Mechanical Dewatering Technology
High-Speed Centrifugal Dewatering Machine for Plastic Film
Mechanical bulk water removal for LDPE/LLDPE film, PP woven bags, and agricultural film — typically achieving ~3–5% moisture (material dependent) to stabilize extrusion and improve pellet quality.
Problem vs Solution
Struggling With These Recycling Challenges?
Our centrifugal dewatering machine turns your biggest operational headaches into opportunities for higher profit and efficiency.
| Challenge | Traditional Approach | Centrifugal Dewatering |
|---|---|---|
| Energy Costs | Thermal dryers consume huge electricity to evaporate water | Centrifugal force removes 90%+ water mechanically — no heat needed |
| Pellet Quality | Wet flakes cause gas bubbles, foaming, and brittle pellets | Stable <5% moisture ensures dense, smooth, high-value granules |
| Production Downtime | Frequent clogs and jams from lightweight films | “Non-clog” rotor design ensures continuous operation |
| Residual Moisture | 20–30% moisture after traditional drying | ~3–5% moisture (material dependent) |
Simple & Effective
From Wet Flakes to Dry Material in 3 Steps
Mechanical dewatering removes free water quickly and consistently, protecting your extruder from foaming, bubbles, and unstable melt.
Feed Wet Material
Wet film flakes from the washing line (friction washer or sink-float tank) are fed into the machine’s hopper.
High-Speed Dewatering
The rotor spins at up to 1,500 RPM, generating immense G-force that ejects water through a perforated screen.
Collect Dry Flakes
Dewatered flakes (~3–5% moisture) are discharged, ready for a hot-air stage, buffer silo, or pelletizing extruder.
Engineering Superiority
Built for Maximum Drying Efficiency & Uptime
Every component is designed for maximum drying efficiency, longevity, and minimal downtime.
Ultra-High Velocity Rotor
Heavy-duty rotor balanced for speeds up to 1,500 RPM generates extreme G-force, physically ejecting water far more effectively than low-speed tumbling. Optimized airflow design prevents clogging.
SUS304 Stainless Steel
Screen basket, housing, and all water contact points are fabricated from high-grade SUS304 stainless steel, making it impervious to corrosion.
“Non-Clog” Paddle Geometry
Aggressive, stepped paddle design tipped with wear-resistant alloy steel ensures continuous material flow, even with abrasive, sand-laden films.
Premium Bearings & Easy Maintenance
Top-tier international bearings (SKF, NSK, FAG) in external water-cooled blocks extend service life. Segmented polygonal screen and pneumatic cover allow a single operator to swap screens in minutes.
Versatile Drying
Ideal for Soft Plastic Washing Lines
Engineered for the rigorous demands of drying lightweight, high-surface-area plastics that standard dryers can’t handle.
LDPE / LLDPE Film
Efficiently dry post-consumer and post-industrial films to prevent hydrolysis and foaming in the extruder.
PP Woven Bags
Process and dewater shredded PP woven and non-woven materials for consistent, high-quality granule production.
Agricultural Mulch Film
Our non-clog design handles sand-laden, abrasive films without blockages, ensuring continuous operation.
General Plastic Recycling
Serves as the primary, high-throughput drying stage in any soft plastic washing and recycling facility.
Technical Specifications
Choose the model that fits your production needs. Select a model where your normal production rate falls in the mid-range — avoid running continuously at the top end.
| Model | Motor Power | Main Shaft Dia. | Rotating Speed | Capacity |
|---|---|---|---|---|
| CFD-400 | 37 kW | 400 mm | 1400 RPM | 400–800 kg/h |
| CFD-550 | 45 kW | 550 mm | 1200 RPM | 600–1000 kg/h |
| CFD-750 | 55 kW | 750 mm | 1080 RPM | 1200–2000 kg/h |
Machine Details & Gallery
See the high-speed centrifugal dewatering machine components and output quality in detail.
Frequently Asked Questions
A high-speed film centrifugal dewatering machine is specially designed to dewater washed plastic film using centrifugal force at 800-1200 RPM. Unlike standard centrifuges that struggle with film, this machine features anti-wrap rotor design and specialized screen geometry that handles flexible film without jamming or material loss.
Specialized film centrifugal dewatering machines reduce moisture from 30-40% to 8-12%. While not as aggressive as screw press squeezers (which achieve 5-8%), centrifugal machines offer gentler processing with less material degradation. They are often used in combination with screw presses for optimal moisture reduction.
They solve different problems. A centrifugal dewatering machine removes bulk water with high throughput (often ~3–5% moisture) and low energy compared with thermal evaporation. A squeezer is chosen when you also need densification and very low moisture (<1–2%), but it typically has higher capital and operating cost. Many film lines use centrifugal first, then a smaller squeezer or hot-air stage.
Material type (film vs. woven), flake size, feed stability, contamination (sand/dirt), water temperature, and upstream drainage all impact output moisture. We size the rotor/screen for your kg/h and your target dryness.
Most commonly after the final friction washer or sink-float tank. The discharge can feed a hot air pipe dryer, buffer silo, or the pelletizer/compactor depending on required moisture and layout constraints.
Yes — provided the upstream washing configuration is appropriate. For abrasive film, we recommend confirming wear protection options and selecting the correct screen perforation and wear parts for your contamination level.
Please share: material type (LDPE/LLDPE, PP woven, mulch film), target throughput (kg/h), average flake size, contamination notes, and your upstream/downstream equipment. We will recommend a model and screen specification.
Get a Custom Solution & Quote
Share your material type, target kg/h, and upstream washer configuration. We’ll recommend a model, screen specification, and pricing. All machines include factory testing (rotor balance, bearing check, safety interlock) before shipment.