Industrial Protective Film Recycling Granulator

Product Overview

The industrial protective film recycling granulator is a specialized thin-film regeneration and granulation device launched by the PURUI brand, originating from Nantong. It is equipped with a densifier–pelletizing feeding system, enabling direct processing of loose, whole rolls or bundles of waste film without prior shredding. The equipment adopts an integrated process combining a densifier and single-screw extrusion, which compacts and preheats the fluffy waste film before efficiently converting it into high-quality recycled pellets. The finished pellets have a moisture content ≤0.3%, filtration accuracy up to 80–120 mesh, and excellent appearance free of air bubbles, meeting the quality requirements of various recycled plastic processing applications. The equipment supports customization, allowing configuration adjustments based on customer production needs; standard models offer capacities ranging from 100 to 1500 kg/h, suitable for recycling and processing scenarios of different scales.

Technical Principle

The industrial protective film recycling granulator employs an integrated core process of densifier plus single-screw extrusion, achieving fully automated waste film recycling and granulation throughout the entire workflow. First, used films are fed directly into the densifier (pelletizing hopper), where high-speed rotating blades cut and crush the material. During rapid friction, the material self-heats, causing the originally fluffy film to shrink and compact into uniform pellets, increasing bulk density by 3–5 times and resolving the issue of feed bridging and slippage common in traditional equipment. Subsequently, the compacted pellets are smoothly fed into the extrusion screw, where staged heating and screw shearing melt and plasticize the material. Multi-stage filtration removes impurities, while venting and dehumidification processes eliminate moisture, ultimately resulting in water-cooled shaping and pelletizing to produce high-quality recycled plastic pellets.

Performance Parameters

1. Standard model capacity: 100–1500 kg/h
2. Screw diameter: φ75–φ200 mm
3. Main motor power: 37–355 kW
4. Bulk density increase: 3–5 times
5. Finished pellet moisture content: ≤0.3%
6. Filtration accuracy: 80–120 mesh
7. Screw and barrel materials: 38CrMoAlA, bimetallic, nitrided treatment
8. Heating methods: electric heating, electromagnetic heating
9. Heater materials: cast aluminum, cast copper, mica, ceramic heaters
10. Motor brands: Siemens, ABB, Weg, or leading domestic brands
11. Cutting methods: die-face pelletizing, strand-cutting pelletizing
12. Bearing brands: NSK, SKF, INA, FAG, or top domestic brands
13. Inverter brands: ABB, FUJI, Delta, Siemens
14. Delivery time: 70–80 working days
15. Warranty period: 13 months from the bill of lading date

Core Advantages

1. Densifier feeding prevents bridging: The unique densifier–pelletizing feeding system compacts fluffy films into high-density pellets, ensuring uniform, non-slipping feed and completely solving the industry’s longstanding problem of uneven feeding in conventional equipment.
2. Self-friction preheating saves energy: Material self-heats through high-speed friction inside the densifier, eliminating the need for additional preheating equipment, boosting plasticization efficiency, reducing electricity consumption by over 15% per ton processed, and significantly lowering production energy costs.
3. Eliminates the need for preliminary shredding: Whole rolls or bundles of waste film can be fed directly, removing the requirement for separate shredding equipment and labor, cutting 1–2 operator positions, streamlining the production process, and reducing labor costs.
4. Excellent venting and dehumidification: A multi-stage venting and dehumidification design effectively removes moisture from the material, resulting in finished pellets with moisture content ≤0.3%, bubble-free appearance, and a defect rate kept below 3%.
5. High-capacity, stable output: Standard models reach peak capacities of up to 1500 kg/h, enabling daily production of up to 36 tons over 24 hours, satisfying large-scale recycling demands, while scrap generated during production can be 100% closed-loop reused, maximizing raw material utilization.

Core Product Value

1. Simplifies the production process, eliminates shredding steps, reduces labor input, and lowers operating costs.
2. Self-friction preheating technology enhances plasticization efficiency, saving over 15% electricity per ton and enabling energy-efficient production.
3. High-stability capacity and low defect rates ensure superior quality of recycled pellets and improved production benefits.
4. 100% closed-loop reuse of scrap maximizes raw material utilization, supporting enterprises in achieving a circular economy.

Target Customer Groups

Plastic film manufacturers, waste plastic recycling plants, packaging material companies, and resource recovery firms—covering all types of businesses with demand for recycling and regenerating waste plastic films. Whether small- or medium-sized recycling facilities or large-scale recycled plastic production bases, customers can select models tailored to their specific production needs.

Application Scenarios

This equipment is suitable for recycling and regenerating various types of waste plastic films, including agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, heat-shrink films, and more. Regardless of film material or form, the densifier system ensures efficient processing, transforming waste into high-quality recycled plastic pellets that can be used to manufacture plastic pipes, plastic products, packaging materials, and other downstream items.

Solutions to Industry Pain Points

1. Addresses issues of bridging and uneven feeding caused by fluffy films: The densifier compacts fluffy films into high-density pellets, ensuring uniform, stable feeding and preventing production fluctuations and equipment malfunctions due to uneven feeding.
2. Solves problems associated with preliminary shredding, extra procedures, and increased labor: The equipment handles whole rolls or bundles directly, eliminating the need for separate shredding operations, reducing 1–2 operator positions, simplifying the production process, and cutting labor and equipment costs.
3. Tackles insufficient plasticization and low productivity: Self-friction preheating raises material temperature in advance, enabling more thorough plasticization once the material enters the extrusion screw, boosting capacity while reducing energy consumption—saving over 15% electricity per ton processed.
4. Resolves issues of excessive air bubbles and high defect rates in wet-material granules: A multi-stage venting and dehumidification design effectively removes moisture, resulting in finished pellets with moisture content ≤0.3%, bubble-free appearance, and a defect rate controlled within 3%, thereby enhancing product quality and market competitiveness.

Common Questions FAQ

Q1: What types of waste films can this granulator process?
A: The equipment can handle agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, heat-shrink films, and other types of waste plastic films. No preliminary shredding is required; whole rolls or bundles can be fed directly.
Q2: What is the equipment’s capacity range? Can it be customized?
A: Standard models offer capacities from 100 to 1500 kg/h, with customization available according to customer production needs. Configurations can be adjusted based on actual production scale to match corresponding capacity and power parameters.
Q3: How long is the product warranty? How long does delivery take?
A: The product warranty lasts 13 months from the bill of lading date, and delivery takes 70–80 working days, subject to adjustment based on specific customization requirements.
Q4: Compared to traditional granulators, what are this equipment’s energy-saving advantages?
A: The equipment uses self-friction preheating technology, eliminating the need for additional preheating equipment, resulting in higher plasticization efficiency and saving over 15% electricity per ton processed. Long-term use can significantly reduce production energy costs.
Q5: What is the quality of the finished pellets? What is the defect rate?
A: Finished pellets have a moisture content ≤0.3%, filtration accuracy of 80–120 mesh, bubble-free appearance, and a defect rate kept below 3%. Scrap generated during production can also be 100% closed-loop reused, further enhancing raw material utilization.