Method of continuous dyeing with reactive dyes in wet conditions
US11834781B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jul 20, 2021 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P5/2077
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The disclosure provides a method of continuous dyeing with reactive dyes in wet conditions, the method including: 1) adding fabric to a mixture of a dye liquor and an alkali through a one-bath-one-step method; 2) immersing the fabric pretreated in 1) in a padding liquor with an air film horizontal pad dyeing machine; 3) preheating the fabric after being treated in 2) at a temperature of 50-90° C.; and 4) rolling and batching the fabric after being treated in 3) at a temperature of 10-70° C. for 2-72 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.