Food bags can be heated in the microwave.1, Some plastic bags, such as food-grade plastic bags, can be heated in a microwave oven. Food-grade plastic bags usePEnon-toxic plastic,This kind of plastic bag will not melt even if it is heated for a long time,toxic free and safe. But pay attention to buying food-grade plastic bags produced by regular manufacturers,And read the labels on the packaging.2, most of the plastic bags can not be put into the microwave oven,Not all plastic bags commonly used in life are non-toxic,Some plastic bags contain additives that are carcinogenic to humans,Such as whitening agent, fluorescent powder, etc.,Both will reduce human immunity in the case of long-term use.3, Many plastic bags are easy to melt at high temperature,The hot food scalded the plastic bag,Melted plastic bags also cling to food,It is more harmful to the human body.It depends. Usually, the plastic products that can be put into the microwave oven for heating are marked with the hot and cold resistance temperature in detail.-20℃ to130℃, also-30℃ to180℃, most of them have precautions. If the temperature is too high, the food bag will be deformed, and ordinary plastics will release toxic substances, contaminate food, and endanger human health. Therefore, it needs to be determined according to the cold and heat resistance temperature marked on the food bag.Relevant knowledge expansion: Precautions for using plastic bags1, Minimize the use of plastic bags for cooked food. After the cooked food is packaged in plastic bags, it often causes food deterioration. After eating, food poisoning symptoms such as vomiting and diarrhea are prone to occur.2, Do not store alcoholic food in plastic bags. Alcoholic food and oily food will dissolve the lead in the polyvinyl chloride plastic bag into the food, and this kind of plastic bag cannot hold50food above the temperature. In addition, ordinary plastic bags cannot hold food and heat them in a microwave oven. Plastic bags are prone to produce carcinogens when heated, which is very harmful to human health. Consumers should use special microwave ovens to heat plastic films for heating.31. Most of the commonly used food plastic bags are made of polyethylene film, which is non-toxic, so it can be used to hold food. There is also a kind of film made of polyvinyl chloride, polyvinyl chloride itself is non-toxic, but the additives added according to the purposes of the film are often harmful substances to the human body and have certain toxicity. Therefore, this kind of film and the plastic bag made of this film are not suitable for holding food.41. Before using plastic bags to hold food, you must carefully check whether there are foreign objects in the material of the plastic bags, the handle is rough, or there is a peculiar smell. Such plastic bags may be processed from waste plastics, which are likely to endanger human health.5, Try not to use unmarked”food special bag”and”QSLogo and number”This double labeled plastic bag holds food.