发明授权
- 专利标题： Microporous polyolefin multi layer film and preparing method thereof
- 专利标题（中）： 微孔聚烯烃多层膜及其制备方法
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申请号： US13183748申请日： 2011-07-15
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公开(公告)号： US08801984B2公开(公告)日： 2014-08-12
- 发明人: Jang-Weon Rhee , Inhwa Jung , Gwigwon Kang , Youngkeun Lee
- 申请人： Jang-Weon Rhee , Inhwa Jung , Gwigwon Kang , Youngkeun Lee
- 申请人地址： KR Seoul
- 专利权人： SK Innovation Co., Ltd.
- 当前专利权人： SK Innovation Co., Ltd.
- 当前专利权人地址： KR Seoul
- 代理机构： Clark & Brody
- 优先权： KR10-2007-0138028 20071226; KR10-2008-0000711 20080103
- 主分类号： B29C44/04
- IPC分类号： B29C44/04 ; B29C44/06 ; B29C55/00 ; B29C47/06 ; B29C71/00 ; H01M2/16 ; B32B3/26
摘要：
The present invention relates to a multi-layered microporous polyolefin film for a battery separator and a method for preparing the same. The microporous multi-layered film of the present invention has a characteristics to have both the low shutdown temperature conferred by the polyethylene and the high melt fracture temperature conferred by the polypropylene and heat-resistant filler. In addition, it has the high strength and stability conferred by the micropores prepared under wet process and the high permeability and high strength conferred by the macropores prepared under dry process. Therefore, this multi-layered film can be used effectively to manufacture a secondary battery with high capacity and high power.