Blow molding, also known as hollow blow molding, a rapid development of plastic processing methods.

The blow molding process during the Second World War began for the production of low density polyethylene bottles. In the late 50's, with the development of high density polyethylene and blow molding machine, blow molding technology has been widely used. The volume of the hollow container is up to several thousand liters, and some of the production has been controlled by computer.

Suitable for blow molding plastic with polyethylene, polyvinyl chloride, polypropylene, polyester, etc., the resulting hollow containers are widely used as industrial packaging containers. According to the production method of the blank, the blow can be divided into extrusion blow molding and injection blow molding, the newly developed multi-layer blow molding and stretch blow molding.