阅读说明：本技术 一种活性染料潮固色染色方法 (Wet fixation dyeing method of reactive dye ) 是由 毛志平 闫英山 盛守祥 李春光 王力民 徐红 孙红玉 钟毅 吴伟 贾荣霞 王金波 于 2020-06-13 设计创作，主要内容包括：本发明涉及一种活性染料潮固色染色方法,包括如下步骤：将织物浸轧包含活性染料和碱剂的染液、预烘、打卷、堆置。该方法能够降低能耗,解决常规活性染料轧烘轧蒸工艺中无机盐用量较大的问题,改善常规冷轧堆工艺堆置时间较长的技术问题,且采用本发明的方法具有提高的固色率、织物得色深,无色差,不会出现常规冷轧堆染色经常出现的缝头印现象,没有缝头印疵点。进一步的,本发明的活性染料潮固色连续化染色方法还能够用于多组分纤维面料的一步法染色,解决了现有技术中多组分纤维面料的两步法染色工艺复杂、效率低下的弊端,缩短了工艺流程,减少了环境污染,并能够获得色光均匀,布面饱满的染色织物。(The invention relates to a damp color fixing and dyeing method of reactive dye, which comprises the following steps: padding the fabric into a dye solution containing a reactive dye and an alkaline agent, pre-drying, rolling and stacking. The method can reduce energy consumption, solve the problem of large inorganic salt consumption in the conventional reactive dye rolling drying rolling steaming process, and improve the technical problem of long stacking time of the conventional cold pad-batch process. Furthermore, the reactive dye moisture-fixation continuous dyeing method can also be used for one-step dyeing of the multi-component fiber fabric, overcomes the defects of complex two-step dyeing process and low efficiency of the multi-component fiber fabric in the prior art, shortens the process flow, reduces the environmental pollution, and can obtain dyed fabrics with uniform color and full cloth cover.)

1. A moist fixation dyeing method of reactive dyes comprises the following steps: padding the fabric into a dye solution containing a reactive dye and an alkaline agent, pre-drying, rolling and stacking.

2. The method of claim 1, further comprising a water washing step after stacking. Preferably, a soaping step is also included after the water washing. Preferably, a drying step is further included after the soaping.

3. The method according to any one of claims 1 to 2, wherein the reactive dye is selected from one or a mixture of more than two of s-triazine reactive dye, halogenated pyrimidine reactive dye, vinyl sulfone reactive dye, phosphonic acid based reactive dye, alpha-halogenated acrylamide reactive dye and carboxypyridine s-triazine reactive dye. Preferably, the reactive dye is a reactive dye containing two or more reactive groups. Preferably, the reactive dye is a divinyl sulfone reactive dye and a dye containing three or more reactive groups. Preferably, the dosage of the reactive dye in the dye liquor is 1-80 g/L. Preferably, the dosage of the fixation alkali in the dye liquor is 10-80 g/L.

4. A method according to any one of claims 1 to 3, wherein the padding liquor is carried out using an air-pressure gas-film horizontal heavy pad dyeing machine. Preferably, the padding ratio of the fabric into the dye liquor containing the reactive dye and the alkaline agent is 45-100%.

5. The method according to any one of claims 1 to 4, wherein the temperature of the pre-baking step is from 50 ℃ to 90 ℃. Preferably, the moisture content of the cloth cover is controlled to be 5% -40% in the pre-drying step, and preferably, the moisture content of the cloth cover is 15% -30%.

6. The method according to any one of claims 1 to 4, wherein the pre-baking step is an infrared pre-bake. Preferably, the moisture content of the cloth cover is controlled to be 5% -40% in the pre-drying step, and preferably, the moisture content of the cloth cover is 15% -30%.

7. The method according to any one of claims 1-6, said fabric being selected from the group consisting of fabrics comprising cellulose fibers, polyamides, protein fibers. Preferably, the fabric is a blended or interwoven fabric of cellulosic fibers and other fibers. Preferably, the other fibers are selected from one or a mixture of two of polyamide and protein fibers. Preferably, the fabric comprising cellulosic fibers is selected from the group consisting of fabrics comprising one or a mixture of two or more of cotton fibers, viscose fibers, modal fibers. Preferably, the fabric containing polyamide is selected from fabrics containing one or a mixture of more than two of polyamide 56, polyamide 6 and polyamide 66. Preferably, the protein fiber is selected from one or a mixture of two of silk and wool.

Technical Field

The invention relates to a dyeing and color fixing method of reactive dyes, in particular to a damp color fixing method after dyeing of the reactive dyes.

Background

Regarding reactive dye dyeing, at present, the mainly adopted dyeing method is pad dyeing, and the method comprises (1) the technological process with higher use frequency is a pad-drying pad-steaming continuous dyeing method, and the pad dyeing process is widely applicable to large-batch continuous production due to high dyeing efficiency and small water consumption compared with dip dyeing. However, when the rolling, drying, rolling and steaming process is adopted for dyeing, a large amount of inorganic salt and alkali are used in the process, and the inorganic salt on the cloth surface is not easy to clean when the cloth surface is washed, so that the treatment difficulty is increased for sewage treatment, and serious environmental pollution is caused; in addition, the process also has the problems of long production process flow, complex dyeing process, large steam consumption, large energy consumption, high cost and the like. (2) The method is mainly characterized in that the fabric is subjected to padding with a dye liquor and an alkaline agent at low temperature to enable the dye liquor to be adsorbed on the surface of the fiber, and then the fiber is coiled and stacked, stacked for a certain time at room temperature and slowly rotated to finish color fixation. The process has the advantages of short flow, simple equipment, little environmental pollution and energy conservation; but has higher requirements on the selection of the dye, such as good water solubility, low substantivity, good reactivity, good permeability and the like. However, the conventional cold pad-batch process has the problems of long stacking reaction time, slow rotation of a stacking device in the stacking process, poor solubility of water glass in cold water, high alkali agent content, poor dyeing reproducibility, large quality fluctuation and the like, and the cold pad-batch alkaline agent comprises caustic soda, soda ash, water glass and other components.

