Methods of Dyeing cotton with Various Reactive dye brands:
Application on cotton fabric by various dyes-
Among these five, below is the explanation of the fourth method.
Explanations -
(4) ME brand reactive dyes -
Properties of ME brand reactive dyes -
(i) Reactive ME brand dyes have advantages over both mono chloro triazine dyes and vinyl sulphone dyes.
(ii) They are low temperature, high exhaust dyes. These dyes, known as bifunctional dyes as previously mentioned, offer a high grade of all-around fastness properties, including resistance to light, perspiration, chlorine, and peroxide washing, as well as high degrees of exhaustion and fixation, better alkali stability, excellent levelling properties, and high reproducibility.
(iii) As used by the cold pad batch process, reactive ME dyes react with the cellulosic fibres at low temperatures.
Dyeing procedure -
(i) Preparation of products for dyeing -
This is kind of like that of the opposite reactive dyes.
(ii) Preparation of dye solution -
Paste the dye powder with cold water and dissolve by adding water at a temperature, not above 50°C.
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| Dyeing cycle for reactive ME brand dyes Steps -t |
(iii) Dyeing cycle -
(2) make sure that its pH is simply below 7
(3) Adjust pH with ethanoic acid if necessary
(4) Enter the fabric and run it in the bath for five minutes
(5) Add pre-dissolved dyes and continue dyeing for 10 minutes
(6) Add the salt in three portions (10%,30% and 60%) during the amount of raising the temperature to 60°C for a half-hour
(7) Dye for a quarter-hour at 60°C after the last salt addiction
(8) Add the alkali; if washing soda is employed as an alkali, this should be added over 10 minutes. If a mixture of washing soda and hydroxide is employed the premixture should be added over a quarter-hour
(9) Dye for an extra 30 to 40 minutes at 60°C depending upon the depth of shade
(10) Drop the tub and wash
Recipe | Quantity |
Reactive ME dye | X% |
Glaubers salt or Common salt | 50 gpl |
Soda ash | 20 gpl |
Dyeing time | 60 minutes |
Dyeing temperature | 60°C |
(iv) Washing off and Soaping:
For maximum fastness wash off efficiently after dyeing. The wash-off cycle is given below :
Time (minutes) | Operation |
10 minutes | Wash cold |
10 minutes | Wash Cold |
15 to 30 minutes | Soap at the boil for heavy shades for two 15 minutes soaps are preferred |
10 minutes | Wash warm(50°C) Wash cold until the wash liquor is clear |
- Which methods are used for the reactive dyeing process?
- Describe ME brand for the reactive dyes process.
- What is the dyeing process for ME brand reactive dyes?
- Which sequence does the ME brand Reactive dyeing process follow?
References
Ahmed, S. (2014, September 29). Reactive dyes - classification. TextileTuts. https://textiletuts.com/reactive-dyes/
Chakraborty, J. N. (2010). Waste-water problem in textile industry. In Fundamentals and Practices in Colouration of Textiles (pp. 381–408). Elsevier.
Clark, M. (2011). Handbook of textile and industrial dyeing: Principles, processes and types of dyes (Matthew Clark, Ed.). Woodhead Publishing.
No title. (n.d.). Acs.org. from https://cen.acs.org/articles/96/i29/new-textile-dyeing-methods-make.html
Patwary, E. M. Z. (2012, February 18). Reactive dyes. Textile Fashion Study; Engr. Mohammad Zillane Patwary. https://textilefashionstudy.com/reactive-dyes-definition-classification-properties-and-influencing-factors/
Sayed, A. (n.d.). Why reactive dye is so called? Blogspot.com. from https://textileapex.blogspot.com/2013/11/reactive-dye.html
(N.d.). Textilelearner.net. from https://textilelearner.net/reactive-dyes-classification-dyeing-mechanism/
What are Reactive Dyes? Types of Reactive Dyes. (n.d.). Meghmaniglobal.com. from https://www.meghmaniglobal.com/what-are-reactive-dyes-types-of-reactive-dyes/
Continue reading,
Part 2 Classification of Reactive dyes
Part 3 The reaction of MCT and DCT of reactive dyes
Part 4 General Factors affecting the results of reactive dyeing
Part 5 Reactive dyeing method - DCT
Part 6 Bifunctional systems of reactive dyes
Part 7 Development of reactive dyes
Part 8 Reactive dyes on Silk and nylon with their application
Part 9 Industrial applications of reactive dyes
Part 10 After treatment of reactive dyes
Writer - Rushikesh Patil (Textile Engineer)
