US4480000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent article
Assignee: Anne Co Ltd
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Filing: 1982-06-15
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Granted: 1984-10-30
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Expires: 2002-06-15
Abstract
Abstract Improved absorbent articles such as sanitary napkins and disposable diapers are provided. The absorbent articles have (1) an absorbent core layer, (2) a barrier covering the lateral faces and underneath face of the absorbent core layer, (3) a web placed on the top of the absorbent core layer, and (4) a nonwoven fabric wrapped around the above-mentioned (1), (2) and (3). The nonwoven fabric is comprised of 10-70 wt. % of a regenerated cellulose fiber, 5-60 wt. % of a polyester fiber and 25-75 wt. % of a heat-bondable composite polyolefin fiber, and the web is predominantly comprised of a polyester fiber. The absorbent articles absorb a body fluid at an enhanced rate and have a feeling of dryness even after such absorption.
Inventors
- 👤 Isao Watanabe
- 👤 Toshinobu Kashiwada
- 👤 Hiroshi Suzuki
- 👤 Junji Yoshii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:00
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/475; A61F13/4751; A61F13/4755; A61F13/51; A61F13/511; A61F13/51121; A61F13/513; A61F13/514; A61F13/51498; A61F13/53; A61F13/534; A61F2013/51002; A61F2013/51038; A61F2013/51042; A61F2013/530131; A61F2013/530182; A61F2013/53445; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/23; Y10T428/239
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
An absorbent article comprising (1) an absorbent layer, (2) a barrier covering the lateral faces and underneath face of the absorbent layer, (3) a web placed on the top of the absorbent layer and (4) a nonwoven fabric wrapped around the absorbent layer, the barrier and the web, characterized in that said nonwoven fabric comprises, based on the weight of the nonwoven fabric, 10 to 70% by weight of a regenerated cellulose fiber, 5 to 60% by weight of a polyester fiber and 25 to 75% by weight of a heat-bondable composite polyolefin fiber, and said web is predominantly comprised of a polyester fiber.
Claim 2
Dependent Claim
104 words
An absorbent article comprising (1) an absorbent layer, (2) a barrier covering the lateral faces and underneath face of the absorbent layer, (3) a web placed on the top of the absorbent layer and (4) a nonwoven fabric wrapped around the absorbent layer, the barrier and the web, characterized in that said nonwoven fabric comprises, based on the weight of the nonwoven fabric, 10 to 70% by weight of a regenerated cellulose fiber, 5 to 60% by weight of a polyester fiber and 25 to 75% by weight of a heat-bondable composite polyolefin fiber, and said web is predominantly comprised of a polyester fiber.
Claim 3
Dependent Claim
27 words
An absorbent article according to claim 1 wherein said web is made of polyester fibers and has a basis weight of 10 to 50 g/m 2 .
Claim 4
Dependent Claim
20 words
An absorbent article according to claim 1 wherein said web has a density of 0.001 to 0.04 g/cm 3 .
Claim 5
Dependent Claim
51 words
An absorbent article according to claim 1 wherein said nonwoven fabric comprises, based on the weight of the nonwoven fabric, 30 to 60% by weight of a regenerated cellulose fiber, 5 to 40% by weight of a polyester fiber and 30 to 65% by weight of a heat-bondable polyolefin composite fiber.
Claim 6
Dependent Claim
24 words
An absorbent article according to claim 1 or 4 wherein said nonwoven fabric has a basis weight of 10 to 35 g/m 2 .
Claim 7
Dependent Claim
23 words
An absorbent article according to claim 1 or 4 wherein said nonwoven fabric has a density of 0.01 to 0.1 g/cm 3 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |