| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum lid member that is hardly deformed by transportation or conveyance and can properly prevent deformation of a container after sealing.SOLUTION: An aluminum lid member 1 includes an aluminum layer and a sealant layer formed on one surface of the aluminum layer, and a joint surface on a side where the sealant layer is provided is joined to a container to seal the container. The aluminum lid member includes an expansion part 30 projecting toward a surface on the side opposite to the joint surface and a rib 31 formed on the expansion part 30. |
