Single screw extruder | Single screw sheet extruder | Single screw sheet extruder

Principle of single-screw extruder
The last thread of the feed port is called the conveying section. The material here is required not to be plasticized but must be preheated and pressed for extrusion. In the past, the old extrusion theory believed that the material here was loose, which was later proved. The material here is actually a solid plug, which means that after being squeezed, the material here becomes a solid like a plug, so as long as it completes the transportation task, that is its function.
Principle of single-screw extruder The second section is called the compression section. The volume of the screw groove gradually decreases from large to small, and the temperature reaches the plasticization level of the material. Compression occurs here. The third section of the conveyor section is compressed here to the first section. This is called the screw. The compression ratio of some machines also changes, and the plasticized material enters the third stage.
Principle of single-screw extruder The third section is the metering section where the material is maintained at the plasticizing temperature and the melt material is accurately and quantitatively transported to the machine head like a metering pump. At this time, the temperature cannot be lower than the plasticizing temperature and is generally slightly higher. point.
The single-screw extruder is mainly used for extruding thermoplastic plastics such as soft and hard polyvinyl chloride, polyethylene, etc. It can process a variety of plastic products such as film, tube, plate, ribbon, etc. It can also be used for granulation.
The plastic extruder has advanced design, high plasticization, good plasticization and low energy consumption. It adopts involute gear transmission and has the characteristics of low noise, smooth operation, large bearing capacity and long life.
Applications of single-screw extruder
Pipe extrusion is suitable for pipes, gas pipes, cross-linked pipes, aluminum-plastic composite pipes, silicon core pipes and various co-extruded composite pipes.
Plate and sheet extrusion is suitable for the extrusion of profiles and plates. Extrusion of various other plastics such as wire rods, etc.
The extrusion of profiles can be applied to the production of various plastic profiles such as polyolefins by adjusting the speed of the extruder and changing the structure of the extrusion screw. Modified granulation is suitable for blending, modification and enhanced granulation of various plastics.