The general principle of blow molding

The general principle of blow molding can be summarized as the blowing of compressed air into a molten parison, which is laterally inflated, pressed against the sub-mold type control surface, and cooled to form a hollow product. Therefore, blow molding generally refers to a molding method of a hollow container.
Extrusion blow molding process:
  There are many types of blow molding methods and blow molding machines. There is no uniform classification method. There are several classification methods commonly used: 1 according to the production method of the parison, there are extrusion blow molding, injection blow molding, Two-stage blow molding. 2 According to the blowing method: there are upper blowing, lower blowing, horizontal blowing and so on. 3 According to the direction of movement of the parison after clamping the parison: vertical lifting, horizontal movement, oblique lifting, no movement, rotary movement, etc.
Extrusion blow molding machine head and auxiliary machine
Extrusion blow molding auxiliary machines include molds, mold holders, gas nozzles, mold clamping devices, circuits, oil circuits, pneumatic systems, and the like. Only the holes, storage cylinders, molds and clamping devices are highlighted here.

  • 14/03/2019
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