Conical Twin Screw Barrel – Optimized for PVC Extrusion & High Torque Output

Our Conical Twin Screw Barrels are specially engineered for high-efficiency PVC extrusion applications, providing superior plasticizing performance, torque resistance, and long service life. Precision-crafted to match industry-leading extruder models such as KraussMaffei, Battenfeld, Cincinnati, Amut, and major Chinese brands like Zhangjiagang extruder systems.

🔧 Technical Specifications:

• Material options:

  • 38CrMoAlA (nitrided): Surface hardness HV ≥ 900, nitriding depth 0.5–0.8mm

  • Bimetallic barrel (Fe/Ni-based alloy): Hardness HRC 60–65, wear resistance enhanced by 2–3x

• Screw diameter range: Ø45/90 mm to Ø92/188 mm

• Length-to-diameter (L/D) ratio: Typically 18:1 – 25:1

• Screw structure: Variable pitch, compression ratio customizable based on PVC formulation

• Surface finish: Ra ≤ 0.4μm, ensuring excellent melt flow

• Cooling channels: Optional spiral cooling design for improved thermal control

📦 Application Scope:

• PVC pipe extrusion: Water supply, drainage, electrical conduit

• PVC profile extrusion: Window frames, wall panels, ceiling boards

• WPC profiles: Wood-plastic composites

• Foamed boards: Low-density PVC building boards

• Granulation/Pelletizing of rigid or soft PVC materials

🌍 Machine Compatibility:

Fully compatible with:

• KraussMaffei KMD series

• Battenfeld BA/BS series

• Cincinnati CM and Titan series

• Amut and Zhangjiagang twin screw extruders

📈 Performance Advantages:

• Output capacity up to 1000 kg/h (depending on screw size & material)

• High torque transmission for stable performance at low RPM

• Reduced material degradation thanks to optimized compression zones

• Longer lifespan even under high filler or abrasive material processing