Also known as extrusion molding.
Is one of the important methods of forming thermoplastic.
The material is heated and pressurized in an extruder so as to be in a molten flow state and then extruded continuously from the die.
This method can be used to prepare tubes, tubes, rods, films, sheets, profiles, wires; blown molding billet, monofilament, fiber, granulation with the material, cloth, paper and other plastic sheet And other plastic products.
Extrusion molding is the plastic raw material heating, so that was viscous state, under the action of pressure, through the extrusion die and cross-section and die shape similar to the continuum, and then the cooling stereotypes for the glass, To obtain a certain geometric shape and size of the plastic products.