High Quality 92/188 Conical Twin-Screw Extruder for PVC WPC Board Production Line

Yongte SJSZ 92/188 Conical Twin Screw Extruder is specifically engineered for the production of PVC wood-plastic composite (WPC) foam boards and has already received strong praise from the customer for its outstanding quality and reliable performance. At its core is a 92 mm diameter conical twin-screw system, optimized for uniform plasticization and efficient mixing of PVC wood-plastic composite formulations. The conical screw geometry ensures excellent shear control and material compression, making it ideally suited for foam board extrusion where consistent density and surface finish are critical.

Technical Parameter

Machine advantages

I. Structural Advantages:

The extruder is mounted on an integrated heavy-duty base frame, providing exceptional structural rigidity and vibration damping during high-load operation. This robust foundation contributes directly to the machine's long-term precision and reliability.

1. Integrated Thickened Steel Base

Features a fully welded structure with stress-relief treatment, ensuring high rigidity; it resists resonance and body vibration during high-speed operation. The base integrates multiple access panels to house electrical and hydraulic components, resulting in a tidy layout that facilitates maintenance and reduces on-site cable/hose clutter. Standard mounting interfaces are pre-configured to simplify equipment positioning and leveling.

2. Independent High-Power Main Drive Unit

Equipped with a dedicated variable-frequency drive motor and a high-torque reduction gearbox on the left side. It offers high load-bearing capacity suitable for demanding applications—such as high-filler or glass-fiber-reinforced materials—and provides ample torque reserves for stable, long-term continuous operation, minimizing the risk of screw breakage or gear failure.

3. Safety and Ergonomic Design

An orange, open-mesh safety guard covers the barrel to prevent accidental contact with hot, moving parts. The feed inlet features a stainless-steel loss-in-weight hopper and a feeding conveyor system, enabling automated, enclosed material loading that minimizes airborne dust and improves the workshop environment.

II High-Performance Drive and Transmission

To deliver both power and energy efficiency, the extruder is equipped with a 110 kW permanent magnet servo motor. Compared with conventional drive systems, the servo motor offers precise speed control, rapid response, and significantly reduced energy consumption — a key advantage for customers seeking to lower operational costs while maintaining high output.

Power is transmitted through a high-torque, high-strength hardened-gear reducer, engineered for durability under continuous heavy-load operation. The hardened gear surfaces ensure minimal wear, extended service life, and stable, quiet performance over long production runs. The gearbox also delivers excellent mixing and self-cleaning performance, preventing material buildup and ensuring consistent melt quality throughout the extrusion process.

III Intelligent Control with Siemens PLC

The machine features an intelligent electrical control system built around a Siemens PLC, providing the customer with a highly reliable, user-friendly operation interface. Key production parameters — including temperature profiles, screw speed, feed rate, and extrusion pressure — are monitored and adjusted in real time, ensuring process consistency and reducing the risk of production defects.

The control system is housed in an integrated electrical cabinet with a split-door design, paired with a separated HMI console that gives operators a clean, ergonomic workspace away from the heat and vibration of the main machine. The cabinet incorporates an independent forced cooling system to maintain optimal internal temperatures, along with interlock safety protection to safeguard both personnel and equipment. The entire enclosure is dust-proof, specifically engineered to withstand the demanding environment of a plastic production workshop.

IV. Core Process Performance Advantages

1. Uniform Compounding and Plasticization; Stable Product Quality

Utilizes a modular screw configuration with intermeshing, self-wiping twin screws, delivering excellent dispersive and distributive mixing. Materials such as wood flour, calcium powder, glass fiber, and various additives are thoroughly blended, resulting in minimal color variation and consistent performance—ideal for high-end modified material production.

2. Excellent Self-Cleaning; Reduced Material Carbonization

The intermeshing screws wipe against each other, eliminating stagnant zones within the barrel. This design facilitates frequent formula changes and rapid purging/color switching, reducing waste and supporting flexible, multi-variety production.

3. Broad Material Compatibility

Capable of processing PP, PE, ABS, PLA (biodegradable materials), high-filler powders, WPC (wood-plastic composites), and recycled materials. Equipped with multiple vacuum degassing ports to efficiently remove moisture and low-molecular-weight volatiles, preventing defects such as bubbles or porosity in the final product. 

4. Stable conveying and high production capacity

Forced positive conveying minimizes material slippage, ensuring stable feeding even with high-fill formulations. It delivers higher output than single-screw equipment for the same installed power, making it ideal for continuous, 24-hour industrial-scale pelletizing operations.

Modular design for easy maintenance

The barrel features a segmented structure, and screw elements can be disassembled and reconfigured as needed. Wear parts are easily replaced, and maintenance downtime is minimized, thereby increasing production line uptime.