The plastic is first heated and melted in the heating barrel of the injection molding machine, and then pushed into the mold cavity through the nozzle and mold casting system under the push of the injection machine screw or piston, and finally hardened and shaped in the cavity, which is a simple process of injection molding. The mold used for injection molding is called an injection molding mold. Injection molds are mainly used for the molding of thermoplastic products, but in recent years, they are increasingly used for the formation of thermosetting plastics. Injection molding accounts for a large proportion of the molding of plastic products, so about half of the production of plastic molding dies is injection molding.
It has the advantages of being able to form complex shapes in one time, accurate size, high productivity, etc. The most common products for injection molding are: computer case, connector, mobile phone case, keyboard, mouse, stereo and so on.