CLOSURE WITH SEAL MEMBER

摘要

A closure (10) for mounting onto a container (16), the closure (10) including a top portion (11) and a skirt portion (12) depending from the top portion (11). An annular sealing rib (20) projects downwardly from an underside of the top portion (11). The rib (20) includes a first portion (14) which is contiguous with the top portion (11) and has an inner surface (19) which lies radially inwardly of the skirt portion (12) and at least a second, frusto-conical, portion (15) contiguous with the first portion (14) and separated from the top portion (11) by the inner surface (19) of the first portion (14). The second portion (15) has an upper side and an underside and extends radially inwardly to a circular edge. The inner surface (19) of the first portion (14) has an internal diameter relative to the external diameter of the end portion (30) of the container (16) to which the closure is to be attached such that during attachment of the closure with the end portion of the container, the sealing rib (20) is engaged by the end portion of the container so folding the second portion (15) at least towards the inner surface (19) of the first portion (14) of the rib to form a seal between at least an outer surface of the end portion of the container and the closure. The closure further has an annular protrusion (22) formed on the underside of the second portion (15) which extends outwardly therefrom. The protrusion (22), on attachment of the closure with the end portion, engages the outer surface of the end portion (30) so causing the sealing rib (20) to be disposed over a greater area of the outer surface of the end portion of the container.