Patent US5433715A successfully refreshed from Google Patents.
US5433715A
Expired / Lapsed
US
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Absorbent article which includes superabsorbent material located in discrete pockets having water-sensitive and water-insensitive containment structures
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1993-10-29
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Granted: 1995-07-18
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Expires: 2013-10-29
Abstract
Abstract An absorbent article comprises a first, liquid-permeable carrier layer and at least a second carrier layer. A water sensitive attaching mechanism secures together the carrier layers to provide substantially attached zones and substantially unattached zones thereof. The substantially unattached zones provide a plurality of pocket regions, and a high absorbency material is located within the pocket regions to provide an absorbent laminate. A secondary attaching mechanism secures together the carrier layers along selected secondary attachment regions and provides a substantially water-insensitive connection therebetween. The secondary attachment regions are substantially restricted to locations spaced from the pocket regions.
Inventors
- 👤 Richard W. Tanzer
- 👤 Frank P. Abuto
- 👤 Stanley R. Kellenberger
- 👤 Daniel R. Laux
- 👤 Brian K. Nortman
- 👤 William S. Pomplun
- 👤 Carl G. Rippl
- 👤 Mark L. Robinson
- 👤 Lorry F. Sallee
- 👤 Wen Z. Schroeder
- 👤 Sandra M. Yarbrough
- 👤 David L. Zenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:37
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/532; A61F13/5323
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
155 words
An absorbent article, comprising: a first, liquid-permeable carrier layer and at least a second carrier layer; water-sensitive attaching means for securing together said carrier layers at substantially attached first zones thereof, said carrier layers having substantially unattached zones providing a plurality of pocket regions with said substantially attached first zones located between said pocket regions; high-absorbency material located within said pocket regions to provide an absorbent laminate; and secondary attaching means for securing together said carrier layers along selected secondary attachment regions and providing a substantially water-insensitive connection therebetween, said secondary attachment regions substantially restricted to locations spaced from said pocket regions; wherein, said water-sensitive attachment means in said substantially attached first zones provides a wet strength adequate to hold said carrier layers together when wet, and wherein said wet strength is less than a separating force imparted by a swelling of said high-absorbency material when said high-absorbency material is exposed to an aqueous liquid.
Claim 2
Dependent Claim
155 words
An absorbent article, comprising: a first, liquid-permeable carrier layer and at least a second carrier layer; water-sensitive attaching means for securing together said carrier layers at substantially attached first zones thereof, said carrier layers having substantially unattached zones providing a plurality of pocket regions with said substantially attached first zones located between said pocket regions; high-absorbency material located within said pocket regions to provide an absorbent laminate; and secondary attaching means for securing together said carrier layers along selected secondary attachment regions and providing a substantially water-insensitive connection therebetween, said secondary attachment regions substantially restricted to locations spaced from said pocket regions; wherein, said water-sensitive attachment means in said substantially attached first zones provides a wet strength adequate to hold said carrier layers together when wet, and wherein said wet strength is less than a separating force imparted by a swelling of said high-absorbency material when said high-absorbency material is exposed to an aqueous liquid.
Claim 3
Dependent Claim
24 words
An absorbent article as recited in claim 1, wherein said secondary attaching means is substantially restricted to an outer periphery of said absorbent laminate.
Claim 4
Dependent Claim
32 words
An absorbent article as recited in claim 1, wherein said secondary attaching means is substantially restricted to an outer periphery of said absorbent laminate and interstitial locations between immediately adjacent pocket regions.
Claim 5
Dependent Claim
53 words
An absorbent article, as recited in claim 1, wherein said water-sensitive attachment means is configured to release at an applied load which is less than a load needed to delaminate said attachment means without excessively tearing at least one of said carrier layers when said carrier layers are wetted with an aqueous liquid.
Claim 6
Dependent Claim
24 words
An absorbent article, as recited in claim 1, wherein said water-sensitive attachment means provides a wet bond strength of not less than about 0.04N/cm.
Claim 7
Dependent Claim
24 words
An absorbent article, as recited in claim 5, wherein said water-sensitive attachment means provides a wet bond strength of not more than about 5N/cm.
Claim 8
Dependent Claim
23 words
An absorbent article, as recited in claim 1, wherein said water-sensitive attaching means provides a dry bond strength of at least about 0.05N/cm.
Claim 9
Dependent Claim
22 words
An absorbent article, as recited in claim 1, wherein said first carrier layer has a burst strength of at least about 0.08N/cm.
Claim 10
Dependent Claim
22 words
An absorbent article, as recited in claim 8, wherein said second carrier layer has a burst strength of at least about 0.08N/cm.
Claim 11
Dependent Claim
18 words
An absorbent article, as recited in claim 9, wherein said first carrier layer comprises a wettable fibrous web.
Claim 12
Dependent Claim
22 words
An absorbent article, as recited in claim 10, wherein said second carrier layer is liquid permeable and comprises a wettable, fibrous web.
Claim 13
Dependent Claim
38 words
An absorbent article, as recited in claim 11, wherein at least one of said carrier layers is a web which includes meltblown fibers and wherein said meltblown web is configured to provide water-sensitivity to said water-sensitive attaching means.
Claim 14
Dependent Claim
25 words
An absorbent article, as recited in claim 11, wherein at least one of said carrier layers is a high wet-strength tissue composed of cellulosic fibers.
Claim 15
Dependent Claim
33 words
An absorbent article as recited in claim 1, wherein said secondary attaching means includes lines of substantially water-insensitive attachment, said attachment lines having a width dimension of not more than about 3 cm.
Claim 16
Dependent Claim
19 words
An absorbent article as recited in claim 14, wherein said secondary attaching means includes lines of substantially water-insoluble adhesive.
Claim 17
Dependent Claim
18 words
An absorbent article as recited in claim 14, wherein said secondary attaching means includes lines of thermal bonds.
Claim 18
Dependent Claim
24 words
An absorbent article as recited in claim 14, wherein said water-sensitive attachment means provides a wet bond strength of not less than about 0.07N/cm.
Claim 19
Dependent Claim
24 words
An absorbent article as recited in claim 14, wherein said water-sensitive attachment means provides a wet bond strength of not less than about 0.09N/cm.
Claim 20
Dependent Claim
24 words
An absorbent article as recited in claim 18, wherein said water-sensitive attachment means provides a wet bond strength of not more than about 2N/cm.
Claim 21
Dependent Claim
24 words
An absorbent article as recited in claim 18, wherein said water-sensitive attachment means provides a wet bond strength of not more than about 1N/cm.
Claim 22
Dependent Claim
28 words
An absorbent article, as recited in claim 1, wherein said pocket regions are spaced apart from one another by a distance of not less than about 0.15 cm.
Claim 23
Dependent Claim
29 words
An absorbent article, as recited in claim 21, wherein immediately adjacent pocket regions are spaced apart from each other by a distance of not more than about 3 cm.
Claim 24
Dependent Claim
25 words
An absorbent article, as recited in claim 22, further comprising a surge management layer positioned generally adjacent a major bodyside surface of said absorbent laminate.
Claim 25
Dependent Claim
36 words
An absorbent article, as recited in claim 23, wherein said surge management layer is composed of a nonwoven fibrous web composed of synthetic fibers and having a basis weight within the range of about 24-300 gsm.
Claim 26
Dependent Claim
25 words
An absorbent article, as recited in claim 23, further comprising a distribution layer positioned next to a major outer side surface of said absorbent laminate.
Claim 27
Dependent Claim
31 words
An absorbent article, as recited in claim 23, wherein said distribution layer has a length which is within the range of about 75-175% of a corresponding length of said absorbent laminate.
Claim 28
Dependent Claim
31 words
An absorbent article, as recited in claim 26, wherein said distribution layer has a width which is within the range of about 75-175% of a corresponding width of said absorbent laminate.
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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) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |