Discussion on Classification of Cast Polypropylene Films in China Plastics Network

Cast polypropylene film can be divided into general CPP (General CPP, GCPP for short) film, aluminum plated CPP (Metalize CPP, referred to as MCPP) film and cooking grade CPP (Retort CPP, referred to as RCPP) film, excellent transparency, uniform thickness And the performance in the vertical and horizontal directions is uniform, generally used as the inner layer material of the composite film. The thickness of ordinary CPP film is generally between 25 and 50 μm. After compounding with OPP, the transparency is good, the surface is bright, and the hand feel is firm. The general gift packaging bag uses this material. This film also has good heat sealability. The thickness of the cooking grade CPP film is generally between 60 and 80 μ m. It can withstand high temperature cooking at 121 ° C for 30 min. It has good oil resistance and air tightness, and the heat sealing strength is high. The inner layer of the general meat packaging is uniform. A cooking grade CPP film is used.