US3596458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spun yarn of elastic fiber and preparation thereof
Assignee: Asahi Kasei Corp
•
Filing: 1967-02-24
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Granted: 1971-08-03
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Expires: 1987-02-24
Abstract
Abstract A spun yarn of a 100 percent elastic fiber or of an elastic fiber blended with a hard fiber. The yarn is prepared by stretching and heat setting a multifilament yarn or tow of the elastic fiber, stretch breaking, drawing, if necessary, and twisting. The blended yarn is prepared by, after the stretch breaking of the basic elastic fibers and before the drawing, blending with hard fiber roving. The yarn is prepared by employing a modified direct spinning machine equipped with top and bottom aprons in a stretch breaking zone between the back roll and the intermediate roll; the aprons being driven by the revolution of the intermediate roll.
Inventors
- 👤 Hiroshi Nakano
- 👤 Hideo Takai
- 👤 Fumio Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:19
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/324; D01; D01H; D01H1/00; D02G3/328; D01H2700/00; D01H2700/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
26 words
A method according to claim 1 wherein the mixed state to which the spun yarn is converted is in the form of a core spun yarn.
Claim 2
Dependent Claim
25 words
A method according to claim 1 wherein the mixed state to which the spun yarn is converted is in the form of a covered yarn.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein the mixed state to which the spun yarn is converted is in the form of a fabric.
Claim 4
Independent Claim
128 words
A method of producing an elastic, bulky blended spun yarn of elastic staple fiber and hard fiber, said method comprising stretching and heat setting a tow of 100 percent elastic filaments, stretch breaking the stretched and heat-set tow, blending same with a hard fiber roving, drawing the thus blended materials, directly spinning same to a spun yarn, mixing said spun yarn with other with additional textile materials to convert same to a mixed state, and then subjecting the said spun yarn in a low-tensioned state to free relaxation by treatment with a member selected from the group consisting of steam and boiling water to thereby impart to the said blended spun yarn excellent elasticity and high bulkiness resulting from the shrinking of the elastic fiber during the relaxation.
Claim 5
Dependent Claim
26 words
A method according to claim 5 wherein the mixed state to which the spun yarn is converted is in the form of a core spun yarn.
Claim 6
Dependent Claim
25 words
A method according to claim 5 wherein the mixed state to which the spun yarn is converted is in the form of a covered yarn.
Claim 7
Dependent Claim
24 words
A method according to claim 5 wherein the mixed state to which the spun yarn is converted is in the form of a fabric.
Claim 8
Independent Claim
64 words
A method of producing a spun yarn consisting of 100 percent of an elastic staple fiber, said method comprising preliminarily stretching and temporarily heat setting a tow of 100 percent elastic filaments, stretch breaking the stretched and heat-set tow, drawing the resulting elastic staple fiber, directly spinning the elastic staple fiber to a spuN yarn and subjecting said spun yarn to a post treatment.
Claim 9
Dependent Claim
62 words
A method according to claim 9 wherein said post treatment comprises subjecting the said spun yarn in a low-tensioned state to free relaxation by treatment with a member selected from the group consisting of steam and boiling water to thereby impart to the said spun yarn excellent elasticity and high bulkiness resulting from the shrinking of the elastic fiber during the relaxation.
Claim 10
Dependent Claim
39 words
A method according to claim 10 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a core spun yarn before subjecting same to said free relaxation.
Claim 11
Dependent Claim
38 words
A method according to claim 10 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a covered yarn before subjecting same to said free relaxation.
Claim 12
Dependent Claim
37 words
A method according to claim 10 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a fabric before subjecting same to said free relaxation.
Claim 13
Independent Claim
59 words
A method of producing an elastic, bulky blended spun yarn of elastic staple fiber and hard fiber, said method comprising stretching and heat setting a tow of 100 percent elastic filaments, stretch breaking the stretched and heat -set tow, blending same with a hard fiber roving, drawing the thus blended materials and directly spinning same to a spun yarn.
Claim 14
Dependent Claim
100 words
A method according to claim 14 further comprising subjecting the said spun yarn in a low-tensioned state to free relaxation by treatment with a member selected from the group consisting of steam and boiling water to thereby impart to the said blended spun yarn excellent elasticity and high bulkiness resulting from the shrinking of the elastic fiber during the relaxation. 16 A method according to claim 15 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a core spun yarn before subjecting same to said free relaxation.
Claim 15
Dependent Claim
38 words
A method according to claim 15 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a covered yarn before subjecting same to said free relaxation.
Claim 16
Dependent Claim
37 words
A method according to claim 15 and further comprising mixing said spun yarn with additional textile materials to convert same to a mixed state in the form of a fabric before subjecting same to said free relaxation.
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |