US4087242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of variegated polyester yarn and fabric
Assignee: Monsanto North Carolina Inc
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Filing: 1976-03-02
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Granted: 1978-05-02
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Expires: 1996-03-02
Abstract
Abstract A polyester yarn is treated, so that it may be dyed in yarn or fabric form to a variegated appearance, by running partially oriented polyester feeder yarn over a surface wetted with a liquid reagent which alters the affinity of the yarn to a disperse dye, followed by drawing or draw-texturing. The surface may be a groove formed across the tip of a capillary tube wherein the groove is wetted by a liquid reagent supplied through the bore of the tube. Intermittent contact between the feeder yarn and the reagent is thereby obtained.
Inventors
- 👤 Floyd Frank
- 👤 Aylmer John Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:04
CPC Classifications
D; D06; D06B; D06B11/00; D06B11/0079; D06B11/0086
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
148 words
A process for producing polyester yarn, capable of being dyed in yarn or fabric form to a variegated appearance, said process comprising running partially oriented polyester feeder yarn with freedom of lateral movement over and in contact with a smooth, stationary, horizontally positioned surface wetted with a liquid reagent capable of altering the affinity of the yarn to a disperse dye, said liquid reagent being supplied to said surface through an orifice in said surface, said orifice having a diameter of from about 0.1 to about 3 mm., the yarn running speed and the reagent flow rate being adjusted to prevent continued contact between yarn and reagent, whereby the yarn wipes the wetted surface to an intermittent and essentially dry state before the surface is again wetted by the reagent and random contact between said feeder yarn and said reagent is obtained, and thereafter drawing or draw-texturing yarn.
Claim 2
Dependent Claim
148 words
A process for producing polyester yarn, capable of being dyed in yarn or fabric form to a variegated appearance, said process comprising running partially oriented polyester feeder yarn with freedom of lateral movement over and in contact with a smooth, stationary, horizontally positioned surface wetted with a liquid reagent capable of altering the affinity of the yarn to a disperse dye, said liquid reagent being supplied to said surface through an orifice in said surface, said orifice having a diameter of from about 0.1 to about 3 mm., the yarn running speed and the reagent flow rate being adjusted to prevent continued contact between yarn and reagent, whereby the yarn wipes the wetted surface to an intermittent and essentially dry state before the surface is again wetted by the reagent and random contact between said feeder yarn and said reagent is obtained, and thereafter drawing or draw-texturing yarn.
Claim 3
Dependent Claim
46 words
A process as in claim 1 wherein the degree of orientation of said feeder yarn is such that said feeder yarn will exhibit no more than a 10% load increase with a 10% increase in elongation at some point on the stress/strain curve for said yarn.
Claim 4
Dependent Claim
22 words
A process as in claim 2 wherein said feeder yarn is drawn to a draw ratio of about 1.5 to about 4.0.
Claim 5
Dependent Claim
37 words
A process as in claim 1 wherein said reagent is a polyester solvent which will cause a loss in tensile strength of no more than 40% in said feeder yarn as a result of said intermittent contact.
Claim 6
Dependent Claim
25 words
A process as in claim 4 wherein said reagent is selected from ethylene dichloride, methylene dichloride, trichlorobenzene, dioxane, acetone, perchloroethylene, 1,1,1-trichloroethane and any mixtures thereof.
Claim 7
Dependent Claim
34 words
A process as in claim 5 wherein said mixtures comprise the following: 50-90% perchloroethylene and the balance being methylene dichloride; 70-95% 1,1,1-trichloroethane and the balance being ethylene dichloride, methylene dichloride, trichlorobenzene, dioxane or acetone.
Claim 8
Dependent Claim
21 words
A process as in claim 1 wherein the path in which said feeder yarn runs over said surface includes said orifice.
Claim 9
Dependent Claim
21 words
A process as in claim 1 wherein the path in which said feeder yarn runs over said surface excludes said orifice.
Claim 10
Dependent Claim
16 words
A process as in claim 1 wherein said path defines an S-shaped curve over said surface.
Claim 11
Dependent Claim
32 words
A process as in claim 1 wherein said surface is defined by a groove in the tip of a capillary tube, and said orifice is defined by the bore of said tube.
Claim 12
Dependent Claim
49 words
A process as in claim 1 wherein the running speed of said polyester yarn is at least about 50 mm./min. and said yarn is heated above the boiling point of said reagent but below the melting point of said yarn after contact with said reagent and before said draw-texturing.
Claim 13
Dependent Claim
28 words
A process as in claim 11 wherein said yarn is heated about 2 to about 20 inches from the point of contact between said reagent and said yarn.
References Cited (Backward Citations)
US1992259A
Cited
US1968677A
Cited
US3153106A
Cited
US3366299A
Cited
US3589854A
Cited
US3634580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |