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Natural dye dyeing process for worsted wool

A natural dye and process technology, applied in the field of natural dye dyeing process, can solve the problems of poor light fastness to soaping, poor affinity between natural dyes and wool fiber, harmful environment, etc., achieve uniform color, improve dyeing weight Revelation, affinity-enhancing effect

Inactive Publication Date: 2021-02-12
ZHANGJIAGANG YANGZI DYEING & FINISHING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the production process of synthetic dyes, objects harmful to the environment will be produced, which have to be dumped into rivers, pool eaves or the air, causing pollution to the environment. At present, the problems facing mankind are: exhaustion of energy resources; serious environmental pollution
However, many natural dyes have poor color fastness, especially poor light fastness and soaping fastness.
The affinity between natural dyes and wool fibers is poor, resulting in low dyeing rate and poor dyeing reproducibility

Method used

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  • Natural dye dyeing process for worsted wool
  • Natural dye dyeing process for worsted wool

Examples

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Embodiment 1

[0027] A process for dyeing worsted wool with natural dyes, comprising the following steps:

[0028] 1) Top pretreatment, add osmotic defoamer and degreasing agent at room temperature, run for 10 minutes, then add soda ash, then raise the temperature to 50°C and keep it warm for 20 minutes, then wash with overflow water for 10 minutes, and drain. Wherein the osmotic defoamer is ALBAFLOW FFW, and its consumption is 0.5mL / L; the degreaser is TISSOCYL RC9-C, and its consumption is 1mL / L; the soda ash consumption is 0.3g / L.

[0029] 2) For wool top dyeing, add osmotic defoamer at room temperature and run for 10 minutes; add filtered natural dye for another 20 minutes, then raise the temperature to 95°C at 2°C / min, keep it warm for 60 minutes, and then heat it at 2°C / min to cool down to 35°C, wash with overflow water for 10 minutes, and drain. Wherein the osmotic defoamer is ALBAFLOW FFW, and its dosage is 0.5mL / L. Described natural dyestuff is olive green, and its consumption i...

Embodiment 2

[0035] A process for dyeing worsted wool with natural dyes, comprising the following steps:

[0036] 1) Top pretreatment, add osmotic defoamer and degreasing agent at room temperature, run for 10 minutes, then add soda ash, then raise the temperature to 50°C and keep it warm for 30 minutes, then wash with overflow water for 10 minutes, and drain. Wherein the osmotic defoamer is ALBAFLOW FFW, and its consumption is 0.5mL / L; the degreaser is TISSOCYL RC9-C, and its consumption is 1mL / L; the soda ash consumption is 0.3g / L.

[0037] 2) For wool top dyeing, add osmotic defoamer at room temperature and run for 10 minutes; add filtered natural dye for another 20 minutes, then raise the temperature to 95°C at 2°C / min, keep it warm for 30 minutes, and then heat it at 2°C / min to cool down to 35°C, wash with overflow water for 10 minutes, and drain. Wherein said osmotic defoamer is ALBAFLOWFFW, and its consumption is 0.5mL / L. The natural dye is olive green, and its consumption is 0.15...

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Abstract

The invention provides a natural dye dyeing process of worsted wool. The process comprises the following steps: 1) wool top pretreatment: adding a permeation defoamer, a degreaser and soda ash, and keeping the temperature at 50 DEG C for 20-30 minutes; 2) wool top dyeing: adding a permeation defoamer and a dye, keeping the temperature at 90-98 DEG C for 30-60 minutes, and then lowering the temperature to 35 DEG C; 3) iron medium dyeing: adjusting the pH value of a dye bath to be less than 4 at 35 DEG C, adding ferrous sulfate, and keeping the temperature at 40 DEG C for 20-30 minutes; 4) for dark color, dyeing wool tops again, adding a dye, keeping the temperature at 90-98 DEG C for 30-60 minutes, and then lowering the temperature to 35 DEG C; 5) for the dark color, dyeing with an iron medium again, adjusting the pH value of the dye bath to be less than 4 at 35 DEG C, adding ferrous sulfate, and keeping the temperature at 40 DEG C for 20-30 minutes; and 6) soaping: adding a soaping agent for dark color, and keeping the temperature at 70-80 DEG C for 20-30 minutes. According to the natural dye dyeing process of the worsted wool, ferrous sulfate is used as a mordant, affinity betweena natural dye and fibers is enhanced through a mordant dyeing method, dyeing reproducibility is improved, and it is guaranteed that the dyed wool is uniform and consistent in color.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a process for dyeing worsted wool with natural dyes. Background technique [0002] Natural dyes are directly derived from animals and plants, and most of them are relatively safe, mainly referring to plant dyes, such as alizarin, indigo, etc. Animal dyes such as cochineal, lac insects, etc. Natural plant dyes are safe and non-toxic, have environmental protection effects, and have dual effects of dyeing and antibacterial: ellagic acid and polyphenolic compounds contained in plants have antioxidant properties (for example, they have the function of inhibiting bacterial growth against Escherichia coli and Staphylococcus aureus) ); Contains antibacterial active ingredients such as alkaloids, acids, ketones, phenols and tannic acid. The plant structure makes the fabric have good ultraviolet absorption or reflection function, and the ultraviolet transmittance is correspondingly reduced. Natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P1/653D06P1/673D06P3/14
CPCD06P1/34D06P3/14D06P1/6735D06P1/6533
Inventor 季正英王锦鹏宋仁华钱东浩
Owner ZHANGJIAGANG YANGZI DYEING & FINISHING CO LTD
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