Characteristics of gradient screw: The compression section is long, accounting for 50% of the total length of the screw. During plasticization, energy conversion is gentle, and it is mostly used for plastics with poor thermal stability such as PVC.
Characteristics of mutation type screw: The compression section is relatively short, accounting for about 5% to 15% of the total length of the screw. During plasticization, energy conversion is more intense, and it is mainly used for crystalline plastics such as polyolefins and PA.
Characteristics of Universal Screw: A universal screw with strong adaptability, which can be used for processing various plastics.
