Foamed composite web with low wet collapse

An absorbent composite foam is provided having a density below 0.04 g/cc and low wet collapse comprising (i) between about 5 to about 40% by wt. fluid resistant fibers; (ii) between about 30 to about 80% by wt. cellulosic fibers; (iii) between about 5 to about 35% by wt. binder; and (iv) a foaming s...

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Bibliographische Detailangaben
Hauptverfasser: Qin, Jian, Calewarts, Deborah J, Waldroup, Donald E
Format: Patent
Sprache:eng
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Zusammenfassung:An absorbent composite foam is provided having a density below 0.04 g/cc and low wet collapse comprising (i) between about 5 to about 40% by wt. fluid resistant fibers; (ii) between about 30 to about 80% by wt. cellulosic fibers; (iii) between about 5 to about 35% by wt. binder; and (iv) a foaming surfactant. The combination of ultra-low density and wet stability is achieved, despite a high proportion of cellulosic fibers, by having both hydrogen bonding between cellulosic fibers as well as inter-fiber bonds formed by the binder.