Twin Screw Extruder

The Twin Screw Extruder is designed for the melting, kneading, mixing, and extrusion of powder coating raw materials. It is suitable for a wide range of powder coating formulations, including epoxy, polyester, hybrid, acrylic, and other resin systems. The twin-screw configuration provides controlled material conveying and intensive mixing, helping achieve effective melting, dispersion, and homogenization before the material enters downstream cooling, flaking, and grinding processes.

The screw feeding section is manufactured from Cr12MoV alloy steel and precisely machined using CNC equipment. The kneading section is also manufactured from alloy steel and precision-machined to provide reliable processing performance. The screw elements can be configured according to different product formulations, allowing the machine to be adapted to specific requirements for conveying, mixing, and kneading. Anti-backflow blocks are incorporated into the screw design to help prevent material from returning toward the feeding section.

The screw barrel is equipped with internal circulating water cooling, with forced cooling provided in the feeding zone. The gearbox features an independent forced water-cooling system to help reduce operating temperature. Matching surfaces are precision-ground and sealed to help prevent oil leakage during operation.

The gearbox output shaft uses a spline axial locking connection, while the gearbox input shaft is connected to the main motor through a safety coupling. In the event of main motor overload, the feeding system automatically stops, providing additional protection for the drive system and improving operational reliability.

Screw speed, heating capacity, and screw arrangement can be selected according to product requirements, making the series suitable for industrial production of different powder coating formulations.

Technical parameters