Hemp and denim active dye and dyeing technology
A technology of reactive dyes and denim, which is applied in dyeing, textiles and papermaking, and can solve the problems of poor reproducibility, difficulty, and insufficient stability of color and light in dyeing
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[0070] Described hemp denim reactive dyestuff, its formula and technology are as follows:
[0071] Formula: reactive yellow 3RS3% owf, sodium chloride 4% owf, sodium carbonate 2.5% owf, polyvinylamine 2.0% owf, penetrant TR5% owf, bath ratio: 1:10.
[0072] Process: Warp beam, scouring, dyeing, color fixing, washing with warm water, drying, and it is ready. Among them, the yarn is treated with penetrating agent TR for scouring, the temperature is 60°C, 3 passes of dyeing with reactive dyes and sodium chloride are added at 70°C, each dipping time is 16s, and 3 passes of sodium carbonate and polyvinylamine are added for color fixation at 90°C. The fixation time is 90s each time, the dyeing speed is 18m / min, two washes with warm water at 60°C, and then dried.
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