Sink-Float Tank System for PET Recycling
The Sink-Float Tank is a cornerstone in PET bottle recycling plants, offering unparalleled separation of PET flakes from lighter contaminants. By utilizing the density of water, this system is a must-have for any operation aiming to produce high-purity, valuable PET material.
Working Principle for PET Flake Purification
Our sink-float tank uses water's density (1 g/cm³) to purify PET flakes. When the mixed stream enters the tank, PET plastic sinks while lighter contaminants float, allowing for a clean separation.
- PET Flakes Sink
With a density higher than water, the valuable PET flakes sink to the bottom of the tank for collection by a screw conveyor.
- Contaminants Float
Lighter materials like PP/PE bottle caps and label fragments float to the surface, where they are removed by rotating drums.
Key Advantages
- High PET Purity
Effectively removes a significant portion of contamination from bottle caps and labels, a crucial step for producing high-quality PET flakes.
- Dual-Function Process
The system not only separates but also provides an additional washing stage for the PET flakes as they travel through the water.
- Optimized Soaking Time
Our standard 4 to 6-meter tank length ensures that PET flakes have sufficient time to soak and settle, maximizing separation efficiency.
- Durable Construction
The interior tank and rotating drums are made from Type 304 Stainless Steel, which is highly resistant to rust and corrosion.
Technical Specifications for PET Recycling
| Specification | Details |
|---|---|
| Interior Width | 1500mm – 2000mm |
| Total Length | 4 – 6 meters |
| Interior Material | Type 304 Stainless Steel |
| Exterior Frame | Carbon Steel |
| Screw Conveyor Motors | 5.5KW + 3.7KW |
| Rotating Drum Motors | 0.37KW + 2.2KW |
Frequently Asked Questions
The primary contaminants it removes are plastic bottle caps, which are typically made from Polypropylene (PP) or Polyethylene (PE). Since PP and PE are less dense than water, they float, while the heavier PET flakes sink.
A longer tank (we offer 4 to 6 meters) provides a longer residence time for the material in the water. This ensures that all the sinking PET flakes have enough time to fully settle at the bottom, leading to a more thorough and efficient separation from the floating contaminants.
Yes. All of our products, including the sink-float tank, can be customized. We can adjust dimensions and motor configurations to match your specific throughput requirements and facility layout.
Warranty & Installation
- 1-Year Limited Warranty
Each of our recycling machines includes a comprehensive one-year limited warranty, giving you peace of mind with your investment.
- Expert Installation Support
We provide professional installation services. Our experienced engineers can visit your site to assist with the complete setup and commissioning process.
Inquire Now
To get the latest prices and lead times for our Sink-Float Tank System for PET Recycling, please send us a message using the form below.
