PVC film transparency is higher than that of polyethylene, the product is bright in color, smooth in hand, and has no waxy sensation. It can often smell special odor; it becomes harder after being cooled, and the use temperature is 60°C; relative density is greater than 1, and it can sink Underwater, this is the distinguishing feature of PVC; hard products are hard and smooth, and the sound is boring when struck; soft products are soft and elastic. PVC can not be packaged food.
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