Dyeing technology for polyester brocade sydney down cotton-imitated fabric

Abstract

The invention relates to a dyeing technology for polyester brocade sydney down cotton-imitated fabric. The dyeing technology comprises steps of firstly adding a colouring agent and a dyeing auxiliary into the grey cloth of polyester brocade composite fiber fabric, gradually heating up to 123-127 DEG C, keeping warm for 38-42 minutes at 123-127 DEG C, and next fixing color, washing and neutralizing. By screening the dye and controlling the new technology, the fastness of the polyester brocade composite fiber fabric are improved. According to the new dyeing technology, the soaping fastness of the polyester brocade composite fiber is improved by about 1-1.5 grade, the light fastness and crockfastness are improved by about one grade, and the polyester brocade composite fiber has good smooth and soft feel.

Description

technical field [0001] The invention relates to a dyeing process of polyester-nylon snow pear velvet imitation cotton fabric, which belongs to the technical field of dyeing and finishing of composite fiber fabrics. Background technique [0002] Composite fiber is two or more polymer melts, which are divided by a special distribution plate and extruded through the same spinneret hole. Polyester-nylon composite fibers are usually woven into fabrics with peel-off or island-in-the-sea fibers, and then chemically or mechanically fibrillated to make the fabric present the characteristics of ultrafine fibers. It has the wear resistance, high strength, easy dyeing, and moisture absorption of nylon. It has the advantages of good elasticity, good shape retention, crispness and non-ironing. The linear density of polyester-nylon composite fiber is extremely low, the fiber diameter is generally below 5 μm, and the specific surface area is large, usually several times or even dozens of t...

AI Technical Summary

Problems solved by technology

④Due to the difference in the combination of disperse dyes and nylon fibers, there is a problem of poor light fastness

[0008] The rubbing fastness of polyester-nylon composite silk fabric Sydney velvet is also worse than that of conventional fabrics. The main reasons are: ① polyester-nylon superfine fiber has a large specific surface area and strong dye adsorption ability, and a large amount of dye is adsorbed on the surface of the fiber during dyeing; ② disperse dyes The binding force with nylon fiber is much lower than that of polyester, so the disperse dye attached to nylon is easy to fall off; ③ When the polyester-nylon composite silk fabric is shaped, the disperse dye inside the polyester-nylon fiber will dissipate from the fiber when the fiber expands at high temperature. The interior migrates to the surface of the fiber, forming two floating colors, thereby reducing the rubbing fastness

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