Patent ID: 9265855
Filing Date: 2016-02-23
CPC Classification: A61F,A61L,Y10T

Claim Text:
1. A feminine hygiene absorbent article comprising a composite comprising a superabsorbent foam and a fibrous web layer, wherein the superabsorbent foam is obtainable by foaming an aqueous mixture comprising at least one polymerizable monoethylenically unsaturated monomer bearing acid groups, at least one polymerizable crosslinker and at least one surfactant, polymerizing the foamed mixture and drying the polymerized mixture, wherein the foamed mixture comprises at least 1% by weight, based on the monomer, of at least one compound capable of thermal decomposition with gas formation; wherein the compound capable of thermal decomposition with gas formation is urea; wherein the superabsorbent foam further comprises a coating; wherein the fibrous web layer is composed of synthetic fiber, has a basis weight of no more than 200 g/m wherein the synthetic fiber is selected from the group consisting of polyethylene, polypropylene, polybutylene terephthalate, polyamide, polyethylene terephthalate, polyester, polysulfone, and polyether ketone; wherein a full thickness of the fibrous web layer is completely penetrated by the superabsorbent foam such that the superabsorbent foam has an integral fibrous web support; and wherein the composite only swells one-dimensionally when in contact with an aqueous fluid such that the composite swells in a thickness direction while an area of the composite remains unchanged.