ABSTRACT

Plastic is used widely for various purposes at home and work from its characteristics: inexpensive. moldable. light, strong, hygienic. colorful. etc. But. most of plastic goods are used only for a short time and then thrown away. We use and disuse a large quantity of plastics. The amount of plastics supplied in Japan was about ten mililon tons in 1990. The amount of plastics discharged was 3.13 million tons as domestic wastes. 2.44 million tons as industrial wastes. and 5.57 million tons in total.