US4351641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous dyeing of pile fabrics
Assignee: Shaw Industries Group Inc
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Filing: 1980-05-14
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Granted: 1982-09-28
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Expires: 2000-05-14
Abstract
Abstract A method for continuous dyeing of pile fabric using a Kusters dye applicator is disclosed. The method concerns the use of a dye solution comprising at least two dyestuffs, the dyestuffs being selected to have approximately equal strike rates, and a sufficient amount of a thickening agent to provide a dye solution-viscosity of from about 300 to about 1000 centipoise (Brookfield Viscometer). The resulting dyed carpet exhibits excellent shade uniformity in the across machine direction.
Inventors
- 👤 Thomas M. Tymon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:42
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0004; D06P3/00; D06P3/02; D06P3/04; D06P3/24; Y; Y10; Y10S; Y10S534/00; Y10S534/01; Y10S8/00; Y10S8/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A method for producing continuous dyed pile fabric comprising: (a) passing the pile fabric through a wet out bath comprising a wetting agent and an agent for pH adjustment; (b) applying, to the entire pile surface of the wetted out pile fabric, using a Kusters dye applicator, an aqueous dye solution comprising at least two dyestuffs, the dyestuffs being selected to have approximately equal strike rates, and a sufficient amount of thickening agent to provide a dye solution viscosity of from about 300 to about 1,000 centipoise (Brookfield Viscometer); (c) steaming to fix the dyes on the pile fabric; and, (d) washing the pile fabric to remove chemicals and any unfixed dyes; wherein the resulting dyed pile fabric exhibits more uniform shade in the across machine direction as compared to the uniformity of shade obtained using a Kusters dye applicator to apply said dye solution at a conventional Kusters applicator viscosity of less than about 100 centipoise (Brookfield Viscometer).
Claim 2
Independent Claim
159 words
A method for producing continuous dyed pile fabric comprising: (a) passing the pile fabric through a wet out bath comprising a wetting agent and an agent for pH adjustment; (b) applying, to the entire pile surface of the wetted out pile fabric, using a Kusters dye applicator, an aqueous dye solution comprising at least two dyestuffs, the dyestuffs being selected to have approximately equal strike rates, and a sufficient amount of thickening agent to provide a dye solution viscosity of from about 300 to about 1,000 centipoise (Brookfield Viscometer); (c) steaming to fix the dyes on the pile fabric; and, (d) washing the pile fabric to remove chemicals and any unfixed dyes; wherein the resulting dyed pile fabric exhibits more uniform shade in the across machine direction as compared to the uniformity of shade obtained using a Kusters dye applicator to apply said dye solution at a conventional Kusters applicator viscosity of less than about 100 centipoise (Brookfield Viscometer).
References Cited (Backward Citations)
US4213759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |