Paper products and method of making

Abstract

Coated or uncoated paper that has small sized calcium carbonate on its surface. The calcium carbonate is placed on the paper web at the size press, by a spray or at a coating operation. The calcium carbonate can have a maximum mean average size of 200 nm. Another embodiment has a maximum mean average size of 100 nm. Another embodiment has a maximum mean average size of 50 nm. Different weight levels may be placed on the paper.

1 . A paper sheet having on the surface thereof calcium carbonate, 
 said calcium carbonate having a maximum mean average size of 200 nm,    said calcium carbonate being present in the amount of from 0.1 to 300 pounds per ton of base paper.    
     
     
         2 . The paper sheet of  claim 1  in which said calcium carbonate is present in the amount of 5 to 150 pounds per ton of base paper.  
     
     
         3 . The paper sheet of  claim 1  in which said calcium carbonate is present in the amount of 5 to 80 pounds per ton of base paper.  
     
     
         4 . The paper sheet of  claim 1  in which said calcium carbonate has a maximum mean average size of 100 nm.  
     
     
         5 . The paper sheet of  claim 4  in which said calcium carbonate is present in the amount of 5 to 150 pounds per ton of base paper.  
     
     
         6 . The paper sheet of  claim 4  in which said calcium carbonate is present in the amount of 5 to 80 pounds per ton of base paper.  
     
     
         7 . The paper sheet of  claim 1  in which said calcium carbonate has a mean average size of from 15 to 50 nm.  
     
     
         8 . The paper sheet of  claim 7  in which said calcium carbonate is present in the amount of 5 to 150 pounds per ton of base paper.  
     
     
         9 . The paper sheet of  claim 7  in which said calcium carbonate is present in the amount of 5 to 80 pounds per ton of base paper.