There are many types, types and specifications of printed papers used in printing. The requirements and printing methods are different. Therefore, the corresponding paper must be selected according to the requirements and characteristics of the use and printing process. The purposes, varieties and specifications of some commonly used papers for publication are now introduced as follows for designers and publishing business personnel to choose from.
Letterpress paper Letterpress paper is the main paper used to print books and magazines in letterpress. It is suitable for the text of important books, scientific books, academic journals, textbooks for universities and colleges, etc. Relief paper can be divided into four levels: No. 1, No. 2, No. 3, and No. 4 according to the distribution ratio of paper materials. The number of the paper represents the quality of the paper. The larger the number, the worse the paper quality.
Letterpress printing paper is mainly used for letterpress printing. The characteristics of this paper are similar to newsprint, but not exactly the same. Because the ratio of paper pulp and the knocking of the pulp are better than that of 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 glue, and they are also bleached This paper has good adaptability to printing. Slightly different from newsprint, its ink absorption is not as good as newsprint, but it has the characteristics of uniform ink absorption; water resistance and whiteness of paper are better than newsprint. Relief paper has the characteristics of uniform texture, lint-free, slightly elastic, opaque, slightly water-resistant, and certain mechanical strength.
Weight: (49 ～ 60) ± 2g / m2
Flat paper specifications: 787 × 1092, 850 × 1168, 880 × 1230; there are also some special size paper.
Roll paper specifications: width 787, 1092, 1575;
Length about 6000 ～ 8000m
Newsprint Newsprint, also known as white newspaper, is the main paper used for newspapers and books; it is suitable for newspapers, periodicals, textbooks, picture books and other text papers. The characteristics of newsprint are: the paper is light and light, and has good elasticity; the ink absorption performance is good, which ensures that the ink can be fixed on the paper surface; after the paper is calendered, the two sides are smooth and not lint, so that both sides The imprint is relatively clear and full; has a certain mechanical strength; good opacity; suitable for high-speed rotary printing. This kind of paper is produced from mechanical wood pulp (or other chemical pulp) as a raw material, contains a lot of lignin and other magazines, it is not suitable for long-term storage. If the storage time is too long, the paper will turn yellow and become brittle, the water resistance is poor, and it is not suitable for writing. Printing ink or book ink must be used, the viscosity of the ink should not be too high, and the moisture of the printing surface must be strictly controlled during lithographic printing.
Weight: (49 ～ 52) ± 2g / m2
Flat paper specifications: 787 × 1092, 850 × 1168, 880 × 1230
Roll paper specifications: width 787, 1092, 1575: length about 6000 ～ 8000m
Offset paper Offset paper is mainly used by offset (offset) printing presses or other printing presses to print higher-level color prints, such as color pictorials, picture albums, posters, color printed trademarks, and some high-end book covers, illustrations, etc. Offset paper is divided into three types: special number, number one and number two according to the proportion of paper pulp. There are single-sided and double-sided, and there are two levels of super calendering and ordinary calendering. Offset paper has low stretchability, uniform absorption of ink, good smoothness, tight and opaque texture, good whiteness, and strong water resistance. Should use conjunctival offset printing ink and better quality printing ink. The viscosity of the ink should not be too high, otherwise there will be de-powdering and pulling. It is also necessary to prevent the back from sticking and staining. Generally, anti-fouling agent, powder spraying or interleaving paper are used.
Weight: 50, 60, 70, 80, 90, 100, 120, 150, 180 (g / m2)
Flat paper specifications: 787 × 1092, 850 × 1168, 880 × 1230
Web specifications: width 787, 1092, 850:
Coated paper, also known as coated paper, is made by coating a layer of white paste on the base paper and calendering it. The surface of the paper is smooth, the whiteness is high, the paper fibers are evenly distributed, the thickness is uniform, the stretchability is small, it has good elasticity and strong water resistance and tensile properties, and it has good absorption and reception status for ink. Coated paper is mainly used for printing pictures, covers, postcards, exquisite product samples and color trademarks. When printing on coated paper, the pressure should not be too high, and offset printing resin ink and bright ink should be used. To prevent the back from sticking and staining, methods such as adding antifouling agent and dusting can be used. There are two types of coated paper, single-sided and double-sided.
