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US 2018/0183030 A1Published application
Separator winding core, separator roll, and method of cleaning separator winding core
AssigneeSumitomo Chemical Company, Limited
InventorsJunji SUZUKI, Takamasa EGAWA
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Abstract
The invention provides for a reduction in the period of time necessary for recycling a separator winding core around which a nonaqueous electrolyte secondary battery separator is wound. The separator winding core is described by the Munsell color system as (i) a lightness of not less than 3.0 but not more than 9.2 and (ii) a chroma of not less than 0.5.
Claims8
A separator winding core around which a nonaqueous electrolyte secondary battery separator is to be wound,
- the separator winding core being described by the Munsell color system as (i) a lightness (value) of not less than 3.0 but not more than 9.2 and (ii) a chroma of not less than 0.5.
Dependencies are inferred from the claim text.