Patent ID: 8486554
Filing Date: 2013-07-16
Classification: H01M,Y02E

Abstract:
1. An alkaline battery separator, comprising: a fused fiber layer in which first fusible fibers having a fiber length of 1 to 15 mm are fused, and a fine fiber layer adjacent to the fused fiber layer and comprising fine fibers having a fiber length of 1 to 15 mm and an average fiber diameter of 5 μm or less and second fusible fibers having a fiber length of 1 to 15 mm, which are fused in the fine fiber layer, and wherein part of the fine fibers are incorporated into the fused fiber layer so that, in the event of delamination between the fused fiber layer and the fine fiber layer, delamination occurs in the fine fiber layer, wherein the shape of the separator is maintained only by the fusion of the first and second fusible fibers and the incorporation of the fine fibers into the fused fiber layer, and wherein the tensile strength per unit mass per unit area of the separator is 3 N or more, as a value measured using a separator sample with a width of 5 cm.