Coated paper is a kind of advanced printing paper, which is made of base paper coated with white paint. It is mainly used for printing the covers, illustrations, color pictures, advertisements, samples, packaging and trademarks of all kinds of exquisite commodities.
Coated paper is also called printed coated paper. The surface of the base paper is coated with a layer of white paint, and the base paper is made of super calendering. It is divided into single-sided paper and double-sided paper, and the paper surface is divided into light splitting and cloth grain. The paper has smooth surface, high whiteness, good ink absorption and ink adhesion. Mainly used for offset printing and gravure printing of fine screen printing products such as advanced picture books, calendars, books and periodicals. The disadvantage is that the powder is easy to stick and fall off after being wet, so it can't be stored for a long time.
Coated paper is flat paper, with dimensions of 787× 1092mm and 880× 1230mm, and the basis weight is 70 ~ 250 g/m2. Coated paper can be divided into single-sided coated paper, double-sided coated paper, matt coated paper and cloth coated paper. According to the quality, it is divided into three types: A, B and C. The main raw materials of coated paper are coated base paper and paint.
The requirements for coated base paper are uniform thickness, small flexibility, high strength and good water resistance. There are no paper defects such as spots, wrinkles and holes on the paper surface. The coating used for coating consists of high-quality white pigment and binder (such as polyvinyl alcohol and casein). ) and auxiliary additives.
The coating with high fluidity and high solid content is thinly and evenly coated on the base paper by a coating machine, then dried, rolled into a roll on a paper winder, then sent to a super calender for calendering finishing, and finally cut, selected paper and packaged.