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Machine Classification
- Jan 04, 2018 -

Blow molding machine can be divided into extrusion blow molding machine, injection blow molding machine and special structure blow molding machine three categories. Stretch blow molding machines belong to each of these categories. Extrusion blow molding machine is a combination of extruder and blow molding machine and clamping mechanism, which consists of extruder and preform die, inflation device, clamping mechanism, parison thickness control system and transmission mechanism. Parison die is to determine the quality of blow molded products, one of the important parts, usually side feed die and the central feed die. Large-scale products used in blow molding cylinder type parison die. The smallest cylinder storage capacity of 1kg, up to 240kg. Parison thickness control device used to control parison wall thickness, the control point up to 128 points, usually 20 to 30 points. Extrusion blow molding machine can produce volume range of 2.5ml ~ 104l hollow products.

Injection blow molding machine is a combination of injection molding machine and blow molding machine, including plasticizing mechanism, hydraulic system, control electrical appliances and other mechanical components. Common types are three-station injection blow molding machine and four-station injection blow molding machine. Three-station machine prefabricated parison, inflation and demoulding three stations, each station 120 ° apart. Four-station machine is a pre-forming station, each station separated by 90 °. In addition, there are two-station injection blow molding machines spaced 180 ° apart from one another. Injection blow molding machine plastic containers produced accurate size, without secondary processing, but higher mold costs. Special Structure Blow Molding Machine Blow molding machines for sheet blanks, melts and blank blanks for hollow bodies with special shapes and applications. Due to the different shapes and requirements of the products produced, the structure of the blow molding machine is also different.