Disposable lunch boxes were produced in the eighties, when it solves the many inconveniences in the people's meals to its convenience, fast, clean, prevent the spread of infectious diseases and other advantages, by the people's favorite. Coupled with its low price, restaurants, catering industry have adopted disposable lunch boxes, the disposable lunch boxes have become a beautiful landscape in urban life, it can be said that it is the product of the rapid development of China's fast food industry. Today, the country has a number of disposable plastic tableware products such as polyethylene foam production line with an annual output of more than 7 billion plastic lunch boxes, 6 to 80,000 tons per month, although the production of disposable lunch boxes can be described as a revolutionary breakthrough in the dining industry, but we can not ignore the lack of side. Disposable lunch boxes have many hazards to human beings: First, reduce the quality of the environment, most of the plastic products and disposable items, people use that is thrown away, plastic garbage is therefore full of various places, in the parks, stations, theaters, scenic spots and railroads along the wind, hindering the cityscape. Second, pollution of the agro-ecological environment, plastic belongs to polymer compounds, it is neither microbial erosion, but also not easy to decompose naturally, the degradation cycle is generally 200-300 years, the explanation of the process will also produce toxic substances, residual plastic waste in the soil will cause land consolidation, difficult to seepage of groundwater, the soil is infertile salinization, a substantial reduction in food production. Third, it can also be a crisis of human and biological health, due to the production of plastic products is added to the toxic additives, but the plastic waste stored for a long time, the toxic additives will be released, pollution of the atmosphere and water resources, a crisis of human and biological safety. Fourth, the disposable lunch box raw materials for oil, belonging to non-renewable resources, a serious waste of resources, and plastic lunch box disposal costs are too high, the use of value reduction, all of the above can be seen in the discussion of the seriousness of the harm it has done to human beings.
With the development of science and technology, mankind's environmental awareness is also increasing, the "white pollution" ban on the call is also higher than a wave, some large and medium-sized cities have launched a ban, in order to prohibit the use of disposable lunchboxes in some countries have been used in a number of ways, some of which are mainly administrative and technical two categories:
The administrative approach is mainly administrative and technological:
The administrative approach is mainly administrative and technological.
Administrative methods are mainly three: First, to strengthen management, centralized processing. Railroads from the second half of 1994, the section of the package, some of the trains using bags of garbage, prohibit the external throw, the effect is remarkable. Practice has proved: the key to control "white pollution" is to grasp the management. The second is banned. Hangzhou City, the earliest use of this method, from 1995 onwards, three orders issued five circulars, banning disposable plastic lunch boxes. Wuhan, Guangzhou, Dalian and other cities have followed suit, but because the alternatives are paper products or biodegradable plastic products, the quality also fails to meet the requirements, can not compete with it, so many violators. If we rely solely on administrative orders, do not take into account the economic leverage, it is difficult to operate, the effect is not good. Third, mandatory recycling. Clean waste plastic products can be recycled, such as granulation, oil refining, paint, do building materials, etc., but the premise is to waste plastic products into the garbage before classification and recycling. This is in line with the principles of minimization, resource utilization and harmlessness, which can avoid pollution and make full use of resources, reduce the amount of waste disposal and save land, and achieve certain economic benefits. This is an approach that addresses both the symptoms and the root causes. At present, the developed countries mostly adopt the recycling method, and Beijing and Tianjin also adopt this method, which has achieved results. There are two types of technical approaches: First, paper instead of plastic. The use of natural plant fibers as raw materials cartons, water in half a month after the decay, into the soil as fertilizer. But the new problem brought about by a large number of paper will cause water pollution, and products in terms of performance, cost and plastic products can not compete. Second, the use of degradable plastics. In the production process of plastic products to add additives, such as starch, cellulose, biodegradable agents, etc., can be degraded after three months of use, a single column into the debris can not be degraded, the pollution still exists, resulting in secondary pollution, but also the consumption of food. Fragments contain additives, but can not be recycled. 80's western countries have implemented this method, and then abandoned due to technical problems, and then recycling is the main last is to replace it with plant fibers, the birth of China's packaging is a revolution, it will become the eradication of "white pollution" preferred alternative to wait for the promotion of the product.