Double copper paper, also known as coated printing paper, is called art paper in Hong Kong and other regions. It is a premium printing paper made by coating the base paper with white paint. Mainly used for printing high-end book and magazine covers, illustrations, color images, various exquisite product advertisements, samples, product packaging, trademarks, etc.
Double copper paperIt is a flat paper with dimensions of 787 x 1092mm, 880 x 1230mm, and a quantitative range of 70-250g/m2. Coated paper can be divided into single-sided coated paper, double-sided coated paper, matte coated paper, and coated paper. According to quality, it can be divided into A, B, C, etc. The main raw materials for double copper paper are copperplate base paper and coating. The requirements for copper plate base paper are uniform thickness, low flexibility, high strength, and good water resistance. The surface of the paper is free of defects such as spots, wrinkles, and holes. The coating used for coating is composed of high-quality white pigments (such as kaolin, barium sulfate, etc.) Adhesives (such as polyvinyl alcohol, casein, etc.) and auxiliary additives. This high fluidity and high solid content coating is evenly applied thinly on the original paper through a coating machine, then dried, rolled into a roll shape on a roller, and then sent to a super calender for calendering and finishing. Finally, it is cut, selected, and packaged.
Paper Knowledge Sharing - Double Copper Paper
The characteristics of double copper paper are that the paper surface is very smooth, 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 pressed with a super calender, the smoothness of the double copper paper is generally between 600 and 1000 seconds. At the same time, the pigment is evenly distributed on the paper, presenting a pleasing white color. The requirements for double copper paper are thin, uniform, and free of bubbles in the coating. The amount of adhesive used in the coating is appropriate to prevent the paper from shedding powder and hair during the printing process. In addition, the absorbance of double copper paper for xylene should be appropriate.
The double copper paper with cloth pattern is pressed with an old blanket, which not only makes the paper flat and white, but also gives the printed graphics and images a three-dimensional sense. Therefore, this pair of copper paper can be widely used for printing posters, advertisements, landscape paintings, exquisite calendars, and portrait photography.
