News #extrusion blow molding machine

The head of a large-scale China extrusion blow molding machine for raw materials (plastics) separates the two functions of the storage head of the extrusion blow molding machine for hollow raw materials (plastics) and the injection extrusion embryo, which are accomplished by the injection molding mechanism. Thus, the head has the advantage of the continuous head being easy to change colors and materials.

Blow moulding, also known as blow molding, is a rapidly evolving plastic processing method. The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is heated (or heated to a softened state) and placed in a split mold. Immediately after closing the mold, compressed air is introduced into the parison to blow the plastic parison. It is inflated and adhered to the inner wall of the mold, and is cooled and demolded to obtain various hollow products. The manufacturing process of the blown film is very similar in principle to the blow molding of hollow products, but it does not use a mold. From the perspective of classification of plastic processing technology, the molding process of the blown film is usually included in the extrusion. The blow molding process began to produce low density polyethylene vials during the Second World War.