Extruders are a type of plastic machinery, originating in the 18th century.
Extruders can be classified into right-angle extruders and angled extruders based on the angle between the material flow direction at the die head and the screw centerline.
Screw extruders rely on the pressure and shear force generated by the rotating screw to fully plasticize and uniformly mix the material, which is then formed through a die. [2] Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders, and less common multi-screw extruders and screwless extruders.
