Sealing cap for a container closure and container closure comprising such a sealing cap

Abstract

A sealing cap made of an elastic plastic material for a container closure includes a container socket base formed on a container for disposing a container socket having a bung plug disposed in a bung socket formed on the container socket base, the sealing cap comprising a lid disk which has a fastening means disposed on an underside of the lid disk and provided with a snap-lock means for forming a snap-lock connection with the bung plug, and an edge skirt disposed at the circumference of the lid disk and connected to the lid disk via a predetermined breaking means. The lid disk has a support means for supporting the lid disk on the container socket base, the support means being disposed radially inside adjacent to the predetermined breaking means on the underside of the lid disk.

Claims

1. A container closure comprising: a container socket base wherein the container socket base is a lid for a container opening formed in a container wall, the lid comprising a bung socket which is disposed in a lid disk of the lid and which penetrates the lid disk of the lid; a sealing cap comprising a sealing cap lid disk which has a fastening means disposed on an underside of the sealing cap lid disk, the sealing cap lid disk provided with a snap-lock means for forming a snap-lock connection with a bung plug; and an edge skirt disposed at the circumference of the sealing cap lid disk and connected to the sealing cap lid disk via a predetermined breaking means, wherein the sealing cap lid disk has a support means for supporting the sealing cap lid disk on the container socket base, the support means being disposed radially inside adjacent to the predetermined breaking means on the underside of the sealing cap lid disk, and wherein the support means rests on a top of the lid disk of the lid and the edge skirt is spaced apart from the top of the lid disk of the lid.

2. The container closure according to claim 1, wherein the bung socket has an opening edge which protrudes from a top of the lid in such a manner that the support means rests on the opening edge of the bung socket.

3. The container closure according to claim 2, wherein the support means is an edge web formed on the underside of the sealing cap lid disk and disposed concentrically with the edge skirt.

4. The container closure according to claim 3, wherein the edge web has a lower edge which is recessed relative to a lower edge of the edge skirt with respect to the underside of the sealing cap lid disk.

5. The container closure according to claim 3, wherein the snap-lock means is connected to a pull tab disposed at the circumference of the sealing cap lid disk via a connecting means, the connecting means having a lid strip which is formed in the sealing cap lid disk and which is separated from adjacent areas of the edge skirt, the edge web, and an inner part of the sealing cap lid disk by a lateral predetermined breaking means and wherein the lid strip is connected to the snap-lock means via a pull web.

Description

(1) A preferred embodiment of the disclosure will be discussed in more detail below with reference to the drawing.

(2) FIG. 1 is an isometric illustration of an IBC comprising a container closure disposed on the top of an inner container of the IBC;

(3) FIG. 2 is an individual illustration of the container closure illustrated in FIG. 1;

(4) FIG. 3 is a section view of the container closure illustrated in FIG. 2;

(5) FIG. 4 is a section view of the container closure disposed on a container opening of the IBC illustrated in FIG. 1 along line IV-IV in FIG. 1;

(6) FIG. 5 is a bottom view of the sealing cap of the container closure illustrated in FIG. 2.

(7) FIG. 1 shows a transport and storage container 10, which is also referred to as an IBC and which has an inner container 13 disposed on a transport pallet 11 and accommodated in a cage 12, inner container 13 being provided with a container fitting 14 on a front side and with a container opening 16, which can be closed with a container closure 15, at a top.

(8) As illustrated in FIGS. 2 to 4, container closure 15 has a lid 17, which is a screw top in the case at hand and screwed to an opening edge of container opening 16. A bung socket 19 is disposed in a lid disk 18 of lid 17, bung socket 19 penetrating lid disk 18 in such a manner that an opening edge 20 of bung socket 19 protrudes from a top 21 of lid disk 18.

(9) As shown in FIG. 4 in particular, a bung plug 22 is screwed into bung socket 19, bung plug 22 closing bung socket 19. A sealing cap 23 is located on top of bung plug 22, sealing cap 23 comprising a lid disk 24 and an edge skirt 25, which is sleeve-shaped in the case at hand and extends essentially perpendicular to lid disk 11, edge skirt 25 being connected to lid disk 24 via a predetermined breaking means 27, which has predetermined breaking webs 26, as is shown in FIG. 2 in particular.

(10) As shown in FIG. 3 in particular, lid disk 24 is provided with a fastening means 29 on its underside 28, fastening means 29 being a fastening ring in the case at hand and engaging a plug depression 30 of bung plug 19 in such a manner that a snap-lock means 38 formed on the lower end of fastening means 29 engages a mating snap-lock means 32 formed in plug depression 30. As further shown in FIG. 3, lid disk 24 is provided with a support means, which is an edge web 33, on its underside 28 radial inside adjacent to predetermined breaking means 27, a lower edge 34 of edge web 33 resting on opening edge 20 of bung socket 19 disposed on top 21 of lid 17.

(11) As FIG. 4 in particular clearly shows, edge skirt 25 of the configuration example illustrated is connected to edge web 33 via predetermined breaking means 27. Edge skirt 25 covers lower edge 34 of edge web 33, which rests on opening edge 20, since lower edge 34 is recessed relative to a lower edge 35 of edge skirt 25.

(12) If pressure is exerted on lid disk 24 as indicated by the force arrows in FIG. 4, a corresponding load is introduced into lid 17 through a force fit via edge web 33, which rests on top 21 of lid disk 18 of lid 17, more precisely on opening edge 20 of bung socket 19 in this case, without edge skirt 25 being loaded and reaction forces due to the loading of edge skirt 25 possibly acting on predetermined breaking means 27. So the manipulation safeguard formed in this case by edge skirt 25, which is connected to lid disk 18 via predetermined breaking means 27, is not affected by external loads acting on lid disk 24 of sealing cap 23.

(13) On the other hand, sealing cap 23 is configured in such a manner that sealing cap 23 can be removed as a continuous unit from container closure 15, in particular after predetermined breaking means 27 has been destroyed, without the support means, which is edge web 33 in this case, preventing the removal. As illustrated in FIG. 5 in particular, a pull tab 36 formed on edge skirt 25 is connected to snap-lock means 38, which is formed on fastening means 29, via a connecting means 37, which has a lid strip 39, which extends from pull tab 36 via edge skirt 25 and edge web 33 into a central inner part 40 of lid disk 24 and is separated from adjacent portions of edge skirt 25, of edge web 33 and of inner part 40 of lid disk 24 by lateral predetermined breaking means 41 and 42. Lid strip 39 is connected to snap-lock means 38 of fastening means 29 via a pull web 43 in such a manner that when pull tab 36 is moved diagonally upward to the center of the lid disk, lid strip 39 is detached along predetermined breaking means 41 and 42, and snap-lock means 38, which is formed on fastening ring 29, is deformed radially inward via pull web 43, which is connected to inner part 40 of lid disk 24, with the result that sealing cap 23 can be removed from lid 17 as a continuous unit.