Patent US5368926A successfully refreshed from Google Patents.
US5368926A
Expired / Lapsed
US
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Fluid accepting, transporting, and retaining structure
Assignee: Clemson University Research Foundation
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Filing: 1992-09-10
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Granted: 1994-11-29
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Expires: 2012-09-10
Abstract
Abstract The present invention provides a fluid accepting, transporting and retaining structure, useful in disposable absorbent articles. In-use fluid deposited on a disposable absorbent article employing such a structure is moved via interfiber and intrafiber transport to a fluid retention area remote from the point of fluid insult. By moving fluid away from the point of insult a more effective use of the absorbent core is achieved providing a clean and dry surface for the wearer.
Inventors
- 👤 Hugh A. Thompson
- 👤 Tracey A. Martin
- 👤 Thomas A. Inglin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:06
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; D; D01; D01D; D01D5/00; D01D5/253; A61F13/53; A61F13/534; A61F13/537; A61F13/538; A61F13/45; A61F13/49; A61F13/495; A61F2013/4958; A61F13/51121; A61F2013/51147; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/530131; A61F2013/53016; A61F2013/530175; A61F2013/530226; A61F2013/530299; A61F2013/530437; A61F2013/530445; A61F2013/530481; A61F2013/530802; A61F13/53708; A61F2013/53721; A61F2013/53726; A61F2013/53795; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3707; Y10T442/3854; Y10T442/3886; Y10T442/60; Y10T442/608; Y10T442/609; Y10T442/612; Y10T442/659; Y10T442/674; Y10T442/678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
An absorbent article comprising: (a) a fluid pervious topsheet, said topsheet comprising a nonwoven comprised of a plurality of hydrophilic capillary channel fibers capable of intrafiber and interfiber fluid acceptance and transport, said fibers having at least one capillary channel formed from a base and two substantially parallel walls extending from the base said topsheet having a predetermined capillary suction; (b) a fluid impervious backsheet joined to said topsheet; and (c) a high-suction absorbent core positioned between said topsheet and said backsheet, said core having an uppermost surface facing said topsheet and a lowermost surface facing said backsheet said absorbent core having a capillary suction greater than that of said topsheet.
Claim 2
Dependent Claim
111 words
An absorbent article comprising: (a) a fluid pervious topsheet, said topsheet comprising a nonwoven comprised of a plurality of hydrophilic capillary channel fibers capable of intrafiber and interfiber fluid acceptance and transport, said fibers having at least one capillary channel formed from a base and two substantially parallel walls extending from the base said topsheet having a predetermined capillary suction; (b) a fluid impervious backsheet joined to said topsheet; and (c) a high-suction absorbent core positioned between said topsheet and said backsheet, said core having an uppermost surface facing said topsheet and a lowermost surface facing said backsheet said absorbent core having a capillary suction greater than that of said topsheet.
Claim 3
Dependent Claim
28 words
The structure according to claim 1 wherein the capillary channel width of the capillary channel fibers of said nonwoven is from about 10 microns to about 200 microns.
Claim 4
Dependent Claim
22 words
The structure according to claim 1 wherein the denier of said capillary channel fibers of said nonwoven is greater than about 5.
Claim 5
Dependent Claim
27 words
The structure according to claim 1 wherein the divergence of the substantially parallel walls of the capillary channel fibers of said topsheet is less than about 40°.
Claim 6
Dependent Claim
23 words
The structure according to claim 1 wherein the slenderness ratio of said capillary channel fibers forming said topsheet is at least about 9.
Claim 7
Dependent Claim
20 words
The structure according to claim 1 wherein the capillary suction of said absorbent core is at least about 6 cm.
Claim 8
Dependent Claim
90 words
An absorbent article comprising: (a) a fluid pervious topsheet, said topsheet comprising a nonwoven comprised of a plurality of hydrophilic capillary channel fibers capable of intrafiber and interfiber fluid acceptance and transport, said topsheet having a predetermined capillary suction; (b) a fluid impervious backsheet joined to said topsheet; and (c) a high-suction absorbent core positioned between said topsheet and said backsheet, said core having an uppermost surface facing said topsheet and a lowermost surface facing said backsheet, said absorbent core having a capillary suction greater than that of said topsheet.
Claim 9
Dependent Claim
90 words
An absorbent article comprising: (a) a fluid pervious topsheet, said topsheet comprising a nonwoven comprised of a plurality of hydrophilic capillary channel fibers capable of intrafiber and interfiber fluid acceptance and transport, said topsheet having a predetermined capillary suction; (b) a fluid impervious backsheet joined to said topsheet; and (c) a high-suction absorbent core positioned between said topsheet and said backsheet, said core having an uppermost surface facing said topsheet and a lowermost surface facing said backsheet, said absorbent core having a capillary suction greater than that of said topsheet.
Claim 10
Dependent Claim
23 words
The structure according to claim 7, wherein the slenderness ratio of said capillary channel fibers forming said nonwoven is at least about 9.
Claim 11
Dependent Claim
20 words
The structure according to claim 7, wherein the capillary suction of said absorbent core is at least about 6 cm.
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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) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |