A twin-screw extruder, a key piece of equipment in the plastics processing field, works by using two main shafts rotating in the same direction within the barrel to convey and mix granules or powders, thereby producing semi-finished or finished products. Specifically, after the material is added from the hopper, it is propelled and mixed by the screws, undergoing the combined effects of pressure and shear forces. Frictional heat or heating causes it to melt, completing the plasticizing process, and then it is extruded through the die.
In traditional engineering plastics production, such as the manufacture of ABS granules, it is usually extruded into strips through a perforated die, and then traction-cut into pellets to become semi-finished products. It is worth noting that with the advancement of ABS production technology, the current production method has gradually evolved into one-stage extrusion technology, that is, directly pelletizing through a vertical die.
