"Soarnol®" exhibits excellent barrier properties not only for oxygen but for a variety of other gases as well. It also has excellent chemical and oil resistance that enable it to be used for a wide variety of other non-food applications, such as the plastic fuel tanks for automobiles that have come to be used in recent years. As "Soarnol®" is composed primarily of carbon, oxygen and hydrogen, it emits no toxic gases when burned, so it has attracted a great deal of attention as a material that does not place a great burden on the environment.