2021-08-18 Blow molding can be divided into two blow molding methods, hollow and film. Hollow blow molding can also be divided into extrusion blowing, injection blowing, extrusion stretch blowing, injection stretch blowing and other molding methods. Today, I will briefly introduce the key points of extrusion blow molding design. The extrusion blow mold is mainly composed of two half molds, which are generally composed of a mold body, a mold cavity, a clamping blank, a guide post, etc. The main requirements for the mold structure design are as follows,