High-performance extrusion system for PVC pipe, profile, sheet, and board production. Ideal for heat-sensitive materials with superior mixing and low shear heat generation.
Discover why conical twin screw extruders are the industry standard for PVC extrusion lines
Optimized for PVC and heat-sensitive plastic materials with consistent quality output.
Minimal heat generation protects material integrity, ideal for heat-sensitive compounds.
Stable melt pressure ensures high throughput from 60 to 1200 kg/hr depending on model.
Counter-rotating screws provide uniform plasticization and excellent material blending.
Advanced design reduces power consumption while maintaining peak performance.
Hardened screw and barrel construction (≥HV900) ensures extended operational lifespan.
Conical twin screw extruders are versatile machines widely used across the PVC processing industry for various product types.

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Product Types
Understanding the counter-rotating conical twin screw extrusion process
Raw material is fed into the hopper and conveyed forward with gradual compression.
Two conical screws rotate in opposite directions, ensuring strong feeding capacity.
Uniform melting and mixing at lower barrel temperatures for optimal material processing.
Molten material is shaped through a die and cooled using downstream equipment.

Counter-rotating conical twin screws provide superior mixing
Detailed specifications for models SJSZ-51 / 55 / 65 / 80 / 92
| Parameter | Specification |
|---|---|
| Screw Type | Conical, counter-rotating twin screw |
| Screw Diameter | 45/90 mm – 80/156 mm |
| L/D Ratio | 22:1 – 28:1 |
| Output Capacity | 60 – 1200 kg/hr |
| Processing Material | PVC, PVC-U, PVC-C, WPC |
| Control System | PLC + Touch Screen (HMI) |
| Cooling System | Air & water cooling |
| Operation | Continuous |
| Parameter | Specification |
|---|---|
| Main Motor Power | 18.5 – 110 kW |
| Drive Type | AC Motor with VFD |
| Gearbox | High-torque hardened gearbox |
| Power Supply | 3 Phase, 380–415V, 50Hz |
| Parameter | Specification |
|---|---|
| Heating Zones | 4 – 10 zones |
| Heater Type | Ceramic / Cast aluminum |
| Temperature Accuracy | ±1°C |
| Max Barrel Temperature | Up to 300°C |
| Parameter | Specification |
|---|---|
| Barrel Material | Nitrided alloy steel |
| Screw Surface Hardness | ≥ HV900 |
| Frame | Heavy welded steel |
| Noise Level | ≤ 85 dB |
| Mounting | Floor mounted |
Explore detailed views of our conical twin screw extruder components, controls, and factory installations

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Complete your extrusion line with our range of auxiliary equipment
Automatic Vacuum Hopper Loader
Material Mixer & Dosing System
Hydraulic / Automatic Screen Changer
Vacuum Calibration Table
Cooling Tank
Haul-off Unit
Cutter / Saw / Stacker
PLC Recipe System
Online Thickness Control
For pre-owned conical twin screw extruders, SASA IMPEX provides comprehensive inspection and quality verification:
Container-ready packaging
Indian standards (415V, 50Hz)
Commissioning assistance
Documentation & training