Frangible seal for packaging

Abstract

A product packaging comprising a non-rigid wrapper sheet with a top side and a bottom side and a thickness defined between the top side and the bottom side. The non-rigid wrapper sheet includes a frangible seal. The frangible seal includes a top recess located in the top side of the non-rigid wrapper sheet and a bottom recess located in the bottom side of the non-rigid wrapper sheet and being adjacent to the top recess. The top recess is at least partially offset from the bottom recess as defined by the non-intersection of two separate planes extending perpendicularly through the top side of the non-rigid wrapper sheet with one plane also passing through the lateral center of the top recess and the other plane also passing through the lateral center of the bottom recess.

1 . A product packaging comprising: 
 a non-rigid wrapper sheet with a top side and a bottom side and a thickness defined between the top side and the bottom side;    the non-rigid wrapper sheet including a frangible seal; and,    the frangible seal including a top recess located in the top side of the non-rigid wrapper sheet and a bottom recess located in the bottom side of the non-rigid wrapper sheet and being adjacent to the top recess, wherein the top recess is at least partially offset from the bottom recess as defined by the non-intersection of two separate planes extending perpendicularly through the top side of the non-rigid wrapper sheet with one plane also passing through the lateral center of the top recess and the other plane also passing through the lateral center of the bottom recess.    
   
   
       2 . The product packaging of  claim 1  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and the first distance is not equal to the second distance.  
   
   
       3 . The product packaging of  claim 1  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and the first distance is equal to the second distance.  
   
   
       4 . The product packaging of  claim 1  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and at least one of the first distance and the second distance is greater than one half the thickness of the non-rigid wrapper sheet.  
   
   
       5 . The product packaging of  claim 1  wherein at least one of the top recess and the bottom recess is linearly adjacent at least one non-recessed portion.  
   
   
       6 . The product packaging of  claim 5  comprising a plurality of top recesses and a plurality of top non-recessed portions, each top recess being adjacent a top non-recessed portion and each top recess and top non-recessed portion alternating in a line across the top side of the wrapper.  
   
   
       7 . The product packaging of  claim 5  comprising a plurality of bottom recesses and a plurality of bottom non-recessed portions, each bottom recess being adjacent a bottom non-recessed portion and each bottom recess and bottom non-recessed portion alternating in a line across the bottom side of the wrapper.  
   
   
       8 . The product packaging of  claim 1  comprising a bond located between the top recess and the bottom recess such that the non-rigid wrapper sheet forms an impermeable barrier to prevent liquid passing from at least one of the top side to the bottom side of the non-rigid wrapper sheet or the bottom side to the top side of the non-rigid wrapper sheet.  
   
   
       9 . The product packaging of  claim 1  wherein the top recess does not superpose any part of the bottom recess.  
   
   
       10 . The product packaging of  claim 1  wherein at least one of the top recess and the bottom recess forms a continuous line about the packaging.  
   
   
       11 . A product packaging comprising: 
 a non-rigid wrapper sheet with a top side and a bottom side and a thickness defined between the top side and the bottom side;    the non-rigid wrapper sheet including a frangible seal;    the frangible seal including a top recess located in the top side of the non-rigid wrapper sheet and a bottom recess located in the bottom side of the non-rigid wrapper sheet and being adjacent to the top recess; and,    a bond located between the top recess and the bottom recess such that the non-rigid wrapper sheet forms an impermeable barrier to prevent liquid passing from at least one of the top side to the bottom side of the non-rigid wrapper sheet or the bottom side to the top side of the non-rigid wrapper sheet and wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and the first distance is not equal to the second distance.    
   
   
       12 . The product packaging of  claim 11  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and at least one of the first distance and the second distance is greater than one half the thickness of the non-rigid wrapper sheet.  
   
   
       13 . The product packaging of  claim 11  wherein at least one of the top recess and the bottom recess is linearly adjacent at least one non-recessed portion.  
   
   
       14 . The product packaging of  claim 13  comprising a plurality of top recesses and a plurality of top non-recessed portions, each top recess being adjacent a top non-recessed portion and each top recess and top non-recessed portion alternating in a line across the top side of the wrapper.  
   
   
       15 . The product packaging of  claim 13  comprising a plurality of bottom recesses and a plurality of bottom non-recessed portions, each bottom recess being adjacent a bottom non-recessed portion and each bottom recess and bottom non-recessed portion alternating in a line across the bottom side of the wrapper.  
   
   
       16 . The product packaging of  claim 11  wherein at least one of the top recess and the bottom recess forms a continuous line about the packaging.  
   
   
       17 . A product packaging comprising: 
 a non-rigid wrapper sheet with a top side and a bottom side and a thickness defined between the top side and the bottom side;    the non-rigid wrapper sheet including a frangible seal;    the frangible seal including a top recess located in the top side of the non-rigid wrapper sheet and a bottom recess located in the bottom side of the non-rigid wrapper sheet and being adjacent to the top recess; and,    a bond located between the top recess and the bottom recess such that the non-rigid wrapper sheet forms an impermeable barrier to prevent liquid passing from at least one of the top side to the bottom side of the non-rigid wrapper sheet or the bottom side to the top side of the non-rigid wrapper sheet and wherein the top recess does not superpose any part of the bottom recess.    
   
   
       18 . The product packaging of  claim 17  wherein at least one of the top recess and the bottom recess forms a continuous line about the packaging.  
   
   
       19 . The product packaging of  claim 18  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and the first distance is not equal to the second distance.  
   
   
       20 . The product packaging of  claim 19  wherein the top recess extends a first distance into the thickness of the non-rigid wrapper sheet and the bottom recess extends a second distance into the thickness of the non-rigid wrapper sheet and at least one of the first distance and the second distance is greater than one half the thickness of the non-rigid wrapper sheet.