At present, the printing and dyeing industry is used as a high-energy-consumption and high-pollution industry, pad dyeing active material dyeing occupies most of productivity, and therefore, the change of the high-energy-consumption and high-pollution condition of active pad dyeing is a main development direction of dyeing and finishing technology. Therefore, how to realize salt-free short-process dyeing and obtain dyed fabrics with uniform cloth surface dyeing and higher dyeing yield is a technical problem generally pursued and solved by the prior art.

In addition, the reactive dye is mainly used for dyeing cellulose fibers and blended fabrics or interwoven fabrics thereof, and the fibers of chinlon, real silk, wool and the like are generally dyed by acid dyes. For the blending of the cellulose fiber and other types of fibers, such as the blending of chinlon and cellulose fabric and the blending of real silk and viscose, the two-bath method dyeing is generally adopted, and the two-bath method dyeing has the advantages of long process flow, more energy consumption, large salt consumption and serious environmental pollution. Therefore, in the prior art, the one-bath dyeing of various fiber fabric reactive dyes is also needed to be realized aiming at the defect of the two-bath dyeing of multi-component fibers.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a method for continuous dyeing of active dye by wet fixation, which can reduce energy consumption, solve the problems of large inorganic salt consumption and poor permeability in the conventional active dye rolling, drying, rolling and steaming process, improve the problems of dark color, heavy black gas and the like in the conventional cold pad-batch process, and has the advantages of improved fixation rate, deep fabric color, no color difference, no stitch mark phenomenon and no stitch mark defects. Furthermore, the reactive dye moisture-fixation continuous dyeing method can also be used for one-step dyeing of the multi-component fiber fabric, overcomes the defects of complex two-step dyeing process and low efficiency of the multi-component fiber fabric in the prior art, shortens the process flow, reduces the environmental pollution, and can obtain dyed fabrics with uniform color and full cloth cover.

The invention relates to a damp color fixing and dyeing method of reactive dye, which comprises the following steps: padding the fabric into a dye solution containing a reactive dye and an alkaline agent, pre-drying, rolling and stacking.

Preferably, a water washing step is further included after stacking.

Preferably, a soaping step is also included after the water washing.

Preferably, a drying step is further included after the soaping.

Preferably, the reactive dye is one or a mixture of more than two of s-triazine reactive dye, halogenated pyrimidine reactive dye, vinyl sulfone reactive dye, phosphonic acid group reactive dye, alpha-halogenated acrylamide reactive dye and carboxypyridine s-triazine reactive dye.

Preferably, the reactive dye is a reactive dye containing two or more reactive groups.

Preferably, the reactive dye is a divinyl sulfone reactive dye and a reactive dye containing three or more reactive groups.

Preferably, the dosage of the reactive dye in the dye liquor is 1-80 g/L.

Preferably, the dosage of the fixation alkali in the dye liquor is 10-80 g/L.

Preferably, the fabric is padded with a dye liquor containing a reactive dye and an alkaline agent by using an air-pressure air film type horizontal heavy padding machine.

Preferably, the padding ratio of the fabric into the dye liquor containing the reactive dye and the alkaline agent is 45-100%.

Preferably, the temperature of the pre-drying step is 50-90 ℃, and preferably, the pre-drying step is infrared pre-drying.

Preferably, the moisture content of the cloth cover is controlled to be 5% -40% in the pre-drying step, and preferably, the moisture content of the cloth cover is 15% -30%.

Preferably, the fabric is selected from the group consisting of cellulosic fibers, polyamides, protein fibers.

Preferably, the fabric is a blended or interwoven fabric of cellulosic fibers and other fibers.

Preferably, the other fibers are selected from one or a mixture of two of polyamide and protein fibers.

Preferably, the fabric comprising cellulosic fibers is selected from the group consisting of fabrics comprising one or a mixture of two or more of cotton fibers, viscose fibers, modal fibers.

Preferably, the fabric containing polyamide is selected from fabrics containing one or a mixture of more than two of polyamide 56, polyamide 6 and polyamide 66.

Preferably, the protein fiber is selected from one or a mixture of two of silk and wool.

The beneficial effect of the invention is that,

(1) compared with the conventional rolling, drying, rolling and steaming process, the process flow is improved from original rolling → drying → rolling → steaming to rolling → pre-drying → rolling, the processes of padding active material vapor, liquid and steaming are reduced during the proofing operation, the process flow is shortened, equipment units are reduced, the equipment is simplified, and the steam consumption is reduced and the production cost is reduced because the steaming process is not used.

(2) The reactive dye is applied with the color fixing alkali in one bath, and no inorganic salt or less inorganic salt is added, so that salt-free or less salt dyeing of the reactive dye is realized.

(3) After the padding dye working solution is adopted, the fabric is pre-dried until the moisture content of the cloth surface is 5% -40%, and the fabric does not contain free moisture in the process of rolling and stacking, so that the fixation rate of the dye is increased, the fabric is deeply dyed, and the dye does not contain free moisture and cannot migrate, so that the color difference of the fabric from left to right can be effectively avoided; moreover, because the fabric does not contain free moisture, the swelling effect of the fabric can be reduced, the free moisture is not contained at the fabric seam, the seam printing phenomenon cannot occur, and the fabric has no seam printing defects; the fabric roll does not need to rotate continuously in the stacking process.

(4) The dyeing method provided by the invention is flexible in variety, can be suitable for different batches of order production, and can be freely switched according to the order condition. The reactive dye can be used for dyeing fabrics of chinlon 56, silk, wool and the like instead of acid dye. When the method is used for dyeing blended or interwoven fabrics of cellulose fibers and other fibers, the reactive dye can be dyed by one step instead of the two-step dyeing in the past, the process flow is shortened, the resource waste and the environmental pollution are reduced, the cloth cover is full after dyeing, the double-color phenomenon is avoided, and compared with the conventional rolling, drying, rolling, steaming and cold pad-batch dyeing process, the process has higher dye utilization rate.

Detailed Description

The invention aims to solve the technical problem of providing a continuous dyeing method for active dye moisture fixation, which can reduce energy consumption, solve the problem of large inorganic salt consumption in the conventional active dye rolling drying rolling steaming process and improve the technical problem of long stacking time of the conventional cold pad-batch process. Furthermore, the reactive dye moisture-fixation continuous dyeing method can also be used for one-step dyeing of the multi-component fiber fabric, overcomes the defects of complex two-bath dyeing process and low efficiency of the multi-component fiber fabric in the prior art, shortens the process flow, reduces the environmental pollution, and can obtain dyed fabrics with uniform color and full cloth cover.

The invention relates to a moist color-fixing continuous dyeing method of reactive dye, which comprises the following steps: padding the fabric into a dye solution containing a reactive dye and an alkaline agent, pre-drying, rolling and stacking. In some embodiments, a water washing step is also included after stacking. In some embodiments, a soaping step is also included after the water wash. In some embodiments, a drying step is also included after soaping. In some embodiments, the wet-fixation continuous dyeing method of the reactive dye comprises the following steps: padding the fabric with dye liquor containing reactive dye and alkaline agent, pre-drying, rolling, stacking, washing, soaping, washing and drying.

Reactive dyes

In some embodiments, the reactive dye employed in the present invention may be any of those known in the art. For example, the reactive dye of the present invention is one or a mixture of two or more selected from the group consisting of s-triazine reactive dye, halogenated pyrimidine reactive dye, vinyl sulfone reactive dye, phosphonic acid-based reactive dye, α -halogenated acrylamide reactive dye, and carboxypyridine s-triazine reactive dye.

In some embodiments, the s-triazine reactive dye includes a dichloro-s-triazine reactive dye, a monochloro-s-triazine reactive dye, a monofluoro-s-triazine reactive dye, and the like.

In some embodiments, the halogenated pyrimidine-type reactive dye is selected from trichloropyrimidine-type reactive dyes, difluoromonochloropyrimidine-type reactive dyes, dichloromonofluoropyrimidine-type reactive dyes, monochloropyrimidine-type reactive dyes, and the like.

In some embodiments, the vinyl sulfone-type reactive dye is a bis-vinyl sulfone-based reactive dye, Remazol (Remazol), KN-type reactive dye, or the like.

In some embodiments, the reactive dye is a reactive dye containing two or more reactive groups. In some embodiments, the reactive dye containing two or more reactive groups is a reactive dye containing two or more vinyl sulfone groups, a reactive dye containing monochlorotriazine groups and vinyl sulfone groups, a reactive dye containing monofluoros-triazine groups and vinyl sulfone groups, or a reactive dye containing two or more monochlorotriazine groups.

In some embodiments, the reactive group of the reactive dye comprising monochlorotriazine groups and vinylsulfone groups is monochlorotriazine and vinylsulfone (or β -sulfatoethylsulfone), such as M-type, ME-type, Megafix-type B, EF-type, Sumifix Supra-type, Remazol S-type, and the like. In some embodiments, the reactive dye comprising monochlorotriazine groups and vinyl sulfone groups is a Cibacron type C reactive dye. In some embodiments the reactive dye comprising two or more monochlorotriazine groups is a KE-type, KP-type reactive dye.

In some embodiments, the amount of reactive dye in the dye liquor can be determined according to the dyeing depth required, and generally speaking, the amount of reactive dye in the dye liquor is 1-80 g/L.

Color fixing agent

In some embodiments, the fixing agent employed is a fixing alkaline agent, specifically including baking soda, soda ash, caustic soda, trisodium phosphate, sodium metasilicate, and the like.

Other auxiliaries

In some embodiments, for dyes with lower solubility or where higher dye concentrations are desired, urea can be added to aid dissolution, and urea can be added to the fiber to swell, with an aqueous solution having greater swelling capacity for the fiber than pure water.

In some embodiments, an electrolyte may be added to act as a dye promoter. The electrolyte is a neutral electrolyte, such as sodium sulfate, sodium chloride, and the like. The addition of the electrolyte can improve the adsorption rate and the adsorption quantity of the dye and the adsorption density on the fiber in the padding process, and improve the color fixing rate. The amount of electrolyte added is known in the art and should not be too high, which would increase dye aggregation in the solution and affect dye uniformity.

Padding in a dip

The method for padding the fabric with the mixed dye solution of the reactive dye and the alkaline agent and respectively padding the fabric with the dye solution and the alkaline agent can adopt any equipment in the prior art to realize padding treatment. Preferably, the fabric is padded with a dye liquor containing a reactive dye and an alkaline agent by using an air-pressure air film type horizontal heavy padding machine.

In some embodiments, the padding ratio of the fabric in the mixed dye liquor of the reactive dye and the alkaline agent, the dye solution and the alkaline agent are padded respectively is 30-120%, and preferably 45-100%.

Preliminary baking step

In some embodiments, the temperature of the pre-baking step is from 40 ℃ to 90 ℃. In some embodiments, the pre-bake is an infrared pre-bake.

In some embodiments, the pre-drying step controls the moisture content of the cloth cover to be 5% to 45%, preferably, the moisture content of the cloth cover is 15% to 30%. The moisture content of the cloth cover after the pre-drying step is controlled within the range of 5% -45%, because the fabric is pre-dried to the moisture content of the cloth cover of 15% -30% after padding with the dye working solution, and the fabric does not contain free water in the process of rolling and stacking, the following excellent effects can be brought for dyeing:

(1) after the padding dye working solution is adopted, the fabric is pre-dried until the moisture content of the fabric surface is 15% -30%, free water is not contained in the fabric in the process of rolling and stacking, the dye cannot migrate, and the left-middle-right color difference of the fabric is effectively avoided.

(2) After padding the dye working solution, the fabric is pre-dried until the moisture content is 15% -30%, free water is not contained in the fabric in the rolling and stacking process, the swelling effect of the fabric is reduced, the phenomenon of seam mark cannot occur, and the fabric has no seam mark defects.

(3) After the padding dye working solution is used, the fabric is pre-dried until the moisture content is 15% -30%, the fabric does not contain free moisture in the rolling and stacking process, and the fabric roll does not need to rotate ceaselessly in the stacking process.

(4) After padding the dye working solution, the fabric is pre-dried until the moisture content is 15% -30%, free moisture is not contained in the fabric in the rolling and stacking process, and the hydrolysis of the dye is reduced, so that the fixation rate of the dye is increased, and the fabric is dark in color.

Stacking step

The invention has no harsh requirement on the temperature of the stacking environment, can adapt to a wide temperature range, and can compensate the change of the temperature of the stacking environment by adjusting the stacking time; when the stacking environment temperature is high, the stacking time can be reduced; when the stacking environment temperature is low, the stacking time can be increased; the invention can properly adjust the stacking time according to the temperature of the stacking environment so as to achieve the color obtaining effect of the cloth surface.

In some embodiments, the stacking temperature of the stacking step is from 10 ℃ to 70 ℃, more preferably from 25 ℃ to 50 ℃.

In some embodiments, the stacking step has a stacking time of 2h to 72h, more preferably 4h to 24 h.

In some embodiments, the roll of fabric need not be continuously rotated during the stacking process. After the padding dye working solution is used, the fabric is pre-dried until the moisture content is 15% -30%, and the fabric does not contain free moisture in the rolling and stacking process, so that the fabric roll does not need to rotate continuously in the stacking process preferably.

Dyed fabric

The invention can be used for dyeing various fiber fabrics, such as cellulose fiber fabrics, polyamide fiber fabrics, protein fiber fabrics and the like.

In addition, the invention can also be applied to the dyeing of cellulose fiber and blended fabrics or interwoven fabrics thereof. Because most of the traditional polyamide fibers and protein fibers are dipped and dyed by acid dyes, the method overcomes the prior technical bias, can realize the padding dyeing of the polyamide fibers and the protein fibers by using reactive dyes, and can obtain good dyeing effect.

The process of the invention is therefore also suitable for the one-step dyeing of blended or interwoven fabrics of cellulose fibres and polyamide fibres or protein fibres. Because in the prior art, in order to achieve good dyeing effect of the blended or interwoven fabric, a two-step method is generally adopted, and reactive dyes and acid dyes are respectively adopted for dyeing, so that the dyeing process flow is long. After the method is adopted, the dyeing of the blended or interwoven fabric can be realized by using the reactive dye padding dyeing process of the one-step method, a good dyeing effect is obtained, the double-color phenomenon is avoided, and compared with the conventional padding drying padding steaming process, the process has higher dye utilization rate.

Thus, in some embodiments, the fabric is a blended or interwoven fabric of cellulosic fibers and other fibers. The other fiber is selected from one or a mixture of two of polyamide and protein fiber. The fabric containing the cellulose fiber is selected from one or a mixture of more than two of cellulose fibers such as cotton fiber, viscose fiber, modal fiber and the like. The fabric containing polyamide is selected from fabric containing one or mixture of more than two of polyamide 56, polyamide 6 and polyamide 66. The protein fiber is selected from one or a mixture of two of silk and wool.

In some more specific embodiments, the fabric dyed by the dyeing method of the present invention is polyamide 56, polyamide 56/cotton, viscose, modal, silk/viscose blend, wool/polyamide 56 blend.

Experimental methods

And (3) testing items: the color fixing and dyeing process includes material composition of the moisture fixing and dyeing fabric, K/S value of the dyed fabric, dyeing uniformity, soaping fastness, rubbing fastness, ironing fastness, perspiration fastness, chlorine washing fastness, light fastness, perspiration-light composite fastness, head sewing printing and the like.

Method for testing material quality of damp-fixation dyed yarn

The same dye formula is adopted, the K/S value of the dyed fabric in the conventional pad-drying pad-steaming dyeing process is selected as a reference, the K/S value of the damp-fixed dyed fabric is used for removing the K/S value of the pad-drying pad-steaming dyed fabric, and the obtained percentage is defined as the material resource of the damp-fixed dyed fabric.

