1.
Letterpress paper is the main paper for letterpress printing books and magazines. It is suitable for important works, scientific and technological books, academic publications and college teaching materials. Embossed paper can be divided into four grades according to the composition ratio of paper materials: 1, 2, 3 and 4. The quantity of paper represents the quality of paper. The greater the quantity, the worse the quality of paper. ?
Relief printing paper is mainly used for relief printing. The characteristics of this kind of paper are similar to those of newsprint, but they are not exactly the same. The fiber structure of letterpress paper is relatively uniform, at the same time, the gaps between the fibers are filled with a certain amount of fillers and sizing agents, and after bleaching, this paper with good printing adaptability is formed. Although its ink absorption is not as good as newsprint, it has the characteristics of uniform ink absorption; The 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 some special sizes of paper?
Web specification: width 787, 1092, 1575?
The length is about 6000m-8000m?
2. Newsprint?
Newsprint, also known as white newspaper, is the main paper of newspapers and books. Suitable for newspapers, periodicals, textbooks, comics and other text papers. Newsprint is characterized by: the paper is light and elastic; Good ink absorption ensures that the ink can be better fixed on the paper. After calendering, both sides of the paper are smooth and lint-free, so that the printed matter on both sides is clear and full; Have certain mechanical strength; Good opacity; Suitable for high-speed rotary printing. ?
This kind of paper is made of mechanical wood pulp (or other chemical pulp) and contains a lot of impurities such as lignin, which is not suitable for long-term storage. If the paper is stored for too long, it will turn yellow and brittle, and its water resistance is poor, so 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 water content of the page must be strictly controlled during lithography. ?
Weight: (49-52) 2g/m2?
Specification of plain paper: 787×1092,850×1168,880×1230?
Web specification: width 787, 1092,1575; The length is about 6000m-8000m?
3. Offset paper?
Offset paper is mainly used for lithography (offset printing) presses or other presses to print advanced color printed matter, such as color pictorial, picture album, poster, color printing trademark, and some advanced book covers and illustrations. ?
Offset paper can be divided into special number, 1 number, No.2 and No.3 according to the proportion of pulp, which can be divided into single-sided and double-sided, and there are two grades of super calendering and ordinary calendering. ?
Offset paper has small flexibility, uniform ink absorption, good smoothness, compact and opaque texture, good whiteness and strong water resistance. Conjunctival offset printing ink and good quality lead ink should be selected. The viscosity of ink should not be too high, otherwise there will be powder removal and galling. Also to prevent the back from getting dirty, generally use antifouling agent, dusting or lining paper. ?
Weight: 50,60,70,80,90, 100, 120, 150, 180 (g/m2)?
Specification of plain paper: 787×1092,850×1168,880×1230?
Web specification: width 787,1092,850?
4. coated paper?
Coated paper, also known as coated paper, is made by coating a layer of white slurry on the base paper and calendering. The paper has smooth surface, high whiteness, uniform distribution of paper fibers, uniform thickness, low flexibility, good elasticity, smooth surface, high whiteness, uniform distribution of paper fibers, uniform thickness, low flexibility, good elasticity, strong water resistance and tensile resistance, and very good absorption and acceptability of ink. Coated paper is mainly used for printing picture books, covers, postcards, exquisite product samples and colored trademarks. When printing coated paper, the pressure should not be too high, and offset printing resin ink and bright ink should be used. In order to prevent the back from sticking dirty, methods such as adding antifouling agent and dust removal can be adopted. There are two types of coated paper: single-sided and double-sided ?
Weight: 70,80, 100, 105,15, 120, 128, 150,/kloc-.
Among them: 105, 1 15, 128, 157(g/m2) with more imported paper specifications?
Specification of plain paper: 648×853, 787×970, 787× 1092 (there is no roll paper in China at present). 889× 1 194 is an imported coated paper specification?
5. draw a newspaper?
Colored newspapers are thin and smooth, and are used to print pictorial, picture books and posters. ?
Weight: 65,90, 120 (g/m2)?
Flat paper specifications: 690× 960,787×1092?
6. A written paper?
Writing paper, also called book cover paper, is the paper used to print book covers. Writing paper is made of pigments, such as gray, blue and beige. ?
Weight: 80, 100, 120 (g/m2)?
Flat paper specifications: 690× 690,787×1092?
7. embossed paper?
Embossed paper is specially produced and used for cover decoration. There is an inconspicuous pattern on the surface of the paper. Colors are gray, green, beige and pink, which are generally used for printing monochrome covers. Embossed paper knees, the spine is easy to break when binding. When printing, the paper is bent and it is difficult to feed paper, which affects the printing efficiency. ?
