Suzhou blow molding process includes three basic steps: preform molding, blow molding and product cooling. First, the plastic is processed into a preform (injection molding or extrusion), and then the high-temperature preform is placed in the blow mold, and compressed air is injected into the preform to blow it up until it is close to the cavity wall. The blowing pressure is maintained until the plastic part is cooled and shaped, and the mold is opened to obtain a hollow plastic part.
What is the specific production process of Suzhou blow molding plastic products?
Classification and characteristics of Suzhou blow molding process:

Depending on the different preform preparation and blowing methods, there are many types of blow molding processes, such as extrusion-blowing, injection-blowing, extrusion-stretch-blowing, and injection-stretch-blowing.
1. Extrusion blow molding process - extrusion blow
2. Extrusion stretch blow molding process - extrusion stretch blow
Plastic is made into a tubular preform by an extruder and a preform head, and the hot tube preform is intercepted by a pre-blowing mold

and pre-blown, and the pre-blown high-temperature preform is moved to the blow molding mold for stretch blow molding