The present invention relates to the field of textile technology and specifically discloses a yarn solution dyeing process. The yarn solution dyeing process comprises the following steps: S1. Preparing the color paste: Uniformly mixing dye, dispersant, erucamide, and N-methylpyrrolidone to obtain the color paste; S2. Preparing color masterbatch: First, mix polyamide chips, color paste, and functional additives to obtain a premix; then feed the premix into a twin-screw extruder for melt extrusion and pelletization, followed by drying to obtain color masterbatch; S3. Yarn Preparation: The masterbatch undergoes spinning, cooling, oiling, drawing, heat setting, and winding to produce solution-dyed fibers. These fibers are then spun into yarn. This solution-dyeing process is simple to operate, resulting in nylon yarn with uniform coloration, high lightfastness, and excellent mechanical properties. It expands the market applications of nylon while offering energy-saving, environmentally friendly, and sustainable benefits.
Country Code: CN
Application Number: CN202211312835.1
