US3857233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voluminous filament yarn and process to prepare same
Assignee: Hoechst AG
•
Filing: 1973-07-10
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Granted: 1974-12-31
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Expires: 1993-07-10
Abstract
Abstract Object of the invention is a process for preparing a voluminous filament yarn with several loose filament ends sticking out by means of false twist texturization, optionally combined with a drawing process including the use of filaments having-at least partially-a flex abrasion resistance of less than abt. 1500 revolutions, said filament yarns being fed into known false twist texturizing devices and texturized therein, whereby the filaments having flex abrasion resistance values of less than abt. 1500 revolutions break in irregular intervals due to the transversal stress applied within the texturization area, the thus obtained loose filament ends sticking out being interlaced, at least temporarily, by a process for ameliorating filament bonding as well as the voluminous filament yarns produced accordingly. The process allows of the trouble-free preparation of filament yarns being optionally texturized, having several loose filament ends sticking out, which excel in the uniformity of their characteristics all over the yarn length and which may be worked up to fabrics having an extremely low tendency to pilling.
Inventors
- 👤 J Cardinal
- 👤 K Heinrich
- 👤 G Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:14
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: 10
Claim 1
Independent Claim
93 words
PROCESS FOR PREPARING A VOLUMINOUS FILAMENT YARN WITH SEVERAL LOOSE FILAMENT ENDS STICKING OUT BY MEANS OF FALSE TWIST TEXURIZATION INCLUDING THE USE OF FILAMENTS HAVING - AT LEAST PARTIALLY-A FLEX ABRASION RESISTANCE OF LESS THAN ABOUT 1,500 CYCLES, SAID FILAMENT YARNS BEING FED INTO KNOWN FALSE TWIST TEXTURIZING DEVICES AND TEXURIZED THEREIN, WHEREBY THE FILAMENTS HAVING FLEX ABRASION RESISTANCE VALUES OF LESS THAN ABOUT 1,500 CYCLES BREAK IN IRREGULAR INTERVALS DUE TO THE TRANSVERSAL STRESS APPLIED WITHIN THE TEXURIZATION AREA, INTERLACING THE THUS OBTAINED LOOSE FILAMENT ENDS STICKING OUT, AS LEAST TEMPORARILY.
Claim 2
Dependent Claim
93 words
PROCESS FOR PREPARING A VOLUMINOUS FILAMENT YARN WITH SEVERAL LOOSE FILAMENT ENDS STICKING OUT BY MEANS OF FALSE TWIST TEXURIZATION INCLUDING THE USE OF FILAMENTS HAVING - AT LEAST PARTIALLY-A FLEX ABRASION RESISTANCE OF LESS THAN ABOUT 1,500 CYCLES, SAID FILAMENT YARNS BEING FED INTO KNOWN FALSE TWIST TEXTURIZING DEVICES AND TEXURIZED THEREIN, WHEREBY THE FILAMENTS HAVING FLEX ABRASION RESISTANCE VALUES OF LESS THAN ABOUT 1,500 CYCLES BREAK IN IRREGULAR INTERVALS DUE TO THE TRANSVERSAL STRESS APPLIED WITHIN THE TEXURIZATION AREA, INTERLACING THE THUS OBTAINED LOOSE FILAMENT ENDS STICKING OUT, AS LEAST TEMPORARILY.
Claim 3
Dependent Claim
23 words
process according to claim 1, wherein the filament yarns used consist - at least partially - of filaments made of thread-forming synthetic highpolymers.
Claim 4
Dependent Claim
24 words
Process according to claim 1, wherein at least part of the filaments used have a flex abrasion resistance of less than about 1,000 cycles.
Claim 5
Dependent Claim
24 words
Process according to claim 1, wherein at least part of the filaments used have a flex abrasion resistance of less than about 500 cycles.
Claim 6
Dependent Claim
15 words
Process according to claim 1, wherein the filament yarns used consist of thread-forming highmolecular polyesters.
Claim 7
Dependent Claim
36 words
Process according to claim 1, wherein the filament yarns used consist of unstretched or partially stretched filament yarns, being composed of thread-forming synthetic high-polymers and wherein these filament yarns are simultaneously stretched and false twist texturized.
Claim 8
Dependent Claim
19 words
Process according to claim 1, wherein the false twist texturization is performed by means of a false twist spindle.
Claim 9
Dependent Claim
105 words
Process for preparing a voluminous filament yarn with several loose filament ends sticking out by means of a drawing process carried out prior to or simultaneously with false twist texturization, including the use of filaments having - at least partially - a flex abrasion resistance of less than about 1,500 cycles, said filament yarns being fed into known false twist texturizing devices and texturized therein, whereby the filaments having flex abrasion resistance values of less than about 1,500 cycles break in irregular intervals due to the transversal stress applied withiN the texturization area, interlacing the thus obtained loose filament ends sticking out, at least temporarily.
Claim 10
Dependent Claim
105 words
Process for preparing a voluminous filament yarn with several loose filament ends sticking out by means of a drawing process carried out prior to or simultaneously with false twist texturization, including the use of filaments having - at least partially - a flex abrasion resistance of less than about 1,500 cycles, said filament yarns being fed into known false twist texturizing devices and texturized therein, whereby the filaments having flex abrasion resistance values of less than about 1,500 cycles break in irregular intervals due to the transversal stress applied withiN the texturization area, interlacing the thus obtained loose filament ends sticking out, at least temporarily.
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |