Common paper methods for the most popular printing

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The common paper methods of printing knowledge

the printing methods are different, and the corresponding paper must be selected according to the requirements and characteristics of use and printing process. Here are some common paper specifications for publishing, for your reference:

1 Letterpress paper

letterpress paper is the main paper used when letterpress printing books and magazines. It is suitable for important works, scientific and technological books, academic journals, college and technical secondary school textbooks and other text paper. Relief paper can be divided into four levels: No. 1, No. 2, No. 3 and No. 4 according to the different composition of paper materials. The number of paper represents the quality of paper. The larger the number, the worse the paper

relief printing paper is mainly used for relief printing. The characteristics of this kind of paper are similar to that of paper, but not exactly the same. The fiber structure of letterpress paper is relatively uniform, and the gap between fibers is filled with a certain amount of filler and rubber, and it is also bleached, which forms this kind of paper has good adaptability to printing. Although its ink absorption is not as good as that of paper, it has the characteristics of uniform ink absorption; The water resistance and whiteness of paper are better than that of paper

relief paper has the characteristics of uniform texture, no fuzzing, slight elasticity, opacity, slight water resistance, and certain mechanical strength

weight: (49 ~ 60) 2g/㎡

sheet paper specification as of 2014: 7871092850 1168800 1230; In addition, there are some special sizes of paper

web specifications: width 78710921575; The length is about 6000m ~ 8000m

2 Paper

paper, also known as white newspaper, is the main paper for newspapers and books. Suitable for newspapers, periodicals, textbooks, comics and other text paper. The characteristics of paper are: the paper is loose and light, and Honeywell's fluorochemicals business department produces and supplies refrigerants that do not destroy the ozone layer at the same time, with good elasticity; Good ink absorption performance ensures that the ink can be well fixed on the paper. After calendering, both sides of the paper are smooth and lint free, so that the imprints on both sides are clear and full; Have certain mechanical strength; Good opacity; Suitable for high-speed rotary printing

this paper is produced from mechanical wood pulp (or other chemical pulp) and contains a lot of lignin and other impurities, which is not suitable for long-term storage. If the storage time is too long, the paper will turn yellow and brittle, and the water resistance is poor, so it is not suitable for writing, etc. Newspaper printing ink or book printing ink must be used. The viscosity of the ink should not be too high. The moisture of the page must be strictly controlled during lithography

weight: (49 ~ 52) 2g/㎡

flat paper specification: 787 1092850 1168800 1230

web paper specification: width 78710921575; The length is about 6000m ~ 8000m

3 Offset paper

offset paper is mainly used for lithographic (offset) printing machines or other printing machines to print more advanced color prints, such as color pictorials, picture books, posters, color printing trademarks, and some advanced book covers, illustrations, etc

offset paper is divided into special size, No. 1, No. 2 and No. 3 according to the proportion of paper size, which can be divided into single-sided and double-sided, as well as super calendering and ordinary calendering

offset paper has small flexibility, uniform absorption of ink, good smoothness, tight texture, opaque, good whiteness, and strong water resistance. Conjunctival offset ink and lead printing ink with good quality should be selected. The viscosity of the ink should not be too high, otherwise there will be de dusting and galling. It is also necessary to prevent the back from sticking dirty. Generally, Anti Dirt agent, powder spraying or lining paper are used

weight: 50, 60, 70, 80, 90100120150180 g/㎡

flat paper specification: 787 1092850 1168800 1230

web paper specification: width 7871092850

4 Coated paper

coated paper is also called coating paper. This paper is made by coating a layer of white slurry on the base paper and calendering. The paper surface is smooth, the whiteness is high, the paper fiber is evenly distributed, the thickness is consistent, the elasticity is small, the surface is smooth, the whiteness is high, the paper fiber is evenly distributed, the thickness is consistent, the elasticity is small, the elasticity is good, the water resistance and tensile resistance are strong, and the absorption and reception of ink are very good. Coated paper is mainly used for printing picture books, covers, postcards, exquisite product samples and color trademarks. When printing on coated paper, the pressure should not be too high. Offset resin ink and bright ink should be selected. To prevent the back from sticking dirty, you can add Anti Dirt agent, spray powder and other methods. Coated paper has two types: single-sided and double-sided

weight: 70, 80100105115120128150157180200210240250 g/㎡, of which: 105115128157 (g/m2) imported paper specifications are more

flat paper specifications: 648853787 970787 1092 (there is no web paper in China at present). 8891194 is imported coated paper specification

5 Painting newspaper

the state has implemented a major project of "research and development and utilization of key new materials". The texture of painting newspapers is thin and smooth, which is used for printing pictorials, and pictures are accelerated to take production, study and research as the basis for books and posters

weight: 65, 90120 (g/㎡)

flat paper specification: 690 960787 1092

6 Book paper

written paper is also called book cover paper, which is used to print the cover of books. When making paper, the book paper is colored with grey, blue, beige and other colors

weight: 80100120 (g/㎡)

flat paper specification: 690 960787 1092

7 Embossed paper

embossed paper is a kind of paper specially produced and used for cover decoration. There is a less obvious pattern on the surface of the paper. The color is divided into gray, green, beige and pink, which are generally used to print monochrome covers. Embossed paper kneels, and the spine is easy to break when binding. When printing, the paper bending is large, and it is difficult to feed paper, which affects the printing efficiency

weight: 120 ~ 40 g/㎡

sheet paper specification: 7871092

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