Lyocell Dyeing and Finishing Processes
topic
Dyeing with reactive dyes (60-70% of applications—excellent wash fastness, bright shades), direct dyes (cost-effective, lower fastness), vat dyes (denim), and sulfur dyes. Fibrillation control via enzymatic treatment (cellulase 0.5-2% owf at pH 5-6, 50°C, 30-60 min) or resin finishing. Finishing includes softening, anti-pilling, easy-care (crosslinking), and functional finishes (water-repellent, antimicrobial).
Role
Optimized dyeing-finishing protocols manage fibrillation while achieving desired aesthetics and performance, critical for market acceptance and end-use durability.
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