Stripping finishing method of woolen dyed fabric

A wool and fabric technology, applied in the field of stripping and finishing of wool dyed fabrics, can solve the problems of difficult stripping of wool reactive dyes and difficult stripping of wool reactive dyes, and achieve excellent stripping effect, high dyeing consistency, The effect of high color rate

Active Publication Date: 2010-10-06
ZHEJIANG HUAFU COLOR TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is basically difficult to strip the color of reactive dyes for wool. Even if the color stripping process is used to add strong ligands to replace the dyes in the dye-Cr(III)-wool coordination compound, it can only be used for acid complex dyes and acid media. The dye improves the stripping rate to 40% to 50%, and it is still difficult to strip the wool with reactive dyes

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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  • Stripping finishing method of woolen dyed fabric
  • Stripping finishing method of woolen dyed fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 (wool bulk fiber)

[0024] Select 170 kg of wool dyed loose fiber (the original red dyeing formula dosage is about 4%), put it into a solution with a liquor ratio of 1:20 at room temperature, add leveling agent ALBEGAL SET 3%, and add a reducing agent after running for 5 minutes Degulin 2%, adjust the pH value to 4.5-5.5 with formic acid, raise the temperature to 90°C and keep it warm for 30 minutes, slowly cool down to 60°C, wash it with water, and then dye it after 2 washes. After stripping, use a DATACOLOR SF600 spectrophotometer to test the K / S value, and the stripping rate is 72%.

Embodiment 2

[0025] Embodiment 2 (wool yarn)

[0026] Select 100 kg of wool dyed yarn (the amount of the original green dyeing formula is about 3%), put it into a solution with a bath ratio of 1:20 at room temperature, add leveling agent ALBEGAL SET 4%, run for 15 minutes and then add reducing agent Degulin 3%, use formic acid to adjust the pH value to 4.5-5.5, raise the temperature to 95°C and keep it warm for 30 minutes, after slowly cooling down to 60°C, wash it with water, and then dye it after 3 washes. The K / S value was tested with a DATACOLOR SF600 spectrophotometer, and the stripping rate was 60%.

Embodiment 3

[0027] Embodiment 3 (wool gray cloth fabric)

[0028] Select 200 kg of wool dyed gray fabric (the original black dyeing formula dosage is about 6%), put it into a solution with a bath ratio of 1:10 at room temperature, add leveling agent ALBEGAL SET 4%, run for 5 minutes, add reducing agent Degu Lin 2%, adjust the pH value to 4.5-6 with formic acid, heat up to 90 degrees and keep warm for 20 minutes, slowly cool down to 60 degrees, wash with water, and dye after 2 washes. The K / S value was tested with a DATACOLOR SF600 spectrophotometer, and the stripping rate was 78%.

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 stripping finishing method of woolen dyed fabric, which comprises the following steps of: wetting dyed woolen fabric, adding reducing agent and ampholytic surface active agent, and treating at high temperature under the acidic condition; and then, cooling and washing by water, wherein the reducing agent is Decrolin, and the ampholytic surface active agent is ALBEGAL SET. The method can be used for stripping return repair after dye, so that the acidic complex dye and acidic medium dye of woolen fiber can be stripped by about 70%, wool reactive dye can be stripped by more than 50%, and color repair can be carried out again.

Description

technical field [0001] The invention relates to the field of textiles, in particular to a method for stripping and finishing wool dyed fabrics. Background technique [0002] With the improvement of people's life and the improvement of consumption level, people pay more and more attention to clothing. Fashion and comfort, health and environmental protection have become synonymous with the times. As a natural protein fiber, wool is noble, elegant, environmentally friendly and comfortable, and the market demand is increasingly strong. At present, neutral dyes, reactive dyes for wool, acid complex dyes, and acid mordant dyes are mostly used in wool dyeing. When wool fabrics are dyed with neutral, acid and acid mordant dyes, sometimes color flowers or dark colors will inevitably occur. Faced with the defective products produced, the factory has only two options: first, over-dyeing dark colors are mostly black, which makes it difficult to sell products; second, strip the original ...

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): D06P5/02D06L3/10D06P5/15D06L4/30
Inventor 蒋永根
Owner ZHEJIANG HUAFU COLOR TEXTILE
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