Method for testing K/S value (characterization color depth)

The test was performed using a Datacolor color measurement system. Under the conditions that the ambient temperature is 20 +/-2 ℃ and the relative humidity is 65 +/-2%, four layers of fabrics are stacked, color measurement is started, during testing, a computer color matching system calculates the brightness difference (CIE DL), the red/green difference (CIE Da), the yellow/blue difference (CIE Db), the saturation difference (CIE DC), the hue difference (CIE DH) and the comprehensive color difference (CIE DE) of a standard sample and a test sample through the reflectivity of different wavelengths by using a CIELAB formula, and the data can be directly read from Datecolor color measurement data.

Dyeing uniformity testing method

And testing the left, middle and right K/S values of the fabric by adopting a Datecolor color measurement system, selecting the K/S value at the middle position of the cloth sample as a reference, and determining whether the fabric has the problem of left, middle and right color difference by comparing the K/S values at the left, middle and right positions of the fabric.

Soaping fastness testing method

The test was carried out according to the textile soaping fastness standard AATCC 61-2A. The method simulates manual, household or commercial washing modes, washes dyed fabrics for a certain time under the conditions of specified temperature, detergent, bleaching, friction and the like, observes the color change of a sample, and evaluates the change of the sample and the staining grade of the attached lining fabric by using a gray sample card.

Friction fastness testing method

The test was carried out according to the crockfastness standard AATCC 8. The color transfer to the white rubbing cloth can be determined by comparing with a stained gray card or 9-grade colored stained gray to determine the dry and wet rubbing fastness grade.

Method for testing ironing fastness

The test is carried out according to the ironing fastness standard GB-T6152. Simulating a household iron, heating the iron to a certain temperature (different fabric temperatures), sewing the corresponding lining cloth with the fabric, and judging the grade according to ironing discoloration and ironing staining.

Testing method for perspiration fastness

The test is carried out according to the perspiration colour fastness standard GB-T3922. The textile and the specified lining fabric are put together, soaked in artificial sweat containing amino acid for 30min, put in a test device with certain pressure, and then put in a baking oven at 38 ℃ for drying for 4 hours, after the sample and the lining fabric are dried, the color change of the sample and the staining degree of the lining fabric are evaluated by a gray sample card, namely the color change and staining grade of the sweat stain fastness of the fabric.

Method for testing fastness to chlorine washing

The test was carried out according to the fastness to chlorine test standard AATCC 61-4A. Preparing 0.15% available chlorine solution, soaking the fabric in the solution, standing at 71 deg.C for 45min, cleaning, ironing, drying, comparing with original sample, and grading.

Method for testing light fastness

The test was carried out according to the light fastness test standard AATCC 16. The fabrics were rated in comparison to the original after 20AFU exposure under simulated sun exposure conditions.

Testing method for perspiration-light composite fastness

The test was carried out according to the test standard for perspiration-light combination fastness AATCC 125. After being treated by artificial sweat, the fabric is placed in a simulated sun drying condition, is sun-dried for 20AFU under the condition that the water content is 100 percent, and is graded according to the fading degree of the fabric before and after the fabric is dyed.

Method for detecting sewing mark

The seam mark defects are observed in a visual inspection mode, and whether regular transverse strip-shaped color difference occurs in upper and lower layers of fabrics in a fabric roll, which are in contact with the seam of the fabrics, is observed.

Detailed Description

Example 1 and comparative example 1: respectively adopting a damp color fixing dyeing method and a traditional rolling drying rolling steaming process to dye cellulose fiber Fabric (different dye dosage)

Fabric: pure cotton fabric, specification: c20 s × 16s 128 × 6057/8', checkerboard

In the examples and the comparative example 1, the annomin navy blue L-3G, the annomin yellow L-3R and the annomin red L-S are selected for color matching, and the weight proportions of the three dyes are as follows:

annuosu dark blue L-3G 86%

Annuosu yellow L-3R 6.5%

Annuosu red L-S7.5%

The dye concentrations and fixing base compositions and amounts used in example 1 and comparative example 1 are shown in table 1.

The wet fixation process flow adopted in example 1:

weighing (respectively weighing a dye and a fixation alkali according to a process prescription) → a material melting (material melting of the dye in one material melting cylinder; material melting of caustic soda and soda in the other material melting cylinder to prepare a fixation alkali solution) → charging (adding a dye solution and a fixation alkali solution into the same padding trough through a proportioning pump according to a ratio of 4: 1) → padding a mixed solution of the dye and the fixation alkali (a padding rate of 65%) → pre-drying (80 ℃, a cloth surface moisture content of which is controlled by 20%) → synchronous rolling → plastic film sealing → stacking (a stacking temperature of 30 ℃, a stacking time of 24h) → water washing → water washing → drying.

Comparative example 1 traditional Rolling drying Rolling steaming technological process

Weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding trough → padding a dyeing solution (a padding rate of 65%) → drying (80 ℃) → adding a color fixing solution into a second padding trough → padding a color fixing solution (a padding rate of 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying.

The index-to-effect ratios of dyeing effects of example 1 and comparative example 1 are shown in table 1.

Table 1 dye concentrations and fixation base compositions and amounts in example 1 and comparative example 1

The force parts in the table above are calculated in such a way that the K/S values of the respective examples correspond to the K/S values of the corresponding comparative examples, e.g. the force parts of example 1-1 are 3.45 for the K/S value of example 1-1 divided by 3.12 for the K/S value of comparative example 1-1 being 110.6%, and the force parts of example 1-2 are 6.76 for the K/S value of example 1-2 divided by 6.01 for the K/S value of comparative example 1-2 being 112.5%. Therefore, all comparative examples have a force share of 100%.

As can be seen from Table 3, the K/S value of example 1 adopting the wet color fixing method is generally higher than the K/S value of the traditional pad-drying pad-steaming dyeing process, and the wet color fixing method does not use sodium chloride in example 1, but 200g/L of sodium chloride is added in the traditional pad-drying pad-steaming dyeing process in the color fixing stage, so that the wet color fixing method not only realizes salt-free dyeing, but also has better color depth than the traditional pad-drying pad-steaming dyeing process.

Example 2 and comparative example 2: respectively adopting a damp color fixing dyeing method and a traditional rolling drying rolling steaming process to dye cellulose fiber Fabric (different cold rolling pile process)

Fabric: pure cotton fabric, specification: c20 s × 16s 128 × 6057/8', checkerboard

The dyeing liquors of example 2 and comparative example 2 were both formulated as follows: desdamascenone RGB golden 20 g/L;

the fixing base formulation of example 2 was: 6g/L of caustic soda and 20g/L of soda ash;

the fixing base formulation of comparative example 2 was: 6g/L of caustic soda, 20g/L of soda ash and 200g/L of sodium chloride;

the wet fixation process of example 2:

weighing (respectively weighing a dye and a fixation alkali according to a process prescription) → a material melting (material melting of the dye in one material melting cylinder; material melting of caustic soda and soda in the other material melting cylinder to prepare a fixation alkali solution) → charging (adding a dye solution and a fixation alkali solution to the same padding trough through a proportioning pump according to a ratio of 4: 1) → padding a mixed solution of the dye and the fixation alkali (a padding rate of 65%) → pre-drying (90 ℃, a cloth surface moisture content of 30%) → synchronous rolling → plastic film sealing → stacking (specific stacking conditions are shown in table 2) → water washing → water washing → drying soap.

The rolling drying rolling steaming dyeing process flow of the comparative example 2 is as follows:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding trough → padding a dyeing solution (a padding rate of 65%) → drying (80 ℃) → adding a color fixing solution into a second padding trough → padding a color fixing solution (a padding rate of 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying.

The wet fix dyeing effect of example 2 at different stack temperatures and stack times and the dyeing effect of comparative example 2 are shown in table 4.

Table 2 comparison of dyeing effect indexes of example 2 and comparative example 2

	Stacking temperature (. degree. C.)	Stacking time (h)	K/S value	Strength (%)
					Example 2-1	25	36	12.53	105
Examples 2 to 2	30	24	12.72	106.8
					Examples 2 to 3	40	12	12.98	108.8
Examples 2 to 4	50	4	13.63	114.2
					Examples 2 to 5	60	2	12.64	106
Examples 2 to 6	70	2	12.04	100.9
					Comparative example 2	Is free of	Is free of	11.93	100

Example 3 and comparative example 3: respectively adopting a damp color fixing dyeing method and a traditional rolling drying rolling steaming process to dye cellulose fiber Fabric (moisture content of different fabrics)

Fabric: pure cotton fabric, specification: c20 s × 16s 128 × 6057/8', checkerboard

The dyeing liquors of example 3 and comparative example 3 were both formulated as follows: desdamascenone RGB dark blue 20 g/L;

the fixing base formulation of example 3 was: 6g/L of caustic soda and 20g/L of soda ash;

the fixing base formulation of comparative example 3 was: 6g/L of caustic soda, 20g/L of soda ash and 200g/L of sodium chloride;

the wet fixation process of example 3:

weighing (respectively weighing a dye and a fixation alkali according to a process prescription) → a material melting (material melting of the dye in one material melting cylinder; material melting of caustic soda and soda in the other material melting cylinder to prepare a fixation alkali solution) → charging (adding a dye solution and a fixation alkali solution to the same padding trough through a proportioning pump according to a ratio of 4: 1) → padding a mixed solution of the dye and the fixation alkali (a padding rate of 80%) → pre-drying (90 ℃, controlling a moisture content of a cloth surface, and specifically shown in table 3) → synchronous rolling → plastic film sealing → stacking (30 ℃, 24h) → water washing → water washing → drying soap.

Comparative example 4 rolling, drying, rolling, steaming and dyeing process flow:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding trough → padding a dyeing solution (a padding rate of 80%) → drying (80 ℃) → adding a color fixing solution into a second padding trough → padding a color fixing solution (a padding rate of 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying.

Example 3 the effect of the different moisture content of the pre-dried fabrics on the wet-fix dyeing and the dyeing effect of comparative example 3 are shown in table 3.

Table 3 comparison of dyeing effect indexes of example 3 and comparative example 3

Wherein the values for CIE DL, CIE Da, CIE Db, CIE DC, CIE DH, CIE DE, CMC DE are the values corresponding to the dyed fabric of example 3 minus the values corresponding to the dyed fabric of comparative example 3.

Example 4 and comparative example 4: respectively adopting a damp color fixing dyeing method and a traditional rolling drying rolling steaming process to dye cellulose fiber Fabric (different dye liquor formula)

Fabric: pure cotton fabric, specification: c20 s × 16s 128 × 6057/8', checkerboard

The dyeing liquor formulation and fixing base formulation of example 4 are shown in table 4 below.

TABLE 4-1 dyeing conditions for example 4 and comparative example 4

Example 4 wet fixation process flow:

weighing (respectively weighing the dye and the fixation alkali according to a process prescription) → melting (melting the dye in one melting tank; melting the caustic soda and the soda ash in the other melting tank to prepare a fixation alkali solution) → charging (adding the dye solution and the fixation alkali solution into the same padding tank according to a ratio of 4:1 by a proportioning pump) → padding the mixed solution of the dye and the fixation alkali (the padding ratio is shown in table 4) → pre-drying (the pre-drying temperature is shown in table 4, and the moisture content of the cloth surface is controlled to be 20% -30%) → synchronous rolling → plastic film sealing → stacking (the stacking temperature is 30 ℃ -40 ℃, and the stacking time is 24h) → washing → water → drying.

Comparative example 4 rolling, drying, rolling, steaming and dyeing process flow:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding trough → padding a dyeing solution (a padding rate of 65%) → drying (80 ℃) → adding a color fixing solution into a second padding trough → padding a color fixing solution (a padding rate of 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying.

The index comparison of dyeing effect of example 4 and comparative example 4 is shown in Table 4-2.

Table 4-2 comparison of dyeing effect of example 4 with comparative example 4

Comparing the dyeing data of example 4 and proportion 4 in table 4-2, it can be seen that the dyeing effect of the wet color fixing process is better than that of the rolling, drying, rolling and steaming, the color yield is equal to or higher than that of the conventional rolling, drying, rolling and steaming dyeing process, the color fastness can fully reach the technological level of the rolling, drying, rolling and steaming, and part of indexes such as dry rubbing fastness, perspiration-light complex fastness, light fastness and the like are better than that of the rolling, drying, rolling and steaming dyeing mode. The dyeing process of the moisture fixation process has no left, middle and right color difference, uniform cloth cover and seamless head print.

Example 5 and comparative example 5: respectively adopting a damp color fixing dyeing method and a traditional rolling drying rolling steaming process to dye polyamide fiber Fabric (different reactive dyes)

Fabric: nylon 56, specification: 21s × 21s 66 × 4557/8', checkerboard

The dye types, amounts, and amounts of the fixing bases of example 5 and comparative example 5 are shown in Table 7-1.

TABLE 5-1 dyeing conditions for example 5 and comparative example 5

The wet fixation dyeing process flow of example 5:

weighing (respectively weighing a dye and a fixation alkali according to a process prescription) → a material melting (material melting of the dye in one material melting cylinder; material melting of caustic soda and soda in the other material melting cylinder to prepare a fixation alkali solution) → charging (adding a dye solution and a fixation alkali solution into the same padding trough through a proportioning pump according to a ratio of 4: 1) → padding a mixed solution of the dye and the fixation alkali (a padding rate of 90%) → pre-drying (70 ℃, a cloth surface moisture content of 30%) → synchronous rolling → plastic film sealing → stacking (a stacking temperature of 50 ℃, a stacking time of 4h) → water washing → water washing → drying. Obtaining the dyed chinlon 56 fabric.

Comparative example 5 rolling, drying, rolling, steaming and dyeing process flow:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding tank → padding a dyeing solution (a padding ratio of 90%) → drying (80 ℃) → adding a color fixing solution into a second padding tank → padding a color fixing solution (a padding ratio of 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying. Obtaining the chinlon 56 fabric after rolling, drying, rolling, steaming and dyeing.

The dyeing effect data of examples 5-1, 5-3, 5-5 are shown in Table 5-2. Wherein the values for CIE DL, CIE Da, CIE Db, CIE DC, CIE DH, CIE DE, CMC DE are obtained by subtracting the values for the dyed fabrics of comparative examples 5-1, 5-3, 5-5 from the values for the dyed fabrics of examples 5-1, 5-3, 5-5. These parameters characterize the difference in dyeing results of the samples obtained using the wet fix dyeing method of the present application versus the dyeing results of comparative examples 5-1, 5-3, 5-5, relative to the pad-bake pad-steam dyeing method of comparative examples 5-1, 5-3, 5-5.

TABLE 5-2 dyeing Effect of examples 5-1, 5-3, 5-5

As can be seen from the comparison of the data in the above table 5-2, the nylon 56 is dyed by the damp fixation dyeing process, the color yield is generally superior to the effect of the rolling, drying, rolling and steaming dyeing process, and the color yield is improved by more than 20%.

The color fastness indexes of example 5-1, example 5-3 and example 5-5 and comparative example 5-1, comparative example 5-3 and comparative example 5-5 are shown in Table 5-3. As can be seen from the data in tables 5-3, the dyeing effect of the wet color fixing process is better than that of the rolling, drying, rolling and steaming, the color fastness can completely reach the technological level of the rolling, drying, rolling and steaming, and part of indexes such as original color change, dry rubbing fastness, perspiration and light composite fastness are better than that of the rolling, drying, rolling and steaming dyeing mode.

TABLE 5-3 color fastness indexes of examples 5-1, 5-3, 5-5 and comparative examples 5-1, 5-3, 5-5

Example 6 and comparative example 6, respectively, a wet fixation dyeing process and a conventional pad-bake pad-steam process were used to dye polyamide fibers Fiber/cellulose fiber blended fabric

Fabric: nylon 5665/long stapled cotton 35, specification: 32sx32s 122x 6057/8', checked cloth

The kind and amount of the dye and the kind and amount of the fixing alkaline agent in example 6 and comparative example 6 are shown in the following table 6-1.

