Conceptual comparison
Extrusion is also known as extrusion in plastic processing, and is used in the processing of non-rubber extruders by using hydraulic press pressure to extrude the extrusion of the mold itself. It refers to a processing method in which the material passes through the action between the barrel and the screw of the extruder, is plasticized while being pushed forward by the screw, and continuously passes through the machine head to make various cross-section products or semi-products.
After the plastic injection molding machine uses plastic to heat to a certain temperature, it can be melted into a liquid property, and the molten liquid is injected into the closed cavity by high pressure, and after cooling and setting, the mold body is ejected and the desired plastic product is obtained.
Suitable raw materials
Extrusion:
Most thermoplastics and some thermosetting plastics, such as PVC, PS, ABS, PC, PE, PP, PA, acrylic resin, epoxy resin and melamine resin.
Injection molding:

With the exception of a very small number of thermoplastics, almost all thermoplastics can be formed by this method. Injection molding can also process certain thermosetting plastics, such as phenolic plastics.