Feminine hygiene absorbent articles comprising water-absorbing composites

Abstract

This invention relates to a feminine hygiene absorbent article comprising water-absorbing composites obtainable by foaming an aqueous mixture comprising at least one monoethylenically unsaturated monomer bearing acid groups, at least one crosslinker, at least one initiator and at least one surfactant, contacting the foam obtained with at least one web of synthetic fibers and polymerizing, to the composites themselves and to their use for absorbing aqueous fluids.

What is claimed is: 
     
         1 . A feminine hygiene absorbent article comprising a water-absorbing composite comprising at least one superabsorbent foam layer and at least one web layer, the web composed of synthetic fiber;
 wherein the web is completely penetrated by the foam; and   wherein the web layer swells one-dimensionally when in contact with an aqueous fluid.   
     
     
         2 . The feminine hygiene absorbent article of  claim 1  wherein the foam comprises at least one polymerized monoethylenically unsaturated monomer bearing at least one acid group. 
     
     
         3 . The feminine hygiene absorbent article according to  claim 2  wherein the acid groups of the polymerized monoethylenically unsaturated monomer are at least partly in a neutralized state. 
     
     
         4 . The feminine hygiene absorbent article of  claim 1  wherein the foam comprises at least one polymerized crosslinker. 
     
     
         5 . The feminine hygiene absorbent article of  claim 1  wherein the web is mechanically and/or thermally consolidated. 
     
     
         6 . The feminine hygiene absorbent article of  claim 1  wherein the foam is coated with at least one salt of a multivalent cation. 
     
     
         7 . A feminine hygiene absorbent article of  claim 1 , wherein said composite is obtainable by foaming an aqueous mixture comprising at least one monoethylenically unsaturated monomer bearing acid groups, at least one crosslinker, at least one initiator and at least one surfactant, contacting the resulting foam with a web of synthetic fibers, and polymerizing. 
     
     
         8 . The feminine hygiene absorbent article according to  claim 7  wherein the composite is coated with at least one salt of a multivalent cation after the polymerization. 
     
     
         9 . The feminine hygiene absorbent article of  claim 7  wherein the water content of the composite is adjusted to a value between 1% and 60% by weight. 
     
     
         10 . The feminine hygiene absorbent article of  claim 1 , wherein said feminine hygiene absorbent article comprises a topsheet, a backsheet and an absorbent core comprised therebetween, wherein said absorbent core comprises said composite. 
     
     
         11 . The feminine hygiene absorbent article according to  claim 10 , wherein said feminine hygiene absorbent article is a sanitary napkin or a pantiliner. 
     
     
         12 . The feminine hygiene absorbent article according to  claim 10 , wherein said feminine hygiene absorbent article is an adult incontinence article.