Purui PP Woven Bag Granulator

Product Overview

The Purui PP woven bag granulator is a wear-resistant recycling granulation machine equipped with a compacting and agglomeration feeding system. It is a customized product without a fixed price, tailored to meet the customer’s production requirements. This equipment can directly process whole bags of waste woven materials without prior shredding, efficiently producing high-quality recycled PP pellets. It is suitable for various applications involving the recovery and reuse of used woven bags, providing plastic recycling companies with an efficient, energy-saving recycling solution. Manufactured under the PURUI brand and originating from NANTONG, the machine features high-quality core components, ensuring stable and reliable operation, and effectively addressing many common pain points associated with traditional granulation equipment.

Technical Principle

This granulator employs an integrated process combining a compactor and a thickened, wear-resistant single-screw design, enabling a complete processing flow from waste woven materials to recycled pellets. Used woven bags and ton bags can be fed directly into the compactor chamber, where high-speed rotating and stationary blades perform powerful shearing and disintegration. As the material collides and rubs at high speeds within the chamber, friction generates heat, causing the originally fluffy woven material to contract and compact into uniform agglomerates. With a significant increase in bulk density, the material is smoothly fed into the extrusion screw, completely eliminating the issue of loose material clogging the feed system. Subsequently, the material enters the extrusion stage, undergoing segmented heating and intense shearing by the screw to achieve melting and plasticization. Multi-stage filtration through the die then removes impurities such as ink and sand, before finally being extruded, water-cooled, and cut into pellets. The entire process requires no additional crushing steps, making it compact and highly efficient.

Core Performance Parameters

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

Key Product Advantages

1. No bridging or material blockage in the compactor feed: The compactor’s unique structure compresses fluffy woven material into uniform agglomerates, boosting bulk density by 3–4 times and ensuring smooth, consistent feeding. This thoroughly resolves the problem of loose material clogging traditional equipment, guaranteeing continuous, stable production.
2. Eliminates the need for separate shredding: Whole bags or bundles of waste woven material can be fed directly into the machine without prior shredding, greatly simplifying the production process and reducing additional equipment investment and labor costs.
3. Self-heating through material friction saves energy: Material naturally heats up through collisions and friction inside the compactor, achieving preheating before entering the extrusion stage. Compared to conventional equipment, this results in over 12% energy savings per ton processed, significantly lowering operating costs.
4. Thickened, wear-resistant screw handles high-impurity materials: The screw is made of alloy with excellent wear resistance, treated with nitrogen, ensuring long-term stable operation even when processing dirty materials containing sand, ink, or other contaminants, thereby reducing maintenance expenses and downtime caused by screw wear.
5. Multi-stage filtration ensures high-purity pellets: Equipped with multi-stage filter dies, the machine effectively removes impurities like ink and sand, producing high-purity recycled PP pellets with a defect rate kept below 3%, ready for direct reuse in woven bag production.

Core Value Proposition

1. Cost reduction and efficiency gains: By eliminating the separate shredding step and reducing staffing by 1–2 operators, labor costs drop by 35%; improved preheating and plasticization efficiency leads to over 12% energy savings per ton processed, substantially cutting operational expenses.
2. High productivity and stability: With standard models offering capacities ranging from 100 to 1500 kg/h, a single line can produce up to 36 tons per day around the clock, ensuring steady, consistent feeding and avoiding fluctuations in output, thus supporting continuous, efficient enterprise operations.
3. Extended component lifespan: Alloy cutting tools last 120% longer, while the wear-resistant screw handles high-impurity materials, reducing maintenance frequency and replacement costs, thereby extending overall equipment life.
4. High-quality output: With a defect rate kept below 3%, the recycled pellets are pure enough for direct reuse in woven bag production, enhancing the economic value of recycled materials and meeting downstream production needs.

Target Customer Base

This PP woven bag granulator targets multiple sectors, including woven bag manufacturers, cement packaging companies, grain packaging enterprises, waste plastic recycling plants, and recycled pellet processing facilities. For woven bag producers, it enables the recycling of edge trimmings generated during production, promoting material circularity; for packaging companies, it efficiently processes discarded cement woven bags and grain ton bags, reducing solid waste disposal costs; and for recycling and pellet processing plants, it transforms various types of used woven bags into high-quality recycled pellets, generating greater economic returns.

Application Scenarios

This equipment is suitable for a wide range of recycling and granulation applications involving used woven bags, including cement woven bags, grain ton bags, bulk containers, snake-skin mesh bags, laminated woven bags, and more. Regardless of whether the material contains sand, ink, or other impurities, the machine’s multi-stage filtration system effectively removes these contaminants, producing PP recycled pellets that meet required specifications. It can handle whole bags and bundles directly without prior shredding, making it especially ideal for large-scale recycling projects with diverse material types, providing an efficient solution for different kinds of waste plastic recycling.

Solving Industry Pain Points

1. Addressing the issue of loose material clogging the feed system: Through the compactor’s agglomeration feeding system, fluffy material is compacted into denser agglomerates, which are smoothly fed into the screw, completely preventing bridging and blockages and ensuring uninterrupted production.
2. Reducing the need for separate shredding and associated labor costs: The machine allows direct feeding of whole bags and bundles, eliminating the separate shredding step, decreasing the need for additional crushing equipment, and cutting labor costs by 1–2 operators, resulting in a 35% reduction in labor expenses and a streamlined production process.
3. Mitigating uneven feeding that causes significant output fluctuations: After the compactor processes the material into uniform agglomerates, it feeds them steadily into the screw, keeping input quantities stable and controllable, thus avoiding production swings caused by uneven feeding and ensuring the equipment consistently meets its rated capacity.
4. Tackling rapid screw wear and high maintenance costs in conventional equipment: Featuring a thickened, alloy wear-resistant screw treated with nitrogen, this machine exhibits superior wear resistance, adapting well to dirty materials containing impurities, thereby reducing screw wear, maintenance expenses, and downtime.
5. Solving the problem of clogged screens and poor pellet quality due to excessive impurities: Equipped with multi-stage filter dies, the machine effectively removes ink, sand, and other contaminants, preventing screen blockages while producing high-purity recycled pellets with a low defect rate, ready for direct reuse in production.

Frequently Asked Questions (FAQ)

Q1: Does this PP woven bag granulator require pre-shredding of used woven materials?
A: No, the machine is equipped with a compactor-based agglomeration feeding system, allowing direct feeding of whole bags and bundles of waste woven materials without prior shredding, thus saving on separate shredding steps and reducing labor and equipment costs.
Q2: What is the capacity range of this equipment?
A: Standard models offer capacities from 100 to 1500 kg/h, with options available to customize models according to specific production needs; a single line can produce up to 36 tons per day around the clock.
Q3: How is the quality of the recycled pellets produced?
A: Equipped with multi-stage filter dies, the machine effectively removes impurities, keeping the defect rate of recycled pellets below 3%, with high purity suitable for direct reuse in woven bag production, meeting downstream manufacturing demands.
Q4: What is the warranty period for this equipment?
A: The warranty lasts 13 months from the date of the bill of lading. During this period, core components damaged not due to user error are eligible for free repair or replacement services.
Q5: What is the delivery time for this equipment?
A: Delivery takes 70–80 working days, subject to customization requests and production scheduling adjustments.