US4054025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of filament yarns with statistically distributed, broken individual filaments
Assignee: Bayer AG
•
Filing: 1976-07-20
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Granted: 1977-10-18
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Expires: 1996-07-20
Abstract
Abstract The invention relates to the production of yarns with individual filaments broken in a purely random sequence. This object is achieved by initially interlacing the uniform filament yarns either during spinning and before winding or between the winding bobbin and the drawing zone and subsequently subjecting parts of the outer layers of the interlaced filament strand to brief heat treatment on a contact heater before stretching.
Inventors
- 👤 Harry Kubitzek
- 👤 Wolfgang Liedtke
- 👤 Herbert Pelousek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:01
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/168; Y; Y10; Y10S; Y10S57/00; Y10S57/908
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A process for the production of filament yarns with projecting ends of broken individual filaments which comprises first interlacing filament yarns which have been partially but not fully drawn and subsequently subjecting said filament yarns to partial thermal overstressing on a contact heater and, finally, fully drawing of said filament yarns.
Claim 2
Dependent Claim
51 words
A process for the production of filament yarns with projecting ends of broken individual filaments which comprises first interlacing filament yarns which have been partially but not fully drawn and subsequently subjecting said filament yarns to partial thermal overstressing on a contact heater and, finally, fully drawing of said filament yarns.
Claim 3
Dependent Claim
28 words
The process for the production of filament yarns with projecting ends and loops of broken individual filaments according to claim 1 wherein the filament yarns are additionally interlaced.
Claim 4
Dependent Claim
47 words
The process for the production of filament yarns with projecting ends of broken individual filaments according to claim 1 wherein filament yarns which have not been fully drawn are first interlaced, subsequently subjected to partial thermal overstressing on a contact heater and, finally, are subjected to draw-texturing.
Claim 5
Dependent Claim
28 words
The process for the production of filament yarns with projecting ends and loops of broken individual filaments according to claim 3 wherein the filament yarns are additionally interlaced.
Claim 6
Dependent Claim
17 words
Filament yarns with projecting ends of broken individual filaments produced by the process claimed in claim 1.
References Cited (Backward Citations)
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US3061998A
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US3114999A
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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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |