The process of injection blow molding is used for the production of hollow glass and plastic objects in large quantities. In the injection blow molding process, the polymer is injection molded onto a core pin; then the core pin is rotated to a blow molding station to be inflated and cooled.
This is the least-used of the three blow molding processes, and is typically used to make small medical and single serve bottles. The process is divided into three steps: injection, blowing and ejection.
In this method, the material is HDPE, LDPE, PP, PVC, PS, ABC, Nylon etc.