CN111663346B - One-bath one-step energy-saving dyeing method for all-cotton knitted fabric in dark and deep color without pretreatment - Google Patents
One-bath one-step energy-saving dyeing method for all-cotton knitted fabric in dark and deep color without pretreatment Download PDFInfo
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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
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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
- D06P1/44—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
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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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
- D06P1/44—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
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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
- 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
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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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
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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
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
- D06P5/04—After-treatment with organic compounds
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Abstract
The invention relates to an energy-saving dyeing method, and provides a dark deep color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabrics aiming at the problems of long process flow and high energy consumption of all-cotton cloth dyeing process, which comprises the following steps: after the whole cotton cloth enters a cylinder, adjusting the bath ratio to be 1; draining after sampling confirmation, and continuously cleaning; changing water, adding glacial acetic acid and preserving heat; changing water, adding active soaping agent, keeping the temperature at 90 ℃, cleaning with clear water, and taking out of the tank; softening and dehydrating; and (5) drying and shaping. The invention omits the time of bottom floating refining, reduces the energy consumption and obtains better cloth cover effect.
Description
Technical Field
The invention relates to an energy-saving dyeing method, in particular to a dark color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabrics.
Background
The dyeing process of all-cotton knitted grey cloth sample is carried out by bleaching cotton fiber and dyeing the cotton fiber with reactive dye for a long time. The dark and dark color and the bright color do not have the requirement of improving the whiteness of grey cloth, and can obtain better dyeing effect, but have the reasons of complicated working procedures, long processing time (about 8 h), low production efficiency, high water, electricity and steam consumption, high sewage discharge and the like, and do not meet the requirements of environmental protection and energy saving and consumption reduction, so more and more alternative processes are researched, and the aim of realizing the dark and dark color dyeing of the whole cotton by a simpler and more economic method is expected.
At present, the domestic pretreatment of all cotton dark and deep colors is mostly a cold pad-batch pretreatment process: after the cold batch auxiliary agent is rolled on the padder, the cotton fabric is dyed after the cold batch is carried out for more than 12 hours. For example, chinese patent CN102061611B discloses a cold pad-batch dyeing method for all-cotton knitted fabric, and provides a pretreatment liquid for all-cotton knitted fabric, which is used for the cold pad-batch dyeing of all-cotton knitted fabric and is composed of sodium peroxide, sodium hydroxide and sodium silicate; and a dyeing material consisting of a reactive dye, an alkaline agent and a penetrating agent, and provides a cold pad-batch dyeing method applying the pretreatment and the dyeing material. The method overcomes the problems of color difference, black cloth surface, color spots, dyeing spots and the like which may occur in cold pad-batch dyeing of the all-cotton knitted fabric to a certain extent, and has high color fixing rate which can reach more than 85 percent. Although the cold pad-batch pretreatment process saves the use of dye vat steam, the time reduction of the whole production flow is limited, and the cold pad-batch pretreatment process is not suitable for the requirement of high speed and high quality of orders. In the dyeing of the dark and deep cotton colors, the colors are lighter and bright, and the requirement for improving the whiteness of grey cloth does not exist, so that the development of a simpler and more economic pretreatment-free dyeing and finishing process of the dark and deep cotton colors is necessary. There are two main pretreatment schemes:
the first proposal is that a two-step two-bath method of bottom-bleaching and cotton-dyeing is used, namely, bottom-bleaching and cotton-dyeing are carried out firstly:
1. the bleaching bottom material is prepared from the following components in percentage by mass: 6% of hydrogen peroxide, 4% of caustic soda, 0.4% of TF122 oxygen bleaching stabilizer, 0.5% of chelating agent 540A, 0.8% of glacial acetic acid and 0.1% of Ononian deoxygeninase XL;
2. the time consumption of floating bottom is summed up: adding the materials for 20 minutes, heating for 20 minutes, keeping the temperature for 60 minutes, cleaning for 15 minutes, washing for 15 minutes by glacial acetic acid, and deoxidizing for 10 minutes, wherein the total time is 140 minutes.
And the second scheme is that a two-step and two-bath method for refining and dyeing cotton is used, namely, the refining is performed first and then the cotton is dyed.
