US5558655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent article with dry surface composite construction
Assignee: Confab Inc
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Filing: 1994-05-03
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Granted: 1996-09-24
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Expires: 2014-05-03
Abstract
Abstract An absorbent article, e.g. or a diaper, is disclosed which comprises a composite structure of a "two-dimensional" or very flat, apertured film or nonwoven layer, in combination with a fluid transferring layer and a superabsorbent polymer-containing laminate, and an absorbent core below the laminate to achieve superior dryness. The superabsorbent polymer-containing laminate, which contains airlaid fibrous components and superabsorbent polymers, swells to at least three times its dry caliper upon fluid introduction in order to achieve movement of the coverstock away from the absorbent core which permits the coverstock to remain relatively dry and avoids rewetting.
Inventors
- 👤 Arrigo D. Jezzi
- 👤 Charles F. Schroer, Jr.
- 👤 Caroline Gephart
- 👤 Daniel D. Biesterveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:38
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/15203
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
128 words
An absorbent article which minimizes rewet comprising: a multi-layered coverstock having top and bottom layers, wherein the top layer is a two dimensional apertured film having a total open area of 35% or less and the bottom layer is a fluid transferring material; a superabsorbent polymer-containing laminate which swells to at least three time its dry caliper upon wetting situated below said fluid transferring material; an absorbent core below said laminate; and a liquid impermeable backsheet below said absorbent core, wherein said superabsorbent polymer-containing laminate and absorbent core are situated between said coverstock and liquid impermeable backsheet wherein said superabsorbent polymer-containing laminate moves at least a portion of said coverstock away from said absorbent core to substantially prevent fewer of said coverstock by fluid contained within said core.
Claim 2
Dependent Claim
128 words
An absorbent article which minimizes rewet comprising: a multi-layered coverstock having top and bottom layers, wherein the top layer is a two dimensional apertured film having a total open area of 35% or less and the bottom layer is a fluid transferring material; a superabsorbent polymer-containing laminate which swells to at least three time its dry caliper upon wetting situated below said fluid transferring material; an absorbent core below said laminate; and a liquid impermeable backsheet below said absorbent core, wherein said superabsorbent polymer-containing laminate and absorbent core are situated between said coverstock and liquid impermeable backsheet wherein said superabsorbent polymer-containing laminate moves at least a portion of said coverstock away from said absorbent core to substantially prevent fewer of said coverstock by fluid contained within said core.
Claim 3
Dependent Claim
11 words
The absorbent article of claim 1, wherein said coverstock is hydrophobic.
Claim 4
Dependent Claim
17 words
The absorbent article of claim 1, wherein said fluid transferring material is a thermally bonded nonwoven material.
Claim 5
Dependent Claim
15 words
The absorbent article of claim 3, wherein said fluid transferring material has a high loft.
Claim 6
Dependent Claim
22 words
The absorbent article of claim 1, wherein said superabsorbent polymer-containing laminate comprises a superabsorbent polymer sandwiched between layers of airlaid fibrous material.
Claim 7
Dependent Claim
21 words
The absorbent article of claim 1, wherein said absorbent core comprises an upper layer and a lower layer of fibrous material.
Claim 8
Dependent Claim
23 words
The absorbent article of claim 6, wherein said fibrous material in at least one of said layers is modified with a latex binder.
Claim 9
Dependent Claim
26 words
The absorbent article of claim 7, wherein said latex binder is selected from the group consisting of a polyvinyl acetate copolymer and an ethylenevinyl acetate copolymer.
Claim 10
Dependent Claim
20 words
The absorbent article of claim 1, wherein said apertured film has an embossed caliper of less than about 0.020 inch.
Claim 11
Dependent Claim
24 words
The absorbent article of claim 1, wherein said apertured film has an equivalent hydraulic diameter greater than 0.025 inch but less than 0.050 inch.
Claim 12
Dependent Claim
24 words
The absorbent article of claim 3, wherein said thermally bonded nonwoven material has a basis weight of less than 40 grams per square meter.
Claim 13
Dependent Claim
21 words
The absorbent article of claim 3, wherein said thermally bonded nonwoven material has an embossed caliper of less than 0.020 inch.
Claim 14
Dependent Claim
21 words
The absorbent article of claim 3, wherein said thermally bonded nonwoven material has an embossed surface area of less than 25%.
Claim 15
Dependent Claim
19 words
The absorbent article of claim 1, wherein the total caliper of the multi-layered coverstock is greater than 0.030 inch.
Claim 16
Dependent Claim
14 words
The absorbent article of claim 1, wherein said absorbent article is a sanitary napkin.
Claim 17
Dependent Claim
13 words
The absorbent article of claim 1, wherein said absorbent article is a diaper.
Claim 18
Dependent Claim
14 words
The absorbent article of claim 16, wherein said absorbent article is an incontinent pad.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-24 | 2000-03-25 | 2000-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-24 | 2004-03-25 | 2004-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-24 | 2008-03-25 | 2008-09-24 | $7700.00 | Window Closed / Lapsed |