60/113 Conical Twin Screw Barrel

The 60/113 conical twin-screw barrel is specifically designed for PVC processing. Its converging geometry - 113mm at the feed end and 60mm at the discharge - delivers high torque for feeding bulky materials while building stable melt pressure at the outlet. This configuration naturally reduces shear heat, making it ideal for heat-sensitive PVC, UPVC, and CPVC. The intermeshing screws provide self-cleaning action to prevent material stagnation. Both screws and barrels are made from nitrided or bimetallic alloys to resist HCl corrosion.

The 60/113 conical twin screw barrel is purpose-built for rigid PVC extrusion processes in pipe, profile, and sheet manufacturing. In PVC pipe production, the barrel's converging geometry generates the melt pressure required to extrude pipes ranging from small diameter plumbing pipes to large diameter sewer and irrigation pipes. For PVC window profile extrusion, the twin-screw configuration ensures thorough plasticating and uniform melt for profiles requiring consistent wall thickness and surface finish. The sheet extrusion industry uses this barrel to produce PVC sheets for vacuum forming applications in automotive interior components and refrigeration liner panels. Pelletizing lines for rigid PVC compounds rely on the self-cleaning intermeshing screw action to prevent material stagnation and ensure consistent output quality. The inherent low-shear design also makes this configuration suitable for processing CPVC and UPVC compounds used in hot/cold water piping systems.