Thermal paper is also known as thermal fax paper, thermal recording paper, thermal copy paper in Taiwan is called the heat-sensitive copying paper. Thermal paper is a working paper thermal paper size, the manufacturing principle is quality raw paper coated with a layer of "thermal paint" (thermochromic layer). Although this color layers with a dozen chemicals, but at least the following compounds: colorless dye, the dye wide variety, most commonly used is a fluorescent compound; reagent about 20% less thermal paper manufacturers, Commonly used Bisphenol paraoxybenzoate; sensitizer about 10% or less, which contains acid amides; packing about 50% of the production of thermal paper, commonly used calcium carbonate (particle); plastic viscosity - about 10% or less, such as polyvinyl acetate; stabilizers, such as terephthalic acid, diphenyl; lubricant. Therefore, the process is difficult, technically demanding. The principle of thermal paper is placed above 70 ℃ environment, the thermal coating began to change color. But also to talk about the reasons for its color from its ingredients. The heat-sensitive thermal paper coating composition mainly two: one is called colorless dye or leuco dye; the other is a color agent. Such thermal paper is also known as a two-component type thermal recording paper chemical. Used as colorless dye are mainly: crystal violet lactone tritylaminothiazole benzene phthalocyanine system (CVL), fluoran system, colorless benzoyl methylene blue (BLMB) or Spiropyran system and other substances. Thermal paper is what | thermal paper | Paper provided by Xinxiang Kaifeng Kaifeng Paper Limited. Kaifeng, Xinxiang City Paper Co., Ltd. (www.xxkfzy.cn) strong, credible, in Xinxiang of paper and paper processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Kaifeng paper into the brilliant and you work for a better future!