| 摘要 |
The size of portions that are included in joining depressions and do not contribute to joining is reduced. A layered body of sheet-like members includes: a first sheet-like member that includes a plurality of through holes having a same longitudinal direction; a second sheet-like member on which the first sheet-like member is placed; and a plurality of joining depressions that are formed in at least either one of the first sheet-like member and the second sheet-like member, and that joins the first sheet-like member and the second sheet-like member to each other, a longitudinal direction of each of the joining depressions slanting with respect to the longitudinal direction of the through holes.
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