| 摘要 |
<p>A crown seal as used for sealing the pouring openings of bottles, has ribs formed in the skirt thereof, of substantially the same depth throughout their length and are broader at their radially outer ends, so that each rib ends in a more or less arcuate, relatively long peripheral edge. Upon application to the bottle, the peripheral edge of each rib crumples to provide a central depression therein.</p> |
