阅读说明：本技术 轻薄型腈纶和粘胶纤维的混纺针织面料的染色加工方法 (Dyeing processing method of blended knitted fabric of light and thin acrylic fibers and viscose fibers ) 是由 王晓艳 李江露 张琼 于 2020-06-17 设计创作，主要内容包括：本发明提供了一种轻薄型腈纶和粘胶纤维的混纺针织面料的染色加工方法,属于纺织技术领域。本染色加工方法包括如下步骤：对混纺针织面料进行前处理、对腈纶纤维进行染色、对染色后的腈纶纤维进行后处理、对粘胶纤维进行染色、对染色后的粘胶纤维进行后处理等。对轻薄型腈纶和粘胶纤维的混纺针织面料进行染色加工以节约用水的同时产生折印和色花。(The invention provides a dyeing processing method of a blended knitted fabric of light and thin acrylic fibers and viscose fibers, belonging to the technical field of spinning. The dyeing processing method comprises the following steps: the method comprises the steps of pretreating the blended knitted fabric, dyeing acrylic fibers, post-treating the dyed acrylic fibers, dyeing viscose fibers, post-treating the dyed viscose fibers and the like. The blended knitted fabric of the light and thin acrylic fibers and the viscose fibers is dyed to save water and generate crease marks and color patterns.)

1. A dyeing processing method of blended knitted fabric of light and thin acrylic fiber and viscose fiber is characterized by comprising the following steps:

1) and pretreating the blended knitted fabric:

A. according to the following steps of 1: 10, adding water and a degreasing agent into the dyeing machine at a bath ratio of 2g/L, and running for 5 min;

B. heating to 80 deg.C, and maintaining for 20 min;

C. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

D. washing once;

E. adding glacial acid for neutralization, wherein the content of glacial acid is 0.2g/L, continuing for 6min, and draining off water;

2) dyeing acrylic fibers:

A. according to the following steps of 1: adding clear water, anhydrous sodium sulphate and a leveling agent into the bath ratio of 10 and the water absorption rate of the fabric; controlling the temperature at 40 ℃ and then adding glacial acid; wherein the content of the leveling agent is 1 percent, the content of the anhydrous sodium sulphate is 5g/L, and the content of the glacial acid is 0.1 g/L;

B. heating the dye and the glacial acid in the auxiliary cylinder to 80 ℃ and keeping the temperature for 10min, and then linearly adding the dye and the glacial acid into a dyeing machine; wherein the total dye proportion is 0.5%, the glacial acid content is 0.3g/L, the process of adding the dye and the glacial acid is 10min, then the operation is carried out for 5min, and the PH value in the dyeing machine is about 4.0 at the moment;

C. heating to 80 ℃ at the speed of 2 ℃/min, heating to 87 ℃ at the speed of 1 ℃/min, running for 8min, heating to 91 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 93 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 95 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 98 ℃ at the speed of 0.3 ℃/min, and keeping the temperature for 30 min;

D. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

3) and carrying out post-treatment on the dyed acrylic fiber:

A. draining water after dyeing is finished, and washing once;

B. according to the following steps of 1: adding clear water and a dispersing agent KFS into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving heat for 15 min; wherein the content of the dispersant KFS is 2.0 g/L;

C. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

D. washing the cloth surface once again;

E. adding glacial acid, wherein the content of glacial acid is 0.2g/L, continuing for 6min, and then draining;

F. washing the cloth surface again until the cloth surface is clean;

4) dyeing the viscose fibers:

A. according to the following steps of 1: adding clear water, a mixing agent HS and an in-bath anti-wrinkle agent into the bath ratio of 10 and the water absorption rate of the fabric, and running for 5 min; this step is carried out at 40 ℃; wherein the content of the mixture boiling HS is 1g/L, and the content of the anti-wrinkle agent in the bath is 2 g/L;

B. linearly adding anhydrous sodium sulphate for 10min until the weight of anhydrous sodium sulphate is 40 g/L; running for 10 min;

C. linearly adding British color clone dye for 30min until the dye accounts for 3.5%; running for 10 min;

D. linearly adding sodium carbonate for 25min until the sodium carbonate content is 2 g/L; running for 10 min;

E. linearly adding sodium carbonate for 20min until the sodium carbonate content is 6 g/L; running for 10 min;

F. linearly adding sodium carbonate for 20min until the sodium carbonate content is 12 g/L; running for 10 min;

G. heating to 60 deg.C at a rate of 0.7 deg.C/min, maintaining for 40min, and draining;

5) and carrying out post-treatment on the dyed viscose fiber:

A. draining water after dyeing is finished, and washing once;

B. adding glacial acid for neutralization, wherein the content of glacial acid is 0.5g/L, continuing for 6min, and then draining;

C. according to the following steps of 1: adding clear water and a detergent SC into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving the temperature for 20 min; wherein the content of the cleaning agent SC is 2 g/L;

D. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

E. washing twice with water;

F. adding glacial acid for neutralization, overflowing and washing for 10min until water in the tank is clear, and taking the cloth out of the tank; wherein the content of the glacial acid is 0.3 g/L;

adding the oil removing agent at low temperature for 5min in the pretreatment process of the blended knitted fabric, so that the temperature of the grey cloth is raised after the oil removing agent is uniformly carried;

in the whole dyeing process, the cooling speed is not more than 1 ℃/min, and the drainage temperature is not more than 60 ℃.

2. The method for dyeing thin acrylic fiber and viscose blended knitted fabric according to claim 1, wherein the dyeing machine is a high temperature and high pressure overflow dyeing machine manufactured by bazornia mechanical equipment ltd.

3. The dyeing processing method of blended knitted fabric of light and thin acrylic fiber and viscose fiber according to claim 1 or 2, characterized in that the pressure of the main pump of the dyeing machine is 1000, the nozzle is 50%, and the time of the circle is 100S/circle.

Technical Field

The invention belongs to the technical field of spinning, and relates to a dyeing processing method of a blended knitted fabric of light and thin acrylic fibers and viscose fibers.

Background

Acrylic fiber has the advantages of fluffiness, softness, heat preservation, light resistance, antibiosis and the like, and is also called artificial wool. The viscose fabric has good hygroscopicity, easy dyeing, full color spectrum, bright color, good color fastness, cotton essence and silk quality. The blended fabric of the two fibers is fluffy and soft, has moisture absorption and air permeability, has good hand feeling and drapability, and is not easy to fade. However, the difference between the two fibers is large, so that the dyeing processing difficulty is very high, and crease marks and color marks are easy to generate. The existing dye factory often adopts the increased bath ratio for dyeing, so that the water consumption is extremely high, and the production cost is higher.

Disclosure of Invention

The invention aims to provide a method for dyeing and processing a blended knitted fabric of light and thin acrylic fibers and viscose fibers aiming at the problems in the prior art, and the technical problem to be solved by the invention is how to dye and process the blended knitted fabric of the light and thin acrylic fibers and the viscose fibers so as to save water and simultaneously generate creases and color marks.

The purpose of the invention can be realized by the following technical scheme: a dyeing processing method of blended knitted fabric of light and thin acrylic fiber and viscose fiber is characterized by comprising the following steps:

1. pretreating the blended knitted fabric:

A. according to the following steps of 1: 10, adding water and a degreasing agent into the dyeing machine at a bath ratio of 2g/L, and running for 5 min;

B. heating to 80 deg.C, and maintaining for 20 min;

C. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

D. washing once;

E. adding glacial acid for neutralization, wherein the content of glacial acid is 0.2g/L, continuing for 6min, and draining off water;

2. dyeing acrylic fibers:

A. according to the following steps of 1: adding clear water, anhydrous sodium sulphate and a leveling agent into the bath ratio of 10 and the water absorption rate of the fabric; controlling the temperature at 40 ℃ and then adding glacial acid; wherein the content of the leveling agent is 1 percent, the content of the anhydrous sodium sulphate is 5g/L, and the content of the glacial acid is 0.1 g/L;

B. heating the dye and the glacial acid in the auxiliary cylinder to 80 ℃ and keeping the temperature for 10min, and then linearly adding the dye and the glacial acid into a dyeing machine; wherein the total dye proportion is 0.5%, the glacial acid content is 0.3g/L, the process of adding the dye and the glacial acid is 10min, then the operation is carried out for 5min, and the PH value in the dyeing machine is about 4.0 at the moment;

C. heating to 80 ℃ at the speed of 2 ℃/min, heating to 87 ℃ at the speed of 1 ℃/min, running for 8min, heating to 91 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 93 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 95 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 98 ℃ at the speed of 0.3 ℃/min, and keeping the temperature for 30 min;

D. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

after the acrylic fiber reaches the glass transition temperature during dyeing, the dye uptake of the cationic dye is increased rapidly, and the colored patterns are easy to form. The invention adopts step-type temperature rise for many times before and after the vitrification temperature, and the temperature control accuracy reaches 0.3 ℃/min so as to ensure the level-dyeing property of the acrylic fiber dyeing and avoid the color change.

3. Carrying out post-treatment on the dyed acrylic fiber:

A. draining water after dyeing is finished, and washing once;

B. according to the following steps of 1: adding clear water and a dispersing agent KFS into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving heat for 15 min; wherein the content of the dispersant KFS is 2.0 g/L;

C. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

D. washing the cloth surface once again;

E. adding glacial acid, wherein the content of glacial acid is 0.2g/L, continuing for 6min, and then draining;

F. washing the cloth surface again until the cloth surface is clean;

4. dyeing the viscose fibers:

A. according to the following steps of 1: adding clear water, a mixing agent HS and an in-bath anti-wrinkle agent into the bath ratio of 10 and the water absorption rate of the fabric, and running for 5 min; this step is carried out at 40 ℃; wherein the content of the mixture boiling HS is 1g/L, and the content of the anti-wrinkle agent in the bath is 2 g/L;

B. linearly adding anhydrous sodium sulphate for 10min until the weight of anhydrous sodium sulphate is 40 g/L; running for 10 min;

C. linearly adding British color clone dye for 30min until the dye accounts for 3.5%; running for 10 min;

D. linearly adding sodium carbonate for 25min until the sodium carbonate content is 2 g/L; running for 10 min;

E. linearly adding sodium carbonate for 20min until the sodium carbonate content is 6 g/L; running for 10 min;

F. linearly adding sodium carbonate for 20min until the sodium carbonate content is 12 g/L; running for 10 min;

G. heating to 60 deg.C at a rate of 0.7 deg.C/min, maintaining for 40min, and draining;

viscose fibres are less crystalline and less dense than cotton fibres and therefore absorb dye much more quickly and with a higher dye uptake than cotton. Furthermore, viscose fiber has a skin layer structure, dye is difficult to diffuse inwards, and surface dyeing is easy to generate. As such, viscose is highly susceptible to color bloom. The invention adopts the mode of prolonging the time of adding the dye and adding the sodium carbonate for three times to improve the level-dyeing property of dyeing and avoid dyeing defects.

5. Carrying out post-treatment on the dyed viscose fiber:

A. draining water after dyeing is finished, and washing once;

B. adding glacial acid for neutralization, wherein the content of glacial acid is 0.5g/L, continuing for 6min, and then draining;

C. according to the following steps of 1: adding clear water and a detergent SC into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving the temperature for 20 min; wherein the content of the cleaning agent SC is 2 g/L;

D. cooling to 60 ℃ at the speed of 1 ℃/min, and then draining;

E. washing twice with water;

F. adding glacial acid for neutralization, overflowing and washing for 10min until water in the tank is clear, and taking the cloth out of the tank; wherein the content of the glacial acid is 0.3 g/L;

it should be noted that: in the pretreatment process of the blended knitted fabric, the degreasing agent is added at low temperature for 5min, so that the temperature of the grey fabric is raised after the degreasing agent is uniformly carried, and the degreasing effect is better.

In the whole dyeing process, the cooling speed is required to be reduced when the fabric is cooled, preferably not more than 1 ℃/min, and the drainage temperature is not more than 60 ℃ so as to avoid crease caused by uneven cooling of the fabric surface during cooling and drainage.

And paying attention to the color fastness of the cloth in the soaping process after the acrylic fibers and the viscose fibers are dyed.

In the above method for dyeing and processing the blended knitted fabric of the light and thin acrylic fiber and the viscose fiber, the dyeing machine is a high-temperature high-pressure overflow dyeing machine manufactured by bazornia mechanical equipment ltd.

In the dyeing processing method of the blended knitted fabric of the light and thin acrylic fiber and the viscose fiber, the pressure of a main pump of the dyeing machine is 1000, the nozzle is 50%, and the circle time is 100S/circle.

During the dyeing process, attention is paid to the pressure of the main pump and the control of the ring, so as to reduce scratches and ensure the leveling property.

Compared with the prior art, the invention has the following advantages:

1. the invention utilizes the dyeing characteristic of the vitrification temperature of the acrylic fiber, adopts step-type temperature rise for multiple times before and after the vitrification temperature, and the temperature control accuracy reaches 0.3 ℃/min so as to ensure the level-dyeing property of the acrylic fiber dyeing and avoid dyeing defects.

2. According to the dyeing property of the viscose, the invention adopts the mode of prolonging the time of adding the dye and adding the soda ash for three times to improve the level-dyeing property of dyeing and avoid dyeing defects.

3. The invention solves the problem of dyeing defects by adjusting the dyeing process, reduces the bath ratio of dyeing and saves the production cost.

4. According to the invention, by controlling the cooling rate and the drainage temperature, the problem of crease caused by uneven cooling and uneven fiber shrinkage of the fabric is solved.

Drawings

FIG. 1 is a process flow diagram of the pretreatment of the blended knitted fabric in the invention;

FIG. 2 is a process diagram of dyeing acrylic fibers in the present invention;

FIG. 3 is a flow chart of the post-treatment process of acrylic fibers in the present invention;

FIG. 4 is a process diagram of the dyeing of viscose fibers in accordance with the present invention;

fig. 5 is a flow chart of the post-treatment process of viscose fiber in the present invention.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The equipment and equipment parameters are: the high-temperature high-pressure overflow dyeing machine produced by Suzhou Bazornia mechanical equipment Limited is adopted, the pressure of a main pump is 950, the nozzle is 50%, and the cycle time is 100S/cycle.

Pretreating the blended knitted fabric:

according to the following steps of 1: 10, adding water and a degreasing agent into the dyeing machine at a bath ratio of 2g/L, and running for 5 min; heating to 80 deg.C, and maintaining for 20 min; cooling to 60 ℃ at the speed of 1 ℃/min, and then draining; washing once; adding glacial acid to neutralize, wherein the content of glacial acid is 0.2g/L, maintaining for 6min, and draining off water.

Dyeing acrylic fibers:

according to the following steps of 1: adding clear water, anhydrous sodium sulphate and a leveling agent into the bath ratio of 10 and the water absorption rate of the fabric; controlling the temperature at 40 ℃ and then adding glacial acid; wherein the content of the leveling agent is 1 percent, the content of the anhydrous sodium sulphate is 5g/L, and the content of the glacial acid is 0.1 g/L; heating the dye and the glacial acid in the auxiliary cylinder to 80 ℃ and keeping the temperature for 10min, and then linearly adding the dye and the glacial acid into a dyeing machine; wherein the total dye proportion is 0.5%, the glacial acid content is 0.3g/L, the process of adding the dye and the glacial acid is 10min, then the operation is carried out for 5min, and the PH value in the dyeing machine is about 4.0 at the moment; heating to 80 ℃ at the speed of 2 ℃/min, heating to 87 ℃ at the speed of 1 ℃/min, running for 8min, heating to 91 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 93 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 95 ℃ at the speed of 0.3 ℃/min, running for 8min, heating to 98 ℃ at the speed of 0.3 ℃/min, and keeping the temperature for 30 min; cooling to 60 deg.C at a rate of 1 deg.C/min, and draining.

After the acrylic fiber reaches the glass transition temperature during dyeing, the dye uptake of the cationic dye is increased rapidly, and the colored patterns are easy to form. The invention adopts step-type temperature rise for many times before and after the vitrification temperature, and the temperature control accuracy reaches 0.3 ℃/min so as to ensure the level-dyeing property of the acrylic fiber dyeing and avoid the color change.

Carrying out post-treatment on the dyed acrylic fiber:

draining water after dyeing is finished, and washing once; according to the following steps of 1: adding clear water and a dispersing agent KFS into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving heat for 15 min; wherein the content of the dispersant KFS is 2.0 g/L; cooling to 60 ℃ at the speed of 1 ℃/min, and then draining; washing the cloth surface once again; adding glacial acid, wherein the content of glacial acid is 0.2g/L, continuing for 6min, and then draining; and washing the cloth surface again until the cloth surface is clean.

Dyeing the viscose fibers:

according to the following steps of 1: adding clear water, a mixing agent HS and an in-bath anti-wrinkle agent into the bath ratio of 10 and the water absorption rate of the fabric, and running for 5 min; this step is carried out at 40 ℃; wherein the content of the mixture boiling HS is 1g/L, and the content of the anti-wrinkle agent in the bath is 2 g/L; linearly adding anhydrous sodium sulphate for 10min until the weight of anhydrous sodium sulphate is 40 g/L; running for 10 min; linearly adding British color clone dye for 30min until the dye accounts for 3.5%; running for 10 min; linearly adding sodium carbonate for 25min until the sodium carbonate content is 2 g/L; running for 10 min; linearly adding sodium carbonate for 20min until the sodium carbonate content is 6 g/L; running for 10 min; linearly adding sodium carbonate for 20min until the sodium carbonate content is 12 g/L; running for 10 min; heating to 60 deg.C at a rate of 0.7 deg.C/min, maintaining for 40min, and draining.

Viscose fibres are less crystalline and less dense than cotton fibres and therefore absorb dye much more quickly and with a higher dye uptake than cotton. Furthermore, viscose fiber has a skin layer structure, dye is difficult to diffuse inwards, and surface dyeing is easy to generate. As such, viscose is highly susceptible to color bloom. The invention adopts the mode of prolonging the time of adding the dye and adding the sodium carbonate for three times to improve the level-dyeing property of dyeing and avoid dyeing defects.

Carrying out post-treatment on the dyed viscose fiber:

draining water after dyeing is finished, and washing once; adding glacial acid for neutralization, wherein the content of glacial acid is 0.5g/L, continuing for 6min, and then draining; according to the following steps of 1: adding clear water and a detergent SC into the bath ratio of 10 and the water absorption rate of the fabric, heating to 70 ℃, and then preserving the temperature for 20 min; wherein the content of the cleaning agent SC is 2 g/L; cooling to 60 ℃ at the speed of 1 ℃/min, and then draining; washing twice with water; adding glacial acid for neutralization, overflowing and washing for 10min until water in the tank is clear, and taking the cloth out of the tank; wherein the content of glacial acid is 0.3 g/L.

It should be noted that: in the pretreatment process of the blended knitted fabric, the degreasing agent is added at low temperature for 5min, so that the temperature of the grey fabric is raised after the degreasing agent is uniformly carried, and the degreasing effect is better.

In the whole dyeing process, the cooling speed is required to be reduced when the fabric is cooled, preferably not more than 1 ℃/min, and the drainage temperature is not more than 60 ℃ so as to avoid crease caused by uneven cooling of the fabric surface during cooling and drainage.

And paying attention to the color fastness of the cloth in the soaping process after the acrylic fibers and the viscose fibers are dyed.

The acrylic fiber and viscose blended knitted fabric treated by the processing method is subjected to a Datacolor 600TM type computer color measuring instrument to test the head, the tail, the middle, the left, the middle and the right color difference of the same piece of cloth and the maximum color difference value △_ECMC(2:1)0.17, average color difference value △_ECMC(2:1)The difference values of the head, the middle, the tail, the left, the middle and the right are small and meet the requirements of customers.

The fabric is tested after being shaped on the heat-setting machine, the cloth surface has even color, no crease and chicken feet print, and meets the requirements of customers.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.