US4775579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroentangled elastic and nonelastic filaments
Assignee: Fitesa Simpsonville Inc
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Filing: 1987-11-05
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Granted: 1988-10-04
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Expires: 2007-11-05
Abstract
Abstract An elastic nonwoven fabric is made up of staple textile fibers or wood pulp, or both hydroentangled with an elastic web or net of a thermoplastic elastic polymer.
Inventors
- 👤 M. Dexter Hagy
- 👤 Jared A. Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:48
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/04; B32B5/022; B32B5/026; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/4282; D04H1/4291; D04H1/44; D04H1/46; D04H1/492; D04H1/54; D04H1/56; B32B2262/00; B32B2262/02; B32B2262/0223; B32B2262/023; B32B2262/0246; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2262/0292; B32B2307/00; B32B2307/50; B32B2307/51; B32B2535/00; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/602; Y10T442/689; Y10T442/697; Y10T442/698
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
49 words
A nonwoven elastic fabric having a basis weight in the range of 0.8 to 8 ounces per square yard comprising 15 to 80 weight percent of an elastic synthetic polymer web or net and 20 to 85 weight percent absorbent staple fibers hydraulically entangled in the elastic polymer web.
Claim 2
Dependent Claim
49 words
A nonwoven elastic fabric having a basis weight in the range of 0.8 to 8 ounces per square yard comprising 15 to 80 weight percent of an elastic synthetic polymer web or net and 20 to 85 weight percent absorbent staple fibers hydraulically entangled in the elastic polymer web.
Claim 3
Dependent Claim
34 words
A nonwoven elastic fabric comprising 15 to 80 weight percent elastic polymer web or net entangled with 20 to 85 weight percent of water laid fibers comprising wood pulp and staple length textile fibers.
Claim 4
Dependent Claim
34 words
A nonwoven elastic fabric comprising 15 to 80 weight percent elastic polymer web or net entangled with 20 to 85 weight percent of water laid fibers comprising wood pulp and staple length textile fibers.
Claim 5
Dependent Claim
35 words
A nonwoven elastic fabric according to claim 1 wherein said elastic polymer is selected from the group consisting of ethylene-polybutylene copolymers, poly(ethylene-butylene) polystyrene block copolymers, polyadipate esters, polyurethanes, polyester elastomeric polymers, and polyamide elastic polymers.
Claim 6
Dependent Claim
57 words
A nonwoven elastic fabric comprising an elastic polymer web or net containing from about 20 to about 85 weight percent of paper pulp and staple textile fibers wherein the relative proportions of pulp to staple length fibers is within the range of 55 to 75 weight percent pulp and 25 to 45 weight percent staple length fibers.
Claim 7
Dependent Claim
57 words
A nonwoven elastic fabric comprising an elastic polymer web or net containing from about 20 to about 85 weight percent of paper pulp and staple textile fibers wherein the relative proportions of pulp to staple length fibers is within the range of 55 to 75 weight percent pulp and 25 to 45 weight percent staple length fibers.
Claim 8
Dependent Claim
36 words
A nonwoven fabric according to claim 4 wherein the staple length fibers have a diameter within the range of one to three denier and a length in the range of one quarter inch to 2 inches.
Claim 9
Dependent Claim
26 words
A nonwoven fabric according to claim 4 wherein the weight of the elastic web is in the range of 0.5 to 6 ounces per square yard.
Claim 10
Dependent Claim
17 words
A nonwoven fabric according to claim 4 wherein the elastic polymer is a polyurethane polyester block copolymer.
Claim 11
Dependent Claim
38 words
A nonwoven fabric according to claim 4 wherein the fibrous components of the elastic web are bonded, the bonded area being in the range of from about 5 to 15 percent of the total area of the web.
Claim 12
Dependent Claim
16 words
A nonwoven fabric according to claim 5 wherein the staple length fibers are reconstituted cellulose fibers.
Claim 13
Independent Claim
57 words
A method of producing a nonwoven elastic fabric which comprises forming a web or net of elastic polymer fibers, forming a nonelastic web of staple length textile fibers and wood pulp, laying the webs into contact with one another and hydroentangling the fibers of the nonelastic web and the web or net to form an elastic fabric.
Claim 14
Independent Claim
57 words
A method of producing a nonwoven elastic fabric which comprises forming a web or net of elastic polymer fibers, forming a nonelastic web of staple length textile fibers and wood pulp, laying the webs into contact with one another and hydroentangling the fibers of the nonelastic web and the web or net to form an elastic fabric.
Claim 15
Dependent Claim
23 words
A method according to claim 10 wherein the fibers of the nonelastic web comprise 20 to 85 weight percent of the elastic fabric.
Claim 16
Dependent Claim
16 words
A method according to claim 10 wherein said elastic web is stretched within its elastic limits.
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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |