The General Office of the State Council recently to the people’s governments of provinces, autonomous regions and municipalities directly under the Central Government, the State Council ministries and commissions, agencies directly under the State Council issued a “notice on limiting the production and sale of plastic shopping bags. The notice points out that since June 1, 2008, in all supermarkets, shopping malls, marketplaces and other retail venues to implement a paid plastic shopping bags system, no free plastic shopping bags. Plastic bags are convenient and easy to use, permeating all aspects of our daily lives. Plastic bags provide convenience at the same time, in addition to the impact on the environment, but also endanger our health. Use plastic bags to hold food, it is likely to make the body intake of toxins. 1, plastic bags have health-hazardous components (1) polyvinyl chloride: polyvinyl chloride monomer absorbed by the gastrointestinal tract, part of the whistle discharge, the other part of the decomposition into ethanol and monochloroacetic acid. These substances can have a toxic effect on the nervous system, bones and liver, leading to the development of angiosarcoma. Ethanol can damage the body’s nerves, causing dizziness and blurred vision, and in serious cases, even cancer. (2) lead stearate: lead stearate is a stabilizer of polyvinyl chloride plastic bags, high temperature lead stearate in plastic bags will dissolve into the food. Lead stearate is very easy to precipitate, and once it enters the body will cause accumulative lead poisoning. These toxic substances and food eaten together, harmful to human health. (3) phthalates: phthalates, should be called phthalates, is an additive to the plastic process, mainly used to increase the flexibility of plastic products, a small amount of human contact will have some harm. Phthalates are low toxicity chemicals, damage to the central nervous system and liver. Plastic processing process using its dose will not be very large, and phthalates must be heated at high temperatures to free toxic monomers, qualified plastic products are basically not harmful to humans, the harm mostly exists in the production process. (4) Chemical compounding agent: In order to increase the transparency and elasticity, a certain amount of plasticizer is added to PVC cling film. After a long time of wrapping, the grease in the food can easily dissolve the harmful substances in the cling film, and the chemical compound in the plasticizer will be accelerated to release into the food when it is heated. These chemical compounds will damage the human endocrine system, disrupting the normal hormone metabolism, after consumption will cause women’s breast cancer, congenital defects in newborns, male sperm count reduction, and even mental illness. 2, it is best not to use plastic bags to directly hold food medical experts pointed out that food, especially cooked food, after packaging with plastic bags, often easy to deteriorate, people eat such spoiled food, easy to cause vomiting, diarrhea and other food poisoning symptoms. In addition, the plastic itself will release harmful gases, due to long-term accumulation in sealed bags, the concentration increases with the sealing time, resulting in bags of food contaminated to varying degrees, especially for children’s health and development. Plastic bags are mostly recycled plastic products. Insiders pointed out that the current market sales and use of plastic bags, the vast majority of small enterprises or family workshops around the production of a considerable number of recycled plastic products, the use of waste plastics collected at refuse collection points, industrial waste and medical institutions discarded plastic waste recycling process, without sterilization, they are privately processed into food bags into the market. These recycled plastic contains serious excess germs and carcinogens, with this plastic products packaged directly into the cooked food, will cause extremely serious consequences for the health of consumers. Colored plastic bags are harmful. First of all, colored plastic bags contain organic dyes, such as a variety of aromatic hydrocarbons, these chemicals will have a certain impact on human health. Secondly, colored plastic bags are mostly recycled waste plastic products re-processed, due to more impurities in the recycled material, manufacturers had to add pigments in it to cover. These chemicals are extremely harmful to the human body and can not be used to fill directly imported food. Regular consumption of plastic bagged food can cause chronic poisoning. Many of the current plastic bags are made of polyvinyl chloride, which contains polyvinyl chloride plastic bags, encountering high temperatures will release a variety of toxic substances. When the temperature exceeds 50 ℃, the toxic components inside the plastic bag will seep out, thus contaminating the food, causing harm to the human body. When the temperature reaches 80 ℃, it will meet the heat melting, the release of toxic substances to. Hot (cooked) food temperature are above 40 ℃, and just fried out of the doughnut and just out of the pot of soy milk, the temperature is about 90 ℃. With the increase in temperature, plastic bags in the toxic material activity intensified, easily absorbed by the food and into the belly of the eater, over time, will cause chronic poisoning of the eater. 3, how to select plastic bags can hold food (1) in order to effectively reduce the use of plastic products, the use of food bags and other plastic products should be carefully selected and used. When buying cooked food, snacks and other directly imported food, it is best to bring your own tableware or standard plastic food bags. Buy standard plastic food bags, it is best to go to the regular shopping malls to buy products of well-known brands, the outer bag of the product to have a Chinese logo, marked with the factory name, factory address and implementation standards. At the same time, refrigerated, frozen food should also use cling film or cling bags, do not use ordinary plastic bags instead. (2) banned colored plastic bags directly hold food. Consumers can use the following methods to identify whether plastic food bags are harmful. Generally harmless plastic bags are milky white, translucent or colorless transparent; flexible, hand touch with a sense of lubrication, the surface seems to have wax, flammable in the presence of open flame, can continue to burn after leaving the fire, no odor.