CN113215838A - Rayon dyeing process in low-temperature environment - Google Patents
Rayon dyeing process in low-temperature environment Download PDFInfo
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- CN113215838A CN113215838A CN202110508952.4A CN202110508952A CN113215838A CN 113215838 A CN113215838 A CN 113215838A CN 202110508952 A CN202110508952 A CN 202110508952A CN 113215838 A CN113215838 A CN 113215838A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 45
- 229920000297 Rayon Polymers 0.000 title claims abstract description 40
- 239000002964 rayon Substances 0.000 title claims abstract description 34
- 230000008569 process Effects 0.000 title claims abstract description 33
- 239000004744 fabric Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000975 dye Substances 0.000 claims abstract description 27
- 238000005406 washing Methods 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000000985 reactive dye Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 125000005647 linker group Chemical group 0.000 claims abstract description 5
- 229920000728 polyester Polymers 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000004902 Softening Agent Substances 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 6
- 229920003043 Cellulose fiber Polymers 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 229960000583 acetic acid Drugs 0.000 claims description 3
- 239000002216 antistatic agent Substances 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000012362 glacial acetic acid Substances 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 1
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 229920002223 polystyrene Polymers 0.000 description 2
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- 238000009987 spinning Methods 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000004672 reactive softener Substances 0.000 description 1
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Images
Classifications
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- 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
- D06P1/38—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 reactive dyes
-
- 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
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- 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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
-
- 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
- D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
- D06P1/67358—Halides or oxyhalides
-
- 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
- D06P3/66—Natural or regenerated cellulose using reactive dyes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coloring (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a rayon dyeing process in a low-temperature environment, which relates to the technical field of rayon and comprises the following steps: the method comprises the following steps of treating rayon, selecting a dip dyeing method, cleaning, softening rayon cloth, drying fabric, shaping the fabric, controlling the temperature to be 60 ℃ during dyeing, adding a polyester leveling agent, adding a dye when the temperature rises to 80 ℃, stirring the dye, waiting for the temperature to rise to 130 ℃, stopping heating, waiting for the temperature to fall to 80 ℃, draining water, keeping the temperature at 80 ℃, draining water after hot washing for 6 minutes, wherein the dye is a reactive dye which can form a firm covalent bond with fiber when in use because the reactive dye consists of a parent dye, a linking group and a reactive group. The dyeing method can obtain higher dye-uptake and fixation rate. And the method has good level dyeing effect, and reduces the problem of low dyeing utilization rate of the conventional reactive dye.
Description
Technical Field
The invention relates to the technical field of rayon, in particular to a rayon dyeing process in a low-temperature environment.
Background
The viscose staple fibers are called artificial cotton, called rayon for short, and have good hygroscopicity and soft hand feeling. The cotton linters, wood pulp and bagasse are the main raw materials for producing viscose fiber, and have rich resources and low manufacturing cost. The dry strength of the viscose fiber is lower than that of cotton, the wet strength of the viscose fiber is only about 66 percent of that of the cotton, and the viscose fiber has poor elastic resilience, is not wear-resistant, sun-resistant, alkali-resistant and acid-resistant; but the viscose has good hygroscopicity, is easy to dye and is comfortable to wear.
When the reactive dye is used for dyeing the rayon in the existing low-temperature environment, the utilization rate is not high enough, generally 60% -70%, a large amount of colored sewage is generated, the chroma is more than several thousand times, the COD value is generally 0.8-3 ten thousand ppm, the COD value of concentrated wastewater is more than 5 ten thousand ppm, and the production cost is greatly increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a rayon dyeing process in a low-temperature environment, and solves the problems in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a rayon dyeing process in a low-temperature environment comprises the following steps:
s1, processing the rayon, namely processing the gray cloth by using a processing agent, and then washing and drying the gray cloth by water, wherein the rotation speed of drying is 1200 r/min.
S2, selecting a dip-dyeing method, firstly placing the cloth in a neutral bath for dyeing, and adding an alkaline agent into the dyeing bath when the dyeing of the dye is close to balance, wherein the alkaline agent comprises the following components in parts by mass: 50-60 parts of sodium carbonate, 20-30 parts of water, 2-5 parts of sodium hypochlorite and 5-8 parts of ethylene glycol, wherein the water is gradually absorbed in the exposed air, carbon dioxide is lost at 400 ℃, the sodium carbonate, the sodium hypochlorite and the ethylene glycol are sequentially added into the water to prepare a mixed solution, the mixed solution is stirred, the mixed solution is heated in the stirring process, and the heating temperature is changed along with the change of time.
