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Injection Blow Moulding Machine
- Mar 14, 2018 -

Blow molding machine is also called hollow blow molding, a rapid development of plastic processing methods. Tubular plastic billets obtained by extrusion or injection of thermoplastic resins, hot (or heating to soften the state), placed in the open mold, immediately after the closed mold in the form of compressed air, so that the plastic billet blowing and close to the mold wall, after cooling demoulding, that is, a variety of hollow products. Blow molding Film manufacturing process in principle and blow molding hollow products very similar, but it does not use molds, from the plastic processing technology classification of the angle, blow molding film molding process is usually included in extrusion. Blow molding Process In the Second World War, began to produce low-density polyethylene vials. In the late 50, with the birth of high-density polyethylene and blow molding machine development, blow molding technology has been widely used. The volume of hollow containers can reach thousands of liters, and some production has been controlled by computer. Applicable to blow molding machine plastics have polyethylene, polyvinyl chloride, polypropylene, polyester, etc., the resulting empty containers widely used as industrial packaging containers.

According to the production method of Parison, blow molding can be divided into extrusion blow molding and injection blow molding, the new development of multi-layer blow molding and stretch blow molding.

The injection blow moulding machine is a combination of injection moulding machine and blow moulding mechanism, including plasticizing mechanism, hydraulic system, control apparatus and other mechanical parts. The common types are three-position injection blow moulding machine and four-station injection blow moulding machine. Three-station machine has prefabricated billet, blowing and stripping three positions, 120 ° per station. Four station machine is more than one pre-forming station, 90 ° per station. In addition, there are 180 degrees between the work station of the two-station injection blow molding machine. The plastic container produced by injection blow moulding machine is precise in size, no more than two times, but the cost of mould is higher.


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