1、 It can be divided into:
1. Packaging paper
2. Printing paper
3. Industrial paper
4. Office and cultural paper
5. Household paper
6. Specialty paper.
[Packaging paper]
Whiteboard, white cardboard, kraft linerboard, kraft paper, corrugated paper, box board, tea board, sheepskin, chicken paper, cigarette paper, silicone paper, paper cup (bag) base paper, coated paper, glass paper, oil proof, moisture proof paper, transparent paper, aluminum foil paper, trademark, label paper, fruit bag paper, black cardboard, color card paper, double gray paper, gray board paper;
Including:
Grey paperboard
1. Paper with a fixed weight of 250-400g and an area of more than/square meter is called paperboard or cardboard. It is often used as a paper packaging box. Because the back is gray, it is commonly known as gray cardboard
2. The paperboard is all lithographic paper. The paperboard used for book printing is mainly used to make the press paperboard for the cover of hardcover book shell and the press paperboard for the cover of hardcover books and picture books.
3. The thickness of cover pressboard is generally divided into 1mm, 1.5mm and 2mm.
White linerboard
Compared with grey cardboard, the back is white, but the paper core on the side is usually 250-400g
[Printing Paper]
Coated paper, newsprint, light coated paper, light paper, double gummed paper, writing paper, dictionary paper, book paper, Daolin paper, beige Daolin paper, ivory white Daolin paper;
Including:
Daolin paper
1. The correct name should be "offset paper" or "offset paper"
2. Material: Paper made of wood pulp, which is coated on both sides of paper to improve its surface physical properties. For the preparation of bleached chemical wood pulp, bamboo pulp, rag pulp and straw pulp, it is also necessary to properly add more filler and glue pulp, make the pulp on the fourdrinier paper machine, and then make it by calendering. Acidity and alkalinity should also be close to neutral or weakly alkaline, and the quantitative value is 60-180 g.
3. Usage: Paper specially used for offset printing, also suitable for letterpress printing. It is a relatively advanced book printing paper, which has high requirements on the ratio, expansion rate and surface strength during printing. It is suitable for printing monochrome or multi-color book covers, text, inserts, pictorials, maps, posters, color trademarks and various packaging materials
4. Reclassification:
a) Double sided offset paper: 70-120g is the most widely used. There are three types of special size, one size and two size. Special size and one size double sided offset paper are used for printing advanced color offset printing products, mainly for printing books, magazines, pictorials, art pictures, book covers, etc. with good decoration;; No. 2 double-sided offset paper is used for printing general color prints;
b) Single sided offset paper: there are three kinds: special size, one size and two size. No. 1 and No. 2 are mainly used for printing posters, New Year pictures, pictures, etc.
Double adhesive tape:
1. Material:
a) The selected pulp and raw materials are generally good, which can be preserved for a long time, have good printability, and can also be used for further processing to produce more valuable paper products.
b) The conventional preparation process is to coat the adhesive on both sides of the base paper in the papermaking process to improve its surface physical properties and scalability.
2. Purpose:
a) It is mainly used for flat (offset) printing machine or other printing machines to print higher level monochrome or color printing materials.
b) All kinds of books and textbooks are the first choice, followed by books, magazines, color pages, product catalogs, maps, calendars, covers, inserts, inserts, business cards, posters, product manuals and other printing, advanced books/notebooks/notebooks, envelopes, office/official papers, color trademarks and various packaging products.
Writing paper
1. Double gummed paper less than 60g is also called writing paper, which is applicable to forms, exercise books, account books, record books, etc. It is mainly used for ink writing and monochrome printing; Light weight (18-80gsm) and low price.
2. Writing paper of notepad: Jinhuasheng ivory white paper, rice yellow road forest paper, acid free paper, etc. The conventional ones are 80g and 100g.
c) Sun paper and white cloud paper are ivory white paper. The writing effect is very good, which is the choice of most books.
d) The yellow writing paper for eye protection is the Mizodiac Forest paper.
e) Acid free paper is not commonly used and is expensive. Remember us
Light paper
1. The use of recycled fiber has high environmental protection performance, soft hue and whiteness, and high opacity.
2. It is applicable to instructions, office paper, writing paper, books and periodicals.
newsprint
1. Also known as white newspaper, the packaging form can also be divided into reel and paperback.
2. The newsprint quantity is about 51g, mainly used for printing newspapers and periodicals.
Coated paper
1. The paper core is molded paper, also known as powdered paper. It is made by adding a layer of paint on its surface and super calendering to fill the fiber gap on the paper surface
2. The paper surface is slippery, coated and glossy, and the printing effect is good. It is usually used to print color prints such as fashion magazines.
3. Coated paper is not resistant to folding, and it is very difficult to recover once there are creases.
4. Common 105-300g, the quantity of coated paper is 90-250g;
5. It can be divided into double-sided coated paper and single-sided coated paper. There are three product numbers: special number, one number and two number. Special coated paper is used for printing delicate products with more than 150g screen wire; No. 1 coated paper is used for printing products with 120-150 screen cables; No. 2 coated paper can be used to print products with less than 120g screen wire.
6. Among them, matt art paper is coated on the surface of the coated paper to make it non reflective.
Matt paper
Compared with coated paper, both sides do not reflect light. The common 105-300g albums are basically coated paper and matte paper.
Dictionary paper
It is divided into No. 1 and No. 2, with the quantitative of 25-50g. It is mainly used for printing dictionaries and manuals.
Dictionary paper is highly hygroscopic and will wrinkle when slightly affected with moisture.
Semi woodfree paper
Imitating Daolin paper, whose pulp is used paper, rags, etc.
Bible paper
The thin paper made of wood fiber pulp is commonly used to print the Bible, so it is called Bible paper in China.
[Industrial Paper]
(It mainly refers to the special paper for writing and packaging): release paper, carbon paper, insulating paper, filter paper, test paper, capacitor paper, pressure plate paper, dust-free paper, impregnated paper, sandpaper, rust proof paper;
[Office and cultural paper]
Tracing, drawing paper, copy paper, art paper, carbon paper, fax paper, printing paper, copy paper, photo paper, rice paper, thermal paper, color ink-jet paper, film paper, sulfuric acid paper;
among
Copy paper:
1. Copy is a transliteration of English copy, which means carbon copy.
2. Copy paper is mainly used for printing multiple sheets, suitable for copying and typing.
3. It is semi transparent. It is mainly used to bind the cover with portrait pages in book printing.
[Household Paper]
Toilet paper, facial tissue paper, napkin paper, diapers, sanitary napkins, wet tissue paper;
Special Paper
1. Paper is good, expensive, and there are many kinds
2. Special papers, such as butter paper, steel antique paper, decorative base paper, water grain paper, leather grain paper, gold and silver cardboard, pattern paper, anti-counterfeiting paper.
3. Processed paper, such as pearlescent paper and pearl paper;
[Craft paper] For example, Dongba paper made of flowers in Yunnan.
1. II. It can be divided into manual paper and machine made paper according to the production mode.
Handmade paper
a) Mainly by manual operation, it is made by manually salvaging curtain mesh frame one by one. Soft texture, strong water absorption, suitable for ink writing, painting and printing, such as Chinese rice paper.
b) Its output accounts for a small proportion in the total output of modern paper.
2. Machine made paper refers to the general term of the paper produced by mechanization, such as printing paper, packaging paper, etc.
Other concepts
1. Recycled Paper
a) Recycled paper can be used as raw material to make recycled pulp, and the paper produced by replacing log pulp with recycled paper can be called recycled paper.
b) It does not add any whitening agent, fluorescent agent and other chemical agents. The color of recycled paper is yellowish and it does not reflect light. In fact, it is more conducive to protecting our eyes,
c) The United States Environmental Protection Agency (EPA) stipulates that only those with a secondary fiber content of no less than 50 percent can be called recycled paper. There is no national standard in China.
d) Industrial use refers to the waste kraft paper box as the main production raw material. Generally, the gray bottom layer of paperboard uses mixed waste paper as the main production raw material. These products can be called industrial recycled paper.
e) Generally, the cultural paper used for writing and printing is made from bleached chemical log pulp, which can also be made from waste paper. The cultural paper produced is called recycled paper.
2. Acid free paper
a) Paper free of active acids. The weight and color of the paper depend on its use. Paper is solid, high strength and nearly neutral. It is made from plant fiber pulp after special treatment (elimination of organic acid) and papermaking machine.
b) It is used for packaging certain articles or manufacturing certain equipment to protect materials in contact with paper from acid corrosion
c) The PH value of paper is 7.0 (neutral) or higher (alkaline). The acid content of paper is the best indicator of its service life. Under normal use and storage conditions, the service life of acid free paper can reach about 200 years
d) Newspapers are made of acid paper. They can be stored carefully for about 20 years. They can only be stored for a few weeks when exposed to sunlight and air.
