Accurate Identification Method For Food Plastic Packaging Bags

Food plastic packaging bags are commonly used in people's daily lives, but caution must also be exercised when using them. Some plastic packaging bags are toxic and cannot be used directly to store food.
1, Observation method with eyes
Non toxic plastic bags are white, transparent or slightly transparent, with a uniform texture; Toxic plastic bags are colored or white, but have poor transparency, are cloudy, have uneven surface stretching, and contain small particles.
2, Listen with your ears
When shaking the plastic bag vigorously with your hands, a crisp sound indicates that it is a non-toxic plastic bag; And the one with a low and muffled sound is the toxic plastic bag.
3, Touch with your hands
Touching the surface of the plastic packaging bag with your hand is very smooth and non-toxic; Sticky, astringent, and waxy hair are toxic.
4, Smell with your nose
Non toxic plastic packaging bags are odorless; Anything with a stimulating odor or abnormal taste is toxic.
5, Submerged test method
Put the plastic bag into the water, press it to the bottom with your hand, wait for a moment, the one that floats to the surface is the non-toxic plastic packaging bag, and the one that sinks to the bottom is the toxic plastic packaging bag.
6, Combustion method
Non toxic plastic bags are flammable, with a yellow flame tip and some areas appearing blue. When burned, they drip like candle tears and have a paraffin odor; Toxic plastic bags are not easy to burn and will extinguish immediately upon ignition. The flame tip is yellow or black, and the bottom is green. They soften and can be brushed, and a pungent odor can be smelled.