PP Jumbo Bag Recycling Washing Line

The SUHUI PP jumbo bag recycling washing line is a specialized system designed to recycle used polypropylene (PP) bulk bags, FIBCs (Flexible Intermediate Bulk Containers), and ton bags into clean, reusable PP flakes or pellets. These woven PP bags accumulate heavy contamination from bulk material transport — including embedded sand, soil, chemical powders, and moisture — requiring more intensive processing than standard plastic film recycling.

The line addresses the unique challenge of woven PP bag recycling with an anti-winding shredder that prevents bag fabric from wrapping around rotor blades, followed by multi-stage hot washing, intensive friction scrubbing, and centrifugal drying to produce high-purity PP output. Recycled pellets meet quality requirements for manufacturing new industrial bags, packaging film, and injection-molded plastic products.

Configurable for capacities from 100 to 2,000 kg/h, the system is suitable for both small recycling operations and large-scale FIBC recovery facilities. All components are manufactured from corrosion-resistant materials to withstand continuous exposure to hot water, alkaline solutions, and chemically contaminated bag waste.

Key Features of SUHUI PP Jumbo Bag Recycling Washing Line

• Anti-Winding Shredder: Specially designed rotor geometry prevents woven PP fabric from wrapping around the shredder shaft — the most critical requirement for reliable jumbo bag processing.
• Heavy Contamination Handling: System is designed to process bags containing residual sand, chemical powders, soil, and moisture without pre-cleaning or manual preparation.
• Multi-Stage Hot Washing: Sequential pre-wash, hot wash (60–80°C), and alkaline chemical wash progressively remove embedded dirt, chemical residues, and surface contaminants from shredded PP flakes.
• High-Speed Friction Scrubbing: Intensive friction washers mechanically scour PP flake surfaces to remove stubborn embedded contaminants that hot washing alone cannot eliminate.
• Centrifugal Dewatering: High-speed centrifugal dryers remove surface water from flakes before thermal drying, reducing drying energy consumption significantly.
• Thermal Drying System: Hot air drying reduces final moisture content to below 1%, producing dry PP flakes ready for pelletizing or direct reuse.
• Closed-Loop Water Recycling: Optimized water circulation and heat recovery systems minimize fresh water consumption and reduce wastewater treatment requirements.
• Fully Automated Operation: PLC-controlled line operation minimizes manual intervention and ensures consistent output quality across all production shifts.
• CE-Certified Safety Systems: Dust control, emergency stops, and safety interlocks comply with international CE machinery safety standards.

PP Jumbo Bag Recycling Washing Line Process

1. Bag Sorting & Inspection: Incoming jumbo bags are inspected and sorted. Severely contaminated or non-PP bags are removed to protect downstream equipment and output quality.
2. Anti-Winding Shredding: Whole jumbo bags are fed into the anti-winding shredder, which tears and cuts the woven PP fabric into manageable flakes without shaft wrap-around or jamming.
3. Pre-Washing: Shredded PP flakes enter a pre-wash tank where ambient water removes loose sand, soil, and surface debris in the first contamination reduction stage.
4. Hot Alkaline Washing: Flakes are immersed in a heated wash tank (60–80°C) with alkaline cleaning solution that dissolves chemical residues, oils, and stubborn contamination from flake surfaces.
5. Friction Washing: High-speed friction scrubbers intensively clean flake surfaces, removing embedded particles and residual contaminants that survive the hot washing stage.
6. Float-Sink Separation: Water separation tanks remove sand, stones, and heavy contaminants that sink, while clean PP flakes float and are collected for further processing.
7. Rinsing & Centrifugal Dewatering: Clean PP flakes are thoroughly rinsed with fresh water to remove residual cleaning solution, then centrifugally dewatered to reduce surface moisture.
8. Thermal Drying: A hot air drying system eliminates residual moisture, producing dry PP flakes with moisture content below 1%.
9. Pelletizing (Optional): Dried PP flakes are fed into a single-screw or twin-screw extruder, melted, filtered, and extruded into uniform recycled PP pellets.
10. Screening & Packaging: Pellets or flakes are screened to remove oversized particles, then conveyed to storage silos or bagged for sale or further manufacturing use.