EPS, XPS, EPE Re-Pelletizing Machines

Sunwell Global offers an advanced range of die-face cutting, water-flushed re-pelletizing lines, engineered for stable operation, high output, and consistent pellet quality. These systems enable manufacturers to reduce material waste, lower raw material costs, and support sustainable production.

Automated Scrap Feeding and Material Flow Control

Foam scrap and fluff are conveyed to the hopper via an air conveying system with reverse jet fabric filtration. A rotating anti-bridging blade inside the hopper ensures smooth material flow into the forced feeding system, delivering a uniform and controlled feed to the extruder.

High-Capacity Extrusion with Low Energy Consumption
The extruder features a large-diameter feed zone screw design, providing sufficient surface area and residence time for gradual plasticizing and complete melt homogenization. This design supports high throughput while maintaining low power consumption.

Efficient Degassing and Melt Purification
An integrated vacuum degassing system removes volatile contaminants and trapped gases from the melt, preventing air bubbles and ensuring a stable, continuous melt flow to the die. A continuous screen changer maintains consistent process conditions during filter changes and improves final pellet cleanliness.

Precision Die-Face Cutting and Process Synchronization
The horizontally mounted die-face cutter is synchronized with the extruder and forced feeder speeds for stable and operator-friendly operation. An adjustable dial gauge ring allows precise blade-to-die gap setting, optimizing cutting quality and extending blade service life.

Water-Flushed Cooling and Pellet Drying System
A side-hinged water ring pelletizing drum with tangential cooling water injection rapidly cools and flushes pellets to a dehydrator or vibratory dryer, followed by cyclone collection. The system produces uniform pellets (3–6 mm) with low moisture content, ensuring excellent downstream processing performance.