CN107988823B

CN107988823B - Method for dyeing fabric and colored fabric

Info

Publication number: CN107988823B
Application number: CN201711329332.4A
Authority: CN
Inventors: 刘丽军; 李华南; 黄宇光
Original assignee: Guangdong Esquel Textiles Co Ltd
Current assignee: Guangdong Esquel Textiles Co Ltd
Priority date: 2017-12-13
Filing date: 2017-12-13
Publication date: 2020-06-12
Anticipated expiration: 2037-12-13
Also published as: CN107988823A

Abstract

The invention discloses a method for dyeing fabric, which comprises the following steps: placing the fabric in a dye vat for dyeing to obtain a semi-finished product of the colored fabric; placing the semi-finished yarn-dyed fabric in an acetic acid solution with the pH value of 5-6, preserving the heat at 42-48 ℃ for 5-15 min, adding a softening agent, and continuing preserving the heat for 5-15 min; and adding a hydrophilic color fixing agent, continuously keeping the temperature for 10-20 min, taking out of the vat, and drying to obtain the yarn-dyed fabric. The method can obviously improve the hydrophilic performance of the yarn dyed fabric, and the hydrophilic qualification rate of the obtained yarn dyed fabric reaches more than 97 percent.

Description

Method for dyeing fabric and colored fabric

Technical Field

The invention relates to the technical field of fabric dyeing production, in particular to a fabric dyeing method and a dyed fabric.

Background

In the dyeing production process and the functional finishing of the knitted fabric, the knitted fabric is required to have good permeability and hydrophilicity, so that the chemical material can be attached to the fabric through the medium to complete dyeing and functional finishing, and therefore, the improvement of the hydrophilic effect of the fabric is very important.

At present, the researches for improving the hydrophilic performance of knitted fabrics mainly comprise two types: the method comprises the following steps: the hydrophilicity of the fiber is improved by blending or composite spinning with hydrophilic substances, or the water wettability of the surface of the fiber is improved by carrying out fiber micropore treatment and fiber section abnormity; secondly, the chemical method comprises the following steps: the hydrophilic monomer block copolymerization is introduced to make the macromolecule hydrophilic, or the hydrophilic monomer graft copolymerization is used for hydrophilic finishing on the fiber surface, the graft copolymerization method can be a pure chemical reaction, and can also be means such as plasma, ultraviolet irradiation modification, enzyme treatment modification and the like. However, the traditional method has either insignificant effect or complex process.

Disclosure of Invention

Therefore, there is a need for a method for dyeing fabric, which can significantly improve the hydrophilicity of the knitted fabric and has a simple process.

A method of dyeing fabric comprising the steps of:

placing the fabric in a dye vat for dyeing to obtain a semi-finished product of the colored fabric;

placing the semi-finished yarn-dyed fabric in an acetic acid solution with the pH value of 5-6, preserving the heat at 42-48 ℃ for 5-15 min, adding a softening agent, and continuing preserving the heat for 5-15 min; and adding a hydrophilic color fixing agent, continuously keeping the temperature for 10-20 min, taking out of the vat, and drying to obtain the yarn-dyed fabric.

According to the method, after dyeing, the softening agent and the hydrophilic color fixing agent are adopted for carrying out softening color fixing treatment, and the softening agent and the hydrophilic color fixing agent can be uniformly combined with fibers of the fabric to carry out fixing reaction by controlling the pH, the treatment temperature and the heat preservation time of a system, so that good softening and hydrophilic modification effects are achieved, and the effect of improving the hydrophilic performance of the fabric is achieved.

Meanwhile, the appearance and the hand feeling of the fabric can be improved and the rubbing fastness can be improved by the soft color fixing treatment after dyeing, so that the dyed dye does not fall off from the fiber, the color fastness is improved, the hand feeling of the fabric is more comfortable and soft, and the coloring is kept for a longer time. Furthermore, after the softening treatment is finished by adding the softening agent, the softening liquid is not discharged, and the hydrophilic color fixing agent is directly added into the softening liquid for heat preservation treatment, so that the water can be greatly saved, the flow can be shortened, the waste liquid discharge and treatment cost can be reduced, and the purpose of saving energy can be achieved.

The technical scheme provided by the application has the advantages that the process is simple and feasible, the dyeing equipment of the traditional dyeing process is not required to be changed, the over-soft color fixation and the hydrophilic modification are simultaneously carried out after dyeing, the independent hydrophilic modification treatment operation on the fabric is not required, the treatment cylinder number is reduced, the water consumption is saved, the hydrophilicity of the fabric is improved, and the discharge of dyeing waste liquid is reduced.

In one embodiment, the mass volume ratio of the added softening agent to the acetic acid solution is 0.1 g-4 g: 1L.

Further, the softening agent is selected from at least one of quaternary ammonium salt modified polysiloxane and soluble polyurethane softening agent. Cationic softeners such as quaternary ammonium salt modified polysiloxane or soluble polyurethanes with hydrophilic property are selected for softening treatment, so that the fabric is soft and smooth, and the hydrophilicity of the fabric can be effectively improved.

In one embodiment, the mass-to-volume ratio of the added hydrophilic color fixing agent to the acetic acid solution is 1 g-4 g: 1L.

Further, the hydrophilic fixing agent is a cationic hydrophilic fixing agent.

The selected cationic hydrophilic color fixing agent can be used together with other cationic finishing agents in one bath, so that the phenomenon of poor wet fastness of the printed and dyed fabric is obviously improved, and the light fastness, the perspiration fastness and the hydrophilic performance of the fabric can be improved.

In one embodiment, the mass ratio of the yarn-dyed fabric semi-finished product to the acetic acid solution is 1: 6-8, namely the bath ratio is 1: 6-8.

In one embodiment, the softening agent and the hydrophilic fixing agent are added at a uniform rate. The softening agent and the hydrophilic color fixing agent are added by a uniform-speed adding method, so that the material is added more uniformly.

In one embodiment, the step of placing the fabric in a dye vat for dyeing is preceded by a wash vat, and the step of washing the wash vat is as follows: adding cleaning liquid into a dye vat, heating to 72-78 ℃, preserving heat for 5-10 min, then heating to 90-95 ℃ at the heating rate of 2-5 ℃/min, preserving heat for 15-25 min, then cooling to 80-85 ℃, discharging liquid, and finally washing with water. In the step of washing the dye vat, staged temperature rise is adopted, and the temperature rise speed and the treatment time are controlled to achieve the best cleaning effect so as to thoroughly clean the dye vat.

Further, the cleaning solution comprises the following components: 0.5-2 g/L of degreaser, 0.5-2 g/L of sodium carbonate and the balance of water. By adding a proper amount of degreaser and alkali for cylinder washing treatment, oil solution and contaminated oil dirt, dust, pigment and the like added in the dyeing process can be effectively removed.

Another object of the present application is to provide a colored fabric produced by the above method for dyeing fabric. The yarn dyed fabric prepared by the method has good hydrophilic performance, and reworking caused by poor hydrophilicity in subsequent functional finishing can be reduced.

Drawings

FIG. 1 is a schematic diagram of a process curve for over-soft fixation in one embodiment;

FIG. 2 is a schematic view of a process curve for a wash tank in one embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

A method of improving the hydrophilicity of a knitted fabric comprising the steps of:

and S01, placing the fabric in a dye vat for dyeing to obtain a semi-finished product of the colored fabric.

Specifically, the dyeing step comprises boiling-off pretreatment, dyeing and soaping treatment.

S02, placing the yarn-dyed fabric semi-finished product in an acetic acid solution with the pH value of 5-6, preserving the heat for 5-15 min at 42-48 ℃, and then adding a softening agent to continuously preserve the heat for 5-15 min; and adding a hydrophilic color fixing agent, continuously keeping the temperature for 10-20 min, taking out of the vat, and drying to obtain the yarn-dyed fabric.

Specifically, as shown in fig. 1, water is fed and the bath ratio is controlled to be 1: 6-8, heating to 42-48 ℃, adding acetic acid to adjust the pH value of the system to 5-6, keeping the temperature at 42-48 ℃ for 5-15 min, adding a softening agent, and keeping the temperature for 5-15 min; and adding a hydrophilic color fixing agent, continuously keeping the temperature for 10-20 min, discharging liquid, taking out of the vat, and drying to obtain the yarn-dyed fabric.

In one embodiment, the mass volume ratio of the added softening agent to the acetic acid solution is 0.1 g-4 g:1L, namely the content of the hydrophilic color fixing agent in the system is 0.1 g/L-4 g/L.

Further, the softener is a cationic softener having hydrophilicity.

Further, the softening agent may be selected from one of quaternary ammonium salt modified polysiloxane and soluble polyurethane type softening agent. The quaternary ammonium salt modified polysiloxane is polysiloxane containing quaternary ammonium functional groups. Preferably, EMULSION4001S manufactured by Evonik and PERSOFTAL RL10301 manufactured by TANATEX are used. The quaternary ammonium salt modified polysiloxane or soluble polyurethane softening agent with excellent permeability and film forming property is used for softening treatment, so that the fabric feels soft, and the hydrophilicity of the fabric can be effectively improved.

In one embodiment, the hydrophilic fixing agent is a cationic hydrophilic fixing agent. Preferably, the hydrophilic color fixing agent is XQG-6 produced by Xianqiao assistant industry Co.

In one embodiment, the softener and hydrophilic fixing agent are added at a uniform rate. The softening agent and the hydrophilic color fixing agent are added by a uniform-speed adding method, so that the material is added more uniformly.

Specifically, the softening agent is added into the dye vat from the auxiliary vat in a linear feeding mode set by the dyeing machine for 10min, and the hydrophilic color fixing agent is added into the main vat from the auxiliary vat in the linear feeding mode set by the dyeing machine. The automatic batching system is adopted for blanking, materials are added into the auxiliary cylinder for waiting, on one hand, the materials are uniformly stirred in the auxiliary cylinder in the waiting process, the materials can be fully stirred, the time is saved, and on the other hand, the materials can be ensured to be uniformly added.

In one embodiment, after the yarn dyed fabric is taken out of the cylinder, the yarn dyed fabric needs to be wrapped by gummed paper in order to avoid being stained with external impurities; when the yarn dyed fabric is dried, equipment such as a press roller of a dryer and the like needs to be cleaned by water and then put on a machine for drying.

In one embodiment, a step of washing the cylinder is further included before step S01.

As shown in fig. 2, the steps of washing the jar are specifically: adding cleaning liquid into a dye vat, heating to 72-78 ℃, preserving heat for 5-10 min, then heating to 90-95 ℃ at the heating rate of 2-5 ℃/min, preserving heat for 15-25 min, then cooling to 80-85 ℃, draining, and finally cleaning with water.

In the process of washing the dye vat, staged temperature rise is adopted, and the temperature rise speed and the treatment time are controlled to achieve the best cleaning effect so as to thoroughly clean the dye vat.

Further, the cleaning solution comprises the following components: 0.5-2 g/L of degreaser, 0.5-2 g/L of sodium carbonate and the balance of water. The oil solution and the contaminants such as oil dirt, dust, pigment and the like added in the dyeing process can be effectively removed by adding a proper amount of deoiling agent and alkali for cylinder washing treatment.

Furthermore, the addition mode of the cleaning solution during cylinder cleaning is to sequentially add the required amount of the degreaser and the sodium carbonate.

Further, in the jar washing process, the water inflow is related to the bath ratio required by the working procedure, and the bath ratio is controlled to be 1: 8-10, namely the weight of each part of fabric corresponds to the weight of water.

In the process of knitted fabric production, a plurality of different chemical materials are required, some of the chemical materials have a water repellent effect, if machine equipment is stained, the knitted fabric can also be affected, the surface of the knitted fabric is not hydrophilic, and therefore in order to improve the hydrophilic performance of the knitted fabric, measures such as cylinder washing before dyeing, after dyeing, soft color fixation by using a softening agent and a hydrophilic color fixing agent, protection after cylinder discharge and the like are adopted in the method, the hydrophilic performance of the knitted fabric is improved, rework caused by poor hydrophilicity in functional finishing can be reduced, and the cost is saved.

The method uses the cleaning solution to clean the dye vat before dyeing, and the knitted fabric is not put into the dye vat, so that the dye vat has no dirt and impurities such as oil stain, wax, dust, pigment and the like, and the knitted fabric can be prevented from being polluted; removing the accompanying matters, residual sizing agents and oil and wax on the grey cloth of the knitted fabric by boiling to purify fibers, improve the hydrophilicity of the knitted fabric and improve the permeability and the subsequent treatment effect of the knitted fabric; in the process of carrying out soft color fixation by adopting a cationic softening agent and a hydrophilic color fixing agent after dyeing and soaping, the pH, the temperature and the heat preservation treatment time are controlled, so that the softening effect and the hydrophilic finishing effect are good, and the hydrophilic performance of a knitted fabric finished product is further improved; after the knitted fabric is taken out of the cylinder, the knitted fabric is wrapped and protected by gummed paper, the knitted fabric is prevented from being polluted by oil, oil and wax to affect the hydrophilicity of the knitted fabric, and the effect of improving the hydrophilicity of the knitted fabric is achieved.

Meanwhile, a dye vat is cleaned before dyeing, so that the knitted fabric is prevented from being polluted, impurities such as oil stain, oil wax and the like on grey cloth of the knitted fabric are removed through boiling, the knitted fabric can be prevented from being dyed unevenly at the later stage, dyeing defects such as dyeing defects and color spots are generated, the permeation effect and the coloring effect are enhanced during dyeing treatment, the appearance and the hand feeling of the knitted fabric can be improved and the friction fastness can be improved due to over-soft color fixation after dyeing, the dyed dye does not fall off from fibers, the color fastness is improved, the hand feeling of the knitted fabric is more comfortable and softer, and the coloring can be kept more lasting.

Furthermore, the soft color fixation is carried out in one bath, so that the water can be greatly saved, the sewage discharge is reduced, and the purpose of saving energy is achieved.

Another object of the present application is to provide a yarn dyed fabric obtained by the above method. The yarn dyed fabric prepared by the method has good hydrophilic performance, and reworking caused by poor hydrophilicity can be reduced.

The following are specific examples

The hydrophilic color fixing agent is XQG-6 produced by Xianqiao auxiliary agent industry Co., Ltd, the softening agent is EMULSION4001S produced by Evonik company, and the deoiling agent is JInterge LCF-185 produced by Taiwan Fuyun science chemical Co., Ltd.

Example 1

1) Before dyeing, according to a tank washing process curve schematic diagram shown in figure 1, controlling a bath ratio to be 1: 8, adding the required degreaser and the soda ash into the main cylinder from the auxiliary cylinder according to the condition that the cleaning solution contains 0.5g/L of degreaser and 0.5g/L of soda ash, quickly heating to 72 ℃, preserving heat for 5min, then heating to 90 ℃ at the heating speed of 2 ℃/min, preserving heat for 25min, cooling to 80 ℃ and discharging liquid, and cleaning the dye vat for 10min once by using clear water and discharging liquid.

2) And placing the knitted fabric in a clean dye vat for pre-treatment scouring, dyeing and post-treatment soaping to obtain a semi-finished product of the colored fabric.

3) After the soaping is finished, according to a schematic diagram of a too-soft color fixing process curve shown in fig. 2, controlling the bath ratio to be 1: 6, adding the required acetic acid from the auxiliary tank to the main tank according to the condition that the pH value of the solution is adjusted to 5-6, and then heating to 48 ℃ for heat preservation operation for 15 min; adding the softening agent into the dye vat from the auxiliary vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the softening agent in the dye vat is 4g/L, and carrying out heat preservation operation for 5 min; and (3) finishing adding the hydrophilic color fixing agent from the auxiliary vat to the main vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the hydrophilic color fixing agent in the dye vat is 4g/L, and discharging liquid after heat preservation operation for 10 min.

