Absorbent articles containing mechanical pulp and polymeric gelling material
AssigneeThe Procter & Gamble Company
InventorsMario S. Marsan, Leonard R. Thompson
Life of this patent
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Abstract
A disposable, absorbent diaper comprising a topsheet, a liquid impervious backsheet associated with the topsheet, and an absorbent core disposed between the topsheet and the backsheet, wherein the absorbent core has a dusting layer of mechanical pulp fibers, 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 a water-permeable core reinforcing layer disposed between the dusting layer and the primary layer. The mechanical pulp fibers, preferably chemithermomechanical pulp fibers, have an average fiber length of at least about 1.9 mm and are in a highly disintegrated condition.
Claims12
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/cm.sup.2 and about 0.20 g/cm.sup.2 and density of between about 0.06 g/cm.sup.3 and about 0.30 g/cm.sup.3 and said primary layer has a basis weight of between about 0.01 g/cm.sup.2 and about 0.20 g/cm.sup.2 and a density of between about 0.06 g/cm.sup.3 and about 0.30 g/cm.sup.3 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.
Dependencies are inferred from the claim text.