What are the components of circular colored copperplate paper?

Circular colored copperplate paper is mainly composed of the following components:

1、 Basic pulp

Bleached chemical wood pulp: One of the basic materials for copperplate paper is bleached chemical wood pulp, which provides the basic structure and strength of the paper.

Bleached chemical straw pulp: Sometimes bleached chemical straw pulp is partially used to reduce costs or meet specific paper performance requirements.

2、 Coating layer

White pigment: The main components of the coating layer include high-quality white pigments such as kaolin, talcum powder, calcium carbonate, barium sulfate, titanium dioxide, etc. These pigments give the paper high whiteness and good covering power.

Adhesive: Adhesives are used to firmly adhere solid particles such as white pigments to paper substrates. Common adhesives include polyvinyl alcohol, casein, modified starch, synthetic latex, etc.

Auxiliary additives: Coatings also include various auxiliary additives, such as gloss agents, hardeners, plasticizers, dispersants, wetting agents, whitening agents, fluorescent whitening agents, toners, etc. These additives help improve the glossiness, hardness, water resistance and other properties of paper, and adjust the color and tone of paper.

3、 Processing aids

In the manufacturing process of copperplate paper, other processing aids such as lubricants, release agents, etc. may also be used to improve the processing performance and product quality of the paper.

In addition to the basic components mentioned above, the color of circular colored copperplate paper comes from the ink or dye used in the printing process, which will be accurately printed on the surface of the paper according to design requirements.

Overall, the composition of circular colored copperplate paper is complex and fine, and various components work together to determine the quality and performance of the paper.