阅读说明：本技术 一种环保校服面料的印染方法 (Printing and dyeing method of environment-friendly school uniform fabric ) 是由 王佑愫 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种环保校服面料的印染方法,包括：将校服面料置于染浴中,室温下入染,升温至第一目标温度,保温一定时间,然后降温至第二目标温度,取出后,经水洗、皂洗和水洗后,得到印染后的校服面料。本申请通过染浴条件的优化,既减少了印染工艺的物料消耗和能源消耗,同时进一步改善校服面料的耐干湿摩擦色牢度和耐日晒色牢度,非常适用于夏季蓝色色调的环保校服印染,应用前景广阔。(The invention discloses a printing and dyeing method of environment-friendly school uniform fabric, which comprises the following steps: and (3) putting the school uniform fabric into a dye bath, dyeing at room temperature, heating to a first target temperature, keeping the temperature for a certain time, then cooling to a second target temperature, taking out, and washing with water, soaping and water to obtain the printed and dyed school uniform fabric. By optimizing the dye bath conditions, the material consumption and the energy consumption of the printing and dyeing process are reduced, the dry and wet friction color fastness and the sunlight color fastness of the school uniform fabric are further improved, the color fastness correction method is very suitable for printing and dyeing of the environment-friendly school uniform with the summer blue color tone, and the application prospect is wide.)

1. A printing and dyeing method of environment-friendly school uniform fabric is characterized by comprising the following steps: and (3) placing the school uniform fabric in a dye bath, dyeing at room temperature, heating to a first target temperature, preserving heat for a certain time, then cooling to a second target temperature, taking out, and washing with water, soaping and water to obtain the printed and dyed school uniform fabric.

2. The printing and dyeing method according to claim 1, characterized in that the uniform fabric is selected from (50-70)/(30-50) polyester-cotton blended fabric.

3. The printing process according to claim 1 or 2, characterized in that the dye bath comprises a blue anthraquinone disperse dye and a blue anthraquinone reactive dye.

4. The printing and dyeing method according to claim 3, characterized in that the blue anthraquinone disperse dye is selected from compounds represented by formula (I),

wherein X is selected from halogen.

5. The printing method according to claim 3, wherein the blue anthraquinone reactive dye is selected from a compound represented by formula (II) or a salt thereof,

wherein R is selected from SO₂CH＝CH₂or-SO₂C₂H₄OSO₃M; m is selected from H and alkali metals.

6. A process according to claim 1 or claim 2 characterised in that the blue anthraquinone disperse dye and the blue anthraquinone reactive dye are each present in an amount of from 0.5 to 3% owf.

7. The printing process according to claim 1 or 2, characterized in that the dye bath further comprises benzyl alcohol, sodium carbonate and anhydrous sodium sulphate.

8. The printing method according to claim 1 or 2, wherein the bath ratio is 1 (8-16).

9. The printing and dyeing method according to claim 1 or 2, characterized in that the first target temperature is 95-100 ℃; the heating rate is 1-4 ℃/min; the heat preservation time is 20-120 min.

10. The printing and dyeing method according to claim 1 or 2, characterized in that the second target temperature is 60-70 ℃; the cooling rate is 2-6 ℃/min.

Technical Field

The application relates to the field of textile printing and dyeing. Specifically, the application relates to a printing and dyeing method of an environment-friendly school uniform fabric.

Background

In recent years, with the continuous improvement of the economic level of China and the continuous upgrade of education-related industries, people have higher and higher attention to the quality of school uniforms of primary and secondary schools. According to part of news report analysis, in the problem school uniform exposed in recent years, part of illegal manufacturers often steal work and reduce materials on the components of the fabric, steal work and reduce materials on the thickness density, steal work and reduce materials on the printing and dyeing process, steal work and reduce materials on the dye and steal work and reduce materials on accessories based on cost consideration, so that the problem school uniform events are frequent, and the important attention of the public opinion is aroused. Among them, a considerable part of the reasons for the generation of the problem uniform comes from the failure of the printing and dyeing process.

In order to avoid the generation of problem school uniforms from the source, the national standard of GB/T31888-. Among them, important dyeing indexes include dry and wet rubbing fastness and light fastness.

However, as primary and secondary school students are in the growth and development stage, the exercise amount is large, the perspiration amount is large, and how to meet the related requirements of the new national standard still is a difficult challenge; this is especially important in summer school uniforms. In addition, statistics have found that blue, black, white, and purple are dominant hues that are highly favored by students, parents, and teachers over school uniform color. Among these, blue is the most popular color tone for school uniforms. Therefore, for summer school uniform with blue tone, how to improve the dry and wet rubbing color fastness and the light fastness of the school uniform fabric is a technical problem which is always concerned by people.

Disclosure of Invention

Problems to be solved by the invention

Aiming at the defects, the application provides a printing and dyeing method of an environment-friendly school uniform fabric.

Means for solving the problems

The application provides a printing and dyeing method of an environment-friendly school uniform fabric, which is characterized by comprising the following steps: and (3) placing the school uniform fabric in a dye bath, dyeing at room temperature, heating to a first target temperature, preserving heat for a certain time, then cooling to a second target temperature, taking out, and washing with water, soaping and water to obtain the printed and dyed school uniform fabric.

In the present application, the room temperature means 20 to 30 ℃.

In a specific embodiment, the room temperature represents 25 ℃.

The printing and dyeing method is characterized in that the school uniform fabric is selected from (50-70)/(30-50) polyester-cotton blended fabric.

Preferably, the school uniform fabric is selected from (55-70)/(30-45) polyester-cotton blended fabric; more preferably, the school uniform fabric is selected from (60-70)/(30-40) polyester-cotton blended fabric; and, most preferably, the uniform fabric is selected from (60-65)/(35-40) polyester-cotton blended fabric.

In a specific embodiment, the school uniform fabric is selected from 65/35-polyester cotton blended fabric.

The printing and dyeing method according to the application is characterized in that the dye bath comprises a blue anthraquinone dispersion dye and a blue anthraquinone reactive dye.

The printing and dyeing method according to the application is characterized in that the blue anthraquinone disperse dye is selected from compounds shown in a formula (I),

wherein X is selected from halogen.

In one embodiment, the blue anthraquinone disperse dye is selected from compounds represented by formula (I-1),

in another embodiment, the blue anthraquinone disperse dye is selected from the compounds of formula (I-2),

in a specific embodiment, the blue anthraquinone disperse dye is selected from c.i. disperse blue 56.

The printing and dyeing method according to the application is characterized in that the blue anthraquinone reactive dye is selected from compounds shown in a formula (II) or salts thereof,

wherein R is selected from SO₂CH＝CH₂or-SO₂C₂H₄OSO₃M; m is selected from H and alkali metals.

Preferably, the alkali metal is selected from Na, K and NH₄。

In one embodiment, the blue anthraquinone reactive dye is selected from compounds represented by formula (II-1) or salts thereof,

wherein M is selected from H and alkali metals.

In another embodiment, the blue anthraquinone reactive dye is selected from compounds of formula (II-2) or salts thereof,

wherein M is selected from H and alkali metals.

In a particular embodiment, the blue anthraquinone reactive dye is selected from c.i. reactive blue 19.

The printing and dyeing method is characterized in that the dosage of the blue anthraquinone disperse dye and the dosage of the blue anthraquinone reactive dye are respectively 0.5-3% owf.

Preferably, the blue anthraquinone disperse dye and the blue anthraquinone reactive dye are respectively used in an amount of 0.5-2.5% owf; more preferably, the blue anthraquinone disperse dye and the blue anthraquinone reactive dye are each present in an amount of 0.5-2% owf; and, most preferably, the blue anthraquinone disperse dye and the blue anthraquinone reactive dye are each present in an amount of 1-2% owf.

In a specific embodiment, the blue anthraquinone disperse dye and the blue anthraquinone reactive dye are each present in an amount of 1.5% owf.

The printing and dyeing method according to the application is characterized in that the dye bath further comprises benzyl alcohol.

The printing and dyeing method is characterized in that the dosage of the benzyl alcohol is 40-80 mL/L.

Preferably, the dosage of the benzyl alcohol is 40-70 mL/L; more preferably, the dosage of the benzyl alcohol is 40-60 mL/L; and, most preferably, the amount of benzyl alcohol is 40-50 mL/L.

In a specific embodiment, the amount of benzyl alcohol is 45 mL/L.

The printing and dyeing method according to the application is characterized in that the dye bath further comprises sodium carbonate.

The printing and dyeing method is characterized in that the amount of the sodium carbonate is 2-6 g/L.

Preferably, the amount of the sodium carbonate is 2-5 g/L; more preferably, the amount of the sodium carbonate is 2-4 g/L; and, most preferably, the sodium carbonate is used in an amount of 2 to 3 g/L.

In a particular embodiment, the sodium carbonate is used in an amount of 2.5 g/L.

The printing and dyeing method is characterized in that the dye bath further comprises anhydrous sodium sulphate.

The printing and dyeing method is characterized in that the anhydrous sodium sulphate is used in an amount of 30-50 g/L.

Preferably, the using amount of the anhydrous sodium sulphate is 30-45 g/L; more preferably, the anhydrous sodium sulphate is used in an amount of 30-40 g/L; and, most preferably, the anhydrous sodium sulphate is used in an amount of 35-40 g/L.

In a specific embodiment, the anhydrous sodium sulphate is used in an amount of 40 g/L.

In a preferred embodiment, the dye bath further comprises benzyl alcohol, sodium carbonate and anhydrous sodium sulphate; the dosage of the benzyl alcohol, the sodium carbonate and the anhydrous sodium sulphate is respectively 40-80mL/L, 2-6g/L and 30-50 g/L.

The textile printing method is characterized in that the bath ratio is 1 (8-16).

Preferably, the bath ratio is 1 (9-15); more preferably, the bath ratio is 1 (10-14); and, most preferably, the bath ratio is 1 (11-13).

In a specific embodiment, the bath ratio is 1: 12.

The printing and dyeing method according to the application is characterized in that the first target temperature is 95-100 ℃; the heating rate is 1-4 ℃/min; the heat preservation time is 20-120 min.

Preferably, the first target temperature is 95-99 ℃; the heating rate is 1.5-3.5 ℃/min; the heat preservation time is 25-100 min; more preferably, the first target temperature is 96-99 ℃; the heating rate is 2-3.5 ℃/min; the heat preservation time is 30-80 min; and, most preferably, the first target temperature is 97-99 ℃; the heating rate is 2-3 ℃/min; the heat preservation time is 35-60 min.

In a specific embodiment, the first target temperature is 98 ℃; the heating rate is 2.5 ℃/min; the heat preservation time is 45 min.

The printing and dyeing method according to the application is characterized in that the second target temperature is 60-70 ℃; the cooling rate is 2-6 ℃/min.

Preferably, the second target temperature is 61-69 ℃; the cooling rate is 2.5-5.5 ℃/min; more preferably, the second target temperature is 62-68 ℃; the cooling rate is 3-5 ℃/min; and, most preferably, the second target temperature is 64-67 ℃; the cooling rate is 3.5-4.5 ℃/min.

In a specific embodiment, the second target temperature is 65 ℃; the cooling rate is 4 ℃/min.

The printing and dyeing method is characterized in that the water washing comprises hot water washing and cold water washing at 60-80 ℃.

Preferably, the water washing includes hot water washing and cold water washing at 60-70 ℃.

In a specific embodiment, the water wash comprises a 65 ℃ hot water wash and a cold water wash.

The textile printing method according to the present application is characterized in that the soaping conditions are: 1-5g/L of soap flakes, 1-5g/L of sodium carbonate, 90-95 ℃, boiling for 5-20min, and bath ratio L (30-50).

Preferably, the soaping conditions are: 1-4g/L of soap flakes, 1-4g/L of sodium carbonate, 92-95 ℃, boiling for 10-20min, and bath ratio L (35-45).

In a specific embodiment, the soap flakes are 3g/L, the sodium carbonate is 2g/L, the temperature is 95 ℃, the boiling time is 15min, and the bath ratio L is 40.

ADVANTAGEOUS EFFECTS OF INVENTION

The printing and dyeing method can simplify the existing process, and disperse dye and reactive dye are dyed in one bath through optimization of the dye bath condition, particularly optimization of the dye formula, so that the material consumption and the energy consumption of the printing and dyeing process are reduced, the dry and wet friction color fastness and the light fastness of the school uniform fabric are further improved, the method is very suitable for printing and dyeing of environment-friendly school uniform with blue color in summer, the market demand can be met, and the application prospect is wide.

Detailed Description

The invention will be further illustrated with reference to specific embodiments. It should be understood that these embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the contents of the present invention, and those equivalents may fall within the scope of the present invention defined by the claims.