WCR from 1954 by the American company will first push people NCR carbonless paper market, the single, after its extensive development in the world, a world without carbon paper developed rapidly in the 1970s and 1980s, the late 1990s, growth has slowed down, world production in 2001 reached 3,000,000 tons. Our carbonless paper started in the 1970s, 1990s developed rapidly. With the expansion of the production capacity of carbonless copy paper, China's Carbonless paper also carried out research and development, there are many factories formal production, and a neutral sizing of paper, the physical indicators and imported paper similar The coating adaptability, white and so is ideal. So far our annual output NCR has accounted for a large share of the physical performance indicators in the world production of quantitative ①: weight per square meter, in g / m, said. As quantitative cultures printing paper is generally 32 ~ 80g / m, quantitative cardboard is generally 200 ~ 400g / m. ② Thickness: between two non-carbon paper plates measuring the single supplier, applying non-carbon paper under the single quote 100kPa pressure, direct measurement of the thickness, in mm. ③ tightness: indicates the degree of tightness of the sheet structure, the weight per cubic centimeter of the paper in g / c represents?. The same quantity of paper, a large paper thickness is loose. ④ porosity and permeability: Fair paper contains 70% porosity. The air permeability of the paper based on a certain area at a certain degree of vacuum, the amount of air per minute through the air or through a certain amount of time, respectively, ml / min or s / 100ml expressed. ⑤ expansion rate: or at different temperatures after water immersion without the sheet post-humidification or dehumidification single carbon paper supply, paper size changes relative to the size of the increase or decrease of the percentage of the original sample sizes represented. Offset paper for expansion rate higher. ⑥ strength: Paper by external force to achieve some specific values ??reflected in the failure point. There are tensile strength and elongation at break, bursting strength, folding, tearing and stiffness. The strength of the index is particularly important for wrapping paper. ⑦ ignition point: usually 130 ~ 255.5 ℃. The single brand of carbonless paper carbonless paper Yulin _ _ the single Jinzhou Jinzhou Paper provided by New Materials Co., Xinxiang. Xinxiang City, Jinzhou New Materials Co. (www.hnjinzhou.com) strong, credible, in Xinxiang 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 Jinzhou Paper and you hand into the brilliant, for a better future!