Title:
電池セパレータおよびその製造方法
Document Type and Number:
Japanese Patent JP4516796
Kind Code:
B2
Abstract:
A battery separator comprises a multi-layered film, individual layers of said film having been bonded together by heat and pressure, having a peel strength of greater than or equal to 40 grams per inch (1.6 g/mm) and a thickness of ≤ 25 microns. A method for making a battery separator comprises the steps of: extruding and winding up a first precursor film, extruding and winding up a second precursor film, unwinding the first and second precursor films, stacking up the first and second precursor films to form a single stacked precursor, laminating the single stacked precursor film, winding up the laminated single stacked precursor film, stacking up a plurality of laminated single stacked precursor films, and making microporous the stacked plurality of laminated single stacked precursor films.
Inventors:
Ronald W. Cole
Application Number:
JP2004231815A
Publication Date:
August 04, 2010
Filing Date:
August 09, 2004
Export Citation:
Assignee:
Celgard, Inc.
International Classes:
B29C47/00; B29D7/01; B32B27/32; H01M50/417; H01M50/457
Domestic Patent References:
| JP10241659A | ||||
| JP10237202A | ||||
| JP7307146A | ||||
| JP2000299094A | ||||
| JP11060763A | ||||
| JP7173323A | ||||
| JP10050286A | ||||
| JP10100344A | ||||
| JP8222197A |
Foreign References:
| US20030136500 |
Attorney, Agent or Firm:
Seiji Ohno
Koji Morita
Reiko Tanaka
Yuki Yamada
Koji Morita
Reiko Tanaka
Yuki Yamada