Pouch with spout

Abstract

A pouch with a spout includes a pouch body 1 formed by overlapping and thermally fusing both end portions, forming a seam, of a flexible film material and a spout 3 to be inserted between the film end portions of the pouch body 1 and then thermally fused together with the film end portions to the pouch body, wherein a stress dispersion patch 4 is bonded so as to cover partially both a spout seal portion 2 and a deformable film portion 5 so as to straddle a boundary portion between the spout seal portion 2 and the deformable film portion 5 facing an inner space of the pouch body 1.

1 . A pouch with a spout including a pouch body formed by overlapping and thermally fusing both end portions, forming a seam, of a flexible film material and a spout to be inserted between the film end portions and then thermally fused together with the film end portions to the pouch body,
 wherein a stress dispersion patch is bonded so as to cover partially both the thermally fused portion of the spout and a deformable film portion in a manner of straddling a boundary portion between the thermally fused portion of the spout and the deformable film portion facing an accommodation space of the pouch body.   
   
   
       2 . The pouch with a spout according to  claim 1 , wherein the stress dispersion patch is provided so as to cover an intersection of lateral edge portions of the spout and the boundary portion between the thermally fused portion of the spout and the film portion. 
   
   
       3 . The pouch with a spout according to  claim 1 , wherein the stress dispersion patch has a three-dimensional structure following a shape of the spout. 
   
   
       4 . The pouch with a spout according to  claim 1 , wherein an outer peripheral shape of a portion bonded to the deformable film portion side of the stress dispersion patch has a smooth curved shape. 
   
   
       5 . The pouch with a spout according to  claim 1 , wherein slip prevention means is provided on a surface of the stress dispersion patch. 
   
   
       6 . The pouch with a spout according to  claim 1 , wherein rigidity adjusting means is provided on the stress dispersion patch. 
   
   
       7 . The pouch with a spout according to  claim 6 , wherein rigidity of the portion to be bonded to the deformable film portion side of the stress dispersion patch is made to be gradually smaller toward the outer peripheral edge thereof. 
   
   
       8 . The pouch with a spout according to  claim 7 , wherein a plurality of slits are formed to an outer peripheral edge portion of a portion to be bonded to the film portion side of the stress dispersion patch. 
   
   
       9 . The pouch with a spout according to  claim 7 , wherein a portion to be bonded to the film portion side of the stress dispersion patch has a thickness gradually reducing toward an outer peripheral edge portion thereof. 
   
   
       10 . The pouch with a spout according to  claim 2 , wherein the stress dispersion patch has a three-dimensional structure following a shape of the spout. 
   
   
       11 . The pouch with a spout according to  claim 2 , wherein an outer peripheral shape of a portion bonded to the deformable film portion side of the stress dispersion patch has a smooth curved shape. 
   
   
       12 . The pouch with a spout according to  claim 3 , wherein an outer peripheral shape of a portion bonded to the deformable film portion side of the stress dispersion patch has a smooth curved shape. 
   
   
       13 . The pouch with a spout according to  claim 2 , wherein slip prevention means is provided on a surface of the stress dispersion patch. 
   
   
       14 . The pouch with a spout according to  claim 3 , wherein slip prevention means is provided on a surface of the stress dispersion patch. 
   
   
       15 . The pouch with a spout according to  claim 4 , wherein slip prevention means is provided on a surface of the stress dispersion patch. 
   
   
       16 . The pouch with a spout according to  claim 2 , wherein rigidity adjusting means is provided on the stress dispersion patch. 
   
   
       17 . The pouch with a spout according to  claim 3 , wherein rigidity adjusting means is provided on the stress dispersion patch. 
   
   
       18 . The pouch with a spout according to  claim 4 , wherein rigidity adjusting means is provided on the stress dispersion patch. 
   
   
       19 . The pouch with a spout according to  claim 5 , wherein rigidity adjusting means is provided on the stress dispersion patch.