If PET bottles and PVC bottles are mixed together, we are talking about transparent bottles. PET bottle molding is carried out in two steps, that is, injection molding first and then blow molding, so there is an injection port at the lower end of each PET bottle, just take a look and you will know. PVC is molded by blow molding and does not need to be injected, so there is no injection port. Therefore, when a bottle is picked up, it is PET with an injection port, and the one without it is PVC.

If it is mass production, steam the total bottle with steam, the PVC after high temperature steam will become opaque, and the PET will still be transparent, which is easy to recognize and save trouble, and the steamed label tape will Automatic degumming, just tear it off by hand.

The bottle flakes are not easy to recognize. They can only be boiled or steamed. After boiling or steaming, the PVC becomes opaque, and the PET is still transparent. If the opaque is selected, the PET is pure.