| 摘要 |
A container closure for a container comprising: a disk shaped member including a circumferential rim extending about a periphery, the circumferential rim of the disk shaped member including an inner side wall (16), an outer side wall (18) extending around the inner side wall, and an top wall (20) interconnecting the inner side wall and the outer side wall. An indentation in the outer side wall forms a first rib (22b) with a generally convex profile facing opposite to the inner side wall. Second and third ribs (24a, 24c) are disposed along the inner side wall and each of the second and third ribs having a generally convex profile for providing leakage prevention and sealing of the container closure with the container. The second rib is positioned proximate to a top portion of the inner side wall and the third rib is positioned below the second rib when the container closure has the top wall in an uppermost orientation, the second and third ribs configured such that both seal against a flat inner surface of the container. The first rib is positioned higher than the third rib when the container closure has the top wall in an uppermost orientation. |
