The processing of injection molded parts is a complicated process, including pre-heating, molding, cooling, demoulding and other processing steps. Every stage has its necessity, so it is impossible to omit any processing part of injection molded parts to ensure injection molding. The molding quality of the piece.

For the processing of injection molded parts, preheating is to improve the quality of the product and improve the molding efficiency, etc., mainly to heat the molding compound before molding, and to preliminarily press the powder or the fibrous molding compound into a certain shape. The mold is then filled with the required amount of plastic, closed, vented, held at molding temperature and pressure for a period of time, and then demolded.

During the processing of injection molded parts, the main equipment used for compression molding is presses and molds. Among them, the presses use more self-supplied hydraulic presses. The tonnage ranges from tens of tons to several hundred tons. Press and press-up press. However, in either case, a larger flat product can be produced by molding and mass production can be achieved.

Lamination molding of injection molded parts is usually carried out by a laminating machine, and two or more layers of the same or different materials are combined into one by means of heat and pressure. At present, the commonly used reinforcing materials for laminating are cotton cloth, glass cloth, paper, asbestos cloth, etc. The resin is phenolic, epoxy, unsaturated polyester and some thermoplastic resins, and injection molded parts are also included.