The plastic is first heated and melted in the heating cylinder at the bottom of the injection molding machine. Then, under the action of the screw or plunger of the injection molding machine, it enters the mold through the nozzle of the injection molding machine and the gating system of the mold, where the plastic is cooled and solidified to form the finished product, which is then removed from the mold.
Plastic injection molds are usually composed of molding parts, runner systems, guide parts, ejection mechanisms, temperature control systems, air exhaust systems, support parts, etc. The materials for production are usually plastic tool steel modules. The most commonly used materials are carbon structural steel, carbon tool steel, alloy tool steel, high-speed steel, etc.
The injection molding method is generally cayman islands number data suitable for the production of thermoplastic products only. Plastic products produced by injection molding are very diverse, from daily items to various complex mechanisms, electrical appliances, vehicle parts, etc., all of which are formed using injection molds. It is the most widely used processing method in the production of plastic products.
Plastic compression molds include two types of structural molds: compression molding and pressure molding. These are molds that are mainly used for molding thermosetting plastics, and their corresponding equipment is a molding machine.
The compression molding method, depending on the characteristics of the plastic, involves heating the mold to the molding temperature (usually within the range of 103 ° - 108 °), then introducing a measured amount of molding powder into the mold cavity and the charging chamber, closing the mold, and the plastic becomes soft and viscous under the action of high temperature and high pressure.