Pleated-side bag or sack made of flexible, weldable material

Abstract

A pleated-side bag or sack of flexible weldable material with a closed bottom end and a top end provided with an internal reclosing device has side pleats inserted V-wise between two bag walls forming a front wall of the bag and a back wall of the bag. The pleats extend from a bottom end to a top end. A reclosing device is formed by two pressure sealing strips below the top end. The two pressure sealing strips are formed by two hook-and-loop strips of weldable material which are fastened in parallel alignment opposite one another on the two bag walls, occupying substantially an entire interior bag width, and the side pleats project with their two V-panels between the hook-and-loop strips into the bag interior.

1 . A pleated-side bag or sack of flexible weldable material with a closed bottom end and a top end provided with an internal reclosing device, wherein side pleats inserted V-wise between the two bag walls forming the front wall of the bag and the back wall of the bag reach all the way from the bottom end to the top end and the reclosing device is formed by two pressure sealing strips, which can be brought into mutual closing engagement below the top end, wherein the two pressure sealing strips are formed by two hook-and-loop strips ( 9 ) of weldable material, which are fastened in parallel alignment opposite one another on the two bag walls ( 4 ,  5 ), occupying substantially the entire interior bag width, and the side pleats ( 7 ) project with their two V-panels ( 13 ,  14 ) between the hook-and-loop strips ( 9 ) into the bag interior.  
     
     
         2 . The pleated-side bag or sack of  claim 1 , wherein the V-panels ( 13 ,  14 ) of the side pleats are provided with punched holes ( 17 ) in a common plane containing the hook-and-loop strips ( 9 ) of the bag walls.  
     
     
         3 . The pleated-side bag or sack of  claim 1  or  2 , wherein the V-panels ( 13 ,  14 ) of the side pleats ( 7 ) are provided in turn with hook-and-loop strips ( 18 ,  19 ,  20 ) in a common plane containing the hook-and-loop strips ( 18 ,  19 ,  20 ) in a common plain containing the hook-and-loop strips ( 9 ) of the bag walls ( 4 ,  5 ).  
     
     
         4 . The pleated-side bag or sack of  claim 3 , wherein the hook-and-loop strips ( 18 ) of the V-panels ( 13 ,  14 ) extend substantially over the entire width of the side pleats ( 7 ).  
     
     
         5 . The pleated-side bag or sack of  claim 3 , wherein the hook-and-loop strips ( 19 ,  20 ) of the V-panels ( 13 ,  14 ) extend only over a part of the width of each V-panel ( 13 ,  14 ).  
     
     
         6 . The pleated-side bag or sack of  claim 5 , wherein the hook-and-loop strips ( 19 ) are disposed on the inside of the V-panels ( 13 ,  14 ) in a position opposite in each case to a hook-and-loop strip ( 9 ) in the bag walls ( 4 ,  5 ).  
     
     
         7 . The pleated-side bag or sack of  claim 5 , wherein the hook-and-loop strips ( 20 ) are disposed on the outer side of the V-panels ( 13 ,  14 ) with confronting adhesion surfaces ( 11 ).  
     
     
         8 . The pleated-side bag or sack of any one of the  claims 1  to  7 , wherein the hook-and-loop strips ( 9 ) of the bag walls ( 4 ,  5 ) are drawn in with their ends into side wall welds ( 15 ,  16 ) of the bag ( 1 ), which join the side pleats ( 7 ) to the margins of the bag walls ( 4 ,  5 ).  
     
     
         9 . The pleated-side bag or sack of any one of the  claims 1  to  8 , wherein the width of the hook-and-loop strips ( 9 ,  18 - 20 ) is approximately 10 to 20 mm.  
     
     
         10 . The pleated-side bag or sack of any one of the  claims 1  to  9 , wherein the hook-and-loop strips ( 9 ,  18 - 20 ) have similarly shapes adherence surfaces ( 11 ) with catch members, which can be brought into mutual interlocking engagement.