Due to its light weight, high strength, convenience and low price, plastic ton bags have been rapidly developed and widely used in the field of packaging materials since the 1970s, greatly facilitating people's lives. However, since most plastic packaging materials are difficult to degrade naturally, their packaging waste will form permanent garbage, which will pollute the environment. Therefore, when using and designing plastic packaging materials, full consideration should be given to the degradability, recycling possibilities, and recycling methods of plastic packaging materials. The government should also take measures to promote the research and development of degradable plastics to promote the development of circular economy.
According to the new Z statistics provided by the National Bureau of Statistics and the Federation of Light Industry, in 2005 the main economic indicators of China's plastic products industry achieved overall growth, an increase of more than 25%, and the completed industrial output value reached 501.1 billion yuan. According to industry analysts, although the price of plastic raw materials remained high in 2005, strong market demand, as well as the increase in exports, the development of new application areas and the increase in the output of high value-added products, still promote the overall growth of the industry's economic indicators. At present, packaging has become a major user of plastics, with an annual consumption of more than 6 million tons.
However, exquisite plastic packaging tends to turn into unused garbage in an instant. With the substantial growth of plastic packaging, environmental problems have become increasingly serious. In particular, disposable plastic packaging material waste is large, scattered, messy, and difficult to collect. Some of these rubbish are randomly discarded and scattered on the ground, polluting the city's appearance and environmental landscape, and having a negative impact on economic development and the ecological environment.
In order to solve this problem, the government, enterprises and the majority of scientific and technological workers have done a lot of work. Some advocates using less, restricting, or banning them; some advocate and formulate local regulations to enforce degradation of plastics; some propose to use economic means (taxes, fees) to guide consumption. Regrettably, many measures have had little effect. Restrictions and prohibitions have made ordinary people feel inconvenienced, and charges have increased the burden on ordinary people.
Facts have proved that modern society is inseparable from plastics. It is better to intercept and unblock, use materials with better performance and price ratio, and use technologies and methods that are more in line with the characteristics of the times to develop degradable plastics, and increase the recycling and reuse of plastic waste. It is the way out to solve the problem of white pollution. The author believes that the current recycling and processing of plastic packaging material waste should adopt a multi-channel and multi-channel method, and sort them according to the meaning of the sustainable development of the ecological environment. The first is recycling, and the second is recycling or incineration to obtain energy. , The third is landfill, and the fourth is replacement with biodegradable materials.
Recycling is mainly suitable for containers used for transportation and packaging, such as pallets, turnover boxes, large packaging boxes, and plastic barrels. For easily recyclable plastic packaging, physical and chemical modification can be used to regenerate, so that limited materials can be recycled. For those disposable plastic packaging containers that are difficult to recycle, incineration, landfill, or replacement with biodegradable materials will be good choices. Although it is difficult to point out which method Z is better, we should emphasize which method is more suitable. According to the actual situation in each area and field, the best choice is to choose the right one.
