Understanding Waste BOPP Film Recycling

Overview: 

Biaxially Oriented Polypropylene (BOPP) is widely used in food packaging, adhesive tapes, and labels due to its high tensile strength and transparency. However, its lightweight nature, high ink coverage, and elasticity make it challenging to process.

• Key Challenges: Heavy ink contamination, low bulk density leading to feeding blockage, and thermal degradation during extrusion.

• Our Solution: Integrated recycling technology featuring heavy-duty crushing, friction washing, compact feeding, and multi-stage degassing pelletizing.

  Learn more about our [Industrial Plastic Shredders & Crushers] to handle heavy film rolls.

Complete Step-by-Step BOPP Recycling Process:

• Size Reduction & Crushing: Heavy-duty shredders cut large film rolls, loose film, and printed bags into uniform flakes.

• Washing & Friction Drying: Removes surface dirt, inks, and adhesives, drying the flakes to a moisture level below 1%.

• Compacting & Force Feeding: The integrated cutter-compactor pre-heats and compacts light BOPP flakes, feeding them continuously into the extruder.

• Degassing Extrusion: Multi-vent vacuum degassing removes moisture and volatile inks to prevent bubbles in final pellets.

• Pelletizing & Cooling: High-speed water-ring or underwater pelletizing creates uniform, high-density PP granules.

  Check out our full line of [BOPP Cutter Compactor Granulators] designed for light packaging film.

Technical Specifications:

Key Features & Advantages:

• Superior Degassing: Specialized screw design eliminates foaming caused by printed inks.

• Energy Savings: Integrated cutter-compactor saves up to 15%-20% electricity compared to conventional pre-heaters.

• Stable Output: Custom L/D ratio ensures smooth melting despite BOPP's high crystallinity.

  
  

Applications of Recycled BOPP Granules:

• Highlighting end-uses attracts buyers looking for recycled material processing:

  Injection molding (crates, buckets, automotive parts)

• Pipe and profile extrusion

• Blending into lower-grade film or strapping production 

  Explore our [Plastic Granule Filtration & Screening Equipment] for ultimate purity.

FAQ:

• Q1: How do you handle heavily printed BOPP films?

• A1: We utilize a double vacuum degassing system paired with a high-mesh hydraulic screen changer to flush out ink residue and volatiles smoothly.

• Q2: Can this machine handle both BOPP film rolls and loose scraps?

• A2: Yes, our cutter-compactor is equipped with force-feeding technology that handles both loose film scraps and continuous roll feeding.