TABLE 6-1 dyeing conditions for example 6 and comparative example 6

The wet fixation dyeing process flow of example 6:

weighing (respectively weighing a dye and a fixation alkali according to a process prescription) → a material melting (material melting of the dye in one material melting cylinder; material melting of caustic soda and soda in the other material melting cylinder to prepare a fixation alkali solution) → charging (adding a dye solution and a fixation alkali solution to the same padding trough through a proportioning pump according to a ratio of 4: 1) → padding a mixed solution of the dye and the fixation alkali (a padding rate of 90%) → pre-drying (infrared pre-drying, controlling a cloth surface moisture rate of 30%) → synchronous rolling → plastic film sealing → stacking (a stacking temperature of 50 ℃, a stacking time of 4h) → water washing → water washing → drying. Obtaining the dyed chinlon 56/cotton blended fabric.

Comparative example 6 rolling, drying, rolling, steaming and dyeing process flow:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in a melting material cylinder; melting materials of caustic soda, soda ash and sodium chloride in another melting material cylinder to prepare a color fixing solution) → adding a dye solution into a first padding trough → padding a dyeing solution (a padding ratio of 90%) → drying (80 ℃) → adding a color fixing solution into a second padding trough → padding a color fixing solution (a padding ratio of 100%) → steaming (102 ℃ x 70') → washing with water → soaping → washing with water → drying. The chinlon 56/cotton blended fabric after rolling, drying, rolling, steaming and dyeing is obtained.

The dyeing effect data of example 6-1, example 6-3 and example 6-5 are shown in Table 6-2. Where the values are CIE DL, CIE Da, CIE Db, CIE DC, CIE DH, CIE DE, CMC DE using the fabrics dyed in comparative examples 6-1, 6-3 and 6-5 as standard color test samples, these parameters characterize the difference in the dyeing results of the samples obtained using the wet fix dyeing method of the present application from the dyeing results of comparative examples 6-1, 6-3 and 6-5 relative to the dyeing using the pad-bake pad-steam method of comparative examples 6-1, 6-3 and 6-5.

From the experimental data in Table 6-2, it can be seen that the examples have a darker dyeing effect than the comparative examples.

TABLE 6-2 dyeing Effect of examples 6-1, 6-3, 6-5

Example 7 and comparative example 7 different kinds of fabrics were dyed using the wet fixation dyeing method and the conventional dyeing method, respectively

The laking base formulations in example 7 were all: 6g/L of caustic soda and 20g/L of soda ash;

the fixing bases in comparative example 7 were all in the following formula: 6g/L of caustic soda, 20g/L of soda ash and 200g/L of sodium chloride;

the dye amount in example 7 and comparative example 7 was 20 g/L.

The fabric types and dyeing types of example 7 and comparative example 7 are shown in Table 7.

The dyeing liquor formulations and fixing base formulations of example 7 and comparative example 7 are shown in table 7.

Table 7-1 dyeing liquor formulation, fixing base formulation and dyeing process of example 7 and comparative example 7

The wet fixation dyeing process flow of example 7:

weighing (respectively weighing the dye and the fixation alkali according to a process prescription) → melting (melting the dye in one melting tank; melting the caustic soda and the soda ash in the other melting tank to prepare a fixation alkali solution) → charging (adding the dye solution and the fixation alkali solution to the same padding tank through a proportioning pump according to a ratio of 4: 1) → padding the mixed solution of the dye and the fixation alkali (the retention rate is shown in a table 7-1) → pre-drying (the pre-drying temperature and the moisture content of the cloth surface are shown in a table 7-1) → synchronous rolling → plastic film sealing → stacking (the stacking temperature and the stacking time are shown in a table 7-1) → water washing → water washing → drying. Obtaining the real silk fabric dyed by the active dye through moisture fixation.

The rolling drying rolling steaming dyeing process flow of the comparative example 7 is as follows:

weighing materials (weighing dyes and caustic soda, soda ash and sodium chloride respectively according to a process formula) → melting materials (melting materials of dyes in one melting cylinder, melting materials of caustic soda, soda ash and sodium chloride in the other melting cylinder to prepare a color fixing solution) → adding a dye solution into a first padding tank → padding a dyeing solution (the padding ratio is 100%) → drying (80 ℃) → adding a color fixing solution into a second padding tank → padding a color fixing solution (the padding ratio is 100%) → steaming (102 ℃, 70s) → washing with water → soaping → washing with water → drying. Obtaining the real silk fabric dyed by rolling, drying, rolling and steaming with the reactive dye.

The dyeing effect of example 7 is shown in Table 7-2. The values of CIE DL, CIE Da, CIE Db, CIE DC, CIE DH, CIE DE and CMC DE are measured by using the fabric dyed in the corresponding proportion 7 as a standard sample, and the parameters represent the difference between the dyeing results of the sample obtained by the damp fixation dyeing method of the application and the corresponding dyeing results of the corresponding proportion 7 compared with the pad-drying pad-steaming method for dyeing in the corresponding proportion 7.

Table 7-2 comparison of dyeing effect indexes of example 7 and comparative example 7

The data in table 7-2 show that the moisture fixation process dyes the reactive dyes of real silk/viscose fabrics and wool/chinlon fabrics, compared with the normal rolling, drying, rolling and steaming process, the dyed fabrics have uniform cloth surface, higher color yield and improved quality by more than 10 percent, the process does not use inorganic salt, the use amount of fixation alkali is small, the process is short, and meanwhile, the process is applied to successfully solve the problem of 'double colors' of the cloth surface of the dyed fabrics in the rolling, drying, rolling and steaming process of the reactive dyes of the fabrics.