Discussion
Arrange the stages of a pad-batch reactive dyeing in order.
1. rotate slowly for the fixation dwell
2. pad the fabric with dye and alkali
3. wash off the unfixed dye
4. batch it on a roll under cover
Answer: B
Fixation happens during the dwell rather than in a machine, which is what makes the process so economical. Washing off is still needed because reactive dyes never fix completely. The dwell replaces the machine entirely.
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