US4486485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven textile structures with reversible stretch
Assignee: Burlington Industries Inc
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Filing: 1983-08-24
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Granted: 1984-12-04
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Expires: 2003-08-24
Abstract
Abstract A nonwoven textile structure which exhibits improved stretch/recovery characteristics comprises a blend of staple fibers having a first component of crimped nonelastic fibers and a second component of quasi-elastic fibers, the crimped and quasi-elastic fibers being bonded together at predetermined intervals less than the staple fiber length and greater than the crimp length.
Inventors
- 👤 Arnold M. Sookne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:53
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/42; D04H1/4282; D04H1/43; D04H1/4326; D04H1/4334; D04H1/435; D04H1/4382; D04H1/43835; D04H1/4391; D04H1/43918; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/608; Y10T442/627; Y10T442/635; Y10T442/636
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
74 words
A nonwoven textile structure which exhibits improved stretch/recovery characteristics, said structure comprising a blend of staple fibers having a predetermined minimum staple fiber length and including a first component of nonelastic crimped fibers having a predetermined crimp length and a second component of quasi-elastic fibers, said crimped and quasi-elastic fibers being bonded together at intervals less than said minimum staple fiber length but greater than said crimp length, said quasi-elastic fibers being substantially uncrimped.
Claim 2
Dependent Claim
74 words
A nonwoven textile structure which exhibits improved stretch/recovery characteristics, said structure comprising a blend of staple fibers having a predetermined minimum staple fiber length and including a first component of nonelastic crimped fibers having a predetermined crimp length and a second component of quasi-elastic fibers, said crimped and quasi-elastic fibers being bonded together at intervals less than said minimum staple fiber length but greater than said crimp length, said quasi-elastic fibers being substantially uncrimped.
Claim 3
Dependent Claim
26 words
A nonwoven textile structure as in claim 1 wherein said crimped fibers are selected from the group consisting of nylon, polypropylene and polyethylene terephthalate staple fibers.
Claim 4
Dependent Claim
26 words
A nonwoven textile structure as in claim 2 wherein said quasi-elastic fibers are selected from the group consisting of SEF modacrylic and polymethylene terephthalate staple fibers.
Claim 5
Dependent Claim
18 words
A nonwoven textile structure as in claim 1 wherein the crimp length is less than about 0.10 inches.
Claim 6
Dependent Claim
21 words
A nonwoven textile structure as in claim 1 wherein the crimp length is between about 0.05 inches and about 0.10 inches.
Claim 7
Dependent Claim
19 words
A nonwoven textile structure as in claim 1 wherein said second component comprises at least 30% of said blend.
Claim 8
Dependent Claim
18 words
A nonwoven textile structure as in claim 1 wherein said staple fiber length is at least 1 inch.
Claim 9
Dependent Claim
21 words
A nonwoven structure as in claim 1 wherein said staple fiber length is between about 1 inch and about 17/8 inches.
Claim 10
Dependent Claim
17 words
A nonwoven textile structure as in claim 1 wherein said staple fiber length is about 11/2 inches.
Claim 11
Independent Claim
96 words
A method of producing a nonwoven textile structure having improved stretch recovery characteristics, said method comprising the steps of: (a) blending a first component of staple nonelastic crimped fibers having a predetermined crimp length and a second component of staple substantially straight quasi-elastic fibers to form a nonwoven batt, the first and second components having a minimum predetermined staple fiber length; and (b) bonding the fibers of the first and second components comprising the batt formed according to step (a) at predetermined intervals less than said minimum staple fiber length and greater than said crimp length.
Claim 12
Independent Claim
96 words
A method of producing a nonwoven textile structure having improved stretch recovery characteristics, said method comprising the steps of: (a) blending a first component of staple nonelastic crimped fibers having a predetermined crimp length and a second component of staple substantially straight quasi-elastic fibers to form a nonwoven batt, the first and second components having a minimum predetermined staple fiber length; and (b) bonding the fibers of the first and second components comprising the batt formed according to step (a) at predetermined intervals less than said minimum staple fiber length and greater than said crimp length.
Claim 13
Dependent Claim
15 words
A method as in claim 10 wherein step (b) is practiced utilizing ultrasonic bonding means.
Claim 14
Dependent Claim
28 words
A method as in claim 10 wherein said first component fibers are at least one selected from the group consisting of nylon, polypropylene and polyethylene terephthalate staple fibers.
Claim 15
Dependent Claim
28 words
A method as in claim 12 wherein said second component fibers are at least one selected from the group consisting of SEF modacrylic and polymethylene terephthalate staple fibers.
Claim 16
Dependent Claim
17 words
A method as in claim 10 wherein said second component comprises at least 30% of said batt.
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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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |