Patent US4391604A successfully refreshed from Google Patents.
US4391604A
Expired / Lapsed
US
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Process for dyeing textile fabric: mechanical treatment to promote foaming in fabric before steaming
Assignee: Dura Tufting GmbH
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Filing: 1981-10-20
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Granted: 1983-07-05
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Expires: 2001-10-20
Abstract
Abstract The dyeing of textile fabrics conventionally calls for the wetting of fabric pile with a dye solution. Difficulties arise in achieving uniform wetting and consequently uniform dyeing of the textile fabric without expenditure of large amounts of energy or dyeing solution. The present invention solves the problem of uniform dyeing according to a process wherein the textile fabric is wetted with an unfoamed dyeing solution containing a foaming agent, followed by mechanical treatment by means of alternating compression and relief and finally, a steam treatment process.
Inventors
- 👤 Hans Schomakers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
D; D06; D06B; D06B19/00; D06B19/0088; D06B19/0094; Y; Y10; Y10S; Y10S8/00; Y10S8/929
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
A process of dyeing textile fabrics comprising: (a) wetting a fabric with an unfoamed dyeing solution containing foaming agents; (b) exposing the wetted fabric to a mechanical treatment consisting of alternating compression and relief; and (c) subjecting the wetted, mechanically treated fabric to a steaming treatment.
Claim 2
Dependent Claim
46 words
A process of dyeing textile fabrics comprising: (a) wetting a fabric with an unfoamed dyeing solution containing foaming agents; (b) exposing the wetted fabric to a mechanical treatment consisting of alternating compression and relief; and (c) subjecting the wetted, mechanically treated fabric to a steaming treatment.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said fabric is a continuous fabric and steps (a), (b) and (c) are conducted continuously.
Claim 4
Dependent Claim
37 words
The process of claim 1 or 2 wherein said fabric is wetted with said dyeing solution in an amount of about 50% to about 150% with respect to the dry weight of the fabric to be dyed.
Claim 5
Dependent Claim
29 words
The process of claim 3 wherein said mechanical treatment consists of alternating compression and relief brought about by passing the fabric over at least one set of compression rollers.
Claim 6
Dependent Claim
25 words
The process of claim 3 wherein said mechanical treatment consists of alternating compression and relief brought about by passing the fabric through a mill operation.
Claim 7
Dependent Claim
21 words
The process of claim 1 or 2 further comprising prewashing said fabric prior to wetting said fabric with the dyeing solution.
Claim 8
Dependent Claim
25 words
The process of claim 6 further comprising removal of moisture from said prewashed fabric by suction prior to wetting said fabric with the dyeing solution.
Claim 9
Dependent Claim
14 words
The process of claim 1 or 2 wherein said fabric is a non-woven fabric.
Claim 10
Dependent Claim
13 words
The process of claim 8 wherein said non-woven fabric is a pile fabric.
Claim 11
Dependent Claim
13 words
The process of claim 8 wherein said fabric is a tufted pile fabric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |