Absorbent structures with gelling agent and absorbent articles containing such structures

  • US 5,061,259 A
  • Filed: 11/20/1990
  • Issued: 10/29/1991
  • Est. Priority Date: 08/19/1987
  • Status: Expired due to Term
First Claim
Patent Images

1. An absorbent structure suitable for use in disposable absorbent articles, said absorbent structure comprising a web formed from a combination ofA. from about 40% to 95% by weight of the structure of hydrophilic fibers;

  • andB. from about 5% to 60% by weight of the structure of nonfibrous, nonfragile particles of hydrogel-forming polymeric gelling agent having an equilibrium gel volume of at least about 20 grams of synthetic urine per gram of gelling agent, said particles having a mass median particle size ranging from about 400 to 700 microns with no more than about 16% by weight of said particles having a particle size less than 200 microns and no more than about 16% by weight of said particles having a particle size greater than 1000 microns, said particles being thoroughly dispersed among said hydrophilic fibers in said web;

    said web having a density of from about 0.06 g/cm3 to 0.3 g/cm3.

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