Analysis: Introduction to the performance of commonly used paper
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Newsprint: Newsprint is mainly used for the printing of newspapers and some letterpress books. The paper is soft, elastoplastic, with strong ink absorption, certain mechanical strength, and can be applied to various high-speed rotary printing. This kind of paper is mostly made of wood pulp, which contains more lignin and impurities. The paper is easy to yellow and brittle, and the water resistance is very poor, so it is not suitable for long-term preservation.
Letterpress printing paper: This is a special paper used for letterpress printing. The nature of paper is similar to that of newsprint. The water resistance, color purity, smoothness of paper surface is slightly better than that of newsprint, ink absorption is more uniform, but strong ink ability is better than newsprint. To be bad.
Offset printing paper: Offset printing paper is a type of paper used for offset printing (lithographic printing). It is also divided into single-sided offset paper and offset offset paper. Single-sided offset paper is mainly used for printing promotional sheets, packaging boxes, etc. Double-sided offset paper is mainly used for printing pictures, pictures and so on. Offset paper is compact in texture, small in stretchability, and strong in water resistance. It can effectively prevent paper deformation, misalignment, napping, and powder removal during multi-color overprinting. Can maintain a good color purity of the print.
Offset coated paper: also known as coated paper, is a kind of high-grade paper coated with a layer of inorganic coating on the paper and supercalendered. The surface of the paper is smooth and smooth, and the color purity is high. The meticulous and clean outlets can better reproduce the layering of the original, and are widely used in art pictures, albums, commercial leaflets, etc.
Gravure printing paper: Gravure printing paper is white and firm, has good smoothness and water resistance, and is mainly used for printing printed matter such as banknotes and stamps with high quality and not easy to copy.
Whiteboard paper: Whiteboard paper is a kind of paper which has a relatively uniform fiber structure, a filler layer and a rubber component on the surface layer, and a surface coating with a coating. It is made by multi-roll calendering. The color quality of the paper surface is relatively high and uniform. The ink absorption property has a good folding resistance, and is mainly used for a product packaging box, a product watch lining, a picture wall chart and the like.
Synthetic paper: Synthetic paper is made by using chemical raw materials such as olefins and adding some additives. It has soft texture, strong tensile strength, high water resistance, light and cold resistance, corrosion resistance against chemical substances and no environmental pollution. It has good air permeability and is widely used in the printing of high-end art, maps, albums, high-end books and magazines.