Dyeing and Finishing Technology of Polyester Nylon Sydney Velvet Imitation Cotton Fabric

Abstract

The invention relates to a dyeing and finishing process for polyester brocade sydney down cotton-imitated fabric. The dyeing and finishing process comprises steps of cold stacking, open width, splitting through refining by alkali liquor, dyeing and shaping. According to the dyeing and finishing process, the polyester brocade composite fiber fabric has soft and fluffy hand feel and excellent moisture absorption and wet permeability performances so as to be more similar to cotton fabric, and the polyester brocade composite fiber fabric also holds the wearability. By screening the dye and controlling the new dyeing and finishing process, all the fastness of the polyester brocade composite fiber fabric are improved; the market additional value and wearability of the fabric are fully improved through after finishing of freshness treatment and moisture absorption and sweat releasing.

Description

technical field [0001] The invention relates to a dyeing and finishing 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 ev...

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

Images