
Description
A sink-float separation tank separates materials that float from those that sink. In PET recycling applications, as PET bottles are granulated whole, a significant portion of contamination requiring removal consists of plastic bottle caps, which are not manufactured from PET plastic. Instead, these caps are typically made from either polypropylene (PP) or polyethylene (PE).
How It Works
ASG Machine‘s sink-float separation tank utilizes water density to accomplish material separation. Water has a density of 1 g/cm³, causing any material with greater density to sink while material with lesser density will float. In PET bottle recycling applications, when the material stream enters the water-filled separation tank, PET plastic sinks to the bottom while PP/PE bottle caps float to the top.
Specially designed rotating drums move the floating material (contaminants) forward into a storage silo for collection. Screw conveyors positioned at the bottom of the separation tank collect the PET flakes, transporting them forward to the next processing stage.
Specifications
Extended material soaking time in water is ideal for the separation process. This not only enhances material cleaning but also ensures sufficient time for all sinking PET flakes to settle at the tank bottom. Therefore, ASG Machine offers a standard 4-meter separation tank with the option to extend it to 6 meters for enhanced separation efficiency.
To ensure the durability of our water separation tank, both the tank interior and the rotating drums are constructed with type 304 stainless steel, providing strong resistance to oxidation (rust) and corrosion.
| 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 | .37KW + 2.2KW |
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Place An Order
The general lead time for all single-piece, standard equipment orders is 30 days. For custom orders or complete washing lines, the lead time ranges between 60 – 90 days. The actual lead time depends primarily on the project’s complexity and our current machinery production queue at the time of ordering.
Get Customized Solution & Quote to discuss pricing and ordering details. Below is a brief summary of our ordering procedures.

