阅读说明：本技术 一种棉布的染色工艺 (Cotton cloth dyeing process ) 是由 王越标 王超群 于 2020-12-30 设计创作，主要内容包括：本申请涉及面料染整的技术领域,具体公开了一种棉布的染色工艺,将棉坯布如下步骤进行操作：S1：将坯布进行烧毛；S2：退浆；S3：漂白；S4：洗涤；S5：染色；S6：水洗；S7：固色；将经过S6处理后的坯布输送至含有固色组合物的液体中浸轧40-60min,然后冲洗干净；其中固色组合物的原料以重量份计包括：聚乙烯醇缩乙醛二乙氨基乙酸酯20-30份、环氧树脂40-60份、乳化剂20-40份以及二乙氨基羟苯甲酰基苯甲酸己酯2-8份；S8：脱水；S9：定型；经过S9定型之后,从而得到上染之后的棉布。通过使用固色组合物,使得棉坯布表面的染料不易在后续使用的时候从棉坯布上脱落下来。(The application relates to the technical field of fabric dyeing and finishing, and particularly discloses a cotton cloth dyeing process, which comprises the following steps of: s1: singeing the grey cloth; s2: desizing; s3: bleaching; s4: washing; s5: dyeing; s6: washing with water; s7: fixing color; conveying the grey cloth treated by the S6 into liquid containing a color fixing composition for padding for 40-60min, and then washing; the color fixing composition comprises the following raw materials in parts by weight: 20-30 parts of polyvinyl acetal diethylamino acetate, 40-60 parts of epoxy resin, 20-40 parts of emulsifier and 2-8 parts of diethylamino hydroxybenzoyl hexyl benzoate; s8: dehydrating; s9: shaping; after the sizing at S9, dyed cotton cloth was obtained. By using the color fixing composition, the dye on the surface of the cotton grey cloth is not easy to fall off from the cotton grey cloth in the subsequent use.)

1. A cotton cloth dyeing process is characterized by comprising the following steps: the cotton grey cloth is operated according to the following steps:

s1: singeing the grey cloth;

s2: desizing;

s3: bleaching;

s4: washing;

s5: dyeing;

s6: washing with water;

s7: fixing color; conveying the grey cloth treated by the S6 into liquid containing a color fixing composition for padding for 40-60min, and then washing; the color fixing composition comprises the following raw materials in parts by weight: 20-30 parts of polyvinyl acetal diethylamino acetate, 40-60 parts of epoxy resin, 20-40 parts of emulsifier and 2-8 parts of diethylamino hydroxybenzoyl hexyl benzoate;

s8: dehydrating;

s9: shaping;

after the sizing at S9, dyed cotton cloth was obtained.

2. The dyeing process of cotton cloth according to claim 1, characterized in that: the color fixing composition further comprises 22-48 parts of glyceryl oleate in parts by weight.

3. The dyeing process of cotton cloth according to claim 2, characterized in that: the color fixing composition further comprises 8-13 parts of copper chloride in parts by weight.

4. The dyeing process of cotton cloth according to claim 3, characterized in that: the color fixing composition further comprises 11-17 parts by weight of silanetriol glutamate.

5. The dyeing process of cotton cloth according to claim 1, characterized in that: the S5 dyeing comprises the step of dyeing the grey cloth after the S4 treatment, and the chemical compositions of the dye used in the dyeing process are as follows in parts by weight: 35-50 parts of reactive dye, 7-10 parts of soda ash, 3.5-5 parts of anhydrous sodium sulphate, 20-30 parts of leveling agent, 5-8 parts of acetic acid, 11-23 parts of sodium didecyl sulfosuccinate, 7-13 parts of diethyl succinate, 2-5 parts of copper chloride and 80-110 parts of water.

6. The dyeing process of cotton cloth according to claim 5, characterized in that: the leveling agent used in S5 is a mixture of polyoxyethylene alkylphenyl ether phosphate triethanolamine salt and fatty alcohol polyoxyethylene ether sodium sulfate, and the mass ratio of the polyoxyethylene alkylphenyl ether phosphate triethanolamine salt to the fatty alcohol polyoxyethylene ether sodium sulfate is 3: 2.

7. The dyeing process of cotton cloth according to claim 1, characterized in that: and the emulsifier in the S7 color fixing step is sodium dodecyl benzene sulfonate and polyvinyl alcohol, and the mass ratio of the sodium dodecyl benzene sulfonate to the polyvinyl alcohol is 8: 3.

8. The dyeing process of cotton cloth according to claim 1, characterized in that: s9 sizing, placing the grey cloth after S8 scutching into a sizing machine, adjusting the temperature of the sizing machine to 150-160 ℃, preserving heat for 30-50S, and cooling after heat sizing at the cooling temperature of 25 ℃.

Technical Field

The application relates to the technical field of fabric dyeing and finishing, in particular to a cotton cloth dyeing process.

Background

The cotton cloth is one of several kinds of cloth commonly used by people nowadays, and is commonly used for manufacturing fashionable dress, casual wear, underwear, shirts and the like because the cotton cloth has the advantages of light warmth retention, softness and close fitting, and good hygroscopicity and air permeability.

To meet the preference of consumers, cotton dyeing is a common method for dyeing and finishing cotton. The common dye is a reactive dye which has the characteristics of bright color, excellent wet fastness, strong applicability, convenient use, low cost and the like. The reactive dye has a simple molecular structure, contains sulfonic acid groups, has good water solubility, is easy to generate acting force with cotton fibers, and is further dyed on cotton cloth.

However, after the cotton cloth is dyed, the wet rubbing fastness is not high, so that the cotton cloth cannot meet the requirements of people.

Disclosure of Invention

The application provides a cotton cloth dyeing process, which aims to solve the problem that the wet-rubbing fastness of cotton cloth dyed is not high.

The application provides a cotton cloth dyeing process, which adopts the following technical scheme:

a cotton cloth dyeing process comprises the following steps of:

s1: singeing the grey cloth;

s2: desizing;

s3: bleaching;

s4: washing;

s5: dyeing;

s6: washing with water;

s7: fixing color; conveying the grey cloth treated by the S6 into liquid containing a color fixing composition for padding for 40-60min, and then washing; the color fixing composition comprises the following raw materials in parts by weight: 20-30 parts of polyvinyl acetal diethylamino acetate, 40-60 parts of epoxy resin, 20-40 parts of emulsifier and 2-8 parts of diethylamino hydroxybenzoyl hexyl benzoate;

s8: dehydrating;

s9: shaping;

after the sizing at S9, dyed cotton cloth was obtained.

By adopting the technical scheme, after the cotton grey cloth is dyed, water is firstly used for washing the redundant sizing agent on the dyed cloth surface, and meanwhile, the loose color on the surface of the cotton grey cloth is cleaned. And then padding the cotton grey cloth in a liquid containing the color fixing composition, so that the dye on the surface of the cotton grey cloth is not easy to fall off from the cotton grey cloth in the subsequent use. The color fixing composition comprises polyvinyl acetal diethylamino acetate, epoxy resin and diethylamino hydroxybenzoyl hexyl benzoate, and the three substances can be uniformly and stably dispersed in water under the action of an emulsifier. Under the condition that diethylamino hydroxybenzoyl hexyl benzoate exists, polyvinyl acetal diethylamino acetate and epoxy resin can form a thin polymer film which can be attached to cotton grey cloth, so that dye molecules in the cotton grey cloth can be effectively reduced from diffusing to the surface of fibers, flooding can be effectively inhibited, and the color fixing effect on the cotton grey cloth can be achieved.

As a further improvement of the present invention, the fixing composition further comprises 22 to 48 parts by weight of glyceryl oleate.

