Plastic Drying Equipment

Product Overview

This plastic drying equipment is a screw-extrusion type plastic dewatering and squeezing machine, specifically designed for plastic recycling and processing applications. It can be directly connected to the discharge of the washing line, enabling continuous, streamlined production. The equipment employs a purely physical extrusion dewatering method, requiring no heating energy and resulting in extremely low operating costs. It effectively removes free water from washed plastic materials, reducing moisture content to below 5%, thereby efficiently linking the washing line with subsequent pelletizing processes and effectively addressing various issues associated with direct pelletization of wet plastics. The product can be custom-made according to customer production capacity requirements, with no fixed price. The entire machine features wear-resistant screws and stainless steel screens, ensuring long service life, low maintenance costs, convenient operation, and a low failure rate, making it an essential auxiliary device for plastic washing plants, recycled granule production facilities, and similar enterprises.

Technical Principle

The equipment operates on the principle of screw-extrusion dewatering. After washing, wet plastic materials are conveyed into the squeezing chamber, where they are continuously compressed by variable-diameter screw flights. Internal free water is forced out through side-wall stainless steel screens, achieving purely physical dewatering. As the material moves from the feed end to the discharge end, pressure gradually increases, progressively enhancing the dewatering effect, ultimately producing dry material with very low moisture content that can be directly fed into subsequent pelletizing processes without additional pre-treatment steps, thus ensuring continuity in the production flow.

Performance Data

1. Processing Capacity: 500–2000 kg/h
2. Moisture Content After Squeezing: ≤5%
3. Overall Dewatering Rate: Up to 75% or higher
4. Screen Material: Wear-resistant stainless steel
5. Production Mode: Supports continuous production
6. Screw and Barrel Material: 38CrMoAlA alloy, bimetallic construction, nitrogen-treated
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 the bill of lading date
12. Trademark/Brand: PURUI
13. Country of Origin: NANTONG

Core Advantages

1. Low Energy Consumption: Utilizes purely physical extrusion dewatering with no heating energy, resulting in extremely low operating costs. Compared to traditional hot-air drying processes, it saves over 70% on electricity, reducing annual energy expenses by more than RMB 80,000 per production line and significantly cutting enterprise production costs.
2. Highly Efficient Dewatering: Achieves high dewatering efficiency, directly reducing material moisture content from over 20% to below 5%. The overall dewatering rate can exceed 75%, meeting the stringent moisture requirements of downstream pelletizing processes.
3. Long Service Life and Low Maintenance Costs: Wear-resistant screws and stainless steel screens ensure extended lifespan, reducing the frequency of component replacements and lowering maintenance expenses, thereby decreasing overall equipment operating costs.
4. Compatible with Continuous Production: Can be directly connected to the discharge of the washing line, enabling streamlined, continuous production without manual material transfer, boosting productivity and optimizing the production process.
5. Easy Operation and Low Failure Rate: With a simple structure and straightforward operating procedures, the equipment exhibits a low daily failure rate, minimizing downtime caused by equipment malfunctions.

Core Value of the Product

1. Significant Reduction in Energy Costs: Saves over 70% on electricity compared to hot-air drying, reducing annual energy expenses by more than RMB 80,000 per production line and helping enterprises continually cut production costs.
2. Improved Finished Product Quality: By stabilizing material moisture content at or below 5%, it prevents bubble formation and breakage during subsequent pelletizing, reducing the defect rate in downstream processes by 80% and cutting screen replacement frequency by 60%, thereby enhancing the quality of recycled granules.
3. Space-Saving Design: Occupying only one-third the footprint of conventional drying lines, it significantly saves factory floor space, optimizes plant layout, and improves space utilization.
4. Ensured Production Stability: Its continuous production mode combined with highly efficient dewatering helps avoid instability caused by incomplete dehydration, ensuring smooth production flows and boosting overall enterprise productivity.

Target Customer Groups

Plastic washing plants, recycled granule production facilities, plastic recycling and processing companies, renewable resource industrial parks, and solid waste treatment enterprises—all these businesses have substantial needs for dewatering wet plastic materials. This equipment seamlessly integrates into their production workflows, enhancing both productivity and product quality.

Application Scenarios

This equipment is primarily used for dewatering PE/PP film after washing, squeezing woven bags after cleaning, and pre-treating regenerated plastic from films and woven bags prior to pelletizing. In these scenarios, it quickly processes washed wet plastic materials, reducing moisture content to below 5% and providing qualified raw materials for subsequent pelletizing, thereby ensuring the quality of recycled granules.

Solutions to Industry Pain Points

1. Solving Quality Issues Caused by Direct Pelletization of Wet Materials: Addressing the problem of high moisture content leading to bubble formation, broken pellets, and high defect rates in direct pelletization, this equipment reduces moisture to below 5%, cutting downstream defect rates by 80% and significantly improving finished product quality.
2. Replacing High-Energy-Demand Drying Processes: In response to the high energy consumption, significant costs, and low dewatering efficiency of hot-air drying, this equipment adopts purely physical extrusion dewatering with no heating energy, saving over 70% on electricity and achieving a dewatering rate exceeding 75%, balancing efficiency with energy conservation.
3. Overcoming Limitations of Natural Air-Drying: Confronting the drawbacks of natural air-drying—large footprint, low efficiency, and weather dependency—this equipment occupies only one-third the space of conventional drying lines, enables continuous production, remains unaffected by weather conditions, and dramatically boosts both dewatering efficiency and site utilization.
4. Ensuring Subsequent Production Stability: To address instability and poor product quality caused by incomplete dehydration, the equipment’s stable dewatering performance keeps moisture levels consistently below 5%, preventing production fluctuations due to moisture-related issues and ensuring smooth operation of downstream pelletizing processes.

Common Questions FAQ

Q1: How effective is this plastic drying equipment in dewatering?
A: The equipment can reduce the moisture content of washed plastic materials from over 20% down to below 5%, with an overall dewatering rate exceeding 75%, fully meeting the raw material requirements of downstream pelletizing processes.
Q2: Is the operating cost of this equipment high?
A: The equipment uses purely physical extrusion dewatering with no heating energy, saving over 70% on electricity compared to hot-air drying. Each production line can save more than RMB 80,000 annually in energy costs, resulting in extremely low operating expenses.
Q3: Can this equipment be integrated with existing production lines?
A: Yes, it can be directly connected to the discharge of the washing line, enabling continuous, streamlined production without requiring major modifications to existing lines.
Q4: What are the delivery and warranty periods?
A: The delivery time is 70–80 working days, and the warranty period is 13 months from the bill of lading date, safeguarding customers’ usage rights.
Q5: Does this equipment support customization?
A: Yes, it is a custom-made product with no fixed price. It can be tailored to meet specific customer production capacity needs, adapting to the scale of different enterprises.