And S3, washing, namely washing the dyed fabric with clear water for one time, adding 0.5g/L glacial acetic acid and 1.0g/L cotton, and soaping with a Mizhongbao, wherein after the soaping is finished, the fabric is washed with the clear water for one time, and the fabric is placed in the clear water and continuously stirred with the water in the process of washing with the clear water.
And S4, softening the rayon fabric, namely softening the fabric cleaned in the S3, adding a softening agent into the fabric, and then pressurizing the fabric to enable the pressure inside the fabric to be 20-30 MPa.
And S5, drying the fabric, and drying the softened fabric in a dryer with the temperature of 120 ℃.
S6, setting the fabric, placing the dried fabric in a setting machine for setting treatment, placing 4.0g/L of hydrophilic antistatic agent and 15g/L of softening agent in a groove of the setting machine, controlling the temperature at 120 ℃ and obtaining a fabric light blank.
Preferably, in the dyeing process of S2, the temperature is controlled at 60 ℃, a polyester leveling agent is added, then when the temperature rises to 80 ℃, the dye is added, the dye is stirred, the temperature rises to 130 ℃, the heating is stopped, the temperature is reduced to 80 ℃, water is drained after the temperature is reduced to 80 ℃, finally the temperature is kept at 80 ℃, the water is drained after the temperature is washed for 6 minutes, the dye is a reactive dye, and the reactive dye is composed of a parent dye, a linking group and a reactive group.
Preferably, the temperature is controlled at 60 ℃ in the dyeing process of S2, the penetrant and the alkaline agent are sequentially added, the temperature of water is controlled, hydrogen peroxide is added when the water temperature reaches 70 ℃, water is drained when the water temperature rises to 80 ℃, and then the neutralizing acid is added.
Preferably, the bath ratio of the dye dyeing step in S2 is 1: 15.
preferably, the bath ratio of the soaping step in the S3 washing is 1: 20 and the temperature needs to be controlled within 92-98 ℃.
Preferably, 1.8g/L of degreaser is added during water washing in the S3 washing, and the oil bath ratio is 1: 10, the washing temperature is controlled at 120 ℃, the washing time is controlled at 20 minutes, the degreasing agent is prepared by compounding a surfactant, an organic solvent and an auxiliary agent, is colorless and transparent liquid, has strong degreasing force, does not corrode workpieces, has excellent effect, is used for the surface cleaning procedure of plastic housings, and can remove oil stains and release agent residues of ABS or modified polystyrene plastic housings.
Preferably, the softener in S4 is an active softener containing in its molecule a softener capable of directly reacting with the hydroxyl groups of the cellulose fibers to form ester bonds or ether bonds.
Preferably, the speed of the setting machine is 20m/min in S6, the overfeeding is 30%, the tension is 2N, and the upper and lower air volume is 40%.
Preferably, the softened fabric is placed flat during the drying process in S5, and the dryer is aligned to ensure complete drying of the fabric.
The invention provides a rayon dyeing process in a low-temperature environment. The method has the following beneficial effects:
(1) according to the dyeing process of the rayon under the low-temperature environment, the dyeing method can obtain higher dye-uptake and color fixation rate, has a good level dyeing effect, reduces the problem of low dyeing utilization rate of conventional reactive dyes, and can effectively improve the efficiency of blended dyeing through the reactive softener.
(2) According to the rayon dyeing process under the low-temperature environment, the color fixing effect is improved, the operation is convenient, the dyeing time is short, the color fastness is improved, the pressure treatment is carried out on the blending dyeing, the color fastness of the rayon is effectively improved, and the phenomenon that the color of the cloth is faded is avoided.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a rayon dyeing process in a low-temperature environment comprises the following steps:
s1, processing the rayon, namely processing the gray cloth by using a processing agent, and then washing and drying the gray cloth by water, wherein the rotation speed of drying is 1200 r/min.
S2, selecting a dip-dyeing method, firstly placing the cloth in a neutral bath for dyeing, and adding an alkaline agent into the dyeing bath when the dyeing of the dye is close to balance, wherein the alkaline agent comprises the following components in parts by mass: 50-60 parts of sodium carbonate, 20-30 parts of water, 2-5 parts of sodium hypochlorite and 5-8 parts of ethylene glycol, wherein the sodium carbonate, the sodium hypochlorite and the ethylene glycol are sequentially added into water to prepare a mixed solution, the mixed solution is stirred and is heated in the stirring process, the heating temperature is changed along with the change of time, and the method can obtain higher dye uptake and color fixing rate. And has good level dyeing effect, so the method is commonly used for dyeing cotton knitted fabrics.
And S3, washing, namely washing the dyed fabric with clear water for one time, adding 0.5g/L glacial acetic acid and 1.0g/L cotton, and soaping with a Mizhongbao, wherein after the soaping is finished, the fabric is washed with the clear water for one time, and the fabric is placed in the clear water and continuously stirred with the water in the process of washing with the clear water.
And S4, softening the rayon fabric, namely softening the fabric cleaned in the S3, adding a softening agent into the fabric, and then pressurizing the fabric to enable the pressure inside the fabric to be 20-30 MPa.
And S5, drying the fabric, and drying the softened fabric in a dryer with the temperature of 120 ℃.
S6, setting the fabric, placing the dried fabric in a setting machine for setting treatment, placing 4.0g/L of hydrophilic antistatic agent and 15g/L of softening agent in a groove of the setting machine, controlling the temperature at 120 ℃ and obtaining a fabric light blank.
Further, in this embodiment, during dyeing, the temperature is controlled at 60 ℃, the polyester leveling agent is added, then the dye is added when the temperature rises to 80 ℃, the dye is stirred, the temperature rises to 130 ℃, heating is stopped, the water is added after the temperature drops to 80 ℃, the water is drained, finally the temperature is kept at 80 ℃, the water is added after the water is drained after hot washing for 6 minutes, the dye is a reactive dye, and the reactive dye can form a firm covalent bond with the fiber when in use because the reactive dye is composed of a parent dye, a linking group and a reactive group.
Further, in this embodiment, the temperature is controlled at 60 ℃ in the dyeing process of S2, the penetrant and the alkaline agent are sequentially added, the temperature of water is controlled, hydrogen peroxide is added when the water temperature reaches 70 ℃, and the neutralizing acid is added after the water is drained when the water temperature rises to 80 ℃.
Further, in the present embodiment, the bath ratio of the dye dyeing step in S2 is 1: the dye is a reactive dye, and the reactive dye is composed of a parent dye, a linking group and a reactive group, so that the reactive dye can form firm covalent bond combination with fibers when in use, has the incomparable characteristics of a series of other cellulose fiber dyes, and has the advantages of wide color spectrum, bright color, excellent performance and strong applicability, and the color phase and the performance of the reactive dye basically adapt to the requirements of the market on the fibers and clothing materials.
Further, in the present embodiment, the bath ratio of the soaping step in the washing at S3 is 1: 20 and the temperature needs to be controlled within 92-98 ℃.
Further, in this example, 1.8g/L of degreaser was added at the time of water washing in the S3 washing, and the oil bath ratio was 1: 10, the water washing temperature is controlled at 120 ℃, the water washing time is controlled at 20 minutes, and the deoiling agent is prepared by compounding a surfactant, an organic solvent and an auxiliary agent. A colorless transparent liquid. The degreasing capability is strong. Has no corrosion effect on workpieces and has good effect. The cleaning agent is used for the surface cleaning process of the plastic shell, and can remove oil stains and release agent residues of the ABS or modified polystyrene plastic shell.
Further, in this example, the softening agent is an active softening agent in S4, and contains a softening agent capable of directly reacting with a hydroxyl group of a cellulose fiber to form an ester bond or an ether bond in the molecule, and the softening finishing is an important post-finishing step in the textile printing process. During the processing of the textile, the hand feeling of the textile becomes rough after being treated for many times, and the common synthetic fiber fabrics are worse, especially the superfine fiber fabrics. In order to make the fabric have soft, smooth and comfortable hand feeling, the fabric needs to be finished, and the finishing is widely performed by using a softening agent. In addition, a large amount of softening agents are used in the processes of spinning chemical fibers, spinning various fibers, weaving various fibers and the like, and the phenomena of scratch, strip defect and the like are easily caused because the mutual friction between fabrics and between the fabrics and equipment is increased along with the large amount of use of high-speed and small bath ratio modes in textile processing. The use of a softening agent allows the fibers themselves to have a soft smoothness compatible with the processing conditions to avoid damage.
Further, in this embodiment, the vehicle speed of the setting machine is 20m/min at S6, the overfeed is 30%, the tension is 2N, and the up and down wind amount is 40%.
Further, in this embodiment, in the drying process in S5, the softened fabric needs to be placed flat, and the fabric needs to be completely dried by the dryer, so that the dried fabric is not wrinkled, and the appearance is ensured.
