The invention discloses a
dyeing process of cotton and linen blended fabric. The
dyeing process includes the following steps that (1) pre-finishing is carried out, wherein gray fabric of the cotton and linen blended fabric is prepared and then is placed into water for pre-
wetting at a
room temperature after singeing, light fastness reinforcing agents and anti-creasing agents are added, a pH value is adjusted, the grey fabric is soaked at a higher temperature, and then
desizing, boiling-off and bleaching are carried out; (2)
dyeing is carried out, wherein different kinds of active dye are selected according to different color requirements, the grey fabric pre-finished in the step (1) is put into water, dye leveling agents, buffer solutions, carrier auxiliaries and
softening agents are added into the water, then
disperse dye and the active dye are added, the temperature is raised and then dyeing is carried out in a differential dyeing method; (3) post finishing is carried out, wherein anti-shrinking finishing is carried out, the fabric is immersed in alkali liquor, the fabric is piled and shrunk, the fabric is washed to remove the alkali liquor, curing is carried out after the fabric is dried, then tentering, shaping and preshrinking are carried out, and finally the fabric is rolled. The dyed fabric is good in quality, light fastness is high, the fabric is not prone to
fading under the combined action of light,
oxygen and other chemical substances and wrinkling phenomena are effectively reduced.