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US4892532A
Expired / Lapsed
US
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Disposable liquid-absorbing article
Assignee: Essity Hygiene and Health AB
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Filing: 1987-05-20
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Granted: 1990-01-09
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Expires: 2007-05-20
Abstract
Abstract Disposable liquid-absorbing article such as a diaper, a sanitary napkin or the like incorporating an absorption body (1) and a casing surrounding it. The distinguishing feature of the inventive article is that the body-contacting portion (5) of the casing is composed of a thin hydrophobic layer of fiber fabric of the spun-bonded type, and that there is applied between the casing portion and the absorption body (1) a likewise hydrophobic fiber fabric layer of the melt-bonded type.
Inventors
- 👤 Lars Boman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:02
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/5116; A61F13/51121; A61F13/513; A61F13/51305; A61F13/15203; A61F2013/15284; A61F2013/15406; A61F2013/51002; A61F2013/51038; A61F2013/51042; A61F2013/51178; A61F2013/51182; A61F13/53; A61F13/534; A61F2013/53445
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A disposable liquid-absorbing article such as a diaper, a sanitary napkin or the like comprising an absorption body (1), a casing (5) surrounding said body (1) and having a portion adapted to face the user of the article, said casing (5) being liquid permeable at least in its portion adapted to face the user of the article, characterized in that the liquid-permeable portion of the casing (5) consists of a thin, spun-bonded fibrous fabric layer composed of a hydrophobic material, and in that a similarly constructed hydrophobic fibrous layer of melt-bonded fiber fabric is applied between said casing portion and the absorption body, the latter said layer (2) having a weight per unit area which is greater than that of said casing portion.
Claim 2
Dependent Claim
123 words
A disposable liquid-absorbing article such as a diaper, a sanitary napkin or the like comprising an absorption body (1), a casing (5) surrounding said body (1) and having a portion adapted to face the user of the article, said casing (5) being liquid permeable at least in its portion adapted to face the user of the article, characterized in that the liquid-permeable portion of the casing (5) consists of a thin, spun-bonded fibrous fabric layer composed of a hydrophobic material, and in that a similarly constructed hydrophobic fibrous layer of melt-bonded fiber fabric is applied between said casing portion and the absorption body, the latter said layer (2) having a weight per unit area which is greater than that of said casing portion.
Claim 3
Dependent Claim
28 words
An absorbent article according to claim 1, characterized in that said casing portion made of spun-bonded fiber fabric has a weight less than approx. 15 g/m 2 .
Claim 4
Dependent Claim
29 words
An absorbent article according to claim 2, characterized in that the layer (2) made of melt-bonded fiber fabric has a weight in the order of 20-30 g/m 2 .
Claim 5
Dependent Claim
23 words
An absorbent article according to claim 1, characterized in that the casing in its entirety consists of a thin spun-bonded fiber fabric layer.
Claim 6
Dependent Claim
98 words
An absorbent article according to claim 1, characterized in that the liquid permeable casing portion adapted to face the user of the article extends beyond and is connected around the absorption body (1) with edge portions (8) of a liquid impermeable, second casing portion (9) applied to the side of the absorption body which is opposite the first-mentioned casing portion, and in that also the melt-bonded fiber fabric layer (2) placed inside the liquid permeable casing portion extends beyond the absorption body while being secured between edge portions (6, 8) of said first-mentioned and said second casing portions.
Claim 7
Dependent Claim
41 words
An absorbent article according to claim 1, characterized in that the two fiber fabric layers (2,5) of the spun-bonded and the melt-bonded type, respectively, are non-secured in relation to one another within the liquid permeable portion during use of the article.
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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) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |