How to tell whether plastic bags meet food standards?


Release time:

2018-12-25

The first thing to look at is whether there is a "food use" mark on the appearance of the plastic bag. Usually this logo should be on the front of the packaging bag, a more eye-catching position. Secondly, look at the color. Generally speaking, colored plastic bags mostly use recycled materials from waste plastics and cannot be used for food. For example, some black plastic bags used to hold fish, shrimp and other aquatic products or meat in some vegetable markets were originally used to hold garbage, and consumers should avoid using them. It depends on the presence or absence of impurities in the plastic bag. Put the plastic bag in the sun or light to see if there are black spots and openings. Plastic bags with impurities must use waste plastics as raw materials.

1. The first thing to look at is whether there is a "food use" mark on the appearance of the plastic bag. Usually this logo should be on the front of the packaging bag, a more eye-catching position. Secondly, look at the color. Generally speaking, colored plastic bags mostly use recycled materials from waste plastics and cannot be used for food. For example, some black plastic bags used to hold fish, shrimp and other aquatic products or meat in some vegetable markets were originally used to hold garbage, and consumers should avoid using them. It depends on the presence or absence of impurities in the plastic bag. Put the plastic bag in the sun or light to see if there are black spots and openings. Plastic bags with impurities must use waste plastics as raw materials.

2. Smell the plastic bag for any peculiar smell, whether it makes people feel sick. Qualified plastic bags should be odorless, while unqualified plastic bags will have various flavors due to the use of additives.

3. Qualified plastic bags have a certain strength and will not break as soon as they are torn; unqualified plastic bags are often weak in strength and easy to break due to the addition of impurities.

4. When the qualified plastic bag shakes, it will make a crisp sound; the unqualified plastic bag often has a "buzzing" muffled noise.

5. Put the plastic bag in the water and press it to the bottom of the water by hand. Wait for a while, the one that rises to the surface is the non-toxic plastic bag, and the one that sinks to the bottom is the 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, sticky and astringent to the touch, it is toxic.

7. Burning: Cut a corner of the plastic bag, put it on the fire, and burn it non-toxic. It will continue to burn after leaving the fire, and a yellow flame will appear, and the molten plastic will drop drop by drop like a candle. , Emits a paraffin odor; toxic, not easy to burn, after burning, it turns into a green flame, and there is a peculiar smell of choking nose.