| abstract |
(57) [Summary] [PROBLEMS] To suppress an increase in a defective rate and a defect in battery performance due to a short circuit or the like of a thinned separator. Kind Code: A1 Four conditions of a hydrophilic polyolefin-based nonwoven fabric having an average thickness of 0.17 mm or less and having a limited Frazier permeability, an average pore size, a porosity, and a standard deviation value of a transmittance based on the total of Kayany ground. A separator for an alkaline battery, characterized by satisfying the following. |