Processing method for low-elastic non-ironing knitted face fabric

Abstract

The present invention discloses a processing method of a low-elasticity, wrinkle-free knitted fabric, which includes steps: greige cloth weaving, boiling and bleaching, bio-enzyme washing, dyeing, softening, dehydration, scutching, drying, shaping and preshrinking. The present invention is characterized in that the processing steps of pre-relaxation and ammonia mercerization are added before boiling and bleaching, so that the whole processing steps are changed as greige cloth weaving, pre-relaxation, ammonia mercerization, boiling and bleaching, bio-enzyme washing, dyeing, softening, dehydration, scutching, drying, shaping and preshrinking; the pre-relaxation processing is to add refining agent of 0.5 to 1.5g / L, the processing temperature is between 90 and 130 DEG C, and the processing period is twenty to sixty minutes; in the step of ammonia mercerization, the pre-relaxed fabric receives the processing of ammonia mercerization in an ammonia mercerizing machine at the speed of 15 to 50m / min. The present invention ensures that the cotton and the blended elastic knitted fabric can have soft, smooth handfeel and high washing resistance and shape-keeping property.

Description

technical field [0001] The invention relates to a knitted fabric, in particular to a processing method for a low-elasticity non-ironing knitted fabric. Background technique [0002] Cotton elastic knitted fabrics have been very popular in the market in recent years due to their good stretchability, and are widely used as high-grade fabrics for knitted underwear and outerwear; however, cotton elastic knitted fabrics are relatively light and thin, and their strength is poor. Therefore, the washability is not good; compared with pure cotton knitted fabrics, cotton elastic knitted fabrics are not soft enough, and the dyeing fastness of elastic yarns is very poor, which makes the fabrics easy to fade and fade after repeated washing. Pilling, poor appearance after washing, these shortcomings have affected the market of cotton elastic knitted fabrics to a certain extent, and reduced the grade of fabrics. Aiming at the ubiquitous shortcomings of poor hand feeling, poor color and ap...

AI Technical Summary

Problems solved by technology

[0006] Among the processes adopted by domestic manufacturers, most of them improve the hand feeling of elastic knitted fabrics by improving raw materials (such as improved elastic yarn) and mechanical finishing (such as pre-shrinking), and improve the elasticity by increasing the pre-setting process. Dimensional stability and resilience of knitted fabrics, the general process is: weaving→presetting→boiling and bleaching→biological enzyme washing→dyeing→dehydration→opening→drying→setting→preshrinking, but the cotton elastic knitted fabric after finishing The washability and size retention of the hand feel are poor; after the fabric is washed with biological enzymes and pre-shrunk, the surface hairiness is less, although the hand feel is improved, but because the strength of the fabric itself is not good, the excessive use of biological enzymes will make the The strength is worse; and because it cannot be produced by resin, the color retention, dimensional stability and appearance after washing cannot be guaranteed; in addition, during the process of rope processing, the knitted fabric has been subjected to a long period of time in the dyeing vat. After mechanical stretching and friction, the elasticity of the elastic yarn is damaged, causing the elastic residual elongation of the elastic knitted fabric to be large, and it is easy to cause deformation after repeated washing; moreover, it is difficult to control the elastic knitted fabric by ordinary mercerizing machines. It is easy to cause broken wires or creases, which will affect the effect of the cloth surface