Sealed package for pourable food products and a basic unit of sheet packaging material for producing sealed packages for pourable food products

Abstract

There is described a sealed package for pourable food product, comprising: a first wall, which is adapted to define, in a normal use position, a bottom wall of package, and which comprises a plurality of boundary first edges defining a first plane; a second wall, which is opposite to first wall, comprises a second edge and a third edge opposite to each other, and is adapted to define, in the normal use position, a top wall of package; second edge and third edge define a second plane, which is angled with respect to first plane for a first angle smaller than 90 degrees; the first angle ranges between 1 and 7 degrees.

1 . A sealed package for pourable food product, comprising:
 a first wall, which is adapted to define, in a normal use position, a bottom wall of said package, and which comprises a plurality of boundary first edges defining a first plane; and   a second wall, which is opposite to said first wall, comprises a second edge and a third edge opposite to each other, and is adapted to define, in said normal use position, a top wall of said package;   said second edge and said third edge defining a second plane, which is angled with respect to said first plane for a first angle smaller than 90 degrees;   wherein said first angle ranges between 1 and 7 degrees.   
     
     
         2 . The sealed package of  claim 1 , wherein said angle ranges between 3 and 5 degrees. 
     
     
         3 . The sealed package of  claim 1 , comprising:
 a third wall, which extends between said first wall and said second wall, and is bounded by said second edge;   a fourth wall, which extends between said first wall and said second wall, is opposite to said third wall, and is bounded by said third edge;   said third wall having a first height measured orthogonally to said first plane;   said fourth wall having a second height measured orthogonally to said first plane;   said first height being greater than said second height.   
     
     
         4 . The sealed package of  claim 3 , wherein said second wall defines a closed hole;
 said hole being closer to said second edge than to said third edge.   
     
     
         5 . The sealed package of  claim 3 , comprising a first sealing band, which is folded, at least partially, on said second wall, and forms a tab bounded by a fourth free edge and by a bend line formed at the base of said first sealing band;
 said bend line and said fourth free edge being opposite to one another;   said first sealing band being folded on the side of said third edge, so that said fourth free edge is interposed between said bend line ( 40 ) and said third edge.   
     
     
         6 . The sealed package of  claim 5 , wherein said fourth free edge and said second edge define a third plane which is angled with respect to said first plane for a second angle smaller than said first angle. 
     
     
         7 . The sealed package of  claim 6 , wherein said third plane is parallel to said first plane. 
     
     
         8 . The sealed package of  claim 3 , comprising a second sealing band, which extends transversally to said first sealing band along said fourth wall, so as to leave free said third wall from any sealing band. 
     
     
         9 . A sealed package for pourable food product, comprising:
 a first wall, which is adapted to define, in a normal use position, a bottom wall of said package, and which comprises a plurality of boundary first edges defining a first plane; and   a second wall, which is opposite to said first wall, comprises a second edge and a third edge opposite to each other, and is adapted to define, in said normal use position, a top wall of said package;   a first distance of said second edge from said first plane being greater than a second distance of said third edge from said first plane;   said package further comprising a sealing band, which is folded, at least partially, on said second wall, and forms a tab bounded by a fourth free edge and by a bend line formed at the base of said first sealing band;   said bend line and said fourth free edge being opposite to one another;   wherein said first sealing band is folded on the side of said third edge, so that said fourth free edge is interposed between said bend line and said third edge.   
     
     
         10 . A basic unit of a sheet packaging material for producing a sealed package of a pourable food product, comprising:
 at least one first crease line, which is adapted to define first edges of a top first wall of said finished package once said basic unit has been folded;   at least one straight second crease line, which is adapted to define second edges of a bottom second wall, opposite to said first wall, of said finished package once said basic unit has been folded;   a first panel, which is adapted to define at least a portion of said top first wall of said finished package once said basic unit has been folded; and   at least one second panel, which is arranged on the opposite side of said first panel with respect to said first crease line, and is adapted to define a lateral third wall, interposed between said top first wall and said bottom second wall of said finished package once said basic unit has been folded;   said first crease line comprising, in turn:
 a first segment, which bounds said first panel and is adapted to define one of said first edges of said finished package once said basic unit has been folded; and 
 at least one second segment, which is adjacent and consecutive to said first segment, bounds said second panel and is adapted to define another one of said first edges once said basic unit has been folded; 
   said first segment and second segment being angled at an angle smaller than 90 degrees;   wherein said angle ranges between 1 and 7 degrees.   
     
     
         11 . The basic unit of  claim 10 , wherein said angle ranges between 3 and 5 degrees. 
     
     
         12 . The basic unit of  claim 10 , wherein said second segment diverges from said second crease line, starting from said first segment and proceeding along said first crease line. 
     
     
         13 . The basic unit of  claim 12 , comprising:
 a third panel arranged on the same side of said first panel with respect to said first crease line and adapted to define an additional portion of said top first wall of said package, once said basic unit has been folded; and   a closed third crease line arranged inside said third panel and adapted to define a boundary for a hole of said package;   said first crease line comprising a third segment, which bounds said third panel and is arranged on the opposite side of said second segment relative to said first segment.   
     
     
         14 . The basic unit of  claim 10 , wherein said second segment converges towards said second crease line, starting from said first segment and proceeding along said first crease line. 
     
     
         15 . The basic unit of  claim 14 , comprising a closed third crease line, which is arranged inside said first panel and is adapted to define a boundary for a hole of said package and intended to be perforated by a straw. 
     
     
         16 . The basic unit of  claim 10 , comprising a pair of said second panels, which are arranged on respective lateral sides of said first panel and are adapted to define respective lateral second walls of said finished package, once said basic unit has been folded;
 said first crease line comprising a pair of second segments, which bound respective said second panels, extend on opposite lateral sides of said first segment and are adapted to define respective first edges, once said basic unit has been folded.