Identification method for the identification of non-toxic plastic bag packing food

plastic bags in the packing bag of plastic as raw material for the production of all kinds of articles for daily use. Plastic bags are often used in life, but some bags are toxic, cannot be directly used to hold food, be careful when using. Simple introduce identification method for the identification of non-toxic plastic bag packing food:

1. Eye observation: non-toxic plastic white, transparent and opaque, uniform texture, toxic plastic bags for color mostly, but they also can be white, the white plastic bag poor transparency, turbidity, uneven surface tensile with small particles.

2。 Ears to listen: hard jitter plastic bags, crisp sound is not poisonous, sound small and boring is toxic plastic bags.

3。 Hand touch touch: touch the surface of the bag, the packing bag of non-toxic is very smooth, toxic is acerbity feeling waxy sticky hair.

4。 The packing bag of the nose to smell: is tasteless non-toxic, toxic generally has the smell of the stimulus or a flavour of the abnormal.

5。 Heavy water test: non-toxic plastic bags on the bottom surface, the packing bag of poisonous sink at the bottom.