Dyeing process of Anozol ECO reactive dyes on cotton pile fabrics

Continuous pad-dyeing of cotton pile fabrics with reactive dyes often leads to chromatic difference between the tip and valley of the pile,streak dyeing on the pile face,and shading on the back of pile fabric.For this reason,Anozol ECO reactive dyes were used to dye cotton pile fabrics followed by wet steaming.The dyeing result was evaluated based on compatibility of dyes,K/S value,depth of shade,color difference between the face and back of the dyed fabrics.The optimum dyeing conditions were obtained by single factor tests,i.e.,dye 5 g/L,auxiliary 10 mL/L,anhydrous Na2SO450 g/L,Na2CO340 g/L,steaming time 1.5 min.When compared with the dyeing-curing process,this dyeing method featured lower energy consumption,good dyed depth,brilliant shade,and reduced color difference between the face and back of the dyed fabrics.