Vacuum feeder → Infrared crystal dryer → Vacuum dis-charger → Single screw extruder → Hydraulic screen exchanger → Water cooling die head → Water flushing trough → Water flushing pelletizer → Dewatering machine → Vibrating sieve machine → Finished product packing.
Infrared Crystal Dryer
① Efficiency
Improving the physical properties of food-grade PET using infrared technology to maintain intrinsic viscosity (IV).
② Quality Control
Pre-crystallization and drying minimize IV loss, which is essential for resin reuse.
③ Optimized Drying
High-speed drying (15-20 mins) prevents yellowing and reduces moisture to ≤ 30ppm with low energy consumption.
④ Material Integrity
Reduced shearing and consistent preheating temperatures ensure stable processing.
⑤ High Output
Bulk density increases of 10-20% improve feed performance and screw filling efficiency.
| Machine Name | PET Single Screw Extrusion pelletizing Line |
| Raw Material | rPET Flakes |
| Final Product | rPET Pellets |
| Screw Diameter | 90mm-150mm |
| Output Range | 150-1000KG/H |
Frequently Asked Questions
Q: How much does the system improve capacity?
A: By utilizing a uniquely designed screw for rPET flakes, the capacity increases by 20% compared to parallel double screw extruders.
Q: Is the viscosity maintained?
A: Yes, the system results in a minimal viscosity drop of only ≤0.02-0.03dl/g without additives.
Q: Does the product require transparency enhancers?
A: No, the final rPET pellets are transparent without the need for additional transparency enhancers.
Q: How is energy consumption managed?
A: The infrared drying system is highly efficient, consuming less than 60-80W/KG/H.
Q: What is the benefit of the drying speed?
A: Drying time is reduced to only 15-20 minutes, which prevents the material from turning yellow.
