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The history of the blow molding machine

  • Source:Dong Duan Tai Fu Machinery Co., LTD. Update time:2016-08-13
  • Also known as hollow blow molding, blow molding, blow moulding) a rapid development of plastic processing methods. Thermoplastic resin by extrusion or injection molding of plastic parison tube, hot (or heated to softening state), put in split cavity, mold closing imtely after ventilation with compressed air within the parison, make plastic parison swell and clingy wall in the mold, the cooling mold release, the products have all kinds of hollow. Blown film manufacturing technology on the principle and hollow blow molding is very similar, but it does not use the mould, from the perspective of classification of plastics processing technology, molding process is usually included in the extrusion of blown film. Blow molding process during the second world war, start small bottles used in the production of low density polyethylene. The birth of the late 50 s, with the high density polyethylene and the development of the blow molding machine, blow molding technology has been widely applied. The volume of the hollow container can amount to thousands of liters, some production has adopted computer control. Suitable for blow molding of plastics such as polyethylene, PVC, and polypropylene, polyester, the income of empty container is widely used in industrial packaging container.
    According to the parison producing method, blow molding, blow molding can be divided into the extrusion blow molding and injection of new developed a multi-layer blow molding and stretch blow molding.

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