Double force film blowing machine manufacturer Shantou Shuangli Machinery tells you the process flow of film blowing
Shantou Shuangli Machinery Co., Ltd., a high-quality manufacturer of Shuangli Film Blowing Machine, has continuously introduced advanced domestic technology. Next, Shuangli Machinery tells you the process flow of blown film, please see below.
Most thermoplastics can be blown to produce blown film. Blown film is a cylindrical film product obtained by extruding plastic into a thin tube, then blowing the plastic with compressed air while it is hot, and then cooling and shaping it. The performance of this film is between the oriented film and the cast film: the strength is better than the cast film, and the heat sealability is worse than that of the cast film. There are many types of films produced by blow molding, such as low-density polyethylene (LDPE), polypropylene (PP), high-density polyethylene (HDPE), nylon (PA), ethylene-vinyl acetate copolymer (EVA), etc., here We briefly introduce the blow molding production process of commonly used low-density polyethylene (LDPE) film and its common faults. Therefore, resin materials with a small melt index (MI) and a relatively wide molecular weight distribution should be selected, which can not only meet the performance requirements of the film, but also ensure the processing characteristics of the resin. The blown polyethylene film generally uses polyethylene raw materials with a melt index (MI) in the range of 2-6g/10min.
Shantou Shuangli Machinery Co., Ltd. will always serve every new and old customer with the best quality products. Welcome your patronage and look forward to cooperating with you!
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