Weight: 70, 80, 100, 105, 115, 120, 128, 150, 157, 180, 200, 210, 240, 250 (g / m2)
Among them: 105, 115, 128, 157 (g / m2) imported paper specifications are more flat paper specifications: 648 × 953, 787 × 970, 787 × 1092 (there is no domestic roll paper) 889 × 1194 is the specification of imported coated paper.
Draw newspapers The texture of newspapers is white and smooth, which is used to print pictorials, albums and posters.
Weight: 65, 90, 120 (g / m2)
Flat paper specifications: 787 × 1092
Written paper Written paper, also called cover paper, is paper used for printing book covers. Pigments are added when writing paper, and they have gray, blue, beige and other colors.
Weight: 80, 100, 120 (g / m2)
Flat paper specifications: 690 × 960, 787 × 1092
Embossed paper Embossed paper is a cover paper specially produced. There is a less obvious pattern on the surface of the paper. The colors are gray, green, beige and pink, and are generally used to print monochrome covers. Embossed paper is brittle and the spine easily breaks when bound. When printing, the paper has a large degree of curvature and it is difficult to feed paper, which affects the printing efficiency.
Weight: 120 ～ 40 g / m2
Flat paper specifications: 787 × 1092
Dictionary paper Dictionary paper is a kind of high-grade thin paper for books and periodicals. The paper is thin, strong and resistant to folding. The surface of the paper is white and meticulous. Mainly used for printing dictionaries, dictionaries, manuals, classic books and books with many page numbers and easy to carry. Dictionary paper has high requirements on the pressure and ink color in the printing process, so special attention must be paid to the process when printing.
Weight: 25 ～ 40g / m2
Flat paper specifications: 787 × 1092
Unedged paper Unedged paper is thin and soft, light yellow, has no water resistance, and has good ink absorption. Unedged paper should only be printed on one side and is mainly used for costume books.
Writing paper Writing paper is paper used for ink writing, and the paper is required to be stable when writing. Writing paper is mainly used for printing exercise books, diaries, forms and account books. The writing paper is divided into special numbers, number 1, number 2, number 3 and number 4.
Weight: 45, 50, 60, 70, 80 (g / m2)
Flat paper specifications: 427 × 569, 596 × 834, 635 × 1118, 834 × 1172, 787 × 1092
Web specifications: 787, 1092
Typing paper Typing paper is a thin sheet of paper. The paper is thin and full of toughness. It is required not to penetrate holes when typing, and it will not be scratched by the pen tip when rewriting with a hard pen. It is mainly used for printing documents, forms and multiple copies of duplicate certificates. Used as a sheet of interleaving paper and paper for printing and packaging in books. Typewriting paper has white, yellow, red, blue, green and other colors.
Weight: 24 ～ 30 g / m2
Flat paper specifications: 787 × 1092, 560 × 870, 686 × 864, 559 × 864
Youfeng paper Youfeng paper is used in printing various copybooks and paper for printing and packaging.
Weight: 25 ～ 28 (g / m2)
Flat paper specifications: 787 × 1092
Copy paper copy paper is thin and flexible, suitable for printing multi-copy copy book; used in book binding to protect art works and play a beautiful role.
Weight: 17 ～ 20 (g / m2)
Flat paper specifications: 787 × 1092
White plate paper White plate paper has small elasticity, toughness, and is not easy to break when folded. It is mainly used for printing packaging boxes and commodity decoration backing paper. In book binding, it is used for binding materials such as back cover of simple hardcover books and radial paper (ridge strips) in hardcover books.
White paper is divided into two types: powder white paper and ordinary white paper. According to the bottom layer, there are two kinds of gray background and white background.
Weight: 220, 240, 250, 280, 300, 350, 400 (g / m2)
Flat paper specifications: 787 × 787, 787 × 1092, 1092 × 1092
Kraft paper Kraft paper has a high tensile force, there are single light, double light, stripes, non-grain, etc. It is mainly used for packaging paper, envelopes, paper bags, etc. and printing machine drum wrapping.
Flat paper specifications: 787 × 1092, 850 × 1168, 787 × 1190, 857 × 1120
Interactive Flat Panel,interactive touch screen,interactive screen,interactive panel,interactive touch monitor
Guangzhou Ruixin Touch Control Technology Co., Ltd. , https://www.weetaach.com