CN114182466A - Variable continuous dyeing method of sizing and dyeing combination machine - Google Patents
Variable continuous dyeing method of sizing and dyeing combination machine Download PDFInfo
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- CN114182466A CN114182466A CN202111436225.8A CN202111436225A CN114182466A CN 114182466 A CN114182466 A CN 114182466A CN 202111436225 A CN202111436225 A CN 202111436225A CN 114182466 A CN114182466 A CN 114182466A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 288
- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000004513 sizing Methods 0.000 title claims abstract description 48
- 238000010014 continuous dyeing Methods 0.000 title claims abstract description 34
- 238000011282 treatment Methods 0.000 claims abstract description 134
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 claims abstract description 59
- 239000004744 fabric Substances 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 36
- 238000002791 soaking Methods 0.000 claims abstract description 28
- 230000008595 infiltration Effects 0.000 claims abstract description 16
- 238000001764 infiltration Methods 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims description 85
- 238000007254 oxidation reaction Methods 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 238000005406 washing Methods 0.000 claims description 74
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 44
- COHYTHOBJLSHDF-BUHFOSPRSA-N indigo dye Chemical compound N\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-BUHFOSPRSA-N 0.000 claims description 38
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 108010059892 Cellulase Proteins 0.000 claims description 15
- 229940106157 cellulase Drugs 0.000 claims description 15
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 10
- 238000009991 scouring Methods 0.000 claims description 8
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- 108090000790 Enzymes Proteins 0.000 claims description 5
- 102000004190 Enzymes Human genes 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 5
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- 239000000203 mixture Substances 0.000 claims description 4
- 239000000975 dye Substances 0.000 abstract description 51
- 230000002829 reductive effect Effects 0.000 abstract description 24
- 235000000177 Indigofera tinctoria Nutrition 0.000 abstract description 19
- 229940097275 indigo Drugs 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 11
- 239000010865 sewage Substances 0.000 abstract description 8
- 239000004753 textile Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 14
- 229920000742 Cotton Polymers 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
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- 238000005411 Van der Waals force Methods 0.000 description 3
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- 229910001873 dinitrogen Inorganic materials 0.000 description 2
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- 238000009792 diffusion process Methods 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration, distillation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/22—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using vat dyestuffs including indigo
- D06P1/228—Indigo
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/6025—Natural or regenerated cellulose using vat or sulfur dyes
Abstract
The application relates to the field of textiles, and discloses a variable continuous dyeing method of a sizing and dyeing combination machine, which comprises the following steps: adjusting a cloth guide roller in a dyeing tank of the sizing and dyeing combination machine to ensure that the length of the traveling path of the yarn in each dyeing tank is different, thereby ensuring that the infiltration time of the yarn in each dyeing tank is different; and starting a dyeing process, wherein the yarn passes through at least 4 dyeing tanks, and the soaking time of the yarn in each dyeing tank is different. By adopting the variable continuous dyeing method of the sizing and dyeing combination machine, the different soaking time of the yarn in each dyeing tank can be realized when the yarn is subjected to indigo dyeing on the sizing and dyeing combination machine, the soaking time can be adjusted according to the dyeing effect, the use of dyes, chemicals and the like during the dyeing of the yarn is effectively reduced, the treatment of sewage is reduced, the production efficiency is effectively improved, and the production cost is reduced.
Description
Technical Field
The application relates to the technical field of textile printing and dyeing, and mainly relates to a variable continuous dyeing method of a sizing and dyeing combination machine.
Background
The traditional denim fabric is woven by indigo dyed warp yarns and white weft yarns in a twill weave with three over one and one under, and has the characteristics of being rough, thick, old-like and the like. The denim fabric has a fashionable style, namely a variable multi-end after-finishing process, the indigo dye is faded through a washing procedure of the after-finishing process, different style appearances are endowed to the denim fabric, and the after-finishing process is an important link for leading the denim fabric to occupy a certain position in the market. The indigo dye belongs to a reducing dye, is connected with fibers by hydrogen bonds and van der waals force only after being reduced into a golden leuco body, and finishes dyeing of the indigo dye by adsorbing, diffusing and fixing the indigo dye on the fibers and oxidizing the indigo dye in the air.
Warp yarns of the traditional denim fabric are continuously subjected to indigo dyeing by adopting 6-8 dyeing tanks, each dyeing tank is connected with a tank of an indigo mother solution, and the indigo dyeing is realized in the dyeing tanks through padding. The dyeing tank is communicated with the indigo mother liquor tank, the concentration of the indigo dye liquor is controlled to be constant, and if the concentration control is unstable, the dyeing is easy to have quality problems such as color difference and the like. After the yarns are soaked in the indigo dye solution in the dyeing tanks, the yarns can be oxidized on the oxidation rack, each dyeing tank can be matched with the oxidation rack, and the structural design of each dyeing tank is completely the same. The structure of each dyeing tank is the same as that of each oxidation rack, and the running distance of the yarn between each dyeing tank and each oxidation rack is constant, so that the wetting time of the yarn in the dyeing tank and the oxidation time of the yarn in the oxidation rack can be changed by changing the speed of the sizing and dyeing combination machine. In the prior art, the running length of the yarn in the dyeing tank is generally 5-11m, the running length of the yarn on the oxidation rack (namely the length of the yarn exposed to the air between the previous dyeing tank and the next dyeing tank) is generally 25-30m and is fixed, the speed of the sizing and dyeing combination machine is generally 20-40m/min, then the soaking time of the yarn in the dyeing tank is generally 8-20S, the oxidation time of the yarn in the oxidation rack is generally 45-90S, and the soaking time of the yarn in each dyeing tank and the oxidation time in the corresponding oxidation rack are fixed.
Since the affinity of indigo dye to cellulosic fibers (e.g., cotton fibers) is very low, 6-8 dye baths are required for continuous indigo dyeing of yarns. However, after the yarn passes through the indigo dye solution of the first dyeing tank, the yarn is soaked, adsorbed, diffused and attached to reach a dyeing saturation state, the soaking time of the yarn in each dyeing tank is fixed, and the affinity between the indigo dye and cellulose fibers (such as cotton fibers) is very small, so that the indigo dye is difficult to permeate into the yarn when the yarn is subjected to soaking treatment in the subsequent dyeing tanks, the indigo dye can only be attached to the surface of the yarn or can only permeate a little inwards, and a large amount of loose color exists on the surface of the yarn. In addition, after the dyeing process, the yarn surface is generally washed off by 3 washing processes, and the sewage treatment cost is high due to the high content of the floating color in the sewage.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a method for variable continuous dyeing by a sizing and dyeing combination machine, which aims to solve the problem that the time for a yarn to pass through a dyeing tank can only be the same when the existing sizing and dyeing combination machine carries out continuous dyeing.
The technical scheme of the application is as follows:
a method for variable continuous dyeing of a sizing and dyeing combination machine is adopted to dye yarns, the sizing and dyeing combination machine comprises at least 4 dyeing tanks, each dyeing tank is connected with an oxidation rack, a nitrogen box is arranged between the first dyeing tank and the corresponding oxidation rack, and the method for variable continuous dyeing of the sizing and dyeing combination machine comprises dyeing;
the dyeing process comprises the following steps:
adjusting a cloth guide roller in the dyeing tank of the sizing and dyeing combination machine to ensure that the length of the traveling path of the yarn in each dyeing tank is different and the soaking time of the yarn in each dyeing tank is different;
and starting a dyeing process, wherein the yarn sequentially passes through at least 4 dyeing tanks, and the soaking time of the yarn in each dyeing tank is different.
The variable continuous dyeing method of the sizing and dyeing combination machine can realize different soaking time of the yarns in each dyeing tank by adjusting the length of the running path of the yarns in the dyeing tanks under the condition of a certain vehicle speed.
The variable continuous dyeing method of the sizing and dyeing combination machine is characterized in that the soaking time of the yarn in the first dyeing tank is 8-12S, and the soaking time of the yarn in the subsequent dyeing tank is 80-95% of the soaking time of the yarn in the previous dyeing tank.
By decreasing the dyeing time of the yarn in each dyeing tank, the use of dyes, chemicals and the like during dyeing of the yarn can be effectively reduced, the treatment of sewage is reduced, the production efficiency is effectively improved, and the production cost is reduced.
The variable continuous dyeing method of the sizing and dyeing combination machine comprises the following steps:
boiling: adding scouring enzyme 2-4g/L at 85-95 deg.C for 5-20S;
washing: washing with water at normal temperature for 8-12S;
steam steaming: introducing steam into the steam box at the temperature of 110-;
the dyeing is carried out;
drying: the drying temperature is 110-130 ℃, and the treatment time is 45-90S.
The variable continuous dyeing method of the sizing and dyeing combination machine comprises the following steps:
(1) performing dyeing treatment in a first dyeing tank;
(2) entering a nitrogen box for nitrogen treatment;
(3) carrying out first oxidation treatment through a first oxidation rack;
(4) performing dyeing treatment in a second dyeing tank;
(5) carrying out secondary oxidation treatment on the mixture by a second oxidation rack;
(6) performing hydrogen peroxide washing water treatment in a first washing water tank;
(7) carrying out first washing water treatment in a second washing water tank;
(8) performing dyeing treatment in a third dyeing tank;
(9) carrying out third oxidation treatment on the mixture by a third oxidation rack;
(10) performing dyeing treatment in a fourth dyeing tank;
(11) performing fourth oxidation treatment through a fourth oxidation rack;
(12) performing cellulase washing water treatment in a third washing water tank;
(13) and carrying out second washing water treatment in a fourth washing water tank: the treatment time is 8-12S.
The variable continuous dyeing method of the sizing and dyeing combination machine is characterized in that the concentration of the indigo dye in each dyeing tank is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, and the concentration of the sodium hydroxide is 1.6-2.4 g/L.
The method for variable continuous dyeing by the sizing and dyeing combination machine is characterized in that in the first dyeing tank, the infiltration time of the yarn is 8-12S;
in the second dyeing tank, the infiltration time of the yarn is 6.4-11.4S;
in the third dyeing tank, the soaking time of the yarn is 5.1-10.8S;
in the fourth dyeing tank, the infiltration time of the yarn is 4.1-10.2S.
The variable continuous dyeing method of the sizing and dyeing combination machine comprises the steps that in the nitrogen treatment process, the temperature is 100-130 ℃, the pressure is 1.5-3 atmospheric pressures, and the treatment time is 25-60S.
The variable continuous dyeing method of the sizing and dyeing combination machine is characterized in that in the hydrogen peroxide washing water treatment process, the concentration of hydrogen peroxide is 2-4g/L, the treatment time is 10-14S, and the temperature is 40-60 ℃.
The method for variable continuous dyeing by the sizing and dyeing combination machine is characterized in that in the process of washing water treatment by cellulase, the concentration of the cellulase is 1-3g/L, the temperature is 50-60 ℃, and the treatment time is 10-14S.
The variable continuous dyeing method of the sizing and dyeing combination machine is characterized in that in the first washing water treatment process, the washing is carried out at normal temperature for 10-14S;
in the second washing water treatment process, washing with water at normal temperature for 8-12S;
in the first oxidation treatment process, the treatment time is 120-180S;
in the second oxidation treatment process, the treatment time is 60-90S;
in the third oxidation treatment process, the treatment time is 30-60S;
in the fourth oxidation treatment process, the treatment time is 25-55S.
Has the advantages that: the application discloses method for variable continuous dyeing of sizing and dyeing combination machine can make the yarn carry out the indigo dyeing on sizing and dyeing combination machine and when can realize that the infiltration time of yarn at each dyeing bath is different, can adjust the infiltration time according to the dyeing effect, effectively reduces uses such as dyestuff, chemicals when the yarn is dyed to reduce the processing of sewage, effectively improve production efficiency and reduction in production cost.
Drawings
FIG. 1 is a schematic view of the structure of the dyeing tank in the present application (the length of the yarn traveling path is longest).
FIG. 2 is a schematic view of the structure of the dyeing bath according to the present application (the yarn traveling path length is shorter than that in FIG. 1).
FIG. 3 is a schematic view of the structure of the dyeing bath according to the present application (the yarn traveling path length is shorter than that in FIG. 1).
Description of reference numerals: 11. An upper cloth guide roller; 12. a lower cloth guide roller.
Detailed Description
The application provides a variable continuous dyeing method of a sizing and dyeing combination machine, and in order to make the purposes, technical schemes and effects of the application clearer and clearer, the application is further described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The application provides a method of variable continuous dyeing of sizing-dyeing combination machine, adopts sizing-dyeing combination machine to dye the yarn, and sizing-dyeing combination machine includes 4 at least dyeing baths, and every dyeing bath links to each other with an oxidation frame, is provided with a nitrogen gas case between first dyeing bath and its oxidation frame that corresponds, includes following step:
adjusting a cloth guide roller in a dyeing tank of the sizing and dyeing combination machine to ensure that the length of the traveling path of the yarn in each dyeing tank is different, thereby ensuring that the infiltration time of the yarn in each dyeing tank is different;
and starting a dyeing process, wherein the yarn sequentially passes through at least 4 dyeing tanks, the soaking time of the yarn in the first dyeing tank is 8-12S, and the soaking time of the yarn in the subsequent dyeing tank is 80-95% of that of the previous dyeing tank.
The soaking time in this application refers to the time required for the yarn to enter the dye bath liquid from one end to exit the dye bath liquid from the other end, i.e. the soaking time of the yarn in the dye bath.
In the application, no special requirements are required for the pressure of padding and the yarn tension, and the conventional padding pressure and the yarn tension are adopted, which is not described herein any more.
