| 摘要 |
<p>In order to form a frontal seal between the top (1A) of the cap (1) and the terminal edge (C2) of the bottle neck (C), a lip (9) in the form of a discoid sheet diaphragm is provided, originating from the central area (1C) of said end (1A) and extending slightly away from it, said discoid lip (9) being deformed by the terminal edge (C2) of the neck when the cap has been screwed on to the neck, until it is made to ride over an internal edge (1E).</p> |
