Method for achieving continuous pad-dry-cure dyeing of polyester

Abstract

The invention discloses a method for achieving continuous pad-dry-cure dyeing of polyester. The method comprises the steps of padding of the polyester in a dyeing solution, drying, curing and water processing. The dyeing solution comprises liquid disperse dye, prepolymer A, prepolymer B, prepolymer C, a synthetic thickener and a penetrating agent. The method has the advantages that the dyeing uniformity is good, the dye is not prone to migration in the drying process, the relative fixation rate of the dye is high, the dyefastness is good, colored wastewater discharge almost does not exist, processing equipment is conventional equipment, and the method is a continuous dyeing processing technology achieving energy conservation and emission reduction.

Description

technical field

[0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a method for continuous hot-melt dyeing of polyester, which is used for the dyeing process of polyester fabric with low water consumption, energy saving and emission reduction. Background technique

[0002] Generally speaking, polyester fabrics are mostly dyed in batches, continuous hot-melt dyeing is not suitable for dyeing pure polyester fabrics, and hot-melt dyeing of polyester / cotton blended or interwoven fabrics is a conventional dyeing technique. The main reasons why pure polyester fabrics do not use hot-melt dyeing are: 1) The dye is prone to migration and dyeing is uneven. The slightly water-soluble disperse dye is temporarily fixed on the surface of the fiber through continuous pad dyeing. During the drying process, due to The hydrophobic and smooth surface structure of polyester fiber lacks strong binding force with slightly water-soluble...