What is the surface coating material of coated paper?

The surface coating of coated paper is generally composed of a variety of materials, mainly including vegetable oils, resins, fillers and auxiliaries. Each of these components has a role in the coating:

Vegetable oils and resins are the main paint components, which help to form the main structure of the coating and provide good printing performance and gloss.

Fillers are used to adjust the gloss and slippability of the coating to achieve a specific printing effect.

Additives can improve the wear resistance and antibacterial properties of the coating, thereby enhancing the durability of coated paper.

In addition, according to different types of coated paper and specific needs, the coating agent will also be different. For example, polyethylene coating is composed of polyethylene particles and plasticizers, etc., which has good luster, water resistance and heat resistance. The polyester coating is mainly composed of polyester resin and plasticizer, which has high tensile and heat resistance properties. UV photocurable coating needs to be cured quickly by ultraviolet irradiation after coating, and has good gloss and anti-viscosity. The water-based coating is mainly composed of water-based resin, which has environmental protection properties and high water resistance.

In general, the surface coating of coated paper is a complex composite material, and its specific composition will be adjusted and optimized according to the paper's use, performance requirements and production costs.