How do you remove labels and caps?

There mainly three kinds of label; paper, BOPP and PVC. Paper and BOPP labels will be removed by bottle prewashing. Due to PVC label is hear shrinkage, we use label scrapping machine to break it and remove it by label blowing machine. As for caps, most of them were made from PP/PE. After crushing, we feed all material into floating separator. Due to the densities of PET(1.3) and PP/PE(0.9) are different, the caps will float on the floating separator and PET flake will sink onto the bottle of the machine.
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