The twin-screw is also divided into feeding section, compression section and homogenization section. There are many types of twin-screw extruders, which are mainly divided according to the rotation direction of the screw and the meshing degree of the screw. According to the meshing degree, the two screws can be divided into full meshing type, partial meshing type and non meshing type. The conveying of non meshing screw is similar to that of single screw, which is rarely used, and the full meshing twin screw is widely used.

According to the rotation direction of the two screws, they can be divided into co rotating twin screw, inward reverse rotating twin screw and outward reverse rotating twin screw. According to the geometric angle of the two screw axes, it can be divided into parallel twin-screw and conical twin-screw.

Technical Specification