1. The refining material is prepared from the following components in percentage by mass: 4% of caustic soda, 1% of refining agent and 0.8% of glacial acetic acid; 2. the time consumption of refining totals: the addition was 20 minutes, the temperature was raised for 10 minutes, the incubation was 30 minutes, the washing was 15 minutes, the glacial acetic acid was washed for 15 minutes, and 90 minutes in total.
The two schemes have the process time of more than 1.5 hours, and simultaneously consume steam, electricity and water seriously, which is not suitable for energy conservation and emission reduction, so an ideal solution is needed.
Disclosure of Invention
The invention aims to overcome the problems of long process flow and high energy consumption of the all-cotton cloth dyeing process, provides the one-bath one-step energy-saving dyeing method of dark and deep colors of all-cotton knitted fabrics, omits the bottom-floating refining time, reduces the energy consumption, obtains better cloth cover effect because of the shortened time, has the color fastness consistent with the conventional process, has the characteristics of simple process, short processing flow and good color reproducibility compared with the conventional process, and meets the requirements of energy conservation and emission reduction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dark deep color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabric comprises the following steps: (1) After the whole cotton cloth enters a jar, adjusting the bath ratio to be 1;
(2) Adding DS-1230 non-ionic penetrant and SP-521 multifunctional treating agent at 60 ℃ and then preserving heat;
(3) Adding a chelating agent 540A and a DS-1130 degreasing agent at 60 ℃, and then preserving heat;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature;
(5) Adding anhydrous sodium sulphate at 60 ℃, and keeping the temperature;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 20-30min, and then sampling;
(8) Draining water after sampling confirmation, and continuously cleaning;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to 1. Cleaning with clear water and taking out of the vat;
(11) Softening and dehydrating;
(12) And (5) drying and shaping.
The invention is suitable for all cotton knitted fabrics dark and deep color pretreatment-free one-bath one-step energy-saving dyeing, and has wide applicability and key selection of the assistant, because the initial pH value of the reactive dyeing bath is required to be about 7, the pH value of the used one-bath assistant is required to be controlled to be between 6 and 7, the actual measurement shows that the pH values of the SP-521 multifunctional treating agent, the DS-1130 degreasing agent and the DS-1230 non-ionic penetrating agent are all about 7, the pH value of the chelating agent 540A is about 6, and the initial pH value of the dyeing bath is about 7 after the application test through multiple sample comparison studies.
In addition, the auxiliary agent and the reactive dye are required to have good compatibility when dyeing cotton in one bath, namely, no ionic reaction exists between the auxiliary agent and the dye, so that the used one-bath auxiliary agent completely meets the requirements of the energy-saving dyeing process without pretreatment of all-cotton cloth in dark and deep colors, and finally the energy-saving dyeing process without pretreatment in one bath and one step of dark and deep colors of all-cotton knitted fabrics is realized. The DS-1230 nonionic penetrating agent is a compound of various special surfactants, has various dyeing and finishing processes such as excellent penetrating pretreatment, dyeing, printing, after finishing and the like, can be matched with various anionic and cationic auxiliaries and dyes for use, and has good compatibility. The chelating agent 540A is an anionic auxiliary agent and is used for complexing calcium and magnesium ions in water and precipitating impurities of grey cloth. The DS-1130 degreasing agent is a compound of nonionic surfactants, and has better compatibility and degreasing capability as a one-bath degreasing agent. The SP-521 multifunctional treating agent is an anionic auxiliary agent used as a cellulose fiber scouring and dyeing one-bath auxiliary agent, has good compatibility with reactive dyes, has extremely strong level dyeing effect, has the functions of emulsification, permeation, chelation and crease resistance, can be added with dyes without draining after being kept at 60 ℃ for a period of time, and can obtain good dyeing level dyeing property and reproducibility. The dyeing temperature of 60 ℃ is controlled, so that the grey cloth meets the qualified and stable cloth cover quality requirement, and the stability of vat chromatic aberration is improved
Preferably, the following substances are added in percentage by mass based on the total weight of the all-cotton knitted fabric: 1-2% of DS-1230 nonionic penetrating agent, 1.5-2% of SP-521 multifunctional treating agent, 0.5-1.5% of chelating agent 540A, 0.5-1.5% of DS-1130 oil removing agent, 1.5-8% of reactive dye, 30-75% of anhydrous sodium sulphate, 15-25% of sodium carbonate and 0.5-2% of active soaping agent. By controlling the dosage of the auxiliary agent, the grey cloth further meets the qualified and stable cloth cover quality requirement, and meanwhile, the stability of vat color difference is improved.
