A kind of method of continuous heat-melt dyeing of polyester

Abstract

The invention discloses a method for continuous heat-melt dyeing of polyester, which comprises the steps of padding the polyester with a dyeing solution, drying, baking and washing with water. The dyeing solution includes liquid disperse dye, prepolymer A, prepolymer B, prepolymer C, synthetic thickener and penetrant. The advantage of this method is that the uniformity of dyeing is good, the dye does not migrate during drying, the relative fixation rate of the dye is high, the color fastness is excellent, and there is almost no discharge of colored wastewater, and the processing equipment is all conventional equipment. Continuous dyeing processing technology for energy saving 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...