Multi-layer absorbent composite
First Claim
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1. An absorbent structure, said absorbent structure comprising:
- a first surge management layer comprising a fibrous web, said first surge management layer having a basis weight of from about 20 to about 200 grams per square meter, and a density of from about 0.01 to about 0.12 gram per cubic centimeter;
a second surge management layer comprising a fibrous web, said web comprising hydrophilic fibers, said second surge management layer having a basis weight of from about 20 to about 350 grams per square meter and a density of from about 0.04 to about 0.25 gram per cubic centimeter; and
an absorbent layer located between and in liquid communication with said first and second surge management layers, said absorbent layer comprising means for containing a high-absorbency material and from about 50 to about 100 weight percent, based on total weight of said absorbent layer, of a high-absorbency material contained by said means for containing a high-absorbency material, said absorbent layer having a basis weight of from about 200 to about 1000 grams per square meter and a density of from about 0.06 to about 0.4 gram per cubic centimeter wherein the density of said absorbent layer is greater than the density of said first and second surge management layers and the density of the first surge management layer is different than the density of said second surge management layer.
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Abstract
Disclosed is an absorbent structure comprising first and second surge management layers and an absorbent layer located between said first and second surge management layers. The first surge management layer comprises synthetic polymeric fibers and the second surge management layer comprises hydrophilic fibers. The density of the absorbent layer is greater than the density of the first and second surge management layers.
133 Citations
23 Claims
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1. An absorbent structure, said absorbent structure comprising:
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a first surge management layer comprising a fibrous web, said first surge management layer having a basis weight of from about 20 to about 200 grams per square meter, and a density of from about 0.01 to about 0.12 gram per cubic centimeter; a second surge management layer comprising a fibrous web, said web comprising hydrophilic fibers, said second surge management layer having a basis weight of from about 20 to about 350 grams per square meter and a density of from about 0.04 to about 0.25 gram per cubic centimeter; and an absorbent layer located between and in liquid communication with said first and second surge management layers, said absorbent layer comprising means for containing a high-absorbency material and from about 50 to about 100 weight percent, based on total weight of said absorbent layer, of a high-absorbency material contained by said means for containing a high-absorbency material, said absorbent layer having a basis weight of from about 200 to about 1000 grams per square meter and a density of from about 0.06 to about 0.4 gram per cubic centimeter wherein the density of said absorbent layer is greater than the density of said first and second surge management layers and the density of the first surge management layer is different than the density of said second surge management layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An absorbent structure, said structure comprising a first surge management layer, said first surge management layer comprising a fibrous web, said fibrous web comprising nonsynthetic polymeric fibers, said first surge management layer having a basis weight of from about 30 to about 150 grams per square meter and a density of from about 0.015 to about 0.1 grams per cubic centimeter;
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a second surge management layer, said second surge management layer comprising a fibrous web, said fibrous web comprising from about 55 to about 100 weight percent hydrophilic fibers, said second surge management layer having a basis weight of from about 50 to about 200 grams per square meter, and a density of from about 0.06 to about 0.16 grams per cubic centimeter; and an absorbent layer located between and in liquid communication with said first and second surge management layers, said absorbent layer comprising means for containing a high-absorbency material and from about 50 to about 100 weight percent, based on total weight of the absorbent layer, of a high-absorbency material contained by said means for containing a high-absorbency material, said absorbent layer having a basis weight of from about 250 to about 750 grams per square meter and a density of from about 0.12 to about 0.35 gram per cubic centimeter wherein the density of said absorbent layer is greater than the density of both of said first and second surge management layers, and the densities of the first and second surge management layers are different.
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21. An absorbent product, said absorbent product comprising:
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a liquid-impermeable bodyside liner; a substantially liquid-impermeable outer cover; and an absorbent structure located between said liner and outer cover said absorbent structure comprising; a first surge management layer comprising a fibrous web, said web comprising synthetic polymeric fibers, said first surge management layer having a basis weight of from about 20 to about 200 grams per square meter, and a density of from about 0.01 to about 0.12 grams per cubic centimeter; a second surge management layer comprising a fibrous web, said web comprising hydrophilic fibers, said second surge management layer having a basis weight of from about 20 to about 350 grams per square meter and a density of from about 0.04 to about 0.25 gram per cubic centimeter; and an absorbent layer located between and in liquid communication with said first and second surge management layers, said absorbent layer comprising means for containing a high-absorbency material and from about 50 to about 100 weight percent, based on total weight of said absorbent layer, of a high-absorbency material contained by said means for containing a high-absorbency material, said absorbent layer having a basis weight of from about 200 to about 1000 grams per square meter and a density of from about 0.06 to about 0.4 gram per cubic centimeter wherein the density of said absorbent layer is greater than the density of said first and second surge management layers and the density of the first surge management layer is different than the density of said second surge management layer. - View Dependent Claims (22)
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23. An absorbent structure, said absorbent structure comprising:
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a first surge management layer comprising a fibrous web, said web comprising nonsynthetic polymeric fibers, said first surge management layer having a basis weight of from about 20 to about 200 grams per square meter, and a density of from about 0.01 to about 0.12 gram per cubic centimeter; a second surge management layer comprising a fibrous web, said web comprising hydrophilic fibers, said second surge management layer having a basis weight of from about 20 to about 350 grams per square meter and a density of from about 0.04 to about 0.25 gram per cubic centimeter; and an absorbent layer located between and in liquid communication with said first and second surge management layers, said absorbent layer comprising a fibrous web containing from about 50 to about 100 weight percent, based on total weight of said absorbent layer, of a high-absorbency material, said absorbent layer having a basis weight of from about 200 to about 1000 grams per square meter and a density of from about 0.06 to about 0.4 gram per cubic centimeter wherein the density of said absorbent layer is greater than the density of said first and second surge management layers and the density of the first surge management layer is different than the density of said second surge management layer.
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Specification