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This automatic waste plastic granulation line converts various types of plastic waste into reusable pellets through a continuous process of crushing, washing, melting, extrusion, cooling and cutting. The system integrates multiple processing stages into a single automated workflow, supporting both wet and dry processing methods as well as coarse and fine material handling. The equipment design prioritizes operational continuity and ease of maintenance, with components selected for extended service life in commercial production environments.
 | Automatic Feeding SystemThe system features a quantitative conveyor equipped with a frequency converter, allowing precise control of material conveying speed. Once materials are loaded into the hopper, the screw mechanism automatically feeds them into the extruder. This automated process reduces manual labor requirements and maintains consistent material flow rates for stable production output. |
Extruder UnitThe extruder screw is manufactured from 40GrMoAi alloy steel and undergoes high-frequency heat treatment. The screw barrel is constructed from 45# carbon steel, with its inner wall subjected to high-frequency heat treatment and precision grinding. The reducer features high-precision hardened surfaces and a thrust seat specifically engineered for plastic extrusion applications. |  |
 | Filtration and Die-Head SystemThe double-board hydraulic die-head connects to the screw end and filters impurities from the molten plastic material. The dual mesh plate design enables free switching between left and right channels, allowing screen changes without interrupting production operations. This feature reduces downtime during material changeovers and maintenance procedures. |
Cooling and Cutting SystemThe water cooling tank lowers the temperature of extruded plastic strands before they enter the cutter machine. A plastic drying unit removes surface moisture from the cooled strands. The cutter machine uses a hob design that allows adjustment of pellet size, accommodating different production requirements for various plastic materials including PC, ABS, PP, PA, PVC, POM, PPR and PBT. |  |
 | Pellet Storage SystemA high-pressure air blower transports finished pellets into the storage silo. The silo is constructed from stainless steel material, providing corrosion resistance and easy cleaning for different production runs. |
Component | Material | Treatment Process | Key Feature |
Extruder Screw | 40GrMoAi Alloy Steel | High-frequency heat treatment | Extended service life |
Screw Barrel | 45# Carbon Steel | High-frequency heat treatment + precision grinding | Smooth material flow |
Storage Silo | Stainless Steel | Standard fabrication | Corrosion resistance |
Die-Head | Hydraulic double-board | Precision machining | Non-stop screen changing |
This granulation line processes multiple plastic types including PE, PP, PS, ABS, XPS, EPS, PVB and HDPE. It handles various waste forms such as crushed ABS material, plastic drum flakes, PP barrel flakes, PP basin flakes, PP woven bags, PP plastic cup material, heavy ink BOPP, rigid PP flakes, blown film, PE film dry material and PE film flakes. The equipment supports industrial applications in packaging recycling, manufacturing waste processing and plastic reprocessing facilities.
This equipment processes a wide range of plastic materials including PE, PP, PS, ABS, XPS, EPS, PVB and HDPE. It handles different waste forms such as films, flakes, woven bags, rigid plastics and foam materials.
The double-board hydraulic die-head features two independent mesh channels. When one screen requires replacement, the system switches to the alternate channel without stopping production. This design minimizes downtime during continuous operation.
The system features a reasonable structure with accessible components for routine maintenance. The screw and barrel are designed for abrasion resistance, reducing the frequency of replacement. Bearings use advanced lubrication systems to extend service intervals.
