Opening agent is a kind of additive used in plastic film packaging and other fields, the main function is to prevent the surface of the material in the processing, storage and use of the process because of adhesion and difficult to separate, it reduces the friction coefficient of the surface of the material or form a bulge, reduce the direct contact between the material layers, so as to avoid the adhesion problem, the product has easy to use, uniform dispersion, The advantages of good processing performance are often used in PP and PE plastic packaging