By adopting the technical scheme, the glyceryl oleate is added into the color fixing composition, so that the toughness of a polymer film formed by polyvinyl acetal diethylaminoacetate and epoxy resin is stronger and firmer, the possibility of breakage of the polymer film in the long-term use process of cotton grey cloth is reduced, and the dyed cotton grey cloth can keep good color fastness for a long time.

As a further improvement of the present invention, the fixing composition further comprises 8 to 13 parts by weight of copper chloride.

By adopting the technical scheme, the copper chloride is dispersed in the liquid and is attached to the cotton grey cloth, so that the possibility of color change caused by heating of the dye in the subsequent process of sizing the cotton grey cloth can be reduced.

As a further improvement of the present invention, the fixing composition further comprises silanetriol glutamate 11-17 parts by weight.

By adopting the technical scheme, under the action of the silanetriol glutamate, the copper chloride and diethylamino hydroxybenzoyl hexyl benzoate can form a metal chelate, and then can be associated on cotton fibers, so that the dye can be firmly associated on the cotton fibers, and the color fastness of the cotton fibers is further improved.

As a further improvement of the invention, the dyeing of S5 comprises the step of dyeing the grey cloth after the treatment of S4, and the chemical compositions of the dye used in the dyeing process comprise the following components in parts by weight: 35-50 parts of reactive dye, 7-10 parts of soda ash, 3.5-5 parts of anhydrous sodium sulphate, 20-30 parts of leveling agent, 5-8 parts of acetic acid, 11-23 parts of sodium didecyl sulfosuccinate, 7-13 parts of diethyl succinate, 2-5 parts of copper chloride and 80-110 parts of water.

By adopting the technical scheme, the cotton fiber has reducibility when the temperature is higher, the reactive dye has oxidability, copper chloride is added into the dye in order to prevent the reactive dye from being oxidized, the copper chloride is completely ionized into copper ions and chloride ions in the solution, and the copper ions have weak oxidability, so that the copper ions and the cotton fiber are subjected to redox reaction, and the reactive dye is protected from being oxidized. By adding sodium didecyl sulfosuccinate and diethyl succinate into the dye, the active dye can be promoted to continuously permeate towards the inside of cotton fibers, and the diethyl succinate can improve the binding capacity of the active dye and the cotton fibers, so that the color fastness of dyed cotton cloth is improved.

As a further improvement of the invention, the leveling agent used in S5 is a mixture of polyoxyethylene alkylphenyl ether phosphate triethanolamine salt and fatty alcohol polyoxyethylene ether sodium sulfate, and the mass ratio of the polyoxyethylene alkylphenyl ether phosphate triethanolamine salt to the fatty alcohol polyoxyethylene ether sodium sulfate is 3: 2.

By adopting the technical scheme, when the reactive dye is used for dyeing grey cloth, a slow dyeing effect can be achieved due to the existence of a leveling agent, the triethanolamine salts of polyoxyethylene alkyl phenyl ether phosphate and the reactive dye have a competitive dyeing effect on cotton fibers, and the triethanolamine salts of polyoxyethylene alkyl phenyl ether phosphate are preferentially combined with the cotton fibers to hinder the combination of the reactive dye and the cotton fibers and delay the dyeing of the reactive dye; however, the binding capacity of the triethanolamine salts of polyoxyethylene alkylphenyl ether phosphate and the cotton fibers is weaker than that of the reactive dye, and the reactive dye can replace the triethanolamine salts of polyoxyethylene alkylphenyl ether phosphate from the cotton fibers along with the passage of time, and finally the reactive dye is used for dyeing the grey cloth, so that the purpose of level dyeing is achieved.

As a further improvement of the invention, the emulsifier in the S7 color fixing step is sodium dodecyl benzene sulfonate and polyvinyl alcohol, and the mass ratio of the sodium dodecyl benzene sulfonate to the polyvinyl alcohol is 8: 3.

By adopting the technical scheme, other substances in the color fixing composition can be uniformly dispersed in water by selecting the compounding of the sodium dodecyl benzene sulfonate and the polyvinyl alcohol, so that other substances of the color fixing composition can play a role.

As a further improvement of the invention, the method comprises the step of S9 sizing, wherein the grey cloth after being scutched by S8 is put into a sizing machine, the temperature of the sizing machine is adjusted to be 150-160 ℃, the temperature is kept for 30-50S, and the grey cloth is cooled after being subjected to heat sizing, wherein the cooling temperature is 25 ℃.

By adopting the technical scheme, after the cotton grey cloth enters the setting machine, the temperature is kept for 30-50s after reaching 150-160 ℃, so that the size of the cotton grey cloth is completely stabilized, the warp deviation and the weft deviation of the cotton grey cloth can not occur, and meanwhile, the dye on the cotton grey cloth is completely fixed on the cotton cloth.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the dyed cotton grey cloth is soaked in the liquid containing the color fixing composition, so that the dye on the surface of the cotton grey cloth is not easy to fall off from the cotton grey cloth in the subsequent use process;

2. under the action of silanetriol glutamate, copper chloride can form a metal chelate with diethylamino hydroxybenzoyl hexyl benzoate and then can be associated on cotton fibers, so that dyes can be firmly associated on the cotton fibers, and the color fastness of the cotton fibers is further improved;

3. the cotton fiber has reducibility at a higher temperature, the reactive dye has oxidability, in order to prevent the reactive dye from being oxidized, copper chloride is added into the dye, the copper chloride is completely ionized into copper ions and chloride ions in a solution, and the copper ions have weak oxidability, so that the copper ions and the cotton fiber are subjected to redox reaction, and the reactive dye is protected from being oxidized. By adding sodium didecyl sulfosuccinate and diethyl succinate into the dye, the active dye can be promoted to continuously permeate towards the interior of cotton fibers, and the diethyl succinate can improve the binding capacity of the active dye and the cotton fibers, so that the color fastness of dyed cotton cloth is improved;

4. by compounding sodium dodecyl benzene sulfonate and polyvinyl alcohol, other substances in the color fixing composition can be uniformly dispersed in water, so that other substances of the color fixing composition can play a role.

Drawings

FIG. 1 is a process flow diagram of a cotton cloth dyeing process of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

The raw material components in this application are shown in table 1.

TABLE 1

Example 1:

referring to fig. 1, this embodiment discloses a cotton cloth dyeing process, which comprises the following steps:

s1: and (4) singeing the grey cloth. The grey cloth is conveyed to a singeing machine for singeing, and fluff and thread ends on the surface of the grey cloth are removed, so that the surface of the grey cloth is smooth and clean, and dyeing defects caused by the existence of the fluff during dyeing are prevented.

S2: and (6) desizing. Desizing the singed grey cloth; the method comprises the steps of washing the gray fabric with clear water, conveying the gray fabric into a desizing pool containing desizing liquid to be soaked for 90min after washing is finished, controlling the temperature of the desizing liquid to be 65 ℃ during soaking, wherein the desizing liquid is 15% of soda solution in mass fraction, the using amount of the desizing liquid is 1.3L per kilogram of cotton cloth, and the pH value of the desizing liquid is controlled to be 9.

S3: and (4) bleaching. Washing the grey cloth subjected to the S2 desizing treatment for 15min by using clear water, and bleaching the grey cloth by using bleaching liquid, wherein the bleaching liquid comprises the following substances in parts by weight: 25 parts of sodium hypochlorite, 25 parts of hydrogen peroxide, 13 parts of dichlorobenzyl alcohol and 38 parts of water. The grey cloth is firstly conveyed to a water pool only containing sodium hypochlorite solution, and the water pool is soaked for 80min, wherein the concentration of the sodium hypochlorite is 15 g/L. After the grey cloth is soaked in sodium hypochlorite, the grey cloth is conveyed to a water pool containing hydrogen peroxide, dichlorobenzyl alcohol and water are added into the water pool, and soaking is carried out for 90 min. The concentration of the hydrogen peroxide is 5g/L, the hydrogen peroxide and the dichlorobenzyl alcohol are uniformly mixed in the water pool before the grey cloth is input into the water pool, and then the grey cloth is conveyed into the water pool.

S4: and (6) washing. And (4) conveying the grey fabric processed by the step (S3) to a washing machine for washing with clear water for 30 min.

S5: and (6) dyeing. And conveying the grey cloth processed by the S4 into an overflow dyeing machine for dyeing. 43 parts of reactive dye, 9 parts of calcined soda, 4.3 parts of anhydrous sodium sulphate, 25 parts of leveling agent, 7 parts of acetic acid and 95 parts of water are added into a dye barrel of the overflow dyeing machine in no sequence by weight. Wherein the leveling agent is triethanolamine. The bath ratio was 1:45, the mixture was stirred uniformly, and the raw fabric treated at S4 was transferred to an overflow dyeing machine and dyed for 1 hour.

S6: and (5) washing with water. And conveying the grey cloth dyed by the S5 dyeing process into a washing machine for sufficient washing, wherein the washing time is 120 min.

S7: and (5) fixing color. The greige goods after the treatment of S6 was transferred to a padder containing a fixing composition and padded for 45 min. And the color fixing composition comprises the following chemical components in parts by weight: 25 parts of polyvinyl acetal diethylaminoacetate, 50 parts of epoxy resin, 30 parts of an emulsifier and 5 parts of diethylamino hydroxybenzoyl hexyl benzoate, wherein the emulsifier is tween-80. The color fixing composition is prepared into a mixture with water of which the mass fraction is 30%, and the mixture is continuously stirred to ensure that all the substances are uniformly dispersed in the water to obtain a color fixing solution, wherein the usage amount of the color fixing solution is 3L for each kilogram of grey cloth. And after padding, washing the grey cloth for 30min by using clear water.

S8: and (4) dehydrating. And conveying the grey cloth processed by the S7 into a dehydrating machine for dehydrating for 15 min.

S9: and (6) shaping. The method comprises the steps of scutching the gray fabric dehydrated in the step S7, conveying the gray fabric into a positioning piece for shaping after scutching, adjusting the temperature of a shaping machine to 120 ℃, continuously shaping for 60S, cooling in air after shaping, and cooling to the temperature of the surface of the gray fabric to 25 ℃.

S10: and (6) checking. And then the cloth after being processed by the S9 is subjected to defect detection.

And finally, rolling and packaging the treated cotton cloth.

Example 2:

the difference from example 1 is that in the S7 fixation step, the raw material of the fixation composition further comprises 35 parts by weight of glyceryl oleate.

Example 3:

the difference from example 2 is that in the S7 fixation step, the raw materials of the fixation composition also include 10 parts by weight of copper chloride.

Example 4:

the difference from example 3 is that in the fixation step of S7, the raw material of the fixation composition further comprises 14 parts by weight of silanetriol glutamate.

Example 5:

the difference from example 1 is that S5: and (6) dyeing. And conveying the grey cloth processed by the S4 into an overflow dyeing machine for dyeing. Firstly, 43 parts of reactive dye, 9 parts of soda ash, 4.3 parts of anhydrous sodium sulphate, 25 parts of leveling agent, 7 parts of acetic acid, 17 parts of sodium didecyl sulfosuccinate, 10 parts of diethyl succinate, 3 parts of copper chloride and 95 parts of water are added into a dye bucket of an overflow dyeing machine in no sequence by weight. Wherein the leveling agent is triethanolamine. The bath ratio was 1:45, the mixture was stirred uniformly, and the raw fabric treated at S4 was transferred to an overflow dyeing machine and dyed for 1 hour.

Example 6:

the difference from the example 5 is that the leveling agent is a mixture of polyoxyethylene alkyl phenyl ether phosphate triethanolamine salt and fatty alcohol-polyoxyethylene ether sodium sulfate, and the mass ratio of the leveling agent to the fatty alcohol-polyoxyethylene ether sodium sulfate is 3: 2.

