US5368910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Macroscopically expanded plastic web having improved fluid drainage
Assignee: Procter and Gamble Co
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Filing: 1993-04-02
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Granted: 1994-11-29
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Expires: 2013-04-02
Abstract
Abstract The present invention provides a resilient, three-dimensional, macroscopically expanded, fluid-pervious, plastic web suitable for use as a topsheet on absorbent articles, especially catamenial articles. The web includes a first layer of polymeric material and a second layer of fibrous material secured to the inner surface of the first layer of polymeric material. The fibrous material of the intermediate layer extends below the second surface of the web, preferably into the absorbent core. In-use, fluid deposited on the topsheet drains or empties more readily as the fibrous material of the second layer breaks up the fluid meniscuses which form along the second surface of the web, thereby providing improved dryness and cleanliness for the user.
Inventors
- 👤 Fred M. Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/5126; A61F13/514; A61F13/51474; A61F13/51478; A61F13/53; A61F13/531; A61F13/532; A61F13/533; A61F13/15577; A61F2013/15821; A61F2013/15829; A61F2013/15926; A61F13/45; A61F13/47; A61F2013/4708; A61F2013/51002; A61F2013/51009; A61F2013/51014; A61F2013/51019; A61F2013/51023; A61F2013/51026; A61F2013/51028; A61F2013/51059; A61F2013/51066; A61F2013/51069; A61F2013/51078; A61F2013/51088; A61F13/5116; A61F2013/51165; A61F2013/5127; A61F13/513; A61F2013/51355; A61F13/51401; A61F2013/51441; A61F2013/51486; A61F2013/5149; A61F2013/530007; A61F2013/530036; A61F2013/530051; A61F2013/530131; A61F2013/53016; A61F2013/530167; A61F2013/530335; A61F2013/530343; A61F2013/530437; A61F2013/530445; A61F2013/530481; A61F2013/53051; A61F2013/530547; A61F2013/530802; A61F13/534; A61F2013/53445; A61F13/56; A61F13/58; A61F2013/582; A61F2013/586; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/674; Y10T442/676; Y10T442/678
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
A three-dimensional, macroscopically expanded, fluid pervious web suitable for use as a topsheet on an absorbent article, said web having a first surface and a second surface, said web comprising: (a) a first layer of polymeric film material, said first layer having an inner surface and an outer surface; (b) a second layer of fibrous material secured to said inner surface of said first layer of polymeric material, said fibrous material extending below said second surface of said web; and (c) a plurality of capillaries extending from said first surface of said web to said second surface of said web for the transmission of fluids through said web, each of said capillaries originating as an aperture in said first surface of said web and having a continuously interconnected sidewall between said first and said second surfaces, said continuously interconnected sidewall terminating to form an aperture in said second surface.
Claim 2
Dependent Claim
149 words
A three-dimensional, macroscopically expanded, fluid pervious web suitable for use as a topsheet on an absorbent article, said web having a first surface and a second surface, said web comprising: (a) a first layer of polymeric film material, said first layer having an inner surface and an outer surface; (b) a second layer of fibrous material secured to said inner surface of said first layer of polymeric material, said fibrous material extending below said second surface of said web; and (c) a plurality of capillaries extending from said first surface of said web to said second surface of said web for the transmission of fluids through said web, each of said capillaries originating as an aperture in said first surface of said web and having a continuously interconnected sidewall between said first and said second surfaces, said continuously interconnected sidewall terminating to form an aperture in said second surface.
Claim 3
Dependent Claim
35 words
The fluid pervious web according to claim 1, wherein said web is a topsheet on an absorbent article, said absorbent article including a backsheet and an absorbent core positioned between said topsheet and said backsheet.
Claim 4
Dependent Claim
22 words
The structure according to claim 2, wherein the fibrous material of said second layer is in fluid-transporting contact with said absorbent core.
Claim 5
Dependent Claim
17 words
The fluid pervious web according to claim 1, wherein said first layer includes a plurality of microapertures.
Claim 6
Dependent Claim
39 words
The fluid pervious web according to claim 1, wherein said first layer includes a multiplicity of capillaries, said capillaries being substantially smaller in cross-section than said capillaries extending from said first surface to said second surface of said web.
Claim 7
Dependent Claim
16 words
The fluid pervious web according to claim 1, wherein said second layer comprises capillary channel fibers.
Claim 8
Dependent Claim
29 words
The fluid pervious web according to claim 1, wherein said second layer is selected from the group consisting of nylon, polyetheylene, polypropylene, polyester, bicomponent binder fibers or cellulosic fibers.
Claim 9
Dependent Claim
18 words
The fluid pervious web according to claim 1, wherein said second layer is secured to said first layer.
Claim 10
Dependent Claim
19 words
The fluid pervious web according to claim 8, wherein said second layer is thermally bonded to said first layer.
Claim 11
Dependent Claim
19 words
The fluid pervious web according to claim 1, wherein said first layer of polymeric material is a coextruded film.
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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 |