| 摘要 |
An ethylene-vinylalcohol copolymer film is prepared by biaxially or multiaxially stretching a nonstretched ethylene-vinylalcohol polymer film having a moisture content of not more than 3.5%, said ethylenevinyl alcohol copolymer having an ethylene content of 20 to 55 mole % and a saponification degree of not less than 96 mole % and said stretching being conducted within a temperature range of 50 DEG to 150 DEG C. to such an extent that the film is expanded to an area 4 to 20 times the original area. |
