Short-process water-free dyeing method of terylene velboa

Abstract

The invention discloses a short-process water-free dyeing method of terylene velboa, and belongs to the field of spinning dyeing. The method is characterized in that a special drying working solutionis used for dyeing in an one-soaking one-rolling manner; the processes of increasing temperature, decreasing temperature and increasing temperature are carried out in the roasting stage, so that the dispersed dye can be spread fully in the fibers, and the heads of fibers can be dyed, and the color fixing can be completed. The dyed terylene velboa prepared with the method has the advantages that the light fastness is up to 6-7 levels, and the washing fastness is up to 4-5 levels, so that the water-free dyeing of the terylene velboa is realized.

Description

technical field [0001] The invention relates to a short-process anhydrous dyeing method for polyester plush cloth, which belongs to the field of textile printing and dyeing. Background technique [0002] Polyester fiber has excellent new performance, high strength, good elasticity, good heat resistance, thermoplasticity and abrasion resistance, so it is widely used in the textile field. Polyester is a hydrophobic fiber, its macromolecules are densely arranged, its glass transition temperature is high, and its molecular structure lacks active groups that can combine with dyes like cellulose or protein fibers, so its dyeing process is relatively difficult, and generally requires Disperse dyes are dyed by high temperature and high pressure method (120°C~130°C) or hot melt (180°C~220°C). into the interior of the fiber. [0003] The existing polyester cloth dyeing process requires a large amount of water in the steps of neutralization treatment, dyeing, and post-reduction clean...

AI Technical Summary

Problems solved by technology

[0003] The existing polyester cloth dyeing process requires a large amount of water in the early neutralization treatment, dyeing, post-reduction cleaning and other steps. It takes about 30 tons of water to dye 1 ton of fabric, and the dyeing process needs to consume a lot of water resources, and The wastewater needs to be treated before it can be discharged, which will greatly increase the production cost of the manufacturer. At the same time, the discharge of sewage conflicts with the production goals of green environmental protection.

[0004] In order to solve the above problems, anhydrous dyeing technology has emerged in recent years. At present, there are supercritical carbon dioxide dyeing, ionic liquid as a solvent for disperse dyes, and pad dyeing. Although supercritical carbon dioxide dyeing is environmentally friendly And it can be recycled, but its equipment cost is high and its production output is low, which hinders its promotion and application in the market; patent CN102776790A discloses a kind of using ionic liquid as a solvent to dissolve disperse dyes, without adding leveling agent, dispersant and Solubilizers, etc., use the methods of exhaust dyeing and hot-melt pad dyeing to achieve water-free dyeing, but the cost of ionic liquids is expensive, and new equipment needs to be added for recovery of ionic liquids. Therefore, its promotion and application need further improvement