US4025595A
Expired / Lapsed
US
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Process for preparing mixed filament yarns
Assignee: EIDP Inc
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Filing: 1975-10-15
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Granted: 1977-05-24
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Expires: 1995-10-15
Abstract
Abstract Continuous, mixed filament yarns are provided as well as a process for preparing them in which at least two different continuous filament yarns are cospun and separately entangled; the entangled yarns are consolidated and drawn to yield from 0.5-6 entanglements/meter in the consolidated yarn after drawing, and the drawn yarn is intermingled to yield a product yarn having a degree of filament intermingling of 45-80%, a denier of 70-260 and 20-68 filaments.
Inventors
- 👤 Michael E. Mirhej
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:14
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/12; D01F; D01F6/00; D01F6/58; D01F6/62; D02; D02G; D02G1/00; D02G1/16; D02G1/165
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
63 words
A process for preparing continuous, mixed filament yarns having 20-68 filaments and a denier of 70-260 which comprises cospinning at least two different bundles of continuous filaments, separately entangling each bundle, consolidating the entangled bundles and drawing them together to yield from about 0.5-6 entanglements/meter after drawing, and then intermingling the drawn yarn to a degree of filament intermingling of about 45- 80%.
Claim 2
Dependent Claim
63 words
A process for preparing continuous, mixed filament yarns having 20-68 filaments and a denier of 70-260 which comprises cospinning at least two different bundles of continuous filaments, separately entangling each bundle, consolidating the entangled bundles and drawing them together to yield from about 0.5-6 entanglements/meter after drawing, and then intermingling the drawn yarn to a degree of filament intermingling of about 45- 80%.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the yarn has about 34 filaments.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the yarn has a denier of 150.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the cospun filaments have non-round cross-sections.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the bundles are entangled with an interlacing jet.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein the jet is operated at a pressure of 15-60 psi.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the drawn yarn is intermingled with an interlacing jet.
Claim 9
Dependent Claim
16 words
The process of claim 7 wherein the jet is operated at a pressure of 10-40 psi.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein the yarn is drawn 2.8-3.8X.
Claim 11
Dependent Claim
24 words
The process of claim 9 wherein the consolidated bundles are drawn in a steam jet operated at a steam pressure of 70- 85 psi.
Claim 12
Dependent Claim
15 words
The process of claim 1 wherein the yarn is cospun from a poly(ethylene terephthalate) polymer.
Claim 13
Dependent Claim
20 words
The process of claim 1 wherein the yarn is cospun from a poly(ethylene terephthalate) and a poly[ethylene terephthalate/(5-sodium sulfo)isophthalate] polymer.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |