What are the common paper classification?

1, letterpress paper: referred to as letterpress paper, product packaging form of rolls and lithographic points. Toppan paper ration of 50 grams per square meter to 80 grams. Grade number is divided into special number, number one, number two three. The special and No. 1 letterpress paper is used for printing high-level books, while the No. 2 letterpress paper is mainly used for printing general books, textbooks and periodicals.

2, newsprint: also known as white paper, packaging forms also have rolls and lithographic points. Newsprint ration of 51 grams or so, mainly for printing newspapers, periodicals.

3, offset printing paper: referred to as offset paper, quantitative 60-180 grams, double-sided offset paper and single-sided offset paper. Among them, double-sided offset paper 70-120 grams of the most widely used. Double-sided offset paper, single-sided grade number have special number, number one, number two three. Special number, a double-sided offset paper for the printing of advanced color offset products; No. 2 double-sided offset paper grams for the printing of general color prints; single-sided offset paper is mainly used for printing posters, posters.

4, coated paper: coated paper is coated with a layer of coating liquid on the original paper, made of super calendering. Quantity of 90-250 grams, double-sided coated with single-sided coated paper. There are three kinds of grades: special grade, No. 1 and No. 2.

5, book cover paper: quantitative 80-120 grams, mainly for books and magazines for cover use. Book cover paper has a variety of colors, in order to adapt to the needs of printing a variety of different covers.

6, dictionary paper: divided into two kinds of No. 1, No. 2, quantitative 25-50 grams, mainly for printing dictionaries, manuals. Dictionary paper is highly hygroscopic and will wrinkle when it is slightly damp.

7, copy paper: copy is the phonetic translation of the English copy, meaning copy. Copy paper is mainly used for printing multiple sheets, suitable for copying and typing. Because the copy paper is translucent, in the booklet printing, mainly used for framing with a picture page of the page protector to use.

8, board: quantitative 250 g / square meter above the paper called board, or cardboard. There are many types of board, booklet printing used by the board, mainly for the production of hardcover book shell side of the cover press cardboard, and the production of hardcover books, album covers with the jacket press cardboard. The boards are all lithographic paper.

Expanded Information

In the selection of paper varieties, the main need to be based on the characteristics of the printed matter to be printed and the type of printing press used to select.

1, printing books and magazines in the color cover, illustrations or advertising inserts, etc., can choose double-sided coated paper or double-gum paper.

2, the printing of trademarks and other single-sided prints can be used for single-sided coated paper or single offset paper.

3, printing dictionaries, dictionaries, manuals and other tools such as dictionary paper or thin letterpress paper.

4, the printing of general books can choose offset booklet paper or letterpress paper.

5, the same is the printing of books in general, if you want to use in the rotary printing machine need to choose the web (except for the platform rotary printing machine), if you plan to print on the general platform need to choose the flatbed paper; if the offset printing machine should be printed on offset printing booklet paper, if the letterpress printing press on the printing of letterpress paper can be selected.

There are many types of printed matter, according to the specific characteristics of the various printed matter to choose the varieties of paper used. On the choice of paper specifications, involves the booklet paper open, so it is necessary to general booklet paper open with the common openings are introduced.

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