Patent US3832759A successfully refreshed from Google Patents.
US3832759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for texturizing yarn
Assignee: Akzona Inc
•
Filing: 1972-03-23
•
Granted: 1974-09-03
•
Expires: 1992-03-23
Abstract
Abstract Continuous thermoplastic multifilament yarn is texturized by aspirating such yarn into a pneumatic jet with dry gas followed by passing said yarn through said jet into a crimping tube having exhaust ports, and then passing said yarn into an accumulator chamber with steam being supplied thereto to produce bulked yarn which can then be passed to a take-up package; annealing and air tangling after-treatment, prior to take-up, are optional. Yarn so processed travels at a comparatively high and increased rate of speed to thus achieve a more effective processing system. A conventional mechanical stuffer box can be incorporated between said accumulator chamber and the take-up package to further increase bulking prior to annealing and air tangling which are optional, depending on the feeder yarn and/or the desired bulk level. The feeder yarn to be processed may also be pretreated to have a latent crimp which is developed and stabilized during the texturizing process.
Inventors
- 👤 B Eskridge
- 👤 R Fink
- 👤 B Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:49
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
152 words
Apparatus for continuously texturizing yarn comprising a pneumatic aspirator having an internally disposed passage for the introduction of a gas and a yarn to be pneumatically conveyed, a venturi portion in said passage and a gas inlet means for supplying a gas under pressure into said venturi portion to thereby create a suction motivating force to convey the yarn through the passage of said aspirator, a narrow crimping tube secured at the aspirator for receiving said yarn, exhaust ports in the tube through which at least part of the gas is removed, a yarn accumulator chamber surrounding a portion of the exit end of the tube, the chamber being adapted to contain a compacted yarn mass therein, and steam inlet means for introducing saturated steam into said chamber and adjacent to the exit end portion of said tube, whereby the portion of the tube surrounded by said chamber is heated by steam.
Claim 2
Dependent Claim
152 words
Apparatus for continuously texturizing yarn comprising a pneumatic aspirator having an internally disposed passage for the introduction of a gas and a yarn to be pneumatically conveyed, a venturi portion in said passage and a gas inlet means for supplying a gas under pressure into said venturi portion to thereby create a suction motivating force to convey the yarn through the passage of said aspirator, a narrow crimping tube secured at the aspirator for receiving said yarn, exhaust ports in the tube through which at least part of the gas is removed, a yarn accumulator chamber surrounding a portion of the exit end of the tube, the chamber being adapted to contain a compacted yarn mass therein, and steam inlet means for introducing saturated steam into said chamber and adjacent to the exit end portion of said tube, whereby the portion of the tube surrounded by said chamber is heated by steam.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, including stuffer box crimping means arranged after said accumulator chamber wherein the compacted yarn is recrimped in said stuffer box means.
Claim 4
Dependent Claim
45 words
The apparatus of claim 1, including a steam annealing means, an air tangling means, and a yarn collecting means wherein the compacted yarn is further treated by said steam annealing means and by said air tangling means prior to winding on said yarn collecting means.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1, wherein the steam inlet means is positioned to introduce steam below the exit end of said crimping tube.
Claim 6
Dependent Claim
26 words
The apparatus of claim 1, wherein the accumulator chamber has a diameter that is at least two times larger than the diameter of the crimping tube.
Claim 7
Dependent Claim
147 words
A continuous process for texturizing synthetic polymeric yarn which comprises drawing a yarn into an aspirator zone with a dry gas, pneumatically conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone while exhausting part of the gas laterally from said crimping zone, supplying heat to at least a part of said crimping zone, forming a sawtooth crimp within said yarn in said crimping zone as a result of the back pressure created in said crimping zone and the supply of heat, passing the yarn to an accumulator zone that has a diameter at least twice that of said crimping zone to induce curvilinear bends along a length of the yarn, setting the crimp and the bends in the accumulator zone by exposing the yarn to wet saturated steam within said zone, and withdrawing the yarn from said accumulator zone.
Claim 8
Dependent Claim
147 words
A continuous process for texturizing synthetic polymeric yarn which comprises drawing a yarn into an aspirator zone with a dry gas, pneumatically conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone while exhausting part of the gas laterally from said crimping zone, supplying heat to at least a part of said crimping zone, forming a sawtooth crimp within said yarn in said crimping zone as a result of the back pressure created in said crimping zone and the supply of heat, passing the yarn to an accumulator zone that has a diameter at least twice that of said crimping zone to induce curvilinear bends along a length of the yarn, setting the crimp and the bends in the accumulator zone by exposing the yarn to wet saturated steam within said zone, and withdrawing the yarn from said accumulator zone.
Claim 9
Dependent Claim
18 words
The process of claim 6, wherein the gas is air compressed to 80-100 psig and at ambient temperature.
Claim 10
Dependent Claim
28 words
The process of claim 6, wherein the saturated steam is at a temperature of about 100* C. and a pressure of from about 2 to about 15 psig.
Claim 11
Dependent Claim
34 words
The process of claim 6, wherein said accumulator zone surrounds the outlet end of said crimping zone and said yarn is heated by said steam in said outlet end before entering said accumulator zone.
Claim 12
Dependent Claim
26 words
The process of claim 6, wherein the texturized yarn is further treated by steam annealing and by air tangling prior to winding into a yarn package.
Claim 13
Dependent Claim
147 words
A continuous process for texturizing synthetic polymeric yarn which comprises drawing a yarn into an aspirator zone with a dry gas, pneumatically conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone while exhausting part of the gas laterally from said crimping zoNe, the outlet end of said crimping zone being surrounded by an accumulator zone, supplying wet saturated steam to said accumulator zone, heating the yarn by said steam in the outlet end of said crimping zone, forming a crimp within said yarn in said crimping zone as a result of the back pressure created in said crimping zone and the heat of said steam, passing the yarn to said accumulator zone, setting the crimp in the accumulator zone by exposing the yarn to said wet saturated steam within said zone, and withdrawing the yarn from said accumulator zone.
Claim 14
Dependent Claim
147 words
A continuous process for texturizing synthetic polymeric yarn which comprises drawing a yarn into an aspirator zone with a dry gas, pneumatically conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone while exhausting part of the gas laterally from said crimping zoNe, the outlet end of said crimping zone being surrounded by an accumulator zone, supplying wet saturated steam to said accumulator zone, heating the yarn by said steam in the outlet end of said crimping zone, forming a crimp within said yarn in said crimping zone as a result of the back pressure created in said crimping zone and the heat of said steam, passing the yarn to said accumulator zone, setting the crimp in the accumulator zone by exposing the yarn to said wet saturated steam within said zone, and withdrawing the yarn from said accumulator zone.
Claim 15
Dependent Claim
147 words
A continuous process for developing and stabilizing a latent crimp in synthetic polymeric yarn which comprises applying a latent crimp to a synthetic yarn, drawing the yarn into an aspirator zone by dry cool air, conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone, supplying heat to at least a portion of said crimping zone, forming a sawtooth crimp within said yarn in said crimping zone, pneumatically pushing the yarn from said crimping zone under substantially no tension into an accumulator zone that has a diameter at least twice that of said crimping zone to induce curvilinear bends along a length of said yarn, and developing the latent crimp and setting the sawtooth crimp and the bends in said accumulator zone by exposing the yarn to wet saturated steam, and thereafter withdrawing the crimped yarn from said accumulator zone.
Claim 16
Dependent Claim
147 words
A continuous process for developing and stabilizing a latent crimp in synthetic polymeric yarn which comprises applying a latent crimp to a synthetic yarn, drawing the yarn into an aspirator zone by dry cool air, conveying the yarn through the aspirator zone, pneumatically forcing the yarn into a narrow elongated crimping zone, supplying heat to at least a portion of said crimping zone, forming a sawtooth crimp within said yarn in said crimping zone, pneumatically pushing the yarn from said crimping zone under substantially no tension into an accumulator zone that has a diameter at least twice that of said crimping zone to induce curvilinear bends along a length of said yarn, and developing the latent crimp and setting the sawtooth crimp and the bends in said accumulator zone by exposing the yarn to wet saturated steam, and thereafter withdrawing the crimped yarn from said accumulator zone.
Claim 17
Dependent Claim
17 words
The process of claim 12, wherein the air is compressed to 80-100 psig and at ambient temperature.
Claim 18
Dependent Claim
27 words
The process of claim 12, wherein the saturated steam is at a temperature of about 100* C. at a pressure of from about 2 to 15 psig.
Claim 19
Dependent Claim
22 words
The process of claim 12, wherein the latent crimp is applied to said yarn by asymmetrically heating a drawn yarn under tension.
Claim 20
Dependent Claim
22 words
The process of claim 12, wherein the latent crimp is applied to said yarn by asymmetrically cooling a drawn yarn under tension.
Claim 21
Dependent Claim
34 words
The process of claim 12, wherein said accumulator zone surrounds the outlet end of said crimping zone and said yarn is heated by said steam in said outlet end before entering said accumulator zone.
References Cited (Backward Citations)
CA763156A
Cited
US2854728A
Cited
US3482294A
Cited
US3289265A
Cited
US3345719A
Cited
US3343240A
Cited
US3417445A
Cited
US3530660A
Cited
US3501819A
Cited
US3480709A
Cited
US3616503A
Cited
US3461521A
Cited
US3457610A
Cited
US3576058A
Cited
US3663352A
Cited
US3594878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |