Plastic trestle

Plastic trestle is mainly manufactured by the injection molding process. The principle is to add granular or powdery raw materials into the hopper of the injection machine, and the raw materials are heated and melted into a flowing state. The gating system enters the mold cavity, and hardens and shapes in the mold cavity. Factors affecting the quality of injection molding: injection pressure, injection time, injection temperature. Plastic molding is divided into horizontal injection molding, vertical injection molding, two-color injection molding, low pressure injection molding, etc.