This is a trial run of our 1500kg/hr Triple Row Sink Float Tank for a customer in the US. In this video we used PET flakes for the trial run. In terms of cleaning, its efficiency is quite good as its washing length is equal to three normal sink float tanks.
Frequently Asked Questions
What does a sink float tank do in PET recycling?
A sink float tank separates PET flakes from lighter contaminants by density. PET sinks in water while lighter materials — such as label fragments and cap plastics — float and are skimmed off. It is a simple, chemical-free separation stage that improves flake purity before drying, and it typically sits between the washing and drying stages of the line.
What is special about the triple-row design?
This triple-row tank has a washing length equal to three normal sink float tanks, which gives flakes a much longer travel path through the water. The extended residence time allows more thorough separation and cleaning in a single unit, and as the trial video shows, the cleaning efficiency is quite good.
What capacity is this sink float tank rated for?
The unit shown in the video is rated for 1,500 kg/h and was trial-run for a customer in the US. Sink float tanks are typically sized to match the overall washing line capacity, so if your line runs at a different throughput, the tank dimensions and configuration can be adjusted accordingly.
What materials can a sink float tank process?
This trial run used PET flakes, which are the most common application. In general, sink float separation works for any flake stream where the target plastic and the contaminants differ in density relative to water. Share your material mix with our team and we can confirm whether the process suits your feedstock.
How does the tank integrate into a complete washing line?
The sink float tank is typically installed after the washing stages and before final drying. Washed flakes enter one end, travel the length of the tank while separation takes place, and clean flakes discharge from the far end toward the dewatering equipment. It connects to the rest of the line with standard conveyors.