Flushable absorbent composites
AssigneeKimberly-Clark Corporation
InventorThomas M. Kolb
Life of this patent
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Abstract
Absorbent composite structures containing fluff pulp and a superabsorbent material, such as those useful for disposable diapers, can be made to be flushable if the superabsorbent has the requisite properties. It has been found that flushability of such composite structures is enhanced when using superabsorbent materials having a ratio of the Absorbency Under Load (AUL) to the Centrifuge Retention Capacity (CRC) of about 0.70 or greater.
Claims22
A flushable absorbent composite comprising a matrix of fluff pulp fibers and superabsorbent particles wherein the superabsorbent particles have a ratio of the Absorbency Under Load to the Centrifuge Retention Capacity of about 1.10 or greater and a total absorbent capacity of at least 15 times their weight of a 0.9 weight percent solution of sodium chloride in distilled water.
A disposable diaper having a removable flushable absorbent pad containing an absorbent composite comprising a matrix of fluff fibers and about 80 dry weight percent superabsorbent particles based on the combined weight of the superabsorbent particles and the fibers, wherein the superabsorbent particles have a ratio of the Absorbency Under Load to the Centrifuge Retention Capacity of about 1.10 or greater, a 30 Second Absorbent Capacity of about 12 or less and a total absorbent capacity of at least 15 times their weight of a 0.9 weight percent solution of sodium chloride in distilled water.
A flushable absorbent composite comprising a matrix of fluff pulp fibers and about 80 dry weight percent superabsorbent particles or greater based on the combined weight of the superabsorbent particles and the fibers, wherein the superabsorbent particles have a ratio of the Absorbency Under Load to the Centrifuge Retention Capacity of about 1.10 or greater, a 30 second Absorbent Capacity of about 12 or less and a total absorbent capacity of at least 15 times their weight of a 0.9 weight percent solution of sodium chloride distilled water.
A disposable diaper having a removable flushable absorbent pad containing an absorbent composite comprising a matrix of fluff pulp fibers and superabsorbent particles wherein the superabsorbent particles have a ratio of the Absorbency Under Load to the Centrifuge Retention Capacity of about 1.10 or greater and a total absorbent capacity of at least 15 times their weight of a 0.9 weight percent solution of sodium chloride in distilled water.
The diaper of 16 wherein the amount of superabsorbent particles is about 50 dry weight percent or greater, based on the combined weight of the superabsorbent particles and the fibers.
Dependencies are inferred from the claim text.