How to Correctly Identify and Use Plastic Food Bags?

The detection of plastic bags can use the following methods to detect toxic and non-toxic plastic bags.

Sensory testing method: non-toxic plastic bags are milky white, translucent, or colorless and transparent, flexible, smooth to the touch, and waxy on the surface; toxic plastic bags are cloudy or light yellow in color, and feel sticky and astringent.

Water testing method: Put the plastic bag in the water and press it into the bottom of the water. The non-toxic plastic bag has a small specific gravity and can surface. The toxic plastic bag has a large specific gravity and sinks.

Supermarket Food Plastic Bags

Fire detection method: non-toxic polyethylene plastic bag is flammable, the flame is blue, the upper end is yellow, and it drips like candle tears when burning, has a paraffin smell, less smoke, and toxic PVC plastic bags are not flammable and away from the fire When it is extinguished, the flame is yellow, the bottom is green, it can be softened and can be drawn, and it has a pungent odor of hydrochloric acid.

Smell detection method: Plastic bags made of recycled materials have an unpleasant smell.

Shake detection method: grasp one end of the plastic bag with your hand and shake it vigorously. Those with a crisp sound are non-toxic; those with a dull sound are poisonous.

Use of plastic bags

Although the plastic food packaging of formal production is safe, it is necessary to pay attention to the method in use, otherwise it will bring negative effects.

Do not use plastic bags for high-temperature food for a long time: In daily life, people often see people use plastic bags for steaming fried food, such as fried cakes, fried dough sticks, etc., and some people put plastic bags on tableware for customers use. Plastic bags contain hot food directly ingested. When the temperature exceeds 50 ℃, the plastic bags will release toxic gas. Long-term use of such plastic bags will cause dizziness, nausea, vomiting, diarrhea, etc. It can lead to lead poisoning and increase the probability of cancer.

Do not use general plastic bags to heat in a microwave oven: use a microwave oven to heat food, preferably a microwave oven special plastic bag and special container.

Do not use general plastic bags to pack food and store it in the refrigerator: use plastic wrap for refrigerated and frozen food in the refrigerator instead of ordinary plastic bags. Due to the special technology and raw materials of the cling film, it has good air permeability and fresh-keeping performance. However, if the ordinary plastic bag is used for a long time, the food will quickly deteriorate and rot, failing to achieve the purpose of fresh-keeping.

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