US4532173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibre-implanted nonwoven fabric
Assignee: Unicharm Corp
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Filing: 1983-01-25
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Granted: 1985-07-30
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Expires: 2003-01-25
Abstract
Abstract Here are disclosed a nonwoven fabric comprising short fibres implanted from the surface(s) of a stretchably elastic foamed sheet deeply into the interior thereof wherein said short fibres are not only mutually entangled on said surface but also being interlocked with material of said foamed sheet on said surface as well as in the interior thereof; and a method for production of such nonwoven fabric by accomplishing implantation of said short fibres into said foamed sheet under high energy treatment with high velocity water streams (FIG. 4).
Inventors
- 👤 Migaku Suzuki
- 👤 Toshio Kobayashi
- 👤 Satoshi Sasaki
- 👤 Shigeo Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:00
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/06; B32B5/022; B32B5/08; B32B5/18; B32B5/22; B32B5/24; B32B5/245; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/492; D04H1/495; B32B2255/00; B32B2255/02; B32B2255/26; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/02; B32B2262/0223; B32B2262/0238; B32B2262/0246; B32B2262/0253; B32B2262/0261; B32B2262/0292; B32B2262/04; B32B2262/06; B32B2262/062; B32B2262/065; B32B2262/08; B32B2262/14; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2266/06; B32B2307/00; B32B2307/50; B32B2307/51; B32B2307/54; B32B2307/70; B32B2307/718; B32B2307/724; B32B2307/726; B32B2307/7265; B32B2437/00; B32B2535/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
Fibre-implanted nonwoven fabric comprising a stretchably elastic foamed sheet of open pore type having a thickness less than 5 mm and short fibres of which the fibre length is shorter than 100 mm and the basic weight is between 5 and 80 g/m 2 , wherein said short fibres are implanted from at least one surface of said foamed sheet deeply into the interior thereof in a striped pattern defined by alternately arranged zones of high density and low density and wherein said short fibres are not only mutually entangled on said surface but also are interlocked with material of said foamed sheet on said surface as well as in the interior of said foamed sheet.
Claim 2
Dependent Claim
116 words
Fibre-implanted nonwoven fabric comprising a stretchably elastic foamed sheet of open pore type having a thickness less than 5 mm and short fibres of which the fibre length is shorter than 100 mm and the basic weight is between 5 and 80 g/m 2 , wherein said short fibres are implanted from at least one surface of said foamed sheet deeply into the interior thereof in a striped pattern defined by alternately arranged zones of high density and low density and wherein said short fibres are not only mutually entangled on said surface but also are interlocked with material of said foamed sheet on said surface as well as in the interior of said foamed sheet.
Claim 3
Dependent Claim
22 words
Fibre-implanted nonwoven fabric according to claim 1, wherein the foamed sheet is selected from those of polyurethane type and of cellulose type.
Claim 4
Dependent Claim
32 words
Fibre-implanted nonwoven fabric according to claim 1, wherein, as the short fibres, natural fibres, regenerated fibres, semi-synthetic fibres or synthetic fibres are used independently or in the form of a mixture thereof.
Claim 5
Dependent Claim
23 words
Fibre-implanted nonwoven fabric according to claim 1, wherein the surface and the interior of the nonwoven fabric are subjected to water repellent treatment.
Claim 6
Dependent Claim
32 words
Fibre-implanted nonwoven fabric according to claim 2 wherein as the short fibres, natural fibres, regenerated fibres, semi-synthetic fibres or synthetic fibres are used independently or in the form of a mixture thereof.
Claim 7
Dependent Claim
23 words
Fibre-implanted nonwoven fabric according to claim 2 wherein the surface and the interior of the nonwoven fabric are subjected to water repellent treatment.
Claim 8
Dependent Claim
23 words
Fibre-implanted nonwoven fabric according to claim 3 wherein the surface and the interior of the nonwoven fabric are subjected to water repellent treatment.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |