A kind of method for the same color dyeing of polyester-cotton fabric with indigo dye

An indigo dye and same-color dyeing technology, which is applied in the field of dyeing and finishing, can solve the problems of single color, dull cloth surface, and difficult dyeing of the same color, and achieve the effects of lowering the dyeing temperature of polyester, avoiding structural changes, and broad application prospects

Inactive Publication Date: 2015-10-14
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that when dyeing polyester-cotton blended or interwoven fabrics, cotton fabrics need to be dyed under low temperature conditions while polyester needs to be dyed under high temperature conditions. Pure cotton denim fabric has dull surface, single color, poor shape retention, wrinkle resistance, poor fastness, and no durability. Provide a two-bath two-step method to dye polyester and cotton, so that polyester and cotton fabrics can obtain good same color Durability and satisfactory dyeing depth, soaping and rubbing fastness of dyed fabrics are greatly improved compared with pure cotton denim fabrics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for same-color dyeing of polyester-cotton fabric with indigo dye, its process is as follows: carry out two-bath two-step dyeing to polyester-cotton fabric with indigo dye, add indigo dye, hydrosulfite, sodium hydroxide in the dyeing bath during the first step dyeing, above-mentioned The solution was heated up to 60°C at a heating rate of 1°C / min, and kept warm for 30 minutes to reduce the indigo dye, and then added carrier benzyl alcohol and sodium chloride to the above reducing solution, and the polyester-cotton fabric (using pure polyester and polyester-cotton fabric according to the quality Dyeing at a ratio of 1:1 to compare its homochromaticity) Put it into the above solution at a bath ratio of 1:30, raise the temperature to 100°C at a heating rate of 2°C / min, and keep it warm for 40 minutes; in the second step of dyeing, add Indigo dye, sodium hydrosulfite and sodium hydroxide, the above solution is heated up to 60°C at a heating rate of 1.5°C / min, and kep...

Embodiment 2

[0024] A kind of preparation method of polyester-cotton denim fabric, its process is as follows: carry out two-bath two-step dyeing to polyester-cotton fabric with indigo dyestuff, add indigo dyestuff, hydrosulfite, sodium hydroxide in the dyeing bath during the first step dyeing, above-mentioned solution with Raise the temperature to 50°C at a heating rate of 2°C / min, keep it warm for 40 minutes to reduce the indigo dye, then add the carrier benzyl alcohol and sodium chloride to the above reducing solution, and put the polyester-cotton fabric into the above solution at a bath ratio of 1:50. Heat up to 90°C at a heating rate of 1°C / min and keep warm for 60 minutes; in the second step of dyeing, add indigo dye, sodium hydrosulfite and sodium hydroxide to the dyeing bath, raise the temperature of the above solution to 50°C at a heating rate of 2°C / min, and keep warm Restore the indigo dye for 30 minutes, put the polyester-cotton fabric dyed in the first step into the above soluti...

Embodiment 3

[0036] A kind of preparation method of polyester-cotton denim fabric, its process is as follows: carry out two-bath two-step dyeing to polyester-cotton fabric with indigo dyestuff, add indigo dyestuff, hydrosulfite, sodium hydroxide in the dyeing bath during the first step dyeing, above-mentioned solution with Raise the temperature to 40°C at a heating rate of 1°C / min, keep it warm for 30 minutes to reduce the indigo dye, then add the carrier JYK POW and sodium chloride to the above reducing solution, put the polyester-cotton fabric into the above solution at a bath ratio of 1:20, and Raise the temperature to 85°C at a heating rate of 1.5°C / min, and keep it warm for 45 minutes; add indigo dye, hydrosulfite and sodium hydroxide to the dyeing bath in the second step of dyeing, and raise the temperature of the above solution to 40°C at a heating rate of 1°C / min, and keep it warm. 30 minutes to reduce the indigo dye, put the polyester-cotton fabric dyed in the first step into the a...

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PUM

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Abstract

The invention discloses a union dyeing method of a polyester-cotton fabric with indigo dye. The polyester-cotton fabric is dyed through the indigo dye in a two-bath two-step dyeing manner. The method including following steps: adding the indigo dye, sodium hydrosulfite and sodium hydroxide to a dye bath, increasing a temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, adding a carrier and sodium chloride, putting the polyester-cotton fabric into the dye bath, increasing the temperature to 80-100 DEG C and maintaining the temperature for 20-90 min, adding the indigo dye, the sodium hydrosulfite and the sodium hydroxide to another dye bath, increasing the temperature to 40-80 DEG C and maintaining the temperature for 10-50 min to enable the indigo dye to be reduced, putting the dyed polyester-cotton fabric into the dye bath, increasing the temperature to 20-60 DEG C and maintaining the temperature for 30-60 min, and finally carrying out a water-washing process, a soaping process, a water-washing process and a drying process, or a drying process by air, to the dyed fabric. By means of the two-bath two-step dyeing method, the polyester-cotton fabric is dyed so that polyester and cotton fabric have a relative good identical color ability and a satisfactory dyeing depth can be achieved. The method is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing, and relates to a method for dyeing polyester-cotton blended or interlaced fabrics with indigo dyes, especially capable of realizing better homochromaticity and higher dyeing depth of polyester-cotton indigo-dyed fabrics. Background technique [0002] Denim clothing originated in the United States. At first, denim clothing appeared to solve the problem of weak pants, but with the development of denim clothing, it has been favored by people as a fashion. With the improvement of people's quality of life, the requirements for clothing are also constantly increasing, requiring the development of denim clothing towards diversification, personalization, and functionalization. Polyester fabrics have excellent shape retention and wrinkle resistance, and have excellent "washable and wearable" properties. Cow-polyester-cotton jeans made of polyester are wide and wrinkle-free, durable and beauti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/85D06P1/22D06P1/673
Inventor 曹机良孟春丽王延伟魏媛许志忠程献伟
Owner HENAN INST OF ENG
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