Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of some complex-shaped parts. Specifically, it refers to the high-pressure injection of the plastic melted by heat into the mold cavity by the injection molding machine, and the molded product is obtained after cooling and solidification.

The composition generally includes seven parts:
Gating system
Molded parts, i.e. cavity
Exhaust structure
Roll out structure
Side core structure
Clamping guide structure
Heating and cooling system