Patent ID: 8097366

Claim:
An alkaline battery separator comprising a nonwoven fabric comprising an alkali-resistance synthetic fiber, a fibrillated organic solvent-spun cellulose fiber having a Canadian standard freeness value of 10 to 280 ml, and a mercerized pulp having a Canadian standard freeness value of not less than 550 ml, wherein the fibrillated organic solvent-spun cellulose fiber intertwines with the mercerized pulp, wherein the mercerized pulp comprises a mercerized product of at least one pulp selected from the group consisting of a hardwood pulp and a softwood pulp, wherein the proportion of the alkali-resistance synthetic fiber, the proportion of the fibrillated organic solvent-spun cellulose fiber, and the proportion of the mercerized pulp relative to the total amount of the separator are respectively 25 to 62% by mass, 5 to 25% by mass, and 33 to 50% by mass, and wherein the nonwoven fabric is a single-layer paper or a multi-layer paper comprising piled layers, each of the piled layers having the same compositional make-up, provided that the total amount of the separator is 100% by mass.