| 发明名称 |
Polymeric films |
| 摘要 |
<p>A polyolefin film having a base layer of a polypropylene-based resin including microvoids formed by stretching a polypropylene-based resin containing the beta-form of polypropylene, and a heat seal layer on the base layer. When such films are heat sealed, the heat seal area becomes transparent, thereby providing an indication of seal integrity.</p> |
| 申请公布号 |
EP0865911(A1) |
申请公布日期 |
1998.09.23 |
| 申请号 |
EP19980104779 |
申请日期 |
1998.03.17 |
| 申请人 |
HOECHST TRESPAPHAN GMBH |
发明人 |
DAVIDSON, PAUL MALCOLM MACKENZIE;BIDDISCOMBE, HELEN ANN;GOVIER, REBECCA KAREN;OTT, MARC FRITZ MANFRED |
| 分类号 |
B32B27/32;C08J5/18;C08K5/20;(IPC1-7):B32B27/32;B32B27/18;C08K5/00 |
主分类号 |
B32B27/32 |
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