Which one is better, coated paper or white card?

Coated paper is also called coated printing paper, and is called pink paper in Hong Kong and other regions. It is a high-grade printing paper made of base paper coated with white paint. It is mainly used for printing covers and illustrations of high-end books and periodicals, color pictures, various exquisite product advertisements, samples, product packaging, trademarks, etc.

Coated paper is flat paper, with dimensions of 787×1092mm, 880×1230mm, and a basis weight of 70~250g/m?2. Coated paper can be divided into single-sided coated paper, double-sided coated paper, matte coated paper, and textured coated paper. According to quality, they are divided into three grades: A, B, and C. The main raw materials of coated paper are coated base paper and coating. The requirements for coated base paper are uniform thickness, small stretchability, high strength and good water resistance. The paper surface must not have spots, wrinkles, holes and other paper defects. The coating used for coating is composed of high-quality white pigments (such as kaolin, barium sulfate, etc.), adhesives (such as polyvinyl alcohol, casein, etc.) and auxiliary additives. of. This coating with high fluidity and high solid content is thinly and evenly applied to the base paper through a coater, then dried, rolled into a roll on a paper winding machine, and then sent to a super calender for calendering Finishing, final cutting, paper selection, and packaging.

The characteristics of coated paper are that the paper surface is very clean and flat, with high smoothness and good gloss. Because the paint used has a whiteness of more than 90%, extremely fine particles, and is calendered by a super calender, the smoothness of coated paper is generally 600 to 1000 seconds. At the same time, the paint is evenly distributed on the paper surface and appears white. The requirements for coated paper are that the coating is thin and uniform, without bubbles, and the amount of adhesive in the coating is appropriate to prevent the paper from powdering and linting during the printing process. In addition, the coated paper must have appropriate xylene absorption.

Grain coated paper is pressed with old felts. In addition to its smooth surface and high whiteness, it also makes the printed graphics and pictures have a three-dimensional effect. Therefore, this coated paper can be widely used. Used to print pictorials, advertisements, landscape paintings, exquisite calendars, portrait photos, etc.

White cardboard is a kind of thick paper with a large weight. In the past, some people planned to use the quantitative basis to divide: paper, cardboard and cardboard; in the early years, white thick paper (with a smooth surface, calendered, and high stiffness) with a quantitative weight of about 200g/square meter was also called thin cardboard in the Shanghai market. ), called heavy paper. In fact, it is also a kind of jam. The most common cardboard is not colored and is commonly called white cardboard. If it is colored, it is called color cardboard according to the color. The surname of white cardboard is "white", so the whiteness requirements are very high. The whiteness of grade A is not less than 92%, grade B is not less than 87%, and grade C is not less than 82%. If the whiteness exceeds 90%, it will be a bit "bright and dazzling".