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US4292799A
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Spun yarn-like textured yarns and process for producing same
Assignee: Toray Industries Inc
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Filing: 1979-10-17
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Granted: 1981-10-06
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Expires: 1999-10-17
Abstract
Abstract Spun yarn-like textured polyester yarns comprised of two types of polyester multifilament component yarns and having broken filaments, in which textured yarns there is a difference in length between the component yarns, whereby high bulkiness is imparted thereto. The individual filaments of one of the component yarns have a fineness less than those of the other component yarn. The spun yarn-like textured yarns have satisfactory pilling resistance and frosting resistance. The spun yarn-like high bulky textured yarns can be produced by a process comprising doubling two types of undrawn polyester multifilament yarns having different properties through an intertwisting regulative device and simultaneously draw-texturing the doubled undrawn yarns.
Inventors
- 👤 Yukio Otaki
- 👤 Kazuo Umeda
- 👤 Kiyoshi Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:52
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0246; D02G1/0286; Y; Y10; Y10S; Y10S57/00; Y10S57/908
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A spun yarn-like textured yarn comprised of two types of polyester multifilament component yarns A and B, the difference in monofilament denier Δ[d] B-A of the component yarn B from the component yarn A being not less than 1.8 denier, the monofilament denier of the component yarn A being not more than 1.6 denier, and the textured yarn having a broken filament count of not more than 40 per meter of its length, a crimp stretchability of not more than 23%, a difference in length between the component yarns A and B of not less than 1% and a bulk factor of not less than 9 cc/g.
Claim 2
Dependent Claim
107 words
A spun yarn-like textured yarn comprised of two types of polyester multifilament component yarns A and B, the difference in monofilament denier Δ[d] B-A of the component yarn B from the component yarn A being not less than 1.8 denier, the monofilament denier of the component yarn A being not more than 1.6 denier, and the textured yarn having a broken filament count of not more than 40 per meter of its length, a crimp stretchability of not more than 23%, a difference in length between the component yarns A and B of not less than 1% and a bulk factor of not less than 9 cc/g.
Claim 3
Dependent Claim
23 words
A textured yarn according to claim 1, wherein the broken filament count is in a range of from 3 to 25 per meter.
Claim 4
Dependent Claim
20 words
A textured yarn according to claim 1, wherein the crimp stretchability is in a range of from 15 to 22%.
Claim 5
Dependent Claim
21 words
A textured yarn according to claim 1, wherein the difference in length is in a range of from 3 to 12%.
Claim 6
Dependent Claim
21 words
A textured yarn according to claim 1, wherein the bulk factor is in a range of from 9 to 18 cc/g.
Claim 7
Dependent Claim
15 words
A textured yarn according to claim 1, wherein the textured yarn is made substantially coherent.
Claim 8
Dependent Claim
30 words
A textured yarn according to claim 1, 2, 3, 4, 5 or 6, wherein at least the component yarn B is made of filaments having a tri-lobal to octo-lobal cross-section.
Claim 9
Dependent Claim
202 words
A process for producing a spun yarn-like textured yarn as defined in claim 1, which comprises: passing two types of undrawn polyester multifilament yarns A and B, the difference in NDR Δ[NDR] A-B of the undrawn yarn A from the undrawn yarn B being not less than 2% or not more than -2%, the monofilament denier of the undrawn yarn A being small enough to be drawn to a monofilament denier of not more than 1.6 denier, the monofilament denier of the undrawn yarn B being greater than the monofilament denier of the undrawn yarn A, separately through a feed roller; simultaneously draw-texturing the undrawn yarns A and B together while doubling them with substantially identical intertwisting angles immediately after passing through an intertwisting regulative device provided between the feed roller and a heater for fixing the twists, whereby the difference in monofilament denier Δ[d] B-A of the yarn B from the yarn A is made not less than 1.8 denier, the monofilament denier of the yarn A is made not more than 1.6 denier and some of the individual filaments of the yarn A are partially cut to produce broken filaments, and; taking up the draw-textured yarns A and B together.
Claim 10
Dependent Claim
23 words
A process according to claim 8, wherein at least the undrawn yarn B is made of filaments having a tri-lobal to octa-lobal cross-section.
Claim 11
Dependent Claim
22 words
A process according to claim 8 or 9, wherein substantial coherence is imparted to the draw-textured yarns before they are taken up.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |