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How To Differentiate PET Bottles And PVC Bottles
- May 23, 2018 -

The molding of the PET bottle is divided into two steps, the first step is injection, the second step is blowing. Therefore, there is a sprue at the bottom of every PET bottle. PVC bottle is molded by blow molding.It doesn't have to be injected, so there is no sprue. Through this feature, it is easy to distinguish these two kinds of bottles. 

If there is large-lot production, they can be identified by steam.After high temperature steam, the PVC bottle will become opaque. On the contrary, PET bottle will still be transparent.

In summary,the distinction between the two is relatively simple.