| 摘要 |
An imperforate crown (5) of the top-end (4) of a container (1) has at least one aperture zone (8) which is weakened in comparison to the remainder of the crown (5). A piercing member (13) for puncturing the aperture zone (8) is provided on the top-end (4) outside the aperture zone (8) and serves to reclose the hole so created. The piercing member (13) is held fast by means of a flexible strip (12) to the top-end. The fastening can be by means of a rib (6) which encircles the aperture zone (8). The piercing member can be retained ready for use on a projecting stud (48, see Fig. 12) or in a lipped recess (15, see Fig. 1) in the crown. Alternatively, the piercing member (13) can be held within an intermediate ring (53) which is snapped on to the rib (6). Between the intermediate ring (53) and the piercing member (13) one can provide at least one fracturable element (55) which is preferably gas-tight. The opening up of the aperture zone (8) is made easier by providing various lines e.g. see Fig. 4, or areas of weakness in the aperture zone (8). A tapering portion of the base (18) of a further container (19) is arranged to stack within the double seam (3) of the first container (1). <IMAGE> |
