US4483897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven fabric
Assignee: JNC Corp
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Filing: 1984-04-23
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Granted: 1984-11-20
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Expires: 2004-04-23
Abstract
Abstract Non-woven fabrics having light weight, high strength, soft hand and not having any waxy feeling is provided by subjecting fiber admixture to heat treatment, which fiber admixture is composed of foamed fiber, heat adhesive fiber and other kinds of fibers if necessary.
Inventors
- 👤 Isao Fujimura
- 👤 Sadaaki Nakajima
- 👤 Morio Abe
- 👤 Masahiko Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:24
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/42; D04H1/4282; D04H1/4291; D04H1/4326; D04H1/435; D04H1/4382; D04H1/43825; D04H1/43828; D04H1/43832; D04H1/43835; D04H1/4391; D04H1/43916; D04H1/43838; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T442/00; Y10T442/60; Y10T442/637; Y10T442/638; Y10T442/641; Y10T442/647; Y10T442/652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A non-woven fabric having a weight of 10˜50 g/m 2 , and the structure of said non-woven fabric is stabilized by adhesion of heat adhesive fibers, characterized by the composition consisting of at least 30 wt. % of foamed fibers made of polypropylene or polyester having a single fiber fineness of 0.5˜6 deniers, at least 20 wt. % of heat adhesive fibers and balance of other kinds of fibers, wherein the foamed fiber is any of conjugate fiber of sheath-core type or side-by-side type and only sheath component in the case of sheath-core type conjugate fiber or only a component dominantly forming the fiber surface along the direction of fiber axis in the case of side-by-side conjugate fiber substantially contains foamed cells and a part of the foamed cells are bursted out the fiber surface.
Claim 2
Dependent Claim
135 words
A non-woven fabric having a weight of 10˜50 g/m 2 , and the structure of said non-woven fabric is stabilized by adhesion of heat adhesive fibers, characterized by the composition consisting of at least 30 wt. % of foamed fibers made of polypropylene or polyester having a single fiber fineness of 0.5˜6 deniers, at least 20 wt. % of heat adhesive fibers and balance of other kinds of fibers, wherein the foamed fiber is any of conjugate fiber of sheath-core type or side-by-side type and only sheath component in the case of sheath-core type conjugate fiber or only a component dominantly forming the fiber surface along the direction of fiber axis in the case of side-by-side conjugate fiber substantially contains foamed cells and a part of the foamed cells are bursted out the fiber surface.
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |