CN112323313A - Cold pad-batch dyeing process for cotton knitted fabric - Google Patents
Cold pad-batch dyeing process for cotton knitted fabric Download PDFInfo
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- CN112323313A CN112323313A CN202011250880.XA CN202011250880A CN112323313A CN 112323313 A CN112323313 A CN 112323313A CN 202011250880 A CN202011250880 A CN 202011250880A CN 112323313 A CN112323313 A CN 112323313A
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- China
- Prior art keywords
- cotton knitted
- knitted fabric
- cold pad
- fabric
- batch dyeing
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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
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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
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
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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
- D06P1/44—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
-
- 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
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Coloring (AREA)
Abstract
The invention discloses a cold pad-batch dyeing process for cotton knitted fabrics, which mainly comprises the following implementation steps: the first step is as follows: carrying out a small sample experiment; the second step is that: pretreating knitted fabrics and preparing padding working solution; the third step: padding the cotton knitted fabric, and then putting the cotton knitted fabric into a self-sealing bag to discharge air; the fourth step: piling the cotton knitted fabric subjected to primary treatment at room temperature; i step, I: fixing color of the cotton knitted fabric by using an oven; and a sixth step: and washing the dried cotton knitted fabric with cold water, soaping, cold water washing, hot water washing and cold water, and drying to obtain a finished product. The process provides a more scientific, green and systematic method for dyeing the knitted fabric, improves the product competitiveness and is beneficial to promoting the development of the knitted fabric dyeing industry.
Description
Technical Field
The invention belongs to the field of textile engineering, and particularly relates to a cold pad-batch dyeing process for cotton knitted fabrics.
Background
The cold pad-batch dyeing process is prevalent in Europe and southeast Asia, and more dyeing and finishing enterprises in China in recent years use the process for pretreatment and dyeing of corduroy, so that better economic benefit is obtained. However, the cold pad-batch dyeing process has several major problems, which limit the wide application of the process to conventional fabrics. Although the cold pad-batch dyeing process still has some defects at present, compared with other dyeing methods, the cold pad-batch dyeing process has the advantages of minimum required mechanical equipment quantity, low energy consumption and quite flexible use. From the viewpoints of energy, water and chemical consumption, dyeing color yield, color fastness, applicability to modern mechanical equipment and ecology, the reactive dye cold pad-batch dyeing process for pure cotton fabrics is undoubtedly the most ideal dyeing method and is worthy of great popularization.
Disclosure of Invention
The present invention is directed to a cold pad-batch dyeing process for cotton knitted fabrics, which responds to the problems associated with the background art described above.
The purpose of the invention can be realized by the following technical scheme: a cold pad-batch dyeing process for cotton knitted fabrics mainly comprises the following implementation steps: the first step is as follows: the small sample experiment is an important link before cold pad-batch dyeing, the sample rate of cold pad-batch dyeing is improved, the difference between large samples and small samples is reduced, and the key for improving the production reproducibility and stability of the cold pad-batch dyeing industry is to reduce the batch difference between the front batch and the rear batch. The second step is that: the method comprises the following steps of (1) pretreating knitted fabrics, wherein the pretreated knitted fabrics have uniform and good water absorption and uniform and proper drying, and the cloth cover moisture content is generally 4-6%; the fabric should not contain chlorine and hydrogen peroxide residues, the pH value is 7-7.5, and the fabric needs to be fully cooled before entering a rolling groove to accelerate hydrolysis; the padding working solution is prepared by mixing the dye solution and the alkali liquor according to the volume ratio of 1:4, the dye solution and the alkali liquor are distributed and distributed, the dye solution and the alkali liquor are mixed before padding, the mixture is uniformly stirred and then poured into a roller groove of a padder, and the neutral salt is added to improve the substantivity of the dye, increase the color yield of the fabric and play a role in promoting the dyeing. The third step: the cotton knitted fabric is padded and then put into the self-sealing bag to exhaust air so as to prevent the cotton knitted fabric from contacting with acid gases in the air to neutralize alkaline agents, so that the dye liquor value is reduced to cause color difference, and simultaneously, the color difference caused by the change of the water carrying rate due to the evaporation of water can be prevented, wherein the cotton knitted fabric passes through a padder smoothly and uniformly during padding so as to prevent skirt wrinkles from influencing experimental results, and when the operation is repeatedly carried out, the front and back of the cotton knitted fabric must be ensured to be consistent. The fourth step: the cotton knitted fabric which is initially treated is piled at room temperature, and the cloth roll is kept to rotate continuously at a speed of 4-6 r/min in the piling process so as to prevent dye liquor carried by the fabric from dripping under the action of gravity and cause uneven dyeing. The fifth step: and fixing the color of the cotton knitted fabric by using an oven. And a sixth step: and washing the dried cotton knitted fabric with cold water, soaping, cold water washing, hot water washing and cold water, and drying to obtain a finished product.
The invention has the beneficial effects that: the process provides a more scientific, green and systematic method for dyeing the knitted fabric, further develops a knitted fabric cold pad batch serialization process with independent intellectual property rights, provides a technical reference for realizing the full-width continuous processing of the knitted fabric, improves the product competitiveness, and is beneficial to promoting the development of the knitted fabric dyeing industry.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Examples
A cold pad-batch dyeing process for cotton knitted fabrics mainly comprises the following implementation steps: the first step is as follows: the method is characterized in that a sample experiment is carried out on 5 parts of pure cotton knitted fabric, the sample experiment is an important link before cold pad-batch dyeing, the sample rate of cold pad-batch dyeing is improved, the sample difference between large samples and small samples is reduced, and the reduction of the batch difference between the large samples and the small samples is a key for improving the production reproducibility and stability of the cold pad-batch dyeing industry. The second step is that: the method comprises the following steps of (1) knitted fabric pretreatment, wherein pure cotton fabric is treated to have uniform and good water absorption, the pure cotton fabric is dried uniformly and properly, and the cloth cover moisture content is 4%; taking 100 parts of the treated fabric, fully cooling the fabric before entering a rolling groove to accelerate hydrolysis, wherein the fabric does not contain chlorine and hydrogen peroxide residues and has a pH value of 7; preparing a padding working solution, wherein the working solution is prepared by mixing a dye solution and an alkali liquor according to the volume ratio of 1:4, the dye solution and the alkali liquor are distributed and distributed at high speed, 2G/L of caustic soda, 1 part of annotine yellow brown L-F, 0.5 part of annotine red L-S and 1.5 parts of annotine dark blue L-3G are mixed together, and the mixture is mixed and stirred uniformly before padding and then poured into a roller groove of a padder, wherein 1.2 parts of neutral salt of housework improves the substantivity of the dye, increases the color yield of the fabric, and plays a role in accelerating the dyeing. The third step: the cotton knitted fabric is padded and then put into the self-sealing bag to exhaust air so as to prevent the cotton knitted fabric from contacting with acid gases in the air to neutralize alkaline agents, so that the dye liquor value is reduced to cause color difference, and simultaneously, the color difference caused by the change of the water carrying rate due to the evaporation of water can be prevented, wherein the cotton knitted fabric passes through a padder smoothly and uniformly during padding so as to prevent skirt wrinkles from influencing experimental results, and when the operation is repeatedly carried out, the front and back of the cotton knitted fabric must be ensured to be consistent. The fourth step: the cotton knitted fabric which is initially treated is piled at room temperature, the cloth roll keeps rotating continuously at the speed of 4r/min in the piling process so as to prevent dye liquor carried by the fabric from dripping under the action of gravity to cause uneven dyeing, and the pre-piling time is 50 min. The fifth step: and (3) fixing the color of the cotton knitted fabric by using an oven, wherein the color fixing temperature is 50 ℃, and the stacking time is 2 hours. And a sixth step: washing the dried cotton knitted fabric with cold water, soaping, cold water washing, hot water washing and cold water, and drying to obtain a finished product, wherein the soaping formula comprises 2g/L of soap flakes, 2g/L of sodium bicarbonate, a bath ratio of 1:30, a temperature of 98 ℃ and a time of 10 min.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A cold pad-batch dyeing process for cotton knitted fabrics is characterized by mainly comprising the following implementation steps: the first step is as follows: carrying out a small sample experiment; the second step is that: pretreating knitted fabrics and preparing padding working solution; the third step: padding the cotton knitted fabric, and then putting the cotton knitted fabric into a self-sealing bag to discharge air; the fourth step: piling the cotton knitted fabric subjected to primary treatment at room temperature; the fifth step: fixing color of the cotton knitted fabric by using an oven; and a sixth step: and washing the dried cotton knitted fabric with cold water, soaping, cold water washing, hot water washing and cold water, and drying to obtain a finished product.
2. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the factors influencing the cold pad-batch dyeing of the process knitted fabrics are pretreatment of the knitted fabrics, dyes, alkaline agents, auxiliaries, temperature, time and equipment.
3. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the pretreated fabric has to have uniform and good water absorption, uniform and proper drying, and the cloth cover moisture content is generally between 4% and 6%; the fabric should not contain chlorine and hydrogen peroxide residues, the pH value is 7-7.5, and the fabric needs to be fully cooled before entering a rolling groove to accelerate hydrolysis.
4. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the addition of neutral salt can improve the substantivity of the dye, increase the color yield of the fabric, and promote dyeing.
5. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the cloth roll is kept to rotate at a speed of 4-6 r/min during the stacking process to prevent dye liquor carried by the fabrics from dripping due to the action of gravity to cause uneven dyeing.
6. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the whole cloth roll should be wrapped with plastic film during stacking to prevent the alkali agent from being neutralized by contacting with acidic gas in the air, so that the dye liquor value is reduced to cause color difference, and the water carrying rate is changed to cause color difference due to water evaporation; in addition, the phenomenon that the cloth roll seam is printed due to different liquid carrying rates is prevented.
7. The cold pad-batch dyeing process for the cotton knitted fabric according to claim 1, characterized in that a small sample experiment is a very important link before cold pad-batch dyeing, the sample rate of cold pad-batch dyeing is improved, the difference between large and small samples is reduced, and the reduction of the batch difference before and after the cold pad-batch dyeing is a key for improving the production reproducibility and stability of the cold pad-batch dyeing industry.
8. The cold pad-batch dyeing process for the cotton knitted fabrics according to claim 1, characterized in that the working solution is prepared by mixing the dye solution and the alkali liquor according to the volume ratio of 1:4, the dye solution and the alkali liquor are prepared by dispersion, and the dye solution and the alkali liquor are mixed before padding, uniformly stirred and poured into a roller tank of a padder.
9. The cold pad-batch dyeing process for cotton knitted fabrics according to claim 1, characterized in that the fabric is passed through the padder evenly during padding to avoid the skirt wrinkles affecting the experimental results, and the consistency of the fabric must be ensured during repeated operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250880.XA CN112323313A (en) | 2020-11-11 | 2020-11-11 | Cold pad-batch dyeing process for cotton knitted fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250880.XA CN112323313A (en) | 2020-11-11 | 2020-11-11 | Cold pad-batch dyeing process for cotton knitted fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112323313A true CN112323313A (en) | 2021-02-05 |
Family
ID=74319087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011250880.XA Withdrawn CN112323313A (en) | 2020-11-11 | 2020-11-11 | Cold pad-batch dyeing process for cotton knitted fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112323313A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073481A (en) * | 2021-03-26 | 2021-07-06 | 常州旭荣针织印染有限公司 | Method for improving color fixing rate of CI reactive blue 19 in cotton knitted fabric |
-
2020
- 2020-11-11 CN CN202011250880.XA patent/CN112323313A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073481A (en) * | 2021-03-26 | 2021-07-06 | 常州旭荣针织印染有限公司 | Method for improving color fixing rate of CI reactive blue 19 in cotton knitted fabric |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210205 |
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| WW01 | Invention patent application withdrawn after publication |