Recently, our CHT65D twin-screw extrusion water-cooled strand pelleting line successfully passed customer acceptance and is now officially operational. Specifically engineered for the compounding and pelletizing of high-performance engineering plastics, this production line is optimized for materials such as PA+GF (Glass Fiber Reinforced Nylon), ABS/PC alloys, and flame-retardant plastics. The high-quality granules produced are dedicated to demanding applications within the automotive industry.
The equipment features a high-torque design with an L/D ratio of 44, ensuring superior mixing and dispersion. To tackle the challenges of processing abrasive materials, the extruder is equipped with specialized high-wear-resistant HIP (Hot Isostatic Pressing) barrel bushings and WR-series screw elements. The drive system is powered by a 160KW Innomotics high-efficiency motor, reaching the International IE4 efficiency standard. For transmission safety, it incorporates a German R+W torque-limiting coupling, providing instantaneous overload protection to safeguard core components during continuous operation.
To accommodate complex formulations, the line is configured with a side feeder for the stable introduction of short fibers and a precision liquid metering and injection system. The liquid system utilizes a jacketed design with a thermal oil preheating device, specifically designed for the accurate dosing of BDP halogen-free organophosphorus flame retardants. Regarding thermal control, the extruder uses heavy-duty solid copper heaters (approx. 45mm thick), which offer significantly higher reliability and thermal stability compared to standard 28–30mm cast copper versions. Furthermore, the barrel covers feature a multi-layer insulation design, maximizing energy efficiency and reducing heat loss.
The downstream system includes a gantry-style pelletizer optimized for low-noise operation. During on-site performance tests at the client’s facility, the production line demonstrated exceptional productivity: achieving a steady output of 500 kg/h, with peak capacity reaching 700 kg/h for specific formulations. Professional material performance testing confirms that the physical properties of the resulting pellets not only meet but exceed current enterprise standards, marking a significant success for the CHT65D series in high-end plastics manufacturing.
