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Method of dyeing cotton fabric with natural plant dye

A technology of natural plant dyes and cotton fabrics, applied in dyeing, textiles and papermaking, fiber treatment, etc., can solve the problems of poor color reproducibility, low affinity, and low dyeing rate of dyed products, and achieve increased dyeing percentage, Strong action, easy biodegradable effect

Inactive Publication Date: 2018-11-27
JINJIANG CITY LONGSHENG KNITTING PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical defects existing in the prior art, the present invention provides a method for dyeing cotton fabrics with natural plant dyes, which not only solves the problems of low affinity and low dyeing rate of natural plant dyes to cotton products, but also solves the problem of the color of dyed products. Problems of poor reproducibility and poor fastness

Method used

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  • Method of dyeing cotton fabric with natural plant dye

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] The present embodiment provides a kind of method for dyeing cotton fabric with natural vegetable dye, specifically comprises the following steps:

[0019] (1) Pretreatment: first place the cotton fabric in the main tank of the overflow dyeing machine at normal temperature and pressure, add tea saponin to bleach the cotton, the dosage of tea saponin is 5% (owf), and then press 3.0℃ / min Heating rate Raise the temperature to 98°C and soak for 30 minutes, cool down and drain;

[0020] (2) Pre-mordanting: Add alum solution to the pre-treated cotton fabric in step (1) within 5 minutes, the liquor ratio is 1:10, the dosage of alum is 5g / L, and then heat up at a heating rate of 2°C / min Heat to 40°C and keep warm for 30 minutes, drain the liquid after treatment and collect the pre-mordant liquid;

[0021] (3) Dyeing: Add 2% (owf) cocoa plant dye to the cotton fabric after pre-mordanting in step (2) within 5 minutes, the bath ratio is 1:15, stir and run for 5 minutes, and then c...

Embodiment 2

[0026] The present embodiment provides a kind of method for dyeing cotton fabric with natural vegetable dye, specifically comprises the following steps:

[0027] (1) Pre-treatment: first place the cotton fabric in the main cylinder of the overflow dyeing machine at normal temperature and pressure, add tea saponin to bleach the cotton, the dosage of tea saponin is 8% (owf), and then press 2.5°C / min Heating rate Raise the temperature to 100°C and soak for 40 minutes, cool down and drain;

[0028] (2) Pre-mordanting: Add alum solution to the pre-treated cotton fabric in step (1) within 5 minutes, the bath ratio is 1:15, the dosage of alum is 6.5g / L, and then the heating rate is 1°C / min Raise the temperature to 40°C and keep it warm for 40 minutes, drain the liquid after treatment and collect the pre-mordant liquid;

[0029] (3) Dyeing: Add 1% (owf) gardenia plant dye to the pre-mordanted cotton fabric in step (2) within 5 minutes, the bath ratio is 1:12, stir well and run for 6 ...

Embodiment 3

[0034] The present embodiment provides a kind of method for dyeing cotton fabric with natural vegetable dye, specifically comprises the following steps:

[0035] (1) Pretreatment: first place the cotton fabric in the main tank of the overflow dyeing machine at normal temperature and pressure, add tea saponin to bleach the cotton, the dosage of tea saponin is 6.5% (owf), and then press 3.0℃ / min Heating rate Raise the temperature to 95°C and soak for 45 minutes, cool down and drain;

[0036](2) Pre-mordanting: Add alum solution to the pre-treated cotton fabric in step (1) within 10 minutes, the liquor ratio is 1:30, the dosage of alum is 8g / L, and then heat up at a heating rate of 1°C / min to 45°C and keep warm for 35 minutes, drain the liquid after treatment and collect the pre-mordant liquid;

[0037] (3) Dyeing: Add 0.5% (owf) cocoa plant dye and 1.0% (owf) gardenia plant dye to the pre-mordanted cotton fabric in step (2) within 8 minutes, the bath ratio is 1:15, stir Run ev...

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Abstract

The invention relates to a method of dyeing a cotton fabric with a natural plant dye. The method comprises the following specific steps: pre-treatment; pre-mordant dyeing; dyeing; post-mordant dyeing;color fixing; and dehydrating and drying, wherein the dyeing step comprises the steps: uniformly stirring the natural plant dye for 5-8 min, then adding composed anhydrous sodium sulphate to be stirred uniformly for 10-15 min, and finally, adding cellulase, raising the temperature to 55-60 DEG C and keeping the temperature for 30-60 min; the post-mordant dyeing step comprises the steps: adding aferric sulfate solution for 10-15 min, then adding a alums solution to be uniformly stirred for 3-10 min, raising the temperature to 60-65 DEG C and keeping the temperature for 30-35 min; and the color fixing step comprises the steps: firstly, adding a sodium carbonate solution for 3-5 min, then adding ethanol, and raising the temperature to 60-65 DEG C and keeping the temperature for 30-40 min. By adopting the technical scheme, the problem that the natural plant dye is low in affinity and low dyeing rate to a cotton product is solved, and meanwhile, the problem that the dyed product is poor in color reproducibility and poor in fastness is solved, too.

Description

technical field [0001] The invention relates to the technical field of dyeing and finishing of cotton fabrics, in particular to a method for dyeing cotton fabrics with natural vegetable dyes. Background technique [0002] Synthetic dyes are bright in color, complete in color spectrum, washable and light-resistant, and are the main dyes of textiles. However, various pollutions such as smog, benzene, and formaldehyde came one after another, and people began to worry more and more about the application of synthetic dyes. Since the advent of synthetic dyes, plant dyes, which have gradually faded out of the dye market, have been picked up and valued by people, and the term ecological textiles has also begun to appear. The so-called ecological textiles refer to textiles that do not produce or contain any substances that may cause harm to human health and have adverse effects during the entire process of raw materials, production, consumption and disposal. Many synthetic dyes wil...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/60D06P1/44D06P1/46D06P1/673D06P5/10D06M13/00
CPCD06M13/005D06P1/34D06P1/445D06P1/46D06P1/67341D06P1/6735D06P3/60D06P5/002D06P5/10
Inventor 黄燕珠刘志军杨江源黄丽珍谢法志刘坤
Owner JINJIANG CITY LONGSHENG KNITTING PRINTING & DYEING CO LTD