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Method for pretreating linen-rayon elastic fabric

A linen and elastic technology, which is applied in the field of pretreatment of linen and rayon elastic fabrics, can solve problems such as cumbersome procedures, reduced fabric strength, and increased weight loss rate of flax fibers, so as to improve the microstructure, improve the color difference, and increase the dyeing rate. Effect

Inactive Publication Date: 2017-11-03
ANHUI YAYUAN PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the dyeing and finishing process of this kind of product, there are always problems such as large loss of flax fiber weight and serious reduction in fabric strength.
The main reason for this problem is that the cohesion of flax and rayon blended yarn is poor. During the processing, after a long period of caustic soda scouring, sodium hypochlorite bleaching, hydrogen peroxide bleaching and other processes, the flax fiber is degummed and some flax fibers are degummed. The symbiosis is effectively removed, and the splitting degree of the flax fiber is gradually increased. At the same time, the weight loss rate of the flax fiber is also increased, and the strength loss of the fabric is relatively large. Often, the phenomenon of downgrading or unqualified strength becoming a waste product occurs due to the large strength loss. , and the process is cumbersome and the processing time is long
[0003] People have reduced the weight loss of flax fiber and the loss of fabric strength by improving chlorine bleaching and hydrogen peroxide bleaching processes, but the effect is not obvious

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A pretreatment method for linen rayon elastic fabrics, comprising the steps of singeing, deboiling, and bleaching, wherein deboiling is deboiling with compound enzymes, and the compound enzymes are amylase, xylanase, and pectinase , cellulase.

Embodiment 2

[0017] A pretreatment method for linen rayon elastic fabric, comprising the steps of singeing, deboiling, and bleaching;

[0018] Among them, the singeing temperature is 900°C, the vehicle speed is 100m / min, four burners are used, two positive and two reverse singeing;

[0019] The specific operation of deboiling is as follows: immerse the singeed linen rayon elastic fabric in the slurry, the bath ratio is 1:20, heat up to 55°C, keep it warm for 60min, wash it with water at 95°C for 6min, and then use it at 85°C. ℃ water for 6 minutes, then fully washed with cold water, and rolled dry;

[0020] The slurry includes: amylase 0.6g / L, xylanase 0.4g / L, pectinase 1.7g / L, cellulase 0.8g / L, penetrant JFC 0.4g / L, the pH of the slurry=4.5, wherein , adjust the pH value of slurry with acetic acid;

[0021] The specific operation of bleaching is: soak the deboiled linen rayon elastic fabric with oxygen bleaching solution, the liquor ratio is 1:25, heat up to 40°C, dip twice and roll, st...

Embodiment 3

[0024] A pretreatment method for linen rayon elastic fabric, comprising the steps of singeing, deboiling, and bleaching;

[0025] Among them, the singeing temperature is 1000°C, the vehicle speed is 80m / min, four burners are used, two positive and two reverse singeing;

[0026] The specific operation of deboiling is: immerse the singeed linen rayon elastic fabric in the slurry, the bath ratio is 1:25, heat up to 45°C, keep it warm for 80min, wash it with water at 90°C for 10min, and then use it at 80°C. Wash in water at ℃ for 10 minutes, then fully wash with cold water, and squeeze dry;

[0027] The slurry includes: amylase 0.5g / L, xylanase 0.6g / L, pectinase 1.5g / L, cellulase 1.2g / L, penetrant JFC 0.3g / L, the pH of the slurry=5, wherein , adjust the pH value of slurry with acetic acid;

[0028] The specific operation of bleaching is: soak the deboiled linen and rayon elastic fabric with oxygen bleaching solution, the bath ratio is 1:20, heat up to 50°C, dip twice and roll, s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a method for pretreating a linen-rayon elastic fabric, which includes the following steps: singeing, desizing and scouring and bleaching, wherein desizing and scouring are desizing and scouring by compound enzyme, and the compound enzyme consists of amylase, xylanase, pectinase and cellulase. By choosing the suitable enzymes to be compounded and adopting an appropriate desizing and scouring process, the method can improve the microstructure of fibers in the linen-rayon elastic fabric while ensuring that the linen-rayon elastic fabric has appropriate elastic and mechanical properties, preparing for later dyeing, consequently, the dye uptake of the fabric is increased, moreover, the shading problem of linen fibers and rayon fibers is improved, and the homochromatism of the fabric is increased; since suitable bleaching treatment is adopted, while the fabric is bleached, the elasticity and mechanical strength of the fabric cannot be decreased, furthermore, the treatment period is short, the process is simple, and the method is convenient to operate.

Description

technical field [0001] The invention relates to the technical field of textile dyeing, in particular to a pretreatment method for linen rayon elastic fabric. Background technique [0002] The linen rayon elastic fabric is made of flax hemp fiber after impurity removal, degumming and other fiber processing, and rayon is spun and woven on cotton spinning equipment. In order to ensure that the flax content of the finished product after dyeing and finishing is more than 50%, the blending ratio is generally 55% of flax fiber and 45% of rayon fiber. In the dyeing and finishing process of this product, there are always problems such as a large loss of flax fiber weight and a serious reduction in fabric strength. The main reason for this problem is that the cohesion of flax and rayon blended yarn is poor. During the processing, after a long period of caustic soda scouring, sodium hypochlorite bleaching, hydrogen peroxide bleaching and other processes, the flax fiber is degummed and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M16/00D06L1/16D06L4/12D06L4/13D06C9/02D06M101/06
CPCD06C9/02D06L1/16D06M16/003D06M2101/06D06L4/12D06L4/13
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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