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Method for dyeing of loose fibre with natural dye

A technology of natural dyes and loose fibers, used in dyeing, fiber processing, textiles and papermaking, etc., can solve problems such as adverse health, environmental pollution, and toxic residues, and achieve good color fastness and a wide range of applications.

Active Publication Date: 2011-10-19
东阳市神农纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of raw materials for daily necessities such as clothing and bed sheets mostly adopts the process of weaving first and then dyeing. This method is prone to defective products during yarn dyeing and piece dyeing.
Chinese patent CN-91112719, patent application CN-00103414 and CN-1397681 disclose some dyeing methods of cotton loose fibers, but these patents use reactive dyes or vat dyes to dye, and these methods are used to dye loose fibers. Reactive dyes or vat dyes are used in the dyeing process, and chemical fixing agents containing toluene are used in the color fixing process, which makes it very difficult to treat the sewage generated in the production process, causing environmental pollution, and there will be stains on the dyed fibers There are toxic residues, and using these fibers to make underwear, sheets and other personal products is also very harmful to human health

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

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Effect test

Embodiment 1

[0011] In this embodiment, cotton fibers are dyed purple with natural dyes. Put the cotton fiber into the dye vat first, raise the temperature to 100°C, and simmer for 30 minutes to remove the fat, sugar and other components contained in the fiber. Dissolve alum and bone glue according to the proportion of 3.5% of the fiber mass, heat the solution to 50°C, put the boiled cotton fiber into the solution with a bath ratio of 1:20, raise the temperature to 80°C, and keep it warm for 20 minutes.

[0012] In this example, the natural dye TRJZ from Shanghai Jiezhijing Co., Ltd. is selected, and its main components are catechol and flavonoids extracted from catechu and other plants. Dissolve TRJZ in water, put the mordant cotton fiber into the vat at a bath ratio of 1:2 (), heat it up to 80°C at a rate of 2°C per minute, keep it warm for 30 minutes, and carry out dyeing. Wash the dyed cotton fiber fully with cold water, then put it in hot water at 60°C for 10-20 minutes, put the wash...

Embodiment 2

[0015] In this embodiment, the rabbit hair fiber is dyed black with natural dyes. First, the rabbit hair fiber is smelted to remove impurities, and the ferrous sulfate and bone glue are dissolved in a ratio of 3.5% of the fiber mass. The solution is heated to 50°C, and the smelted rabbit hair fiber is put into the solution. The ratio is 1:20, the temperature is raised to 80°C, and the temperature is kept for 20 minutes.

[0016] In this embodiment, the natural dyestuff adopted is the natural dyestuff TRWB of Shanghai Jiezhijing Company, and TRWB is dissolved in water, and the rabbit hair fiber through mordant is put into the vat according to the bath ratio of 1:20, and the rate is 2 per minute. The temperature was raised to 80° C. at a rate of ° C. and kept at a temperature of 30 minutes for dyeing. Wash the dyed rabbit hair fiber fully with cold water, then put it into hot water at 60°C for 10-20 minutes, put the washed rabbit hair fiber into the solution dissolved in bone g...

Embodiment 3

[0018] The present embodiment is to dye cotton fiber with indigo dye. After the pre-treatment of scouring and mordant dyeing, the cotton fiber is put into the prepared indigo solution and kept warm for 25 minutes at about 30°C. After taking it out, put it in the open air until its color turns blue, or use 3 g / L hydrogen peroxide Keep it blue. Afterwards, the cotton fibers can be cold washed and soaped.

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 provides a method for dyeing a loose fiber by a natural dye, which comprises the steps of carrying out boiling, mordant dyeing, dyeing and fixation on the loose fiber. The method selects the natural dyes with corresponding variety and amount according to the dyeing color and the depth of the dyeing to dissolve in water according to a bath ratio of 1 to 20; putting the fiber through mordant dyeing into a cylinder; raising the temperature from 30 to 100 DEG C with a speed of 2 DEG C per minutes, preserving the temperature for 30 minutes and then carrying out dyeing. The method uses the natural materials during the manufacture technique of dyeing; the content of the contaminations in the waste water generated during the manufacture process is very low, thus having the advantage on sewage treatment and according with the national environment protection policy compared with the traditional technique. The invention can be applied to various loose fiber dyeing like animal fibers, plant fibers and chemical fibers, has a broad application range and the fiber dyed by using the natural dye, has excellent color brilliance and color fastness.

Description

technical field [0001] The invention relates to a method for dyeing loose fibers, in particular to a method for dyeing loose fibers with natural dyes. Background technique [0002] With the enhancement of national policies and public awareness of environmental protection, the textile printing and dyeing industry is facing enormous challenges. At present, the production of raw materials for daily necessities such as clothing and bed sheets mostly adopts the process of weaving first and then dyeing. This method is prone to defective products during yarn dyeing and piece dyeing. Chinese patent CN-91112719, patent application CN-00103414 and CN-1397681 disclose some dyeing methods of cotton loose fibers, but these patents use reactive dyes or vat dyes to dye, and these methods are used to dye loose fibers. Reactive dyes or vat dyes are used in the dyeing process, and chemical fixing agents containing toluene are used in the color fixing process, which makes it very difficult to...

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 Patents(China)
IPC IPC(8): D06P1/34D06P5/02D06M11/55D06M15/15
Inventor 张永成
Owner 东阳市神农纺织品有限公司
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