High Output Two Stage Plastic Recycling Pelletizing Line | Single Screw & Twin Screw Extruder

The "Single-Upper / Double-Lower Granulating Unit" is an advanced plastic compounding and pelletizing system that combines the advantages of a "single-screw upper extruder" with a "co-rotating twin-screw lower extruder". This innovative configuration is specially designed for high-performance plastic compounding, engineering plastic modification, masterbatch production, and recycled plastic processing. The upper single-screw extruder provides stable material conveying and efficient pre-plasticizing, while the lower twin-screw extruder delivers intensive mixing, dispersion, homogenization, and degassing, ensuring outstanding pellet quality and production stability. The system is suitable for processing "PP, PE, ABS, PS, PA, PC, PET, PBT, TPU, TPE, EVA, PVC, biodegradable plastics, recycled plastics, engineering polymers, color masterbatch, filler masterbatch, glass fiber reinforced compounds, and mineral-filled plastics". Compared with conventional pelletizing equipment, the dual-stage extrusion design significantly improves melting efficiency, mixing uniformity, and impurity removal while maintaining precise temperature control and stable extrusion pressure. The modular twin-screw section can be customized with different screw elements to meet specific formulation requirements, making the machine ideal for processing high-filler materials, engineering compounds, flame-retardant plastics, reinforced polymers, and functional masterbatches. Its optimized extrusion process enhances material dispersion, reduces energy consumption, and produces smooth, dense, and uniformly sized pellets with excellent mechanical properties.