Patent ID: 11936067
Assignee: KURARAY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An alkaline battery separator, comprising:
an alkali resistant fiber and
a binder,
wherein the alkaline battery separator has two surfaces: a surface A and a surface B,
the surface A is smoother comparing with the surface B and has an arithmetic mean surface roughness Ra (A),
the surface B is rougher and has an arithmetic mean surface roughness Ra (B),
the alkaline battery separator comprises the binder in an amount of from 5 to 20% by mass based on a total mass of the alkaline battery separator,
a value obtained by dividing the arithmetic mean surface roughness Ra (A) by the arithmetic mean surface roughness Ra (B) [Ra (A)/Ra (B)] is from 0.700 to 0.980, and
the arithmetic mean surface roughness Ra (B) of the surface B is from 3.0 μm to 10 μm.