The invention discloses a
dyeing and finishing process for
modal fabric. The process comprises the procedures of pretreatment, pre-setting, modification treatment,
dyeing, soaping, fixation, after-finishing,
drying,
sizing,
calendering and rolling. According to the invention, pretreatment is carried out by adopting ultrasonic wave, and a step of modification treatment is added; in the
dyeing procedure, a base
substituent SA is used, use of a large quantity of alkaline substances and inorganic salt is avoided, nature dye is adopted, and colophony
powder is added as a fixing agent, so that the color fixing effect is enhanced, environmental
pollution is avoided, and the requirement of green
environmental protection is met; furthermore, montmorillonoid is adopted to carry out modification treatment and
flame retardant treatment on the fabric, so that the
flame retardancy of the fabric is high. According to the invention, a yellowing-resisting
reagent is used in the procedures of pre-setting,
sizing and after-finishing, so that the final fabric cannot become yellow easily.