1, brochures generally use coated paper. Coated paper is divided into smooth copper and matt copper (also called matt paper). The most common weights are 70g, 80g, 128g, 157g, 200g and 250g.
2, less than 60g, called lightweight coated paper (generally thinner paper for supermarket publicity).
3, more than 300g is called cardboard, which is thick and hard? And the cover of the book is double-sided coated paper,120.160g, and 200g is everywhere.
4, translucent sulfuric acid paper, the cover is generally coated paper, coated paper is generally covered with film.
Extended data:
Raw materials and properties of offset paper. Offset paper is generally made of bleached cork chemical pulp and appropriate bamboo pulp. When processing offset paper, the amount of filler and sizing is large, and some high-grade offset paper also needs surface sizing and calendering. Offset paper uses the principle of ink balance when printing, so it needs good water resistance, dimensional stability and strength.
Offset paper is generally used to print picture books, color illustrations, trademarks, covers, ring linings, high-end books and books. In recent years, due to the improvement of people's culture and living standards, books and materials are also developing towards high-grade, and more and more books and periodicals are printed on offset paper.
Specification of offset paper. The specifications of offset paper are the same as those of the latter two kinds of paper. For other specifications, please refer to GB 147 Size of Base Paper for Printing, Writing and Drawing, and the size error and skewness shall not exceed 3 mm ... There are many kinds of offset paper, including 60, 70, 80, 90, 120, 150 and/KLOC-0.
References:
Baidu encyclopedia-offset paper