Method for dyeing and finishing polyester-spandex fabric

A processing method and technology of polyester spandex, applied in the field of dyeing and finishing of polyester spandex fabrics, can solve the problems of poor dyeing reproducibility, poor color fastness, elasticity and strength damage of spandex, and achieve full hand feeling, distinctive features and good elasticity Effect

Active Publication Date: 2013-06-12
SHENGHONG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of poor dyeing reproducibility and color fastness in the dyeing and finishing process of polyester spandex fabrics in the prior art...

Method used

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  • Method for dyeing and finishing polyester-spandex fabric
  • Method for dyeing and finishing polyester-spandex fabric
  • Method for dyeing and finishing polyester-spandex fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: pretreatment stage

[0032] Spandex and polyester fibers use a lot of fiber oil and winding oil in the spinning process, including some silicon-containing additives. In the weaving process of chemical fiber gray cloth, in order to increase the smoothness of the warp yarn surface, improve the wear resistance and strength, and reduce the phenomenon of end breakage, the warp yarn generally needs to be sized and oiled before weaving. If the pre-treatment is not cleaned, it will easily form color spots and tar spots that are difficult to remove together with the precipitated polyester oligomers during dyeing.

[0033] 1.1 cold stack

[0034] Process prescription (g / L) and conditions are as follows:

[0035]

[0036] In the above process, the chelating dispersant TF-510C can prevent equipment and fabrics from being stained, has the functions of scale inhibition and scale removal, and has good compatibility with desizing liquid. Used in combination with Quy...

Embodiment 2

[0044] Example 2: Pre-typing

[0045]Because this kind of cloth contains spandex, it will shrink obviously due to heat and humidity during the dyeing and finishing process. Therefore, this kind of cloth should be pre-shaped before dyeing to prevent it from affecting the dyeing effect due to serious shrinkage during the dyeing process. The purpose of pre-shaping is to eliminate the internal stress of spandex, so that the quality indicators such as fabric width, square meter weight and fabric elasticity are in a stable state, which is easy to control and will not change greatly in subsequent processes. If the presetting temperature is too high and the time is too long, the fabric will feel hard and yellow, and the strength and elasticity of the fabric will be damaged; if the temperature is too low and the time is too short, the wrinkle resistance will be poor and the effect will not be achieved, so strict Control the presetting process. When ordering, more than a dozen units of...

Embodiment 3

[0050] Example 3: Dyeing

[0051] Due to the characteristics of the spandex fiber itself, the dye tends to stick to the surface of the fiber during the dyeing process of the fabric and cannot enter the interior of the fiber, resulting in poor color fastness of the fabric; The stretch effect of the fabric.

[0052] The main purpose of polyester / spandex fabric dyeing is to reduce the tension on the fabric under high temperature conditions. Otherwise, the fabric will be stretched and its elastic recovery will be greatly affected. Because of this, overflow jet dyeing machines are often used to keep the fabric in a relaxed state while under pressure and avoid fabric shrinkage.

[0053] Polyester fiber must be dyed at high temperature and high pressure, while spandex is not resistant to high temperature, especially under acidic or alkaline conditions with high temperature and long time, it is easy to cause brittle damage of spandex yarn, decrease in strength, and cause broken yarn...

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Abstract

The invention discloses a method for dyeing and finishing a polyester-spandex fabric. Warp 75D polyester filament and 40D spandex filament twisted yarns and weft 300D polyester filament and 40D spandex filament twisted yarns are used as raw materials. The method comprises the following steps of: pretreating; presetting; dyeing; performing reduction clearing; finishing after thermal setting; and detecting, batching and packaging. The method overcomes the defects in the prior that the polyester-spandex fabric is poor in dyeing reproducibility during dyeing and finishing and poor in color fastness and the elasticity and the strength of the spandex are damaged at high temperature. The polyester-spandex fabric has the characteristics of high strength, good elasticity, stable size, strong feel of fur, full handfeel, mild gloss and good color fastness and is stiff and smooth.

Description

technical field [0001] The invention relates to a dyeing and finishing method for fabrics, in particular to a dyeing and finishing method for polyester spandex fabrics. Background technique [0002] With the continuous improvement of living standards, people have more and more functional requirements for clothing fabrics. For traditional winter clothing that only has the function of keeping warm, its bloated, cumbersome and lack of novelty style has been difficult to satisfy consumers' consumption concepts. Moreover, with the frequent occurrence of warm winters, people are eager for more novel and dynamic winter clothing fabrics. Nowadays, elastic fabrics containing spandex are very popular in domestic and foreign markets. This kind of products has high elasticity and excellent rebound performance, soft hand feeling, comfortable to wear and can show the beauty of the body. In addition, it is easy to absorb sweat and will not generate static electricity. , so that it has alw...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/39D06P3/85D06P1/44D06P1/653D06P1/673D06L1/14D06M11/00D06M11/50D06P5/02D06C7/02D06M101/32D06M101/38
Inventor 唐俊松钱琴芳朱冬兰
Owner SHENGHONG GRP CO LTD
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