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How to correctly use plastic bags for food packaging

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correct use of plastic bags

plastic bags are bright in color, easy to carry and not afraid of falling and touching. They are widely used in daily life, industrial and agricultural production and are welcomed by consumers. However, plastic bags, especially food packaging bags, will be harmful to human health if they are used incorrectly. Therefore, consumers should pay attention to the following matters in the process of using plastic bags

first, try not to use plastic bags for cooked food. After packing cooked food in plastic bags, it often causes food deterioration. After eating, it is easy to have food poisoning symptoms such as vomiting and diarrhea. In addition, the plastic bag itself will also release harmful lifting, which will accumulate in a sealed environment for a long time, and the concentration will increase with time, thus polluting the food in the bag and affecting human health, especially the healthy development of children

Second, do not use ultra-thin plastic bags. Ultra thin plastic bags are light in weight and thin in thickness, but have strong load-bearing capacity. This is because plastic bag manufacturers have added plasticizers in the production process, which are extremely harmful to human health. National laws and regulations also prohibit manufacturers from producing and selling ultra-thin plastic bags

Third, do not use plastic bags for alcoholic food. Alcoholic food and oily food will dissolve the lead in the PVC plastic bag into the food, and this plastic bag can not contain food with a temperature of more than 50 degrees. In addition, ordinary plastic bags cannot contain food and be heated in the microwave oven. Heating plastic bags is easy to produce carcinogens, which is very harmful to human health. Consumers should use a special microwave oven to heat the plastic film. Consumers should use special food packaging bags for food, especially plastic bags with special dark colors, which are likely to be reprocessed from recycled plastics. They should resolutely avoid using them for food packaging

for identification, the first thing is visual inspection. The plastic bag of PE is generally milky white and translucent. Touch the surface of the plastic bag. The handle of PE is lubricated and the texture is hard and tough. PVC plastic bag is sticky and astringent; Secondly, you can shake the plastic bag with your hands. PE makes a crisp sound, and PVC makes a small and stuffy sound. If conditions permit, it can also be identified by combustion. The flame is blue, the upper end is yellow, and PE emits paraffin smell during combustion; Extremely difficult to burn, the flame is yellow, the upper end is green, and PVC emits the pungent smell of hydrochloric acid.

the correct use of food packaging bags is as follows:
1. Food packaging bags should not be heated in the microwave oven in daily life. When it is necessary to heat food packaging bags in the microwave oven, it is necessary to pay attention to the use of special food packaging bags for microblog to avoid damage to food
2. In daily life, high-temperature food should not be stored in food packaging bags for a long time. Plastic packaging bags contain directly imported hot food. When the temperature exceeds 50 ℃, the food packaging bags will release toxic gas. Long term consumption of high-temperature food in food packaging bags will cause discomfort such as dizziness, nausea, vomiting and diarrhea, and even lead poisoning and increase the probability of cancer
3. Because ordinary food packaging bags do not have good air permeability and fresh-keeping performance, ordinary food packaging bags are not used in daily life. Food is stored in the refrigerator. If ordinary plastic packaging bags are used for a long time, the food will deteriorate and rot quickly, which can not achieve the purpose of preserving freshness

don’t put overheated things into food bags.

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