Preferably, the heat preservation time in the step (1) is 3-5min. The grey cloth is moistened after the temperature is kept for a proper time, and the auxiliary agent is prevented from directly contacting with the dry cloth to cause auxiliary agent marks.
Preferably, the heat preservation time in the step (2) is 8-10min. Ensures enough heat preservation time, is beneficial to the permeation and lubrication of the auxiliary agent into the grey cloth, and improves the permeation performance and crease resistance of the grey cloth.
Preferably, the heat preservation time in the step (3) is 8-10min. The heat preservation time of 8-10min is favorable for the complexation of calcium and magnesium ions in water and the removal of greasy dirt on cloth surfaces, and simultaneously ensures that the SP-521 multifunctional treating agent has sufficient heat preservation time before adding dye, thereby being favorable for the uniform coloring of the dye.
Preferably, the heat preservation time in the step (4) is 6-10min. Can ensure the dye to be adsorbed uniformly before adding the sodium sulphate.
Preferably, the heat preservation time in the step (5) is 10-15min. Can ensure the adsorption balance of the dye before adding alkali and prevent the occurrence of color bloom or color difference caused by early addition of alkali.
Preferably, the condition for continuous washing in step (8) is 40 ℃/30min.
Therefore, the invention has the following beneficial effects: (1) The method breaks through the traditional floating dyeing two-bath two-step or refining dyeing two-bath two-step process, omits the floating refining time, reduces the energy consumption, obtains better cloth cover effect because of the shortened time, has the color fastness consistent with the conventional process, has the characteristics of simple process, short processing flow and good color reproducibility compared with the conventional process, and meets the requirements of energy conservation and emission reduction;
(2) Through screening the auxiliary agent and testing and controlling the initial pH value of the dye bath to be about 7, the level-dyeing property of dyeing is improved, and dyeing defects are prevented;
(3) The grey cloth meets the qualified and stable cloth cover quality requirement by controlling the dyeing temperature and the accurate control of the using amount of the auxiliary agent, and simultaneously, the stability of vat chromatic aberration is improved;
(4) Through the correct control of the links, the dark and deep color pretreatment-free one-bath one-step energy-saving dyeing process of the all-cotton knitted fabric can be stored in a control computer of the dyeing machine, so that the one-time success rate of dyeing is improved.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.
Example 1-navy cyan is based on the total weight of all-cotton knitted fabric, and the following materials are added in percentage by mass: reactive dye KN-B3%, reactive dye HF-3BX red 1%, reactive dye HF-3RX yellow 1%, anhydrous sodium sulphate 70%, soda ash 20%, DS-1130 oil remover 0.5%, chelating agent 540A0.5%, SP-521 multifunctional treating agent 1.5%, DS-1230 nonionic penetrating agent 1%, glacial acetic acid 0.5% and Jacksi SW (reactive dye soaping agent) 0.5%.
The process comprises the following steps: (1) After the whole cotton cloth enters the jar, adjusting the bath ratio to be 1;
(2) Adding DS-1230 nonionic penetrant and SP-521 multifunctional treating agent at 60 deg.C, and keeping the temperature for 8min;
(3) Adding chelating agent 540A and DS-1130 degreasing agent at 60 ℃, and then preserving heat for 10min;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature for 6min at 60 ℃;
(5) Adding anhydrous sodium sulphate at 60 deg.C, and keeping the temperature for 10min;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 30min and then sampling;
(8) Draining after sampling confirmation, and continuously cleaning at 40 ℃/30min;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to 1. Cleaning with clear water and taking out of the vat;
(11) Softening and dehydrating;
(12) And (5) drying and shaping.
Example 2-wine red is based on the total weight of all-cotton knitted fabric, and the following substances are added in percentage by mass: 0.5 percent of reactive dye S-G, 1.8 percent of reactive dye S-D red, 1 percent of reactive dye W-3R orange, 60 percent of anhydrous sodium sulphate, 20 percent of soda ash, 0.5 percent of DS-1130 oil remover, 540A0.5 percent of chelating agent, 1.5 percent of SP-521 multifunctional treating agent, 1 percent of DS-1230 nonionic penetrating agent, 0.5 percent of glacial acetic acid and 1.5 percent of Jacksi SW (reactive soaping agent).
The process comprises the following steps: (1) After the whole cotton cloth is put into a cylinder, adjusting the bath ratio to be 1;
(2) Adding DS-1230 nonionic penetrant and SP-521 multifunctional treating agent at 60 deg.C, and keeping the temperature for 9min;
(3) Adding chelating agent 540A and DS-1130 degreasing agent at 60 deg.C, and keeping the temperature for 8min;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature for 10min at 60 ℃;
(5) Adding anhydrous sodium sulphate at 60 deg.C, and keeping the temperature for 15min;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 30min and then sampling;
(8) Draining after sampling confirmation, and continuously cleaning at 40 ℃/30min;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to 1. Cleaning with clear water and taking out of the tank;
(11) Softening and dehydrating;
(12) And (5) drying and shaping.
Example 3-black is based on the total weight of all-cotton knitted fabric, and the following substances are added in percentage by mass: 6 percent of reactive dye ED-H black, 0.5 percent of reactive dye HF-3BX red, 0.6 percent of reactive dye HF-3RX yellow, 70 percent of anhydrous sodium sulphate, 20 percent of soda ash, 0.5 percent of DS-1130 oil remover, 540A0.5 percent of chelating agent, 1.5 percent of SP-521 multifunctional treating agent, 1 percent of DS-1230 nonionic penetrating agent, 0.5 percent of glacial acetic acid and 0.5 percent of Jacksol SW (reactive dye soaping agent).
The process comprises the following steps: (1) After the whole cotton cloth is put into a cylinder, adjusting the bath ratio to be 1;
(2) Adding DS-1230 nonionic penetrant and SP-521 multifunctional treating agent at 60 deg.C, and keeping the temperature for 10min;
(3) Adding chelating agent 540A and DS-1130 degreasing agent at 60 deg.C, and keeping the temperature for 9min;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature for 8min;
(5) Adding anhydrous sodium sulphate at 60 deg.C, and keeping the temperature for 12min;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 30min and then sampling;
(8) Draining after sampling confirmation, and continuously cleaning at 40 ℃/30min;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to 1. Cleaning with clear water and taking out of the vat;
(11) Softening and dehydrating;
(12) And (5) drying and shaping.
Example 4-navy cyan is based on the total weight of all-cotton knitted fabric, and the following substances are added in percentage by mass: 1% of reactive dye KN-B black, 0.2% of reactive dye HF-3BX red, 0.3% of reactive dye HF-3RX yellow, 30% of anhydrous sodium sulphate, 15% of soda ash, 2% of DS-1130 oil removing agent, 540A1.5% of chelating agent, 2% of SP-521 multifunctional treating agent, 1.5% of DS-1230 nonionic penetrating agent, 0.5% of glacial acetic acid and 2% of Jacksi SW (reactive dye soaping agent).
The process comprises the following steps: (1) After the whole cotton cloth is put into a cylinder, adjusting the bath ratio to be 1;
(2) Adding DS-1230 nonionic penetrant and SP-521 multifunctional treating agent at 60 ℃, and then preserving heat for 10min;
(3) Adding chelating agent 540A and DS-1130 degreasing agent at 60 deg.C, and keeping the temperature for 9min;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature for 6min at 60 ℃;
(5) Adding anhydrous sodium sulphate at 60 deg.C, and keeping the temperature for 10min;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 20min, and then sampling;
(8) Draining after sampling confirmation, and continuously cleaning at 40 ℃/30min;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to 1. Cleaning with clear water and taking out of the vat;
(11) Softening and dehydrating;
(12) And (5) drying and shaping.
The examples 1 to 4 are all large-product production examples, and the dyed grey cloth is uniform in cloth cover and stable in color difference. And the same kind of auxiliary agents are produced by adding a large jar into the small sample, and the dyeing process steps which are the same as those of the large-goods production are used, so that the reproducibility of the small sample can be improved. Taking the black cotton of the example 3 as an example, the quality indexes such as soaping color fastness, light fastness, pilling and the like are tested to meet the industrial standard and the customer requirement, the energy consumption reaches the expected target, and the test comparison results are as follows:
1. comparison of various black energy consumptions
2. The cotton black fastness and other comparisons are as follows:
from the above table, the dark color pretreatment-free one-bath one-step energy-saving dyeing method for the all-cotton knitted fabric breaks through the traditional bleaching-bottom dyeing two-bath two-step or refining dyeing two-bath two-step process, omits the bleaching-bottom refining time, reduces the energy consumption, obtains better cloth cover effect due to the shortened time, has the color fastness consistent with the conventional process, has the characteristics of simple process, short processing flow and good color reproducibility compared with the conventional process, meets the requirements of energy conservation and emission reduction, and has remarkable effect when being applied to the dark color pretreatment-free one-bath one-step energy-saving dyeing of the all-cotton knitted fabric.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A dark and deep color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabrics is characterized by comprising the following steps of:
(1) After the whole cotton cloth enters a jar, adjusting the bath ratio to be 1;
(2) Adding DS-1230 nonionic penetrant and SP-521 multifunctional treating agent at 60 ℃ and then preserving heat;
(3) Adding a chelating agent 540A and a DS-1130 degreasing agent at 60 ℃, and then preserving heat;
(4) Adding the reactive dye after melting at 60 ℃ and keeping the temperature;
(5) Adding anhydrous sodium sulphate at 60 ℃, and keeping the temperature;
(6) Adding sodium carbonate at 60 ℃;
(7) Keeping the temperature at 60 ℃ for 20-30min, and then sampling;
(8) Draining water after sampling confirmation, and continuously cleaning;
(9) Changing water, adjusting the bath ratio to 1;
(10) Changing water, adjusting the bath ratio to be 1;
(11) Softening and dehydrating;
(12) Drying and shaping;
based on the total weight of all-cotton knitted fabric, the materials are added in the following mass percentage: 1-2% of DS-1230 nonionic penetrating agent, 1.5-2% of SP-521 multifunctional treating agent, 0.5-1.5% of chelating agent 540A, 0.5-1.5% of DS-1130 oil removing agent, 1.5-8% of reactive dye, 30-75% of anhydrous sodium sulphate, 15-25% of sodium carbonate and 0.5-2% of active soaping agent.
2. The dark color pretreatment-free one-bath one-step energy-saving dyeing method of all-cotton knitted fabrics according to claim 1, characterized in that the heat preservation time in the step (1) is 3-5min.
3. The dark color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabrics according to claim 1, characterized in that the heat preservation time in the step (2) is 8-10min.
4. The dark color pretreatment-free one-bath one-step energy-saving dyeing method of all-cotton knitted fabrics according to claim 1, characterized in that the heat preservation time in the step (3) is 8-10min.
5. The dark and deep color pretreatment-free one-bath one-step energy-saving dyeing method for all-cotton knitted fabrics according to claim 1, characterized in that the heat preservation time in the step (4) is 6-10min.
6. The dark color pretreatment-free one-bath one-step energy-saving dyeing method of all-cotton knitted fabrics according to claim 1, characterized in that the heat preservation time in the step (5) is 10-15min.
7. The dark color pretreatment-free one-bath one-step energy-saving dyeing method of all-cotton knitted fabrics according to claim 1, characterized in that the continuous cleaning condition in the step (8) is 40 ℃/30min.
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| CN113373707A (en) * | 2021-06-21 | 2021-09-10 | 济宁如意新材料技术有限公司 | Dyeing process for colored spun yarn textile |
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