Self-closing closure and closure membrane relating to same
First Claim
Patent Images
1. A closure membrane for a packaging container comprising a closure head including:
- an internal surface facing towards an interior of the packaging container and an external surface facing outwardly therefrom, at least one slit formed in the closure head and capable of automatically and flexibly opening to dispense product in response to internal pressure in the container and capable of re-closing against escape of product when the internal pressure is later released and, at least one continuously projecting head plate ring integrally formed on the external surface of the closure head around the slit, the head plate ring extending generally perpendicularly to the plane of the closure head, whereby the head plate ring stiffens the closure head to promote termination of product flow when the slit recloses.
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Abstract
Closure membrane for a packaging container which comprises a closure head (5) wherein at least one head plate ring (61) is formed on the closure head, preferably around its border, which extends essentially perpendicular with respect to the plane of the closure head (5).
65 Citations
47 Claims
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1. A closure membrane for a packaging container comprising a closure head including:
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an internal surface facing towards an interior of the packaging container and an external surface facing outwardly therefrom, at least one slit formed in the closure head and capable of automatically and flexibly opening to dispense product in response to internal pressure in the container and capable of re-closing against escape of product when the internal pressure is later released and, at least one continuously projecting head plate ring integrally formed on the external surface of the closure head around the slit, the head plate ring extending generally perpendicularly to the plane of the closure head, whereby the head plate ring stiffens the closure head to promote termination of product flow when the slit recloses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A self-closing closure comprising:
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a closure cap with a closure opening, an internal surface facing towards an interior of the packaging container and an external surface facing outwardly therefrom, at least one slit formed in the closure head and capable of automatically and flexibly opening to dispense product in response to internal pressure in the container and capable of re-closing against escape of product when the internal pressure is later released, and at least one continuously projecting head plate ring integrally formed on the external surface of the closure head around the slit, the head plate ring extending generally perpendicularly to the plane of the closure head, the head plate ring stiffening the closure head to promote termination of the product flow when the slit recloses, wherein the closure membrane is arranged relatively to the closure opening such that the closure head is located within the closure opening and the closure head projects beyond the closure cap. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
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47. The self-closing closure according to 39 further comprising a through-passage opening formed in the closure and a cylindrical wall adjoining the through-passage opening towards an outside portion thereof, an internal diameter of the cylindrical wall corresponding approximately to an external diameter of the closure head, and the closure head, during a dispensing operation, being displaced vertically into the region of the cylindrical wall.
Specification