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US 5,788,684 AGranted
Liquid-absorbing article
AssigneeKimberly-Clark Worldwide, Inc.
InventorsFrank Paul Abuto, Debra Nell Welchel, Carmen Elissa Sullivan
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a liquid-absorbing article which employs a high absorbency material such as superabsorbent particles. The particles are housed within discrete chambers formed within an absorbent core so as to provide access to incoming liquid and ample area for the particles to expand as they absorb the incoming liquid.
Claims21
A liquid-absorbing article comprising:
- a liquid-permeable top sheet and a bottom sheet with an absorbent core disposed therebetween, said absorbent core defining a plurality of apertures therein extending from a top surface through said absorbent core to a bottom surface, said top surface being attached to said top sheet and said bottom surface being attached to said bottom sheet, and a high absorbency material located within at least a portion of said apertures, and wherein either or both said top sheet and said bottom sheet are releasably attached to said absorbent core by attachment means, said attachment means providing a bond strength between said absorbent core and either said top sheet or said bottom sheet which is less than a swelling force exerted on said top sheet or said bottom sheet when said high absorbency material is exposed to an aqueous liquid such that said top sheet or bottom sheet will delaminate from said absorbent core before said top sheet or bottom sheet ruptures from said swelling force.
A liquid-absorbing article comprising:
- a liquid permeable top sheet and a bottom sheet with an absorbent core disposed therebetween, said absorbent core including a first portion and a second portion in vertical registry with one another, said first portion being attached to said top sheet and defining a first plurality of apertures therein and extending therethrough and said second portion being attached to said bottom sheet and defining a second plurality of apertures therein and extending therethrough, at least a portion of said second plurality of apertures not being in vertical registry with said first plurality of apertures, said first plurality of apertures being filled with a high absorbency material and said secondary plurality of apertures being filled with a second high absorbency material, said high absorbency material having an absorption rate which is faster than said second high absorbency material.
A liquid-absorbing article comprising:
- a liquid permeable top sheet and a bottom sheet with an absorbent core disposed therebetween, said absorbent core including a first portion and a second portion in vertical registry with one another, said first portion being attached to said top sheet and defining a first plurality of apertures therein and extending therethrough and said second portion being attached to said bottom sheet and defining a second plurality of apertures therein and extending therethrough, at least a portion of said second plurality of apertures not being in vertical registry with said first plurality of apertures, and a high absorbency material located within at least a portion of either or both of said first and second plurality of apertures, wherein either or both said top sheet and said bottom sheet are releasably attached to said absorbent core by attachment means, said attachment means providing a bond strength between said absorbent core and either said top sheet or said bottom sheet which is less than swelling force exerted on said top sheet or said bottom sheet when said high absorbency material is exposed to an aqueous liquid such that said top sheet or bottom sheet will delaminate from said absorbent core before said top sheet or bottom sheet ruptures from said swelling force.
A liquid-absorbing article comprising:
- a liquid permeable top sheet and a bottom sheet with an absorbent core disposed therebetween, said absorbent core including a first portion and a second portion in vertical registry with one another, said first portion being attached to said top sheet and defining a first plurality of apertures therein and extending therethrough and said second portion being attached to said bottom sheet and defining a second plurality of apertures therein and extending therethrough, at least a portion of said second plurality of apertures not being in vertical registry with said first plurality of apertures, said first plurality of apertures being filled with a high absorbency material and said second plurality of apertures being filled with a second high absorbency material, said high absorbency material having an absorption rate which is slower than said second high absorbency material.
Dependencies are inferred from the claim text.