Powder-Tight Packaging

Abstract

The invention relates to a powder-tight packaging for a good, particularly a powdery good, which has an inner frame and is formed from at least one folding blank that comprises at least one rear side ( 2 ), one front side ( 1 ) and two lateral sides ( 3, 4 ) of the packaging, these sides being attached to one another while being delimited by fold lines. In order to construct the packaging, the folding blank is closed to form tubular shape. The folding blank also has at least one top tab ( 8 ) and at least one bottom tab ( 9 ). The inventive packaging is characterized in that the bottom surface and the top surface of the packaging are each provided with a quadrilateral, particularly rectangular shape, and the folding blank has additional lateral areas ( 6 ) that are arranged in such a manner that, in the closed tubular shape, one of the additional lateral areas extends between the rear side and each lateral side and between the front side and each lateral side so that the closed tubular shape has, in its middle area, a cross-section with more than four sides, preferably with eight sides.

1 . A powder-tight packaging for a pulverulent product such as a washing or cleaning powder, comprising: at least one folding blank which comprises at least one rear face ( 2 ), one front face ( 1 ) and two end faces ( 3 ) ( 4 ) of the packaging that are attached to one another and delimited by folding lines, which folding blank, in order to construct the packaging, is closed to form a tubular shape, and wherein said folding blank further comprises at least one lid flap ( 8 ) and at least one base flap ( 9 ) for closing the base and the lid and for forming the base surface and the lid surface of the packaging, which surfaces respectively adjoin lower and upper edges of the front face ( 1 ), the rear face ( 2 ) and/or the end faces ( 3 ) ( 4 ) via folding lines, wherein the base surface and the lid surface of the packaging each have a quadrilateral shape, and wherein the folding blank comprises additional side regions ( 6 ) that extend between the rear face ( 2 ) and each end face and between the front face ( 1 ) and each end face, so that the closed tubular shape has a cross section with more than four comers in its middle region, and wherein each of the additional regions ( 6 ) tapers to form points ( 7 ) at its lower and upper ends, with the lower point being involved in the formation of one of the corners of the base surface and the upper point being involved in the formation of one of the corners of the lid surface,
 and wherein the packaging has an inner frame.   
   
   
       2 . The packaging as claimed in  claim 1 , wherein the closed tubular shape has an octagonal cross section in its middle region. 
   
   
       3 . The packaging as claimed in  claim 1 , wherein the additional side regions ( 6 ) are narrowed in relation to the width of the end faces so as to form beveled surfaces. 
   
   
       4 . The packaging as claimed in  claim 1 , wherein the additional side regions ( 6 ) in the closed tubular shape are situated approximately at angles of about 135° in relation to their adjacent end faces and the rear face ( 2 ) or the front face ( 1 ). 
   
   
       5 . The packaging as claimed in  claim 1 , wherein the folding blank is adhesively bonded in a joint region in order to form the tubular shape. 
   
   
       6 . The packaging as claimed in  claim 5 , wherein an adhesive flap ( 5 ) is provided for the purpose of adhesive bonding and forming the joint region. 
   
   
       7 . The packaging as claimed in  claim 6 , wherein the adhesive flap ( 5 ) is arranged at an edge of the front face ( 1 ) or rear face ( 2 ) which is free of an additional strip region by means of a folding line. 
   
   
       8 . The packaging as claimed in  claim 1 , wherein a tear-open strip is incorporated in the folding blank and runs substantially parallel to the lid. 
   
   
       9 . The packaging as claimed in  claim 8 , wherein the tear-open strip is delimited by material-weakening lines. 
   
   
       10 . The packaging as claimed in  claim 8 , wherein a grip tab is arranged at one end of the tear-open strip. 
   
   
       11 . The packaging as claimed in  claim 10 , wherein the grip tab is designed to be approximately the size of a thumbnail. 
   
   
       12 . The packaging as claimed in  claim 8 , wherein a swing-action hinge region, in which the lid remains connected to the rear face ( 2 ), is left by the tear-open strip. 
   
   
       13 . The packaging as claimed in  claim 1 , wherein the inner frame is substantially matched to the tubular shape. 
   
   
       14 . The packaging as claimed in  claim 8 , wherein the inner frame protrudes beyond the extent of the tear-open strip in the direction of the lid and remains undamaged by the tear-open strip. 
   
   
       15 . The packaging as claimed in  claim 1 , wherein the inner frame is a constituent part of the folding blank. 
   
   
       16 . The packaging as claimed in  claim 1 , wherein the inner frame is formed from a separate folding blank. 
   
   
       17 . The packaging as claimed in  claim 1 , wherein the inner frame is adhesively bonded to the tubular shape. 
   
   
       18 . The packaging as claimed in  claim 1 , wherein a snap-action latching connection is provided in order to reclose the lid. 
   
   
       19 . The packaging as claimed in  claim 18 , wherein the snap-action latching connection is arranged in the region of the side of the lid which is remote from the swing-action hinge. 
   
   
       20 . The packaging as claimed in  claim 1 , wherein a carrying handle is preferably arranged on the lid. 
   
   
       21 . The packaging as claimed in  claim 1 , wherein it is produced substantially from paperboard and/or cardboard. 
   
   
       22 . The packaging as claimed in  claim 1 , wherein at least part of the packaging is produced from corrugated board. 
   
   
       23 . The packaging as claimed in  claim 22 , wherein the inner frame is produced from corrugated board. 
   
   
       24 . The packaging as claimed in  claim 1 , wherein the additional side regions ( 6 ) are deformed in the closed tubular shape. 
   
   
       25 . The packaging as claimed in  claim 24 , wherein each deformed additional side region ( 6 ) has a rolling shape. 
   
   
       26 . The packaging as claimed in  claim 24 , wherein the deformed additional side region ( 6 ) has a curved shape. 
   
   
       27 . The packaging as claimed in  claim 24 , wherein each deformed additional side region ( 6 ) of the folding box has an elliptical or pick-like surface. 
   
   
       28 . The packaging as claimed in  claim 1 , wherein auxiliary folding lines ( 10 ) are provided on the folding box and on the inner frame. 
   
   
       29 . The packaging as claimed in  claim 28 , wherein the auxiliary folding lines ( 10 ) are provided on the side walls ( 3 ,  4 ). 
   
   
       30 . The packaging as claimed in  claim 29 , wherein the auxiliary folding lines ( 10 ) are provided centrally on the side walls. 
   
   
       31 . The packaging as claimed in  claim 28 , wherein, when the folding box is folded together, the auxiliary folding lines ( 10 ) are arranged such that they take over the original function of the edges of an imaginary cuboidal shape which are broken by the additional side regions ( 6 ) in the changeover from a square cross section to an octagonal cross section. 
   
   
       32 . The packaging as claimed in  claim 18 , wherein the snap-action latching connection comprises a latching element and a snap-in lug. 
   
   
       33 . The packaging as claimed in  claim 32 , wherein the latching element is provided on an inner face of the lid and the snap-in lug is provided on the associated upper edge of the inner frame. 
   
   
       34 . The packaging as claimed in  claim 1 , wherein the upper edges of the inner frame are adapted to improved closing of the lid. 
   
   
       35 . The packaging as claimed in  claim 34 , wherein the upper edges of the inner frame have a quarter-circle-like termination and a recess is thus produced at the upper end of the edges of the inner frame. 
   
   
       36 . The packaging as claimed in  claim 1 , wherein closed packaging has a vertical box compression strength of at least 500 N to 2500 N. 
   
   
       37 . The packaging as claimed in  claim 1 , wherein at least regions of the inner frame are adhesively bonded to the folding box. 
   
   
       38 . A folding blank for forming a powder-tight packaging for a pulverulent product, comprising: at least one rear face ( 2 ), one front face ( 1 ) and two end faces of the packaging that are attached to one another and delimited by folding lines, which folding blank, in order to construct the packaging, is closed to form a tubular shape, and wherein said folding blank further comprises at least one lid flap ( 8 ) and at least one base flap ( 9 ) for closing the base and the lid and for forming the base surface and the lid surface of the packaging, which surfaces respectively adjoin lower and upper edges of the front face ( 1 ), the rear face ( 2 ) and/or the end faces via folding lines, wherein the base surface and the lid surface of the packaging each have a quadrilateral shape, and wherein the folding blank comprises additional side regions ( 6 ) that extend-between the rear face ( 2 ) and each end face and between the front face ( 1 ) and each end face, so that the closed tubular shape has a cross section with more than four comers in its middle region, and wherein each of the additional regions ( 6 ) tapers to form points ( 7 ) at its lower and upper ends, with the lower point being involved in the formation of one of the comers of the base surface and the upper point being involved in the formation of one of the corners of the lid surface.