KR102734511B1 - Beam dyeing method of silk fabric and silk fabric dyed of the same method - Google Patents

Abstract

The present invention relates to a beam dyeing method capable of uniformly dyeing a silk fabric and a silk fabric manufactured by dyeing using the method.

Description

Beam dyeing method of silk fabric and silk fabric dyed of the same method

The present invention relates to a beam dyeing method capable of uniformly dyeing a silk fabric and a silk fabric manufactured by dyeing using the method.

Silk is a long, smooth thread pulled from a silkworm cocoon. Silk fabrics made with silk have an elegant sheen. In addition, it is considered a high-quality fabric because it has excellent heat retention, absorbs moisture well, has a soft touch, and has a high sheen. However, it is weak to sunlight, sweat, and pollution, so care must be taken when wearing and washing it. It is used for lingerie, women's clothing, comforters, scarves, and men's ties. Recently, blended fabrics that combine the advantages of silk and synthetic fibers are widely used.

Silkworms make cocoons by spitting them out, and when this raw silk is refined, it becomes refined silk (aka silk) with excellent luster and texture. Silk raw silk contains about 76% fibroin, the essence of silk, and about 22% sericin, and sericin is created to protect fibroin. When sericin covers fibroin like raw silk, the thread is thick, stiff, and cool, like ramie fiber, and when sericin is removed through refining, it becomes a fiber with the elegant luster and soft texture unique to silk, called silk, and the fabric woven from this is called silk fabric.

The most common method among the dyeing methods for silk fabrics is immersion dyeing, which involves placing the silk fabric on a carrier in a tank containing dyeing pigments, and then immersing the carrier in the tank so that the pigments are colored into the silk fabric, or a continuous dyeing process.

These existing silk fabric dyeing methods are time-consuming and require large dyeing equipment, which makes them unsuitable for automated processes. They also have limitations in meeting the demands of modern, diverse silk fabrics. In addition, they have problems with dyeing uniformity, low productivity, and difficulty in efficiently using dyes. In addition, the fabric surface is easily damaged due to the very sensitive nature of silk fabrics, and moire (wave patterns) are generated during dyeing, which limits the production of silk fabric products that are dyed evenly.

Korean Patent Registration No. 10-0220126 (1999.06.18) Korean Patent Registration No. 10-2175821 (2013.06.11)

The purpose of the present invention is to provide a beam dyeing method for silk fabrics which enables uniform dyeing of silk fabrics while increasing dye usage efficiency and improving productivity.

The present invention for solving the above-described problem relates to a method for dyeing a silk fabric, comprising the steps of: a first step of evenly winding a silk fabric and a polyester fabric onto a beam while bonding them; and a second step of putting the bonded fabric wound onto the beam into a dyeing tank of a beam dyeing machine and then performing a dyeing treatment process. An acid dye solution or a reactive dye solution is added to the dyeing tank.

In addition, the present invention aims to provide a silk fabric dyed using the above dyeing method.

Silk fabrics dyed using the dyeing method of the present invention can be dyed uniformly and have excellent fastness (fastness to sweat, water and sunlight), thereby providing silk fabric products with improved productivity while increasing dye usage efficiency.

Figure 1 is a photograph of a silk fabric dyed with an acid dye solution in Example 1.
Figure 2 is a photograph of a silk fabric dyed with a reactive dye in Example 2.
Figures 3a to 3d show the results of evaluation of hazardous substances and fastness (sweat/light complex fastness, sweat fastness, water fastness) of the woven fabric of Example 1, commissioned to KOTITI.
Figures 4a to 4d show the results of evaluation of hazardous substances and fastness (sweat/light complex fastness, sweat fastness, water fastness) for the woven fabric of Example 2, commissioned to KOTITI.

Hereinafter, the present invention will be described in detail through a method for dyeing the woven fabric of the present invention.

The method for dyeing a silk fabric of the present invention comprises the steps of: a first step of evenly winding a silk fabric and a polyester fabric onto a beam while bonding them together; and a second step of putting the bonded fabric wound onto the beam into a dyeing tank of a beam dyeing machine and then performing a dyeing process, thereby dyeing the silk fabric.

The above polyester fabric serves to help the dye to be dyed evenly by separating the space between the fabrics, and also serves to prevent friction between the fabrics, thereby preventing damage to the fabric and the expression of the pattern (moire) due to the pressure of the pump inside the beam dyeing machine. In addition, the polyester fabric uses a fabric that does not discolor with acid dyes and reactive dyes, and a preferable example is a fabric woven with polyester monofilament 75D X 75D, or monofilament 75D X 50D, and preferably, a fabric manufactured by weaving with polyester monofilament 75D X 75D yarn on a loom and refining to 8% shrinkage can be used.

And, the polyester fiber may have a denier of 50 to 80D and a filament count of 1 to 5, and preferably, a denier of 72 to 78D and a filament count of 1 to 2. At this time, if the denier is less than 50D, the durability may be reduced, and there may be a problem that the fabric may be damaged after several dyeings, and if the denier is more than 80D, it may be too stiff, which may hinder workability.

When wrapping the laminated fabric in Step 1 around a beam, the same tension must be maintained throughout the laminated fabric to prevent wrinkles from forming in the fabric.

The acid dye solution used in the second-step dyeing may be prepared by mixing an acid dye mixture, citric acid, a surfactant, and a solvent, and preferably may contain 0.001 to 20.0 wt% of the acid dye mixture, 0.5 to 5.0 wt% of citric acid, 1.5 to 3.5 wt% of the surfactant, and the remainder of the solvent among 100 wt%, and more preferably may contain 1.0 to 15.0 wt% of the acid dye mixture, 1.5 to 3.0 wt% of citric acid, 1.5 to 3.5 wt% of the surfactant, and the remainder of the solvent among 100 wt%.

Among the acid dye components, the acid dye mixture can be used by mixing 2 to 4 types of acid dyes, and specific examples thereof include YELLOW 5GN, YELLOW M, YELLOW 3RL, ORANGE GSN, RED BG, RED A-3G, RED N-3B, RED 6B, RED 3B, RED N-6G, FLAVINE 7G, BLUE M5G, T/Q BLUE M-5G, CYANINE G, CYANINE F6B, VIOLET 4BNS, VIOLET FBL, BROWN B. You can mix and use 2 to 4 types selected from: B, BROWN SBL, GREY BL, LANSSET GREY, BLACK WA, BLACK SDL, NAVY C40, and SCALET NF.

As a preferred example, the acid dye mixture may be used by mixing YELLOW 5GN, a leveling dye, CYANINE G, and BLACK WA, a milling dye, and preferably, YELLOW 5GN, CYANINE G, and BLACK WA may be mixed in a weight ratio of 1:13.0 to 15.0:0.2 to 0.6.

In addition, the acid dye mixture may be used by mixing YELLOW M, CYANINE G, and Gray BL, and preferably, a mixture of YELLOW M, CYANINE G, and Gray BL in a weight ratio of 1:0.50 to 1.00:1.1 to 1.8 may be used.

In addition, the acid dye mixture may be used by mixing RED BG, BLUE M5G, and CYANINE F68, and preferably, RED BG, BLUE M5G, and CYANINE F68 may be used in a weight ratio of 1:0.50 to 1.00:15.0 to 20.0.

In addition, the acid dye mixture may be used by mixing YELLOW M, VIOLET 48NS, RED 3G, and GREY BL, and preferably, YELLOW M, VIOLET 48NS, RED 3G, and GREY BL may be used by mixing them in a weight ratio of 1:4.00 to 6.00:12.0 to 15.0:2.00 to 4.00.

In addition, the acid dye mixture may be used by mixing 2 to 4 kinds selected from among YELLOW 2GN, a leveling dye, CYAN G, BLACK SDL, and ORANGE GSN, which are milling dyes.

