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A coating processing paper used for copperplate printing. According to different purposes, it can be divided into single-sided or double-sided coating. There are flat paper and roll paper. The quantification is generally 70-150g/m2, and there are also double-sided coatings up to 180-250g/m2. The paper is uniform and compact, with a high whiteness (over 85%), a smooth and glossy surface, and a firm and consistent coating, making it easy to obtain exquisite and clear patterns and text after printing< Copperplate paper is made by using bleached chemical wood pulp or partially bleached chemical grass pulp on a paper machine. Using raw paper as the paper base, white pigments (also known as clay, such as kaolin, talc powder, calcium carbonate, titanium dioxide, etc.), adhesives (polyvinyl alcohol, casein, modified starch, synthetic latex, etc.), as well as other auxiliary materials (such as glossy agents, hardeners, plasticizers, dispersants, wetting agents, milky whitening agents, fluorescent whitening agents, coloring agents, etc.) are uniformly coated and processed on a coating machine, and dried and super pressed to produce. Used for advanced art printing, calendars, posters, brochures, color illustrations, book and magazine covers, and advertising trademarks.

The characteristics of copperplate paper are that the paper surface is very smooth and flat, with high smoothness and good glossiness. Because the whiteness of the coating used is over 90%, and the particles are extremely fine, and it is also polished by a super calender, the smoothness of copperplate paper is generally 600-1000 seconds. At the same time, the paint is evenly distributed on the paper surface, showing a pleasing white color. The requirement for copperplate paper is to have a high coating strength, with a thin and uniform coating without bubbles. The amount of adhesive in the coating is appropriate to prevent the paper from shedding powder and hair during the printing process. In addition, the absorption of xylene by copperplate paper should be appropriate, suitable for fine screen printing of 60 lines/cm or more.

The beautiful calendars that everyone sees, posters sold in bookstores, book covers, illustrations, art books, picture albums, and so on.