SEPARATOR ROLL, METHOD FOR PRODUCING BATTERY, AND METHOD FOR PRODUCING SEPARATOR ROLL

摘要

The present invention provides a separator roll (10) and the like including a core suited for reuse. The separator roll (10) includes: a porous separator (12) for use in a battery; and a core (8) around which the separator (12) is wound. The outer circumferential surface (S) of the core (8) has arithmetic mean roughness of not less than 3.7 μm, the outer circumferential surface (S) being in contact with the separator (12).

主权项

1. A separator roll comprising:
a battery separator being porous; and a core around which the battery separator is wound, the core having an outer circumferential surface whose arithmetic mean roughness is not less than 3.7 μm, the outer circumferential surface being in contact with the battery separator.