Carbonless copy paper front "color layer" (Reactive Layer), non-carbon paper, or called the active layer. Color layer of the active ingredient is a color agent. Common reagent can be divided into three categories: clay type (ingredients such as), there are models (such as phenolic resin), aromatic carboxylic acid metal salt (such as zinc salicylate). The reagent is used as a proton donor. PH (PH value) indicators. Usually pH 6.7 or less acidic paper, carbonless paper, Dongguan, 7.2 ± 0.5 for the neutral paper. Acid paper is generally used for writing and general printing. High acidity adversely affects the machine, so the general requirements for neutral paper copy. Grass is typically acidic paper pulp and paper, bamboo, wood pulp paper is generally neutral paper. Carbonless paper _ _ Foshan Jinzhou Paper carbonless paper provided by the Xinxiang City Jinzhou New Materials Co., Ltd .. Carbonless paper _ _ Foshan Jinzhou Paper carbonless paper Xinxiang City, New Materials Co., Ltd. Jinzhou (www.hnjinzhou.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Wang Qiang.