1) Melt plasticizing using extruder or injection molding machine to melt raw materials;

2) Type billet molding using extruder head and mouth die or injection mold forming type billet;

3) Blow molding uses an auxiliary air compressor to provide compressed air and a hydraulic clamping device to clamp the molding products. [1]

The blow molding process is to send the hot billet or billet into the blow molding mold, clamp the billet while the mold is closed, and then blow the hot tube billet to the cold mold wall, cool and finalize the product.