| 摘要 |
The invention provides a container closure moulded in one piece from a plastics material and comprising a crown (11), a dependent skirt (12), the radially inner surface of which is formed with a screw thread (13), a surface (16) which is flared in a direction away from the top being formed on the internal surface of the skirt where it joins the crown and an annular resilient fin (18) extending downwardly and outwardly from an articulation position (26) on the underside of the top at position spaced radially inward of said flared surface having a length such as to permit at least its portion adjoining its free edge to lie against the flared surface (16), wherein the fin is deformed outwardly by the top of the neck of the container to which the closure is to be applied, characterised by a continuous or discontinuous locator annulus (30) depending downwardly from the undersurface of the crown (11) and disposed radially inwardly of the fin (18), the locator annulus extending downwardly by a distance greater than the fin (18) and having an outer diameter just smaller than that of the inner diameter of the container neck (20) with which it is to be used. Closures of this type allow effective reliable capping.
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