Industrial Woven Bag Friction Washing Line

Product Overview

The industrial woven bag friction washing line is an integrated pre-processing equipment specially designed for PP woven bags and ton bags. It combines crushing, deinking, sand removal, and washing processes into a single workflow, thoroughly stripping away surface contaminants such as ink, cement clumps, and labels to produce clean shredded material that seamlessly connects with subsequent pelletizing operations. The equipment supports customized hot-washing units, accommodating both lightly soiled woven bags and heavily contaminated materials. Its processing capacity ranges from 600 to 1800 kg/h, achieving an ink removal rate of ≥92%, a sand removal rate of ≥95%, and a moisture content of ≤4% after squeezing—making it a core supporting device in the recycled resources recovery sector.

Technical Principle and Process Flow

In response to the characteristics of woven bags—high ink content, high sand levels, and laminated surfaces—the industrial woven bag friction washing line employs a fully closed-loop process featuring “shredding + intensive friction deinking + flotation separation + multi-stage rinsing + squeezing.” Each step is tightly linked, enabling efficient purification of soiled woven bags:

1. Whole-Bag Shredding: Bundles or individual woven bags and ton bags are fed by a feeder into a twin-shaft shredder, where they are coarsely shredded into 5–10 cm pieces, completely breaking down the woven structure while releasing heavy impurities like embedded sand and cement clumps, thus reducing the difficulty of subsequent washing steps.

2. Intensive Friction Deinking and washing: The shredded material enters a horizontal high-speed friction washer, where wear-resistant blades at high rotation speed cause vigorous collisions and self-friction. Combined with immersion in room-temperature or heated wash water, this process powerfully removes stubborn surface contaminants such as printing ink, residual cement, and laminating adhesive layers. Detached ink and fine sand are discharged through the equipment’s screen openings along with wastewater. For heavily inked or laminated materials, an optional 80–95°C hot-washing module can be used in conjunction with eco-friendly detergents for deeper treatment, further enhancing impurity removal.

3. Flotation Separation and Impurity Removal: After friction washing, the material flows into a flotation rinse tank, leveraging differences in impurity density for separation: paper labels, plastic laminates, and light debris float to the surface and are discharged via overflow; heavier sand and metal fragments settle at the bottom and can be periodically removed. Within the tank, a screw conveyor performs preliminary rinsing, further eliminating surface residues and remaining washing agents.

4. Secondary Clean Water Rinsing: Following flotation separation, the material moves to a secondary clean-water tank, where it undergoes a second rinse in flowing clean water, thoroughly removing residual washing agents and fine particles, thereby significantly improving cleanliness and ensuring product quality for downstream pelletizing.

5. Spiral Squeezing and Dewatering: The cleaned material is fed into a spiral squeezing machine, which physically presses out moisture. The equipment’s wear-resistant stainless steel screens simultaneously filter out any remaining fine residue, yielding dry material with a moisture content of ≤4%, ready for direct feeding into pelletizing machinery.

6. Water Recycling System: The equipment is equipped with a three-stage sedimentation and filtration system. Wash water, after settling and filtration, is recycled and reused, greatly reducing water consumption during production and realizing an environmentally friendly, water-saving manufacturing model.

Key Performance Parameters

1. Processing Capacity: 600–1800 kg/h
2. Ink Removal Rate: ≥92%
3. Sand Removal Rate: ≥95%
4. Moisture Content After Squeezing: ≤4%
5. Optional Hot-Washing Temperature: 80–95°C
6. Water Recycling Rate: ≥85%

Core Product Advantages

1. Outstanding Friction Deinking and Sand Removal: Utilizing high-speed, wear-resistant blades that create self-friction, this process effectively strips away ink, cement residue, and laminating adhesive layers from heavily soiled woven bags, achieving an ink removal rate of ≥92% and a sand removal rate of ≥95%, ensuring the resulting material meets pelletizing requirements.

2. Customizable Hot-Washing Units to Meet Diverse Needs: Depending on the degree of contamination, users can choose between standard temperature washing or customize a 80–95°C hot-washing module, addressing both lightly soiled woven bags and heavily inked or laminated materials, thus broadening the equipment’s applicability.

3. Long Lifespan of Wear-Resistant Components and Low Maintenance Costs: Key parts are made from wear-resistant alloys, with alloy blades lasting twice as long as conventional ones, while the cost of replacing consumables has dropped by 45%, significantly reducing long-term operating and maintenance expenses.

4. Simultaneous Flotation Separation for Light and Heavy Impurities: By leveraging the density-based separation principle of the flotation rinse tank, both floating light impurities and settled heavy impurities can be removed concurrently, eliminating the need for additional separate equipment, simplifying the process flow, and boosting efficiency.

5. Water Recycling System Saves Water and Protects the Environment: Equipped with a three-stage sedimentation and filtration system, the equipment achieves a water recycling rate of over 85%, reducing water consumption per ton of material by 75%. This not only lowers production costs but also aligns with eco-friendly manufacturing standards.

6. Seamless Integration with Subsequent Pelletizing Lines: With a moisture content of ≤4%, the clean dry material can be directly fed into pelletizing equipment without additional drying, enabling seamless integration between washing and pelletizing processes and improving overall production efficiency.

Core Product Value

1. High Cleanliness Ensures Superior Quality of Recycled Pellets: With a combined ink and sand removal rate exceeding 93%, this equipment completely eliminates issues like blackened pellets or poor appearance caused by ink residue, enhancing the market competitiveness of recycled products.

2. Dramatically Improves Pelletizing Efficiency: Cleaner material reduces impurity-related clogging during pelletizing, lowering mesh-changing frequency by 70% and cutting downtime associated with mesh changes, thereby boosting overall production efficiency.

3. Significantly Reduces Overall Operating Costs: Alloy wear-resistant blades last twice as long, reducing consumable costs by 45%; water recycling rates exceed 85%, cutting water usage per ton by 75%; and with only 2–3 operators required per line, labor costs drop by 60%, comprehensively lowering enterprise operating expenses.

4. Supports Sustainable Development Through Environmental Compliance: The water recycling system drastically cuts water consumption, meeting environmental standards and helping companies achieve sustainable development goals while complying with regulatory requirements in the recycled resources sector.

Target Customer Groups

The primary target customer groups include woven bag recycling enterprises, cement and grain packaging plants, recycled resource processing centers, and large-scale PP recycled pellet factories. These businesses all face substantial demand for processing dirty woven bags, and the industrial woven bag friction washing line helps them achieve efficient, environmentally friendly material pre-processing, enhancing both the quality and productivity of recycled products.

Application Scenarios

The industrial woven bag friction washing line is suitable for washing and pre-processing various types of soiled woven waste, including cement woven bags, laminated ton bags, grain woven bags, bulk space bags, snake-skin mesh bags, and more. Whether the material contains cement clumps, printing ink, or laminating adhesive layers, the equipment delivers targeted deep purification, providing qualified clean raw materials for subsequent pelletizing operations.

Solutions to Industry Pain Points

1. Addressing the Issue of Sand and Gravel Causing Screw Wear: By releasing internal sand through whole-bag shredding and thoroughly removing heavy sand during flotation separation, the equipment prevents sand from wearing down pelletizing screws, extending the lifespan of pelletizing machinery.

2. Solving the Problem of Blackened Pellets and Poor Appearance Caused by Ink Residue: Using intensive friction deinking technology with an ink removal rate of ≥92%, the equipment ensures uniform color and improved product quality, raising market value.

3. Tackling Frequent Mesh Clogging and Low Production Efficiency: Highly clean raw materials dramatically reduce impurity-related blockages during pelletizing, cutting mesh-changing frequency by 70% and minimizing downtime, thereby enhancing production continuity and overall efficiency.

4. Overcoming the Challenges of Labor-Intensive Manual washing and Unreliable Cleanliness: The equipment offers automated, integrated washing, requiring only 2–3 operators per line, reducing labor costs by 60%, while its water recycling rate exceeds 85%, cutting water use per ton by 75% and maintaining stable, controllable cleanliness far surpassing manual methods.

Frequently Asked Questions (FAQ)

Q1: Can the industrial woven bag friction washing line handle laminated ton bags?
A: Yes. To address the specific characteristics of laminated woven bags, the equipment can be customized with an 80–95°C hot-washing module paired with eco-friendly detergents to deeply remove the laminating adhesive layer, while intensive friction processes strip away surface ink, ensuring the material meets pelletizing requirements.

Q2: What is the equipment’s processing capacity range?
A: The equipment’s processing capacity spans 600–1800 kg/h, customizable according to customers’ actual production needs, catering to enterprises of varying scales.

Q3: What is the moisture content of the washed material? Can it go straight into pelletizing?
A: After spiral squeezing, the material’s moisture content drops to ≤4%, eliminating the need for additional drying. It can be directly fed into pelletizing equipment, enabling seamless integration between washing and pelletizing processes.

Q4: How does the equipment’s water recycling system save water?
A: Equipped with a three-stage sedimentation and filtration system, the equipment recycles wash water after removing large particulates through sedimentation and filtering out fine particles, achieving a water recycling rate of over 85%. Compared to traditional washing methods, this reduces water consumption per ton by 75%.