Closure with adapter
A device ( 1 ) is proposed which consists of a pouring nozzle ( 2 ) with a cylindrical circumferential wall ( 20 ) and with an internal thread ( 21 ) and a terminal flange ( 22 ), into which an adapter ( 3 ) can be screwed. The adapter ( 3 ) has an inlet end ( 30 ) with an external thread ( 32 ) and an outlet end ( 31 ) with a conical tube attachment ( 35 ). At least one combined perforating and cutting tooth ( 34 ) is formed integrally on its lower edge in the screwing-on direction. In order to achieve as high a sealing force as possible between the tubular bag ( 4 ) and the adapter ( 3 ), a special seal is proposed. To this end, the cylindrical circumferential wall ( 20 ) above the terminal flange ( 22 ) is guided into a double-walled region. The outer region forms an obliquely outwardly directed conical supporting-wall region ( 24 ) and the inner double-walled region ( 23 ) is formed by a likewise slightly conically designed but inwardly directed sealing skirt ( 25 ). Liquid which possibly tends to penetrate into the thread region while the sealing film is cut open is thus held back.
1. A device ( 1 ) for dispensing pourable media, which are aseptically packaged in a completely closed receptacle, comprising a pouring nozzle ( 2 ) with a flange which is configured to be attached to the receptacle, the pouring nozzle ( 2 ) having an internal thread ( 21 ) in a circumferential wall ( 20 ), a tubular adapter with an external thread, which fits to the internal thread of the pouring nozzle, at an inlet end ( 30 ), a conical, tapering tube attachment at an outlet end ( 31 ) thereof and a sealing collar disposed therebetween, wherein the end of the adapter ( 3 ) which can be screwed into the pouring nozzle ( 2 ) is provided with means for opening the receptacle, characterized in that the pouring nozzle has a cylindrical circumferential wall ( 20 ) in an upper region, which wall passes into a double-walled region ( 23 ) above the flange ( 22 ), said double-walled region comprising a supporting wall ( 24 ) running conically outwards and an elastic, thin-walled, circumferential sealing skirt which is concentric to said supporting wall and is inclined conically inwards, wherein the tubular adapter rotates about an axis of rotation to couple with the pouring nozzle ( 2 ), wherein the flange ( 22 ) extends radially along a plane perpendicular to the axis of rotation, and wherein the sealing skirt extends axially to the plane.
2. The device according to claim 1 , characterized in that the adapter has a lower planar end surface ( 33 ) on the inlet end ( 30 ) thereof which is provided with the external thread ( 32 ), at least one combined perforating and cutting tooth being formed integrally on said end surface in alignment with a cylindrical tube wall of said inlet end.
3. The device according to claim 1 , characterized in that the external thread on the adapter ends above the double-walled region in a completely screwed-in state.
4. The device according to claim 1 , characterized in that the circumferential wall ( 20 ) of the pouring nozzle ( 2 ) has an extension in an uppermost region, in which extension the sealing collar of the adapter is completely accommodated in a screwed-in state.
5. The device according to claim 4 , characterized in that the extension is designed in a step-shaped manner, and the sealing collar is formed in a mirror-inverted manner.
6. The device according to claim 4 , characterized in that mirror-inverted locking means are affixed to the extension, said locking means preventing the pouring nozzle and adapter from unscrewing after the adapter has been completely screwed into the pouring nozzle.
7. The device according to claim 1 , characterized in that prior to screwing in the adapter, the pouring nozzle is sealed by means of a detachable covering film.
8. The device according to claim 1 , characterized in that a thermoplastic tube is fitted to the tube attachment on the adapter.
9. The device according to claim 1 , characterized in that the external thread on the adapter ends above the sealing skirt in a completely screwed-in state.
10. The device according to claim 4 , characterized in that the extension is conical, and the sealing collar is formed in a mirror-inverted manner.
11. The device according to claim 1 , characterized in that the pouring nozzle is sealed by means of a detachable covering film.
12. The device according to claim 1 , wherein the media are liquid or paste-like substances.
13. The device according to claim 1 , wherein the flange ( 22 ) includes a lower surface defining the plane and wherein a lower end of the sealing skirt terminates at the plane.
14. A device ( 1 ) for dispensing pourable media, which are aseptically packaged in a completely closed receptacle, comprising a pouring nozzle ( 2 ) with a flange which is configured to be attached to the receptacle, the pouring nozzle ( 2 ) having an internal thread ( 21 ) in a circumferential wall ( 20 ), a tubular adapter with an external thread, which fits to the internal thread of the pouring nozzle, at an inlet end ( 30 ), a conical, tapering tube attachment at an outlet end ( 31 ) thereof and a sealing collar disposed therebetween, wherein the end of the adapter ( 3 ) which can be screwed into the pouring nozzle ( 2 ) is provided with means for opening the receptacle, characterized in that the pouring nozzle has a cylindrical circumferential wall ( 20 ) in an upper region, which wall passes into a double-walled region ( 23 ) above the flange ( 22 ), said double-walled region comprising a supporting wall ( 24 ) running conically outwards and an elastic, thin-walled, circumferential sealing skirt which is concentric to said supporting wall and is inclined conically inwards, characterized in that the circumferential wall ( 20 ) of the pouring nozzle ( 2 ) has an extension in an uppermost region, in which extension the sealing collar of the adapter is completely accommodated in a screwed-in state, and characterized in that mirror-inverted locking means are affixed to the extension, said locking means preventing the pouring nozzle and adapter from unscrewing after the adapter has been completely screwed into the pouring nozzle.
15. The device according to claim 14 , characterized in that the adapter has a lower planar end surface ( 33 ) on the inlet end ( 30 ) thereof which is provided with the external thread ( 32 ), at least one combined perforating and cutting tooth being formed integrally on said end surface in alignment with a cylindrical tube wall of said inlet end.
16. The device according to claim 14 , characterized in that the external thread on the adapter ends above the double-walled region in a completely screwed-in state.
17. The device according to claim 14 , characterized in that the extension is designed in a step-shaped manner, and the sealing collar is formed in a mirror-inverted manner.
18. The device according to claim 1 , characterized in that prior to screwing in the adapter, the pouring nozzle is sealed by means of a detachable covering film.
19. The device according to claim 1 , characterized in that a thermoplastic tube is fitted to the tube attachment on the adapter.
20. The device according to claim 1 , characterized in that the external thread on the adapter ends above the sealing skirt in a completely screwed-in state.