In addition, if the content of the acid dye mixture in 100 wt% of the acid dye solution is less than 0.001 wt%, the amount used may be too little, resulting in the color of the dyed area not being vivid and the dyeing fastness being significantly insufficient, and if it exceeds 20.0 wt%, there may be an uneconomical problem due to excessive use.

Among the acid dye components, the citric acid has no odor, does not have a significant effect on the human body, and plays a role in controlling the pH of the acid dye. In addition, if the citric acid content of 100 wt% of the acid dye is less than 0.5 wt% or more than 5.0 wt%, the acid dye may deviate from the appropriate pH of 3 to 5, so it is appropriate to use it within the above range. In addition, it is appropriate to use a citric acid aqueous solution having a concentration of 50 to 60 volume%.

Among the components of the acid dye solution, the surfactant plays a role in increasing dyeing uniformity and compatibility with other compositions, and a general surfactant used in the art can be used, and preferably, polyoxyethylene alkyl amine ether can be used. In addition, if the content of the surfactant is less than 1.5 wt% of the acid dye solution, the amount used may be too little and the effect of resolving uneven dyeing caused by its use may be insufficient, and if it exceeds 3.5 wt%, a residue may remain on the dyed fabric, which may cause trouble with the agent and softener in the tenter process of the post-processing, so it is appropriate to use it within the above range. In addition, it is appropriate to use a surfactant aqueous solution having a concentration of 30 to 40 wt%.

In addition, the acid dye solution may further use an additive including at least one selected from a leveling agent, a penetrating agent, and a pH adjusting agent, and preferably may further include at least one selected from a leveling agent and a pH adjusting agent.

And, in case of performing the second-stage dyeing treatment with an acid dyeing solution, the second-stage dyeing treatment can be performed by a process including: step 2-1 of adding an acid dyeing solution to the dyeing tank at 15 to 30°C; step 2-2 of increasing the temperature inside the dyeing tank to 85 to 95°C at a rate of 1.3 to 1.8°C/min; and step 2-3 of performing the dyeing treatment at 85 to 95°C for 20 to 40 minutes, and then adding cold water to perform the cooling treatment.

And, it is preferable to adjust the pH of the acid dye solution of step 2-1 to be pH 2 to 5, preferably pH 3.0 to 4.2, and then perform the steps 2-2 and 2-3.

At this time, if the temperature increase speed of step 2-2 is less than 1.3℃/min, there may be a slipage problem, which causes damage to the fabric, making it thin or the structure distorted, and if it exceeds 1.8℃/min, there may be a dyeing unevenness problem. In addition, the temperature during dyeing is 85 to 95℃, preferably 88 to 93℃. If the dyeing temperature is less than 85℃ or the dyeing time is less than 20 minutes, there may be a dyeing unevenness problem, and if it exceeds 95℃ or the dyeing time exceeds 40 minutes, there may be a problem of causing damage to the fabric. Therefore, it is appropriate to perform dyeing with an acidic dye solution under the above temperature and time.

Next, the reactive dye solution of step 2 comprises a reactive dye mixture, Na ₂ CO ₃ , NaCl, citric acid and a solvent, preferably comprises 0.001 to 20.0 wt% of the reactive dye mixture, 1.0 to 4.0 wt% of Na ₂ CO ₃ , 4.0 to 10.0 wt% of NaCl, 0.5 to 4.0 wt% of citric acid and the remainder of the solvent among 100 wt%, and more preferably comprises 15.0 to 35.0 wt% of the reactive dye mixture, 1.5 to 3.5 wt% of Na ₂ CO ₃ , 4.5 to 6.0 wt% of NaCl, 0.5 to 1.5 wt% of citric acid and the remainder of the solvent among 100 wt%.

The above reactive dye mixture may include two or more selected from YELLOW 4GL, YELLOW D-3RN, ORANGE S2RN 4GL, BLUE R, RED D3B, RED RB, T BLUE G, BLUE BRF, NAVY BLUE DSBN, and BLACK2RX.

As a preferred embodiment, the reactive dye mixture may be a mixture of YELLOW D3RN , RED D3B, and NAVY BLUE DSBN, and preferably, YELLOW D3RN, RED D3B, and NAVY BLUE DSBN may be mixed in a weight ratio of 1:0.10 to 0.30:0.05 to 0.15.

In addition, if the content of the reactive dye mixture is less than 0.001 wt% among 100 wt% of the reactive dye solution, the dye content may be too low and the dyeing process may not be sufficiently performed, and if it exceeds 20.0 wt%, it is excessive use, and there may be a problem of reduced wash fastness, so it is appropriate to use it within the above range.

Among the above reactive dye solution components, the Na ₂ CO ₃ plays a role in controlling pH, and when used in an amount of less than 1.0 wt% of 100 wt% of the reactive dye solution, there may be a problem of uneven dyeing, and when used in an amount of more than 4.0 wt%, there may be a problem of interfering with color dyeing.

Among the above reactive dye components, the NaCl acts as a leveling agent that allows the dye to slowly permeate the dyeing material. If it is used in an amount of less than 4.0 wt% of 100 wt% of the reactive dye, there may be a problem of staining occurring, and if it exceeds 10.0 wt%, there may be a problem of hindering dyeing properties.

Among the above reactive dye components, the citric acid plays a role in controlling pH. If the citric acid content is less than 0.5 wt% or more than 4.0 wt%, the pH range of the acid dye may be exceeded, so it is appropriate to use it within the above range. In addition, it is appropriate to use a citric acid aqueous solution having a concentration of 50 to 60 volume%.

And, in case of performing the second-stage dyeing treatment with a reactive dyeing solution, the second-stage dyeing treatment can be performed by a process including: step 2-1 of injecting the reactive dyeing solution into the dyeing tank at 15 to 30°C; step 2-2 of increasing the temperature inside the dyeing tank to 95 to 110°C at a rate of 0.6 to 1.2°C/min; and step 2-3 of performing the dyeing treatment at 95 to 110°C for 120 to 200 minutes, and then performing the cooling treatment by injecting cold water.

And, it is preferable to adjust the pH of the reactive dye solution of step 2-1 to about pH 5 to 7, preferably about pH 5.8 to 6.5, and then perform the steps 2-2 and 2-3.

At this time, if the temperature rise rate of step 2-2 is less than 0.6℃/minute, or if the temperature rise rate of step 2-2 is less than 1.3℃/minute, there may be a slipage problem, which is a phenomenon in which the fabric is damaged and becomes thin or the structure becomes distorted. If it exceeds 1.2℃/minute, there may be a dyeing unevenness problem.

And, the temperature during dyeing treatment is 95 to 110℃, preferably 98 to 103℃. If the dyeing treatment temperature is lower than 95℃ or the dyeing treatment time is lower than 120 minutes, there may be a problem of uneven dyeing, and if it exceeds 110℃ or the dyeing treatment time exceeds 40 minutes, there may be a problem of causing damage to the fabric. Therefore, it is appropriate to perform dyeing treatment with an acid dye solution under the above temperature and time.

The woven fabric manufactured by performing the two-step dyeing process described above may additionally undergo a tenter process (heat treatment), a shrink-proofing process, and a tumble process (a process that damages the surface to create a soft feel, w/washed, s/washed).

The silk fabric of the present invention, dyed using the method described above, has excellent dyeing uniformity and fastness (fastness to sweat, water, and sunlight), and thus can provide a silk fabric product with excellent marketability while increasing dye usage efficiency.

Hereinafter, the present invention will be described more specifically through examples. However, the following examples do not limit the scope of the present invention, and should be interpreted as helping to understand the present invention.

[Example]

Preparation Example 1-1: Preparation of acid dye solution

An acid dye mixture was prepared by mixing YELLOW 5GN, a leveling dye, CYANINE G, and BLACK WA, a milling dye, in a weight ratio of 1:14.6:0.4.

Then, 11.3 wt% of the acid dye mixture, 2 wt% of citric acid, 2 wt% of polyoxyethylene alkyl amine ether aqueous solution (trade name: Ethomeem C-25) having a concentration of 3.5 wt% as a surfactant, and the remaining amount of water (solvent) out of 100 wt% were mixed to prepare an acid dye solution. At this time, since the acid dye mixture is a solid, it was used after being sufficiently dissolved by directly adding steam to a small amount of water and then converted to a liquid state.

Preparation Example 1-2

An acid dye solution was prepared in the same manner as in Preparation Example 1-2 above, but the acid dye mixture was used by mixing YELLOW M, CYANINE G, and Grey BL in a weight ratio of 1:0.78:1.4, and an acid dye solution was prepared with the composition shown in Table 1 below.

Preparation Example 1-3

An acid dye solution was prepared in the same manner as in Preparation Example 1-2 above, but an acid dye mixture of RED BG, BLUE M5G, and CYANINE F68 was used in a weight ratio of 1:0.8:18.0, and an acid dye solution was prepared with a composition as shown in Table 1 below.

Preparation Example 1-4

An acid dye solution was prepared in the same manner as in Preparation Example 1-2 above, but the acid dye mixture was used by mixing YELLOW M, VIOLET 48NS, RED 3G, and GREY BL in a weight ratio of 1:5.14:14.0:3.14, and an acid dye solution was prepared with the composition shown in Table 1 below.

Preparation Example 1-5 and Comparison Preparation Example 1-1 to 1-3

An acid dye solution was prepared in the same manner as in Preparation Example 1-1, but the compositions were changed as shown in Table 1 below to prepare each acid dye solution, and Preparation Example 1-5 and Comparative Preparation Examples 1-1 to 1-3 were performed, respectively.

division Preparation
1-1 Preparation
1-2 Preparation
1-3 Preparation
1-4 Preparation
1-5 comparison
Preparation
1-1 comparison
Preparation
1-2 comparison
Preparation
1-3 Acid dye mixture 11.3
weight% 10.6
weight% 12.4 wt% 9.3
weight% 11.3
weight% 20.8
weight% 11.3
weight% 11.3
weight% Citric acid 2
weight% 2
weight% 2
weight% 2
weight% 2
weight 2
weight% 2
weight% 2
weight% Surfactant 2 wt% 2
weight% 2
weight% 2
weight% 3.2
weight% 2
weight% 1.2
weight% 4.0
weight% menstruum Remaining amount out of 100% by weight

Preparation Example 2-1: Preparation of reactive dye solution

A reactive dye mixture was prepared by mixing YELLOW D3RN , RED D3B, and NAVY BLUE DSBN in a weight ratio of 1:0.15:0.11.

Then, 10.2 wt% of the reactive dye mixture, 2 wt% of Na ₂ CO ₃ , 5 wt% of NaCl, 1 wt% of citric acid, and the remaining amount of water among 100 wt% were mixed to prepare a reactive dye solution (pH 8 to 9). At this time, since the reactive dye mixture is a solid, it was used after being sufficiently dissolved by directly adding steam to a small amount of water and then converted to a liquid state.

Preparation examples 2-2 to 2-3 and comparison preparation examples 2-1 to 2-3

A reactive dye solution was prepared in the same manner as in Preparation Example 2-1, but the compositions were changed as shown in Table 2 below to prepare each reactive dye solution, and Preparation Examples 2-2 to 2-3 and Comparative Preparation Examples 2-1 to 2-3 were performed, respectively.

division Preparation
2-1 Preparation
2-2 Preparation
2-3 Comparison Preparation Example
2-1 Comparison Preparation Example
2-2 Comparison Preparation Example
2-2 Reactive dye mixture 10.2 wt% 10.2 wt% 10.2 wt%% 21.1 wt% 10.2 wt%% 10.2 wt%% Na ₂ CO ₃ 2 wt% 2 wt% 2 wt% 2 wt% 2 wt% 2 wt% NaCl 5 wt% 4.1 wt% 8.0 wt% 5 wt% 2.0 wt% 10.3 wt% Citric acid 1 wt% 1 wt% 1 wt% 1 wt% 1 wt% 1 wt% menstruum Remaining amount out of 100% by weight

Example 1-1: Beam dyeing treatment of silk fabric using acid dye solution

The silk fabric and polyester fabric were evenly wrapped around a beam while being combined. At this time, the silk fabric and polyester fabric were wrapped around the beam while maintaining the same tension and spreading them out well so that no wrinkles were formed in the fabric.

The above woven fabric is satin weave. It was 19mm and 54" wide.

The above polyester fabric was manufactured using polyester monofilament 75D X 75D yarn, woven on a loom, and subjected to 8% shrinkage refinement.

Next, the acid dye solution prepared in the above Preparation Example 1-1 was injected into the dyeing tank of the beam dyeing machine, and the laminated fabric wound around the beam was injected into the dyeing tank. At this time, the acid dye solution in the dyeing tank was adjusted to have a pH of approximately 3.6 to 3.9, and then the laminated fabric was injected.

Next, the temperature inside the dyeing tank was increased from 25℃ to 90℃ at a rate of 1.5℃/min, and dyeing treatment was performed for 30 minutes while maintaining 90℃, after which cold water was added for cooling treatment to produce a dyed silk fabric.

A photograph of the dyed woven fabric is shown in Figure 1.

Examples 1-2 to 1-5 and Comparative Examples 1-1 to 1-3

Silk fabrics were dyed using an acid dye solution in the same manner as in Example 1-1, but instead of the acid dye solution of Preparation Example 1-1, acid dye solutions prepared in Preparation Examples 1-2 to 1-5 and Comparative Preparation Examples 1-1 to 1-3 were used to produce silk fabrics dyed in each case, and Examples 1-2 to 1-5 and Comparative Examples 1-1 to 1-3 were performed, respectively.

Example 2-1: Beam dyeing treatment of silk fabric using acid dye solution

The silk fabric and polyester fabric were evenly wrapped around a beam while being combined. At this time, the silk fabric and polyester fabric were wrapped around the beam while maintaining the same tension and spreading them out well so that no wrinkles were formed in the fabric.

The above woven fabric is satin weave. It is 19mm and 54" wide.

The above polyester fabric was manufactured using polyester monofilament 75D X 75D yarn, woven on a loom, and subjected to 8% shrinkage refinement.

Next, the reactive dye solution prepared in Preparation Example 2-1 was injected into the dyeing tank of the beam dyeing machine, and the laminated fabric wound around the beam was injected into the dyeing tank. At this time, the reactive dye solution in the dyeing tank was adjusted to have a pH of approximately 6.0 to 6.3, and then the laminated fabric was injected.

Next, the temperature inside the dyeing tank was increased from 25℃ to 100℃ at a rate of 1.0℃/min, and dyeing treatment was performed for 180 minutes while maintaining 100℃, after which cold water was added to perform cooling treatment, thereby manufacturing a dyed silk fabric.

A photograph of the dyed woven fabric is shown in Figure 2.

Examples 2-2 to 2-3 and Comparative Examples 2-1 to 2-3

Silk fabrics were dyed using a reactive dye solution in the same manner as in Example 2-1, but instead of the reactive dye solution of Preparation Example 2-1, reactive dye solutions prepared in Preparation Examples 2-2 to 2-3 and Comparative Preparation Examples 2-1 to 2-2 were used to produce dyed silk fabrics, respectively, so that Examples 2-2 to 2-3 and Comparative Examples 2-1 to 2-2 were performed.

Dyed silk fabric Acid dye solution Dyed rayon reactive dye solution Example 1-1 Preparation Example 1-1 Example 2-1 Preparation Example 2-1 Example 1-2 Preparation Example 1-2 Example 2-2 Preparation Example 2-2 Example 1-3 Preparation Example 1-3 Example 2-3 Preparation Example 2-3 Example 1-4 Preparation Example 1-4 - - Example 1-5 Preparation Example 1-5 - - Comparative Example 1-1 Comparison Preparation Example 1-1 Comparative Example 2-1 Comparison Preparation Example 2-1 Comparative Example 1-2 Comparison Preparation Example 1-2 Comparative Example 2-2 Comparison Preparation Example 2-2 Comparative Example 1-3 Comparison Preparation Example 1-3 Comparative Example 2-3 Comparison Preparation Example 2-3

Experimental Example 1: Measurement of the presence of harmful substances in dyed silk fabrics

The presence of hazardous ingredients in the dyed silk fabrics manufactured in Examples 1-1 and 2-1 was requested to KOTITI (September 7, 2023).

The content of arylamine (mg/kg) and formaldehyde in the acid dye-treated silk fabric of Example 1-1 was measured according to KS K 0147:2015 and KS K 0739:2017, and the results are shown in Fig. 3b and Fig. 3c.

In addition, the content of arylamine (mg/kg) and formaldehyde in the reactive dye-treated woven fabric of Example 2-1 was measured according to KS K 0147:2015 and KS K 0739:2017, and the results are shown in Fig. 4b and Fig. 4c.

Looking at the results of the trending ingredients in Figs. 3b and 4b, it was confirmed that it did not contain human-harmful ingredients such as arylamine and formaldehyde.

Experimental Example 2: Fastness Measurement

The color fastness to sweat and light (grade, AATCC 125:2013), color fastness to sweat (AATCC 15:2013), and color fastness to water (AATCC 107:2013) of the dyed silk fabrics of the examples and comparative examples were measured, and the results are shown in Tables 4 and 5 below.

division Silk fabric dyed with acid dye pH Sweat, sunlight combined fastness Sweat fastness Washing fastness Acidic Alkaline Acidic Alkaline Example 1-1 4.2 4-5 4-5 4-5 4-5 4-5 Example 1-2 4.5 4-5 4 4-5 4 4-5 Example 1-3 4.1 4-5 4-5 4-5 4-5 4-5 Example 1-4 4.6 4 4-5 4-5 4-5 4 Example 1-5 4.2 4-5 4-5 4-5 4-5 4-5 Comparative Example 1-1 4.1 4-5 4 4-5 4-5 4-5 Comparative Example 1-2 4.2 4 4 4 4-5 4 Comparative Example 1-3 4.2 4-5 3-4 4-5 3-4 4-5

Looking at the fastness measurement results in Table 4, it was confirmed that the silk fabrics dyed with the acid dyes of Examples 1-1 to 1-5 had an overall excellent fastness of Grade 4, preferably Grade 4-5.

In contrast, in the case of Comparative Example 1-1 using the dye of Comparative Preparation Example 1-1, which used more than 20 wt% of the acid dye mixture in the acid dye solution, similar fastness was shown overall when compared to Example 1-1, etc., and rather, a somewhat lower result was shown in terms of the sunlight complex fastness.

In addition, in the case of Comparative Example 1-2 using the dye of Comparative Preparation Example 1-2, which used less than 1.5 wt% of surfactant in the acid dye solution, there was a problem of uneven dyeing, resulting in a high defect rate.

In addition, in the case of Comparative Example 1-3 using the dye of Comparative Preparation Example 1-3, which used 4.0 wt%, which is more than 3.5 wt% of the surfactant in the acid dye solution, there was a problem that the fastness was lowered, and there was a problem that the residue remained on the dyed fabric, causing trouble with the agent and the softener in the tenter process of the post-processing.

division Silk fabric dyed with reactive dyes pH Sweat, sunlight combined fastness Sweat fastness Washing fastness Acidic Alkaline Acidic Alkaline Example 2-1 6.0 4-5 4-5 4-5 4-5 4-5 Example 2-2 6.1 4 4-5 4-5 4-5 4-5 Example 2-3 6.0 4-5 4 4-5 4 4 Comparative Example 2-1 6.1 4-5 4-5 4-5 4-5 4-5 Comparative Example 2-2 6.2 3-4 4 3-4 3-4 3 Comparative Example 2-3 5.9 3-4 4 3-4 4-5 3-4

Looking at the fastness measurement results in Table 5, it was confirmed that the silk fabrics dyed with the reactive dyes of Examples 2-1 to 2-3 had an overall excellent fastness of Grade 4, preferably Grade 4-5.

