Preparation method of dyed cloth with high color fastness and dyed cloth

Abstract

The invention discloses a preparation method of high-color-fastness dyed cloth and the dyed cloth, and relates to the technical field of dyed cloth, grey cloth is pretreated to prepare a semi-finished product, then the semi-finished product is dyed to prepare a dyed semi-finished product, and the dyed semi-finished product is dried to obtain the high-color-fastness dyed cloth. An oxygen soap working solution used in the dyeing process and a liquid used for steaming the oxygen soap are formed by mixing a soaping agent NS, a reduction cleaning agent and sodium hydroxide; after dyeing, carrying out after-finishing, feeding a dyed semi-finished product into a fabric, padding the dyed semi-finished product into an after-finishing working solution, and then carrying out photoelectric weft straightening, tentering, cold water rolling, preshrinking finishing, drying, cold water rolling and cropping to obtain a dyed fabric; and a fastness improver ST220 is added into the after-finishing working solution. The washing fastness, the hand washing fastness and the wet rubbing fastness of the dyed cloth prepared by the preparation method are improved; and the preparation process is simple in flow and high in production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of dyed fabrics, and in particular to a preparation method of dyed fabrics with high color fastness and the dyed fabrics. Background Art

[0002] With the development of science and technology, people's pursuit of spirituality is getting higher and higher, and the requirements for the beauty of fabrics are also getting higher and higher, so it is necessary to dye fabrics. Fabric dyeing can be roughly divided into three basic stages. The first stage: adsorption. When the fabric is put into the dye bath, the dye gradually diffuses from the solution to the surface of the fabric. This process is called adsorption. As time goes by, the dye concentration on the fabric gradually increases, while the dye concentration in the solution gradually decreases. After a period of time, it reaches a state of equilibrium. The reverse process of adsorption is desorption. Adsorption and desorption exist simultaneously during the dyeing process. The second stage: diffusion. The dye adsorbed on the surface of the fabric diffuses into the inside of the fabric until the dye concentration of each part of the fabric tends to be consistent. Since the concentration of the dye adsorbed on the surface of the fabric is greater than the concentration of the dye inside the fabric, the dye is promoted to diffuse from the surface of the fabric to the inside of the fabric. At this time, the diffusion of the dye destroys the adsorption equilibrium initially established, and the dye in the solution will continue to adsorb to the surface of the fabric, and adsorption and desorption reach equilibrium again. The third stage: fixation is the process of dye and fabric combination. The combination method varies with the dye and fabric.

[0003] Dark-colored work clothes are generally used in work environments with severe pollution, such as mining, coal, and chemical industries. However, fabrics processed by ordinary dyeing processes fade severely after hand washing, which can easily stain light-colored fabrics and seriously affect the wearing performance. Sometimes, even after two soap washes after dyeing, the color still fades severely after hand washing.

[0004] At present, dark-colored fabrics, whether dyed with disperse / vat dyeing, single vat dyeing or single reactive dyeing process, if ordinary dyes and ordinary soap detergents are used for soaping, a large amount of floating color will be produced and attached to the surface of the fabric due to insufficient soaping and washing, resulting in deviations in water blister and hand wash fastness.

[0005] Therefore, the dyed fabric prepared by the current dyed fabric preparation method has the defect of low color fastness. Summary of the invention

[0006] Based on the problem that the dyed fabric prepared by the current method for preparing dyed fabric pointed out in the background technology has low color fastness, the object of the present invention is to provide a method for preparing dyed fabric with high color fastness and dyed fabric, and the dyed fabric prepared by the preparation method has high water washing fastness, hand washing fastness and wet rubbing fastness.

[0007] The present invention is achieved through the following technical solutions:

[0008] The present application provides a method for preparing a dyed fabric with high color fastness, comprising the following steps:

[0009] Pre-treatment: the blanks are turned over and sewed in turn, and are dipped and rolled in scouring and bleaching working liquid at a speed of 70-90 m / min, with a liquid rate of 80-90%, and are stacked in a steamer at a temperature of 90-100°C for 40-60 minutes, and washed with hot water at 80-90°C after exiting the steamer, and finally dried, shaped, singed (using four burners, two forward burners, and two reverse burners), fed into a mercerizing machine, dipped in alkali solution (alkali solution concentration is 180-200g / L), washed, dried, and dropped to obtain semi-finished products;

[0010] Dyeing: After the semi-finished product is fed into the cloth, it is dipped into the dye solution at room temperature with a liquid rate of 40-45%, and then pre-dried, hot air dried, baked at 210℃, cold water roller, dipped into reducing liquid, steamed for color development, washed, dipped into oxygen soap working liquid, oxygen soap steamed, high temperature washed, neutralized washed, and dried to obtain the dyed semi-finished product; during hot air drying, the air chamber temperatures are 90℃, 140℃ and 170℃ respectively; the temperatures of the three independent pre-drying air chambers 1# (90℃), 2# (140℃) and 3# (170℃) gradually increase.

[0011] The oxygen soap working liquid and the liquid used for oxygen soap steaming are a mixture of hydrogen peroxide, soaping agent MJ605 or reducing cleaning agent, and sodium hydroxide;

[0012] Finishing: The dyed semi-finished product is fed into the cloth and then dipped into the finishing working liquid, and then subjected to photoelectric weft straightening, tentering (tentering temperature is 150°C, speed is 60-90m / min), cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth;

[0013] The post-finishing working solution is added with a fastness enhancer ST220. By padding the fastness enhancer ST220, a mesh film is formed on the surface of the fabric after drying to wrap the dye and prevent it from falling off.

[0014] Furthermore, the components of the scouring and bleaching working solution include 7-8 g / L caustic soda, 7-8 g / L hydrogen peroxide, 3-5 g / L refining agent, 6-8 g / L quick scouring agent KR-9BK, and 3-5 g / L quick scouring agent KR-9DW.

[0015] Furthermore, the refining agent includes any one of fluoride salt, chloride salt and hexachloroethane.

[0016] Furthermore, softener MJ-8237 is added to the finishing liquid.

[0017] Furthermore, the dye liquor with which the semi-finished product is dipped after being fed into the cloth comprises a high-fastness dispersion liquid and / or a high-fastness reduction dye liquor, or a reactive dye liquor.

[0018] Furthermore, the components of the high-fastness disperse dye solution include disperse dark blue H-WF, disperse black H-WF and disperse ruby ​​H-WF; the components of the high-fastness vat dye solution include vat dark blue 5508, vat black BCN, vat red 6B and anti-migration agent ST-200A.

[0019] Furthermore, the components of the reactive dye solution include reactive black B133, reactive red 3BSN, reactive yellow 3RS, anti-migration agent ST-200A and resist salt S.

[0020] Furthermore, the temperature of oxygen soap steaming is 98°C to 100°C.

[0021] Furthermore, the high temperature water washing temperature after oxygen soap steaming is 85°C to 90°C.

[0022] In a second aspect, the present application provides a dyed fabric with high color fastness, which is prepared using the above-mentioned preparation method.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] The reducing cleaning agent added to the soaping agent used in the preparation method of the present invention can increase the solubility of the auxiliary agent and the unbound fuel remaining on the fabric under an alkaline environment, and play an integrating role with the high-valent metal ions, soften the washing water, have an anti-coagulation effect and a dispersing effect on solid dirt, and wash off the auxiliary agent and the unbound dye remaining on the fabric; in addition, the fastness improving agent ST220 added to the post-finishing liquid can generate an insoluble color lake on the fabric, so that the dye is not easy to fall off when it meets water, and can also form a mesh film on the fiber surface, wrap the dye to prevent it from falling off, and then play a color fixing effect, improve the water washing fastness, hand washing fastness and wet friction fastness of the dyed fabric; and the preparation process is simple and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0026] Figure 1 The figure is a test result of humidity friction fastness of the dyed fabrics prepared in Examples 1 to 3 of the present invention and the dyed fabrics prepared in Comparative Examples 1 to 7;

[0027] Figure 2The test results of the color fastness (original change) of the dyed fabrics prepared in Examples 1 to 3 of the present invention and the dyed fabrics prepared in Comparative Examples 1 to 7 to household and commercial washing are shown in FIG.

[0028] Figure 3 This is a graph showing the test results of the water-scalding color fastness of the dyed fabrics prepared in Examples 1 to 3 of the present invention and the dyed fabrics prepared in Comparative Examples 1 to 7. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 the embodiments.

[0030] Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] This embodiment provides a method for preparing a dyed fabric with high color fastness, which is carried out according to the following steps:

[0033] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0034] Specifically, the bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick bleaching agent KR-9BK, 4g / L quick bleaching agent KR-9DW; quick bleaching agent KR-9BK and quick bleaching agent KR-9DW are both purchased from Shijiazhuang Kunpu Chemical Co., Ltd.

[0035] S2, the semi-finished product prepared in step S1 is fed into the cloth and then immersed in a high-fastness disperse / reduced mixed dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reducing solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0036] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are mixed with 6g / L reducing cleaning agent, 3g / L sodium hydroxide, and 2g / L hydrogen peroxide. Hydrogen peroxide can increase the solubility of the additives and unbound fuels remaining on the fabric in an alkaline environment, integrate with high-valent metal ions, soften the washing water, have anti-coagulation and dispersion effects on solid dirt, and wash off the additives and unbound dyes remaining on the fabric.

[0037] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0038] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0039] Specifically, the components of the disperse / reduced mixed dye solution are 30 g / L of disperse dark blue H-WF, 10 g / L of disperse black H-WF, 0.9 g / L of disperse ruby ​​H-WF; 20 g / L of reduced dark blue 5508, 14 g / L of reduced black BCN, 0.4 g / L of reduced red 6B, and 5 g / L of anti-migration agent ST-200A. Disperse dark blue H-WF, disperse black H-WF, and disperse ruby ​​H-WF were all purchased from Jiangsu Yabang Dye Co., Ltd.; reduced dark blue 5508 and reduced red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dye Group Co., Ltd.); reduced black BCN was purchased from Jiangsu Yabang Dye Co., Ltd.; and anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd.

[0040] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0041] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237; the fastness enhancer ST220 is purchased from Sichuan Yixin Technology Co., Ltd., and the softener MJ-8237 is purchased from Mianyang Jialide Textile Technology Co., Ltd.

[0042] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0043] Example 2

[0044] This embodiment provides a method for preparing a dyed fabric with high color fastness. Different from the embodiment 1, this embodiment uses a single reduction process for dyeing, and is carried out according to the following steps:

[0045] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0046] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0047] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness reduction dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reduction solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0048] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are mixed with 6g / L reducing cleaning agent, 3g / L sodium hydroxide, and 2g / L hydrogen peroxide. Hydrogen peroxide can increase the solubility of the additives and unbound fuels remaining on the fabric in an alkaline environment, integrate with high-valent metal ions, soften the washing water, have anti-coagulation and dispersion effects on solid dirt, and wash off the additives and unbound dyes remaining on the fabric.

[0049] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0050] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0051] Specifically, the composition of the vat dye solution is 20g / L vat dark blue 5508, 14g / L vat black BCN, 0.4g / L vat red 6B, and 5g / L anti-migration agent ST-200A. Vat dark blue 5508 and vat red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dye Group Co., Ltd.); vat black BCN was purchased from Jiangsu Yabang Dye Co., Ltd.; anti-migration agent ST-200A was purchased from Changzhou Jinyuan New Materials Equipment Co., Ltd.

[0052] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0053] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0054] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0055] Example 3

[0056] This embodiment provides a method for preparing a dyed fabric with high color fastness. Different from the embodiment 1, this embodiment uses a single-reactive dyeing process, and is carried out according to the following steps:

[0057] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0058] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0059] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness active dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in a color fixing solution, steamed for color development, washed, immersed in a soap steaming working solution, 100°C soap steaming, 90°C high temperature water washing, neutralized and washed, and dried to obtain a dyed semi-finished product.

[0060] Specifically, the soap steaming working liquid and the liquid used for soap steaming are mixed with 6g / L reducing cleaning agent and 3g / L sodium hydroxide. The reducing cleaning agent can increase the solubility of the additives and unbound fuels remaining on the fabric in an alkaline environment, integrate with high-valent metal ions, soften the washing water, have anti-coagulation and dispersion effects on solid dirt, and wash off the additives and unbound dyes remaining on the fabric.

[0061] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0062] Specifically, the fixing solution is a mixed solution containing 175 g / L of sodium sulphate, 20 g / L of soda ash, and 5 g / L of caustic soda.

[0063] Specifically, the components of the active dye solution are 24g / L of active black B133, 7.2g / L of active red 3BSN, 9.1g / L of active yellow 3RS, 5g / L of anti-migration agent ST-200A, and 5g / L of resist salt S. Reactive black B133 was purchased from Taixing Jinyun Dye Co., Ltd., and active red 3BSN and active yellow 3RS were purchased from Zhejiang Runtu Co., Ltd.; anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd., and resist salt S was purchased from Mianyang Jialide Textile Technology Co., Ltd.

[0064] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0065] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0066] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0067] Comparative Example 1

[0068] This comparative example provides a method for preparing a dyed fabric. The difference from Example 1 is that the components of the disperse / reduced mixed dye liquor used in this comparative example are different from those in Example 1. The components of the disperse dye liquor in this comparative example are 28g / L of dispersed dark blue ECO, 7g / L of dispersed black ECT, and 0.8g / L of dispersed ruby ​​S-5BL; the components of the reduced dye liquor are 23g / L of reduced dark blue VB, 10g / L of reduced olive T, 0.4g / L of reduced red 6B, and 5g / L of anti-migration agent ST-200A. Dispersed dark blue ECO was purchased from Zhejiang Runtu Co., Ltd.; dispersed black ECT and dispersed ruby ​​S-5BL were purchased from Zhejiang Longsheng Group Co., Ltd.; reduced dark blue VB, reduced olive T, and reduced red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dyestuff Group Co., Ltd.); and anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd.

[0069] Follow these steps:

[0070] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0071] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0072] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness disperse / reduced dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reducing solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0073] Specifically, the oxygen soap working solution and the liquid used for oxygen soap steaming are a mixture of 6 g / L reducing cleaning agent, 3 g / L sodium hydroxide, and 2 g / L hydrogen peroxide.

[0074] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0075] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0076] Specifically, the components of the disperse / reduced mixed dye solution are 28g / L disperse dark blue ECO, 7g / L disperse black ECT, 0.8g / L disperse ruby ​​S-5BL; 23g / L reduced dark blue VB, 10g / L reduced olive T, 0.4g / L reduced red 6B, and 5g / L anti-migration agent ST-200A.

[0077] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0078] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0079] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0080] Comparative Example 2

[0081] This comparative example provides a method for preparing a dyed fabric. The difference from Example 2 is that the composition of the reduction dyeing liquid in the single reduction process dyeing used in this comparative example is different. The composition of the reduction dyeing liquid in this comparative example is 23g / L of reduction dark blue VB, 10g / L of reduction olive T, 0.4g / L of reduction red 6B, and 5g / L of anti-migration agent ST-200A. The following steps are performed:

[0082] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0083] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW. S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness reduction dye solution at room temperature, and then pre-dried, hot air dried, cold water rolled, immersed in reduction liquid, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyeing semi-finished product.

[0084] Specifically, the oxygen soap working solution and the liquid used for oxygen soap steaming are a mixture of 6 g / L reducing cleaning agent, 3 g / L sodium hydroxide, and 2 g / L hydrogen peroxide.

[0085] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0086] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0087] Specifically, the composition of the reduced dye solution is 23g / L reduced dark blue VB, 10g / L reduced olive T, 0.4g / L reduced red 6B, and 5g / L anti-migration agent ST-200A. S3, the dyed cloth obtained in step S2 is dipped into the post-finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0088] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0089] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0090] Comparative Example 3

[0091] This comparative example provides a method for preparing a dyed fabric. The difference from Example 1 is that the oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are different from those in Example 1. The oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are mixed with 2g / L hydrogen peroxide and 5g / L soaping agent MJ605, and the steps are as follows:

[0092] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0093] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0094] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness disperse / reduced dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reducing solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0095] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are a mixture of 2g / L hydrogen peroxide and 5g / L soaping agent MJ6055.

[0096] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0097] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0098] Specifically, the components of the disperse / reduced mixed dye solution are 30 g / L of disperse dark blue H-WF, 10 g / L of disperse black H-WF, 0.9 g / L of disperse ruby ​​H-WF; 20 g / L of reduced dark blue 5508, 14 g / L of reduced black BCN, 0.4 g / L of reduced red 6B, and 5 g / L of anti-migration agent ST-200A. Disperse dark blue H-WF, disperse black H-WF, and disperse ruby ​​H-WF were all purchased from Jiangsu Yabang Dye Co., Ltd.; reduced dark blue 5508 and reduced red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dye Group Co., Ltd.); reduced black BCN was purchased from Jiangsu Yabang Dye Co., Ltd.; and anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd.

