US4356690A
Expired / Lapsed
US
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Fasciated yarn
Assignee: Toray Industries Inc
•
Filing: 1979-03-26
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Granted: 1982-11-02
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Expires: 1999-03-26
Abstract
Abstract Fasciated yarn having uniform yarn construction and high strength, comprising a staple fiber group having a special staple assortment for making such a fasciated yarn.
Inventors
- 👤 Koichi Minorikawa
- 👤 Shinichi Kitazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D01; D01H; D01H1/00; D01H1/11; D01H5/00; D02G3/22; D02G3/38; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
77 words
A fasciated yarn which comprises a core portion comprising a substantially non-twisted stable fiber bundle and wrapped staple fibers disposed around said core portion, wherein said fasciated yarn is composed of staple fibers having an average fiber length of l, characterized by the fact that more than about 15% of said fibers have a fiber length less than 0.5 l, and that more than about 15% of said fibers have a fiber length greater than 1.5 l.
Claim 2
Dependent Claim
77 words
A fasciated yarn which comprises a core portion comprising a substantially non-twisted stable fiber bundle and wrapped staple fibers disposed around said core portion, wherein said fasciated yarn is composed of staple fibers having an average fiber length of l, characterized by the fact that more than about 15% of said fibers have a fiber length less than 0.5 l, and that more than about 15% of said fibers have a fiber length greater than 1.5 l.
Claim 3
Dependent Claim
43 words
A fasciated yarn according to claim 1, wherein the fibers having a fiber length greater than 1.5×l, are mainly disposed in the core portion and the fibers having a fiber length less than 0.5 l are mainly disposed in the wrapped staple fibers.
Claim 4
Dependent Claim
48 words
A fasciated yarn according to claim 1, wherein the fibers having fiber lengths greater than 1.5 l and the fibers having a fiber length less than 0.5 l are produced by amendatory draft cutting a draft cut synthetic fibrous sliver having a sliver I factor less than 4.0.
Claim 5
Dependent Claim
16 words
A fasciated yarn according to claim 1, having a yarn I factor less than about 1.7.
Claim 6
Dependent Claim
26 words
A high strength fasciated yarn according to claim 1, which is composed of fibers having an average tensile strength more than about 7.0 gram per denier.
Claim 7
Dependent Claim
17 words
A fasciated yarn according to claim 1, 2 or 3, which is composed of polyethylene terephthalate fibers.
Claim 8
Dependent Claim
16 words
A fasciated yarn according to claim 1, 2 or 3, which is composed of polyamide fibers.
Claim 9
Dependent Claim
56 words
Draft cut sliver wherein l designates the average fiber length of the fibers of the draft cut sliver and wherein more than 15% of the fibers of said sliver have a fiber length more than 1.5 l, and wherein more than 15% of the fibers of said sliver have a fiber length less than 0.5 l.
Claim 10
Dependent Claim
56 words
Draft cut sliver wherein l designates the average fiber length of the fibers of the draft cut sliver and wherein more than 15% of the fibers of said sliver have a fiber length more than 1.5 l, and wherein more than 15% of the fibers of said sliver have a fiber length less than 0.5 l.
Claim 11
Dependent Claim
43 words
Draft cut sliver as defined in claim 8, having a sliver I factor below 4.0, wherein said sliver I factor is ##EQU3## where U is the Uster percentage unevenness and q is the number of fibers at the cross section of the sliver.
Claim 12
Dependent Claim
14 words
Draft cut sliver as defined in claim 8, wherein l is about 50-500 mm.
Claim 13
Dependent Claim
45 words
Draft cut sliver as defined in claim 8, having a sliver I factor less than about 3.0, wherein said sliver I factor is ##EQU4## where U is the Ulster percentage unevenness and q is the number of fibers at the cross section of the sliver.
Claim 14
Dependent Claim
36 words
Draft cut sliver as defined in claim 8, wherein about 15-25% of the fibers of the sliver have lengths greater than 1.5×l, and about 15-20% of the fibers of the sliver have lengths less than 0.5×l.
Claim 15
Dependent Claim
32 words
Draft cut sliver as defined in claim 8, drawn by amendatory draft cutting at about 0.4 to 0.9 times of a drafting zone length just upstream of said amendatory draft cutting step.
Claim 16
Dependent Claim
32 words
Draft cut sliver as defined in claim 8, drawn at a maximum draft ratio of 0.85-0.95 times of ##EQU5## where E is the elongation in the fiber strain zone under constant stress.
Claim 17
Dependent Claim
73 words
Draft cut sliver as defined in claim 8, having a sliver strength greater than 7.0 g/d, drawn under the conditions: 0.90 d 1 /d 1 (max) and 0.85 dt/dt (max) where "d 1 " means the first draw ratio, "d 1 (max)" means the maximum first draw ratio, "dt" means the product of first and second draw ratios and "dt(max)" means the product of maximum draw ratios of the first and second stages.
Claim 18
Dependent Claim
14 words
The draft cut sliver as defined in claim 15, wherein 0.83 dt/dt (max) 0.95.
Claim 19
Dependent Claim
22 words
The draft cut sliver as defined in claim 15, wherein 0.80 d 1 /d 1 (max) 0.99, and 0.65 dt/dt (max) 0.95.
Claim 20
Dependent Claim
22 words
The draft cut sliver as defined in claim 15, wherein 0.90 d 1 /d 1 (max) 0.99, and 0.85 dt/dt (max) 0.95.
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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) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |