CN119553523A

CN119553523A - A dyeing and finishing method for fabric containing lyocell fiber

Info

Publication number: CN119553523A
Application number: CN202510128964.2A
Authority: CN
Inventors: 夏亚辉; 仝晓婷; 毛军; 陆万宏
Original assignee: Jiangsu Goldsun Textile Science and Technology Co Ltd
Current assignee: Jiangsu Goldsun Textile Science and Technology Co Ltd
Priority date: 2025-02-05
Filing date: 2025-02-05
Publication date: 2025-03-04

Abstract

The invention relates to a dyeing and finishing method of a fabric containing lyocell, wherein mannitol, polyethylene glycol and silk amino acid are added into dyeing liquid before dyeing, the silk amino acid is used for promoting dyeing, mannitol is used for lubricating and inhibiting fiber, and the polyethylene glycol is used for stabilizing and enhancing synergy, so that the high-efficiency adsorption and diffusion of dye on the surface of the fiber are promoted, the dye attachment quantity is increased, the fiber gaps are reduced, the dyeing promoting effect is realized, the fiber opening risk is effectively reduced, and the fibrillation problem of the lyocell fiber in the dyeing process is solved.

Description

Dyeing and finishing method for fabric containing lyocell fibers

Technical Field

The invention relates to the technical field of textile, in particular to a dyeing and finishing method of a fabric containing lyocell fibers.

Background

Lyocell fibers are favored for their excellent properties, but suffer from fibrillation challenges in dyeing and finishing processes. The fiber macromolecular chain has the characteristics of high longitudinal orientation and low radial orientation, and is easy to split into micro fibers longitudinally under wet friction, so that flaws such as white spots, frostings and the like are caused, the processing flow is prolonged, and the consumption of energy and auxiliary agents is increased. Particularly in a jig dyeing machine, the radial swelling is aggravated by the presence of water, the transverse acting force between molecular chains is reduced, the fibrillation phenomenon is more remarkable under the mechanical action, and the problem is aggravated by the alkaline agent which is necessary in the dyeing process of the reactive dye.

Currently, anti-fibrillation measures for lyocell fabrics have been mainly focused on post-dyeing treatments, such as finishing with a cross-linking agent or resin. Although the methods can enhance the interaction among cellulose macromolecular chains and improve the anti-fibrillation effect, the fibrillation problem in the dyeing process can not be fundamentally solved. In addition, the cross-linking agent may cause a decrease in fabric strength, yellowing, and even affect the color depth, while the resin finishing may bring about a risk of formaldehyde overstock, limiting its application in anti-fibrillation of lyocell fibers.

Therefore, there is a need to develop a new technology capable of effectively preventing fibrillation during dyeing and finishing of lyocell fabric without affecting the strength and color of the fabric and maintaining good anti-fibrillation effect even under alkaline conditions.

Disclosure of Invention

The invention aims at solving the technical problem that a fabric containing lyocell fiber is easy to fibrillate in the dyeing and finishing process.

In order to achieve the above purpose, the present application is realized by the following technical scheme:

The application provides a dyeing and finishing method of fabric containing lyocell, which comprises the following steps of sequentially carrying out procedures of flame singeing, enzyme treatment, bleaching, dyeing, softening and shaping, calendaring and preshrinking on the fabric containing the lyocell,

In the dyeing process, firstly, mixing a fabric and first deionized water according to a bath ratio of 1:8-1:12, firstly adding mannitol, polyethylene glycol and silk amino acid into the first deionized water, fully stirring and mixing uniformly, then adding active dye into the first deionized water, fully stirring and mixing uniformly and standing for 10min, then adding 1/3 preset amount of anhydrous sodium sulfate, fully stirring and mixing uniformly and standing for 10min, then adding 2/3 preset amount of anhydrous sodium sulfate, fully stirring and mixing uniformly, heating to 50 ℃, adding 1/3 preset amount of sodium carbonate, fully stirring and mixing uniformly and keeping warm for 10min, then adding 1/3 preset amount of sodium carbonate, fully stirring and mixing uniformly, keeping warm for preset time, washing with clear water, and drying.

