How much do you know about UV coating?

The UV process generally referred to in the traditional printing industry is the printing effect process, which is to apply a layer of varnish (bright, matte, inlaid crystal, glitter, etc.) on a pattern you want, mainly to increase the product Brightness and artistic effect, protect the surface of the product, its high hardness, corrosion resistance and friction, not easy to appear scratches. UV coating is a printing process that dries and cures ink by ultraviolet light. It requires ink containing photosensitizer and UV curing lamp to complete the transfer of ink. UV ink has been used in offset printing, screen printing, inkjet, Pad printing and other fields.

UV coating has good printability for most substrates. UV prints have clear dots, good tone reproduction, bright and bright ink colors, and high printing consistency. At the same time, since the UV curing process is a photochemical reaction process, both the ink layer and the varnish layer have the advantages of strong adhesion, durability, water resistance, chemical corrosion resistance, wear resistance, and aging resistance.

The entire curing system of UV coating is a solvent-free system, that is, a 100% solvent-free formula and no VOC, which just meets today's environmental protection requirements. This is another important feature of UV-curable ink, because the solid content of UV ink after curing is close to 100%, almost no VOC (organic volatiles), that is, no or little volatile organic compounds are emitted during the curing process, It will not cause more harmful environmental pollution, and has less waste, save energy, and do not have to worry about dealing with harmful flammable and explosive materials. It is an environmentally friendly ink.