Purui Trash Bag Film Granulator

Product Overview

The Purui trash bag film granulator is a specialized film recycling and granulation machine equipped with a densifier-based pelletizing feeding system. It is designed specifically for the recycling and regeneration of various types of waste plastic films and can be customized according to customers’ production requirements. The equipment can directly process whole rolls or bales of loose waste film without prior shredding. Through the densifier’s compaction and preheating process, it efficiently converts the material into high-quality recycled pellets with a moisture content of ≤0.3% and excellent appearance. Standard models offer capacities ranging from 100 to 1500 kg/h, meeting the production needs of recycling and processing enterprises of different scales. This product is manufactured under the PURUI brand, originating in NANTONG, with core components sourced from internationally renowned brands, ensuring stable and reliable performance. It provides an efficient, energy-saving solution for the plastic recycling industry.

Technical Principle

This granulator employs an integrated process combining a densifier and a single-screw extruder. The entire recycling workflow eliminates the need for additional shredding steps, enabling efficient conversion of waste film from raw material to finished pellets. Specifically, the process begins with waste film entering the densifier (pelletizing hopper), where high-speed rotating blades cut and shred the material. Frictional heat generated during this process raises the temperature, causing the originally fluffy film to shrink and compact into uniform pellets. After the bulk density increases by 3–5 times, the pellets are smoothly fed into the extrusion screw. In the extrusion stage, the material undergoes segmented heating and screw shearing to achieve melting and plasticization. Subsequently, multi-stage filtration removes impurities, while venting and dehumidification eliminate residual moisture. Finally, after water cooling and shaping, the material is cut into pellets, yielding high-quality recycled plastic granules.

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 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 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

Core Advantages

1. Densifier feeding prevents bridging: The densified pellets exhibit significantly increased bulk density, eliminating issues such as air gaps or slippage when fed into the extrusion screw. This ensures more uniform feeding, maintaining stable and continuous production and avoiding fluctuations caused by uneven feed.
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. Once entering the extrusion stage, plasticization efficiency is higher, reducing electricity consumption by over 15% per ton processed and substantially lowering overall production costs.
3. Eliminates the need for preliminary shredding: The equipment can directly accept whole rolls or bales of waste film without prior shredding, reducing labor by 1–2 operators, cutting labor costs and processing time, and boosting overall productivity.
4. Excellent venting and dehumidification: With a multi-stage venting and dehumidification design, moisture and impurities are effectively removed, resulting in finished pellets with a moisture content of ≤0.3%, free of bubbles and with excellent appearance. Defective rates can be kept below 3%, meeting the requirements for high-quality recycled pellets.
5. Reliable quality of core components: Key parts such as screws, motors, bearings, and inverters are sourced from internationally recognized brands like Siemens, ABB, or domestic first-tier manufacturers, ensuring strong operational stability, long service life, and a warranty period of up to 13 months, safeguarding continuous enterprise production.

Core Value of the Product

1. Simplifies the production process, eliminates shredding steps, reduces labor input, and lowers operating costs.
2. Energy-saving self-friction preheating design cuts electricity consumption by over 15% per ton processed, saving substantial energy expenses over time.
3. High-capacity, stable output—up to 36 tons per day when running 24 hours—meets the demands of large-scale recycling and processing operations.
4. Produces high-quality recycled pellets with defective rates kept below 3%; production scraps can be fully recycled, improving raw material utilization.
5. Customizable production options allow adjustment of machine models based on customer capacity needs, adapting to enterprises of varying sizes.

Target Customer Groups

Plastic film manufacturing plants, waste plastic recycling facilities, packaging material companies, and resource recovery firms—all have a need to recycle and regenerate used plastic films. This granulator helps them efficiently process various types of waste film, enabling resource circulation and reducing raw material costs.

Application Scenarios

This equipment is suitable for recycling and regenerating all kinds of waste plastic films, including agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, heat-shrink films, and other common types of waste. Whether it’s whole rolls of industrial waste film or scattered courier plastic bags, they can all be directly fed into the machine for processing, transforming into high-quality recycled plastic pellets. These pellets can then be reused to produce new plastic films, plastic products, and more, achieving true resource circularity.

Solutions to Industry Pain Points

1. Addresses the issue of loose film feeding causing air gaps and uneven feeding: The densifier’s pelletizing feeding system compacts fluffy film into denser pellets, ensuring uniform and stable feeding, thus preventing production interruptions or capacity fluctuations.
2. Solves the problem of needing preliminary shredding, which adds extra steps and labor: The equipment can directly handle whole rolls or bales of film, eliminating separate shredding processes, reducing labor by 1–2 operators, shortening the production workflow, and cutting labor and time costs.
3. Tackles the challenge of insufficient plasticization and low capacity: After self-friction preheating, the material enters the extrusion stage with greatly improved plasticization efficiency. Combined with a stable feeding system, the machine can deliver capacities ranging from 100 to 1500 kg/h, producing up to 36 tons per day when running 24 hours, meeting the demands of large-scale production.
4. Resolves the issue of bubble-filled pellets and high defect rates: Equipped with a multi-stage venting and dehumidification system, the machine effectively removes moisture from the material, resulting in finished pellets with a moisture content of ≤0.3%, free of bubbles and with excellent appearance. Defective rates can be kept below 3%, enhancing product quality and raw material utilization.

Frequently Asked Questions (FAQ)

Q1: Does this trash bag film granulator require preliminary shredding of waste film?
A: No, the equipment is equipped with a densifier-based pelletizing feeding system that can directly process whole rolls or bales of loose waste film, eliminating the need for preliminary shredding and reducing labor and production time.
Q2: What is the capacity range of this equipment? Can it be customized?
A: Standard models offer capacities from 100 to 1500 kg/h, and customization is available to meet specific customer production needs, accommodating enterprises of various sizes.
Q3: How is the quality of the finished pellets? What is the defect rate?
A: Finished pellets have a moisture content of ≤0.3%, are free of bubbles and boast excellent appearance, with defect rates kept below 3%. Production scraps can also be fully recycled, improving raw material utilization.
Q4: Which brands are used for the core components? How long is the warranty?
A: Motors, bearings, inverters, and other key components are sourced from internationally renowned brands like Siemens, ABB, or domestic first-tier manufacturers. The equipment comes with a 13-month warranty from the bill of lading date, ensuring stable enterprise production.
Q5: What is the delivery time?
A: Delivery typically takes 70–80 working days, adjustable based on customization requirements.