Fibrous structures with improved surface properties and cold water solubility

Abstract

Fibrous structures having improved surface smoothness, good wet feel, and are cold water soluble.

What is claimed is: 
     
         1 . A fibrous structure comprising a first web material and a surface comprising a surface material different from the first web material, wherein the surface material comprises a blended PVOH fiber composition comprising:
 a blend of a first PVOH having a level of hydrolysis between about 70% to about 90% and a second PVOH having a level of hydrolysis between about 92% to about 99%;   wherein the amount of the first PVOH is between about 35% to 75% and the amount of the second PVOH is between about 25% to about 65%, based on the weight of the blended PVOH fiber composition;   wherein the blended PVOH fiber composition has a crystallinity of less than 40% and a level of hydrolysis of at least 90%; and   
       wherein the blended PVOH fiber composition is cold water soluble. 
     
     
         2 . The fibrous structure according to  claim 1  having a TS7 value of less than 7.9. 
     
     
         3 . The fibrous structure according to  claim 1  having a Finished Product Wet Tack Area of less than 9,500 mg/cm. 
     
     
         4 . The fibrous structure according to  claim 1  having a Finished Product Wet Tack Area of less than 8,600 mg/cm. 
     
     
         5 . The fibrous structure according to  claim 1  wherein the first web material comprises a plurality of fibrous elements. 
     
     
         6 . The fibrous structure according to  claim 5  wherein at least one of the fibrous elements comprises a fiber. 
     
     
         7 . The fibrous structure according to  claim 6  wherein the fiber comprises a pulp fiber. 
     
     
         8 . The fibrous structure according to  claim 6  wherein the fiber comprises a non-naturally occurring fiber. 
     
     
         9 . The fibrous structure according to  claim 5  wherein at least one of the fibrous elements comprises a filament. 
     
     
         10 . The fibrous structure according to  claim 1  wherein the first web material comprises a wet laid fibrous structure ply. 
     
     
         11 . The fibrous structure according to  claim 1  wherein the surface of the fibrous structure further comprises at least a portion of the first web material. 
     
     
         12 . The fibrous structure according to  claim 1  wherein the surface material is associated with the first web material. 
     
     
         13 . The fibrous structure according to  claim 12  wherein the surface material is associated with the first web material through one or more bond sites. 
     
     
         14 . The fibrous structure according to  claim 1  wherein the surface material comprises a second web material. 
     
     
         15 . The fibrous structure according to  claim 14  wherein the second web material comprises a plurality of fibrous elements. 
     
     
         16 . The fibrous structure according to  claim 15  wherein at least one of the fibrous elements comprises a fiber. 
     
     
         17 . The fibrous structure according to  claim 16  wherein the fiber comprises a non-naturally occurring fiber. 
     
     
         18 . The fibrous structure according to  claim 17  wherein the non-naturally occurring fiber comprises a polysaccharide. 
     
     
         19 . The fibrous structure according to  claim 18  wherein the polysaccharide is selected from the group consisting of: cellulose, cellulose derivatives, starch, starch derivatives, hemicelluloses, hemicelluloses derivatives, and mixtures thereof. 
     
     
         20 . The fibrous structure according to  claim 15  wherein at least one of the fibrous elements comprises a filament. 
     
     
         21 . The fibrous structure according to  claim 20  wherein the filament comprises polyvinyl alcohol. 
     
     
         22 . The fibrous structure according to  claim 20  wherein the filament comprises a polysaccharide. 
     
     
         23 . A blended PVOH fiber composition comprising:
 a blend of a first PVOH having a level of hydrolysis between about 70% to about 90% and a second PVOH having a level of hydrolysis between about 92% to about 99%;   wherein the amount of the first PVOH is between about 35% to 75% and the amount of the second PVOH is between about 25% to about 65%, based on the weight of the blended PVOH fiber composition;   wherein the blended PVOH fiber composition has a crystallinity of less than 40% and a level of hydrolysis of at least 90%; and   wherein the blended PVOH fiber composition is cold water soluble.   
     
     
         24 . The blended PVOH composition according to  claim 23 , wherein the hydrolysis level of the first PVOH is between about 80% to about 90% and the amount of the first PVOH is from about 45% to about 65%. 
     
     
         25 . The blended PVOH composition according to  claim 23 , wherein the hydrolysis level of the second PVOH is between about 92% to about 97% and the amount of the second PVOH is from about 35% to about 60%. 
     
     
         26 . A method of producing a blended PVOH fiber composition comprising:
 providing a first PVOH having a level of hydrolysis between about 70% to about 90%;   providing a second PVOH having a level of hydrolysis between about 92% to about 99%;   blending the first and second PVOH to produce a PVOH fiber composition;   wherein the amount of the first PVOH is between about 35% to 75% and the amount of the second PVOH is between about 25% to about 65%, based on the weight of the blended PVOH fiber composition.