Bag for bulk material

Abstract

A bag ( 1 ) for bulk material, in particular animal feed and/or foodstuffs, with a flexible bag wall ( 2 ) and a re-closable removal opening for removing the bulk material from the bag ( 1 ), wherein the removal opening is designed as a flap ( 3 ). The flap can be folded together about a fold axis ( 8 ) and can have a valve ( 12 ).

1 . Bag for bulk material, comprising a flexible bag wall and a reclosable removal opening for removing bulk material from the bag, and the removal opening is constructed as a flap, wherein the flap has a flap frame and a flap door that is attached to the frame and that can pivot about a flap axis relative to the flap frame, wherein at least one of the flap frame or the flap door can be folded together about at least one folding axis, wherein the bag has a fold and the flap is arranged in a region of the fold, and wherein the flap is an injection-molded part made from plastic. 
   
   
       2 . Bag according to  claim 1 , wherein the bag is completely closed, apart from the flap. 
   
   
       3 . Bag according to  claim 1 , wherein the fold runs in a longitudinal direction of the bag. 
   
   
       4 . Bag according to  claim 1 , wherein the flap frame of the flap is welded into the bag. 
   
   
       5 . Bag according to  claim 1 , wherein the flap frame of the flap is glued onto the bag. 
   
   
       6 . Bag according to  claim 1 , wherein the flap is welded onto the bag wall from inside in an interior of the bag or is connected to the bag wall from the inside by another connection. 
   
   
       7 . Bag according to  claim 6 , wherein the flap is hidden behind a region of the bag wall encompassed by perforations. 
   
   
       8 . Bag according to  claim 1 , wherein the flap frame is located around the flap door. 
   
   
       9 . Bag according to  claim 1 , wherein at least one of the flap frame or the flap door can be folded together about at least one folding axis in a closed position of the flap door. 
   
   
       10 . Bag according to  claim 1 , wherein, in a closed position of the flap door, the folding axis is arranged at an angle that is different from 0° and 180° relative to the flap axis. 
   
   
       11 . Bag according to  claim 1 , wherein, in a closed position of the flap door, the folding axis is arranged orthogonal to the flap axis. 
   
   
       12 . Bag according to  claim 1 , wherein a wall thickness of at least one of the flap frame or the flap door in a region of the folding axis is less than in a region of at least one of the flap frame or the flap door surrounding the folding axis. 
   
   
       13 . Bag according to  claim 1 , wherein the flap door is attached in a region of the flap axis by a hinge. 
   
   
       14 . Bag according to  claim 1 , wherein the flap door is attached in a region of the flap axis by a hinge film. 
   
   
       15 . Bag according to  claim 1 , wherein at least one of the flap frame or the flap door comprises polyethylene or polypropylene or consist thereof. 
   
   
       16 . Bag according to  claim 1 , wherein, for reclosing the flap, the flap door has a flexible lip on an edge thereof facing toward the flap frame in a closed position, and the lip keeps the flap door in the closed position in the flap frame. 
   
   
       17 . Bag according to  claim 16 , wherein the lip is connected in one piece to the flap frame before a first opening of the flap door. 
   
   
       18 . Bag according to  claim 1 , wherein a grip region is provided on the flap door, and the grip region can be gripped from outside, also in the closed position of the flap door and simplifies at least one of opening or closing of the flap door. 
   
   
       19 . Flap for constructing a reclosable removal opening for a container for bulk material, wherein a valve is provided in the flap, and the valve allows gas throughput in one direction and blocks gas throughput in an opposite direction. 
   
   
       20 . Flap according to  claim 19 , wherein the valve is constructed as a slot in the flap door or the flap frame. 
   
   
       21 . Flap according to  claim 19 , wherein the valve is constructed as a slot in the flap.