Plastic extruder is the main machine of plastic extrusion equipment, and the follow-up support equipment plastic extrusion machine is called auxiliary. After the 100 years’ development, plastic extruder has developed from the single screw to twin-screw, multi-screw, even the non-screw and so on. The plastic extruder can match with various kinds of plastic molding auxiliaries, such as tubing, thin film, monofilament, flat filament, packing tape, extruded net, plate (sheet) material, profiled material, granulation, cable cladding and so on. All of the components mentioned above constitute various plastic extrusion production lines and produce various plastic productions. Therefore, plastic extruder will be a kind of machine which will be extensively used in plastic processing industry, whether in future or at present.
Plastic extruder came from the extruder. The extruder originated from 18th century. English Joseph Bramah made manual piston extruder which used for making seamless lead pipe in 1795. This extruder was regarded as the first extruder in the world. From then on, in the before 50 years of 19th century, the extruder was only used in the produce of lead pipe, the processing of macaroni and other food, the produce of brick and ceramics and so on. With the development, the extruder began to use in more and more areas, for example the plastic extruder which made the produce of plastic more and more convenient.