Patent US5707469A successfully refreshed from Google Patents.
US5707469A
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Method of producing dyed nylon walk-off mats having improved washfastness, and mats produced thereby
Assignee: Individual
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Filing: 1996-03-11
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Granted: 1998-01-13
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Expires: 2016-03-11
Abstract
Abstract A method of making a dyed nylon walk-off mat having improved washfastness includes dyeing nylon yarn, or a tufted nylon mat, in a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5. The yarn is then heated, such as by steam, at a temperature above 200° F., after which the yarn is treated with an alkaline solution followed by a heat treatment. A backing, such as of rubber or vinyl, is applied to the mat at an elevated temperature. The application of the backing at elevated temperature, and the heat treatment subsequent to application of the alkaline solution, may be performed simultaneously.
Inventors
- 👤 Robert R. Hixson
- 👤 David R. Kelly
- 👤 Hobert C. Sweatman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:42
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/248; D06N; D06N7/00; D06N7/0063; D06N7/0068; D06N7/0071; D06P1/00; D06P1/44; D06P1/673; D06P1/67333; D06P1/6735; D06P1/67366; D06P5/00; D06P5/02; D06P5/20; D06P5/2066; D06P5/2077; D06N2201/00; D06N2201/02; D06N2201/0263; D06N2203/00; D06N2203/02; D06N2209/00; D06N2209/08; D06N2209/0807; D06N2209/0823; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924; Y10S8/929
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A method of making a dyed nylon walk-off mat having improved washfastness comprising the steps of: (a) providing a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5, (b) applying the dye to nylon yarn to color the latter, (c) heating the yarn to a temperature above 200° F., (d) contacting the yarn with an alkaline solution, (e) tufting the yarn into a walk-off mat either before of after performing steps (b)-(d), (f) applying a heat-responsive, rubber-like backing to the mat, and (g) subjecting the mat and backing to an elevated dry heat temperature, said temperature being high enough to cause the backing to adhere to the mat and also to cause fixation of the fiber reactive dye to the nylon yarn of the mat.
Claim 2
Independent Claim
132 words
A method of making a dyed nylon walk-off mat having improved washfastness comprising the steps of: (a) providing a fiber reactive dye solution having a pH in the range of about 0.5 to about 2.5, (b) applying the dye to nylon yarn to color the latter, (c) heating the yarn to a temperature above 200° F., (d) contacting the yarn with an alkaline solution, (e) tufting the yarn into a walk-off mat either before of after performing steps (b)-(d), (f) applying a heat-responsive, rubber-like backing to the mat, and (g) subjecting the mat and backing to an elevated dry heat temperature, said temperature being high enough to cause the backing to adhere to the mat and also to cause fixation of the fiber reactive dye to the nylon yarn of the mat.
Claim 3
Dependent Claim
19 words
A method as defined in claim 1 including the step of washing the yarn after the heating step (c).
Claim 4
Dependent Claim
22 words
A method as defined in claim 1 including the step of drying the yarn after contacting the yarn with an alkaline solution.
Claim 5
Dependent Claim
25 words
A method as defined in claim 1 wherein the dry heat temperature of step (g) is in the range of 260° F. to 350° F.
Claim 6
Dependent Claim
26 words
A method as defined in claim 1 wherein dye fixation is produced by formation of covalent bonds between the fiber reactive dye and the nylon yarn.
Claim 7
Dependent Claim
18 words
A method as defined in claim 1 wherein the heating step (c) is accomplished by steaming the yarn.
References Cited (Backward Citations)
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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) | 2001-01-12 | 2001-07-14 | 2002-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-12 | 2005-07-14 | 2006-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-12 | 2009-07-14 | 2010-01-13 | $7700.00 | Window Closed / Lapsed |