Discussion
Pad-batch dyeing of cotton with reactive dyes involves
Answer: A
Correct answer: padding dye and alkali on, then batching
In pad-batch the fabric is padded with reactive dye and alkali together, then rolled up, wrapped and rotated slowly for a few hours to a day while the fixation proceeds at room temperature. It needs no steam and very little water, which makes it one of the most economical routes for cotton - its costs are the floor space and the batching time.
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