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US 5,021,050 AGranted
Absorbent panel structure
AssigneeWeyerhaeuser Company
InventorMichael J. Iskra
Life of this patent
Estimating the term…
Abstract
An absorbent panel structure, for use in a disposable diaper or the like, comprising at least about 400 percent by weight of superabsorbent material and at least one wicking layer of hydrophilic fiber particles. The absorbent panel has an average Taber stiffness value in the machine direction of less than about 7 and an absorptive capacity of at least about 300 ml.
Claims20
An absorbent panel structure, comprising:
- an absorbing layer comprised of a substantially high loft, inherently resilient fibrous web containing at least about 400 percent dry basis weight of superabsorbent material to the dry basis weight of the fibers distributed therein, said fibrous web being maintained in a compressed state by said superabsorbent material such that upon wetting of said superabsorbent material said fibrous web expands from its compressed state due to the inherent resilience of said fibrous web to facilitate swelling of said superabsorbent material;
- at least one wicking layer of densified hydrophilic fiber particles, said at least one wicking layer being coextensive with at least a portion of a respective expansive surface of said fibrous web to promote liquid transport within said absorbing layer;
- and
- said absorbent panel having an average Taber stiffness value in the machine direction of less than about 7, a panel weight of at least about 21 grams, and an absorptive capacity of at least about 300 ml.
1 more element
A disposable diaper including an absorbent panel positioned between a substantially liquid impervious backing sheet and a relatively liquid pervious facing sheet, said absorbent panel comprising:
- an absorbing layer comprised of a substantially high loft, inherently resilient fibrous web containing about 400 percent to about 1200 percent dry basis weight of superabsorbent material to the dry basis weight of the fibers distributed therein, said fibrous web being maintained in a compressed state by said superabsorbent material such that upon wetting of said superabsorbent material said fibrous web expands from its compressed state due to the inherent resilience of said fibrous web to facilitate swelling of said superabsorbent material;
- at least one wicking layer of densified hydrophilic fiber particles, said at least one wicking layer being coextensive with at least a portion of a respective expansive surface of said fibrous web to promote liquid transport within said absorbing layer;
- said absorbent panel having a basis weight from about 12.0 oz/yd.sup.2 to about 17.0 oz/yd.sup.2, a panel weight of at least about 21 grams, an average Taber stiffness value in the machine direction of less than about 7 and an absorptive capacity of at least about 300 ml.
Dependencies are inferred from the claim text.