Example 7:

the difference from the example 1 is that in the S7 color fixing step, the emulsifying agent is sodium dodecyl benzene sulfonate and polyvinyl alcohol, and the mass ratio of the sodium dodecyl benzene sulfonate to the polyvinyl alcohol is 8: 3.

Example 8:

the difference from example 1 is that S9: and (6) shaping. The method comprises the steps of scutching the gray fabric dehydrated in the step S7, conveying the gray fabric into a positioning piece for shaping after scutching, adjusting the temperature of a shaping machine to 155 ℃, continuously shaping for 40S, cooling in air after shaping, and cooling to the temperature of the surface of the gray fabric to 25 ℃.

Examples 9 to 12:

the difference from example 4 is that in the S7 fixation step, the raw materials of the fixation composition in parts by weight are shown in table 2. Unit: portions are

TABLE 2

Examples 13 to 16:

the difference from example 5 is that in the dyeing step of S5, the dyes are shown in table 3 in parts by weight. Unit: portions are

TABLE 3

Examples 17 to 18:

the difference from example 1 is that in the fixing step of S7, the length of padding is shown in table 4.

Unit: min

TABLE 4

Examples	Example 17	Example 18
			Mass ratio of	40	60

Examples 19 to 20:

the difference from example 1 is that the temperature adjustment in the setting machine in the step of S9 setting is as shown in Table 5. Unit: DEG C Table 5

Examples	Example 19	Example 20
			Mass ratio of	150	160

Examples 21 to 22:

the difference from example 1 is that the holding time after the temperature adjustment in the setting machine in the step of S9 setting was completed is shown in Table 6. Unit: s

TABLE 6

Examples	Example 21	Example 22
			Mass ratio of	30	50

Example 23:

a cotton cloth dyeing process comprises the following steps of:

s1: and (4) singeing the grey cloth. The grey cloth is conveyed to a singeing machine for singeing, and fluff and thread ends on the surface of the grey cloth are removed, so that the surface of the grey cloth is smooth and clean, and dyeing defects caused by the existence of the fluff during dyeing are prevented.

S2: and (6) desizing. Desizing the singed grey cloth; the method comprises the steps of washing the gray fabric with clear water, conveying the gray fabric into a desizing pool containing desizing liquid to be soaked for 90min after washing is finished, controlling the temperature of the desizing liquid to be 65 ℃ during soaking, wherein the desizing liquid is 15% of soda solution in mass fraction, the using amount of the desizing liquid is 1.3L per kilogram of cotton cloth, and the pH value of the desizing liquid is controlled to be 9.

S3: and (4) bleaching. Washing the grey cloth subjected to the S2 desizing treatment for 15min by using clear water, and bleaching the grey cloth by using bleaching liquid, wherein the bleaching liquid comprises the following substances in parts by weight: 25 parts of sodium hypochlorite, 25 parts of hydrogen peroxide, 13 parts of dichlorobenzyl alcohol and 38 parts of water. The grey cloth is firstly conveyed to a water pool only containing sodium hypochlorite solution, and the water pool is soaked for 80min, wherein the concentration of the sodium hypochlorite is 15 g/L. After the grey cloth is soaked in sodium hypochlorite, the grey cloth is conveyed to a water pool containing hydrogen peroxide, dichlorobenzyl alcohol and water are added into the water pool, and soaking is carried out for 90 min. The concentration of the hydrogen peroxide is 5g/L, the hydrogen peroxide and the dichlorobenzyl alcohol are uniformly mixed in the water pool before the grey cloth is input into the water pool, and then the grey cloth is conveyed into the water pool.

S4: and (6) washing. And (4) conveying the grey fabric processed by the step (S3) to a washing machine for washing with clear water for 30 min.

