发明名称 |
STRUCTURED FILM CONTAINING BETA-NUCLEATING AGENT AND METHOD OF MAKING THE SAME |
摘要 |
A structured film of a semi-crystalline polyolefin and a beta-nucleating agent is disclosed. The structured film has a backing and upstanding posts attached to the backing. At least a portion of the film typically includes beta-spherulites. In some embodiments, the backing is microporous while the upstanding posts have lower porosity. A method of making a structured film is also disclosed. The method includes extruding a melt of a polyolefin and a beta-nucleating agent in the presence of a tool to provide the structured film having upstanding posts on a backing and cooling at least a portion of the structured film to a temperature sufficient to form beta-spherulites. In some embodiments, the method further includes stretching the structured film containing beta-spherulites to provide micropores in the backing.
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申请公布号 |
US2013149488(A1) |
申请公布日期 |
2013.06.13 |
申请号 |
US201113324130 |
申请日期 |
2011.12.13 |
申请人 |
CHANDRASEKARAN NEELAKANDAN;3M INNOVATIVE PROPERTIES |
发明人 |
CHANDRASEKARAN NEELAKANDAN |
分类号 |
B32B3/30;B29C47/00;B32B3/06;B32B3/26 |
主分类号 |
B32B3/30 |
代理机构 |
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地址 |
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