The main differences between conical and parallel twin screw extruders lie in the following aspects:
1.Structure: In a conical twin screw extruder, the screws have a tapered shape with different diameters at the feed and discharge ends. Parallel twin screw extruders have screws of the same diameter throughout their length.
2.Mixing performance: Conical twin screws offer better self-cleaning capabilities and are suitable for processing materials with high viscosities and complex formulations. Parallel twin screws provide more uniform mixing and are often used for precise compounding and blending operations.
3.Capacity and pressure generation: Conical twin screws typically have a higher capacity for extrusion and can generate higher pressure. Parallel twin screws may be preferred when more controlled and gentle pressure build-up is required.
4.Application fields: Conical twin screw extruders are commonly used in the production of PVC pipes and profiles. Parallel twin screw extruders are widely used in polymer compounding, masterbatch production, and other applications.
These differences make each type of extruder suitable for specific processing requirements and materials.
