Purui Bulk Bag and Space Bag Granulator

Product Overview

The Purui bulk bag and space bag granulator is a wear-resistant recycled granulation machine for woven bags, originating from Nantong. It is specifically designed for the recycling and regeneration of waste woven materials. The equipment features a compacting and agglomeration feeding system, enabling it to process whole bags or bundles of waste woven materials directly, without the need for prior shredding. Through an integrated process, it efficiently produces high-quality PP recycled pellets, with a capacity ranging from 100 to 1500 kg/h, catering to plastic recycling needs of various scales. Moreover, the core components of the machine are made from wear-resistant materials and equipped with parts from internationally renowned brands, ensuring stable and durable operation, effectively addressing common industry issues such as material feed blockages, fluctuating production capacity, and rapid screw wear in traditional granulators.

Technical Principle

This equipment employs an integrated process combining a compactor and a thickened, wear-resistant single-screw extruder to achieve efficient regeneration of waste woven materials. First, used woven bags and ton bags can be fed directly into the compactor chamber, where high-speed rotating blades perform powerful shearing and disintegration. As the material collides and rubs within the chamber, friction generates heat, causing the originally fluffy woven material to contract and compact into uniform agglomerates. With a bulk density increased by 3–4 times, the material is smoothly fed into the extrusion screw, completely resolving the issue of bridging and material blockages commonly encountered when processing loose materials. Subsequently, the agglomerated material enters the extrusion stage, undergoing segmented heating and intense shearing by the screw to achieve melting and plasticization. Heating options include electric heating and electromagnetic heating, with heater materials ranging from cast aluminum and cast copper to mica and ceramic, allowing customization based on specific requirements. Finally, multi-stage filtration through die heads removes impurities such as ink and sand, followed by water-cooled pelletizing via either die-face cutting or strand-cutting methods, resulting in high-purity PP recycled pellets.

Performance Parameters

1. Standard model capacity: 100–1500 kg/h
2. Screw material: 38CrMoAlA alloy or bimetallic material, nitrogen-treated
3. Main motor power: 37–355 kW
4. Compactor processing capability: capable of handling whole bundles or bags of woven materials, increasing bulk density by 3–4 times
5. Heating method: electric heating or electromagnetic heating
6. Heater materials: cast aluminum, cast copper, mica, ceramic heaters
7. Motor brand: Siemens, ABB, Weg, or leading domestic brands
8. Pelletizing method: die-face cutting or strand-cutting
9. Bearing brand: NSK, SKF, INA, FAG, or top domestic brands
10. Inverter brand: ABB, FUJI, Delta, Siemens
11. Delivery time: 70–80 working days
12. Warranty period: 13 months from the bill of lading date
13. Trademark/brand: PURUI
14. Origin: Nantong

Core Advantages

1. No bridging or material blockages during compactor feeding: The unique compactor’s agglomeration feeding system compresses fluffy woven materials into high-density pellets, ensuring smooth and steady feeding, thereby eliminating the problem of material bridging and blockages seen in conventional equipment, guaranteeing stable production output.
2. Eliminates the need for separate shredding: Whole bags or bundles of waste woven materials can be fed directly into the machine without prior shredding, significantly reducing processing steps and lowering additional equipment and labor costs.
3. Self-heating through friction saves energy: Material heats up naturally through collisions and friction inside the compactor, reducing external heating energy consumption and improving plasticization efficiency; each ton processed saves over 12% electricity, leading to substantial long-term reductions in power costs.
4. Thickened, wear-resistant screw suitable for dirty materials: The screw is made of alloy wear-resistant material and nitrogen-treated, offering excellent durability and adapting well to processing materials containing significant impurities, thus slowing down screw wear and reducing maintenance costs and downtime.
5. Multi-stage filtration ensures high pellet purity: Advanced filtration through multiple die stages effectively removes ink, sand, and other contaminants, producing PP recycled pellets of high purity with a defect rate kept below 3%, making them suitable for direct reuse in woven bag production and enhancing the added value of the pellets.
6. Reliable quality of core components: Motors, bearings, inverters, and other key parts are sourced from internationally recognized brands like Siemens, ABB, NSK, or top domestic brands, ensuring robust operational stability and extended service life.

