"Soarnol?" exhibits excellent barrier properties not only for oxygen but for a variety of other gases. 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. Since "Soarnol?" is composed primarily of carbon, oxygen and hydrogen, it emits no toxic gases when burned, which has attracted a great deal of attention as an environmental safe material.