Micro-suspension dyeing of silk

Salt-free dyeing of silk with Lanasol dyestuffs in a micro-suspension dyeing system was investigated. The comparison of the micro-suspension dyeing with the traditional dyeing was made and the process parameters for the former were optimized. The results indicate that the rubbing damage of fabric surface caused by the inorganic salts was alleviated and the ratios of both exhaustion and fixation were significantly increased in the micro-suspension dyeing. The brightness of samples dyed in the micro-suspension process was superior to those obtained in the traditional process.