First, cornstarch resin is promising for replacing plastic packaging materials Currently, many countries in the world are conducting research on replacing bio-degradable resins with existing plastic packaging. Recently, the "corn starch resin" successfully studied in Japan has broad prospects for development. This resin is made from corn and plasticized. The packaging materials made from it can be disposed of by burning, biochemical decomposition, insect feeding, etc., thereby eliminating the "white pollution" hazard.
At present, the number of plastic bags produced by corn resin in Japan is almost the same as that produced by plastic grains.
Globally, about 100 million tons of plastic products are produced each year, of which 30 million tons of disposable packaging materials, to solve the pollution caused by these materials will cost a lot of social costs. If corn resin can successfully replace some of the packaging plastics, it is estimated that there will be a market worth US$10 billion a year.
Second, the “over-packaging†of commodities is not advisable to prevent over-packaging not only greatly reducing the sources of plastic packaging waste, but also greatly reducing the resources of the earth. For example, under the conditions of rational choice of packaging, it is entirely possible to reduce the multilevel of sales packaging. The reuse of plastic packaging is also a way to reduce the source of packaging waste.
Third, adhere to the reuse of plastic packaging In fact, the reuse of plastic packaging in transport packaging has been an effective method. There is also the possibility of implementation in sales packaging, especially for daily consumer goods that have a large volume of sales and have a wide range of possibilities for packaging, reuse or refilling. For example, the foreign detergent industry is rapidly turning to concentrated products and related forms of refilling. Fabric softeners have been supplied in Europe and North America in the form of refilled enrichment products for many years, gaining widespread consumer acceptance.
4. The recycling of plastic packaging waste must adopt a comprehensive approach because not all plastic packaging wastes have the value of material recycling, especially large amounts of mixed plastic packaging waste and packaging of toxic substances (such as medicine bottles , pesticide bags, medical plastic waste), are not suitable for the use of materials recycling methods to deal with, but rely on chemical recycling or energy recycling law.
5. Before the country with unlimited potential for biodegradable plastic packaging, the country has included degradable plastic packaging in the priority areas of development. Degradable plastic packaging has great market potential in fields such as agriculture, daily chemicals, medicine, and food. It is predicted that in 2000 China's plastic packaging output will be more than 3 million tons, and nearly 2 million tons of plastic waste will be produced. Therefore, the development of degradable plastic packaging has broad prospects. However, it should be pointed out that degradable plastics cannot be regarded as a panacea for solving plastic packaging wastes, and there are still limitations in the application performance of packaging, especially whether it can adapt to a variety of food packaging, and it must be studied.