Core Product Value

1. Cost reduction and efficiency gains: By eliminating the separate shredding step and reducing the number of operators by 1–2, labor costs drop by 35%; self-heating through friction boosts plasticization efficiency, saving over 12% electricity per ton processed, resulting in significant overall cost reductions.
2. Stable production capacity: The compactor’s uniform feeding prevents fluctuations in output, with standard models reaching up to 1500 kg/h and individual lines capable of producing up to 36 tons per day, meeting large-scale production demands.
3. Extended equipment lifespan: Alloy tool life is improved by 120%, and the wear-resistant screw adapts well to processing dirty materials, reducing equipment wear and repair frequency, thereby lowering subsequent maintenance costs.
4. High-value output: With a defect rate kept below 3% and high purity, the pellets can be directly reused in woven bag production, enhancing both the market value and application scope of recycled pellets.

Target Customer Base

This equipment is specially designed for various plastic recycling and related manufacturing enterprises. Its target customers include woven bag producers, cement and grain packaging companies, waste plastic recycling plants, and recycled pellet processing facilities, helping businesses turn waste packaging materials into valuable resources, reduce raw material procurement costs, and expand sales channels for recycled pellets.

Application Scenarios

The bulk bag and space bag granulator is suitable for recycling and granulating a wide range of waste woven materials, including cement woven bags, grain ton bags, bulk space bags, snake-skin mesh bags, laminated woven bags, and more. Regardless of whether the materials contain impurities or are fluffy, they can all be processed directly by this equipment, yielding high-quality PP recycled pellets and achieving circular utilization of waste plastics—meeting environmental standards while generating economic benefits for enterprises.

Solutions to Industry Pain Points

1. Solves the issue of bridging and material blockages when processing fluffy woven materials: The compactor compresses fluffy materials into high-density agglomerates, ensuring uniform and stable feeding, completely avoiding bridging problems and guaranteeing continuous, stable equipment operation.
2. Eliminates extra costs associated with pre-shredding: No need to separately equip shredding machinery; whole bags or bundles can be fed directly, reducing processing steps and saving on equipment investment and labor costs.
3. Addresses production capacity fluctuations caused by uneven feeding: The compactor’s stable agglomeration feeding mode ensures consistent material flow into the extrusion screw, preventing sudden spikes or drops in output and improving production efficiency and product consistency.
4. Improves the problem of rapid screw wear in conventional equipment: Using alloy wear-resistant screws treated with nitrogen significantly enhances wear resistance, making them suitable for processing materials with high levels of impurities, extending screw life and reducing maintenance costs and downtime.
5. Resolves issues of clogged screens and poor pellet quality due to excessive impurities: Multi-stage filtration effectively removes contaminants, ensuring high pellet purity with a defect rate kept below 3%, allowing the produced pellets to be directly reused in production and enhancing product quality and market competitiveness.

Frequently Asked Questions (FAQ)

Q1: Can this granulator directly process whole bags of waste woven materials?
A: Yes, the equipment is equipped with a compactor and agglomeration feeding system, allowing direct processing of whole bags or bundles of waste woven materials without prior shredding, thus eliminating the need for separate crushing equipment and reducing operational costs.
Q2: What is the capacity range of this equipment?
A: Standard models have a capacity of 100–1500 kg/h, with individual lines capable of producing up to 36 tons per day, allowing customers to select the appropriate model configuration based on their production needs.
Q3: How is the quality of the recycled pellets produced?
A: Thanks to multi-stage filtration that removes impurities, the pellets boast high purity, with a defect rate kept below 3%, making them suitable for direct reuse in woven bag production and meeting downstream quality requirements.
Q4: Which brands are used for the core components of the equipment?
A: Motors come from Siemens, ABB, Weg, or leading domestic brands; bearings are from NSK, SKF, INA, FAG, or top domestic brands; inverters include ABB, FUJI, Delta, and Siemens, ensuring stable operation.
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, providing ample time for production preparation and after-sales support.