| 摘要 |
<p>A closure for a container, includes a tamper-indicating band (11) with internal protrusions (22) for engagement under a bead on a container to prevent removal of the closure from the container after application thereto without breaking the tamper-indicating band (11). Each internal protrusion on the tamper-indicating band (11) comprises an elongated, inward projection (22) extending in a general direction around the band (11) and having a longitudinal axis inclined to the circumferential direction of the band (11) at a small angle so that each projection (22) has a helical configuration in relation to the tamper-indicating band (11). The leading end (29) of each projection (22) as deterined by the action of screwing the closure onto a container, merges smoothly with the immediately preceding part (23) of the tamper-indicating band (11) and increases gradually and smoothly in height in a rearward direction. Each projection (22) has a downward extension (24) with a smooth, outwardly and downwardly inclined surface (25), extending to, or close to, the lower rim (19) of the tamper-indicating band (11).</p> |
