Overview of the blow molding machine

Blow molding is a molding method in which a resin called a parison, which is a pipe made of a molten thermoplastic resin, is blown out and blown out to take out after cooling.Conventionally, it was used to manufacture bottle containers for eye drops, medicines, cosmetics, foods, detergents, etc. Recently, its features such as cost performance, high rigidity and light weight have been evaluated, and various types of products, mainly automobile parts, have been evaluated. Application fields are also expanding to industrial parts.

Flows in Blow Molding

Heat melting of thermoplastic resin

Molding of parison

Expansion in a closed mold by compressed gas

Cooling

Removal of molded product

Main Component I: Exturder

In order to obtain a good-quality molded product, a good parison must first be formed. The most important factor affecting this is the extruder.
The main components are a cylinder, screw, hopper, speed reducer, drive motor, and heating / cooling section.