S5: and (6) dyeing. And conveying the grey cloth processed by the S4 into an overflow dyeing machine for dyeing. Firstly, 43 parts of reactive dye, 9 parts of soda ash, 4.3 parts of anhydrous sodium sulphate, 25 parts of leveling agent, 7 parts of acetic acid, 17 parts of sodium didecyl sulfosuccinate, 10 parts of diethyl succinate, 3 parts of copper chloride and 95 parts of water are added into a dye bucket of an overflow dyeing machine in no sequence by weight. Wherein the leveling agent is a mixture of polyoxyethylene alkyl phenyl ether phosphate triethanolamine salt and fatty alcohol-polyoxyethylene ether sodium sulfate, and the mass ratio of the leveling agent to the fatty alcohol-polyoxyethylene ether sodium sulfate is 3: 2. The bath ratio was 1:45, the mixture was stirred uniformly, and the raw fabric treated at S4 was transferred to an overflow dyeing machine and dyed for 1 hour.

S6: and (5) washing with water. And conveying the grey cloth dyed by the S5 dyeing process into a washing machine for sufficient washing, wherein the washing time is 120 min.

S7: and (5) fixing color. The greige goods after the treatment of S6 was transferred to a padder containing a fixing composition and padded for 45 min. And the color fixing composition comprises the following chemical components in parts by weight: 25 parts of polyvinyl acetal diethylamino acetate, 50 parts of epoxy resin, 35 parts of glyceryl oleate, 10 parts of copper chloride, 14 parts of silanetriol glutamate, 30 parts of emulsifier and 5 parts of diethylamino hydroxybenzoyl hexyl benzoate, wherein the emulsifier is sodium dodecyl benzene sulfonate and polyvinyl alcohol, and the mass ratio of the sodium dodecyl benzene sulfonate to the polyvinyl alcohol is 8: 3. The color fixing composition is prepared into a mixture with water of which the mass fraction is 30%, and the mixture is continuously stirred to ensure that all the substances are uniformly dispersed in the water to obtain a color fixing solution, wherein the usage amount of the color fixing solution is 3L for each kilogram of grey cloth. And after padding, washing the grey cloth for 30min by using clear water.

S8: and (4) dehydrating. And conveying the grey cloth processed by the S7 into a dehydrating machine for dehydrating for 15 min.

S9: and (6) shaping. The method comprises the steps of scutching the gray fabric dehydrated in the step S7, conveying the gray fabric into a positioning piece for shaping after scutching, adjusting the temperature of a shaping machine to 155 ℃, continuously shaping for 40S, cooling in air after shaping, and cooling to the temperature of the surface of the gray fabric to 25 ℃.

S10: and (6) checking. And then the cloth after being processed by the S9 is subjected to defect detection.

And finally, rolling and packaging the treated cotton cloth.

Comparative example 1:

the difference from embodiment 1 is that step S7 is not present.

Comparative example 2:

the difference from example 1 is that each chemical composition of the fixing composition in fixing in step S7 is fixing agent Y.

Comparative example 3:

the difference from example 4 is that there is no diethylamino hydroxybenzoyl hexyl benzoate in the chemical composition of the fixing composition in step S7 fixing.

Comparative example 4:

the difference from example 4 is that in step S7 the fixation composition is free of copper chloride in its chemical composition.

And (3) performance detection:

the cotton cloths obtained in examples 1 to 23 and comparative examples 1 to 4 were tested for color fastness by the following method: washing fastness GB/T3921.1-1997; rubbing fastness (dry rubbing and wet rubbing) GB 3920-83; fastness to perspiration GB/T3922-1995. The detected data are collectively recorded to table 7.

TABLE 7

From table 7, it can be seen from the data of comparative example 2 and example 1 that various color fastnesses of the finally obtained cotton cloth can be improved to different extents by selecting the fixing composition described in example 1.

From the data of example 1 and example 4, it can be concluded that by adding glycerol oleate, copper chloride and silanetriol glutamate to the fixing composition, the various color fastnesses of the finally obtained cotton cloth can be significantly improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.