[0099] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0100] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0101] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0102] Comparative Example 4

[0103] This comparative example provides a method for preparing a dyed fabric. The difference from Example 3 is that the finishing liquid used in this comparative example is different. The finishing material of this comparative example does not contain the fastness enhancer ST220, but only contains 10 g / L of softener.

[0104] Follow these steps:

[0105] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0106] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0107] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness active dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in a color fixing solution, steamed to develop color, washed, immersed in an oxygen soap working solution, steamed with oxygen soap at 100°C, washed with water at 90°C, neutralized and washed, and dried to obtain a dyed semi-finished product.

[0108] Specifically, the oxygen soap working solution and the liquid used for oxygen soap steaming are a mixture of 6 g / L reducing cleaning agent, 2 g / L hydrogen peroxide, and 3 g / L sodium hydroxide.

[0109] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0110] Specifically, the fixing solution is a mixed solution containing 175 g / L of sodium sulphate, 20 g / L of soda ash, and 5 g / L of caustic soda.

[0111] Specifically, the active dye solution contains 24 g / L of active B133, 7.2 g / L of active red 3BSN, 9.1 g / L of active yellow 3RS, 5 g / L of anti-migration agent ST-200A, and 5 g / L of anti-dyeing salt S.

[0112] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0113] Specifically, the finishing working solution contains 10 g / L of softener MJ-8237.

[0114] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0115] Comparative Example 5

[0116] This comparative example provides a method for preparing a dyed fabric. Unlike Example 2, the oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are different from those in Example 2. The oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are mixed by 2 g / L of hydrogen peroxide and 5 g / L of soaping agent MJ605, and the soaping agent MJ605 is purchased from Mianyang Jialide Textile Technology Co., Ltd.

[0117] Follow these steps:

[0118] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0119] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0120] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness reduction dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reduction solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0121] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are a mixture of 2g / L hydrogen peroxide and 5g / L soaping agent MJ605.

[0122] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0123] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0124] Specifically, the composition of the vat dye solution is 20g / L vat dark blue 5508, 14g / L vat black BCN, 0.4g / L vat red 6B, and 5g / L anti-migration agent ST-200A. Vat dark blue 5508 and vat red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dye Group Co., Ltd.); vat black BCN was purchased from Jiangsu Yabang Dye Co., Ltd.; and anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd.

[0125] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0126] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0127] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0128] Comparative Example 6

[0129] This comparative example provides a method for preparing a dyed fabric. The difference from Example 3 is that the oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are different from those in Example 3. The oxygen soap working solution and the liquid used for oxygen soap steaming in this comparative example are mixed with 2g / L hydrogen peroxide and 5g / L soaping agent MJ605, and the steps are as follows:

[0130] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0131] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0132] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness active dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in a color fixing solution, steamed to develop color, washed, immersed in an oxygen soap working solution, steamed with oxygen soap at 100°C, washed with water at 90°C, neutralized and washed, and dried to obtain a dyed semi-finished product.

[0133] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are a mixture of 2g / L hydrogen peroxide and 5g / L soaping agent MJ605.

[0134] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0135] Specifically, the fixing solution is a mixed solution containing 175 g / L of sodium sulphate, 20 g / L of soda ash, and 5 g / L of caustic soda.

[0136] Specifically, the active dye solution contains 24 g / L of active B133, 7.2 g / L of active red 3BSN, 9.1 g / L of active yellow 3RS, 5 g / L of anti-migration agent ST-200A, and 5 g / L of anti-dyeing salt S.

[0137] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0138] Specifically, the finishing working solution contains 30 g / L of fastness enhancer ST220 and 10 g / L of softener MJ-8237.

[0139] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0140] Comparative Example 7

[0141] This comparative example provides a method for preparing a dyed fabric. The difference from Example 1 is that the finishing liquid used in this comparative example is different. The finishing material of this comparative example does not contain a fastness enhancer ST220, but only contains 10 g / L of a softener.

[0142] S1. Pre-treatment: the blank will be turned over and sewed in turn, and then rolled with scouring and bleaching liquid at a speed of 80 m / min, with a liquid rate of 85%, and stacked in a steamer at a temperature of 90°C for 500 minutes. After exiting the steamer, it will be washed with hot water at 85°C, and finally dried, shaped, singed (using four burners, two forward burners and two reverse burners), fed into a mercerizing machine, rolled with alkali solution, washed, dried and dropped to obtain a semi-finished product.

[0143] Specifically, the scouring and bleaching working solution includes the following components: 7g / L caustic soda, 8g / L hydrogen peroxide, 4g / L hexachloroethane, 7g / L quick scouring agent KR-9BK, and 4g / L quick scouring agent KR-9DW.

[0144] S2, the semi-finished product prepared in step S1 is further immersed in a high-fastness disperse / reduced dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, immersed in reducing solution, steamed for color development, washed, immersed in oxygen soap working solution, 100°C oxygen soap steaming, 90°C high temperature water washing, neutralized water washing, and dried to obtain the dyed semi-finished product.

[0145] Specifically, the oxygen soap working liquid and the liquid used for oxygen soap steaming are mixed with 6g / L reducing cleaning agent, 2g / L hydrogen peroxide, and 3g / L sodium hydroxide. Hydrogen peroxide can increase the solubility of the residual additives and unbound fuel on the fabric in an alkaline environment, integrate with high-valent metal ions, soften the washing water, have anti-coagulation and dispersion effects on solid dirt, and wash off the residual additives and unbound dyes on the fabric.

[0146] Specifically, during hot air drying, the air chamber temperatures are 90°C, 140°C and 170°C respectively; the temperatures of the three independent pre-drying air chambers 1# (90°C), 2# (140°C) and 3# (170°C) gradually increase.

[0147] Specifically, the reducing solution used for padding before steaming and color development is a mixed solution containing 30 g / L of caustic soda and 35 g / L of hydrosulfur powder.

[0148] Specifically, the components of the disperse / reduced mixed dye solution are 30 g / L of disperse dark blue H-WF, 10 g / L of disperse black H-WF, 0.9 g / L of disperse ruby ​​H-WF; 20 g / L of reduced dark blue 5508, 14 g / L of reduced black BCN, 0.4 g / L of reduced red 6B, and 5 g / L of anti-migration agent ST-200A. Disperse dark blue H-WF, disperse black H-WF, and disperse ruby ​​H-WF were all purchased from Jiangsu Yabang Dye Co., Ltd.; reduced dark blue 5508 and reduced red 6B were purchased from Xuzhou Kaida Fine Chemical Co., Ltd. (Jiangsu Siling Dye Group Co., Ltd.); reduced black BCN was purchased from Jiangsu Yabang Dye Co., Ltd.; and anti-migration agent ST-200A was purchased from Sichuan Yixin Technology Co., Ltd.

[0149] S3, the dyed cloth obtained in step S2 is dipped into the post-rolling finishing working solution, and then subjected to photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth.

[0150] Specifically, the finishing working solution contains 10 g / L of softener MJ-8237. The softener MJ-8237 was purchased from Mianyang Jialide Textile Technology Co., Ltd.

[0151] Specifically, the tentering temperature was 150° C. and the vehicle speed was 80 m / min.

[0152] The color samples obtained in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, Comparative Example 4, Comparative Example 5, Comparative Example 6, and Comparative Example 7 were measured. The standards used and the test comparison results are shown in Table 1, Table 2, and Table 3. Please also refer to Figures 1 to 3 The actual test result diagram, where Figure 1 The figure is a test result of humidity friction fastness of the dyed fabrics prepared in Examples 1 to 3 and the dyed fabrics prepared in Comparative Examples 1 to 7; Figure 2 The test results of the color fastness (original change) of the dyed fabrics prepared in Examples 1 to 3 and the dyed fabrics prepared in Comparative Examples 1 to 7 to home and commercial washing are shown in FIG. Figure 3 The figure is a test result diagram of the water ironing color fastness of the dyed fabrics prepared in Examples 1 to 3 and the dyed fabrics prepared in Comparative Examples 1 to 7.

[0153] Table 1 shows the fabric test standards and comparative test results of Example 1, Comparative Example 1, Comparative Example 3 and Comparative Example 7.

[0154]

[0155]

[0156] It can be seen from Table 1 that the color sample obtained in Example 1 has good water washing fastness and hand washing fastness compared with the color samples obtained in Comparative Examples 1, 3 and 7.

[0157] Table 2 shows the test standards and comparative test results of the fabrics obtained in Example 2, Comparative Example 2 and Comparative Example 5.

[0158]

[0159] It can be seen from Table 2 that the color sample obtained in Example 2 has good water washing fastness and hand washing fastness compared with the color samples obtained in Comparative Examples 2 and 5.

[0160] Table 3 shows the test standards and comparative test results of the fabrics obtained in Example 3, Comparative Examples 4 and 6.

[0161]

[0162]

[0163] It can be seen from Table 3 that the color sample obtained in Example 3 has better water washing fastness and hand washing fastness than the color samples obtained in Comparative Examples 4 and 6.

[0164] In summary, the dyed fabric prepared by the preparation method of the present invention can improve the washing fastness, hand washing fastness and wet rubbing fastness of the dyed fabric; and the preparation process is simple and the production efficiency is high.

[0165] The specific implementation methods described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only the specific implementation methods of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application.

Claims

1. A method for preparing a dyed fabric with high color fastness, characterized in that: The following steps are involved: Pre-treatment: The grey cloth is padded with scouring and bleaching liquid and then stacked in a steamer. After exiting the steamer, it is washed with hot water, dried, shaped, singed, fed into a mercerizing machine, padded with alkali solution, washed, dried and dropped to obtain a semi-finished product. Dyeing: After the semi-finished product is fed into the cloth, it is dipped into the dye solution at room temperature, and then pre-dried, hot air dried, baked, cold water rolled, dipped into the reducing solution, steamed for color development, washed, dipped into the oxygen soap working solution, oxygen soap steamed, high temperature washed, neutralized washed, and dried to obtain the dyed semi-finished product; The oxygen soap working liquid and the liquid used for oxygen soap steaming are a mixture of hydrogen peroxide, soaping agent MJ605 or reducing cleaning agent, and sodium hydroxide; Finishing: The dyed semi-finished product is fed into the cloth and then dipped into the finishing working liquid, and then goes through photoelectric weft straightening, tentering, cold water roller, pre-shrinking finishing, drying, cold water roller and cloth dropping to obtain the dyed cloth; The fastness enhancer ST220 is added into the post-finishing working solution.

2. The method for preparing a dyed fabric with high color fastness according to claim 1, characterized in that: The components of the scouring and bleaching working solution include caustic soda, hydrogen peroxide, refining agent, quick scouring agent KR-9BK and quick scouring agent KR-9DW.

3. The method for preparing a dyed fabric with high color fastness according to claim 2, characterized in that: The refining agent includes any one of fluoride salt, chloride salt and hexachloroethane.

4. The method for preparing a dyed fabric with high color fastness according to claim 1, characterized in that: Softener MJ-8237 is also added to the finishing liquid.

5. The method for preparing a dyed fabric with high color fastness according to claim 1, characterized in that: The dye liquor used for padding the semi-finished product after it is put into cloth includes a high-fastness dispersion liquid and / or a high-fastness reduction dye liquor, or a reactive dye liquor.

6. The method for preparing a dyed fabric with high color fastness according to claim 5, characterized in that: The high-fastness disperse dye solution comprises disperse dark blue H-WF, disperse black H-WF and disperse ruby ​​H-WF; the high-fastness vat dye solution comprises vat dark blue 5508, vat black BCN, vat red 6B and anti-migration agent ST-200A.

7. The method for preparing a dyed fabric with high color fastness according to claim 5, characterized in that: The components of the reactive dye solution include reactive black B133, reactive red 3BSN, reactive yellow 3RS, anti-migration agent ST-200A and resist salt S.

8. The method for preparing a dyed fabric with high color fastness according to claim 1, characterized in that: The temperature of oxygen soap steam is 98℃~100℃.

9. The method for preparing a dyed fabric with high color fastness according to claim 1, characterized in that: The high temperature water washing temperature after oxygen soap steaming is 85℃~90℃.

10. A dyed fabric with high color fastness, characterized in that: The preparation method is described in any one of claims 1 to 9.

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