PP PE Soft Film Recycling Washing Line

The SUHUI PP PE soft film recycling washing line is a fully automated system designed to recycle polypropylene (PP) and polyethylene (PE) plastic film waste into clean, premium-quality recycled pellets. It efficiently processes diverse film types including agricultural mulch film, greenhouse covers, stretch wrap, post-consumer packaging film, and industrial plastic scraps — whether loose or baled.

The line integrates automated feeding, shredding, multi-stage hot washing, friction scrubbing, density separation, centrifugal dewatering, and thermal drying into a continuous production process. Output pellets meet quality requirements for use in packaging film, agricultural products, and plastic manufacturing applications.

Available in three standard capacity configurations (500, 1,000, and 2,000 kg/h), with custom-engineered solutions available for higher throughput requirements. Closed-loop water recycling and energy recovery systems minimize operating costs and align with global environmental compliance standards.

Key Features of SUHUI PP PE Soft Film Recycling Washing Line

• Comprehensive Film Compatibility: Processes PP and PE films including agricultural film, greenhouse covers, stretch wrap, packaging film, and industrial plastic scraps from loose or baled feedstock.
• Anti-Tangle Shredding System: Specially designed shredder/granulator cuts film into 10–20 mm flakes while preventing tangling and jamming during size reduction.
• Multi-Stage Hot Washing: Sequential pre-wash, hot wash, and friction wash stages progressively remove dirt, sand, adhesives, inks, and organic contaminants from film flakes.
• PP/PE Density Separation: Float-sink separation tank uses water or saline solution to separate PP from PE flakes by density difference, enabling material-specific output streams.
• High-Speed Centrifugal Dewatering: Removes over 90% of surface moisture before thermal drying, significantly reducing drying energy consumption.
• Thermal Drying to <1% Moisture: Hot air drying system produces dry flakes ready for pelletizing or direct packaging and sale.
• Closed-Loop Water Treatment: Integrated filtration and water recirculation system reduces fresh water consumption and wastewater discharge.
• Scalable Modular Design: Modular components support flexible configuration for diverse feedstocks and capacity expansion without full line replacement.
• Automated Sorting: Magnetic and optional optical sorting stations remove non-plastic debris including metals and paper from incoming film waste.

Technical Data

PP PE Soft Film Recycling Washing Process

1. Material Feeding & Pre-Sorting: Loose or baled PP/PE film is fed onto the conveyor belt. A manual or automated sorting station removes non-plastic debris including metals (via magnetic separator) and paper.
2. Shredding / Granulating: Film waste passes through a specialized shredder or granulator that cuts it into 10–20 mm flakes, preventing tangling and ensuring consistent feeding into downstream washing stages.
3. Pre-Washing: Shredded flakes enter a hot wash tank where agitated heated water removes loose sand, soil, and surface contaminants in the initial cleaning stage.
4. Friction Washing: High-speed friction scrubbers intensively clean flake surfaces, dislodging embedded adhesives, inks, and contaminants. Detergent can be added for heavily contaminated feedstock.
5. Density Separation: Flakes pass through a float-sink separation tank where PP (density ~0.91 g/cm³) and PE (density ~0.95 g/cm³) are separated from heavier contaminants. Saline solution can enhance separation precision.
6. Rinsing: Clean flakes are thoroughly rinsed in a fresh water rinse tank to remove residual detergent and chemical cleaning solution.
7. Centrifugal Dewatering: A centrifugal dryer spins flakes at high speed, removing over 90% of surface moisture before the thermal drying stage.
8. Thermal Drying: A hot air drying system reduces residual moisture to below 1%, producing dry PP/PE flakes ready for pelletizing or direct packaging.
9. Pelletizing (Optional): Dried flakes are fed into a single-screw extruder or film squeezer granulator, melted, filtered, and extruded into uniform recycled PP/PE pellets.
10. Water Treatment & Recycling: Process water is continuously filtered and recirculated through the closed-loop water treatment system, minimizing fresh water consumption and wastewater output.

Frequently Asked Questions

What types of plastic film can the SUHUI PP PE soft film recycling washing line process?

The SUHUI PP PE soft film washing line processes a wide range of polypropylene (PP) and polyethylene (PE) film waste, including agricultural mulch film, greenhouse covers, stretch wrap, post-consumer packaging film, and industrial plastic scraps. The system accepts both loose and baled feedstock, with automated sorting to remove non-plastic contaminants such as metals and paper before processing.

What are the available capacity options for the PP PE soft film washing line?

The line is available in three standard configurations: 500 kg/h (Model SHW PE 500, 150 kW, 120 m²), 1,000 kg/h (Model SHW PE 1000, 190 kW, 260 m²), and 2,000 kg/h (Model SHW PE 2000, 290 kW, 380 m²). Custom-engineered solutions are available for higher throughput requirements. SUHUI engineers can recommend the appropriate model based on your feedstock volume and facility layout.

How does the multi-stage washing process remove contaminants from film waste?

The washing system uses a three-stage process: pre-washing in agitated hot water removes loose sand and soil; high-speed friction scrubbers dislodge embedded adhesives, inks, and organic contaminants (with optional detergent for heavily soiled feedstock); and a final fresh water rinsing stage removes residual cleaning solution. This progressive cleaning sequence ensures output flakes meet quality standards for reuse in packaging film and agricultural products.

Can the line automatically separate PP film from PE film?

Yes. The line includes a float-sink density separation tank that separates PP flakes (density ~0.91 g/cm³) from PE flakes (density ~0.95 g/cm³) and removes heavier contaminants. A saline solution can be used to enhance separation precision, enabling material-specific output streams for downstream pelletizing or direct sale.

What moisture content does the output achieve, and how is drying handled?

After centrifugal dewatering — which removes over 90% of surface moisture — the flakes pass through a hot air thermal drying system that reduces residual moisture to below 1%. This two-stage drying approach significantly reduces energy consumption compared to thermal-only drying, while producing dry flakes ready for pelletizing or direct packaging.

Does the washing line include a water recycling system?

Yes. The line integrates a closed-loop water treatment system that continuously filters and recirculates process water throughout the washing stages. This minimizes fresh water consumption and reduces wastewater discharge, lowering operational costs and supporting compliance with environmental regulations.