Plastic ziplock bags are often seen in our daily lives and are used in a wide variety of applications such as food, clothing, and electronics. But as we all know, plastic bags are divided into toxic and non-toxic. How should we identify them?
Non-toxic plastic bags made of polyethylene, polypropylene and melamine, which can be used to hold food; toxic plastic bags, which are made of vinyl chloride, which can only be used for general packaging. If it is packaged with food, there is a danger of poisoning.
Put the plastic bag in the water and press it to the bottom of the water. Wait a moment, the non-toxic plastic bag will float out of the water, and the toxic plastic bag will sink under the water.
Touching the surface of the plastic bag by hand is very smooth and non-toxic. If the color is mixed, it is sticky and sticky, which is poisonous.
When shaking the plastic bag with your hand, the sound is very clear. It is a non-toxic plastic bag. If the sound is boring or there is no sound, it is a poisonous plastic bag.
Burning: Cut the plastic bag into a corner, put it on the fire, burn it, and burn it without poison. After it leaves the fire, it will continue to burn, and a yellow flame will appear, and the melt will fall down like a candle. Paraffin smell; toxic, not easy to burn, green flame after burning, and has a odor of nose.
Smell: Irritating and irritating and other abnormal odors, mostly toxic, or may be excessive plasticizers or other additives, the quality is poor.