Overpressure Valve for a Packaging Container

Abstract

An overpressure valve for a packaging container comprises a holder body and a diaphragm. An indentation is embodied in the holder body. The diaphragm covers the indentation and enables the escape of produced gas via through holes.

1 - 9 . (canceled)  
   
   
       10 . An overpressure valve ( 10 ;  10   a ;  40 ) for a packaging container ( 5 ), comprising 
 a cup-shaped, rigid holder body ( 11 ;  11   a ;  50 ), having a raised peripheral region ( 13 ;  13   a ) extending all the way around and the top side of which can be joined to a length ( 3 ) of packaging material that forms an inside ( 2 ) of the packaging container ( 5 ), and a middle region ( 12 ) having at least one through passage ( 19 ,  20 ;  44 ) for gas embodied therein, and    a valve diaphragm ( 22 ;  22   a ;  48 ), which closes the at least one passage ( 19 ,  20 ;  44 ) in the holder body ( 11 ;  11   a ;  50 ) up to a defined overpressure in the packaging container ( 5 ) and opening the passage ( 19 ,  20 ;  44 ) in the event of an overpressure to form a conduit for the outflow of gas which escapes from the packaging container ( 5 ) via at least one opening ( 4 ;  38 ) embodied in the length ( 3 ) of packaging material of the packaging container ( 5 ) inside the peripheral region ( 13 ;  13   a ),    the valve diaphragm ( 22 ;  22   a ;  48 ) being joined in captive fashion to the holder body ( 11 ;  11   a ;  50 ) and in the middle region ( 12 ) having at least one indentation ( 15 ;  15   a ;  42 ) embodied in the region of the at least one passage ( 19 ,  20 ;  44 ).    
   
   
       11 . The overpressure valve of  claim 10 , wherein the at least one indentation ( 15 ;  15   a ) has the form of at least two intersecting circles ( 16 ,  17 ), and wherein one passage ( 19 ,  20 ) is embodied substantially at each of the center points of the circles ( 16 ,  17 ).  
   
   
       12 . The overpressure valve of  claim 10 , wherein the indentation ( 42 ) has the form of a corporate logo or of a protected design trademark ( 43 ).  
   
   
       13 . The overpressure valve of  claim 10 , wherein the valve diaphragm ( 22 ;  22   a ;  48 ) is joined to the holder body ( 11 ;  11   a ;  50 ) on at least two opposed sides inside the peripheral region ( 13 ;  13   a ), between which sides the at least one passage ( 19 ,  20 ;  44 ) is disposed, and between the top side of the valve diaphragm ( 22 ;  22   a ;  48 ) and the top side of the peripheral region ( 13 ;  13   a ) of the holder body ( 11 ;  11   a ;  50 ), a spacing (a) is formed, in order to enable the escape of the gas to the at least one opening ( 4 ;  38 ) in the packaging container ( 5 ).  
   
   
       14 . The overpressure valve of  claim 11 , wherein the valve diaphragm ( 22 ;  22   a ;  48 ) is joined to the holder body ( 11 ;  11   a ;  50 ) on at least two opposed sides inside the peripheral region ( 13 ;  13   a ), between which sides the at least one passage ( 19 ,  20 ;  44 ) is disposed, and between the top side of the valve diaphragm ( 22 ;  22   a ;  48 ) and the top side of the peripheral region ( 13 ;  13   a ) of the holder body ( 11 ;  11   a ;  50 ), a spacing (a) is formed, in order to enable the escape of the gas to the at least one opening ( 4 ;  38 ) in the packaging container ( 5 ).  
   
   
       15 . The overpressure valve of  claim 13 , wherein the holder body ( 11 ;  11   a ;  50 ) is embodied as a rotationally symmetrical, shallow body; and wherein the valve diaphragm ( 22 ;  22   a ;  48 ) is embodied in striplike fashion, with two straight edges ( 24 ,  25 ) disposed opposite one another.  
   
   
       16 . The overpressure valve of  claim 14 , wherein the holder body ( 11 ;  11   a ;  50 ) is embodied as a rotationally symmetrical, shallow body; and wherein the valve diaphragm ( 22 ;  22   a ;  48 ) is embodied in striplike fashion, with two straight edges ( 24 ,  25 ) disposed opposite one another.  
   
   
       17 . The overpressure valve of  claim 15 , wherein the valve diaphragm ( 22 ;  22   a ;  48 ), in its regions ( 31 ,  32 ;  51 ,  52 ) joined to the holder body ( 11 ;  11   a ;  50 ), extends as far as the peripheral regions ( 13 ;  13   a ); and wherein the valve diaphragm ( 22 ;  22   a ;  48 ), in the regions not joined to the holder body ( 11 ;  11   a ;  50 ), is spaced apart from the peripheral region ( 13 ;  13   a ) of the holder body ( 11 ;  11   a ;  50 ), so that at least one passage for the gas is formed.  
   
   
       18 . The overpressure valve of  claim 16 , wherein the valve diaphragm ( 22 ;  22   a ;  48 ), in its regions ( 31 ,  32 ;  51 ,  52 ) joined to the holder body ( 11 ;  11   a ;  50 ), extends as far as the peripheral regions ( 13 ;  13   a ); and wherein the valve diaphragm ( 22 ;  22   a ;  48 ), in the regions not joined to the holder body ( 11 ;  11   a ;  50 ), is spaced apart from the peripheral region ( 13 ;  13   a ) of the holder body ( 11 ;  11   a ;  50 ), so that at least one passage for the gas is formed.  
   
   
       19 . The overpressure valve of  claim 10 , further comprising at least one raised area ( 14 ) extending all the way around embodied on the top side of the holder body ( 11 ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material for joining the holder body ( 11 ) to the length ( 3 ) of material by ultrasonic welding.  
   
   
       20 . The overpressure valve of  claim 11 , further comprising at least one raised area ( 14 ) extending all the way around embodied on the top side of the holder body ( 11 ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material for joining the holder body ( 11 ) to the length ( 3 ) of material by ultrasonic welding.  
   
   
       21 . The overpressure valve of  claim 13 , further comprising at least one raised area ( 14 ) extending all the way around embodied on the top side of the holder body ( 11 ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material for joining the holder body ( 11 ) to the length ( 3 ) of material by ultrasonic welding.  
   
   
       22 . The overpressure valve of  claim 15 , further comprising at least one raised area ( 14 ) extending all the way around embodied on the top side of the holder body ( 11 ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material for joining the holder body ( 11 ) to the length ( 3 ) of material by ultrasonic welding.  
   
   
       23 . The overpressure valve of  claim 10 , further comprising an adhesive layer ( 37 ) is applied to the top side of the holder body ( 11   a ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material.  
   
   
       24 . The overpressure valve of  claim 11 , further comprising an adhesive layer ( 37 ) is applied to the top side of the holder body ( 11   a ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material.  
   
   
       25 . The overpressure valve of  claim 13 , further comprising an adhesive layer ( 37 ) is applied to the top side of the holder body ( 11   a ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material.  
   
   
       26 . The overpressure valve of  claim 15 , further comprising an adhesive layer ( 37 ) is applied to the top side of the holder body ( 11   a ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material.  
   
   
       27 . The overpressure valve of  claim 17 , further comprising an adhesive layer ( 37 ) is applied to the top side of the holder body ( 11   a ), in the region where it is joined to the packaging container ( 5 ) or the length ( 3 ) of material.  
   
   
       28 . The overpressure valve of  claim 10 , wherein the indentation ( 15 ;  15   a ;  42 ) has a depth of approximately 0.2 mm relative to the surface of middle region ( 12 ).  
   
   
       29 . The overpressure valve of  claim 11 , wherein the indentation ( 15 ;  15   a ;  42 ) has a depth of approximately 0.2 mm relative to the surface of middle region ( 12 ).