发明名称 |
Heat-sealable, polyolefinic multilayer film, process for the production thereof, and the use thereof |
摘要 |
The disclosed heat-sealable, layered film comprises a polyolefinic base layer and at least one outer layer. The outer layer comprises a propylene-olefin copolymer prepared by means of a metallocene catalyst. The film is prepared by coextruding melts corresponding to the individual layers of the film, taking off the coextruded film over a take-off roll whose temperature is between 10 and 90° C., biaxially stretching and then heat-setting the resulting film, and optionally corona- or flame-treating the film, then winding it up in a wind-up unit.
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申请公布号 |
US6558808(B1) |
申请公布日期 |
2003.05.06 |
申请号 |
US19950395371 |
申请日期 |
1995.02.21 |
申请人 |
BASELL POLYOLEFINE GMBH |
发明人 |
DRIES THOMAS;SPALECK WALTER;WINTER ANDREAS |
分类号 |
B32B27/32;B65D65/40;(IPC1-7):B32B27/32 |
主分类号 |
B32B27/32 |
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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