Shrink Film Recycling Granulator

Product Overview

The shrink film recycling granulator is a specialized thin-film regeneration and granulation machine equipped with a densifier–pelletizing feeding system. It is a custom-made product without a fixed price, tailored to meet the customer’s production capacity requirements. Designed specifically for processing bulky waste films, this equipment can compact and preheat agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, heat-shrink films, and other types of waste films, ultimately converting them efficiently into high-quality recycled pellets. It effectively addresses common industry pain points such as material bridging in feeders, uneven feeding, and the need for prior shredding, providing an efficient waste film recycling solution for plastic film manufacturers, used-plastic recycling plants, packaging material companies, and renewable resource enterprises.

Technical Principle

This equipment employs an integrated process combining a densifier and a single-screw extruder, enabling fully automated waste film recycling and granulation. Used films first enter the densifier (pelletizing barrel), where high-speed rotating and stationary blades cut and crush the material. The rapid friction within the barrel generates heat, causing the originally bulky films to contract and compact into uniform pellets, significantly increasing their bulk density before being smoothly fed into the extrusion screw. Subsequently, the material enters the extrusion stage, undergoing segmented heating and screw shearing to melt and plasticize it. After passing through multi-stage filters to remove impurities and vent moisture, the final product is water-cooled, shaped, and cut into pellets, yielding stable-quality recycled plastic granules. The entire process eliminates the need for prior shredding; instead, self-frictional preheating enhances plasticization efficiency while ensuring that the pellet moisture content meets standards and remains free of air bubbles or defects.

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 precision: 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. Pelletizing methods: die-face cutting, strand-cutting
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
16. Trademark/brand: PURUI
17. Place of origin: NANTONG

Core Advantages

1. Densifier feeding prevents bridging: Featuring a proprietary densifier–pelletizing feeding system, it can directly process whole rolls or bundles of film. After compaction, the bulk density increases by 3–5 times, completely resolving issues of material bridging, slippage, and uneven feeding associated with bulky films. This ensures stable, uniform feeding and sustained, efficient operation.
2. Self-frictional preheating saves energy: By relying on the heat generated through high-speed friction, the material achieves self-heating preheating without additional equipment, resulting in higher plasticization efficiency. Compared to traditional machines, this approach reduces electricity consumption per ton processed by more than 15%, significantly lowering production energy costs.
3. Eliminates the need for prior shredding: The densifier can directly cut and crush whole rolls or bundles of film, removing the requirement for separate shredding equipment and manual labor. This cuts down on 1–2 operators, reduces process costs and labor input, and shortens preparation time.
4. Excellent degassing and dehumidification: With a multi-stage degassing and dehumidification design, moisture is effectively removed from the material, ensuring that finished pellets have a moisture content of ≤0.3%, no air bubbles, excellent appearance, and a defective rate kept below 3%, thus guaranteeing consistent quality of recycled pellets.
5. High-capacity, stable operation: Standard models offer capacities ranging from 100 to 1500 kg/h, enabling up to 36 tons per day under continuous 24-hour operation. Additionally, edge scraps can be 100% recycled back into the process, boosting material utilization and meeting the production needs of businesses of various scales.

Core Value of the Product

1. Simplifies the production process, eliminates the shredding step, reduces labor input, and lowers operational costs.
2. Self-frictional preheating technology boosts plasticization efficiency, saving over 15% electricity per ton processed and achieving energy conservation.
3. High-capacity, stable output—up to 36 tons per day—meets the demands of large-scale production.
4. Produces high-quality recycled pellets with a defective rate of ≤3%, satisfying the raw material standards of downstream plastic manufacturers.
5. Enables 100% closed-loop recycling of production scraps, maximizing material utilization and resource circulation.

Target Customer Groups

Plastic film manufacturers, used-plastic recycling plants, packaging material companies, and renewable resource enterprises—especially those with large-scale waste film recycling needs who seek to reduce production energy and labor costs—can customize suitable models based on their specific production requirements.

Application Scenarios

This equipment is applicable to the recycling and regeneration of various types of plastic waste films, including agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, heat-shrink films, and more. Whether dealing with scattered scraps or bulk rolls and bundles, the machine can handle them directly, producing high-quality recycled pellets that can be reused in plastic film and packaging production, thus realizing resource circularity.

Solutions to Industry Pain Points

1. Addresses issues of material bridging, slippage, and uneven feeding caused by bulky films: Through the densifier–pelletizing feeding system, bulky films are compacted into high-density pellets, which are then smoothly fed into the extrusion screw, ensuring uniform and stable feeding and preventing equipment downtime or production fluctuations due to feeding problems.
2. Solves the problem of increased processes and labor required for prior shredding: Equipped with high-speed rotating and stationary blades, the densifier can directly process whole rolls or bundles of film, eliminating the need for separate shredding equipment and manual labor, reducing independent shredding steps, cutting 1–2 operators, and lowering process costs.
3. Tackles low productivity and insufficient plasticization: Self-frictional preheating raises the initial temperature, combined with screw shearing and melting plasticization, dramatically improving plasticization efficiency. The equipment’s capacity ranges from 100 to 1500 kg/h, allowing up to 36 tons per day under continuous 24-hour operation, meeting the demands of large-scale production.
4. Resolves issues of excessive air bubbles and high defect rates in wet-material granulation: A multi-stage degassing and dehumidification design effectively removes moisture from the material, ensuring that finished pellets have a moisture content of ≤0.3%, no air bubbles, excellent appearance, and a defective rate controlled below 3%, thereby guaranteeing that recycled pellets meet downstream production standards.

Frequently Asked Questions (FAQ)

Q1: Does this shrink film recycling granulator require prior shredding of waste films?
A: No, the equipment’s built-in densifier can directly process whole rolls or bundles of film, using high-speed rotating and stationary blades to cut and crush the material, eliminating the need for separate shredding and reducing labor input.
Q2: What is the equipment’s capacity range? Can models with different capacities be customized?
A: Standard models offer capacities from 100 to 1500 kg/h. As a custom-made product, this equipment is tailored to meet the customer’s specific production needs, accommodating varying scales of operation.
Q3: What is the quality of the finished pellets? How are moisture content and defect rates guaranteed?
A: Finished pellets have a moisture content of ≤0.3%, filtered to 80–120 mesh, with excellent appearance and no air bubbles. Defective rates are kept below 3%, and production scraps can be 100% recycled back into the process, ensuring both material utilization and consistent pellet quality.
Q4: What are the delivery and warranty periods?
A: Delivery takes 70–80 working days, and the warranty lasts 13 months from the bill of lading date. Core components are sourced from top-tier brands like Siemens, ABB, and NSK, ensuring stable equipment operation.
Q5: What energy-saving advantages does this equipment offer compared to traditional granulators?
A: By utilizing self-frictional preheating technology, the equipment eliminates the need for additional preheating devices, achieving higher plasticization efficiency and saving over 15% electricity per ton processed, significantly reducing production energy costs.