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A natural dyeing method of yellow modal fabric

A dyeing method and fabric technology, which is applied in the field of natural dyeing of yellow modal fabrics, can solve the problems of reducing added value, printing and dyeing wastewater, threats to human health, etc., and achieve uniform and stable colors, increase added value, and elegant color styles.

Active Publication Date: 2015-08-05
浙江绍兴中环印染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is precisely because Modal fabrics are known for their natural greenness and environmental protection. At present, most of the chemical dyes used in dyeing not only bring printing and dyeing wastewater, but some chemical dyes also pose a potential threat to human health. The natural and simple style of the fabric cannot complement each other, which reduces its added value to a certain extent

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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:

[0018] (1) Pretreatment: Soak the modal fabric in a hydrogen peroxide solution with a mass fraction of 30% for 35 minutes, add 0.5g / L degreasing agent, soak at 80°C, and wash with water after soaking;

[0019] (2) Drying: Dry the washed modal fabric at a temperature of 70°C until it is 70% dry;

[0020] (3) Dyeing: Put the dried modal fabric into water at 20°C, the liquor ratio is 1:15, adjust the pH to 6, raise the temperature to 35°C, add 3% (o.w.f) of natural gardenia yellow dye, and 2g anti-wrinkle agent / L, keep warm for 15min, then cool down to room temperature and keep for 15min, take it out and wash with water; the natural gardenia yellow dye is to take 20g of crushed gardenia, heat and reflux with 50% ethanol at 70°C for 6h, add 13g / L to the reflux liquid The alum solution was prepared by heating at 40°C for 40min and stirring at a speed of 600r / mi...

Embodiment 2

[0025] A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:

[0026] (1) Pretreatment: Soak the modal fabric in a hydrogen peroxide solution with a mass fraction of 30% for 45 minutes, add 1.0 g / L of degreasing agent, soak at 100°C, and wash with water after soaking;

[0027] (2) Drying: Dry the washed modal fabric at a temperature of 80°C until it is 80% dry;

[0028] (3) Dyeing: Put the dried modal fabric into water at 25°C, the liquor ratio is 1:25, adjust the pH to 6.5, raise the temperature to 45°C, add 3% (o.w.f) of natural gardenia yellow dye, and 4g anti-wrinkle agent / L, keep warm for 20min, then cool down to room temperature and keep for 20min, take it out and wash it with water; the natural gardenia yellow dye is to take 20g of crushed gardenia, heat and reflux with 60% ethanol at 100°C for 5h, add 16g / L to the reflux liquid The alum solution was prepared by heating at 50°C for 30min and stirring at a speed...

Embodiment 3

[0033] A kind of natural dyeing method of yellow modal fabric is characterized in that comprising the following steps:

[0034] (1) Pretreatment: Soak the modal fabric in a hydrogen peroxide solution with a mass fraction of 30% for 40 minutes, add 0.8g / L degreasing agent, soak at 90°C, and wash with water after soaking;

[0035] (2) Drying: Dry the washed modal fabric at a temperature of 75°C until it is 7.5% dry;

[0036] (3) Dyeing: Put the dried modal fabric into water at 23°C, the liquor ratio is 1:20, adjust the pH to 6.3, raise the temperature to 40°C, add 3% (o.w.f) of natural gardenia yellow dye, and 3g of anti-wrinkle agent / L, keep it warm for 18 minutes, then lower it to room temperature and keep it for 18 minutes, take it out and wash it with water; the natural gardenia yellow dye is to take 20 g of crushed gardenia, heat and reflux with 55% ethanol at 70 ° C for 5.5 hours, add 15 g / L of alum solution was prepared by heating at 45°C for 35 minutes and stirring at...

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 natural dyeing method of a yellow modal fabric. The natural dyeing method comprises six stages as follows: pretreatment, drying, dyeing, water washing, color fixing and after finishing, wherein a natural gardenia yellow dye made from gardenia and ethanol through heating reflux is adopted in the dyeing process; water washing is carried out twice at different temperatures in the water washing stage, so that the coloring fastness of the dye is guaranteed. The natural dyeing method provided by the invention has the advantages that on one hand, the method of dyeing the modal fabric by using the natural dye can not cause pollution to the environment and has no harm on the human body, and also is in accordance with the color styles of nature, simplicity and elegance of the modal fabric, and therefore, the ecological environmental protection performance of the modal fabric is improved, the additional value of the modal fabric products is greatly increased, the requirements of people for healthy clothes are met and great practical value of the method is reflected, and on the other hand, the effects of quick coloring and even and stable color are achieved.

Description

technical field [0001] The invention relates to a dyeing and finishing process for fabrics, in particular to a natural dyeing method for yellow modal fabrics. Background technique [0002] The raw material of Modal fiber is produced in European shrubs. It is made of wood pulp and then processed through a special spinning process. It is a kind of cellulose fiber, so it belongs to cellulose fiber like cotton and is a pure natural fiber. Modal products are mostly used in the production of underwear because of their good softness and excellent hygroscopicity but poor fabric stiffness. But it is precisely because Modal fabrics are known for their natural greenness and environmental protection. At present, most of the chemical dyes used in dyeing not only bring printing and dyeing wastewater, but some chemical dyes also pose a potential threat to human health. The natural and simple style of the fabric cannot complement each other, which reduces its added value to a certain exten...

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): D06P1/34D06P3/60D06L1/16D06P5/04D06P5/02D06M11/50D06M101/06
Inventor 王斌
Owner 浙江绍兴中环印染有限公司
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