Title:
A manufacturing method of a lamination porous film, and a manufacturing method of a lamination electrode sheet
Document Type and Number:
Japanese Patent JP6017446
Kind Code:
B2
Abstract:
Provided is a laminated porous film suitable as a non-aqueous electrolyte secondary battery separator, which includes a heat resistant layer excellent in morphological stability at a high temperature and ion permeability and more resistant to fall-off of a filler. A laminated porous film in which a heat resistant layer including a binder resin and a filler and a base porous film including a polyolefin as a principal component are laminated, wherein the filler included in the heat resistant layer substantially consists of an inorganic filler (a) having a primary particle diameter of 0.2 to 1 μm and an inorganic filler (b) having a primary particle diameter of 0.01 to 0.1 μm, and the particle diameter of secondary aggregates of the inorganic filler (b) is not more than 2 times the primary particle diameter of the inorganic filler (a) in the heat resistant layer.
Inventors:
Hirohiko Hasegawa
Hiroki Nishida
Yasuo Shinohara
Hiroki Nishida
Yasuo Shinohara
Application Number:
JP2013544203A
Publication Date:
November 02, 2016
Filing Date:
October 30, 2012
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B32B27/18; B32B5/18; B32B27/32; H01M50/403; H01M50/417; H01M50/429; H01M50/431; H01M50/451; H01M50/457; H01M50/489; H01M50/491
Domestic Patent References:
| JP2010123383A | ||||
| JP2004227972A |
Foreign References:
| WO2008123331A1 | ||||
| WO2005117169A1 | ||||
| WO2010128548A1 | ||||
| US20100112432 |
Attorney, Agent or Firm:
Hisashi Kato
Takashi Kuboyama
Takashi Kuboyama