Patent ID: 7243683
Filing Date: 2007-07-17
Classification: B65D,F16K,Y10T

Abstract:
1. In an overpressure valve ( 10 ) for a packaging container, having a base plate ( 12 ), which is connectable to one wall ( 1 ) of the packaging container and has at least one passage opening ( 16 ) and is partially covered by a diaphragm ( 13 ) that has at least one passage ( 27 , 28 ), the diaphragm being joined in its peripheral regions ( 23 ) at least partly to the base plate ( 12 ), so that upon an overpressure in the packaging container, a conduit is created from the at least one passage opening ( 16 ) in the base plate ( 12 ) to the at least one passage ( 27 , 28 ), in order to conduct gas out of the packaging container through an opening ( 3 ) in the wall ( 1 ), the improvement wherein the overpressure valve ( 10 ) is connected to a wall ( 1 ) that forms the inside ( 2 ) of the packaging container; and wherein on the side of the base plate ( 12 ) oriented toward the inside ( 2 ), a connecting element ( 14 ) is disposed, the connecting element ( 14 ) having a closed contour, and the at least one passage ( 27 , 28 ) in the diaphragm ( 13 ) being disposed inside the contour of the connecting element ( 14 ), wherein the diaphragm ( 13 ) has two layers ( 20 , 21 ) comprising flexible plastic, the two layers being joined to one another over the full surface by means of an adhesive layer ( 25 ), and the layer ( 20 ) of the diaphragm ( 13 ) oriented toward the base plate ( 12 ) leaves an edge ( 23 ), which extends all the way around, on the other layer ( 21 ) of the diaphragm ( 13 ) free, that edge ( 23 ) being joined to the base plate ( 12 ).