4) After the fabric is taken out of the vat, the colored fabric is wrapped by gummed paper, so that the fabric is prevented from being stained with external impurities; when the fabric is dried, devices such as a press roller of a dryer and the like are cleaned by water in advance, and then the fabric is dried on a machine.

Example 2

1) Before dyeing, according to a tank washing process curve schematic diagram shown in figure 1, controlling a bath ratio to be 1: 9, adding the required degreaser and the soda ash into the main cylinder from the auxiliary cylinder according to the condition that the cleaning solution contains 1.2g/L of degreaser and 1.2g/L of soda ash, quickly heating to 75 ℃, preserving heat for 5min, then heating to 95 ℃ at the heating speed of 5 ℃/min, preserving heat for 20min, cooling to 85 ℃, discharging liquid, and cleaning the dye vat for 10min and once by using clean water.

3) After the soaping is finished, according to a schematic diagram of a too-soft color fixing process curve shown in fig. 2, controlling the bath ratio to be 1: 7, adding the required acetic acid from the auxiliary tank to the main tank according to the condition that the pH value of the solution is adjusted to 5-6, and then heating to 45 ℃ and carrying out heat preservation operation for 10 min; adding the softening agent into the dye vat from the auxiliary vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the softening agent in the dye vat is 2g/L, and carrying out heat preservation operation for 10 min; and (3) finishing adding the hydrophilic color fixing agent from the auxiliary vat to the main vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the hydrophilic color fixing agent in the dye vat is 2g/L, and discharging liquid after heat preservation operation for 15 min.

4) After the fabric is taken out of the cylinder, the colored woven fabric is wrapped by gummed paper, so that external impurities are prevented from being stained; when the fabric is dried, devices such as a press roller of a dryer and the like are cleaned by water in advance, and then the fabric is dried on a machine.

Example 3

1) Before dyeing, according to a tank washing process curve schematic diagram shown in figure 1, controlling a bath ratio to be 1: 10, adding the required degreaser and the required soda ash into the main cylinder from the auxiliary cylinder according to the condition that the cleaning solution contains 2g/L of degreaser and 2g/L of soda ash, quickly heating to 78 ℃, preserving heat for 10min, then heating to 95 ℃ at the heating speed of 5 ℃/min, preserving heat for 15min, then cooling to 85 ℃, discharging liquid, and cleaning the dye vat for 10min once by using clean water, and discharging liquid.

3) After the soaping is finished, according to a schematic diagram of a too-soft color fixing process curve shown in fig. 2, controlling the bath ratio to be 1: 8, adding the required acetic acid from the auxiliary tank to the main tank according to the regulation of the pH value of the solution to 5-6, and then heating to 42 ℃ for heat preservation operation for 15 min; adding the softening agent into the dye vat from the auxiliary vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the softening agent in the dye vat is 0.5g/L, and carrying out heat preservation operation for 15 min; and (3) finishing adding the hydrophilic color fixing agent from the auxiliary vat to the main vat in a linear feeding mode set by the dyeing machine for 10min, wherein the concentration of the hydrophilic color fixing agent in the dye vat is 1g/L, and discharging liquid after heat preservation operation for 20 min.

Example 4

Example 4 is essentially the same as example 2, except that the hydrophilic fixing agent content in example 4 is 5 g/L.

Example 5

Example 5 is substantially the same as example 2 except that example 5 washes the knitted fabric together with the dye vat.

Comparative example 1

Comparative example 1 is essentially the same as example 2, except that comparative example 1 does not use a hydrophilic fixing agent.

Comparative example 2

Comparative example 2 is substantially the same as example 2 except that the order of addition of the softening agent and the hydrophilic fixing agent is different, specifically comparative example 4 where the hydrophilic fixing agent is added for fixing and then the softening agent is added.

Comparative example 3

Comparative example 3 is essentially the same as example 2 except that the order of addition of the softener and hydrophilic fixing agent is different, specifically the softener and hydrophilic fixing agent of comparative example 5 are added simultaneously.

Comparative example 4

Comparative example 4 is essentially the same as example 2 except that comparative example 5 has a treatment temperature of 50 c for the soft fixation step.

The AATCC method is adopted to detect the hydrophilic qualification rate of the finished products in the examples 1-5 and the comparative examples 1-4, and the obtained results are shown in the following table 1.

TABLE 1 test results of the hydrophilicity acceptability of bulk goods produced by the above examples and comparative examples

	Hydrophilic qualification rate of finished product	Quality test of finished product
			Example 1	98％	The fabric has high color fastness and is uniformly and smoothly dyed
Example 2	99％	The fabric has high color fastness and is uniformly and smoothly dyed
			Example 3	97.5％	The fabric has high color fastness and is uniformly and smoothly dyed
Example 4	98.5％	The fabric has high color fastness and is uniformly and smoothly dyed
			Example 5	97％	The fabric has high color fastness, is soft and smooth and has little color spots
Comparative example 1	90.5％	Unqualified color fastness test
			Comparative example 2	94.5％	The fabric has high color fastness, even dyeing and dry and astringent
Comparative example 3	93％	Uneven and dry fabric dyeing
			Comparative example 4	93％	The fabric has high color fastness, is smooth and has a small amount of soft oil spots

As can be seen from the above table 1, the finished fabric products obtained in the embodiments 1 to 5 have high hydrophilicity qualified rate, which all reach more than 97%, and the finished fabric has uniform color fastness and dyeing and soft hand feeling. And the finished fabric products obtained in the comparative examples 1-4 have the hydrophilicity qualified rate of below 95 percent, and the color fastness of the comparative example 1 and the comparative example 4 is unqualified. The technical scheme can improve the hydrophilic performance of the finished fabric product, and meanwhile, the dyeing effect of the obtained fabric is good.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of dyeing fabric, comprising the steps of:

placing the semi-finished yarn-dyed fabric in an acetic acid solution with the pH value of 5-6, preserving the heat at 42-48 ℃ for 5-15 min, adding a softening agent, and continuing preserving the heat for 5-15 min; adding a hydrophilic color fixing agent, keeping the temperature for 10-20 min, taking out of the vat, and drying to obtain the yarn-dyed fabric;

wherein the softening agent is selected from at least one of quaternary ammonium salt modified polysiloxane and soluble polyurethane softening agent; the hydrophilic color fixing agent is a cationic hydrophilic color fixing agent.

2. The method for dyeing the fabric according to claim 1, wherein the mass volume ratio of the addition amount of the softening agent to the acetic acid solution is 0.1 g-4 g: 1L.

3. A method of dyeing fabric according to claim 1, characterized in that the softening agent is selected from at least one of emulosion 4001S and PERSOFTAL RL 10301.

4. The method for dyeing the fabric according to claim 1, wherein the mass-to-volume ratio of the added amount of the hydrophilic color fixing agent to the acetic acid solution is 1 g-4 g: 1L.

5. A method of dyeing fabric according to claim 1 characterized in that the hydrophilic fixing agent is XQG-6.

6. The method for dyeing fabric according to claim 1, wherein the mass ratio of the yarn-dyed fabric semi-finished product to the acetic acid solution is 1: 6-8.

7. The method of claim 1, wherein the softening agent and the hydrophilic fixing agent are added at a constant rate.

8. A method of dyeing fabric according to any of claims 1 to 7, characterized in that it further comprises a wash vat prior to the step of placing the fabric in the dye vat for dyeing, said wash vat step being: adding cleaning liquid into a dye vat, heating to 72-78 ℃, preserving heat for 5-10 min, then heating to 90-95 ℃ at the heating rate of 2-5 ℃/min, preserving heat for 15-25 min, then cooling to 80-85 ℃, discharging liquid, and finally washing with water.

9. A method of dyeing fabric according to claim 8 characterized in that said cleaning solution comprises the following components: 0.5-2 g/L of degreaser, 0.5-2 g/L of sodium carbonate and the balance of water.

10. Yarn dyed fabric produced by the method for dyeing fabric according to any one of claims 1 to 9.