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How to identify whether plastic bags meet food standards?

by:FAST SINCERE     2020-02-25
1. First of all, it depends on whether the appearance of plastic bags has the sign of 'food use. Usually this sign should be on the front of the bag, more eye-catching position. The second is to look at the color. Generally speaking, most colored plastic bags use recycled materials from waste plastics and cannot be used to hold food. For example, black plastic bags used in some vegetable markets to hold fish, shrimp and other aquatic products or meat were originally used to hold garbage, and consumers should avoid using them. Finally, it depends on whether the plastic bag has impurities. Put the plastic bag in the sun or under the light to see if there are black spots and no holes. Plastic bags with impurities must have used waste plastics as raw materials. 2, smell the plastic bag has no smell, whether it makes people feel sick. Qualified plastic bags should be odorless, while unqualified plastic bags will have various tastes due to the use of additives. 3, qualified plastic bags have a certain strength, will not break a tear; However, unqualified plastic bags are often of poor strength and easy to crack due to the addition of impurities. 4. When the qualified plastic bag shakes, it will make a crisp sound; Unqualified plastic bags are often 'buzzing. 5, put the plastic bag in the water, and press it to the bottom of the water with your hand, wait a moment, the surface is a non-toxic plastic bag, and the bottom is a toxic plastic bag. 6. Touch the surface of the plastic bag with your hand. It is very smooth and non-toxic. If the color is mixed, it is sticky and sticky, it is poisonous. 7. Burning: cut off the corner of the plastic bag and put it on the fire. The non-toxic one will burn immediately. After leaving the fire, it will continue to burn and a yellow flame will appear, and the melt is like a candle that drops and drops down, emitting a paraffin smell; Toxic, not easy to burn, it is green after burning, and has a smelling smell. Food Bag
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