US3751778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the simultaneous texturing and dyeing or finishing of thermoplastic yarns
Assignee: Rhodiaceta SA
•
Filing: 1971-10-07
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Granted: 1973-08-14
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Expires: 1991-10-07
Abstract
Abstract A process for the simultaneous texturizing, i.e. crimping, and dyeing or finishing of thermoplastic yarns comprising packing and compressing the yarns into a confined space through introduction of a flow of a compressed fluid heated to a temperature sufficient to set the yarns, allowing a portion of the compressed fluid to provide movement of the yarns axially in the confined space with the remainder of the fluid escaping laterally from the confined space into further annular space under a pressure lower than the pressure of the confined space, but higher than atmospheric pressure; and simultaneously introducing at least one dyeing solution or finishing agent into the confined space over the compressed yarns, such process being characterized in that the compressed yarn is continuously passed through at least one expansion zone and thereafter through at least one zone in which a further fluid is introduced under pressure. Such process allows for the simultaneous dyeing or finishing of thermoplastic yarns in a high speed texturizing process.
Inventors
- 👤 R Vidal
- 👤 P Grosjean
- 👤 R Guillermin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; D02G1/122; D06; D06B; D06B3/00; D06B3/04; D06B3/045
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
15 words
The process of claim 1 wherein said first and second fluids are the same fluid.
Claim 2
Dependent Claim
13 words
The process of claim 2 wherein said first and second fluids are steam.
Claim 3
Dependent Claim
38 words
The process of claim 1 wherein said compressed yarn passes through at least one expansion zone; thereafter through at least one zone in which said second fluid is injected and thereafter through at least one further expansion zone.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein said at least one dyeing solution additionally contains a finishing agent.
Claim 5
Dependent Claim
80 words
The process of claim 1 wherein said compressed yarn passes through a first expansion zone wherein said first compressed fluid expands under a pressure close to atmospheric pressure; thereafter said compressed yarn passes through an injection zone wherein said second fluid is injected under a high pressure substantially equal to the pressure of the first texturizing fluid, and finally said compressed yarn passes through a further expansion zone maintained at a pressure substantially the same as said first expansion zone.
Claim 6
Dependent Claim
15 words
The process of claim 6 wherein said first and second fluids are the same fluid.
Claim 7
Dependent Claim
13 words
The process of claim 7 wherein said first and second fluids are steam.
Claim 8
Dependent Claim
144 words
In a process for the simultaneous crimping and finishing thermoplastic filament yarns at high speeds comprising packing and compressing said yarns into a confined space by introduction of a flow of a first compressed fluid, said first compressed fluid being heated to a temperature sufficient to set said yarns; allowing a portion of said first compressed fluid to provide movement of said yarns axially in said confined space, the remainder of said fluid escaping laterally from said confined space into a further space under a pressure lower than the pressure of said confined space, but higher than atmospheric pressure; and simultaneously introducing at least one finishing solution into said confined space over the compressed yarns, the improvement wherein the compressed yarn passes through at least one expansion zone and thereafter through at least one zone in which a second fluid is introduced under pressure.
Claim 9
Dependent Claim
15 words
The process of claim 9 wherein said first and second fluids are the same fluid.
Claim 10
Dependent Claim
13 words
The process of claim 10 wherein said first and second fluids are steam.
Claim 11
Dependent Claim
38 words
The process of claim 9 wherein said compressed yarn passes through at least one expansion zone; thereafter through at least one zone in which said second fluid is injected and thereafter through at least one further expansion zone.
Claim 12
Dependent Claim
80 words
The process of claim 9 wherein said compressed yarn passes through a first expansion zone wherein said first compressed fluid expands under a pressure close to atmospheric pressure; thereafter said compressed yarn passes through an injection zone wherein said second fluid is injected under a high pressure substantially equal to the pressure of the first texturizing fluid, and finally, said compressed yarn passes through a further expansion zone maintained at a pressure substantially the same as said first expansion zone.
Claim 13
Dependent Claim
15 words
The process of claim 13 wherein said first and second fluids are the same fluid.
Claim 14
Dependent Claim
13 words
The process of claim 14 wherein said first and second flUids are steam.
References Cited (Backward Citations)
FR1452774A
Cited
US3644969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |