Dyeing and finishing process of spandex fabric

Abstract

The present application relates to a kind of acrylic fabric dyeing and finishing process, including low temperature adding disperse dye, and glacial acetic acid is used to dye fabric, when the dosage of disperse dye exceeds 2.0%, it needs to be reduced twice cleaning, when the dosage of dye is 0.5%~2.0%, it needs to be reduced once cleaning, remove surface attached disperse dye;When the dosage of dye is 0.5% or less, it does not need to be reduced cleaning, after completing reduction cleaning, adding organic acid to fabric for acid neutralization treatment, dehydration after tank, opening, setting.The present application can realize energy saving and time saving in dyeing process, improve the turnover rate of dyeing vat, can satisfy full color system dyeing, high dye uptake, bright color, high color fastness, good cloth surface quality.After dyeing, the hand feeling is softer than conventional polyester.

Description

Technical Field

[0001] This invention relates to the technical field of dyeing and finishing processes, and in particular to a dyeing and finishing process for cyan fabrics. Background Technology

[0002] Polyester fabric is widely used in clothing, outerwear, bags, tents, and other outdoor products due to its excellent wrinkle resistance and shape retention. However, the disadvantages of polyester fabric are also obvious. Polyester fabric is smooth but not soft enough. Its hydrophobic nature makes it stuffy, not breathable, and prone to pilling. Polyester requires high-temperature dyeing at around 125-130 degrees Celsius, and when blended with other fibers, high-temperature dyeing can easily damage the other blended fibers. Furthermore, high-temperature, high-pressure dyeing is very time-consuming and energy-intensive.

[0003] In view of the problems that conventional high-temperature dyeing of polyester is time-consuming and energy-intensive, and can easily cause high-temperature damage to other low-temperature fibers when mixed in, the purpose of this invention is to provide a dyeing and finishing process for low-temperature dyeing of polyester. Summary of the Invention

[0004] The purpose of this invention is to provide a dyeing and finishing process for cyan fabrics that achieves energy and time savings, increases the turnover rate of dyeing vats, results in high dyeing rate, bright colors, high color fastness, and good fabric quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dyeing and finishing process for cyan fabric, comprising the following steps:

[0006] Step S1, Dyeing process: At room temperature, put water and cyano-dyed fabric into the dyeing vat and run it for 5-15 minutes. Then add the dye solution for 20-30 minutes. After adding the dye solution, run it for another 5-15 minutes. Then add glacial acetic acid for 10-20 minutes. After adding the dye solution, raise the temperature to 95-100℃ and keep it at 95-100℃ for 30-60 minutes. After keeping it at 95-100℃, lower the temperature to 55-60℃ and drain the water. Wash with hot water for 1-2 vats.

[0007] Step S2, Cleaning Preparation: When the amount of disperse dye in the dye solution is less than 0.5%, no reduction cleaning is required, and step S5 can be directly performed; when the amount of disperse dye in the dye solution is 0.5% to 2.0%, a first reduction cleaning is required, and steps S3 and S5 can be directly performed; when the amount of disperse dye in the dye solution exceeds 2.0%, two reduction cleanings are required, and steps S3, S4, and S5 can be performed.

[0008] Step S3, First reduction cleaning process: At room temperature, heat to 75-90℃ at a heating rate of 1-2℃ / min, keep warm for 20-30min, and after the holding time is completed, cool down to 50℃ at a cooling rate of 1-2℃ / min, and wash with cold water once.

[0009] Step S4, Second reduction cleaning process: Add caustic soda flakes and reducing cleaning agent sequentially at room temperature, heat to 75-90℃ at a heating rate of 1-2℃ / min, add sodium hydrosulfite, keep warm for 20-30min, after the heat preservation is completed, cool down to 50℃ at a cooling rate of 1-2℃ / min, and wash with cold water twice.

[0010] Step S5, acid neutralization process: After washing, add organic acid at room temperature, heat to 60-80℃ at a heating rate of 2-3℃ / min, keep at this temperature for 20 minutes, and after the holding time is completed, cool down to 60-80℃ at a cooling rate of 2-3℃ / min, wash with cold water for two tanks, and then remove from the tank.

[0011] Furthermore, the step S1 of "running in the dyeing vat for 5 to 15 minutes" further means: when the amount of disperse dye in the dye solution does not exceed 4%, the leveling agent and high-temperature repair agent are dispersed in the dyeing vat and run for 5 to 15 minutes; when the amount of disperse dye in the dye solution exceeds 4%, the dyeing vat is directly run for 5 to 15 minutes.

[0012] Furthermore, in step S1, the heating rate after the addition of glacial acetic acid is 1-2°C / min, and the cooling rate after the heat preservation is 1-2°C / min.

[0013] Furthermore, in step S1, the amount of dispersing and leveling agent is 0.3–1.0 g / L, the amount of high-temperature repair agent is 0.5–1.0 g / L, and the amount of glacial acetic acid is 0.5–1.3 g / L.

[0014] Furthermore, the amount of disperse dye in the dye solution in step S1 is 0.1% to 7%.

[0015] Furthermore, in step S4, the amount of caustic soda flakes is 1-3 g / L, the amount of sodium hydrosulfite is 2-6 g / L, and the amount of reducing cleaning agent is 1-3 g / L.

[0016] Furthermore, in step S5, the amount of organic acid used is 1–1.5 g / L.

[0017] Furthermore, it also includes step S6, post-setting process: in the wet cloth state, the post-setting temperature is 120~140℃, and the machine speed is 20m / min~40m / min.

[0018] The beneficial effects of this invention are as follows: The dyeing process provided by this invention is specifically designed for cyanocellulose and is not applicable to conventional polyester dyeing processes. Compared to conventional polyester, the dyeing process for cyanocellulose using this invention not only allows for low-temperature dyeing, eliminating the need for high-temperature dyeing at 130°C, thus saving energy and time and increasing the turnover rate of the dyeing vat, but also solves the problem of high-temperature damage to low-temperature fibers when polyester is interwoven with other low-temperature fibers. The dyeing process for cyanocellulose using this invention can meet the requirements for dyeing in all color series. It results in high dye uptake, vibrant colors, high color fastness, and good fabric quality. The hand feel after dyeing is softer than that of conventional polyester. Attached Figure Description

[0019] Figure 1 It is the color fastness of cyanoacrylate dyed at a low temperature of 98°C with a dye dosage of 3%.

[0020] Figure 2 This is a test report on dyed fabric surface of cyanoacrylate fabric at a dye dosage of 3% and a low temperature of 98℃, according to the HM fabric testing standard.

[0021] Figure 3 This is a Datacolor color difference report comparing the color of cyanoacrylate dyed with conventional polyester dyed with the same standard sample at a dye dosage of 3% and a low temperature of 98℃.

[0022] Figure 4 It is the color fastness of cyanoacrylate dyed at a dye dosage of 6% and a low temperature of 98℃.

[0023] Figure 5 This is a test report on dyed fabric surface of cyanoacrylate fabric at a dye dosage of 6% and a low temperature of 98℃, according to the HM fabric testing standard.

[0024] Figure 6 This is a Datacolor color difference report comparing the color of cyanoacrylate dyed with conventional polyester dyed with the same standard sample at a dye dosage of 6% and a low temperature of 98℃.

[0025] Figure 7 It is the color fastness of cyanoacrylate dyed at a low temperature of 98℃ with an 8% dye dosage.

[0026] Figure 8 This is a test report on dyed fabric surface of cyanoacrylate fabric tested according to HM fabric testing standards under conditions of 8% dye usage and low temperature of 98℃.

[0027] Figure 9 This is a Datacolor color difference report comparing the color of cyanoacrylate dyed with conventional polyester dyed with the same standard sample at a dye dosage of 8% and a low temperature of 98℃. Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Please see Figures 1 to 3The present invention provides an embodiment of a dyeing and finishing process for cyan fabric, comprising the following steps:

[0030] Step S1, Dyeing Process: At room temperature, place water and polyester fabric in the dyeing vat and run it for 5-15 minutes. Then add the dye solution for 20-30 minutes. After adding the dye solution, run it for another 5-15 minutes. Then add glacial acetic acid for 10-20 minutes. After adding the acetic acid, raise the temperature to 95-100℃ and hold it at that temperature for 30-60 minutes. After holding, lower the temperature to 55-60℃ and drain the water. Wash with hot water for 1-2 batches. In this dyeing process, not only can low-temperature dyeing be achieved without the need for high-temperature dyeing at 130℃, thus saving energy and time and increasing the turnover rate of the dyeing vat, but it also solves the problem of high-temperature damage to low-temperature fibers when polyester is interwoven with other low-temperature fibers.

[0031] Step S2, Preparatory Cleaning Process: When the amount of disperse dye in the dye solution is less than 0.5%, reduction cleaning is not required; proceed directly to step S5. When the amount of disperse dye in the dye solution is between 0.5% and 2.0%, a first reduction cleaning is required; proceed directly to steps S3 and S5. When the amount of disperse dye in the dye solution exceeds 2.0%, two reduction cleanings are required; proceed to steps S3, S4, and S5. Two reduction cleanings are required for dye amounts exceeding 2.0%. One reduction cleaning is required for dye amounts between 0.5% and 2.0%. No reduction cleaning is required for dye amounts less than 0.5%.

[0032] Step S3, First Reduction Cleaning Process: At room temperature, heat to 75-90℃ at a heating rate of 1-2℃ / min, hold for 20-30 minutes, and after holding, cool to 50℃ at a cooling rate of 1-2℃ / min, then wash with cold water once. After dyeing, perform reduction cleaning to remove surface-adhered disperse dye and improve fastness.

[0033] Step S4, Second Reduction Cleaning Process: Add caustic soda flakes and reducing cleaning agent sequentially at room temperature, raise the temperature to 75-90℃ at a heating rate of 1-2℃ / min, add sodium hydrosulfite, and keep warm for 20-30 minutes. After the heat preservation is completed, cool down to 50℃ at a cooling rate of 1-2℃ / min, and wash twice with cold water. Because the amount of disperse dye in the dye solution exceeds 2.0%, there are still residues on the surface of the fabric after the first wash. The second reduction cleaning process can further remove the disperse dye attached to the surface and strengthen the fastness.

[0034] Step S5, acid neutralization process: After washing, add organic acid at room temperature, heat to 60-80℃ at a heating rate of 2-3℃ / min, keep at this temperature for 20 minutes, and after the holding time is completed, cool down to 60-80℃ at a cooling rate of 2-3℃ / min, wash with cold water for two tanks, and then remove from the tank.

[0035] Qinglun fabric is a double-knitted fabric composed of 66% polyester and 34% elastane. Qinglun is a new type of modified polyester with an initial modulus 20% lower than ordinary polyester of the same specification, improving fabric softness. It is inherently hydrophilic, possessing permanent moisture-wicking properties without the need for finishing agents. It exhibits better pilling resistance than ordinary polyester, avoiding the discomfort of itching and chafing caused by pilling, and has an aesthetically pleasing appearance. Qinglun can be dyed at low temperatures (95-100℃) under normal pressure, and can be combined with other low-temperature fibers without being damaged by high temperatures. Low-temperature dyeing saves more than 30% of energy, shortens dyeing time by 25%, and effectively improves dyeing vat turnover. It can meet the dyeing requirements of ordinary polyester, including black, with a dye uptake rate of over 92% and high dye utilization. Dyed fabrics have bright colors and a color fastness of grade 4 or higher. In addition to the above advantages, it also maintains the dimensional stability, good resilience, and wrinkle-free characteristics of conventional polyester.

[0036] Please continue reading. Figures 1 to 3 As shown in one embodiment of the present invention, step S1, "running in the dyeing vat for 5-15 minutes," further comprises: when the amount of disperse dye in the dye solution does not exceed 4%, dispersing the leveling agent and high-temperature repair agent in the dyeing vat and running for 5-15 minutes; when the amount of disperse dye in the dye solution exceeds 4%, directly running in the dyeing vat for 5-15 minutes. When the disperse dye reaches 4% or more, the leveling agent and high-temperature repair agent may not be added.

[0037] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the heating rate after the addition of glacial acetic acid in step S1 is 1-2°C / min, and the cooling rate after the heat preservation is 1-2°C / min.

[0038] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the amount of dispersing and leveling agent used in step S1 is 0.3-1.0 g / L, the amount of high-temperature repair agent is 0.5-1.0 g / L, and the amount of glacial acetic acid is 0.5-1.3 g / L.

[0039] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the amount of disperse dye in the dye solution in step S1 is 0.1-7%.

[0040] Please continue reading. Figures 1 to 3As shown, in one embodiment of the present invention, the amount of caustic soda flakes used in step S4 is 1-3 g / L, the amount of sodium hydrosulfite is 2-6 g / L, and the amount of reducing cleaning agent is 1-3 g / L.

[0041] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the amount of organic acid used in step S5 is 1 to 1.5 g / L.

[0042] Please continue reading. Figures 1 to 3 As shown, in one embodiment of the present invention, the process further includes step S6, post-setting process: in the wet cloth state, the post-setting temperature is 120-140℃, and the machine speed is 20m / min-40m / min. A hand-feeling additive is applied with one dip and one roll to achieve a soft hand feel and meet the required specifications. Specific Implementation

[0043] The above-mentioned objective of this invention is achieved through the following technical solution:

[0044] Dyeing: The dyeing process formula is as follows:

[0045] Disperse dyes 3.0%;

[0046] Disperse leveling agent 1.0 g / L;

[0047] High-temperature repair agent 0.7 g / L;

[0048] Glacial acetic acid 1.3 g / L;

[0049] First, add the fabric to room temperature water, then add the dispersing and leveling agent and high-temperature repair agent. Run for 5-15 minutes, then add the dye solution for 30 minutes, run for another 15 minutes, then add glacial acetic acid for 20 minutes. After adding the dye, raise the temperature to 98 degrees Celsius at a rate of 1°C / min and hold for 30 minutes. After holding, lower the temperature to 55 degrees Celsius at a rate of 1.5°C / min and drain. Wash with two tubs of hot water.

[0050] First reduction cleaning treatment: After dyeing, a reduction cleaning treatment is performed to remove the disperse dye adhering to the surface and to strengthen the fastness. The process is as follows:

[0051] Caustic soda 2g / L;

[0052] Sodium hydrosulfite 4g / L;

[0053] Reduction cleaning agent 2g / L;

[0054] Heat the sample to 80 degrees Celsius at a rate of 2°C / min, hold for 20 minutes, then cool to 50 degrees Celsius at a rate of 2°C / min and rinse with cold water once.

[0055] Second reduction cleaning treatment: Further removes surface-adhered disperse dyes and strengthens fastness. The process is as follows:

[0056] Caustic soda 2g / L;

[0057] Sodium hydrosulfite 4g / L;

[0058] Reduction cleaning agent 2g / L;

[0059] Add caustic soda flakes and reducing cleaning agent sequentially at room temperature. Heat to 80 degrees Celsius at a rate of 2°C / min, add sodium hydrosulfite, and maintain the temperature for 20 minutes. After the maintenance is complete, cool to 50 degrees Celsius at a rate of 2°C / min, and rinse twice with cold water.

[0060] Acid neutralization:

[0061] Organic acids 1.3 g / L;

[0062] After washing, add organic acid at room temperature, heat to 60 degrees Celsius at a rate of 2°C / min, hold at this temperature for 20 minutes, then cool to 50 degrees Celsius at a rate of 2°C / min. Wash with cold water for two cycles before removing from the tank. After removing from the tank, dehydrate, open, and set.

[0063] (5) Later determined:

[0064] In the wet state, the final temperature is set at 130℃, and the machine speed is 22m / min. A hand-feeling additive is applied with one dip and one roll to achieve a soft hand feel and meet the required specifications. Specific Implementation

[0065] The above-mentioned objective of this invention is achieved through the following technical solution:

[0066] Dyeing: The dyeing process formula is as follows:

[0067] Disperse dyes 6.0%;

[0068] Glacial acetic acid 1.3 g / L;

[0069] First, add the fabric to room temperature water, then add the dye solution for 30 minutes. Run the solution for another 15 minutes, then add glacial acetic acid for 20 minutes. After adding the dye, heat the solution to 98 degrees Celsius at a rate of 1°C / min and hold for 30 minutes. After holding, cool the solution to 55 degrees Celsius at a rate of 1.5°C / min and drain the water. Wash with two tubs of hot water.

[0070] First reduction cleaning treatment: After dyeing, a reduction cleaning treatment is performed to remove the disperse dye adhering to the surface and to strengthen the fastness. The process is as follows:

[0071] Caustic soda 2g / L;

[0072] Sodium hydrosulfite 4g / L;

[0073] Reduction cleaning agent 2g / L;

[0074] Heat the sample to 80 degrees Celsius at a rate of 2°C / min, hold for 20 minutes, then cool to 50 degrees Celsius at a rate of 2°C / min and rinse with cold water once.

[0075] Second reduction cleaning treatment: Further removes surface-adhered disperse dyes and strengthens fastness. The process is as follows:

[0076] Caustic soda 2g / L;

[0077] Sodium hydrosulfite 4g / L;

[0078] Reduction cleaning agent 2g / L;

[0079] Add caustic soda flakes and reducing cleaning agent sequentially at room temperature. Heat to 80 degrees Celsius at a rate of 2°C / min, add sodium hydrosulfite, and maintain the temperature for 20 minutes. After the maintenance is complete, cool to 50 degrees Celsius at a rate of 2°C / min, and rinse twice with cold water.

[0080] Acid neutralization:

[0081] Organic acids 1.3 g / L;

[0082] After washing, add organic acid at room temperature, heat to 60 degrees Celsius at a rate of 2°C / min, hold at this temperature for 20 minutes, then cool to 50 degrees Celsius at a rate of 2°C / min. Wash with cold water for two cycles before removing from the tank. After removing from the tank, dehydrate, open, and set.

[0083] (5) Later determined:

[0084] In the wet state, the final temperature is set at 130℃, and the machine speed is 22m / min. A hand-feeling additive is applied with one dip and one roll to achieve a soft hand feel and meet the required specifications.

[0085] In the wet state, the final temperature is set at 130℃, and the machine speed is 22m / min. A hand-feeling additive is applied with one dip and one roll to achieve a soft hand feel and meet the required specifications.

[0086] The difference between Example 3 and Example 1 is that (1) in the dyeing step, the amount of dye dispersed in the dye solution is 1.5%, and (3) the second reduction and cleaning treatment is not required.

[0087] The difference between Example 4 and Example 1 is that (1) in the dyeing step, the amount of dye dispersed in the dye solution is 0.4%, and there is no need for step (2) first reduction cleaning treatment and step (3) second reduction cleaning treatment.

[0088] Comparative Example 1:

[0089] The above-mentioned objective of this invention is achieved through the following technical solution:

[0090] Dyeing: The dyeing process formula is as follows:

[0091] Disperse dyes 8.0%;

[0092] Glacial acetic acid 1.3 g / L;

[0093] First, add the fabric to room temperature water, then add the dye solution for 30 minutes. Run for another 15 minutes, then add glacial acetic acid for 20 minutes. After adding the dye, heat the fabric to 98 degrees Celsius at a rate of 1°C / min and hold for 30 minutes. After holding, cool the fabric to 55 degrees Celsius at a rate of 1.5°C / min and drain. Wash with two tubs of hot water.

[0094] First reduction cleaning treatment: After dyeing, a reduction cleaning treatment is performed to remove the disperse dye adhering to the surface and to strengthen the fastness. The process is as follows:

[0095] Caustic soda 2g / L;

[0096] Sodium hydrosulfite 4g / L;

[0097] Reduction cleaning agent 2g / L;

[0098] Heat the sample to 80 degrees Celsius at a rate of 2°C / min and hold for 20 minutes. After holding, cool the sample to 50 degrees Celsius at a rate of 2°C / min and rinse with cold water once.

[0099] Second reduction cleaning treatment: Further removes surface-adhered disperse dyes and strengthens fastness. The process is as follows:

[0100] Caustic soda 2g / L;

[0101] Sodium hydrosulfite 4g / L;

[0102] Reduction cleaning agent 2g / L;

[0103] Add caustic soda flakes and reducing cleaning agent sequentially at room temperature. Heat to 80 degrees Celsius at a rate of 2°C / min, add sodium hydrosulfite, and maintain the temperature for 20 minutes. After the maintenance period, cool to 50 degrees Celsius at a rate of 2°C / min and rinse twice with cold water.

[0104] Acid neutralization:

[0105] Organic acids 1.3 g / L;

[0106] After washing, add organic acid at room temperature. Heat to 60 degrees Celsius at a rate of 2°C / min and hold for 20 minutes. After holding, cool to 50 degrees Celsius at a rate of 2°C / min, wash with cold water for two cycles, and then remove from the tank. After removing from the tank, dehydrate, open, and set.

[0107] (5) Later determined:

[0108] In the wet state, the final temperature is set at 130℃, and the machine speed is 22m / min. A hand-feeling additive is applied with one dip and one roll to achieve a soft hand feel and meet the required specifications.

[0109] To further illustrate the effects of this invention, the test data and detection data of the dyed and finished fabrics of this invention are as follows:

[0110] like Figures 1 to 3 As shown, the dye dosage is 3%. It can be seen that low-temperature dyeing of polyester at 98℃ not only achieves the same coloring effect as conventional high-temperature dyeing of polyester, but also achieves a colorfastness of grade 4. The fabric quality is OK.

[0111] like Figures 4 to 6 As shown, the dye dosage is 6%. It can be seen that dyeing cyan at low temperature (98℃) not only achieves the same coloring effect as conventional high-temperature dyeing of polyester, but also achieves a colorfastness of grade 4. The fabric quality is OK.

[0112] like Figures 7 to 9 As shown, the dye usage is 8%. It can be seen that the low-temperature 98℃ dyeing of polyester not only achieves the same coloring effect as conventional high-temperature dyeing of polyester, but also has a colorfastness of grade 3. The fabric quality is OK.

[0113] When the dye dosage is 1.5% and 0.4%, the resulting fabric has a color fastness of grade 4, and the fabric quality is OK.

[0114] The conclusion is that when dyeing cyan, if the dye concentration is less than 6%, the color fastness is grade 4 and the fabric quality is OK.

[0115] When dyeing cyan, if the dye concentration is greater than 6%, the color fastness does not reach level 4, but the fabric quality is OK.

[0116] The above description is only a preferred embodiment of the present invention and should not be construed as a limitation of this application. All equivalent changes and modifications made in accordance with the scope of the patent application of the present invention should be covered by the present invention.

Claims

1. A dyeing and finishing process for cyan fabric, characterized in that, Includes the following steps: Step S1, Dyeing process: At room temperature, put water and cyano-dyed fabric into the dyeing vat and run it for 5-15 minutes. Then add the dye solution for 20-30 minutes. After adding the dye solution, run it for another 5-15 minutes. Then add glacial acetic acid for 10-20 minutes. After adding the dye solution, raise the temperature to 95-100℃ and keep it at 95-100℃ for 30-60 minutes. After keeping it at 95-100℃, lower the temperature to 55-60℃ and drain the water. Wash with hot water for 1-2 vats. Step S2, Cleaning Preparation: When the amount of disperse dye in the dye solution is less than 0.5%, no reduction cleaning is required, and step S5 can be directly performed; when the amount of disperse dye in the dye solution is 0.5% to 2.0%, a first reduction cleaning is required, and steps S3 and S5 can be directly performed; when the amount of disperse dye in the dye solution exceeds 2.0%, two reduction cleanings are required, and steps S3, S4, and S5 can be performed. Step S3, First reduction cleaning process: At room temperature, heat to 75-90℃ at a heating rate of 1-2℃ / min, keep warm for 20-30min, after the holding time is completed, cool down to 50℃ at a cooling rate of 1-2℃ / min, and wash with cold water once. Step S4, Second reduction cleaning process: Add caustic soda flakes and reducing cleaning agent sequentially at room temperature, heat to 75-90℃ at a heating rate of 1-2℃ / min, add sodium hydrosulfite, keep warm for 20-30min, after the heat preservation is completed, cool down to 50℃ at a cooling rate of 1-2℃ / min, and wash with cold water twice. Step S5, acid neutralization process: After washing, add organic acid at room temperature, heat to 60-80℃ at a heating rate of 2-3℃ / min, keep at this temperature for 20 minutes, and after the holding time is completed, cool down to 60-80℃ at a cooling rate of 2-3℃ / min, wash with cold water for two tanks, and then remove from the tank. The step S1, "running in the dyeing vat for 5-15 minutes", is further defined as follows: when the amount of disperse dye in the dye solution does not exceed 4%, the leveling agent and high-temperature repair agent are dispersed in the dyeing vat and run for 5-15 minutes; when the amount of disperse dye in the dye solution exceeds 4%, the dyeing vat is run directly for 5-15 minutes.

2. The dyeing and finishing process for cyan fabric according to claim 1, characterized in that: The heating rate after the addition of glacial acetic acid in step S1 is 1-2℃ / min, and the cooling rate after the heat preservation is completed is 1-2℃ / min.

3. The dyeing and finishing process for cyan fabric according to claim 2, characterized in that: In step S1, the amount of dispersing and leveling agent used is 0.3–1.0 g / L, the amount of high-temperature repair agent used is 0.5–1.0 g / L, and the amount of glacial acetic acid used is 0.5–1.3 g / L.

4. The dyeing and finishing process for cyan fabric according to claim 1, characterized in that: The amount of disperse dye used in the dye solution in step S1 is 0.1-7%.

5. The dyeing and finishing process for cyan fabric according to claim 1, characterized in that: In step S4, the amount of caustic soda flakes is 1-3 g / L, the amount of sodium hydrosulfite is 2-6 g / L, and the amount of reducing cleaning agent is 1-3 g / L.

6. The dyeing and finishing process for cyan fabric according to claim 1, characterized in that: The amount of organic acid used in step S5 is 1 to 1.5 g / L.

7. The dyeing and finishing process for cyan fabric according to claim 1, characterized in that: It also includes step S6, post-setting process: in the wet cloth state, the post-setting temperature is 120~140℃, and the machine speed is 20m / min~40m / min.

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