Single screw extruder classification

Usually screw can be divided into ordinary type, gradual change type, mutation type, mixing type, separation type, flow type and various barrier type, pin type, DIS open tie flow type and exhaust type; Screw head can be single head or variable head.

For general did not add flame retardant plastics, the use of general purpose screw can be processed, only need to choose different diameters according to different melt viscosity can. If it is a plastic with special properties, special products or plastic with special grain shape, a special screw must be used. General purpose screw is not as good as special screw in terms of plasticization and power consumption for a particular type of plastic.