is required that the UV screen printing ink cannot use high-functional resins and monomers to prevent the printing ink layer from bursting due to excessive cross-linking. However, a certain amount of pigment must be added to this type of UV screen printing ink. Resins and monomers with high functional groups are difficult to UV cure; the adhesion is due to the large volume shrinkage of conventional UV raw materials during curing, and the pigment absorbs part of the ultraviolet rays, which affects the curing degree of the resin and cannot be achieved. good adhesion

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