Abstract: A closure cap comprises in a transition range (7) between the cap base (2) and the cap skirt (3) a bulge (6) for pressing a sealing disk (5) against a container opening. The bulge (6) comprises an undercut (8) and in sections (9) is provided with weakenings (10) which give the bulge (6) a radial flexibility.

Abstract: A closure cap (1) with a cap base (2) and with a cap skirt (3) comprises an inner seal (4). The inner seal is provided with bleeding reliefs (11) which lift the sealing effect as soon as the cap base (2) is displaced axially upwards. The closure cap (1) comprises a first abutment and a second abutment (8). On screwing-on firstly the second abutment (8) comes into engagement with the container opening. By way of this a weakening zone (9) in the region of the cap base (3) is pretensioned to a predeterminable value. On account of the predeterminable pretensioning of the weakening zone (9) a bleeding at an exactly defined excess pressure is possible.

Abstract: A closure cap (1) for a container consists essentially of a cap base (2), of a cap skirt (3) and of a sealing disk (5) which bears at least partly on the cap base (2). A circumferential bulge (6) is arranged in the transition region (7) between the cap base (2) and the cap skirt (3). The bulge (6) serves for pressing the sealing disk (5) onto the container opening. The bulge (6) is divided by interruptions (8) into several blocks (9). On the inner side (10) of the cap base (2) there is arranged at least one rib (11) running radially outwards. The, rib seen in the circumferential direction, is located neighboring one of the interruptions.

Abstract: In the case of over-tightening of the closure-cap on a beverage bottle (through turning in the wrong direction) there is the risk that, due to the high internal pressure, not only will the thread jump, but also that the cap will be ejected directly from the container. In order to avoid this risk, the invention proposes a screwable closure-cap with security against over-tightening. This cap possesses a ramp element (3) on the end of the thread oriented towards the cap-base, said ramp element being able to engage with the thread-start of the container mouth in the case of over-tightening of the closure-cap. As a result, the cap-wall in the area of the ramp element will be forced outwards in the case of over-tightening so that jumping of the thread in this region will be facilitated. In this way, jumping of the thread on one side only--on the ramp element side--will be achieved when over-tightening is continued, so that ejection of the closure-cap will not be possible.

Abstract: Closure caps with anti-tamper strips (3) are used to visually display initial opening of a container to the public. The possibility of opening such a container without evidence should be prevented as far as possible. The possibility of stretching the anti-tamper strip (3), in order to then manipulate it past the bead on the container mouth, is here countered by an additional security ring (7). This security ring (7) is arranged coaxially to the actual anti-tamper ring (3). It is connected to the anti-tamper ring and mainly surrounds the lower area (5) of said anti-tamper ring. Access to the actual anti-tamper ring is considerably hindered as a result. In a preferred embodiment, the security ring possesses weakened zones (10) that break during manipulation, so that the interference will be visibly displayed to the outside.