PLA Biodegradable Film Pelletizer

Product Overview

The PLA biodegradable film pelletizer is a specialized granulation machine designed for the recycling and regeneration of waste films. Equipped with an advanced densifier–pelletizing feed system, it can directly process loose, bulk rolls or bales of waste film without requiring prior shredding. The equipment employs an integrated densifier–single-screw extrusion process: after compacting and preheating the fluffy waste film, it efficiently converts 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. Standard models offer capacities ranging from 100 to 1,500 kg/h, and can be customized according to customer production needs, making this machine a core piece of equipment for plastic recycling and processing enterprises seeking to boost productivity and reduce costs.

Technical Principle

This pelletizer utilizes an integrated densifier–single-screw extrusion process to achieve efficient recycling and regeneration of waste films. The specific workflow is as follows: first, the waste film enters the densifier (pelletizing hopper), where high-speed rotating blades cut and shred the material. During rapid friction, the material generates heat, causing the fluffy film to contract and compact into uniform pellets. Once the bulk density increases by 3–5 times, the pellets are fed steadily into the extrusion screw. Subsequently, the material undergoes staged heating and shear action within the screw to achieve complete melting and plasticization. Multi-stage filters effectively remove impurities while simultaneously venting gases and moisture. Finally, after water cooling and shaping, the material is cut into pellets, yielding high-quality PLA biodegradable film recycled pellets. This entire process eliminates the need for preliminary shredding, operates fully automatically, and ensures both production efficiency and pellet quality.

Performance Parameters

1. Standard model capacity: 100–1,500 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. Screw and barrel materials: 38CrMoAlA, bimetallic alloy, 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 top domestic brands
11. Cutting 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 feed prevents bridging: Featuring a dedicated densifier–pelletizing feed system, it compacts fluffy films into high-density pellets, completely resolving issues of feeding blockages and uneven material distribution found in traditional equipment, ensuring smooth, consistent feeding and uninterrupted production.
2. Self-friction preheating saves energy: Within the densifier, rapid friction generates heat, preheating the material before it enters the extrusion screw. This results in higher plasticization efficiency compared to conventional machines, reducing energy consumption by over 15% per ton processed and significantly lowering operational costs.
3. Eliminates the need for preliminary shredding: Loose rolls or bales of waste film can be fed directly into the machine, eliminating the requirement for additional shredding equipment and labor, reducing staffing by 1–2 operators, simplifying the production process, and cutting equipment and labor expenses.
4. Excellent gas venting and moisture removal: A multi-stage venting and dehumidification design effectively removes moisture and impurities from the material, resulting in finished pellets with moisture content ≤0.3%, bubble-free appearance, and a defect rate kept below 3%, guaranteeing high-quality recycled pellets.
5. Wide capacity range: Standard models offer capacities from 100 kg/h to 1,500 kg/h, customizable to meet specific customer production needs, enabling up to 36 tons per day under continuous operation, suitable for businesses of various scales.

Core Value of the Product

1. Simplifies the production process, eliminates separate shredding steps, reduces labor input, and lowers operating costs.
2. Self-friction preheating enhances plasticization efficiency, saving over 15% energy per ton processed and delivering substantial long-term energy cost savings.
3. High-capacity, custom-designed solutions cater to businesses of all sizes, with daily output reaching up to 36 tons.
4. Low defect rates ensure high-quality recycled pellets; production scraps can be 100% recycled back into the process, improving resource utilization.
5. Fully automated operation minimizes human intervention, reduces the risk of operator error, and ensures stable production.

Target Customer Groups

Plastic film manufacturers, waste plastic recycling plants, packaging material companies, renewable resource firms, and any enterprise with demand for PLA biodegradable film recycling and regeneration—whether small-scale recycling facilities or large-scale resource processing enterprises—can select appropriate standard models or customize exclusive equipment based on their specific production requirements.

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. It excels particularly in handling PLA biodegradable films. Whether it’s factory scrap from whole rolls or collected bales of used films, they can all be fed directly into the machine without prior shredding, making it ideal for batch production across diverse recycling scenarios.

Solutions to Industry Pain Points

1. Addresses the issue of loose film feeding causing bridging and uneven distribution in traditional pelletizers: With its densifier–pelletizing feed system, the machine compacts fluffy films into high-density pellets, ensuring smooth, consistent feeding and uninterrupted production.
2. Solves the problem of increased processes and labor required for preliminary shredding: The equipment can handle whole rolls or bales directly, eliminating the need for separate shredding steps, reducing staffing by 1–2 operators, and cutting equipment and labor costs.
3. Tackles insufficient plasticization and low production capacity: The material self-heats through friction inside the densifier, leading to higher plasticization efficiency once it enters the screw. Combined with a large-diameter screw and high-power main unit, production capacity is dramatically boosted, allowing up to 36 tons per day under continuous operation.
4. Resolves the issue of excessive air bubbles and high defect rates in wet-material pellets: 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 kept below 3%. Additionally, production scraps can be 100% recycled back into the process, minimizing resource waste.

Frequently Asked Questions (FAQ)

Q1: What types of waste films can this PLA biodegradable film pelletizer 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, with particularly outstanding performance in recycling PLA biodegradable films.
Q2: Does the equipment require preliminary shredding of waste films?
A: No, the machine is equipped with a densifier–pelletizing feed system that can directly process loose rolls or bales of waste film, eliminating the need for preliminary shredding and simplifying the production process.
Q3: What is the equipment’s capacity range, and can it be customized?
A: Standard models offer capacities from 100 to 1,500 kg/h, and exclusive custom models can be tailored to meet specific customer production needs, accommodating businesses of varying scales.
Q4: What is the quality of the finished pellets?
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%, meeting the standards for high-quality recycled pellets.
Q5: 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, ensuring stable operation and comprehensive after-sales service.