| abstract |
To provide a separator for a non-aqueous secondary battery having an adhesive porous layer containing a polyvinylidene fluoride-based resin and having a wide temperature range of hot press capable of realizing sufficient adhesion between an electrode and the separator. The adhesive porous layer comprises: a porous base material; and an adhesive porous layer provided on one or both sides of the porous base material and containing a polyvinylidene fluoride resin and a layered clay mineral. The separator for non-aqueous secondary batteries whose weight is 0.5-2.0 g / m < 2 > in the single side | surface of the said porous base material. The layered clay mineral is at least one selected from hectorite, saponite, stevensite, beidellite, montmorillonite and swellable mica, and is a layered clay mineral treated with an intercalating agent for non-aqueous secondary batteries Separator. [Selection] Figure 1 |