Method for improving dyeing levelness of staple fiber blended triacetate cellulose fiber

Abstract

The invention discloses a dyeing and leveling improvement method for a short-fiber blended triacetyl cellulose fiber, and belongs to the technical field of textile yarn dyeing. The technical scheme includes the screening and spinning of raw materials, the screening, dyeing and soaping of dyes; the screening and spinning of raw materials: the raw materials adopt cellulose acetate and short fibers; the screening of dyes: the screening of dyes with high color fastness and high strength; the optimization of dyeing process: degreasing first and then dyeing, controlling the dyeing temperature and time, and adding dyeing auxiliaries during the dyeing process; the optimization of soaping fastness: the light-colored varieties adopt low-temperature soaping, controlling the soaping temperature to 60-70°C, the soaping time to 10-15min, and selecting a low-temperature soaping agent. The present invention embodies the advantages of triacetyl cellulose fiber and Tencel fiber to the greatest extent, solves the problem of uneven dyeing in the blending of cellulose acetate fiber and Tencel, and gives full play to the performance advantages of both.

Description

Technical Field

[0001] The invention belongs to the technical field of textile yarn dyeing, and particularly relates to a method for improving the dyeing levelness of short-fiber blended triacetate cellulose fibers. Background Art

[0002] Cellulose acetate fiber, as a polymer material with wood pulp as the starting material, is converted into a cellulose ester derivative by acetylation of the hydroxyl groups in its cellulose molecules, and then produced by dry spinning technology. This type of fiber is deeply favored by current consumers for its unique soft luster, silk-like appearance, excellent moisture absorption and quick-drying performance, skin-friendly and comfortable use experience, and convenient care characteristics. However, cellulose acetate fiber also has several inherent defects, such as relatively low fiber strength and not resistant to high temperature treatment. Although the boiling water shrinkage rate is low, treatment in a high temperature environment will significantly affect its key performance indicators such as strength and gloss. In addition, cellulose acetate fiber faces great challenges in the printing and dyeing process, which are manifested in significant coloring limitations, low color efficiency, and easy creases on the fabric surface. These problems limit its application in the field of high-end textiles.

[0003] On the other hand, as a regenerated cellulose fiber with excellent performance, Tencel occupies an important position in the textile industry due to its recognized wearing comfort, excellent moisture absorption and breathability, as well as similarity with triacetate in softness and drape. Tencel fiber not only has excellent dyeing performance and can present bright colors, but its disadvantage is poor stiffness, which happens to complement the performance of triacetate, providing the possibility of developing new blended materials, broadening the scope of application and showing broad market prospects.

[0004] In view of this, blending cellulose acetate fiber with high-quality regenerated cellulose fibers such as Tencel is intended to combine the advantages of both and create new textile materials with higher added value. However, in this process, weaving and dyeing and finishing still face a series of common key technical problems, especially the problem of uneven dyeing, which has become a key factor restricting the improvement of product quality and the enhancement of market competitiveness. Therefore, the development of new technologies that can effectively solve the problem of dyeing uniformity of blended fibers has become a hot topic and urgent need in current industry research. Summary of the invention

[0005] The present invention provides a method for improving the dyeing levelness of short-staple blended triacetyl cellulose fiber, which maximizes the advantages of triacetyl cellulose fiber and Tencel fiber, solves the problem of uneven dyeing in the blending of cellulose acetate fiber and Tencel, and fully exerts the performance advantages of both and broadens the scope of application.

[0006] The technical solution of the present invention is:

[0007] A method for improving the dyeing and leveling of short-staple blended triacetate cellulose fibers, including the selection and spinning of raw materials, the selection of dyes, dyeing and soaping;

[0008] Raw material selection and spinning: The raw materials are acetate fiber and staple fiber. The original yarn twist of acetate fiber and staple fiber yarn is 25-29T / IN, and the strength is 133.9-286CN. The carding process adopts a mixed mixing method, flexible carding, and three-way drawing for production. The short fiber rate of raw sliver is controlled to be 8-10%, and the basis weight is 18-19g / 5m; the basis weight of cooked sliver is 14-15g / 5m, and the dryness of cooked sliver is 2.5-3%;

[0009] Dye screening: Screen dyes with high color fastness, high strength and high color shade, with strength greater than or equal to 105% and color fastness greater than or equal to level 4 at 60°C;

[0010] Optimization of dyeing process: degreasing first and then dyeing, the dyeing temperature of light-colored fabrics is 100℃, the time is 40min, the dyeing temperature of dark-colored fabrics is 125℃, the time is 40min, and dyeing auxiliaries are added during the dyeing process;

[0011] Optimization of soap fastness: When dyeing light-colored varieties, use low-temperature soap washing, control the soap washing temperature to 60-70℃, and the soap washing time to 10-15min; when dyeing dark-colored varieties, on the basis of low-temperature soap washing, add high-temperature soap washing, and the high-temperature soap washing temperature is 98℃ and maintained for 15min.

[0012] Preferably, the acetate fiber is triacetate cellulose fiber, the staple fiber is tencel fiber, and the blending ratio of triacetate cellulose fiber to tencel fiber is 7:3.

[0013] Preferably, the mixing is performed by opening and mixing with a fiber disc twice, and the speeds during the flexible carding process are: cylinder speed 300-330r / min, licker-in roller speed 580-650r / min, and cover plate 0.13-0.16m / min.

[0014] Preferably, the dark variety is black, and the light variety is light green or light orange.

[0015] Preferably, the dyes selected for light-colored fabric dyes are Sumitomo Disperse Blue-B SE-RPD, Sumitomo Disperse Red-RSE-RPD, Sumitomo Disperse Yellow-YACE, Reactive Blue-B BRF, Reactive Red-R 3BF and Reactive Yellow-Y 3RF; the dyes selected for dark-colored fabric dyes are Reactive Black-SRFD, Reactive Red-K-3BS, Reactive Yellow-K-3RS, Disperse Navy-S-WF, Disperse Ruby-S-WF and Disperse Golden Yellow-SWF.

[0016] Preferably, the concentration of soda ash used is 5-15 g / L, the concentration of oil remover used is 0.5-1.5 g / L, the treatment temperature is 80-130° C., and the treatment time is 5-20 min.

[0017] Preferably, the dyeing auxiliary agent is carrier TP or carrier TF, and the added concentration of carrier TP and carrier TF is 4%.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The short-staple blended triacetate cellulose fiber fabric of the present invention has significant advantages over piece-dyed fabrics in terms of color, texture, durability and environmental protection; the color is directly integrated into the yarn during the weaving process, and the color is brighter and fuller, with a strong visual impact. The close combination of color and fiber also makes the color-woven fabric less likely to fade during washing, and has higher color fastness.

[0020] 2. The dyeing and leveling improvement method of the short-staple blended triacetate cellulose fiber of the present invention can select the matching and interweaving of different materials, and this three-dimensional sense enhances the visual effect of the fabric.

[0021] 3. The short-staple blended cellulose triacetate fiber fabric of the present invention has the advantages of high color fastness, soft and refreshing drape, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a dyeing effect diagram of the short-staple blended triacetate cellulose fiber finished product of Example 1 of the present invention.

[0023] Figure 2 This is a dyeing effect diagram of the short-staple blended triacetate cellulose fiber finished product of Example 2 of the present invention.

[0024] Figure 3 This is a dyeing effect diagram of the short-staple blended triacetate cellulose fiber finished product of Example 3 of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Refining agent-SA-E was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0027] Oil removal agent-TF-101N was purchased from Zhejiang Chuanhua Chemical Group Co., Ltd.;

[0028] Leveling agent-LA-R was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0029] The fixing agent FA-R was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0030] Neutralizing acid-AB 02 was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0031] Dispersing and leveling agent-DL-PL was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0032] Sumitomo Disperse Blue-B SE-RPD was purchased from Sumitomo Chemical Co., Ltd., Japan;

[0033] Sumitomo Disperse Red-R SE-RPD was purchased from Sumitomo Chemical Co., Ltd., Japan;

[0034] Sumitomo Dispersed Yellow-YACE was purchased from Sumitomo Chemical Co., Ltd. of Japan;

[0035] Sumitomo Active Blue-B BRF was purchased from Sumitomo Chemical Co., Ltd., Japan;

[0036] Sumitomo Reactive Red-R3BF was purchased from Sumitomo Chemical Co., Ltd., Japan;

[0037] Sumitomo Reactive Yellow-Y 3RF was purchased from Sumitomo Chemical Co., Ltd., Japan;

[0038] Dispersed navy blue-S-WF was purchased from Archroma Chemicals Ltd.;

[0039] Dispersed Ruby-S-WF was purchased from Archroma Chemicals Ltd.;

[0040] Dispersed golden yellow-SWF was purchased from Archroma Chemicals Ltd.;

[0041] Reactive black-SRFD was purchased from Kyungin Trading Co., Ltd., South Korea;

[0042] Reactive Red-K-3BS was purchased from Kyungin Trading Co., Ltd., South Korea;

[0043] Reactive Yellow-K-3RS was purchased from Kyungin Trading Co., Ltd., South Korea;

[0044] Soaping agent-WOLR was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0045] Textile acid-P65 was purchased from Jiangsu Meide Chemical Co., Ltd.;

[0046] Smoothing agent-LUA was purchased from Zibo Lurui Fine Chemical Co., Ltd.;

[0047] The carrier TP was purchased from Tona Chemicals;

[0048] Carrier TF purchased Autobiography Group Co., Ltd.

[0049] Example 1

[0050] This embodiment provides a method for improving the dyeing levelness of short-staple blended triacetate cellulose fiber, which is dyed light green, specifically:

[0051] Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:3. The twist of the original triacetate cellulose fiber yarn is 25T / IN and the strength is 133.9CN. The twist of the original tencel fiber yarn is 25T / IN and the strength is 133.9CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 8%, and the quantitative is 19g / 5m; the quantitative of the cooked sliver is 14g / 5m, and the dryness of the cooked sliver is 2.5%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 300r / min, the licker-in roller speed is 580r / min, and the cover plate is 0.13m / min.

[0052] Dye screening: Sumitomo Disperse Blue-B SE-RPD, Sumitomo Disperse Red-R SE-RPD, Sumitomo Disperse Yellow-YACE, Reactive Blue-B BRF, Reactive Red-R3BF, Reactive Yellow-Y 3RF are selected. The strength value of the dye is 105%, and the color fastness at 60℃ is 4 grade;

[0053] Dyeing process:

[0054] Dyeing triacetate cellulose fiber: degrease first and then dye. Add scouring agent and degreasing agent into the large auxiliary tank according to the bath ratio of 1:11.3; control the temperature at 98℃, the process is 15 minutes, then wash with water at room temperature for 10 minutes, drain and then wash again with water for 5 minutes. Among them, the dosage of scouring agent SA-E is 1g / L, the dosage of degreasing agent TF-101N is 1g / L; the dosage of leveling agent LA-R is 2g / L; add dyeing auxiliary carrier TP, the added mass concentration is 4%;

[0055] Add 1.5 g / L of neutralizing acid-AB 02, stir for 5 minutes, linearly add 0.35 g / L of dispersing and leveling agent DL-PL, 0.00013 owf of Sumitomo Disperse Blue-B SE-RPD, 0.000077 owf of Sumitomo Disperse Red-R SE-RPD and 0.00012 owf of Sumitomo Disperse Yellow-YACE within 10 minutes, stir for 5 minutes, heat to 100°C at a rate of 1°C / min, run for 40 minutes, drain, wash with water at 60°C for 10 minutes, and drain;

[0056] Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive blue-B BRF at a dosage of 0.00022owf, reactive red-R3BF at a dosage of 0.00021owf, and reactive yellow-Y 3RF at a dosage of 0.0042owf, for 10min: heat to 60℃ at a rate of 1℃ / min and run for 10min.

[0057] Linearly add 10g / L sodium sulfate for 10min and circulate in the cylinder for 20min;

[0058] Soda ash 10g / L was added linearly for 30min, and the cylinder was circulated for 40min before drainage;

[0059] Wash with water at 60℃ for 5min and then drain;

[0060] Soaping: Add soaping agent WOLR at a dosage of 1g / L, heat to 60℃ and keep for 15min, then wash at 80℃ for 10min and drain, then wash at room temperature for 5min. Add textile acid and smoothing agent within 3min: heat to 55℃, keep for 21min and drain; the dosage of textile acid-P65 is 0.6g / L, and the dosage of smoothing agent-LUA is 0.03owf.

[0061] The dyeing effect of the short-fiber blended triacetate cellulose fiber obtained in this embodiment is shown in the figure below. Figure 1 shown.

[0062] The short-staple blended triacetate cellulose fiber obtained in this example was tested for fastness, and the fastness was grade 4. The fastness test was conducted using the AATCC 61-2013e2 multi-fiber adjacent lining staining fastness test.

[0063] Example 2

[0064] This embodiment provides a method for improving the dyeing levelness of short-staple blended cellulose triacetate fibers, dyeing them black, specifically:

[0065] Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:3. The twist of the original triacetate cellulose fiber yarn is 29T / IN and the strength is 286CN. The twist of the original tencel fiber yarn is 29T / IN and the strength is 286CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 10%, and the basis weight is 18g / 5m; the basis weight of the cooked sliver is 15g / 5m, and the dryness of the cooked sliver is 3%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 330r / min, the licker-in roller speed is 650r / min, and the cover plate is 0.16m / min.

[0066] Screening of dyes: Reactive black-SRFD, reactive red-K-3BS and reactive yellow-K-3RS were selected in a dosage of 0.018owf. The strength values ​​of the dyes were 200%, 150% and 150% respectively, and the color fastness at 60℃ was all level 4; the strength values ​​of dispersed navy-S-WF, dispersed ruby-S-WF and dispersed golden yellow-SWF were 140%, 132% and 135% respectively, and the color fastness at 60℃ was all level 4.

[0067] Dyeing process:

[0068] Dyeing triacetate cellulose fiber: degrease first and then dye. Add scouring agent and degreasing agent into the large auxiliary tank according to the bath ratio of 1:11.3; control the temperature at 80℃, the process is 20 minutes, then wash with water at room temperature for 10 minutes, drain and then wash again with water for 5 minutes. Among them, the dosage of scouring agent SA-E is 1g / L, the dosage of degreasing agent TF-101N is 0.5g / L; the dosage of leveling agent LA-R is 2g / L; add dyeing auxiliary carrier TP, the added mass concentration is 4%;

[0069] The temperature was controlled at 60°C, and 2 g / L of textile acid-P65 was added. The mixture was stirred for 5 min, and dyes were added linearly within 10 min. The amount of dispersed navy-S-WF was 0.01 owf, the amount of dispersed ruby-S-WF was 0.0015 owf, and the amount of dispersed golden yellow-SWF was 0.002 owf. The mixture was stirred for 5 min, and the temperature was raised to 80°C, and then raised to 125°C at a rate of 1°C / min. The mixture was run for 40 min and then exhausted.

[0070] Low temperature soaping: Add soaping agent-WOLR at a dosage of 5g / L, raise the temperature to 80℃ and maintain for 20min, drain, and repeat twice.

[0071] Linearly add 0.05g / L of color fixing agent FA-R, heat to 60℃ at a rate of 1℃ / min, run for 10min, then add 100g / L of sodium sulfate within 10min, run for 20min, then add 30g / L of soda ash within 30min, run for 40min and drain. Wash with 60℃ water for 5min and drain.

[0072] High temperature soaping: add soaping agent-WOLR at a dosage of 5g / L, heat to 98℃ and keep for 15min, drain, repeat twice. Then wash with 80℃ water for 10min and drain, then wash with room temperature water for 5min.

[0073] Then add textile acid and smoothing agent at room temperature: heat to 55℃, keep for 21 minutes and then drain. The amount of textile acid-P65 is 0.6g / L, and the amount of smoothing agent-LUA is 0.03owf.

[0074] Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive black-SRFD at a dosage of 0.08owf, reactive red-K-3BS at a dosage of 0.01owf, reactive yellow-K-3RS at a dosage of 0.018owf, and continue for 10min: heat up to 60℃ at a rate of 1℃ / min and run for 10min.

[0075] Linear addition of sodium sulfate at a dosage of 80 g / L for 10 min, and circulation in the cylinder for 20 min:

[0076] Soda ash was added linearly at a dosage of 25 g / L for 30 min, and the cylinder was circulated for 40 min before drainage;

[0077] Wash with water at 60℃ for 5 minutes and then drain.

[0078] The dyeing effect of the short-fiber blended triacetate cellulose fiber obtained in this embodiment is shown in the figure below. Figure 2 shown.

[0079] The short-staple blended triacetate cellulose fiber obtained in this example was tested for fastness, and the fastness was grade 4. The fastness test was conducted using the AATCC 61-2013e2 multi-fiber adjacent lining staining fastness test.

[0080] Example 3

[0081] This embodiment provides a method for improving the dyeing levelness of short-staple blended triacetate cellulose fiber, which is dyed light orange, specifically:

[0082] Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:3. The twist of the original triacetate cellulose fiber yarn is 26T / IN and the strength is 200CN. The twist of the original tencel fiber yarn is 26T / IN and the strength is 200CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 9%, and the quantitative is 18.5g / 5m; the quantitative of the cooked sliver is 14.5g / 5m, and the dryness of the cooked sliver is 2.8%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 320r / min, the licker-in roller speed is 600r / min, and the cover plate is 0.15m / min.

[0083] Dye selection: Sumitomo Disperse Blue-B SE-RPD, Sumitomo Disperse Red-R SE-RPD, Sumitomo Disperse Yellow-YACE, Reactive Blue-B BRF, Reactive Red-R3BF, Reactive Yellow-Y 3RF are selected. The strength value of the dye is 112%, and the color fastness at 60℃ is 4 grade;

[0084] Dyeing process:

[0085] According to the bath ratio of 1:11.3, add scouring agent and degreasing agent into the large auxiliary tank; control the temperature at 130℃ for 5 minutes, then wash with water at room temperature for 10 minutes, drain and then wash again for 5 minutes. Among them, the amount of scouring agent-SA-E is 1g / L, the content of degreasing agent-TF-101N is 1.5g / L; the amount of leveling agent-LA-R is 2g / L; add dyeing auxiliary carrier TF, the added mass concentration is 4%;

[0086] Dyeing triacetate cellulose fiber: add neutralizing acid-AB 02 in an amount of 1.5g / L and stir for 5min, then linearly add dispersing leveling agent-DL-PL in an amount of 0.35g / L within 10min, Sumitomo Disperse Blue-B SE-RPD in an amount of 0.00013owf, Sumitomo Disperse Red-R SE-RPD in an amount of 0.000077owf, Sumitomo Disperse Yellow-YACE in an amount of 0.00012owf, then stir for 5min, heat to 100℃ at a rate of 1℃ / min, run for 40min and drain, wash at 60℃ for 10min and drain;

[0087] Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive blue-B BRF at a dosage of 0.00022owf, reactive red-R 3BF at a dosage of 0.00021owf, and reactive yellow-Y 3RF at a dosage of 0.0042owf, for 10min: heat up to 60℃ at a rate of 1℃ / min, and run for 10min;

[0088] Linearly add 10g / L sodium sulfate for 10 minutes and circulate in the cylinder for 20 minutes:

[0089] Soda ash 10g / L was added linearly for 30min, and the cylinder was circulated for 40min before drainage;

[0090] Wash with water at 60℃ for 5min and then drain;

[0091] Soaping: Add 1g / L of soaping agent-WOLR, heat to 60℃ and keep for 15min, then wash at 80℃ for 10min, drain, and then wash at room temperature for 5min. Add textile acid and smoothing agent within 3min: heat to 55℃, keep for 21min and then drain. The amount of textile acid-P65 is 0.6g / L, and the amount of smoothing agent-LUA is 0.03owf.

[0092] The dyeing effect of the short-fiber blended triacetate cellulose fiber obtained in this embodiment is shown in the figure below. Figure 3 shown.

[0093] The short-staple blended triacetate cellulose fiber obtained in this example was tested for fastness, and the fastness was grade 4. The fastness test was conducted using the AATCC 61-2013e2 multi-fiber adjacent lining staining fastness test.

Claims

1. A method for improving the dyeing levelness of short-staple blended triacetate cellulose fiber, characterized in that: Dyed in light green, specifically: Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:

