Plastic molding processing is an engineering technology, which involves various processes to convert plastics into plastic products, so there are three common plastic processes: extrusion, injection molding, and blow molding.
1. Injection molding
the principle is to add granular or powdery raw materials into the hopper of the injection machine, and the raw materials are heated and melted into a flowing state. Under the push of the screw or piston of the injection machine, they enter the mold through the nozzle and the pouring system of the mold cavity, hardened and shaped in the mold cavity. Factors affecting the quality of injection molding: injection pressure, injection time, injection temperature.
2. Extrusion molding
Extrusion molding, also known as extrusion molding, is mainly suitable for the molding of thermoplastics, and is also suitable for the molding of some thermosetting and reinforced plastics with good fluidity. The molding process is to use the rotating screw to extrude the heated and melted thermoplastic material from the die head with the desired cross-sectional shape, then shape it by the shaper, and then pass it through the cooler to make it harden and solidify to become the desired cross-sectional shape product.
