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Absorbent articles containing mechanical pulp and polymeric gelling material

  • US 5,019,063 A
  • Filed: 10/30/1989
  • Issued: 05/28/1991
  • Est. Priority Date: 10/30/1989
  • Status: Expired due to Term
First Claim
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1. A disposable, absorbent diaper comprising:

  • (a) a topsheet;

    (b) a liquid impervious backsheet associated with said topsheet; and

    (c) an absorbent core disposed between said topsheet and said backsheet, said absorbent core having;

    (i) a dusting layer of mechanical pulp fibers;

    (ii) a continuous primary layer of mechanical pulp fibers containing from about 8% to about 60%, on a total primary layer dry weight basis, of discrete particles of polymeric gelling material; and

    (iii) a water-permeable core reinforcing layer disposed between said dusting layer and said primary layer;

    wherein;

    said mechanical pulp fibers have an average fiber length of at least about 1.9 mm and are characterized by a Distintegration State of at least about 85%;

    said dusting layer has a basis weight of between about 0.01 g/cm2 and about 0.20 g/cm2 and density of between about 0.06 g/cm3 and about 0.30 g/cm3 and said primary layer has a basis weight of between about 0.01 g/cm2 and about 0.20 g/cm2 and a density of between about 0.06 g/cm3 and about 0.30 g/cm3 and said absorbent core is oriented such that said primary layer is disposed toward said topsheet and said dusting layer is disposed toward said backsheet.

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