When using hot food in daily life, please pay attention to the following three types and do not use plastic bags indiscriminately: one can not put food and can only be used to hold building materials or garbage; The second kind is used for clothing; The third kind can be barely used to hold food.

Some of these three kinds of plastic bags contain "toxins". For example, polyvinyl chloride plastic is a toxic variety, and its raw materials are non-toxic, but toxic and olefinic materials are added in the process of making plastic bags. Plastic bags with particularly dark colors, such as black, red and dark blue, are made from recycled waste plastic products, which is very harmful to human body, so they can not be used for food. Plastic bags suggest that some businesses use waste plastic bags. The main component of waste plastic is PVC. If it is combined with inferior additives that do not meet national regulations or seriously exceed the standard in the processing process, it will produce strong carcinogens. When such plastic bags are used to package food, fruits and vegetables, harmful substances will be adsorbed on the food, which is difficult to remove even if washed. If the PVC plastic bag is used to contain food with temperature above 50 ℃ ~ 60 ℃, the lead in the bag will dissolve into the food, and the plastic bag will release toxic gas and invade into the food.

Long term human intake will seriously damage health and lead to disease. In particular, when hot food is put into plastic bags, the high temperature will make the toxic substances in plastic absorbed by food, and once they enter the human body, they will cause accumulated towel poison. Therefore, plastic bags must not be used indiscriminately when loading hot food.