Packaging bag

Abstract

A tetrahedron-shaped packaging bag made of a flexible film material and comprising in the region of a tetrahedron corner of the bag, a pouring part which protrudes from the bag in an essentially tubular manner and which is closed on the free end thereof. The opening cross-section in the region of the transition between the bag and the pouring part is stabilized by a reinforcement in the film material of the bag, said reinforcement extending in a manner transversal to the pouring direction (y) opposite the tetrahedron corner.

1 . A tetrahedral packaging bag made of a flexible film material, which, in the region of a tetrahedron corner of the bag, forms a discharge part which projects from the bag, is substantially tubular and having a free end which is closed, wherein the opening cross section in the region of the transition from the bag into the discharge part is stabilised by a reinforcing element in the film material of the bag, which extends transverse to a discharge direction (y) pointing away from the tetrahedron corner. 
     
     
         2 . A packaging bag according to  claim 1 , wherein the reinforcing element is formed by a folded seam consisting of the film material and projecting from a tetrahedron face of the bag. 
     
     
         3 . A packaging bag according to  claim 2 , wherein the folded seam is formed by sealing the film material against itself. 
     
     
         4 . A packaging bag according to  claim 1 , wherein the reinforcing element is formed by a rib, which is applied to the film material and made of a plastics material. 
     
     
         5 . A packaging bag according to  claim 1 , wherein the reinforcing element has a substantially linear course. 
     
     
         6 . A packaging bag according to  claim 1 , wherein the reinforcing element has substantially point-shaped elements. 
     
     
         7 . A packaging bag according to  claim 1 , wherein the tubular discharge part has a partial sealing seam extending substantially parallel to the discharge direction (y) and passing, in the region of the tetrahedron corner of the bag, into a sealing seam of the bag, and the reinforcement extends in a tetrahedron face opposing the sealing seams. 
     
     
         8 . A packaging bag according to  claim 1 , wherein the discharge part has at least one tearing notch extending transverse to the discharge direction (y). 
     
     
         9 . A packaging bag according to  claim 8 , wherein the tearing notch passes into a weakening line running around the discharge part. 
     
     
         10 . A packaging bag according to  claim 1 , wherein the discharge part can be folded or tilted and preferably fixed to the bag in the folded-over or tilted position and reclosed by means of an adhesive or by means of a strip, which is glued or sealed in between the bag wall and discharge part, with an integrated permanent adhesive layer. 
     
     
         11 . A packaging bag according to  claim 1 , wherein the discharge part is narrowed by sealing regions to form a through-opening with a valve action. 
     
     
         12 . A packaging bag according to  claim 11 , wherein the through-opening is configured as a slot which widens when pressure is exerted on the bag by a filling product and automatically closes in the absence of pressure. 
     
     
         13 . A packaging bag according to  claim 1 , wherein the discharge part is folded back against a face of the packaging bag when the packaging bag is unopened. 
     
     
         14 . A packaging bag according to  claim 1 , wherein the discharge part is fixed in a folded-over position against a face of the packaging bag when the packaging bag is unopened by means of an adhesive. 
     
     
         15 . A packaging bag according to  claim 1 , in combination with a filling product. 
     
     
         16 . A packaging bag according to  claim 1 , wherein the reinforcing element is formed by embossing or by the use of a reinforcing printing dye.