| abstract |
An object of the present invention is to provide a laminated porous film having excellent properties as a separator for a non-aqueous electrolyte secondary battery, which is a laminated porous film that simultaneously satisfies communication, heat resistance, and processability. . In the present invention, a heat-resistant layer containing a filler (a), a resin binder (b), and a stretching aid (c) is laminated on at least one surface of a polyolefin resin porous film, and the air permeability is 2000 seconds / 100 ml. It is the laminated porous film characterized by the following. |