Biaxially oriented polypropylene film (BOPP) BOPP film is formed by co-extrusion of polypropylene granules after sheet of polyethylene plastic film, and then stretching both vertical and horizontal directions and prepared. Since molecular orientation stretch plastic film coating layer, so the physical stability of such films, mechanical strength, air tightness is preferably polystyrene film, high transparency and gloss, tough wear-resistant plastic film, is applied The most extensive printing film, typically having a thickness of 20 ~ 40 μ m, the most widely used is 20 μ m. Meanwhile, the high energy of the spark impact surface of the film. In their joint action, the plastic film surface activation, the surface energy increases. By corona treated polyolefin film can wet tension to 38 dynes / cm; polyester film can wet the surface tension of 52-56 dyne above / cm. Plastic film surface tension corona treatment wet size and voltage level applied to the electrodes, the factors distance between the electrode and the corona treatment roll about. Xianning coating layer of plastic film plastic film _ _ red plastic factory by red plastic factory Xiongxian. Red Xiongxian plastics plant (tztz89647.ynshangji.com) strong, credible, in Baoding plastic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the red plastic factory and you hand in hand into the brilliant, for a better future!