The process of adjusting the cloth guide roller in the dyeing tank of the sizing and dyeing combination machine can be used for selectively bypassing the cloth guide roller in the dyeing tank according to the required time, so that the travelling path length of the yarn in each dyeing tank is changed, and the time of the yarn passing through the dyeing tank is changed. For example, 5 cloth guide rollers are arranged in the dyeing tank, the cloth guide rollers are divided into an upper cloth guide roller 11 and a lower cloth guide roller 12, the upper cloth guide roller 11 is positioned above the lower cloth guide roller 12, the upper cloth guide roller 11 and the lower cloth guide roller 12 are arranged at intervals, the linear distance between the upper cloth guide roller and the lower cloth guide roller can be 1.5m, and the distance between the upper cloth guide roller 11 and the distance between the lower cloth guide roller 12 are both 0.8 m; the yarn can bypass all cloth guide rollers in the dyeing tank through the first dyeing tank, the length of the walking path is 6m at most, and the longest dyeing time is achieved, as shown in figure 1; when passing through the second dyeing tank, the yarn can selectively bypass 4 cloth guide rollers, and the length of the traveling path of the yarn in the second dyeing tank is shortened to 3.8m, so that the dyeing time is shortened, as shown in fig. 2.
The cloth guide rollers and the dyeing tank in the dyeing tank can be movably arranged, the time of the yarns passing through the dyeing tank is changed by adjusting the distance between the cloth guide rollers, and the time of the yarns passing through the dyeing tank can also be changed by changing the length of the travelling path of the yarns in each dyeing tank. For example, 5 cloth guide rollers are arranged in the dyeing tank, the cloth guide rollers are divided into an upper cloth guide roller 11 and a lower cloth guide roller 12, the upper cloth guide roller 11 is positioned above the lower cloth guide roller 12, the upper cloth guide roller 11 and the lower cloth guide roller 12 are arranged at intervals, the position of the lower cloth guide roller 12 is adjustable, the yarn passes through the first dyeing tank, the distance between the lower cloth guide roller 12 and the upper cloth guide roller 11 is the longest, the linear distance between the upper cloth guide roller and the lower cloth guide roller can be 1.5m, and the length of the walking path is the longest 6m, so as to achieve the longest dyeing time, as shown in fig. 1; the distance between the lower cloth guide roll 12 and the upper cloth guide roll 11 of the second dyeing tank through which the yarn passes is smaller than that of the first dyeing tank, the linear distance between the upper cloth guide roll and the lower cloth guide roll can be 1.0m, the maximum length of the traveling path is 4m, and the length of the traveling path of the yarn in the second dyeing tank is shortened to shorten the dyeing time, as shown in fig. 3.
Through the two modes, the time for soaking the yarn in the dyeing tanks is reduced in a gradient manner. Because the indigo dye generally passes through at least 4 padding dyeing processes when dyeing, and because the indigo dye has the characteristics and the principle of being combined with cellulose fibers, the dyeing effect is achieved through infiltration, permeation and adhesion, when the yarn is dyed to be saturated after passing through the two dyeing tanks, the dye is difficult to permeate continuously, after the yarn is dyed by the next dyeing tank, a large amount of dye can be accumulated on the surface of the yarn to form loose colors, and the loose colors can block the permeation of the dye in the subsequent dyeing process, so the time for the yarn to enter each dyeing tank is reasonably controlled, the loose colors accumulated on the surface of the yarn can be reduced, the dye can permeate into the yarn in the subsequent dyeing process, and the dyeing effect can be improved while the dyeing time is reduced. The application provides a method of variable continuous type dyeing of sizing and dyeing combine breaks through the infiltration time between the dyeing tank and is the same tradition, and the time that the yarn was infiltrated can be adjusted to this application, can effectively reduce the production of loose color, effectively reduces the interference effect of loose color to the dyestuff dyeing.
Because the indigo dye belongs to a reducing dye due to the characteristics of the indigo dye, the indigo dye is only reduced into a golden leuco body, and is combined with cellulose fibers by hydrogen bonds or van der Waals force through adsorption, diffusion and fixation, and the combination capability of the indigo dye is weak. In this application scheme, through changing the time of infiltrating, can let the abundant infiltration of indigo dyestuff to oxidation time is sufficient, when reaching dyeing effect saturation, reduces the time of dyeing, effectively reduces the formation of yarn surface flooding.
By adopting the variable continuous dyeing method of the sizing and dyeing combination machine, the different soaking time of the yarn in each dyeing tank can be realized when the yarn is subjected to indigo dyeing on the sizing and dyeing combination machine, the soaking time can be adjusted according to the dyeing effect (the soaking time can be properly controlled according to the dyeing depth of the yarn), the use of dyes, chemicals and the like during the dyeing of the yarn can be effectively reduced, the treatment of sewage is reduced, the production efficiency is effectively improved, and the production cost is reduced. Because the soaking time of the yarn is reduced, the content of liquid taken away by the yarn is reduced, and the number of dyed yarns is increased under the same liquid volume, thereby achieving the purpose of reducing the use of chemicals and dyes.
Further, the concentrations of the raw material components of the indigo dyeing liquid in each dyeing tank are the same, specifically, the concentration of the indigo dye is 1.8-2.6g/L, the concentration of sodium hydrosulfite is 1.1-1.4g/L, and the concentration of sodium hydroxide is 1.6-2.4 g/L.
Further, the yarn is pure cotton yarn or blended yarn containing cotton fiber, and the count of the yarn is 6-32S. Cotton fibers are cellulosic fibers that can be dyed with indigo dye.
The application also provides a preferable variable continuous dyeing method of the sizing and dyeing combination machine, which comprises the following steps:
boiling: adding scouring enzyme 2-4g/L into water tank at 85-95 deg.C for 5-20S.
The yarn is firstly boiled to remove some impurities in the yarn and substances such as wax in the fiber, so that the fixation of the dye is convenient.
Washing: washing with water at normal temperature for 8-12S.
The residual impurities on the yarns can be further removed through washing the yarns, so that the fixation of the dye is facilitated.
Steam steaming: in the steam box, steam is introduced, the temperature is 110-.
It should be noted that the size dyeing combination machine generally comprises 6-8 water tanks, each water tank is used for performing different treatments on the yarns, the water tank for performing the scouring treatment is a scouring tank, the water tank for performing the dyeing treatment is a dyeing tank, and the water tank for performing the washing water treatment is a washing water tank. The speed of each water tank in the sizing and dyeing combination machine is uniform.
The yarn is subjected to a steam process, and under the action of high temperature and certain pressure, the structure of the fiber is changed, so that the crystallization area is reduced, the disordered area of the fiber is increased, and further permeation and fixation of the dye are facilitated.
Dyeing;
drying: the drying temperature is 110-130 ℃, and the treatment time is 45-90S.
Wherein, in the dyeing process, 8 basins need to be used, and 8 basins are first staining bath, nitrogen case, second staining bath, first washing basin (hydrogen peroxide solution washing), second washing basin (clear water washing), third staining bath, fourth staining bath, third washing basin (cellulase washing), fourth washing basin (clear water washing) respectively. Each dyeing tank is connected with one oxidation rack, and a nitrogen box is arranged between the first dyeing tank and the corresponding oxidation rack.
Specifically, the dyeing process comprises the following steps:
(1) dyeing treatment is carried out in a first dyeing tank: the concentration of the indigo dye is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, the concentration of the sodium hydroxide is 1.6-2.4g/L, the time is 8-12S, and the vehicle speed is 20-30 m/min.
(2) Entering a nitrogen box for nitrogen treatment: the temperature is 100-130 ℃, the pressure is 1.5-3 atmospheric pressures, and the processing time is 25-60S. The effect of carrying out nitrogen treatment after dyeing for the first time is that when the yarn carries out indigo dyestuff dyeing, under the effect of nitrogen gas, can effectively delay oxygen and carry out the oxidation to it, the extension dyestuff inward osmosis, make the indigo dyestuff further pile up in fibrous amorphous region, make the yarn dyeing more firm.
(3) Carrying out first oxidation treatment through a first oxidation frame: the processing time is 120-180S. The first oxidation time is increased because the yarn is subjected to scouring and steaming before being treated in the first dyeing bath so as to enhance the impregnation effect of the fiber, so that the binding ability of the dye and the fiber is enhanced in the first dyeing bath, and then the yarn is introduced into a nitrogen box, and the dye is further permeated inwards and is bound with the fiber through hydrogen bonds and the like under the nitrogen atmosphere (the nitrogen content is 90-99 percent) by adjusting the temperature and the atmospheric pressure. Since a large amount of dye is bound to the yarn, it is necessary to extend the oxidation time at the first oxidation treatment in order to reduce the occurrence of flooding. In addition, if the indigo dye is not sufficiently oxidized and then enters the next dyeing tank, the dye on the yarn can hinder the dye in the second dyeing tank from infiltrating, so that the dye is accumulated on the surface of the yarn, a large amount of flooding is caused, and meanwhile, the dye accumulation causes the waste of the dye.
(4) Dyeing treatment is carried out in a second dyeing tank: the concentration of the indigo dye is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, the concentration of the sodium hydroxide is 1.6-2.4g/L, and the time is 6.4-11.4S.
(5) And (3) carrying out secondary oxidation treatment through a second oxidation rack: the treatment time is 60-90S.
(6) Hydrogen peroxide washing water treatment is carried out in a first washing water tank: the concentration of hydrogen peroxide is 2-4g/L, the treatment time is 10-14S, and the temperature is 40-60 ℃.
(7) And carrying out first cleaning water treatment in a second cleaning water tank: washing with water at normal temperature for 10-14S.
(8) Dyeing treatment is carried out in a third dyeing tank: the concentration of the indigo dye is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, the concentration of the sodium hydroxide is 1.6-2.4g/L, and the time is 5.1-10.8S.
(9) Carrying out third oxidation treatment through a third oxidation rack: the treatment time is 30-60S.
(10) Dyeing treatment is carried out in a fourth dyeing tank: the concentration of the indigo dye is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, the concentration of the sodium hydroxide is 1.6-2.4g/L, and the time is 4.1-10.2S.
(11) And (3) performing fourth oxidation treatment through a fourth oxidation rack: the treatment time is 25-55S.
(12) And (3) performing cellulase washing water treatment in a third washing water tank: the concentration of the cellulase is 1-3g/L, the temperature is 50-60 ℃, and the treatment time is 10-14S.
(13) And carrying out second washing water treatment in a fourth washing water tank: treating at normal temperature for 8-12S. After the yarn passes through the first dyeing tank, certain temperature and pressure are also adjusted by the nitrogen box through the nitrogen box, so that the time of the dye entering the fiber can be prolonged to a certain degree, the dye can further act on the fiber under the action of the temperature and the pressure, the further inward permeation of the dye is realized, the softness of the fiber can be effectively improved, and the fabric made of the yarn can also achieve comfortable hand feeling without the need of soft oil treatment. Because of the reason of the indigo dye, the indigo dye can be adsorbed, diffused and attached to achieve the coloring purpose only after being reduced into a leuco body, but the combination of the dye and the fiber is connected with a small amount of hydrogen bonds and a large amount of van der Waals force, so that a large amount of dye can be accumulated on the surface of the yarn after passing through the first dyeing tank and the second dyeing tank, and the dye can be prevented from further penetrating inwards when the dye which is not combined and accumulated blocks the dye during the next dyeing padding. The yarn needs to be oxidized after being dyed in each dyeing tank, so that the soaking time of the yarn in each dyeing tank needs to be adjusted, the oxidation time of the yarn on each oxidation rack needs to be adjusted, and the dye can be fully oxidized. After the yarns are dyed by the first dyeing tank and the second dyeing tank, according to the dyeing infiltration effect, the infiltration time of the yarns in the third dyeing tank and the fourth dyeing tank and the oxidation time of the yarns in each oxidation rack are adjusted, the infiltration time is gradually reduced, and the oxidation time is also gradually reduced. The time of oxidation on the oxidation frame is also adjusted by controlling the stroke length of the yarn on the oxidation frame, and the longer the stroke, the longer the oxidation time. Because after the dyeing of first two dye vats, the yarn surface is in the saturated state, when third dye vat and fourth dye vat dyeing, hinders indigo dyestuff to permeate to the inside, consequently reduces the time of dyeing and infiltrating gradually, can effectively reduce indigo dyestuff and pile up on the yarn surface, reduces the formation of loose color, reduces the oxidation time simultaneously, also can improve production efficiency. Moreover, after the treatment of hydrogen peroxide washing water, the residual hydrogen peroxide in the yarn oxidizes the dye to a certain extent, especially the dye in the inner layer of the yarn, so that the soaking time of the yarn in the two dyeing tanks at the back and the oxidation time of the oxidation rack can be reduced. After the dyeing in the third dyeing tank and the fourth dyeing tank, the dyeing is carried out in the cellulase washing water, the concentration, the temperature and the treatment time are reasonably controlled, the cellulase mainly acts on the hairiness on the surface of the yarn, the indigo dye on the hairiness falls off, and therefore the floating color is effectively reduced, and the dyeing can be carried out only in one washing water treatment. In this application, through the time that changes dyeing and oxidation, realize a continuous variable indigo blue dyeing technique, can reach traditional dyeing effect, reduce the floating color, improve production efficiency, can also reduce the use of dyestuff and its chemicals.
The present invention is further illustrated by the following specific examples.
Example 1
Indigo dyeing is carried out on 10S pure cotton warp yarns, the number of warp yarn ends is 5000, and the dyeing process comprises the following steps:
1. boiling: adding scouring enzyme 3g/L into water tank at 90 deg.C for 15S.
2. Washing: washing with water at normal temperature for 10S.
3. Steam steaming: and introducing steam into the steam box at 110 deg.C under 2 atm for 40S.
4. Dyeing:
(1) dyeing treatment is carried out in a first dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 12S. Wherein, the steps (1) to (13) are all finished on a sizing and dyeing combination machine, and the vehicle speed is 25 m/min.
