Water absorbent fiber web
AssigneeJames River Corporation of Virginia
InventorsJames H. Manning, Kambiz B. Makoui, David H. Hollenberg
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Abstract
A fibrous web having an enhanced capacity for water absorption is produced by impregnating an absorbent fabric with a polymer or copolymer capable of forming by cross-linking an absorbent polymer or copolymer and subsequently heating the treated fabric effecting cross-linking of the polymer to form an absorbent polymer. The product may comprise a non-woven fibrous web or mat having a water-insoluble binder on one surface and a cross-linked hydrophilic polymer or copolymer on its opposite surface.
Claims12
A method of manufacture of a non-woven superabsorbent fabric web which comprises forming an air laid web of cellulosic wood fibers, adding a latex bonding agent to one side of the air laid web and adding to the opposite side of the web at least one polymer precursor and cross-linking agent capable of forming an absorbent polymer upon heating, and then heating the resulting web for a period of time sufficient to cure the bonding agent and form the absorbent polymer.
A method of producing a superabsorbent fabric which comprises impregnating a nonwoven cellulosic fiber web with an aqueous solution of polyacrylic acid adjusted to a pH in the range of from about 4.5 to about 5.5 and about 4 weight percent ammonium zirconium carbonate based on the weight of the acrylic acid as cross-linking agent, and heating the impregnated fabric web for a period of time sufficient to form in situ a solidified hydrophilic polymer.
Dependencies are inferred from the claim text.