Since the summer, not into the evening, the capital’s streets and alleys have sprung up many food stalls, spicy hot, kebabs and other snacks are available, food stalls will not close until one or two o’clock in the morning. In these stalls, the stall owners are just cooked food directly on the bowl with a white plastic bag. After eating, just throw the plastic bag, you can avoid the trouble of washing the bowl. Rolling hot snacks placed in the “bag bowl”, the bowl of plastic bags after a high temperature, the bottom of the bag appears to be very thin, as if to melt, and emit a plastic smell, people can not help but ask: this “bag bowl” toxic? Real food bags can be filled with hot, hot food, but also into the microwave oven. But the manufacture of food bags of plastic is very expensive, and now the streets to serve food transparent, very thin bags are processed from PVC as raw materials. Illegal production of PVC plastic bags, most of which are made of recycled waste plastic, including industrial and medical waste, this waste plastic, once used for food, will damage human health. Relevant food regulations, packaging food should meet the relevant national standards of plastic made of bags, improper ways to produce poor-quality plastic bags contain a large number of harmful substances, people’s long-term consumption is harmful to health. How to identify plastic bags? 1, shaking detection method grab the plastic bag shaking, non-toxic plastic bags sound crisp, while the toxic plastic bags sound muffled. 2, hand touch detection method non-toxic plastic bags are milky white or colorless transparent, hand touch with a sense of lubrication, the surface seems to have wax; toxic plastic bags cloudy color or yellowish, feel sticky. 3, floating detection method plastic bags into the water, non-toxic plastic bags can float to the surface, toxic plastic bags do not float up.