(2) Entering a nitrogen box for nitrogen treatment: the temperature was 110 ℃, the pressure was 2 atmospheres, and the treatment time was 40S.
(3) Carrying out first oxidation treatment through a first oxidation frame: the processing time was 180S.
(4) Dyeing treatment is carried out in a second dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 10S.
(5) And (3) carrying out secondary oxidation treatment through a second oxidation rack: the processing time was 90S.
(6) Hydrogen peroxide washing water treatment is carried out in a first washing water tank: the concentration of hydrogen peroxide is 3g/L, the treatment time is 12S, and the temperature is 50 ℃.
(7) And carrying out first cleaning water treatment in a second cleaning water tank: washing with water at normal temperature for 10S.
(8) Dyeing treatment is carried out in a third dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 8S.
(9) Carrying out third oxidation treatment through a third oxidation rack: the treatment time was 60S.
(10) Dyeing treatment is carried out in a fourth dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 6.5S.
(11) And (3) performing fourth oxidation treatment through a fourth oxidation rack: the processing time was 55S.
(12) And (3) performing cellulase washing water treatment in a third washing water tank: the concentration of cellulase is 2g/L, the temperature is 55 ℃, and the treatment time is 12S.
(13) And (3) performing clear water washing water treatment in a fourth washing water tank: the treatment was carried out at room temperature for 12 seconds.
5. Drying: the drying temperature is 120 ℃, and the processing time is 70S.
Comparative example
Indigo dyeing is carried out on 10S pure cotton warp yarns, the number of warp yarn ends is 5000, and the dyeing process comprises the following steps:
1. boiling: adding scouring enzyme 3g/L into water tank at 90 deg.C for 15S.
2. Washing: washing with water at normal temperature for 10S.
3. Steam steaming: and introducing steam into the steam box at 110 deg.C under 2 atm for 40S.
4. Dyeing:
(1) dyeing treatment is carried out in a first dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 12S. Wherein, the steps (1) to (13) are all finished on a sizing and dyeing combination machine, and the vehicle speed is 25 m/min.
(2) Entering a nitrogen box for nitrogen treatment: the temperature was 110 ℃, the pressure was 2 atmospheres, and the treatment time was 40S.
(3) Carrying out first oxidation treatment through a first oxidation frame: the processing time was 120S.
(4) Dyeing treatment is carried out in a second dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 12S.
(5) And (3) carrying out secondary oxidation treatment through a second oxidation rack: the treatment time was 60S.
(6) Hydrogen peroxide washing water treatment is carried out in a first washing water tank: the concentration of hydrogen peroxide is 3g/L, the treatment time is 12S, and the temperature is 50 ℃.
(7) And carrying out first cleaning water treatment in a second cleaning water tank: washing with water at normal temperature for 10S.
(8) Dyeing treatment is carried out in a third dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 12S.
(9) Carrying out third oxidation treatment through a third oxidation rack: the treatment time was 60S.
(10) Dyeing treatment is carried out in a fourth dyeing tank: the concentration of the indigo dye is 2.2g/L, the concentration of the sodium hydrosulfite is 1.2g/L, the concentration of the sodium hydroxide is 2.0g/L, and the time is 12S.
(11) And (3) performing fourth oxidation treatment through a fourth oxidation rack: the treatment time was 60S.
(12) And (3) performing cellulase washing water treatment in a third washing water tank: the concentration of cellulase is 2g/L, the temperature is 55 ℃, and the treatment time is 12S.
(13) And (3) performing clear water washing water treatment in a fourth washing water tank: the treatment was carried out at room temperature for 12 seconds.
5. Drying: the drying temperature is 120 ℃, and the processing time is 70S.
The indigo yarns prepared in example 1 and the comparative example were compared and the data are shown in table 1. Wherein k/s is the dyeing depth, COD is the chemical oxygen demand, the quantity of the oxidant consumed by the reductive substance during the oxidative decomposition under the action of the additional strong oxidant is expressed by mg/L of oxygen, and the chemical oxygen demand reflects the degree of pollution of the reductive substance in the water. As can be seen from the table 1, the indigo yarn obtained by the dyeing method has good dyeing effect, and the COD content in the produced sewage is low, namely the sewage treatment cost is low.
TABLE 1
| Item | k/s | Dye uptake | Color fastness to wet rubbing | COD（mg/L） |
| Example 1 | 13.8 | 9.2% | 2-3 stages | 1568 |
| Comparative example | 11.1 | 6.6% | Level 1 | 2419 |
It should be understood that the application of the present application is not limited to the above examples, and that modifications or changes may be made by those skilled in the art based on the above description, and all such modifications and changes are intended to fall within the scope of the appended claims.
