Packaging for Bulk Goods, Particularly Bag Made of Plastic Film

Abstract

Disclosed is a packaging ( 1 ) for bulk material, especially a bag made of plastic film, comprising a packaging wall ( 2 ) which envelops the bulk material and is provided with at least one multilayered wall area ( 6 ) that is composed of at least one inner layer ( 7 ) and at least one outer layer ( 8 ). Each layer has at least one air-permeable planar piece ( 9 ). At least one conducting element ( 12 ) for the air flow that penetrates the air-permeable planar pieces is disposed between the inner layer ( 7 ) and the outer layer ( 8 ). The conducting element ( 12 ) is embodied as at least one section of an airtight intermediate layer which is arranged such that at least the air-permeable planar pieces ( 9 ) of the inner layer ( 7 ) and/or the outer layer ( 8 ) are covered.

1 : Packaging for bulk goods, particularly bag made of plastic film, having a packaging wall that sheathes the bulk goods, which wall has at least one wall region configured in multiple layers, made of at least one inner layer and at least one outer layer, whereby each layer has at least one air-permeable planar piece,
 wherein   at least one guide organ for the air stream that passes through the air-permeable planar pieces ( 9 ) is disposed between the inner layer ( 7 ,  19 ,  27 ) and the outer layer ( 8 ,  21 ,  29 ).   
   
   
       2 : Packaging according to  claim 1 , wherein the guide organ is at least one section of an air-impermeable intermediate layer ( 12 ,  20 ,  30 ), which is disposed in such a manner that at least the air-permeable planar pieces ( 9 ) of the inner layer ( 7 ,  19 ,  27 ) and/or of the outer layer ( 8 ,  21 ,  29 ) are covered. 
   
   
       3 : Packaging according to  claim 1 , wherein the guide organ is formed by a folded-down edge of a flat web that forms the packaging wall ( 2 ), folded in the longitudinal direction. 
   
   
       4 : Packaging according to  claim 1 , wherein the guide organ is a separate film strip that runs between the layers ( 27 ,  29 ) of the multi-layer wall region ( 26 ), in the longitudinal direction of the packaging. 
   
   
       5 : Packaging according to  claim 4 , wherein pre-determined partial surfaces of the guide organ are connected, at least in sections, with at least one of the layers ( 27 ,  29 ) of the multi-layer wall region ( 26 ). 
   
   
       6 : Packaging according to  claim 3 , wherein the packaging wall ( 2 ) is a folded flat web, whose edge regions, which overlap one another, form the multi-layer wall region ( 6 ). 
   
   
       7 : Packaging according to  claim 4 , wherein the inner layer ( 27 ) of the multi-layer wall region ( 26 ) is formed by means of a material strip that is disposed in the interior region of the packaging. 
   
   
       8 : Packaging according to  claim 1 , wherein the guide organ is formed from a part of a folded film strip ( 18 ) that is disposed on the outside or inside of a film tube that forms the packaging wall ( 16 ), running in the longitudinal direction of the packaging, in order to form the multi-layer wall region ( 17 ). 
   
   
       9 : Packaging according to  claim 1 , wherein the packaging wall has perforations ( 10 ) in the air-permeable planar pieces ( 9 ). 
   
   
       10 : Packaging according to  claim 1 , wherein at least one spacer is disposed at least in partial regions of the air-permeable planar pieces ( 9 ) of each layer ( 7 ,  8 ,  19 ,  21 ,  27 ,  29 ) and/or of the guide organ. 
   
   
       11 : Packaging according to  claim 1 , wherein each spacer is configured as an embossing ( 13 ) made in the layers ( 7 ,  8 ,  19 ,  21 ,  27 ,  29 ) and/or the guide organ.