PP Film Granulator

Product Overview

The PP film granulator is a specialized granulation machine designed specifically for the recycling and regeneration of waste PP films. Equipped with an advanced compacting and agglomeration feeding system, it can directly process entire rolls or bundles of loose waste film without requiring prior shredding. Through multiple stages—including compaction and preheating, melting and plasticization, impurity removal, and venting—the equipment efficiently converts waste film into high-quality recycled pellets with a moisture content of ≤0.3% and no air bubbles. Standard models offer capacities ranging from 100 to 1500 kg/h, and can be customized according to customers’ specific production needs, making this machine a core piece of equipment for plastic recycling companies seeking to enhance regeneration efficiency and reduce production costs.

Technical Principle

The PP film granulator employs an integrated process combining a compactor and a single-screw extruder, enabling efficient end-to-end processing of waste film—from raw material collection to finished pellets. First, whole rolls or bundles of waste film are fed directly into the compactor (agglomeration hopper), where high-speed rotating blades cut and crush the material. Frictional heat generated during this process raises the temperature, causing the originally fluffy film to contract and compact into uniform agglomerates, increasing their bulk density by 3–5 times and ensuring smooth feeding without bridging. The compacted agglomerates are then steadily fed into the extrusion screw, where staged heating and screw shearing complete melting and plasticization. A multi-stage filter with 80–120 mesh screens thoroughly removes impurities while simultaneously venting moisture and gases, eliminating residual water and contaminants. Finally, after water-cooling and shaping, the material is cut into uniform recycled pellets either by die-face cutting or strand-cutting. The entire process is compact and highly efficient, eliminating the need for additional shredding steps.

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 alloy or bimetallic materials, nitrogen-treated
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. Compactor feeding prevents bridging: The compacting and agglomeration feeding system transforms fluffy film into high-density pellets, completely resolving issues of unstable feeding and uneven material distribution found in traditional granulators, ensuring continuous and stable operation.
2. Self-friction preheating saves energy: Friction within the compactor generates heat, eliminating the need for additional preheating equipment, thereby improving plasticization efficiency and reducing energy consumption by over 15% per ton processed.
3. Eliminates the need for preliminary shredding: Whole rolls or bundles of waste film can be fed directly into the machine, removing the requirement for separate shredders and manual labor, reducing staffing by 1–2 workers and significantly simplifying the production process while lowering labor and equipment costs.
4. Excellent venting and dehumidification: Multi-stage venting and dehumidification processes keep the final pellet moisture content at ≤0.3%, resulting in bubble-free, high-quality pellets with a defect rate kept below 3%, meeting stringent requirements for premium recycled materials.
5. Customizable capacity: Models can be tailored to meet specific customer production needs, covering a wide capacity range from 100 to 1500 kg/h, suitable for recycling facilities of varying scales.
6. Reliable quality of key components: The screw and barrel are made from nitrogen-treated 38CrMoAlA alloy or bimetallic materials, while motors, bearings, and inverters all use top international or domestic brands, ensuring long service life and high operational stability.

Core Product Value

1. Simplifies the production process: By eliminating the need for separate shredding, reducing labor requirements, and minimizing complexity and operating costs across production stages.
2. Highly efficient and energy-saving: Self-friction preheating boosts plasticization efficiency, saving more than 15% energy per ton processed, and delivering substantial long-term energy cost savings.
3. Increases capacity and product quality: With a maximum daily output of up to 36 tons under 24-hour operation, a defect rate kept below 3%, and 100% closed-loop recycling of production scraps, this machine enhances raw material utilization and overall production efficiency.
4. Adaptable to various types of waste film: Capable of processing agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, shrink wrap, and other types of waste PP film, offering broad applicability.
5. Customizable to meet diverse needs: Models can be tailored to suit different production scales, shortening the investment payback period.

Target Customer Groups

Plastic film manufacturers, waste plastic recycling plants, packaging material companies, and resource recovery enterprises that handle waste PP film—whether small-scale recycling workshops or large-scale resource processing facilities—can select models best suited to their production capacity needs.

Application Scenarios

The PP film granulator is primarily used in various scenarios involving the recycling and regeneration of waste PP film, including post-season recovery of agricultural greenhouse films, recycling of packaging stretch film scraps, reprocessing of discarded courier plastic bags, circular utilization of industrial BOPP/CPP films, and recycling of shrink wrap. By converting these waste PP films into high-quality recycled pellets, they can be reused in the production of new plastic films, injection-molded products, and other applications, achieving resource circulation, reducing raw material procurement costs, and mitigating the environmental impact of plastic waste.

Solutions to Industry Pain Points

1. Addresses the issue of loose film feeding: Traditional granulators often suffer from unstable feeding due to loose film bridging and uneven distribution; the PP film granulator’s compactor system compacts the material into dense agglomerates, ensuring consistent and stable feeding and preventing frequent equipment stoppages that disrupt production efficiency.
2. Eliminates the need for additional shredding: Conventional waste film granulation requires separate shredding equipment, adding extra steps and labor costs; this machine can directly process whole rolls or bundles, bypassing the shredding stage, reducing staffing by 1–2 workers, and cutting both labor and equipment expenses.
3. Boosts plasticization efficiency and production capacity: To address low productivity caused by insufficient plasticization, the machine combines self-friction preheating with screw shear melting, dramatically improving plasticization efficiency and enabling a maximum daily output of up to 36 tons under 24-hour operation, thus expanding enterprise production scale.
4. Solves the problem of pellet bubbles: Traditional wet-material granulation often results in bubbly pellets and high defect rates; this machine uses multi-stage venting and dehumidification to keep the final pellet moisture content at ≤0.3%, completely eliminating bubble formation and keeping the defect rate below 3%, thereby enhancing product quality and market competitiveness.
5. Enables closed-loop recycling of production scraps: Scrap generated during production can be fully reintegrated into the machine for further processing, maximizing raw material utilization and further reducing raw material costs and waste emissions.

Frequently Asked Questions (FAQ)

Q1: What types of waste film can the PP film granulator process?
A: This machine can handle agricultural greenhouse films, packaging stretch films, BOPP/CPP industrial films, courier plastic bags, shrink wrap, and other types of waste PP film, offering broad applicability.
Q2: Does the equipment require prior shredding of waste film?
A: No, the machine is equipped with a compactor and agglomeration feeding system that can directly process whole rolls or bundles of loose film, eliminating the need for separate shredding and simplifying the production workflow.
Q3: What is the machine’s capacity range, and can it be customized?
A: Standard models have a capacity of 100–1500 kg/h, and the machine can also be customized according to specific customer production needs, accommodating businesses of varying sizes.
Q4: What is the quality of the finished pellets? Are there any bubbles?
A: Thanks to multi-stage venting and dehumidification, the final pellets maintain a moisture content of ≤0.3%, are bubble-free, and exhibit excellent appearance, with a defect rate kept below 3%.
Q5: What are the delivery and warranty periods?
A: Delivery takes 70–80 working days, and the warranty lasts 13 months from the date of the bill of lading. Key components are sourced from reputable brands, ensuring reliable performance and stability.
Q6: What costs can be saved by using this granulator?
A: Using this machine eliminates the need for shredding, reduces staffing by 1–2 workers, and saves over 15% energy per ton processed. Additionally, production scraps can be fully recycled, significantly cutting labor, energy, and raw material costs.