In order to ensure the smooth progress of Injection Molding and product quality, a series of preparatory work such as raw material pretreatment, cleaning, machine barrel, preheating of inserts, and selection of release agents are required before production. The Injection Process generally includes: feeding plasticizing injection cooling demolding. Feeding: Due to the intermittent process of injection molding, quantitative (constant volume) feeding is required to ensure stable operation, uniform plastic plasticization, and ultimately obtain high-quality plastic parts. 
Plasticization: The process in which a molded material undergoes heating, compaction, and mixing within the barrel of an injection machine, transforming from a loose powder or granular solid state into a continuous homogenized melt.
Injection: The plunger or screw starts from the measuring position inside the barrel, applies high pressure through the injection cylinder and piston, and quickly sends the plasticized plastic melt through the barrel, the nozzle at the front end, and the pouring system in the Mold into the closed mold cavity. Injection can be further divided into three stages: flow molding, pressure maintaining and contraction, and backflow.
Mr. ksj