CN111020774A - Production process of modal knitted fabric capable of forming heterochromatic effect - Google Patents
Production process of modal knitted fabric capable of forming heterochromatic effect Download PDFInfo
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- CN111020774A CN111020774A CN201911148895.2A CN201911148895A CN111020774A CN 111020774 A CN111020774 A CN 111020774A CN 201911148895 A CN201911148895 A CN 201911148895A CN 111020774 A CN111020774 A CN 111020774A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metals; with persulfuric, permanganic, pernitric, percarbonic acids or their salts
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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
- D06P3/82—Textiles which contain different kinds of fibres
- D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/38—Polyurethanes
Abstract
The invention relates to the technical field of textile, in particular to a production process of modal knitted fabric with a self-formed heterochrosis effect, which is characterized in that modified modal fibers and modal fibers are selected as raw materials, the dyeing characteristic of the modified modal fibers is utilized, and the modified modal fibers and the modal fibers are blended together to obtain a good heterochrosis effect in dyeing without losing the characteristic of the fabric, so that the natural property of the fabric is ensured and the fabric conforms to the concept of environmental protection, and is suitable for close-fitting clothes such as children's clothes, underwear and the like. In addition, the modal fiber is utilized to have small dyeing force under the conditions of no salt, no alkali and short dyeing time, but the modified modal fiber has high dyeing speed and strong adsorption capacity after color obtaining, so that the modal fiber can fade and the modified modal fiber does not fade in the subsequent alkali boiling process, and thus, a good heterochromatic effect is obtained.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a production process of modal knitted fabric capable of forming a heterochromatic effect.
Background
Along with the improvement of living standard of people, the requirements of people on wearing quality are higher and higher, and especially the requirements on functionality and appearance of the fabric of clothes are higher and higher.
In the prior art, the dyeing process is required when the cellulose fibers such as cotton, regenerated cellulose, viscose, modal and the like are used for manufacturing the fabric, and the dyes, the auxiliaries and the conditions used in the dyeing process are the same, so that the fabric which is pure in color and is obtained by blending and dyeing the fibers can be uneven in the dyeing process, so that the complete heterochromatic effect cannot be achieved, if the heterochromatic effect is required to be obtained, only the fibers can be used for spinning the yarn after dyeing, and the obtained yarn has the grey effect. Therefore, the fabric obtained by the process in the prior art has poor heterochromatic effect, loses the characteristics of the fabric, does not accord with the concept of environmental protection, and is not suitable for next-fit clothes such as children's clothes, underwear and the like.
Disclosure of Invention
The invention aims to provide a production process of modal knitted fabric with self-formed heterochrosis effect aiming at the defects of the prior art, the fabric produced by the production process of the modal knitted fabric with self-formed heterochrosis effect has good heterochrosis effect, does not lose the characteristics of the fabric, accords with the concept of environmental protection, and is suitable for close-fitting clothes such as children's clothes, underwear and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the production process of the modal knitted fabric capable of forming the heterochromatic effect comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
10 to 30 percent of modified modal fiber
70-90% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber;
step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: performing cloth boiling treatment on the fabrics with non-bright color requirements, and performing bleaching treatment on the fabrics with bright color requirements;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye solution is controlled; adding a non-ionic refining agent or a penetrating agent before dyeing, dyeing at low temperature, adding a dye, keeping the temperature for a certain time, slowly heating, boiling alkali, adjusting acid, and taking out of a cylinder;
step six, shaping: and (3) setting the dyed fabric at a certain temperature to obtain the modal knitted fabric with the self-formed heterochromatic effect.
In the above technical solution, in the first step, the modified modal fiber is produced and provided by texas huayuan ecological technology ltd.
In the above technical solution, preferably, in the step one, the modified modal fiber and the modal fiber are selected and used as raw materials according to the following weight percentages:
20 percent of modified modal fiber
80% of modal fiber.
In the above technical scheme, in the fourth step, the fabric with the non-bright color requirement is subjected to fabric boiling treatment, and the specific operations are as follows: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 10-20 min at 90-100 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water.
In the above technical scheme, in the fourth step, the fabric with bright color requirement is bleached, and the specific operations are as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling at 90-100 ℃ for 20-30 min, washing with clear water, then pickling to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide.
In the technical scheme, in the fifth step, the fabric pretreated in the fourth step is dyed by using a reactive dye, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye solution is controlled to be 6-7.5; and adding a non-ionic refining agent or a penetrating agent before dyeing, dyeing at the low temperature of 28-32 ℃, then adding a dye, keeping the temperature for 20-30 min, slowly heating to 50-60 ℃, then boiling alkali, adjusting the acid and taking out of the vat.
In the above technical scheme, in the fifth step, the dye is added in a manner of adding a little dye and adding a much dye, and the adding time is controlled to be 15-20 min.
In the technical scheme, in the sixth step, the dyed fabric is shaped at 160-170 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the production process of the modal knitted fabric capable of forming the heterochromatic effect by self, the modified modal fiber and the modal fiber are selected as raw materials, the dyeing characteristic of the modified modal fiber is utilized, the modified modal fiber and the modal fiber are blended together, the good heterochromatic effect is obtained in dyeing, the characteristic of the fabric is not lost, the natural property of the fabric is ensured, the concept of environmental protection is met, and the production process is suitable for close-fitting clothes such as children's clothes, underwear and the like.
(2) According to the production process of the modal knitted fabric capable of forming the heterochromatic effect, provided by the invention, the modal fiber is utilized to have small dyeing force under the conditions of no salt, no alkali and short dyeing time, but the modified modal fiber has high dyeing speed and strong adsorption capacity after color obtaining, so that the modal fiber can fade and the modified modal fiber does not fade in the subsequent alkali boiling process, and thus, a good heterochromatic effect is obtained.
(3) The production process of the modal knitted fabric capable of forming the heterochromatic effect has the characteristics of simple process, low production cost and suitability for large-scale production.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1.
A production process of modal knitted fabric capable of forming different color effects comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
20 percent of modified modal fiber
80% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber; wherein the modified modal fiber is produced and provided by Texas Huayuan ecological technology Co.
Step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: the fabric boiling treatment of the fabrics with non-bright color requirements comprises the following specific operations: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 15min at 95 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water; the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling the fabric at 95 ℃ for 25min, washing the fabric with clear water, then pickling the fabric to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye liquor is controlled to be 7; adding a non-ionic refining agent or penetrating agent before dyeing, dyeing at the low temperature of 30 ℃, then adding a dye, keeping the temperature for 25min, slowly heating to 55 ℃, then boiling alkali, adjusting acid and taking out of a cylinder; wherein, the dye is added in a way of reducing the amount of the dye firstly and then increasing the amount of the dye, and the adding time is controlled to be 18 min;
step six, shaping: and (3) setting the dyed fabric at 165 ℃ to obtain the modal knitted fabric with the self-forming heterochromatic effect.
Example 2.
A production process of modal knitted fabric capable of forming different color effects comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
modified Modal fiber 10%
90% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber; wherein the modified modal fiber is produced and provided by Texas Huayuan ecological technology Co.
Step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: the fabric boiling treatment of the fabrics with non-bright color requirements comprises the following specific operations: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 20min at 90 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water; the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling the fabric at 90 ℃ for 30min, washing the fabric with clear water, then pickling the fabric to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye liquor is controlled to be 6; adding a non-ionic refining agent or penetrating agent before dyeing, dyeing at the low temperature of 28 ℃, then adding a dye, keeping the temperature for 30min, slowly heating to 50 ℃, then boiling alkali, adjusting acid and taking out of a cylinder; wherein, the dye is added in a way of reducing the amount of the dye firstly and then increasing the amount of the dye, and the adding time is controlled to be 15 min;
step six, shaping: and (3) setting the dyed fabric at 160 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
Example 3.
A production process of modal knitted fabric capable of forming different color effects comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
30 percent of modified modal fiber
70% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber; wherein the modified modal fiber is produced and provided by Texas Huayuan ecological technology Co.
Step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: the fabric boiling treatment of the fabrics with non-bright color requirements comprises the following specific operations: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 10min at 100 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water; the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling the fabric at 100 ℃ for 20min, washing the fabric with clear water, then pickling the fabric to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye liquor is controlled to be 7.5; adding a non-ionic refining agent or penetrating agent before dyeing, dyeing at the low temperature of 32 ℃, then adding a dye, keeping the temperature for 20min, slowly heating to 60 ℃, then boiling alkali, adjusting acid and taking out of a cylinder; wherein, the dye is added in a way of reducing the amount of the dye firstly and then increasing the amount of the dye, and the adding time is controlled to be 20 min;
step six, shaping: and (3) setting the dyed fabric at 170 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
Example 4.
A production process of modal knitted fabric capable of forming different color effects comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
modified modal fiber 15%
85% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber; wherein the modified modal fiber is produced and provided by Texas Huayuan ecological technology Co.
Step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: the fabric boiling treatment of the fabrics with non-bright color requirements comprises the following specific operations: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 18min at 92 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water; the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling the fabric at 92 ℃ for 28min, washing the fabric with clear water, then pickling the fabric to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye liquor is controlled to be 6.5; adding a non-ionic refining agent or penetrating agent before dyeing, dyeing at the low temperature of 29 ℃, then adding a dye, keeping the temperature for 28min, slowly heating to 53 ℃, then boiling alkali, adjusting acid and taking out of a cylinder; wherein, the dye is added in a way of reducing the amount of the dye firstly and then increasing the amount of the dye, and the adding time is controlled to be 16 min;
step six, shaping: and (3) setting the dyed fabric at 162 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
Example 5.
A production process of modal knitted fabric capable of forming different color effects comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
25 percent of modified modal fiber
75% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber; wherein the modified modal fiber is produced and provided by Texas Huayuan ecological technology Co.
Step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: the fabric boiling treatment of the fabrics with non-bright color requirements comprises the following specific operations: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 12min at 98 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water; the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling the fabric at 98 ℃ for 22min, washing the fabric with clear water, then pickling the fabric to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye liquor is controlled to be 7.3; adding a non-ionic refining agent or penetrating agent before dyeing, dyeing at the low temperature of 31 ℃, then adding a dye, keeping the temperature for 22min, slowly heating to 58 ℃, then boiling alkali, adjusting acid and taking out of a cylinder; wherein, the dye is added in a way of reducing the amount of the dye firstly and then increasing the amount of the dye, and the adding time is controlled to be 19 min;
step six, shaping: and (3) setting the dyed fabric at 168 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A production process of modal knitted fabric capable of forming different color effects is characterized by comprising the following steps: it comprises the following steps:
step one, fiber selection: selecting modified modal fibers and taking the modified modal fibers and the modal fibers as raw materials according to the following weight percentage:
10 to 30 percent of modified modal fiber
70-90% of modal fiber;
wherein, the modified modal fiber is obtained by adding a cation environment-friendly auxiliary agent into the modal fiber;
step two, spinning: blending the modified modal fibers and the modal fibers according to the formula of the first step to obtain blended yarns;
step three, weaving: weaving the blended yarns obtained in the step two and spandex fibers according to different fabric styles to obtain fabrics;
step four, pretreatment of cloth boiling or bleaching: performing cloth boiling treatment on the fabrics with non-bright color requirements, and performing bleaching treatment on the fabrics with bright color requirements;
step five, salt-free and alkali-free dyeing of reactive dye: selecting reactive dye to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye solution is controlled; adding a non-ionic refining agent or a penetrating agent before dyeing, dyeing at low temperature, adding a dye, keeping the temperature for a certain time, slowly heating, boiling alkali, adjusting acid, and taking out of a cylinder;
step six, shaping: and (3) setting the dyed fabric at a certain temperature to obtain the modal knitted fabric with the self-formed heterochromatic effect.
2. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: in the first step, the modified modal fiber is produced and provided by ecological technology limited of Huayuan, Texas.
3. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: in the first step, modified modal fibers and modal fibers are selected and used as raw materials according to the following weight percentage:
20 percent of modified modal fiber
80% of modal fiber.
4. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: in the fourth step, the fabric with the non-bright color requirement is subjected to fabric boiling treatment, and the specific operations are as follows: adding a non-ionic refining agent or penetrating agent into the fabric, boiling for 10-20 min at 90-100 ℃ to remove oil stains and stains on the fabric, fully wetting the fabric, and cleaning with clear water.
5. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: in the fourth step, the fabric with bright color requirement is bleached, and the specific operation is as follows: adding hydrogen peroxide, sodium hydroxide and a chelating agent into the fabric, bleaching and boiling at 90-100 ℃ for 20-30 min, washing with clear water, then pickling to adjust the pH value to be close to neutral, and adding deoxyenzyme to remove residual hydrogen peroxide.
6. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: in the fifth step, a reactive dye is selected to dye the fabric pretreated in the fourth step, wherein salt and alkali are not added in the dyeing process of the dye, and the pH value of the dye solution is controlled to be 6-7.5; and adding a non-ionic refining agent or a penetrating agent before dyeing, dyeing at the low temperature of 28-32 ℃, then adding a dye, keeping the temperature for 20-30 min, slowly heating to 50-60 ℃, then boiling alkali, adjusting the acid and taking out of the vat.
7. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 6, wherein the process comprises the following steps: in the fifth step, the dye is added in a mode of less dye and more dye, and the charging time is controlled to be 15-20 min.
8. The process for producing a modal knitted fabric with self-created heterochromatic effect as recited in claim 1, wherein the process comprises the following steps: and in the sixth step, the dyed fabric is shaped at 160-170 ℃ to obtain the modal knitted fabric with the self-formed heterochromatic effect.
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