发明名称 |
Method for producing a biaxially stretched film made of ethylene-vinyl alcohol copolymer |
摘要 |
<p>A method for producing a biaxially stretched film is provided, in which the method comprises, stretching a film made mainly of an ethylene-vinyl alcohol copolymer having an ethylene content of 15 to 70 mol % and a saponification degree of 80 mol % or more under heating; cooling the film; and subjecting the cooled film to a heat treatment; wherein a heating temperature during the stretching is 60 to 160° C., a cooling temperature is a temperature 30 to 100° C. lower than the heating temperature during the stretching, and a temperature for the heat treatment is 150 to 190° C. The thus obtained biaxially stretched film of the present invention has a small bowing coefficient.</p> |
申请公布号 |
EP1270179(B1) |
申请公布日期 |
2009.12.09 |
申请号 |
EP20020004003 |
申请日期 |
2002.02.22 |
申请人 |
KURARAY CO., LTD. |
发明人 |
OKADA, KAZUHISA;FUJII, NARIAKI |
分类号 |
B29C55/12;B32B27/08;C08J5/18 |
主分类号 |
B29C55/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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