The injection molding process can be roughly divided into the following six injection molding stages

Moulding, gelling, keeping pressure, cooling, opening mold, product out.The above process is repeated, can be batch periodic production of products.The molding of thermosetting plastics and rubber also includes the same process, but the temperature of the cylinder is lower than that of the thermoplastic, but the injection pressure is higher, the mould is heated, the material injection needs to be cured or vulcanized in the mould, and then the film is removed while the heat is hot.Nowadays, the trend of processing technology is developing in the direction of high and new technology. These technologies include micro injection molding, high filling compound injection molding, water assisted injection molding, mixed use of various special injection molding processes, foam injection molding, mold technology,Simulation techniques.