Dispute over whether the hottest white lunch box i

  • Detail

The investigation report also alleges that the replacement technology of new environmentally friendly tableware is not yet mature and there are "problems"

during the new year, a considerable proportion of the nearly 10000 tons of household garbage produced in Guangzhou every day are discarded foam lunch boxes. In recent years, there have been rumors about the "white pollution" caused by the manufacture of foamed plastic lunch boxes, and many cities have issued "white ban" one after another. However, a recent survey report from the green packaging branch of the Chinese society of Environmental Sciences once again set off a dispute over the harmlessness, toxicity and non toxicity of foam lunch boxes

foamed plastic lunch boxes, commonly known as "white lunch boxes", are mostly made of "polystyrene" materials. For a long time, many environmental protection experts and experts on whether the packaging materials are loose or damaged believe that under ordinary circumstances, the foamed plastic lunch boxes produced by this material are difficult to degrade, and it will take more than 200 years to "self destruct" in the natural environment. For example, landfill treatment wastes land resources, and incineration will also produce more than 10 kinds of toxic gases, causing air pollution

in this survey report, Li Peisheng, executive vice president of the green packaging branch of the Chinese Society for Environmental Sciences, believes that in the past, many foamed plastic lunch boxes were indeed produced from non degradable plastic materials on the market, but with technological progress, an improved product, degradable plastic lunch boxes, has emerged in recent years and gradually occupied the mainstream of the market. This kind of product, which has no big difference in appearance from the previous one, is completely absorbed by the natural environment in outdoor days, and has no malignant impact on the environment

Chinese people have two main views on the harm of foamed plastic lunch boxes: using it to hold high-temperature food will slowly release more than 10 toxins to dissolve in food, and it will cause cancer after eating; Polystyrene contains bisphenol, which is likely to cause reproductive dysfunction. Many citizens also found that many bubbles often appear when high-temperature liquid food is packed in styrofoam lunch boxes. This is the most direct suspicion of its toxicity. However, according to Li Peisheng, the common bubbles are not molten products, but the air in the pores on the surface of the lunch box overflows under the influence of high temperature. However, he also reminded that lunch boxes should not be heated in the microwave oven generally, because the temperature of the microwave oven is much higher than the boiling point of water, and the box will melt into the food and become inedible

Li Peisheng said that styrene is the most common residue of styrofoam lunch boxes, which was originally considered to be a "carcinogen". Later, the United States, Japan and other countries not only removed it from the list of "carcinogens", but also announced that it would not affect human endocrine. The regulation of styrene residue in the United States is 5000ppm, and the actual test result of "white bubble" tableware is lower than 1000ppm, "consumers don't need to worry"

according to the survey and statistics of relevant departments, at present, the consumption of fast-food boxes in China is about 12billion every year, but the new environmentally friendly alternative tableware on the market accounts for only 20% - 30%. People in the environmental protection industry generally believe that this is mainly caused by price. The cost of styrofoam lunch boxes is 78 cents per box, while the cheapest one is 15 cents. Li Peisheng pointed out that at present, the replacement technology of new environmentally friendly tableware is not yet fully mature. Plant fiber eco-friendly lunch boxes are not only made with lax sealing of the through wall opening, cracks at the interface, cracks in the finish layer and other phenomena, but also with a large number of pesticides and straightening devices on the surface of straw: the most common type of plastic extrusion waste is eccentric fertilizer and animal feces, which are difficult to remove, and the sanitation is difficult to meet the standard; The production of paper lunch boxes may bring pollution to the paper industry

whether the foamed plastic lunch box is toxic to people and harmful to the environment is still the focus of debate. Many experts believe that, in any case, "recycling" is the ultimate way out for "whitening". It is indisputable that the waste of foamed plastics can be recycled. Even if there is no environmental protection treatment technology for the time being, it can be stored for a while. In fact, this is also the practice of many developed countries

little information: "ban white" became "ban white"

in 1999, the former State Economic and Trade Commission issued Order No. 6, requiring the elimination of foam plastic tableware by the end of 2000. Around this time, Beijing, Tianjin, Nanjing and more than a dozen other cities have issued bans and implementation schedules, but for various reasons, it is difficult to implement them. Since 2000, Shanghai has collected 3 cents from each manufacturer as the labor fee of the recycler, transportation, management and law enforcement fee and waste lunch box treatment fee (1 cent each). At present, the recovery rate is 60%

since the late 1980s, Japan, South Korea and other countries have legislated to ban and restrict the use of foamed plastic tableware, but it was found that it could not solve the environmental problems well. Because there was no suitable substitute, many bans were revoked, some were left undone, and some were modified to achieve a certain recycling rate

source of information:

Copyright © 2011 JIN SHI