发明名称 |
METHOD AND APPARATUS FOR CROSS-WEB COEXTRUSION AND FILM THEREFROM |
摘要 |
<p>A method and apparatus for making a segmented multicomponent polymeric film. The method includes providing at least two separated melt streams, including at least two different polymeric compositions, that are separated in a first separation dimension; dividing in a second separation dimension substantially orthogonal to the first separation dimension at least some of the separated melt streams into at least two segmented flow streams; redirecting at least some of the segmented flow streams, with at least some of the segmented flow streams being sequentially redirected in both separation dimensions; and converging the segmented flow streams into a segmented multicomponent polymeric film. A segmented multicomponent polymeric film having projections is also presented, the film having a top surface and a bottom surface, each surface having a different arrangement of polymeric segments that at least partially alternate along the film's cross direction and extend continuously in the film's length direction.</p> |
申请公布号 |
EP2401128(A1) |
申请公布日期 |
2012.01.04 |
申请号 |
EP20100746728 |
申请日期 |
2010.02.24 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
HOIUM, TRAVIS B.;HANSEN, BRENT R.;BIBEAU, MATTHEW J.;SLAMA, DAVID F. |
分类号 |
B29C47/08;B29C47/06;B32B3/30 |
主分类号 |
B29C47/08 |
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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