Rubber mold injection molding: also known as casting molding. The inner tube mold is to add the plastic raw materials into the preheating feeding room, then put the pressure column into the feeding room to lock the rubber mold, apply pressure to the plastic through the pressure column, the plastic melts into a flowing state under high temperature and pressure, and enter the mold cavity through the pouring system to gradually solidify into the plastic part. This forming method is also called transfer molding. The injection molding is applicable to the plastic which is lower than the solid plastic and can be compressed in principle, or the injection molding can be used. However, it is required that the material has good fluidity in the melting state when it is lower than the curing temperature, and larger curing rate when it is higher than the curing temperature.

Rubber die casting mold: die casting mold is also called transfer molding mold. The plastic raw materials are added into the preheated feeding chamber, and then the pressure is applied to the pressure column. The plastic melts under high temperature and pressure, and enters the cavity through the pouring system of the mold, gradually hardening and forming. This forming method is called die casting forming, and the mold used is called die casting forming mold. This kind of mould is mainly used for the forming of thermosetting plastics.

Rubber mold injection molding: firstly, the plastic is added into the heating barrel of the injection machine, the plastic is heated and melted, pushed by the screw or plunger of the injection machine, enters the mold cavity through the nozzle and the mold pouring system, and hardens and shapes into the injection products due to the physical and chemical effects. Injection molding cycle consists of injection, pressure maintaining (cooling) and demoulding process, so injection molding has the characteristics of periodicity. Thermoplastic injection molding has the advantages of short molding cycle, high production efficiency, small wear of molten materials on the mold, and large batch of plastic parts with complex shape, clear surface pattern and mark, and high dimensional accuracy. However, for plastic parts with large wall thickness change, it is difficult to avoid molding defects. Anisotropy of plastic parts is also one of the quality problems. All possible measures should be taken to minimize it.