1. Printing paper - among printing papers, there are papers with different properties and characteristics, such as newsprint, letterpress printing paper, offset printing paper, offset printing coated paper, dictionary paper , map paper, nautical chart paper, gravure printing paper, weekly newspaper, picture newspaper, white board paper, writing paper, etc.
2. Newsprint - mainly used for printing newspapers and letterpress books and periodicals. Its paper is soft, has good elastic plasticity, and has strong ink absorption performance. The ink can be fixed on the paper surface quickly. The surfaces are pressed successively by a calender. Both sides are smooth and not easy to fluff. The printing on both sides is relatively clear and solid.
It has certain mechanical strength, can be suitable for high-speed web printing, and has good opacity. Since the raw materials used are mainly mechanical wood pulp, which contains essential elements and impurities, the paper should not be stored for a long time. The paper will easily turn yellow and become brittle. The paper is highly absorbent and has poor water resistance, and the paper is easily damaged.
3. Printing paper - mainly used for letterpress printing presses to print anthologies, classics, general books, textbooks, magazines, etc. Its characteristics are similar to newsprint, and its quality is worse than newsprint. The paper's smoothness, water resistance, and whiteness are worse than newsprint. Its ink absorption capacity is not as good as newsprint, but it absorbs ink evenly.
4. Offset printing paper - mainly used for offset printing of color pictorials, albums, posters, color trademarks and some high-end publications.
5. Offset paper can be divided into single-sided offset paper and double-sided offset paper. Single-sided offset paper is often used in color posters, cigarette boxes, trademarks, etc. Double-sided offset paper is used for printing pictures, illustrations, maps, etc.
6. Offset printing coated paper - also called coated paper. It is made by applying a layer of inorganic coating on the surface of the coating base paper and then super-calendering. The paper surface is smooth and the whiteness is high. It is specially used for offset printing of single-color or multi-color art pictures, illustrations, and pictorials. , albums, product trademarks, product samples, calendars, etc.