The so-called injection molding is that after the plastic material is plasticized into a melt by the shear heat generated by external heating and the rotation of the screw in the barrel of the injection molding machine, the melt is injected into a certain shape by applying a certain pressure. The item produced after cooling and setting in the cavity is injection molding.

Before injection molding, the anti-rust oil on the mold surface, cavity, gaps around inserts, nozzles, runners and other parts should be cleaned to prevent oil from sticking to the product or blocking the exhaust of the mold due to oil. Affect the stability of molding. Mirror products, electroformed shells, and molds with strict post-processing appearance requirements are strictly prohibited to wipe with cotton wool, rags, and old gloves to prevent damage to the mold surface during operation, resulting in scratches on the surface of the product. It is usually rinsed with mold washing water and blown with an air gun at the same time.

During operation, prevent the air gun or other objects from touching the surface of the mold. When dismantling the mold for cleaning, pay special attention to the dismantled inserts and mold shells in a special plastic box, and when necessary, wrap them with pearl cotton sheets and soft cloth sheets for storage. Non-professionals are not allowed to disassemble the mold for cleaning. It is best to clean the mold before putting it on the machine. First, it is easy to clean, which can ensure the quality, and second, it can save the time of turning the mold.