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Basic knowledge of blow molding machine science
- Feb 06, 2018 -

Blow molding is also known as blow molding, a rapidly developing method of plastic processing. Thermoplastic resin extruded or injection-molded tubular plastic parison, hot (or heated to a softened state), placed in the mold, the mold closed immediately after the introduction of compressed air in the parison, the plastic parison blow Expansion and close to the mold wall, after cooling demoulding, that is, a variety of hollow products. Blown film manufacturing process in principle and the hollow product is very similar to the blow, but it does not use the mold, plastic processing technology from the classification point of view, the blown film molding process is usually included in the extrusion. During the World War II blow molding process began to be used to produce low-density polyethylene vials. The late 50's, with the birth of high-density polyethylene and the development of blow molding machines, blow molding technology has been widely used. Hollow container volume up to thousands of liters, and some production has been using computer control. Suitable for blow molding of plastic polyethylene, polyvinyl chloride, polypropylene, polyester, the resulting hollow containers are widely used as industrial packaging containers.