| 摘要 |
PROBLEM TO BE SOLVED: To provide a nonwoven fabric for a power storage device separator, which is superior in tensile strength, piercing strength, and the flexibility in winding a separator and achieves good balance among them.SOLUTION: A nonwoven fabric for a power storage device separator according to the invention comprises: a conjugated diene based (co)polymer having a polymer block (A) including a constitutional unit (a-1) originating a first conjugated diene compound and having a vinyl bond content less than 30 mol%, and a polymer block (B) including a constitutional unit (b-1) originating a second conjugated diene compound and having a vinyl bond content or 30 mol% or more; and a thermoplastic resin.SELECTED DRAWING: None |
