Food plastic composite packaging bags are often used in people's lives, but they must be used carefully. Some plastic packaging is toxic and cannot be used to directly load food.
First, use eye observation
The non-toxic plastic bag is white, transparent or slightly transparent, and the texture is uniform; the toxic plastic bag is colored or white, but the transparency is poor, the turbidity, the plastic surface is unevenly stretched, and there are small particles.
Second, listen with your ears
When the plastic bag is shaken by hand, the crisp sound indicates a non-toxic plastic bag; and the small and stuffy sound is a toxic plastic bag.
Third, touch by hand
Touching the surface of the plastic bag by hand, it is very smooth and non-toxic; it is toxic when it is sticky, bun, and waxy.
Fourth, smell with the nose
Non-toxic plastic bags are odorless; irritating or unpleasant taste is toxic.
Five, submerged test method
Put the plastic bag in the water, press it to the bottom of the water by hand, wait a moment, the non-toxic plastic packaging bag that floats out of the water, and the toxic plastic packaging bag that sinks under the water.
Sixth, the combustion method
The non-toxic plastic bag is flammable, the flame tip is yellow, the part is cyan, it is dripping like a candle tear when burning, it has a paraffin smell; the poisonous plastic bag is not easy to burn, it is extinguished from the fire, the flame tip is yellow, or black The bottom is green, softened and brushed, and can smell a pungent smell.
Hebei Deyi Company specializes in the production of food, daily chemical and electronic packaging products. All kinds of specifications can be customized, excellent quality, factory direct sales, website online consultation, http://hbdmbz.com/hotline 13363187250
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