Separator and cylindrical secondary battery in which same is used
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsDaisuke FURUSAWA, Tomohiko YOKOYAMA
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Abstract
The disclosed separator is a separator of a belt shape having first and second long sides. The separator includes a substrate, an inorganic filler layer laminated on the substrate and containing an inorganic filler as a major component, and a resin layer laminated on part of the inorganic filler layer and containing a resin as a major component. At least part of the resin layer is formed in a first region of a belt shape and a second region of a belt shape. The first and second regions extend adjacent to the first and second long sides, respectively. A portion where the resin layer is not formed is present in a third region between the first region and the second region.
Claims12
A separator of a belt shape having first and second long sides, the separator comprising:
- a substrate;
- an inorganic filler layer laminated on the substrate and containing an inorganic filler as a major component;
- and
- a resin layer laminated on part of the inorganic filler layer and containing a resin as a major component, wherein
- at least part of the resin layer is formed in a first region of a belt shape and a second region of a belt shape;
- the first and second regions extend adjacent to the first and second long sides, respectively;
- and
- a portion where the resin layer is not formed is present in a third region between the first region and the second region.
Dependencies are inferred from the claim text.