3. The twist of the original triacetate cellulose fiber yarn is 25T / IN and the strength is 133.9CN. The twist of the original tencel fiber yarn is 25T / IN and the strength is 133.9CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 8%, and the quantitative is 19g / 5m; the quantitative of the cooked sliver is 14g / 5m, and the dryness of the cooked sliver is 2.5%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 300r / min, the licker-in roller speed is 580r / min, and the cover plate is 0.13m / min. Dye screening: Sumitomo Disperse Blue-B SE-RPD, Sumitomo Disperse Red-R SE-RPD, Sumitomo Disperse Yellow-YACE, Reactive Blue-B BRF, Reactive Red-R3BF, Reactive Yellow-Y 3RF are selected. The strength value of the dye is 105%, and the color fastness at 60℃ is 4 grade; Dyeing process: Dyeing triacetate cellulose fiber: degrease first and then dye. Add scouring agent and degreasing agent into the large auxiliary tank according to the bath ratio of 1:11.3; control the temperature at 98℃, the process is 15min, then wash with water at room temperature for 10min, drain and then wash again with water for 5min; the dosage of scouring agent SA-E is 1g / L, the dosage of degreasing agent TF-101N is 1g / L; the dosage of leveling agent LA-R is 2g / L; add dyeing auxiliary carrier TP, the added mass concentration is 4%; Add 1.5 g / L of neutralizing acid-AB 02, stir for 5 minutes, linearly add 0.35 g / L of dispersing and leveling agent DL-PL, 0.00013 owf of Sumitomo Disperse Blue-B SE-RPD, 0.000077 owf of Sumitomo Disperse Red-R SE-RPD and 0.00012 owf of Sumitomo Disperse Yellow-YACE within 10 minutes, stir for 5 minutes, heat to 100°C at a rate of 1°C / min, run for 40 minutes, drain, wash with water at 60°C for 10 minutes, and drain; Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive blue-B BRF at a dosage of 0.00022owf, reactive red-R3BF at a dosage of 0.00021owf, and reactive yellow-Y 3RF at a dosage of 0.0042owf, for 10min: heat up to 60℃ at a rate of 1℃ / min, and run for 10min; Linearly add 10g / L sodium sulfate for 10min and circulate in the cylinder for 20min; Soda ash 10g / L was added linearly for 30min, and the cylinder was circulated for 40min before drainage; Wash with water at 60℃ for 5min and then drain; Soap washing: add soaping agent WOLR at a dosage of 1g / L, heat to 60℃ and keep for 15min, then wash with water at 80℃ for 10min and drain, and then wash with water at room temperature for 5min; add textile acid and smoothing agent within 3min: heat to 55℃, keep for 21min and then drain; the dosage of textile acid-P65 is 0.6g / L, and the dosage of smoothing agent-LUA is 0.03owf.

2. A method for improving the dyeing levelness of short-staple blended triacetate cellulose fiber, characterized in that: Dyed black, specifically: Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:

3. The twist of the original triacetate cellulose fiber yarn is 29T / IN and the strength is 286CN. The twist of the original tencel fiber yarn is 29T / IN and the strength is 286CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 10%, and the basis weight is 18g / 5m; the basis weight of the cooked sliver is 15g / 5m, and the dryness of the cooked sliver is 3%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 330r / min, the licker-in roller speed is 650r / min, and the cover plate is 0.16m / min. Dye screening: Reactive black-SRFD, reactive red-K-3BS and reactive yellow-K-3RS were selected with a dosage of 0.018owf, and the strength values ​​of the dyes were 200%, 150%, and 150% respectively, and the color fastness at 60℃ was 4 levels; the strength values ​​of dispersed navy-S-WF, dispersed ruby-S-WF and dispersed golden yellow-SWF were 140%, 132% and 135% respectively, and the color fastness at 60℃ was 4 levels; Dyeing process: Dyeing triacetate cellulose fiber: degrease first and then dye. Add scouring agent and degreasing agent into the large auxiliary tank according to the bath ratio of 1:11.3; control the temperature at 80℃, the process is 20min, then wash with water at room temperature for 10min, drain and then wash again with water for 5min; the dosage of scouring agent SA-E is 1g / L, the dosage of degreasing agent TF-101N is 0.5g / L; the dosage of leveling agent LA-R is 2g / L; add dyeing auxiliary carrier TP, the added mass concentration is 4%; The temperature was controlled at 60°C, and 2 g / L of textile acid-P65 was added. The mixture was stirred for 5 min, and dyes were added linearly within 10 min. The amount of dispersed navy-S-WF was 0.01 owf, the amount of dispersed ruby-S-WF was 0.0015 owf, and the amount of dispersed golden yellow-SWF was 0.002 owf. The mixture was stirred for 5 min, and the temperature was raised to 80°C, and then raised to 125°C at a rate of 1°C / min. The mixture was run for 40 min and then exhausted. Low temperature soaping: add soaping agent-WOLR at a dosage of 5g / L, heat to 80℃ and keep for 20min, drain, and repeat twice; Linearly add 0.05g / L of color fixing agent FA-R, heat to 60℃ at a rate of 1℃ / min, run for 10min, then add 100g / L of sodium sulfate within 10min, run for 20min, then add 30g / L of soda ash within 30min, run for 40min and drain completely; wash with water at 60℃ for 5min and drain completely; High-temperature soaping: add soaping agent-WOLR at a dosage of 5g / L, heat to 98℃ and keep for 15min, drain, repeat twice; then wash with water at 80℃ for 10min to drain, and wash with water at room temperature for 5 minutes to drain; Then add textile acid and smoothing agent at room temperature: heat to 55℃, keep for 21 minutes and then drain; the amount of textile acid-P65 is 0.6g / L, and the amount of smoothing agent-LUA is 0.03owf; Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive black-SRFD at a dosage of 0.08owf, reactive red-K-3BS at a dosage of 0.01owf, and reactive yellow-K-3RS at a dosage of 0.018owf, for 10min: heat up to 60℃ at a rate of 1℃ / min, and run for 10min; Linear addition of sodium sulfate at a dosage of 80 g / L for 10 min, and circulation in the cylinder for 20 min: Soda ash was added linearly at a dosage of 25 g / L for 30 min, and the cylinder was circulated for 40 min before drainage; Wash with water at 60℃ for 5 minutes and then drain.

