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How is PE protective film blown out?
2023-08-23
PE protective film is a common plastic product in our daily life, which is produced by rolling process, extrusion process, blow molding process and other methods. The method of film blow molding is to melt and extrude the plastic material into a thin tube through an extruder, then inflate it with compressed air while it is hot, and cool it to form a thin film product. The primary materials used for blow molded films include LDPE, HDPE, LLDPE, EVA, PVC, PP, PS, PA, etc. The material used in the molding process of polyethylene blown film is extruded through plasticization to form a tubular shape, which is then inflated, cooled, pulled, and coiled. In the process of blow molding film, there are three methods based on the different extrusion and traction directions: flat blowing, upward blowing, and downward blowing. These are commonly used molding processes and there are also special blow molding methods
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