Paper product and method of making

Abstract

Paper having improved curl and cockle properties for water based, ink jet printing applications and a method of producing them. The paper contains at least 50 pounds per ton of a material that is water soluble, that can be highly concentrated during application, has low viscosity and low hygroscopicity. The paper has a maximum Cockle Value of 0.25. Certain of the materials also provide water fastness.

1 . Uncoated paper having a maximum paper basis weight of 60 pounds per 3300 square feet and a maximum Cockle Value of 0.25.  
     
     
         2 . Uncoated paper comprising cellulosic fibers and at least 50 pounds per ton of said papermaking fibers of a material that is water soluble, that can be highly concentrated during application, has low viscosity and low hygroscopicity, said paper having a maximum Cockle Value of 0.25.  
     
     
         3 . The printing paper of  claim 2  in which the material is a disaccharide.  
     
     
         4 . The printing paper of  claim 3  in which the disaccharide is sucrose.  
     
     
         5 . The printing paper of  claim 3  in which the disaccharide is maltose.  
     
     
         6 . The printing paper of  claim 2  in which the material is a monosaccharide.  
     
     
         7 . The printing paper of  claim 6  in which the material is glucose.  
     
     
         8 . The printing paper of  claim 6  in which the material is mannose.  
     
     
         9 . The printing paper of  claim 2  in which the material is urea.  
     
     
         10 . The printing paper of  claim 2  in which the material is a salt of citric acid.  
     
     
         11 . The printing paper of  claim 10  in which the material is an alkaline earth salt of citric acid.  
     
     
         12 . The printing paper of  claim 10   1 n which the material is a mono salt of citric acid.  
     
     
         13 . The printing paper of  claim 10  in which the material is a di salt of citric acid.  
     
     
         14 . The printing paper of  claim 2  in which the material is corn syrup.  
     
     
         15 . The printing paper of  claim 2  in which the material is present in the range of 50 to 300 pounds per ton of paper.  
     
     
         16 . The printing paper of  claim 2  in which the material is present in the range of 75 to 250 pounds per ton of paper.  
     
     
         17 . Paper comprising cellulosic fibers and at least 50 pounds of a disaccharide per ton of said paper, said paper having a maximum Cockle Value of 0.25.  
     
     
         18 . Paper comprising cellulosic fibers and at least 50 pounds of a monosaccharide per ton of said paper, said paper having a maximum Cockle Value of 0.25.  
     
     
         19 . Paper comprising cellulosic fibers and at least 50 pounds of corn syrup per ton of said paper, said paper having a maximum Cockle Value of 0.25.  
     
     
         20 . Paper comprising cellulosic fibers and at least 50 pounds of urea per ton of said paper, said paper having a maximum Cockle Value of 0.25.  
     
     
         21 . Paper comprising cellulosic fibers and at least 50 pounds of a salt of citric acid per ton of paper, said paper having a maximum Cockle Value of 0.25.  
     
     
         22 . Paper comprising cellulosic fibers and at least 50 pounds of a salt of citric acid per ton of paper, said printing paper being water fast.