Fibrous structures and methods for making same

Abstract

Fibrous structures containing a plurality of solid additives and a plurality of filaments are provided.

What is claimed is: 
     
         1 . A fibrous structure comprising a plurality of filaments comprising one or more polysaccharides, wherein the fibrous structure exhibits a Tensile Ratio of 2 or less as measured according to the Dry Tensile Strength Test Method. 
     
     
         2 . The fibrous structure according to  claim 1  wherein at least one of the one or more polysaccharides is selected from the group consisting of: starch, starch derivatives, starch copolymers, chitosan, chitosan derivatives, chitosan copolymers, cellulose, cellulose derivatives, cellulose copolymers, hemicellulose, hemicellulose derivatives, hemicellulose copolymers, and mixtures thereof 
     
     
         3 . The fibrous structure according to  claim 2  wherein the at least one polysaccharide comprises acid-thinned starch. 
     
     
         4 . The fibrous structure according to  claim 1  wherein at least one of the filaments further comprises a hydroxyl polymer selected from the group consisting of: polyvinyl alcohol, polyvinyl alcohol derivatives, polyvinyl alcohol copolymers, gums, arabinans, galactans, proteins, and mixtures thereof 
     
     
         5 . The fibrous structure according to  claim 1  wherein at least one of the filaments further comprises a polymer selected from the group consisting of: polyacrylamide and its derivatives;
 polyacrylic acid, polymethacrylic acid, and their esters; polyethyleneimine; copolymers made from mixtures of monomers of the aforementioned polymers; and mixtures thereof. 
 
     
     
         6 . The fibrous structure according to  claim 5  wherein the polymer exhibits a weight average molecular weight of greater than 500,000 g/mol. 
     
     
         7 . The fibrous structure according to  claim 5  wherein the polymer comprises polyacrylamide. 
     
     
         8 . The fibrous structure according to  claim 1  wherein at least one of the filaments further comprises a surfactant. 
     
     
         9 . The fibrous structure according to  claim 8  wherein the surfactant comprises a sulfosuccinate surfactant. 
     
     
         10 . The fibrous structure according to  claim 1  wherein the fibrous structure exhibits a basis weight of from about 10 g/m 2  to about 120 g/m 2 . 
     
     
         11 . The fibrous structure according to  claim 1  wherein the fibrous structure further comprises one or more solid additives. 
     
     
         12 . The fibrous structure according to  claim 11  wherein the at least one of the solid additives comprises a pulp fiber. 
     
     
         13 . The fibrous structure according to  claim 12  wherein the pulp fiber is selected from the group consisting of hardwood pulp fibers, softwood pulp fibers, and mixtures thereof 
     
     
         14 . The fibrous structure according to  claim 13  wherein one or more of the solid additives are present on a surface of the fibrous structure. 
     
     
         15 . The fibrous structure according to  claim 14  wherein the fibrous structure further comprises a scrim connected to the surface of the fibrous structure such that the solid additives are positioned between the scrim and the surface of the fibrous structure. 
     
     
         16 . The fibrous structure according to  claim 15  wherein the scrim material is bonded to the surface of the fibrous structure at one or more bond sites. 
     
     
         17 . A single- or multi-ply sanitary tissue product comprising a fibrous structure according to  claim 1 . 
     
     
         18 . A method for making a fibrous structure according to  claim 1 , the method comprising the steps of:
 a. providing a plurality of filaments from a filament source; and   b. collecting the filaments on a collection device to form a fibrous structure such that the fibrous structure exhibits a Tensile Ratio of  2  or less as measured according to the Tensile Ratio Test Method.   
     
     
         19 . The method according to  claim 18  wherein the method further comprises the step of:
 c. providing a plurality of solid additives from a solid additive source such that the solid additives are collected on a surface of the fibrous structure. 
 
     
     
         20 . The method according to  claim 19  wherein the method further comprises the steps of:
 d. providing a scrim material; and 
 e. bonding the scrim material to the surface of the fibrous structure such that the solid additives are position between the scrim material and the surface of the fibrous structure.