Bag for bulk material

Abstract

A bag for bulk material made of paper and/or other sheet material, having at least one bottom formed in a cross bottom or block bottom folding manner, the bottom fold having two side flaps which are folded about side fold lines extending in the longitudinal direction of the bottom to form the bottom, the side flaps forming an overlap in the closed state, the width of the overlap being a maximum of 10 millimeters, preferably a maximum of 6 millimeters and further preferably a maximum of 4 millimeters.

1 . Bag ( 10 ) for bulk material of paper and/or other sheet material, with at least one bottom formed in a cross or block bottom folding manner, wherein the bottom folding comprises two side flaps ( 25 ,  26 ) which are folded about side fold lines ( 28 ,  29 ) extending in the longitudinal direction of the bottom for bottom formation, wherein the side flaps form an overlap in the closed state, and the width of the overlap is at most 10 millimeters, preferably at most 6 millimeters and further preferably at most 4 millimeters. 
     
     
         2 . Bag according to  claim 1 , wherein the width of the overlap is at least 1 millimeter, preferably at least 2 millimeters and further preferably at least 4 millimeters. 
     
     
         3 . Bag according to  claim 1  ,wherein the bottom is formed as a valve bottom in which a valve ( 50 ) for filling the bag is incorporated. 
     
     
         4 . Bag according to  claim 1 , wherein the valve ( 50 ,  52 ) is inserted in the region of a corner turn-in ( 22 ,  23 ) of the bottom fold, the inner end of the valve ( 54 ,  56 ) extending substantially to the inner edge ( 24 ) of the corner turn-in. 
     
     
         5 . Bag according to  claim 3 , wherein the valve ( 50 ,  52 ) is inserted in the region of a corner turn-in ( 22 ,  23 ) of the bottom fold, the inner end ( 54 ,  56 ) of the valve ( 50 ,  52 ) being shortened relative to the inner edge ( 24 ) of the corner turn-in ( 22 ), the shortening being preferably 3 mm, further preferably 6 mm and still further preferably 1 cm. 
     
     
         6 . Bag according to  claim 1  wherein the valve ( 50 ) is formed as a valve tube ( 50 ) and/or as a valve patch ( 52 ). 
     
     
         7 . Bag according to  claim 1 , comprising two opposite bottoms between which a side wall ( 16 ) of the bag extends. 
     
     
         8 . Bag according to  claim 1 , wherein the bag is designed as an open cross-bottom or block-bottom bag. 
     
     
         9 . Bag according to  claim 1  ,wherein the bag is designed as a multilayer bag, the material layers preferably selected from the group consisting of paper, coated paper, plastic, and mixtures thereof. 
     
     
         10 . Bag according to  claim 9 , wherein the bag is formed of three layers, the innermost and the outermost material layer being formed of paper and intermediate material layer being formed of plastic film. 
     
     
         11 . Bag according to  claim 1 , wherein the bag is formed of compostable and/or recyclable materials, in particular paper and/or coated paper. 
     
     
         12 . Bag according to  claim 1 , wherein at least one of the bottoms is provided with an inner latch ( 40 ) and/or a cover sheet ( 45 ). 
     
     
         13 . Bag according to  claim 1 , wherein the inner latch comprises uncoated paper, PE-coated paper and/or film. 
     
     
         14 . Bag according to  claim 1 , wherein wherein the bag is formed from a piece of tubing which has a smooth cut at least one, preferably both ends ( 13 ,  14 ). 
     
     
         15 . Bag according to  claim 2 , wherein the bottom is formed as a valve bottom in which a valve ( 50 ) for filling the bag is incorporated. 
     
     
         16 . Bag according to  claim 15 , wherein the valve ( 50 ,  52 ) is inserted in the region of a corner turn-in ( 22 ,  23 ) of the bottom fold, the inner end of the valve ( 54 ,  56 ) extending substantially to the inner edge ( 24 ) of the corner turn-in. 
     
     
         17 . Bag according to  claim 15 , wherein the valve ( 50 ,  52 ) is inserted in the region of a corner turn-in ( 22 ,  23 ) of the bottom fold, the inner end ( 54 ,  56 ) of the valve ( 50 ,  52 ) being shortened relative to the inner edge ( 24 ) of the corner turn-in ( 22 ), the shortening being preferably 3 mm, further preferably 6 mm and still further preferably 1 cm. 
     
     
         18 . Bag according to  claim 17 , wherein the valve ( 50 ) is formed as a valve tube ( 50 ) and/or as a valve patch ( 52 ). 
     
     
         19 . Bag according to  claim 16 , wherein the valve ( 50 ) is formed as a valve tube ( 50 ) and/or as a valve patch ( 52 ). 
     
     
         20 . Bag according to  claim 15 , wherein the valve ( 50 ) is formed as a valve tube ( 50 ) and/or as a valve patch ( 52 ).