Title:
電池用セパレータ及び製造方法、並びに二次電池
Document Type and Number:
Japanese Patent JP4686182
Kind Code:
B2
Abstract:
To provide a laminate excellent in shutdown function and strength, its manufacturing method and a secondary cell using the laminate.
The laminate comprises a base material layer and the closure layer laminated at least on one side of the base material layer. The base material layer has a large number of through-holes and contains a plastic A while the closure layer has a large number of through-holes and contains a plastic B and a foaming agent. Further, the plastic B has a softening temperature lower than that of the plastic A and the foaming agent is expanded at a predetermined temperature or above.
COPYRIGHT: (C)2006,JPO&NCIPI
Inventors:
Kunio Noda
Shinji Ikehata
Kazumi Mai
Shinji Ikehata
Kazumi Mai
Application Number:
JP2004382998A
Publication Date:
May 18, 2011
Filing Date:
December 29, 2004
Export Citation:
Assignee:
Keiwa Co., Ltd.
International Classes:
B32B5/32; B32B27/32; H01M2/16
Domestic Patent References:
| JP2077108A | ||||
| JP2003031208A | ||||
| JP8250097A |
Attorney, Agent or Firm:
Yoshihiro Tsunoda
Shinji Shinoda
Yasu Furukawa
Toshio Nishitani
Shinji Shinoda
Yasu Furukawa
Toshio Nishitani