However, in the case of Comparative Example 2-1 using the dye of Comparative Preparation Example 2-1, which used more than 20 wt% of the reactive dye mixture in the acid dye solution, similar fastness was observed overall when compared to Example 2-1, etc., and there was no advantage in terms of fastness due to the use of excessive dye.

In the case of Comparative Example 2-2, which used the dye solution of Comparative Preparation Example 2-2 in which NaCl was used at 2.0 wt%, which is less than 4.0 wt%, the overall fastness was lowered compared to Examples 2-1 and 2-2, and there was a problem of staining occurring on the fabric.

In addition, in the case of Comparative Example 2-3 using the dye solution of Comparative Preparation Example 2-3 using 10.3 wt%, which is more than 10.0 wt% of NaCl, the overall light fastness, sweat fastness, and washing fastness to acid were rather lowered compared to Examples 2-1 and 2-3, and this is because the excessive amount of NaCl interferes with the dyeing properties of the reactive dye on the fabric.

Claims (10)

Step 1: Evenly wrapping the woven fabric and polyester fabric on a beam while combining them; and
The process includes a second step of putting the laminated fabric wrapped around a beam into the dyeing tank of a beam dyeing machine and then performing a dyeing process;
An acid dye solution or a reactive dye solution is added to the above dyeing tank,
A method for dyeing a silk fabric, characterized in that the above polyester fabric is a fabric woven from polyester yarn having a fineness of 70 to 80D (denier).
A method for dyeing a woven fabric, characterized in that in claim 1, the polyester fabric is a fabric that is not dyed with acid dyes or reactive dyes.
A method for dyeing a silk fabric, characterized in that in claim 1, the acid dye solution comprises an acid dye mixture, citric acid, a surfactant, and a solvent.
A method for dyeing a silk fabric, characterized in that in claim 1, the acid dye solution contains 0.001 to 20 wt% of an acid dye mixture, 0.5 to 5.0 wt% of citric acid, 1.5 to 3.5 wt% of a surfactant, and 100 wt% of a solvent as the remainder.
In the third paragraph, the acid dye mixture includes at least two selected from among YELLOW 2GN, a leveling dye, CYAN G, BLACK SDL, and ORANGE GSN, which are milling dyes.
A method for dyeing a silk fabric, characterized in that the surfactant comprises polyoxyethylene alkyl amine ether.
A method for dyeing a silk fabric, characterized in that in claim 5, it further comprises at least one additive selected from a leveling agent, a penetrating agent and a pH regulator.
In the first paragraph, the reactive dye solution
A method for dyeing a silk fabric, characterized in that it comprises 0.001 to 20.0 wt% of a reactive dye mixture, 1.0 to 4.0 wt% _{of Na2CO3} , 4.0 to 10 wt% of NaCl, 0.5 to 4 wt% of citric acid and 100 wt% of a solvent as the balance.
In the first paragraph, when dyeing with an acid dye, the second stage of dyeing is
Step 2-1: adding acid dyeing solution to the dyeing tank at 15 to 30℃;
Step 2-2: Raising the temperature inside the dyeing tank to 85 to 95°C at a rate of 1.3 to 1.8°C/min; and
A dyeing method for a silk fabric, characterized in that it is performed in a process including 2-3 steps of dyeing at 85 to 95℃ for 20 to 40 minutes, and then cooling by adding cold water.
In the first paragraph, when dyeing is performed with a reactive dye, the second stage of dyeing is
Step 2-1: adding a reactive dye solution to the dyeing tank at 15 to 30℃;
Step 2-2: Raising the temperature inside the dyeing tank to 95 to 110℃ at a rate of 0.6 to 1.2℃/min; and
A dyeing method for a silk fabric, characterized in that it is performed in a process including 2-3 steps of dyeing at 95 to 110℃ for 120 to 200 minutes, and then cooling by adding cold water.
A silk fabric dyed using any one of the methods selected from claims 1 to 9.