Weight: 120-40g/m2?
Flat paper specification: 787× 1092?
Another way of classification:?
Super double-sided coated paper?
Compared with general coated paper, the paper has higher gloss, better smoothness, white and meticulous paper, bright printing color, excellent gradation and contrast, and is suitable for advanced color printed matter. Suitable for advanced books, catalogs, calendars, posters and covers. ?
Snowflake coated paper?
Both sides are treated with special powder, the paper is soft and elegant, with matte effect, refreshing and comfortable vision, no reflection, high opacity, good printing color saturation and vividness, and excellent texture. Suitable for ancient paintings, picture albums, calendars, magazines, books, special issues, catalogues, posters and other purposes. ?
Double coated paper?
Both sides of the paper are smooth and white, with good gloss and high opacity. After color printing, the pattern effect is bright and the color level is good, which is suitable for color printing. Suitable for general books, catalogs, calendars, posters, covers and other purposes. ?
Single coated paper?
Paper coating and gluing are carried out at the same time, so the paper is bright, smooth and even in ink absorption, which is suitable for single-sided color printing and can be glued on the back. Suitable for labels, posters, pasting and release paper. ?
Super ivory Dorian?
Paper color is ivory, soft and effective, non-reflective, non-dazzling, high opacity, smooth paper, suitable for reading. ?
Marking papers?
Paper is soft in color, smooth and meticulous, non-reflective and non-dazzling, suitable for advanced books and picture albums. ?
What about white?
Paper is white in color, good in thickness, neutral in sizing production, and can be preserved for a hundred years without discoloration. Suitable for books, books, product manuals, envelopes, notebooks, calendars, etc. ?
All-wood forest paper
Pulp is mainly long fiber, and the paper has strong tear resistance, excellent stiffness and high smoothness, so it is the best grade paper for forest paper. Suitable for magazine inserts (transfer sheets), books, product manuals, postcards, envelopes and desk calendars. ?
Magazine paper (high white magazine)?
This kind of paper is light, shiny and white. Therefore, compared with the general yellow paper color, it can show the contrast and bright color of printing, and it is the best thin-pound high-grade paper in China. Suitable for magazines, DM, books and periodicals, weekly magazines, color brochures and mail-order color promotional materials. ?
Snow white forest paper?
After micro-coating, the paper is as white as snow, smooth and meticulous, non-reflective and non-dazzling, suitable for advanced books and picture albums. ?
Super Tupperware?
The whiteness of the paper is high, the paper is smooth and meticulous, and the printed products are in sharp contrast.
As an important and traditional information carrier, the production of paper has been enduring for a long time, and the relationship with printing technology is getting closer and closer. With the development of economy and the progress of technology, new requirements are constantly put forward for the variety, quality and performance of paper. In 1980s, printing and paper industry in China completed the transformation from relief printing to offset printing, and from relief printing paper production to offset printing paper production. At present, in the printing of printed matter in China, relief printing is rare, and relief printing is almost completely replaced by offset printing. Although China Paper still regards relief printing paper as the key product of industry statistics, what it actually produces is offset printing book paper instead of relief printing paper in the past.
There is no end to the road of development. Modern offset printing requires printing paper to have a smoother surface, better printing performance, and be able to withstand greater temperature and humidity changes without curling. The varieties of printing paper have been extended all over the world, and a series of new varieties of mechanical wood pulp printing paper have been developed. In recent years, the development of digital printing technology, office automation and personal computer has put forward newer and higher requirements for paper. A series of new varieties such as laser printing paper and ink-jet printing paper have been developed in the field of chemical wood pulp printing paper.
Now, consumers' requirements for printed matter have increased. People not only want to get the knowledge and information they need, but also want to enjoy beauty and leisure by reading and browsing printed matter. Therefore, paper varieties must be constantly innovated.
2 1 century is the era of knowledge economy. The core of knowledge economy is innovation, which can also be called "innovation economy". Innovation is also the soul and life of enterprises. Some farsighted paper-making enterprises have issued such a voice: "Go beyond themselves, develop products, meet market demand, and consciously implement the development strategy of combining paper-making industry with printing industry", which should arouse people's attention, attention and implementation in the whole paper-making industry.
For a long time, the production and consumption of paper will continue to develop steadily on the whole. But the varieties of paper will change greatly, some old varieties will be eliminated and some new varieties will appear. New information technology will promote new paper varieties. At the same time, the paper industry will also face new challenges brought by the thinking mode that consumers want less money and do more good deeds.