US3787261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for texturizing fibers obtained by splitting synthetic foils and products made therefrom
Assignee: Textilkombinat VEB
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Filing: 1972-01-27
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Granted: 1974-01-22
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Expires: 1992-01-27
Abstract
Abstract Fibers obtained by splitting synthetic foils and the resulting products are texturized by subjecting the foil or the fibers obtained after splitting and prior to their separation to a cross-sectionally differential modifying action, and thereafter contacting the modified foil or fibers with a shrinking agent, or subjecting the foil or fibers to stretching.
Inventors
- 👤 A Heger
- 👤 H Passler
- 👤 E Patitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:02
CPC Classifications
D; D02; D02G; D02G1/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
17 words
A process as defined in claim 1, wherein said foil or fibers are composed of a polyolefin.
Claim 2
Dependent Claim
29 words
A process as defined in claim 1, and further comprising the step of subjecting said foil or fibers to unidirectional stretching prior to the step of irradiating the same.
Claim 3
Dependent Claim
25 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential crosslinking during said process.
Claim 4
Dependent Claim
25 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential degradation during said process.
Claim 5
Dependent Claim
25 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential grafting during said process.
Claim 6
Dependent Claim
90 words
A process as defined in claim 1, wherein the step of irradiating said foil or fibers comprises adjusting the magnitude of high-energy radiation so that the effects of the same extend substantially throughout the entire cross sections of said foil or fibers; and further comprising the step of heating one major surface of the foil or the unseparated fibers and cooling the other major surface of said foil or unseparated fibers to thereby cause differential modification of the structure of said foil or unseparated fibers through the cross sections thereof.
Claim 7
Dependent Claim
46 words
A process as defined in claim 1, wherein the step of irradiating said foil or fibers comprises adjusting the magnitude of high-energy radiation so as to limit the effects of the same to only a portion of the total cross sections of said foil or fibers.
Claim 8
Dependent Claim
24 words
A process as defined in claim 1, wherein the step of treating said irradiated foil or fibers comprises contacting the same with hot air.
Claim 9
Dependent Claim
38 words
A process as defined in claim 1, wherein the step of treating said irradiated fibers comprises heating the same to a temperature sufficient to cause shrinkage of said fibers and simultaneous bonding of the same to one another.
Claim 10
Dependent Claim
28 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential cross-linking and differential degradation during said process.
Claim 11
Dependent Claim
28 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential cross-linking and differential grafting during said process.
Claim 12
Dependent Claim
28 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential degradation and differential grafting during said process.
Claim 13
Dependent Claim
30 words
A process as defined in claim 1, wherein said foil or fibers are composed of a synthetic polymer which undergoes differential cross-linking, differential degradation and differential grafting during said process.
References Cited (Backward Citations)
US3165563A
Cited
US3562382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |