One-bath dyeing process of brocade cotton fabric

The technology of nylon-cotton fabric and bath method is applied in the field of dyeing and finishing, which can solve the problems of difficult adjustment of process conditions, unsatisfactory homochromatic effect, etc., and achieve the effects of convenient process operation, shortening of dyeing time and cost saving.

Active Publication Date: 2019-03-22
JINJIANG LONGXINGLONG DYEING & WEAVING INDALCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different structures of nylon and cotton, they show different dyeing properties to reactive dyes, and various process factors have different effects on the dyeing of nylon and cotton, and often have problems such as unsatisfactory same-color effects and difficult control of process conditions.

Method used

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  • One-bath dyeing process of brocade cotton fabric

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Comparison scheme
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Embodiment 2

[0026] The present embodiment provides a kind of one-bath dyeing process of polyamide cotton fabric, taking dyeing black as an example, specifically comprising the following steps:

[0027] 1) Cold pile desizing: the gray cloth is rolled into the medicine tank of the cold pile machine to run at a speed of 50m / min, and the temperature of the medicine tank is kept at 85℃~95℃. After the predetermined time is reached, the rolls are unrolled immediately, and the slurry and residual chemicals carried by the cloth surface are thoroughly cleaned by a washing machine for dyeing. Wherein: the chemical consumption of cold pile desizing is: 32% sodium hydroxide 8g / l, tea saponin 8g / l, degreasing agent 2g / l.

[0028] 2) Dyeing: put the Nylon-cotton fabric after the cold batch desizing treatment into the dyeing vat of the air-flow dyeing machine, the bath ratio is 1:5, then add Anoky NC type reactive dyes to the dyeing vat, and wait for the reactive dyes to dissolve evenly. Add sodium sulf...

Embodiment 3

[0038] The present embodiment provides a kind of one-bath dyeing process of polyamide cotton fabric, taking dyeing maroon as an example, specifically comprising the following steps:

[0039] 1) Cold pile desizing: the gray cloth is rolled into the medicine tank of the cold pile machine to run at a speed of 45m / min, and the temperature of the medicine tank is kept at 85℃~95℃. After the predetermined time is reached, the rolls are unrolled immediately, and the slurry and residual chemicals carried by the cloth surface are thoroughly cleaned by a washing machine for dyeing. Wherein: the chemical consumption of cold pile desizing is: 32% sodium hydroxide 8.5g / l, tea saponin 9g / l, degreasing agent 5g / l.

[0040] 2) Dyeing: Put the Nylon / cotton fabric that has undergone cold-batch desizing treatment into the dye vat of the overflow dyeing machine with a liquor ratio of 1:10, then add Anoky NC reactive dyes to the dye vat, and wait for the reactive dyes to dissolve evenly Add sodium...

Embodiment 4

[0050] The present embodiment provides a kind of one-bath dyeing process of polyamide cotton fabric, taking dyeing dark blue as an example, specifically comprising the following steps:

[0051] 1) Cold pile desizing: the gray cloth is rolled into the medicine tank of the cold pile machine to run at a speed of 48m / min, and the temperature of the medicine tank is kept at 85℃~95℃. After the predetermined time is reached, the rolls are unrolled immediately, and the slurry and residual chemicals carried by the cloth surface are thoroughly cleaned by a washing machine for dyeing. Wherein: the chemical consumption of cold pile desizing is: 32% sodium hydroxide 5g / l, tea saponin 8g / l, degreasing agent 4g / l.

[0052]2) Dyeing: Put the Nylon / cotton fabric after the cold batch desizing treatment into the dye vat of the overflow dyeing machine, the bath ratio is 1:10, then add Anoky NC reactive dye to the dye vat, and wait for the reactive dye to dissolve evenly Add sodium bicarbonate an...

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Abstract

The invention relates to one-bath dyeing process of brocade cotton fabric. The process comprises the following steps: putting the brocade cotton fabric subjected to cold-dwell desizing treatment intoa dye vat, wherein a bath ratio is 1 to (5-10), adding Anoky NC type reactive dye, and sequentially adding anhydrous sodium sulphate and an alkaline agent after the reactive dye is uniformly dissolved, slowly heating up to 98-100 DEG C and carrying out heat preservation for 50-60min, then cooling and draining, sequentially washing and soaping, then washing again, and discharging the fabric. The reactive dye used in the process contains a quaternary ammonium pyridine formic acid active group, and the pH value of a dyeing bath gradually changes from alkalinity to acidity as the rise of temperature, and the dye-uptake of the dye changes along with the change of the pH; when being alkaline, the dye bath reacts with a hydroxyl group in cotton fibers, so that a covalent bond with a firm structure is formed, and cotton dyeing is further realized; when being gradually turned to be acid, the dye bath reacts with an amino group in chinlon, so that a covalent bond with a firm structure is formed,and chinlon dyeing is further realized; therefore, the brocade cotton fabric is not only good in color and cloth surface effect, but also has the fastness which is in line with customer requirements.

Description

technical field [0001] The invention relates to the technical field of dyeing and finishing, in particular to a one-bath dyeing process of nylon and cotton fabrics. Background technique [0002] Nylon-cotton fabric not only has the good moisture absorption and air permeability of cotton fiber, but also has the advantages of good elasticity and high wear resistance of nylon. It is widely used in various clothing fabrics and is deeply loved by consumers. However, since nylon and cotton fibers have different structures and different dyeing properties, dyeing often brings problems such as color registration difficulties and long process flow to enterprises. In terms of dyeing technology, the best dyeing dyes for nylon are acid dyes, but under acidic conditions, reactive dyes basically do not color cotton fibers, and reactive dyes must be dyed and fixed under alkaline conditions. It will have a significant impact on the dyeing and coloring of nylon. Under alkaline conditions, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/00D06P5/02D06P3/82
CPCD06P1/0032D06P1/38D06P1/6735D06P3/8219D06P5/02
Inventor 白杨
Owner JINJIANG LONGXINGLONG DYEING & WEAVING INDALCO
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