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, high-purity flakes ready for pelletizing or direct sale. 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, screw press dewatering, and thermal drying into a continuous production process. Output flakes meet quality requirements for use in downstream pelletizing, film blowing, and plastic manufacturing applications.

Available in standard capacity configurations from 300 to 2,000 kg/h, with custom-engineered solutions available for higher throughput requirements. All structural components are manufactured from S.S 304 stainless steel. Closed-loop water recycling systems minimize operating costs and align with 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 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 (60–80°C), 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, removing heavier contaminants simultaneously.
• Two-Stage Mechanical Dewatering: Centrifugal dryer followed by screw press reduces moisture to below 12% before thermal drying, significantly lowering energy consumption.
• Thermal Drying to <5% 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: Smart modular design supports flexible configuration for diverse feedstocks and capacity expansion without full line replacement.
• Automated Sorting: Magnetic separator removes ferrous and non-ferrous metal debris from incoming film waste; optional optical sorting available for mixed-material streams.
• S.S 304 Stainless Steel Construction: All wetted components and structural frames are fabricated from S.S 304 stainless steel for long-term corrosion resistance.
• Certified to International Standards: CE, ISO9001:2008, QS, and GMP certified — meeting the compliance requirements of European and international buyers.

Technical Data

Exact configuration depends on feedstock contamination level, facility layout, and downstream requirements. Contact SUHUI for a customized technical proposal.

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 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 pre-wash tank where agitated 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. Hot Washing (Optional): For film containing oils, grease, or stubborn chemical residues, a hot wash tank at 60–80°C dissolves contamination that cold washing cannot remove. Recommended for agricultural and post-consumer film.
6. 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.
7. Rinsing: Clean flakes are thoroughly rinsed in a fresh water rinse tank to remove residual detergent and chemical cleaning solution.
8. Two-Stage Mechanical Dewatering: A centrifugal dryer followed by a screw press reduces flake moisture to below 12% before the thermal drying stage, significantly lowering the thermal energy load.
9. Thermal Drying: A hot air drying system with cyclone separator reduces residual moisture to below 5%, producing dry PP/PE flakes ready for pelletizing or direct packaging.
10. Pelletizing (Optional): Dried flakes are fed into a pelletizing line, melted, filtered, and extruded into uniform recycled PP/PE pellets.
11. 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 ferrous and non-ferrous metals, sand, oil, glue, and paper labels before processing.

What are the available capacity options?

The SUHUI PP PE soft film recycling washing line is available in five standard model configurations: SHW300 (250–300 kg/h), SHW500 (400–500 kg/h), SHW1000 (800–1,000 kg/h), SHW1500 (1,250–1,500 kg/h), and SHW2000 (1,700–2,000 kg/h). Space requirements range from 29m × 10m × 5m for the SHW300 to 90m × 15m × 6m for the SHW2000, with installation power from 195 kW to 760 kW. Contact SUHUI for a configuration recommendation 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 progressive cleaning sequence: pre-washing in agitated water removes loose sand and soil; high-speed friction scrubbers dislodge embedded adhesives, inks, and organic contaminants (with optional detergent for heavily soiled feedstock); optional hot washing at 60–80°C dissolves oils and chemical residues; and a final fresh water rinsing stage removes residual cleaning solution. This sequence ensures output flakes meet quality standards for downstream pelletizing.

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 simultaneously 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?

Drying is handled in two stages: mechanical dewatering (centrifugal dryer + screw press) first reduces moisture to below 12%, significantly lowering the thermal energy load. A subsequent hot air thermal drying system with cyclone separator then reduces final residual moisture to below 5%, producing 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 all washing stages. This minimizes fresh water consumption and reduces wastewater discharge, lowering operational costs and supporting compliance with environmental regulations.