Carton blank and method of forming a carton blank

Abstract

A carton blank may be formed from a first sheet of relatively rigid material and a second sheet of relatively flexible fluid impervious material. The second sheet of relatively flexible fluid impervious material may cover some but not other portions of the first sheet of relatively rigid material in order to facilitate gluing of the other portions of the first sheet of relatively rigid material when the carton blank is assembled into a carton.

1 - 24 . (canceled)  
     
     
         25 . A method of forming carton blanks, comprising: 
 providing a sheet of first material having a first surface and an oppositely disposed second surface thereon, said first surface comprising a first area and a second area;    providing a sheet of second material comprising a first portion and a second portion;    causing said first portion of said sheet of second material to overlie said first area of said sheet of first material and said second portion of said sheet of second material to overlie said second area of said sheet of first material;    adhering said first portion of said sheet of second material to said first area of said sheet of first material; and    exposing said second area of said sheet of first material by removing said second portion of said sheet of second material.    
     
     
         26 . The method of  claim 25 , wherein said sheet of first material is a unitary relatively rigid sheet of material.  
     
     
         27 . The method of  claim 25 , wherein said sheet of first material comprises paperboard  
     
     
         28 . The method of  claim 25 , wherein said sheet of second material is a sheet of plastic material.  
     
     
         29 . The method of  claim 28 , wherein said sheet of plastic material is non-compatible with a water based adhesive.  
     
     
         30 . The method of  claim 25 , further comprising separating said sheet of first material and said sheet of second material into individual articles.  
     
     
         31 . The method of  claim 30 , further comprising forming fold lines in the article resulting from said separating in order to form said blanks, wherein each blank comprises a plurality of side panels and a closure panel.  
     
     
         32 . The method of  claim 31 , wherein each blank comprises a plurality of end panels, each end panel being foldably connected to one of said side panels.  
     
     
         33 . The method of  claim 25 , further comprising superposing continuous strips of a third material over said sheet of first material, wherein said strips of said third material are disposed between said sheets of first and second material after said adhering step.  
     
     
         34 . The method of  claim 33 , wherein said strips of third material comprise paper.  
     
     
         35 . Carton blanks formed according to the method of  claim 25 .  
     
     
         36 . A method of forming carton blanks, comprising: 
 providing a sheet of first material having a first surface and an oppositely disposed second surface thereon, said first surface comprising a first area and a second area;    providing a sheet of second material comprising a first portion and a second portion;    adhering said first portion of said sheet of second material to said first area of said sheet of first material so that said sheet of second material overlies said first area of said sheet of first material and said second portion of said sheet of second material overlies said second area of said sheet of first material;    removing said second portion of said sheet of second material;    separating said sheet of first material and said sheet of second material into individual articles; and    forming fold lines in the articles resulting from said separating in order to form said blanks, wherein each blank comprises a plurality of side panels.    
     
     
         37 . The method of  claim 36 , wherein said sheet of first material is a unitary relatively rigid sheet of material.  
     
     
         38 . The method of  claim 36 , wherein said sheet of first material comprises paperboard.  
     
     
         39 . The method of  claim 36 , wherein said sheet of second material is a sheet of plastic material.  
     
     
         40 . The method of  claim 39 , wherein said sheet of plastic material is non-compatible with a water based adhesive.  
     
     
         41 . The method of  claim 36 , wherein each blank comprises a plurality of end panels, each end panel being foldably connected to one of said side panels.  
     
     
         42 . The method of  claim 36 , further comprising superposing continuous strips of a third material over said sheet of first material, wherein said strips of said third material are disposed between said sheets of first and second material after said adhering step.  
     
     
         43 . The method of  claim 36 , wherein said strips of third material comprise paper.  
     
     
         44 . Carton blanks formed according to the method of  claim 36.