As a further improvement of the application, the concentration of mannitol is 5 g/L-15 g/L, the concentration of polyethylene glycol is 5 g/L-15 g/L, and the concentration of silk amino acid is 5 g/L-15 g/L.

The dyeing process is further improved, and the softening and shaping process is further preceded by a softening and washing process, wherein in the softening and washing process, firstly, the fabric and second deionized water are mixed according to a bath ratio of 1:8-1:12, citric acid is added into the second deionized water, the mixture is sufficiently stirred to adjust the pH value of the second deionized water to 6.0-6.5, the temperature is raised to 50-60 ℃, enzyme water is added into the second deionized water, the mixture is sufficiently stirred and mixed to enable the mass percent of the enzyme water to be 0.5-1.5%, and after the mixture is kept warm for 40-60 min, the fabric is taken out, washed with clear water, and dried.

As a further improvement of the application, the fabric is conveyed into an air beater after the softening and sizing process, the temperature of the air beater is 45-55 ℃, the speed of the air beater is 25-35 m/min, and the flow of up-and-down blowing of the air beater is set to be 50-70%.

As a further improvement of the application, the fire hole singeing adopts a two-to-one or two-to-two reverse singeing mode, the speed of a gas singeing machine adopted in the fire hole singeing process is 90-110 m/mm, and the fire hole temperature of the fire hole singeing is 1100-1300 ℃.

In the bleaching process, firstly, the fabric and third deionized water are mixed according to a bath ratio of 1:8-1:12, a refining agent, hydrogen peroxide and sodium carbonate are sequentially added into the third deionized water, the mixture is sufficiently stirred, the concentration of the refining agent is 2 g/L-4 g/L, the concentration of the hydrogen peroxide is 3 g/L-5 g/L, the concentration of the sodium carbonate is 2 g/L-4 g/L, the temperature is raised to 90 ℃ to 100 ℃, the temperature is kept for 80-100 min, and the fabric is taken out, washed under clear water at 90 ℃ to 100 ℃ and dried.

As a further improvement of the application, in the softening and shaping process, firstly, the fabric is placed in a softening agent containing 30-50 g/L for being immersed and bound, and then the fabric is sent into a shaping machine, the temperature of a heating area of the shaping machine is 140-160 ℃, and the speed of the shaping machine is 30-50 m/mm.

As a further improvement of the application, the dyeing machine used in the dyeing process is a high-temperature high-pressure overflow dyeing machine.

As a further improvement of the application, the reactive dye can be any one of, but not limited to, double-reactive group reactive dye, monochloro-s-triazine reactive dye and vinyl sulfone reactive dye, and other different dyes are also applicable to the proposal of the application, so that the same effect is improved.

The dyeing and finishing method has the beneficial effects that mannitol, polyethylene glycol and silk amino acid are added into dyeing liquid before dyeing, silk amino acid is promoted to dye, mannitol is lubricated and fiber is inhibited, polyethylene glycol is stable and synergistic, the three synergistic effects are synergistic, the efficient adsorption and diffusion of dye on the surface of the fiber are promoted, the dye attachment quantity is increased, fiber gaps are reduced, the dyeing promoting effect is realized, the fiber opening risk is effectively reduced, and the fibrillation problem of the lyocell fiber in the dyeing process is solved.

The silk amino acid promotes dye adsorption and permeation by virtue of the strong affinity of the silk amino acid and the reactive dye, and meanwhile, the loose structure of the silk amino acid provides a channel for the dye, so that the dyeing effect is improved. Mannitol is used as a natural lubricant and is adsorbed on the surface of the fiber to form a lubricating film, so that the friction coefficient between the fibers is obviously reduced, and fibrillation is effectively inhibited. The addition of polyethylene glycol not only enhances the stability and compactness of the lubricating layer, but also further reduces the friction interface and enhances the dispersion and permeation efficiency of silk amino acid and dye.

Detailed Description

The technical solutions of the present application will be clearly and completely described in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In order that the above-recited objects, features and advantages of the present application will become more apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof.

Example 1

The embodiment provides a dyeing and finishing method of a fabric containing lyocell fibers, wherein the specification of the fabric is that the fabric is of a lyocell 60S×lyocell 60S/182×120 satin, and the fabric is sequentially subjected to the following treatment steps of flame singeing, enzyme treatment, bleaching, dyeing, softening and shaping, calendaring and preshrinking. In particular, the method comprises the steps of,

In the flame port singeing process, the fabric is conveyed into a gas singeing machine, the flame port positions adopt a double-positive double-negative singeing mode, the speed of the gas singeing machine is 100 m/mm, and the flame port temperature is 1200 ℃.

In the enzyme treatment process, the conventional lyocell fabric enzyme pile desizing process in the textile field is adopted for treatment, and enzyme inactivation and water washing are carried out after the treatment.

In the bleaching process, firstly, placing the fabric in a jig dyeing machine, adding third deionized water into the jig dyeing machine, mixing the fabric and the third deionized water according to a bath ratio of 1:10, sequentially adding a refining agent, hydrogen peroxide and sodium carbonate into the third deionized water, wherein the concentration of the refining agent is 3g/L, the concentration of the hydrogen peroxide is 4g/L, the concentration of the sodium carbonate is 3g/L, fully stirring, heating to 95 ℃, preserving heat for 90min, taking out the fabric, washing under clear water at 95 ℃, and drying.

In the dyeing process, the fabric and the first deionized water are mixed according to a bath ratio of 1:10, the fabric and the first deionized water are placed in a high-temperature and high-pressure overflow dyeing machine, mannitol, polyethylene glycol and silk amino acid are added into the first deionized water, the concentration of mannitol is 10g/L, the concentration of polyethylene glycol is 10g/L, the silk amino acid is 10g/L, after the mixture is fully stirred and mixed uniformly, the monochlorotriazine reactive dye is added into the first deionized water, after the mixture is fully stirred and mixed uniformly and kept stand for 10min, 1/3 of anhydrous sodium sulphate is added, after the mixture is fully stirred and mixed uniformly and kept stand for 10min, 2/3 of anhydrous sodium sulphate is added, after the mixture is fully stirred and mixed uniformly, the total concentration of anhydrous sodium sulphate is 15g/L, 1/3 of soda is added, after the mixture is fully stirred and mixed uniformly and kept warm for 10min, 1/3 of soda is added, after the mixture is fully stirred and mixed uniformly, the total concentration of soda is kept warm for 3g/L, and kept warm for 40min, and the mixture is washed, and dried.

In the softening and shaping process, firstly, putting the fabric into a softening agent containing 40g/L for dipping, and then, feeding the fabric into a shaping machine, wherein the temperature of a heating zone of the shaping machine is 150 ℃, and the speed of the shaping machine is 40 m/mm.

In the calendaring and preshrinking, the conventional calendaring and preshrinking process conditions in the textile field are adopted, so that all indexes of the fabric are ensured to be qualified.

Example 2

In the flame port singeing process, the fabric is conveyed into a gas singeing machine, the flame port positions adopt a double-positive double-negative singeing mode, the speed of the gas singeing machine is 90 m/mm, and the flame port temperature is 1100 ℃.

In the bleaching process, firstly, placing the fabric in a jig dyeing machine, adding third deionized water into the jig dyeing machine, mixing the fabric and the third deionized water according to a bath ratio of 1:8, sequentially adding a refining agent, hydrogen peroxide and sodium carbonate into the third deionized water, wherein the concentration of the refining agent is 2g/L, the concentration of the hydrogen peroxide is 3g/L, the concentration of the sodium carbonate is 2g/L, fully stirring, heating to 90 ℃, preserving heat for 100min, taking out the fabric, washing under 90 ℃ clear water, and drying.

In the dyeing process, the fabric and the first deionized water are mixed according to a bath ratio of 1:8, the fabric and the first deionized water are placed in a high-temperature and high-pressure overflow dyeing machine, mannitol, polyethylene glycol and silk amino acid are added into the first deionized water, the concentration of the mannitol is 5g/L, the concentration of the polyethylene glycol is 5g/L, the concentration of the silk amino acid is 5g/L, the mixture is fully stirred and mixed uniformly, then the monochlorotriazine reactive dye is added into the first deionized water, the mixture is fully stirred and mixed uniformly and kept stand for 10min, then 1/3 preset anhydrous sodium sulphate is added, the mixture is fully stirred and mixed uniformly and kept stand for 10min, then 2/3 preset anhydrous sodium sulphate is added, the mixture is fully stirred and mixed uniformly, the temperature is raised to 50 ℃, the total concentration of the anhydrous sodium sulphate is 15g/L, 1/3 preset soda is added, the mixture is fully stirred and mixed uniformly and kept warm for 10min, then 1/3 preset soda is added, the mixture is fully stirred and mixed uniformly and kept warm for 3 g/3 min, and the total concentration of soda is kept warm for 40min, and the mixture is washed, and dried.

In the softening and shaping process, firstly, putting the fabric into a softening agent containing 30g/L for dipping, and then, feeding the fabric into a shaping machine, wherein the temperature of a heating area of the shaping machine is 140 ℃, and the speed of the shaping machine is 30 m/mm.

Example 3

In the flame port singeing process, the fabric is conveyed into a gas singeing machine, the flame port positions adopt a double-positive double-negative singeing mode, the speed of the gas singeing machine is 110 m/mm, and the flame port temperature is 1300 ℃.

In the bleaching process, firstly, placing the fabric in a jig dyeing machine, adding third deionized water into the jig dyeing machine, mixing the fabric and the third deionized water according to a bath ratio of 1:12, sequentially adding a refining agent, hydrogen peroxide and sodium carbonate into the third deionized water, wherein the concentration of the refining agent is 4g/L, the concentration of the hydrogen peroxide is 5g/L, the concentration of the sodium carbonate is 4g/L, fully stirring, heating to 100 ℃, preserving heat for 100min, taking out the fabric, washing under 100 ℃ clear water, and drying.

In the dyeing process, the fabric and the first deionized water are mixed according to a bath ratio of 1:12, the fabric and the first deionized water are placed in a high-temperature and high-pressure overflow dyeing machine, mannitol, polyethylene glycol and silk amino acid are added into the first deionized water, the concentration of the mannitol is 15g/L, the concentration of the polyethylene glycol is 15g/L, the concentration of the silk amino acid is 15g/L, the fabric and the first deionized water are fully stirred and mixed uniformly, then the monochlorotriazine reactive dye is added into the first deionized water, the fabric and the first deionized water are fully stirred and mixed uniformly and stand for 10min, then 1/3 of anhydrous sodium sulphate is added, the anhydrous sodium sulphate is fully stirred and mixed uniformly and stand for 10min, then 2/3 of anhydrous sodium sulphate is added, the temperature is raised to 50 ℃ after the full stirring and mixing, the total concentration of the anhydrous sodium sulphate is 15g/L, 1/3 of soda is added, the soda is fully stirred and mixed uniformly and kept at 10min, the soda is fully stirred and mixed uniformly and kept at 1/3 of soda is added, the soda is fully stirred and mixed uniformly and kept at the temperature for 3 g/3 of soda is kept at the total concentration of the soda is kept at 40min, and the pure water is washed and kept at the temperature for 40 min.

In the softening and shaping process, firstly, putting the fabric into a softening agent containing 50g/L for dipping, and then, feeding the fabric into a shaping machine, wherein the temperature of a heating area of the shaping machine is 160 ℃, and the speed of the shaping machine is 50 m/mm.

Example 4

This example differs from example 1 in that a vinyl sulfone type reactive dye is used.

Example 5

This example differs from example 1 in that a double-reactive-group type reactive dye is used.

Example 6

The difference between the embodiment and the embodiment 1 is that a soft washing process is provided after the dyeing process and before the soft shaping process, in the soft washing process, firstly, the fabric and the second deionized water are mixed according to a bath ratio of 1:10, citric acid is added into the second deionized water, the mixture is fully stirred, the pH value of the second deionized water is adjusted to 6.0-6.5, the temperature is raised to 55 ℃, enzyme water is added into the second deionized water, the mixture is fully stirred and mixed, the mass percent of the enzyme water is 1%, after the heat preservation is carried out for 50min, the fabric is taken out, and the fabric is washed by clean water and dried.

Example 7

The difference between the embodiment and the embodiment 1 is that a soft washing process is provided after the dyeing process and before the soft shaping process, in the soft washing process, firstly, the fabric and the second deionized water are mixed according to a bath ratio of 1:8, citric acid is added into the second deionized water, the mixture is fully stirred, the pH value of the second deionized water is adjusted to 6.0-6.5, the temperature is raised to 50 ℃, enzyme water is added into the second deionized water, the mixture is fully stirred and mixed, the mass percent of the enzyme water is 0.5%, after the heat preservation is carried out for 40min, the fabric is taken out, and the fabric is washed by clean water and dried.

Example 8

The difference between the embodiment and the embodiment 1 is that a soft washing process is provided after the dyeing process and before the soft shaping process, in the soft washing process, firstly, the fabric and the second deionized water are mixed according to a bath ratio of 1:12, citric acid is added into the second deionized water, the mixture is fully stirred, the pH value of the second deionized water is adjusted to 6.0-6.5, the temperature is raised to 60 ℃, enzyme water is added into the second deionized water, the mixture is fully stirred and mixed, the mass percent of the enzyme water is 1.5%, and after the heat preservation is carried out for 60min, the fabric is taken out, washed by clear water and dried.

Example 9

The difference between this example and example 6 is that a beating process is provided after the dyeing process and before the soft washing process, in which the fabric is fed into an air beater, the temperature of which is 50 ℃, the speed of which is 30m/min, and the flow rate of the air beater's up and down air blows is set to 60%.

Example 10

The difference between this example and example 6 is that a beating process is provided after the dyeing process and before the soft washing process, in which the fabric is fed into an air beater, the temperature of which is 45 ℃, the speed of which is 25m/min, and the flow rate of the air beater's up and down air blows is set to 50%.

Example 11

The difference between this example and example 6 is that a beating process is provided after the dyeing process and before the soft washing process, in which the fabric is fed into an air beater, the temperature of which is 55 ℃, the speed of which is 35m/min, and the flow rate of the air beater's up and down air blows is set to 70%.

Comparative example 1

This comparative example differs from example 1 in that no polyethylene glycol was added in the dyeing process.

Comparative example 2

This comparative example differs from example 1 in that mannitol was not added in the dyeing process.

Comparative example 3

The difference between this comparative example and example 1 is that no silk amino acid was added in the dyeing process.

Comparative example 4

This comparative example differs from example 1 in that no polyethylene glycol, mannitol and silk amino acid were added.

The lyocell-containing fabrics treated by the dyeing and finishing methods of examples 1 to 11 and comparative examples 1 to 4 were tested for breaking strength, fuzzing and pilling resistance, and color depth (K/S) values using the following criteria, and the test results are shown in table 1.

Breaking Strength referring to Standard GB/T7742.1-2005, the weft breaking strength of the fabric was tested by YG (B) 026HC-250 electronic fabric strength machine.

Anti-pilling-the anti-pilling of fabrics was tested by means of a YG401N fabric flat grinder with reference to standard GB/T4802.1-2008.

Color depth (K/S) value measurement the apparent Color depth K/S value was measured with a Color i7 Color measuring and matching instrument under a 10℃standard observer and a D65 light source, and each sample was measured at 5 points and the results were averaged. The higher the K/S value is used as an index for measuring the color depth, the higher the color depth of the fabric is represented.

TABLE 1 Performance data for fabrics prepared by the dyeing and finishing processes of examples 1-5 and comparative examples 1-6

As can be seen from the comparative analysis of the example 1 and the comparative examples 1 to 4, in the dyeing process of the example 1, the polyethylene glycol, the mannitol and the silk amino acid are added to promote the efficient adsorption and diffusion of the reactive dye on the surface of the fiber together through the synergistic effect of the polyethylene glycol, the mannitol and the silk amino acid, increase the dye adhesion quantity on the surface of the fiber, effectively reduce the fiber gaps, realize the dyeing promotion effect, reduce the fiber splitting risk, improve the bonding strength between the reactive dye and the fiber, and improve the anti-pilling performance of the fabric, so that the fabric of the example 1 shows better breaking strength, anti-pilling and dyeing performance.

As can be seen from the comparative analysis of examples 1 and examples 6 to 8, examples 6 to 8 have one more soft washing step, and the breaking strength and the perfoliate pilling performance of the fabric after dyeing and finishing treatment of example 1 are slightly improved. This is because enzyme water is added in the soft washing step, and the enzyme water is used as one of the bio-based materials, so that the micro fibers in disorder on the surface of the fabric can be selectively concentrated and hydrolyzed, and the fiber trunk is not damaged. Meanwhile, the bioactive components such as moisture preservation, antioxidation and the like contained in the ferment water can also help to reduce the strong damage to the fiber. Meanwhile, after the soft washing process is added, the dyeing and finishing rate of the fabric is slightly increased, and the floating color on the surface of the fabric is effectively removed in the soft washing process, so that the color of the fabric is clearer and purer, and the fabric is not easy to fade after washing.

As is clear from the comparative analysis of examples 6 and examples 9 to 11, examples 9 to 11 have one more beating step, and the breaking strength of the fabric after dyeing and finishing treatment is reduced compared with that of example 6, but the fuzzing and pilling performance is improved. This is because the beating process can convert the fine wool adsorbed on the lubricating layer on the surface of the fiber from an attached state to a loose and free form, and lays a solid foundation for the subsequent soft washing process. Meanwhile, after the beating process is added, the dye which is not strongly adsorbed on the surface of the fabric can be beaten off, but because polyethylene glycol, mannitol and silk amino acid are added in the dyeing process, the synergistic effect of the polyethylene glycol, the mannitol and the silk amino acid is added, the binding force between the dye and the fiber is enhanced, the dye can be firmly attached to the fiber, the color depth of the fabric can not be reduced too much even if the fabric is subjected to the beating process, and the fabric can still maintain higher color stability and depth.

In summary, the application provides a dyeing and finishing method for a fabric containing lyocell, in the dyeing and finishing method, mannitol, polyethylene glycol and silk amino acid are added into a dyeing liquid before dyeing, the silk amino acid is promoted to be dyed, mannitol is lubricated and fiber is inhibited, the polyethylene glycol is stable and synergistic, the three synergistic effects are synergistic, the efficient adsorption and diffusion of dye on the surface of the fiber are promoted, the dye attachment quantity is increased, the fiber gaps are reduced, the dyeing promoting effect is realized, the fiber splitting risk is effectively reduced, and the fibrillation problem of the lyocell fiber in the dyeing process is solved.

Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments may be combined in any suitable manner to form other embodiments that will be apparent to those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present application, and they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the spirit of the present application should be included in the scope of the present application.

Claims

1. A dyeing and finishing method for a lyocell fiber-containing fabric, characterized in that it comprises the following steps: subjecting the lyocell fiber-containing fabric to the following steps in sequence: singeing, enzyme treatment, bleaching, dyeing, softening and shaping, calendering and pre-shrinking;

In the dyeing process, the fabric is first mixed with the first deionized water at a bath ratio of 1:8 to 1:12, mannitol, polyethylene glycol and silk amino acid are first added to the first deionized water, and the mixture is fully stirred and evenly mixed, and then a reactive dye is added to the first deionized water, and the mixture is fully stirred and evenly mixed and left to stand for 10 minutes, and then 1/3 of a preset amount of anhydrous sodium sulfate is added, and the mixture is fully stirred and evenly mixed and left to stand for 10 minutes, and then 2/3 of a preset amount of anhydrous sodium sulfate is added, and the mixture is fully stirred and evenly mixed, and then the temperature is raised to 50° C., 1/3 of a preset amount of soda ash is added, and the mixture is fully stirred and evenly mixed and kept warm for 10 minutes, and then 1/3 of a preset amount of soda ash is added, and the mixture is fully stirred and evenly mixed and kept warm for 10 minutes, and then 1/3 of a preset amount of soda ash is added, and the mixture is fully stirred and evenly mixed, and after keeping warm for a preset time, the mixture is washed with clean water and dried.

2. The dyeing and finishing method of lyocell fiber fabric according to claim 1, characterized in that the concentration of mannitol is 5g/L to 15g/L, the concentration of polyethylene glycol is 5g/L to 15g/L, and the concentration of silk amino acid is 5g/L to 15g/L.

3. The dyeing and finishing method of a lyocell fiber-containing fabric according to claim 2 is characterized in that a soft washing process is further included after the dyeing process and before the softening and setting process, in which: the fabric is first mixed with a second deionized water at a bath ratio of 1:8 to 1:12, citric acid is added to the second deionized water, and the mixture is fully stirred to adjust the pH value of the second deionized water to 6.0 to 6.5, and the temperature is raised to 50°C to 60°C, and enzyme water is added to the second deionized water, and the mixture is fully stirred to make the mass percentage of the enzyme water 0.5% to 1.5%, and after keeping the temperature for 40 to 60 minutes, the fabric is taken out, washed with clean water, and dried.

4. The dyeing and finishing method of lyocell fiber-containing fabric according to claim 3 is characterized in that, after the soft washing process and before the soft shaping process, a beating process is also included, in which: the fabric is conveyed into an air beating machine, the temperature of the air beating machine is 45°C to 55°C, the speed of the air beating machine is 25m/min to 35m/min, and the flow rate of the upper and lower blowing of the air beating machine is set to 50% to 70%.

5. The dyeing and finishing method of lyocell fiber fabric according to claim 1 is characterized in that the burner singeing adopts a two-front and one-back or two-front and two-back singeing method, the speed of the gas singeing machine used in the burner singeing process is 90m/mim~110m/mim, and the burner temperature of the burner singeing is 1100℃~1300℃.

6. The dyeing and finishing method of a lyocell fiber-containing fabric according to claim 1, characterized in that, in the bleaching process: firstly, the fabric is mixed with a third deionized water at a bath ratio of 1:8 to 1:12, and a refining agent, hydrogen peroxide and soda ash are sequentially added to the third deionized water, and the mixture is stirred sufficiently, wherein the concentration of the refining agent is 2 g/L to 4 g/L, the concentration of the hydrogen peroxide is 3 g/L to 5 g/L, and the concentration of the soda ash is 2 g/L to 4 g/L, the temperature is raised to 90°C to 100°C, and the temperature is kept for 80 to 100 minutes, and the fabric is taken out, washed in clean water at 90°C to 100°C, and dried.

7. The dyeing and finishing method of lyocell fiber fabric according to claim 1 is characterized in that in the softening and setting process: the fabric is first immersed in a softener containing 30g/L to 50g/L, and then the fabric is sent to a setting machine, the temperature of the heating zone of the setting machine is 140°C to 160°C, and the speed of the setting machine is 30m/mim to 50m/mim.

8. The dyeing and finishing method of lyocell fiber-containing fabric according to claim 1, characterized in that the dyeing machine used in the dyeing process is a high-temperature and high-pressure overflow dyeing machine.

9. The dyeing and finishing method of lyocell fiber-containing fabric according to claim 1, characterized in that the reactive dye is any one of a bi-reactive base type reactive dye, a monochloro-s-triazine type reactive dye, and a vinyl sulfone type reactive dye.