Twin screw extruder industry value

Experts from the twin-screw extruder service provider Nanjing Jie Ente Electromechanical Co., Ltd. said that the twin-screw extruder is used to start the heating process, and the temperature of several stages is also turned over to start heating. Of course, this method is also commonly used. However, the temperature of the die has not yet arrived after the temperature of the screw reaches the inevitable target. Therefore, in this case, the screw is usually kept warm, and then the temperature of the die is gradually raised to the setting. After the temperature is started, it is the most energy-saving.

      Experts from twin-screw extruder service provider Nanjing Jieente Electromechanical Co., Ltd. said that the appropriate compression ratio of twin-screw extruder can increase the density of plastics and make the combination of molecules and molecules more tight, which helps to reduce air absorption and reduce The temperature rise caused by the pressure affects the difference in output. The inappropriate compression ratio will destroy the physical properties of the plastic. The higher the compression ratio, the higher the temperature rise during the plasticization process of the plastic in the material tube. The plastic in the process produces better mixing uniformity, and the relative discharge amount is greatly reduced. The high compression ratio is suitable for non-melting plastics, especially low melt viscosity, heat stable plastics; low compression ratio is suitable for fusible plastics, especially high melt viscosity, heat sensitive plastics.

The twin-screw extruder expert said that when the twin-screw extruder is working, the melt will generate a very large pressure (head pressure) at the head of the screw. The pressure is usually around 14MPA, sometimes even as high as 30MPA or more. The screw forms a strong axial thrust, and the thrust is the function of the thrust bearing. A significant feature of twin-screw extruders compared to other models is the difference in drive trains. Twin-screw extruders require that the power be evenly distributed across the two screws in a confined space. This is the torque distribution technique. Different torque distribution technologies determine the load carrying capacity of the gearbox and even directly affect the life and performance of the complete machine.