Separator core and separator roll
AssigneeSumitomo Chemical Company, Limited
InventorsYosuke TSUKUDA, Daizaburo YASHIKI
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Abstract
The present invention efficiently avoids distortion at an edge and achieves a separator core which has strength. The present invention achieves: a separator core in which an outer cylindrical part has a linearly inclined face at an edge of an outer peripheral surface thereof; and a separator roll including the separator core and a separator for a nonaqueous electrolyte secondary battery wound around the separator core. The present invention provides a method of producing the separator roll.
Claims8
A separator core around which a separator for a nonaqueous electrolyte secondary battery is wound or is to be wound, comprising:
- an outer cylindrical part;
- an inner cylindrical part provided inside the outer cylindrical part;
- and
- support parts that are provided between the outer cylindrical part and the inner cylindrical part and that extend in radial directions to connect to the outer cylindrical part and the inner cylindrical part,
- the outer cylindrical part having a linearly inclined face at an edge of an outer peripheral surface thereof.
Dependencies are inferred from the claim text.