Its application has developed from the initial carbonated beverage to the present beer bottle, edible oil bottle, condiment bottle, medicine bottle, cosmetic bottle and so on. Today we're going to learn about sealed round pail authentication method.

1, smell the taste of PET is different from general plastic, burn it with a lighter, and then you will smell a very fragrant and comfortable taste (just burn a bottle to smell), if PET contains other ingredients, the taste is very pungent. You can't use a bottle with SEBS in it.

2. Look at the burned part, if it is too black or the oil drops quickly, most of the melting point is abnormal, which is often in PET film.

3. Wire drawing, when burning, pull the wire on the lighter to see if the wire is not long, and then pull out the wire to break, see the break point in the middle, whether the wire is rolled into a small circle, the more the volume indicates the melting point is high.

But in general, if it's a bottle, there shouldn't be any big problems. The key point is to identify whether it contains PVC, which is the fatal injury of PET. First take more samples, and then lay it in a sunny place, PVC is light blue in the sun. If you fold it in half there will be a white crease. The above is the visual identification, the accuracy is limited, mainly to see experience.

There is also a more practical and better way to buy an oven to set the temperature to 250 degrees and bake there for half an hour, if the goods contain PVC, the surface will have a lot of yellow spots; If the melting point is not enough, it will melt quickly.

In fact, there are many varieties of PET to do, such as PET crushed film from foreign factories, pulp blocks, rolled film with a length of less than 30 cm, which have different customer groups.

The identification of these goods is strongly required to be tested in the oven. In particular, PET rolls are a very short supply in the entire market, the general length of more than 80 to 120 cm, the thickness of 3-5 silk film price is very high (white transparent).

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