Food plastic packaging bags are often used in our daily life, but it must be careful when using,Some plastic bags may be toxic, can’t be used directly to pack food, here we teach you some ways to identify it.
1. Observation with the eyes
Non-toxic plastic bags is white, transparent or subtranslucent, uniform texture, while toxic plastic bags is colorful or although it is white, but poor transparent, rather muddy, and the surface stretch is irregularly and have granule.
2. Ears to hear
When shook the plastic bags by hands with strength, it is non-toxic to sound clear while the sound of small and stuffy is toxic plastic bags.
3.Touch by hands
Touch the surface of the plastic bags, it is smooth for non-toxic bags and it is sticky & astringent & waxy for toxic bags.
4. Smell with nose
The non-toxic plastic bags: smells odourless ; the toxic bags : strong smell or abnormal odor.
5. Submerged test method
This test is to put the bag into the water and press it to the bottom, hole it a second, the non-toxic bags will be out of surface, while the toxic bag will sink in the water.
6. Burning method
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