PP Woven Bag Friction Squeezing Dryer

Product Overview

The PP woven bag friction squeezing dryer is a customized spiral extrusion-type plastic dewatering device, specifically designed for plastic recycling and processing applications. It removes free water from washed plastic materials through purely physical squeezing, accurately reducing the moisture content to below 5%. This equipment efficiently connects the plastic washing line with subsequent pelletizing processes, enabling continuous, streamlined production. Manufactured under the PURUI brand and originating in Nantong, it features core components sourced from internationally renowned brands, ensuring stable and reliable performance. It effectively addresses dewatering challenges in plastic recycling, reduces production energy consumption and costs, and enhances product quality.

Technical Principle

This dryer operates on the principle of spiral extrusion dewatering, with no heating involved—entirely a physical process. Wet plastic materials after washing are fed into the dryer chamber via a dedicated conveying system. Under the continuous pushing and compressive action of variable-diameter screw blades, the material volume is steadily reduced, and the free water inside is expelled through wear-resistant stainless steel screens on the machine’s side walls, completing the dewatering process. From the feed end to the discharge end, the material undergoes a gradual pressurization and dewatering process, with pressure progressively increasing and dewatering effectiveness intensifying at each stage. The result is dry material with low moisture content, ready for direct transfer to downstream pelletizing operations without additional preprocessing.

Performance Parameters

1. Processing Capacity: 500–2000 kg/h
2. Post-Dewatering Moisture Content: ≤5%
3. Overall Dewatering Rate: Over 75%
4. Screen Material: Wear-Resistant Stainless Steel
5. Production Mode: Supports Continuous Operation
6. Screw Barrel Material: 38CrMoAlA, Bimetallic, Nitrided Treatment
7. Motor Brand: Siemens, ABB, Weg, or Leading Domestic Brands
8. Bearing Brand: NSK, SKF, INA, FAG, or Top Domestic Brands
9. Inverter Brand: ABB, FUJI, Delta, Siemens
10. Delivery Time: 70–80 Working Days
11. Warranty Period: 13 Months from Bill of Lading Date
12. Brand Trademark: PURUI
13. Country of Origin: Nantong

Core Advantages

1. Purely Physical, Low-Energy Dewatering: Utilizing a purely physical extrusion method without heating, this dryer consumes no extra energy during operation. Compared to traditional hot-air drying, it saves over 70% on electricity, reducing annual energy costs by more than RMB 80,000 per production line while maintaining extremely low operating expenses.
2. Highly Efficient Dewatering: With outstanding dewatering efficiency, it can reduce moisture levels from over 20% after washing down to below 5%, achieving an overall dewatering rate exceeding 75%—meeting the stringent moisture requirements of downstream pelletizing processes.
3. Durable and Low-Maintenance: Featuring a 38CrMoAlA bimetallic nitrided screw and wear-resistant stainless steel screens, the core components boast long service life, significantly lowering maintenance costs and downtime.
4. Compatible with Assembly Line Production: Directly interfacing with the discharge port of plastic washing lines, it enables seamless, continuous production without manual handling or intermediate transfers, boosting overall productivity and making it ideal for large-scale plastic recycling operations.
5. Easy to Operate: With a simple structure and straightforward procedures, operators can quickly master its use after minimal training, keeping daily operation and maintenance uncomplicated and reducing labor costs.

Core Value of the Product

1. Dramatically Reduced Production Energy Consumption: Saving over 70% compared to hot-air drying, this dryer cuts annual energy costs by more than RMB 80,000 per line, directly easing enterprise expenses and expanding profit margins.
2. Enhanced Product Quality: By stabilizing moisture content at 5% or lower, it prevents issues like bubbling and breakage during subsequent pelletizing, reducing defective pellet rates by 80% and decreasing screen-changing frequency by 60%, thus improving the uniformity and stability of finished pellets.
3. Optimized Production Layout: Occupying only one-third of the space required by conventional drying lines, it frees up valuable factory floor area, allowing businesses to better organize their production workshops and maximize space utilization.
4. Ensured Production Continuity: Supporting continuous operation and seamlessly integrating with washing lines to enable uninterrupted flow, it avoids production stoppages caused by dewatering delays, thereby enhancing overall efficiency.

Target Customer Base

This equipment is specially designed for enterprises engaged in plastic recycling and processing. Its target customers include plastic washing plants, recycled pellet manufacturers, plastic recycling companies, renewable resource industrial parks, and solid waste treatment facilities—any operation requiring large-scale plastic dewatering. It helps address various pain points in the dewatering process and boosts production efficiency.

Application Scenarios

The PP woven bag friction squeezing dryer is suitable for pre-dewatering treatments across a wide range of plastic materials, including PE/PP film after washing, squeezed dewatering of woven bags, and pre-dewatering of recycled plastics from films and woven bags. Whether soft plastic films or rigid woven bags, all can achieve efficient dewatering after cleaning, providing qualified dry materials for downstream pelletizing and ensuring smooth production workflows.

Solutions to Industry Pain Points

1. Solving Quality Issues Caused by Direct Pelletizing of Wet Materials: Addressing problems such as bubbling, breakage, and high defect rates when wet materials with high moisture content are directly pelletized, this dryer reduces moisture levels to below 5%, cutting defective pellet rates by 80% and significantly improving finished pellet quality.
2. Replacing High-Energy Drying Processes: Countering the drawbacks of hot-air drying—high energy consumption, high costs, and low dewatering efficiency—the purely physical extrusion method saves over 70% on energy, reducing annual energy costs by more than RMB 80,000 while delivering higher dewatering efficiency and enabling continuous production.
3. Overcoming Limitations of Natural Air-Drying: Tackling the disadvantages of natural air-drying—large footprint, low efficiency, and weather dependency—the dryer occupies only one-third the space of a conventional drying line, operates independently of weather conditions, and allows 24-hour continuous operation, far surpassing the dewatering efficiency of natural air-drying.
4. Ensuring Stability in Subsequent Production: Addressing instability and poor product quality resulting from incomplete dewatering, this dryer consistently maintains moisture levels below 5%, providing a stable material foundation for downstream pelletizing, minimizing production fluctuations, and enhancing product consistency.

Frequently Asked Questions (FAQ)

Q1: What is the processing capacity range of this dryer?
A: The equipment’s processing capacity ranges from 500 to 2000 kg/h, customizable to meet specific customer production needs and accommodate businesses of varying scales.
Q2: What standard can the post-dewatering moisture content reach?
A: After extrusion dewatering, the moisture content can be stably reduced to below 5%, with an overall dewatering rate exceeding 75%, fully satisfying the requirements of downstream pelletizing processes.
Q3: Which brands are used for the core components?
A: Motors can be selected from Siemens, ABB, Weg, or leading domestic brands; bearings from NSK, SKF, INA, FAG, or top domestic brands; inverters from ABB, FUJI, Delta, or Siemens. These core components ensure reliable quality and stable equipment operation.
Q4: What are the delivery time and warranty period?
A: Delivery takes 70–80 working days, with a 13-month warranty starting from the date of the bill of lading. During the warranty period, any non-human-caused defects will be covered by corresponding after-sales services.
Q5: Does this dryer support integration with existing washing lines?
A: Yes, the equipment can directly connect to the discharge port of washing lines, enabling continuous, streamlined production without additional modifications, thus seamlessly integrating into existing production workflows and boosting overall efficiency.