Usage, variety, and specifications of multi-layer paper bags commonly used in printing
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Release time：
2021-11-09 10:27
Summary：
Multi layer paper bag
White board paper has small elasticity, toughness, and is not easily broken when folded. It is mainly used for printing packaging boxes and product decoration lining paper. In book binding, it is used for the inner cover of simple and hardcover books and for binding materials such as diameter paper (ridges) in hardcover books.
White paper can be divided into two categories based on paper surface: pink white paper and regular white paper. There are two types of bottom layers: gray and white.
Weight: 220240250280300350400 (g/m2)
Flat paper specification: 787 × 787787 × 10921092 × one thousand and ninety-two
Kraft paper has high tensile strength, including single light, double light, striped, and matte varieties. Mainly used for packaging paper, envelopes, paper bags, and printing machine drum lining.
Flat paper specification: 787 × 1092850 × 1168787 × 1190857 × one thousand one hundred and twenty
Coated paper, also known as coated paper (or coated paper), is made by coating a layer of white paste on the base paper and then pressing and polishing it. The surface of the paper is smooth, with a high whiteness. The paper fibers are evenly distributed, with consistent thickness and small elasticity. It has good elasticity, strong water resistance and tensile resistance, and excellent ink absorption and reception status.
Copper coated paper is mainly used for printing picture albums, covers, postcards, exquisite product samples, and colored trademarks. When printing on coated paper, the pressure should not be too high, and offset resin ink and glossy ink should be used. To prevent sticking dirt on the back, methods such as adding anti dirt agents or spraying powder can be used. There are two types of coated paper: single and double sided.
Weight: 70, 8010010511512012815015718020021040250 (g/m2)
Among them: 105115128157 (g/m2) imported paper with multiple specifications
Flat paper specification: 648 × 953787 × 970787 × 1092 (currently there is no web paper in China). eight hundred and eighty-nine × 1194 is an imported coated paper specification.
Relief paper is the main paper used for printing books and magazines using relief printing. Suitable for important works, scientific and technological books, academic journals, college and vocational textbooks, and other main text paper. Relief paper can be divided into four levels according to the different proportions of the paper ingredients: No. 1, No. 2, No. 3, and No. 4. The number of paper represents the quality of the paper, and the larger the number, the worse the paper.
Relief printing paper is mainly used for relief printing.
The characteristics of this paper are similar to newsprint, but not entirely the same. Due to the superior ratio of pulp and pulp to newsprint, the fiber structure of letterpress paper is relatively uniform, and the gaps between the fibers are filled with a certain amount of filler and adhesive, and also undergo bleaching treatment. This results in this paper having good adaptability for printing. Slightly different from newsprint, although its ink absorption is not as good as newsprint, it has the characteristic of even ink absorption; The water resistance and whiteness of the paper are better than those of newsprint.
Embossed paper has characteristics such as uniform texture, non fuzzing, slight elasticity, opacity, slight water resistance, and certain mechanical strength.
Weight: (49-60) ± 2g/m2
Flat paper specification: 787 × 1092850 × 1168880 × 1230; There are also some special sizes of paper.
Web size: width 78710921575;
Approximately 6000~8000m in length
Newspaper, also known as white newspaper, is the main paper used in newspapers and books; Suitable for newspapers, journals, textbooks, comic books, and other main text paper. The characteristics of newsprint are: the paper is loose and light, with good elasticity; Good ink absorption performance ensures that the ink can firmly adhere to the paper surface; After being pressed and polished, both sides of the paper are smooth and lint free, making the imprints on both sides clearer and fuller; Having a certain mechanical strength; Good opacity performance; Suitable for high-speed rotary printing.
This type of paper is produced from mechanical wood pulp (or other chemical pulp) as raw material, containing a large amount of lignin and other magazines, and is not suitable for long-term storage. If the storage time is too long, the paper will turn yellow and brittle, have poor water resistance, and is not suitable for writing. Newspaper printing ink or book printing ink must be used, and the ink viscosity should not be too high. During lithography, the moisture content of the layout must be strictly controlled.
Weight: (49-52) ± 2g/m2
Flat paper specification: 787 × 1092850 × 1168880 × one thousand two hundred and thirty
Web paper specification: width 78710921575: length approximately 6000~8000m
Bible paper Bible paper is a kind of advanced thin book paper. It is thin, strong, and folding resistant. The paper surface is white and fine. The texture is compact, smooth, slightly transparent, and has certain water resistance. Mainly used for printing dictionaries, dictionaries, manuals, classic books, and books with a large number of page numbers that are easy to carry. Bible paper has high requirements for the pressure and ink color in the printing process, so special attention must be paid to the printing process.
Weight: 25-40g/m2
Flat paper specification: 787 × one thousand and ninety-two
2023-05-28
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Tel: 0086-577-64865666
E-mail:zhang@fangzhou-printing.com
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