| 摘要 |
<p>An easy-to-open type crown cap has an inclined tongue element and two non-intersecting score lines extending from two sides of the tongue element toward the internal side of the crown cap and is easily removed therefrom by hand without the need of using any auxiliary openers. The tongue has a longitudinally extending reinforcing ribs of a length slightly greater than the crimps in the skirt, and a lower end edge portion of the tongue is warped to reinforce the tongue. The cap has a pair of circumferentially spaced apart notches extending upwardly from a lower edge of the skirt in registry with opposite edges of the tongue, and a pair of weakened score lines extending upwardly from the notches across the skirt.</p> |
