Extruding PET flakes into polyester staple fiber
RobotDigg SJ30PSF and SJ45PSF are specialized extrusion system designed to convert recycled PET bottle flakes directly into high-quality synthetic fiber (PSF). By utilizing a high-torque motor and a precision-engineered screw, this machine melts and "blows" recycled plastic into a soft, fibrous, silk-like material used extensively in the textile, bedding, and filtration industries.
Lab-scale experiment synthetic fiber extruder SJ30
No. Item Specification / Configuration
Extruder Model SJ30
Screw & Barrel Material: 38CrMoAlA; Quenched, Tempered, and Nitrided
Screw Diameter 30 mm
Screw L/D Ratio 25:1
Main Motor Power 3 kW Cycloidal Gear Motor
Motor Speed Control Robicon 3 kW Variable Frequency Drive (VFD)
Barrel Heating Ceramic Heaters
Heating Power 1 kW × 5 Zones (3 Barrel Zones, 1 Die Zone, 1 Air-Heater Zone)
Electrical Components Chuangtai Temp Controllers, Tianzheng Contactors, Heli Buttons
Output Capacity Approx. 7 kg/h
Die Head 100 mm
Dimensions (L×W×H) 1700 × 450 × 1100 mm
Voltage 380V, 50Hz (Customizable for a surcharge)
Total Weight Approx. 280 Kg
The SJ45PSF (where PSF likely stands for Polyester Staple Fiber) features a much longer screw and higher motor power, making it a true industrial-grade production line.
Model SJ45PSF
Screw & Barrel Material: 38CrMoAlA (Quenched, Tempered, and Nitrided)
Screw Diameter 45 mm
Screw L/D Ratio 25:1 (Optimized for thorough melting and mixing)
Main Motor Power 22 kW
Motor Speed Control Robicon 11 kW Variable Frequency Drive (VFD)
Barrel Heating High-efficiency Ceramic Heaters
Heating Zones 7 Zones Total: 5 Barrel zones (1.8 kW each), 1 Die zone, 1 High-pressure air-heater zone
Electrical Components Chuangtai Temperature Controllers, Tianzheng Contactors, Heli Control Buttons
Production Capacity Approx. 25 kg/h
Die Dimensions 300 mm × 100 mm
Hopper Material 201 Stainless Steel
Dimensions (L×W×H) 2600 × 1100 × 1500 mm (Crated for shipping)