Claims (10)
1. A method for dyeing yarn in a variable continuous mode by a sizing and dyeing combination machine is characterized in that the sizing and dyeing combination machine is used for dyeing yarn and comprises at least 4 dyeing tanks, each dyeing tank is connected with an oxidation rack, a nitrogen box is arranged between the first dyeing tank and the corresponding oxidation rack, and the method for dyeing yarn in the variable continuous mode by the sizing and dyeing combination machine comprises dyeing;
the dyeing process comprises the following steps:
adjusting a cloth guide roller in the dyeing tank of the sizing and dyeing combination machine to ensure that the length of the traveling path of the yarn in each dyeing tank is different and the soaking time of the yarn in each dyeing tank is different;
and starting a dyeing process, wherein the yarn sequentially passes through at least 4 dyeing tanks, and the soaking time of the yarn in each dyeing tank is different.
2. The method for the variable continuous dyeing of the sizing and dyeing combination machine as claimed in claim 1, characterized in that the time for the yarn to be soaked in the first dyeing tank is 8-12S, and the time for the yarn to be soaked in the subsequent dyeing tank is 80-95% of the time for the yarn to be soaked in the previous dyeing tank.
3. The method for the variable continuous dyeing of the sizing and dyeing combination machine according to claim 1, characterized in that the method for the variable continuous dyeing of the sizing and dyeing combination machine comprises the following steps:
boiling: adding scouring enzyme 2-4g/L at 85-95 deg.C for 5-20S;
washing: washing with water at normal temperature for 8-12S;
steam steaming: introducing steam into the steam box at the temperature of 110-;
the dyeing is carried out;
drying: the drying temperature is 110-130 ℃, and the treatment time is 45-90S.
4. The method for variable continuous dyeing by a sizing and dyeing combination machine as claimed in claim 3, characterized in that the dyeing procedure comprises the following steps:
(1) performing dyeing treatment in a first dyeing tank;
(2) entering a nitrogen box for nitrogen treatment;
(3) carrying out first oxidation treatment through a first oxidation rack;
(4) performing dyeing treatment in a second dyeing tank;
(5) carrying out secondary oxidation treatment on the mixture by a second oxidation rack;
(6) performing hydrogen peroxide washing water treatment in a first washing water tank;
(7) carrying out first washing water treatment in a second washing water tank;
(8) performing dyeing treatment in a third dyeing tank;
(9) carrying out third oxidation treatment on the mixture by a third oxidation rack;
(10) performing dyeing treatment in a fourth dyeing tank;
(11) performing fourth oxidation treatment through a fourth oxidation rack;
(12) performing cellulase washing water treatment in a third washing water tank;
(13) the second washing water treatment is performed in the fourth washing water tank.
5. The variable continuous dyeing method of the size dyeing combination machine according to claim 4, characterized in that the concentration of the indigo dye in each dyeing tank is 1.8-2.6g/L, the concentration of the sodium hydrosulfite is 1.1-1.4g/L, and the concentration of the sodium hydroxide is 1.6-2.4 g/L.
6. The method for the variable continuous dyeing of the sizing and dyeing combination machine according to claim 4, characterized in that in the first dyeing tank, the infiltration time of the yarn is 8-12S;
in the second dyeing tank, the infiltration time of the yarn is 6.4-11.4S;
in the third dyeing tank, the soaking time of the yarn is 5.1-10.8S;
in the fourth dyeing tank, the infiltration time of the yarn is 4.1-10.2S.
7. The variable continuous dyeing method of the sizing and dyeing combination machine as claimed in claim 4, characterized in that, in the nitrogen treatment process, the temperature is 100-130 ℃, the pressure is 1.5-3 atmospheric pressures, and the treatment time is 25-60S.
8. The variable continuous dyeing method of the sizing and dyeing combination machine according to claim 4, characterized in that in the hydrogen peroxide treatment process, the concentration of hydrogen peroxide is 2-4g/L, the treatment time is 10-14S, and the temperature is 40-60 ℃.
9. The variable continuous dyeing method of the size dyeing combination machine according to claim 4, characterized in that in the process of the cellulase washing water treatment, the concentration of cellulase is 1-3g/L, the temperature is 50-60 ℃, and the treatment time is 10-14S.
10. The variable continuous dyeing method of the size dyeing combination machine according to claim 4, characterized in that in the first washing water treatment process, the washing is carried out at normal temperature for 10-14S;
in the second washing water treatment process, washing with water at normal temperature for 8-12S;
in the first oxidation treatment process, the treatment time is 120-180S;
in the second oxidation treatment process, the treatment time is 60-90S;
in the third oxidation treatment process, the treatment time is 30-60S;
in the fourth oxidation treatment process, the treatment time is 25-55S.
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