| 摘要 |
A top lid for beverage cans (1) with an opener integrated sanitary cover (8) is disclosed. The sanitary cover (8) is designed to cover the area around the opening piece (3a) defined on the top lid by a depressed seam (3c), thus protecting the lip contact portion of the top lid from atmospheric impurities and keeping the can sanitary during storage of the can. The sanitary cover (8) also has a reinforced opener part (13), which presses down the opening piece (3a) and breaks the piece along the depressed seam (3c) when the cover is levered up. The opener part has a reinforcing rib (13b) improving the stiffness of the opener part (13) and so the opener part (13) reliably breaks the opening piece without failure even though a high pressure acts on the interior surface of the opening piece. The configuration and arrangement of the reinforcing means for the opener part may changed in accordance with the design conditions of the can, or the interior pressure acting on the opening piece and the size of the can. The sanitary cover (8) also has a thumb-operable resilient dome (6) used for elastically raising up the cover when a thumb presses the dome down.
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