3. A method for improving the dyeing levelness of short-staple blended triacetate cellulose fiber, characterized in that: Dyed in light orange, specifically: Raw material screening and spinning: The raw materials are triacetate cellulose fiber and tencel fiber with a blending ratio of 7:

3. The twist of the original triacetate cellulose fiber yarn is 26T / IN and the strength is 200CN. The twist of the original tencel fiber yarn is 26T / IN and the strength is 200CN. The carding process adopts a mixed method of package mixing, flexible carding, and three-pass drawing for production. The short fiber rate of the raw sliver is controlled to be 9%, and the quantitative is 18.5g / 5m; the quantitative of the cooked sliver is 14.5g / 5m, and the dryness of the cooked sliver is 2.8%. The package mixing adopts a fiber disc for two times of loosening and mixing. The speed during the flexible carding process is: the cylinder speed is 320r / min, the licker-in roller speed is 600r / min, and the cover plate is 0.15m / min. Dye selection: Sumitomo Disperse Blue-B SE-RPD, Sumitomo Disperse Red-R SE-RPD, Sumitomo Disperse Yellow-YACE, Reactive Blue-B BRF, Reactive Red-R3BF, Reactive Yellow-Y 3RF are selected. The strength value of the dye is 112%, and the color fastness at 60℃ is 4 grade; Dyeing process: According to the bath ratio of 1:11.3, add scouring agent and degreasing agent into the large auxiliary tank; control the temperature at 130℃ for 5 minutes, then wash with water at room temperature for 10 minutes, drain and then wash with water again for 5 minutes; the amount of scouring agent-SA-E is 1g / L, the content of degreasing agent-TF-101N is 1.5g / L; the amount of leveling agent-LA-R is 2g / L; add dyeing auxiliary carrier TF, the added mass concentration is 4%; Dyeing triacetate cellulose fiber: add 1.5g / L neutralizing acid-AB 02 and stir for 5 minutes, add 0.35g / L dispersing leveling agent-DL-PL linearly within 10 minutes, 0.00013owf of Sumitomo Disperse Blue-B SE-RPD, 0.000077owf of Sumitomo Disperse Red-RSE-RPD, 0.00012owf of Sumitomo Disperse Yellow-YACE, stir for 5 minutes, heat to 100℃ at a rate of 1℃ / min, run for 40 minutes and drain, wash at 60℃ for 10 minutes and drain; Dyeing Tencel fiber: linearly add leveling agent-LA-R at a dosage of 2g / L, reactive blue-B BRF at a dosage of 0.00022owf, reactive red-R 3BF at a dosage of 0.00021owf, and reactive yellow-Y 3RF at a dosage of 0.0042owf, for 10min: heat up to 60℃ at a rate of 1℃ / min, and run for 10min; Linearly add 10g / L sodium sulfate for 10 minutes and circulate in the cylinder for 20 minutes: Soda ash 10g / L was added linearly for 30min, and the cylinder was circulated for 40min before drainage; Wash with water at 60℃ for 5min and then drain; Soap washing: Add soaping agent-WOLR at a dosage of 1g / L, heat to 60℃ and keep for 15min, then wash with water at 80℃ for 10min, drain, and then wash with water at room temperature for 5min; add textile acid and smoothing agent within 3min: heat to 55℃, keep for 21min and then drain; the dosage of textile acid-P65 is 0.6g / L, and the dosage of smoothing agent-LUA is 0.03owf.

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