| 发明名称 |
COMPOSITE FILMS FREE FROM METAL LAYERS |
| 摘要 |
The composite film contains individual layers of polyvinyl alcohol, a polyolefin, an ethylene/vinyl alcohol and a polyolefin in that order and is comparable in its barrier properties to water vapor and gas with composite films containing metal layers without having any of their disadvantages.
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| 申请公布号 |
US5145731(A) |
申请公布日期 |
1992.09.08 |
| 申请号 |
US19900495557 |
申请日期 |
1990.03.19 |
| 申请人 |
WOLFF WALSRODE AG |
发明人 |
LUND, KLAUS;PREISS, HOLGER |
| 分类号 |
B32B27/08;B32B27/28;B32B27/30;B32B27/32;B32B27/34;B65D65/40 |
主分类号 |
B32B27/08 |
| 代理机构 |
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