Express Bag Film Granulator

Product Overview

The express bag film granulator is a specialized film recycling and granulation machine equipped with a densifier–pelletizing feeding system. It is designed specifically for the recycling and regeneration of various used plastic films and is a customizable product without a fixed price, tailored to meet each customer’s production requirements. This equipment can directly process whole rolls or bales of loose waste film without prior shredding. Through a compaction and preheating process, it efficiently converts the material into high-quality recycled pellets with a moisture content of ≤0.3% and excellent appearance. It is widely suitable for recycling and processing various types of waste films, including express delivery plastic bags, agricultural greenhouse films, and packaging stretch films, providing plastic recycling companies with an efficient, energy-saving regeneration solution.

Technical Principle

This equipment employs an integrated process combining a densifier and a single-screw extruder to achieve fully automated processing—from recovered raw materials to finished pellets. First, the waste film enters the densifier (pelletizing hopper), where high-speed rotating blades cut and crush the material. Friction generated during rapid movement produces heat, naturally raising the temperature. The originally fluffy film contracts and compacts into uniform pellets, increasing its bulk density by 3–5 times before being fed steadily into the extrusion screw. Subsequently, the material undergoes staged heating and screw shearing to complete melting and plasticization, followed by multi-stage filtration to remove impurities while simultaneously venting air and moisture. Finally, water cooling and pelletizing yield high-quality recycled plastic pellets. The entire process eliminates the need for additional crushing equipment, simplifying the production flow while enhancing material processing efficiency.

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 factor: 3–5 times
5. Finished pellet moisture content: ≤0.3%
6. Filtration accuracy: 80–120 mesh
7. Trademark/Brand: PURUI
8. Place of origin: NANTONG
9. Screw and barrel material: 38CrMoAlA alloy, bimetallic construction, nitrogen-treated
10. Heating method: electric heating, electromagnetic heating
11. Heater material: cast aluminum, cast copper, mica, ceramic heaters
12. Motor brand: Siemens, ABB, Weg, or leading domestic brands
13. Pelletizing method: die-face cutting, strand-cutting
14. Bearing brand: NSK, SKF, INA, FAG, or top domestic brands
15. Inverter brand: ABB, FUJI, Delta, Siemens
16. Delivery time: 70–80 working days
17. Warranty period: 13 months from the bill of lading date

Core Advantages

1. Densifier feeding prevents bridging: Equipped with a dedicated densifier–pelletizing feeding system, this machine significantly increases material bulk density, resolving issues of loose film feeding getting stuck or slipping, ensuring uniform and stable feeding to maintain continuous production.
2. Self-friction preheating saves energy: The material achieves self-heating through high-speed friction within the densifier, eliminating the need for additional preheating equipment. This not only boosts plasticization efficiency but also substantially reduces energy consumption—saving over 15% per ton processed.
3. Eliminates the need for preliminary shredding: Whole rolls or bales of waste film can be fed directly, removing the requirement for separate shredding equipment, thereby reducing production steps and saving labor costs equivalent to 1–2 operators.
4. Excellent venting and dehumidification: Multi-stage venting and dehumidification effectively removes moisture and impurities, resulting in finished pellets with moisture content ≤0.3%, bubble-free appearance, and a defect rate kept below 3%.
5. Customizable capacity: Models can be tailored to meet specific production needs, ranging from 100 to 1500 kg/h, accommodating businesses of varying scales and enabling up to 36 tons of daily output under 24-hour operation.

Core Product Value

1. Simplifies the production process: By eliminating the separate shredding step, reducing manual input, and cutting down on time and labor costs, overall production efficiency is enhanced.
2. Highly efficient and energy-saving: The self-friction preheating design improves plasticization efficiency, saving more than 15% energy per ton processed and significantly lowering long-term operating costs.
3. Produces high-quality pellets: Strict control over moisture and impurity levels ensures bubble-free, high-quality pellets with a low defect rate, ready for direct reuse in new plastic products.
4. Enables closed-loop resource recycling: Scrap generated during production can be 100% recycled, maximizing resource utilization, boosting economic benefits, and meeting environmental standards.
5. Customizable capacity: Models can be tailored to match customers’ actual production needs, flexibly adapting to diverse recycling scenarios and satisfying varied production demands.

Target Customer Groups

This equipment primarily serves plastic film manufacturers, used-plastic recycling plants, packaging material companies, and resource regeneration enterprises. It provides professional granulation solutions for businesses involved in plastic film recycling and regeneration, helping them turn waste plastics into valuable resources while improving production efficiency and environmental sustainability.

Application Scenarios

The express bag film granulator is suitable for a wide range of used plastic film recycling and regeneration applications, handling materials such as agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, express delivery plastic bags, heat-shrink films, and other types of waste films. Whether for batch processing at small recycling facilities or large-scale operations at major resource regeneration companies, this equipment delivers stable performance, efficiently transforming loose waste films into high-quality recycled plastic pellets and promoting circular resource utilization.

Solutions to Industry Pain Points

1. Addresses issues of loose film feeding getting stuck or uneven feeding: The densifier–pelletizing feeding system compacts fluffy film into denser pellets, ensuring uniform and stable feeding and preventing production interruptions or capacity fluctuations caused by uneven feeding.
2. Solves the problem of increased processes and labor due to pre-shredding: The equipment can handle whole rolls or bales directly, eliminating the need for separate shredding equipment, saving 1–2 operators, and reducing both labor and equipment investment costs.
3. Tackles insufficient plasticization and low productivity: Material self-heats through friction inside the densifier, raising its temperature ahead of entering the extrusion screw, where plasticization becomes more thorough. Combined with the single-screw extrusion process, this significantly boosts capacity, with standard models reaching up to 1500 kg/h and daily output up to 36 tons under 24-hour operation.
4. Resolves problems of bubbly pellets and high defect rates: Multi-stage venting and dehumidification, along with high-precision filtration, effectively remove moisture and impurities, achieving finished pellets with moisture content ≤0.3% and a defect rate kept below 3%, ensuring consistent pellet quality.

Frequently Asked Questions (FAQ)

Q1: What types of used plastic films can this express bag film granulator process?
A: This equipment handles agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, express delivery plastic bags, heat-shrink films, and other types of used plastic films. No prior shredding is required; whole rolls or bales can be fed directly.
Q2: What is the equipment’s capacity range, and does it support customization?
A: Standard models have capacities ranging from 100 to 1500 kg/h. As a customized product, models can be tailored to meet specific production needs, accommodating businesses of different sizes.
Q3: How does the equipment perform in terms of energy consumption? What are its energy-saving advantages compared to traditional granulators?
A: Material self-heats through high-speed friction inside the densifier, eliminating the need for additional preheating equipment. Plasticization efficiency is higher, saving over 15% energy per ton processed and significantly reducing overall production energy costs.
Q4: What guarantees ensure the quality of the finished pellets?
A: The equipment features multi-stage filtration to remove impurities and a venting system to eliminate moisture. Finished pellets have moisture content ≤0.3%, filtration accuracy of 80–120 mesh, bubble-free appearance, and a defect rate kept below 3%. Additionally, scrap generated during production can be 100% recycled.
Q5: What are the delivery and warranty periods?
A: Delivery takes 70–80 working days, with a 13-month warranty starting from the bill of lading date. Core components use top international or premium domestic brands, ensuring long-term stable operation.