Fast disintegrating paper products and methods of making

Abstract

Described are compositions for use in paper products including a modified starch, paper products including a modified starch, and methods of making paper products, and the like. The compositions can include a pulp slurry and a modified starch and can include hardwood fibers, softwood fibers, non-wood fibers, or a combination thereof. Provided for are paper products, such as tissue paper, having a basis weight below 150 gsm. Also provided for are methods for making paper products that can include mixing a pulp slurry with an enzymatically modified starch derivative.

1 . A composition comprising a pulp slurry and a modified starch, wherein the modified starch has a cyclic structure and water solubility greater than 10 mg/mL when immersed at about 25° C., and wherein the pulp slurry comprises hardwood fibers, softwood fibers, non-wood fibers, or a combination thereof. 
     
     
         2 . The composition according to  claim 1 , wherein the modified starch is β-cyclodextrin. 
     
     
         3 . The composition according to  claim 2 , wherein a ratio of β-cyclodextrin to fiber is from about 0.05% to about 5.0%. 
     
     
         4 . The composition according to  claim 3 , further comprising soy lecithin protein, wherein the soy lecithin protein to β-cyclodextrin ratio is from about 1.0% to about 200%. 
     
     
         5 . The composition according to  claim 4 , further comprising glyoxalated polyacrylamide, wherein the soy lecithin protein to β-cyclodextrin ratio is from about 1.0% to about 200%. 
     
     
         6 . The composition according to  claim 2 , wherein the pulp slurry is comprised of from about 0% to about 80% recycled fibers. 
     
     
         7 . The composition according to  claim 1 , wherein the pulp slurry is autohydrolyzed before mixing with the modified starch. 
     
     
         8 . A paper product having a basis weight below 150 gsm, comprising:
 a blend of hardwood fibers and softwood fibers, wherein a total fiber content is at least 80 wt % of a total weight of the paper product; and   a modified starch, wherein the modified starch is from about 0.02 wt % to about 10 wt % of the total weight of the paper product.   
     
     
         9 . The paper product according to  claim 8 , wherein the modified starch is β-cyclodextrin. 
     
     
         10 . The paper product according to  claim 8 , wherein freeness of pulp is greater than 100 mL. 
     
     
         11 . The paper product according to  claim 8 , wherein the total fiber content comprises from about 50% to about 80% recycled fibers. 
     
     
         12 . The paper product according to  claim 8 , wherein the basis weight is from about 20 to about 90 gsm. 
     
     
         13 . The paper product according to  claim 8 , wherein the total fiber content is comprised of from about 10% to about 30% softwood fibers. 
     
     
         14 . The paper product according to  claim 8 , further comprising at least one of soy lecithin protein and glyoxalated polyacrylamide. 
     
     
         15 . A method for making a paper product, comprising:
 mixing a pulp slurry with an enzymatically modified starch derivative, wherein the pulp slurry comprises a blend of hardwood fibers and softwood fibers.   
     
     
         16 . The method according to  claim 15 , wherein the fibers in the pulp slurry comprise OCC pulp that has been pretreated using autohydrolysis pulping process. 
     
     
         17 . The method according to  claim 15 , further comprising forming pulp from the pulp slurry into a fiber mat. 
     
     
         18 . The method according to  claim 17 , further comprising at least one of creping and drying.