The dyeing method can obtain higher dye-uptake and color fixation rate, has good level dyeing effect, reduces the problem of low dyeing utilization rate of the conventional reactive dye, improves the color fixation effect, is convenient to operate, has short dyeing time, improves the color fastness, effectively improves the color fastness of the rayon by performing pressure treatment on blended dyeing, and avoids the phenomenon of color fading of cloth.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A rayon dyeing process in a low-temperature environment is characterized by comprising the following steps: the rayon dyeing process under the low-temperature environment comprises the following steps:
s1, processing the rayon, namely processing the gray cloth by using a processing agent, and then washing and drying the gray cloth by water, wherein the rotation speed of drying is 1200 r/min;
s2, selecting a dip-dyeing method, firstly placing the cloth in a neutral bath for dyeing, and adding an alkaline agent into the dyeing bath when the dyeing of the dye is close to balance, wherein the alkaline agent comprises the following components in parts by mass: 50-60 parts of sodium carbonate, 20-30 parts of water, 2-5 parts of sodium hypochlorite and 5-8 parts of ethylene glycol, wherein the sodium carbonate, the sodium hypochlorite and the ethylene glycol are sequentially added into water to prepare a mixed solution, the mixed solution is stirred and is heated in the stirring process, and the heating temperature changes along with the change of time;
s3, washing, namely washing the dyed fabric with clear water for the first time, adding 0.5g/L glacial acetic acid and 1.0g/L cotton, and soaping with a Mizhongbao, wherein after the soaping is finished, the fabric is washed with the clear water for the first time, and the fabric is placed in the clear water and continuously stirred with the water in the process of washing with the clear water;
s4, softening the rayon fabric, namely softening the fabric cleaned in the step S3, adding a softening agent into the fabric, and then pressurizing the fabric to enable the pressure inside the fabric to be 20-30 MPa;
s5, drying the fabric, and drying the softened fabric in a dryer at the temperature of 120 ℃;
s6, setting the fabric, placing the dried fabric in a setting machine for setting treatment, placing 4.0g/L of hydrophilic antistatic agent and 15g/L of softening agent in a groove of the setting machine, controlling the temperature at 120 ℃ and obtaining a fabric light blank.
2. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in the dyeing process of S2, the temperature is controlled at 60 ℃, a polyester leveling agent is added, then when the temperature rises to 80 ℃, the dye is added, the dye is stirred, the temperature rises to 130 ℃, the heating is stopped, the water is added after the temperature drops to 80 ℃, the water is discharged, the temperature is finally kept at 80 ℃, the water is added after the water is discharged after the water is washed for 6 minutes, the dye is a reactive dye, and the reactive dye consists of a parent dye, a linking group and a reactive group.
3. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in S2 dyeing, the temperature is controlled at 60 ℃, penetrant and alkaline agent are added in sequence, the temperature of water is controlled, hydrogen peroxide is added when the water temperature reaches 70 ℃, water is drained when the water temperature rises to 80 ℃, and then neutralizing acid is added.
4. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: the bath ratio of the dye dyeing step in S2 is 1: 15.
5. the rayon dyeing process under low temperature environment according to claim 1, characterized in that: the bath ratio of the soaping step in S3 is 1: 20 and the temperature needs to be controlled within 92-98 ℃.
6. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in S3, 1.8g/L of degreaser is added during water washing, and the ratio of oil bath to oil bath is 1: 10, the water washing temperature is controlled at 120 ℃, the water washing time is controlled at 20 minutes, and the deoiling agent is prepared by compounding a surfactant, an organic solvent and an auxiliary agent.
7. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in S4, the softener is an active softener containing in its molecule a softener capable of reacting directly with the hydroxyl groups of the cellulose fibers to form ester bonds or ether bonds.
8. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in S6, the speed of the setting machine is 20m/min, the overfeeding is 30%, and the tension is 2N.
9. The rayon dyeing process under low temperature environment according to claim 1, characterized in that: in the step S3, the softened fabric needs to be placed flat during the drying process, and the dryer needs to be aligned to ensure complete drying of the fabric.
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| CN202110508952.4A CN113215838A (en) | 2021-05-11 | 2021-05-11 | Rayon dyeing process in low-temperature environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673017A (en) * | 2022-05-10 | 2022-06-28 | 江苏润禾纺织实业有限公司 | Dyeing and low-temperature post-treatment process for cotton knitted fabric |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457511A (en) * | 2018-10-23 | 2019-03-12 | 绍兴富强宏泰印染有限公司 | A kind of woven people's cotton dyeing |
| CN111648143A (en) * | 2020-06-28 | 2020-09-11 | 绍兴泽平印染有限公司 | Dyeing process of rayon cloth |
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2021
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| CN109457511A (en) * | 2018-10-23 | 2019-03-12 | 绍兴富强宏泰印染有限公司 | A kind of woven people's cotton dyeing |
| CN111648143A (en) * | 2020-06-28 | 2020-09-11 | 绍兴泽平印染有限公司 | Dyeing process of rayon cloth |
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| CN114673017A (en) * | 2022-05-10 | 2022-06-28 | 江苏润禾纺织实业有限公司 | Dyeing and low-temperature post-treatment process for cotton knitted fabric |
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