Patent ID: 7250093

Claim:
A process for producing an absorbent planar structure in which an adhesive and an absorbent are applied to a backing material, comprising (a) producing a mixture consisting of an adhesive in dispersion form and a particulate absorbent by fluidizing the adhesive and the absorbent, said absorbent selected from the group consisting of: i) a polymer containing structural units derived from a (meth)acrylic acid, or salt or ester thereof, ii) a polymer obtained by graft (co)polymerization of a (meth)acrylic acid or a (meth)acrylic ester onto a water-soluble polymer matrix, and iii) a copolymer containing starch and acrylonitrile, vinyl acetate and an acrylate, or acrylonitrile and acrylamide as its monomer building blocks, (b) applying the mixture of step (a) uniformly to a surface of one side of a first planar backing material, (c) applying one side of a second planar backing material to the mixture of step (a) that is present on the surface of one side of the first planar backing material to produce a sandwich-like intermediate, and (d) processing the sandwich-like intermediate at a temperature of at least 90° C., a pressure of from 4 to 50 bar, and a pressing time of from 0.5 to 5 minutes to provide the absorbent planar structure.