The hottest plastic bags contain food. 2

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At present, people are always worried about plastic food packaging bags in one way or another, and some even think that plastic is toxic. However, industry experts believe that plastic food packaging bags can be used safely, but do not use colored plastic bags for food

it is reported that the sanitary performance of plastic polyethylene, polypropylene, polyester, polystyrene, etc. currently used for food packaging is qualified, and it is safe to use for food packaging. Do not turn the handwheel. However, consumers cannot distinguish between food and non food plastic bags, so a considerable number of unqualified plastic bags are used for food packaging, which seriously endangers people's health

relevant experts specially remind that when using plastic bags to package cooked food, snacks and other direct food, it is best not to use colored plastic bags. Because the pigment used for dyeing plastic bags has strong permeability and volatility, it is easy to exude when it meets oil and heat. If it is an organic dye, it will also contain aromatic hydrocarbons, which will have a certain impact on health. In addition, many colored plastic bags are made of recycled plastics. Because there are more impurities in recycled plastics, the manufacturers have to add pigments to cover them up. But some plastic bags made of recycled plastic are also white. Experts also pointed out that there is no particularly effective way to distinguish plastic food bags, but one thing is certain that plastic bags produced by informal manufacturers and sold at street stalls should not be used for food packaging. In addition, if the plastic bag has a special smell, it cannot be used to hold food on the basis of the layout optimization design scheme

although plastic food packaging bags are safe, we should also pay attention to methods in use. Don't pack high-temperature food in plastic bags for a long time. In daily life, it is often seen that some people use plastic bags to pack steaming fried cakes, fried dough sticks, etc. if they are eaten in a short time, there is no great harm, but covering overheated food in the bag for a long time will make some substances in the plastic seep out and affect health. When heating food in a microwave oven, it is best to use special plastic bags and containers for the microwave oven. Fresh keeping film should be used for refrigerated and frozen food in the refrigerator instead of ordinary plastic bags. In addition, you should also recognize the QS mark when buying fresh-keeping film. A brand of fresh-keeping film that passed the QS certification not long ago, when holding the publicity and education activities of buying fresh-keeping film and recognizing the QS mark, reminded that it was necessary to recognize the fresh-keeping film with the QS mark before it could be purchased with confidence. The special process and raw materials of fresh-keeping film have good air permeability and fresh-keeping performance. 1 Thank you for choosing Jinan assaying friction and wear testing machine. If ordinary plastic bags are used for a long time, the food will deteriorate and rot, and the purpose of keeping fresh will not be achieved

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