Patent US4806408A successfully refreshed from Google Patents.
US4806408A
Expired / Lapsed
US
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Absorbent structure for disposable articles
Assignee: FRANCE FORT JAMES
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Filing: 1986-02-06
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Granted: 1989-02-21
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Expires: 2006-02-06
Abstract
Abstract PCT No. PCT/FR86/00033 Sec. 371 Date Nov. 3, 1986 Sec. 102(e) Date Nov. 3, 1986 PCT Filed Feb. 6, 1986 PCT Pub. No. WO86/05089 PCT Pub. Date Sep. 12, 1986.An absorbent structure for disposable articles, comprising between a permeable sheet (1) and an impermeable sheet (7), a pad comprising successively at least one fibre layer (2, 12, 22, 32), an internal reinforcement sheet permeable to liquids and an absorbent layer provided with improved retention additive particles is characterized in that the internal reinforcement (3, 13, 23, 33) is a non-woven material maintained by gluing (4, 14, 24, 34) to said absorbent layer (5-6, 15-16, 25, 35-36).
Inventors
- 👤 Michel Pierre
- 👤 Remy Ruppel
- 👤 Jean Brellmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:34
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/4702; A61F13/53; A61F13/534; A61F2013/530481; A61F2013/53051; A61F2013/53445; A61F13/539; A61F2013/53908; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/25; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
An absorbent structure for hygienic disposable articles comprising a permeable sheet, an impermeable sheet, and a pad between said permeable and impermeable sheets, said pad comprising successively at least a first layer of fluffed cellulosic material that does not contain improved retention additive; an internal reinforcement layer permeable to liquids made of a non-woven material resistant to moisture and liquid, and an absorbent layer provided with improved liquid-retention additive particles, said internal reinforcement sheet being glued to said absorbent layer.
Claim 2
Dependent Claim
80 words
An absorbent structure for hygienic disposable articles comprising a permeable sheet, an impermeable sheet, and a pad between said permeable and impermeable sheets, said pad comprising successively at least a first layer of fluffed cellulosic material that does not contain improved retention additive; an internal reinforcement layer permeable to liquids made of a non-woven material resistant to moisture and liquid, and an absorbent layer provided with improved liquid-retention additive particles, said internal reinforcement sheet being glued to said absorbent layer.
Claim 3
Dependent Claim
37 words
An absorbent structure according to claim 1 wherein said absorbent layer consists of a fiber layer, the additive particles being deposited on the surface over all or part of said layer adjacent to the internal reinforcement sheet.
Claim 4
Dependent Claim
15 words
An absorbent structure according to claim 2 wherein the reinforcement layer envelops the absorbent layer.
Claim 5
Dependent Claim
28 words
An absorbent structure according to claim 1 wherein the absorbent layer consists essentially of an improved liquid-retention additive and the reinforcement layer is glued against the impermeable sheet.
Claim 6
Dependent Claim
21 words
An absorbent structure according to claim 1 wherein the absorbent layer consists of a fiber layer incorporating improved liquid-retention additive particles.
Claim 7
Dependent Claim
15 words
An absorbent structure according to claim 1 wherein the glue is a hot melt glue.
Claim 8
Dependent Claim
14 words
An absorbent structure according to claim 1 wherein the reinforcement sheet is a grid.
Claim 9
Dependent Claim
18 words
An absorbent structure according to claim 1 wherein the reinforcement sheet is a web of bonded thermoplastic fibers.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |