JPH10280276A - Dyeing of cellulosic fiber cloth, and cellulosic fiber cloth dyed by the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily carry out a special dyeing such as iridescent, multicolor, light and shade, deep and core-white dyeing by dyeing a fabric by a vinylsulfone- based reactive dye and thereafter carrying out a biological treatment and reduction treatment, and further dyeing the treated fabric with a reactive dye. SOLUTION: A cellulosic fiber fabric is dyed with a vinylsulfone-based reactive dye. The dyed fabric is subjected to a biological treatment with an enzyme such as cellulase and decoloring treatment with a reductant such as Senkafrost, and further is dyed with the reactive dye. Even when the fabric is a raised fabric, the required dyeing is readily carried out by a small lot of many kinds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dyeing a cellulosic fiber cloth and a cellulosic fiber cloth dyed by the method. TECHNICAL FIELD The present invention relates to a dyeing method for performing required dyeing such as tones, different color tones, and dark and light color tones of the same color, and a cellulosic fiber cloth dyed by the method.

[0002]

2. Description of the Related Art Conventionally, when dyeing the above-mentioned iridescent color tone, different color tone, light and shade color tone, etc., usually, a dyeing method, a dyeing speed, a dye, and the like at a stage of fiber cotton or yarn before weaving as a fiber fabric or cloth. It is known that fiber fabrics or yarns differing in the degree of coloring are selected in advance, the fiber fabric is woven, the fiber fabric or cloth is dyed, and a desired color tone is dyed.

[0003] However, in order to obtain a different color tone, fiber yarns of different dyeing methods are used to obtain a fiber fabric by twisting, weaving, and knitting, and then the fabric is made into a fabric and dyed in another color of a different dyeing method. It is to be dyed, and it takes a long preparation step such as selecting from the yarn stage before dyeing, weaving and dyeing, and has a problem that the process of obtaining a required dyed fabric or fabric from the yarn is complicated. Was.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to select a fiber cotton according to a dyeing condition from a stage prior to forming a fiber fabric or a cloth, and blend or spin the fiber cotton. Eliminates the need for cross-twisting, cross-weaving, and cross-knitting, and also eliminates the need for a napping process, turns the fiber cloth made of cellulosic fiber yarn into a fabric by washing, and performs the required dyeing only by post-processing. It is another object of the present invention to provide a dyeing method capable of easily dyeing the above-mentioned iridescent color tone, different color tone, and light and light color tone, and a cellulosic fiber cloth dyed by the dyeing method.

[0005]

SUMMARY OF THE INVENTION The present invention provides a physicochemical treatment in which a cellulosic fiber is subjected to biotreatment with an enzyme or the like to increase the dyeing speed of the fiber surface and to perform a deep dyeing by biotreatment and reduction treatment. Focus on
By combining the dyeing process with a reactive dye, the physicochemical treatment process with biotechnology, and the decolorizing process with a reducing agent on the fiber cloth, the color tone difference of dyeing is large and fast, and various special effects are obtained. This was done based on the experimental results that

[0006] In order to achieve the above object, the present invention provides a first dyeing step of dyeing a cellulosic fiber cloth with a vinyl sulfone-based reactive dye, and a physicochemical treatment step of bioprocessing using an enzyme. And a second dyeing step of dyeing a cloth or the like decolorized with a reducing agent such as Senkafrost into a required color.

[0007] Instead of the physicochemical treatment step, a decolorizing treatment with a reducing agent may be performed, and then a second dyeing step with a reactive dye may be performed. Alternatively, instead of the physicochemical treatment step or the decolorizing step with a reducing agent, washing with a hot water washer is performed, and then a second dyeing step with a reactive dye is performed. Is obtained (claim 7). Further, the physicochemical treatment may be performed before or after the dyeing step with a reactive dye, and thereafter, a coloring step with a reducing agent may be performed.

In order to achieve the above object, the present invention also provides a first dyeing step of dyeing a cellulosic fiber cloth with a sulfone-based reactive dye, a physicochemical treatment step of bio-treatment, and a reduction process such as frost. A method for dyeing a cellulosic fiber cloth, comprising: a decolorization step of decolorizing with an agent; and, after the completion of these three steps, a second dyeing step of dyeing with a sulfone dye of the same color or a different color as the first dyeing step. , Provided in claim 8.

In the case where the first dyeing step and the second dyeing step are performed twice, the following two patterns can be adopted. (1) After the completion of the first dyeing step, a physicochemical treatment step is performed, then a decolorizing step using a reducing agent is performed, and finally, a second dyeing step is performed in a different color from the first dyeing step to obtain a different color tone or The beetle color is dyed (claim 8). (2) After the first dyeing step is performed, the reducing agent treatment step is performed, and then the second dyeing step is performed in the same color as the first dyeing step to perform dark and light color dyeing (claim 3).

[0010] The present invention further provides the above object.
9. The method according to claim 8, wherein a first dyeing step of dyeing the cellulosic fiber cloth with a sulfone-based reactive dye, a physicochemical treatment step of performing a biotreatment, a decolorization step of decolorizing with a reducing agent such as frost, The present invention provides a method for dyeing a cellulosic fiber cloth, comprising: a physicochemical treatment step for treating; and, after the above four steps, a second dyeing step of dyeing with the same color or a sulfone dye as the first dyeing step. .

[0011] The above-mentioned cellulosic fiber cloth is made by fabricating a fiber cloth woven mainly of the same kind of fiber yarn by washing (hot water washer treatment), and the above-mentioned fiber cloth is made of viscose polynosic, cupra and Tencel. It is composed of a cellulose fabric or knit (claim 9).
The cellulosic fiber can be dyed with the above-mentioned iridescent color tone, different color tone, dark and light color tone, etc. on a fabric or cloth woven with the same type of fiber yarn. Of course, the above-mentioned dyeing of various colors can be applied to a fabric or a cloth made of mixed spinning, cellulosic fiber yarn, twisting, weaving and knitting.

According to the present invention, there is further provided a fabric or cloth treated by the method of claim 1 or claim 4 or 6, which is dyed in an iridescent tone, a different tone, a light and shade tone, or a core white tone. The present invention provides a cellulosic fiber cloth which has been obtained (claim 10). The fiber cloth is made of cotton or hemp, or a regenerated cellulose cloth or knit from viscose, polynosic, cupra, tencel, or the like.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples. "Example 1" In the example, a first dyeing step → a physicochemical treatment step by biotreatment → a decolorizing step with a reducing agent → second dyeing for a regenerated cellulosic fiber cloth composed of Tencel as a warp and polynosic as a weft. By performing the process, the beetle color was dyed. Specifically, the warp tencel count 201-, the density of 110 yarns / inch, the weft polynosic count 201-, the density of 74 yarns / inch, and the cloth structure 3/1
Was prepared, and in the first step, the woven fabric was desized by a conventional method. In the second step, the reactive dye Remazol Black DEN, which is a vinyl sulfone dye, was dyed with a ASAHI BS type washer at a dye concentration of 10% owf in a bath ratio of 1:30 and a dyeing temperature of 60 ° C. for a dyeing time of 50 minutes by a conventional method. By the dyeing in the first dyeing step, the fiber cloth was dyed in a single black color.

In a third step, the cloth dyed in the first dyeing step is put into an ASAHI BS type hot water washer, and water is added so that the bath ratio becomes 1:50. The cloth treated with an enzyme concentration of 5 to 5.5 PH, a temperature of 50 ° C., 2 cc / l of the enzyme cellulase, and a conventional treatment (biotreatment step) for 60 minutes was dried for 15 minutes by a tumbler dryer. 10 g / l is added to ASAHI BS type washer and water containing the sulfur-containing reducing agent Sengkafrost CM-5 at a bath ratio of 1:50 to the rare weight. The hot water temperature was set to 90 ° C. to 95 ° C., and the treatment was performed for 30 minutes (frost treatment step).

The cloth dried in the tumbler dryer in the fourth step was measured by a color management system COMSEKN (manufactured by Nippon Kayaku Co., Ltd.) and a spectrophotometer Macbeth 2020+. As a result, the lightness L was L = 23 with the sample name BF. .8
8 was obtained (see Table 1).

[0016]

[Table 1] Lightness L, cloth material before the second dyeing process (light source standard D65)

A group not subjected to the reducing agent treatment, in which the lightness L of the cloth (FF) subjected to the reducing agent treatment twice is the highest, followed by the lightness L of the group (BF) subjected to the reducing agent treatment once. The brightness L of (B) is the lowest. W was obtained by washing the cloth sample, B was obtained by bioprocessing, and F was obtained by processing the reducing agent.

As a fifth step, a second dyeing step with a reactive dye is performed, and the reactive dye Sumifix Supra is prepared with a K-MIN type washer (manufactured by Shinzen Tekko Co., Ltd.).
Brilliant Red BSF150 concentration
The cells were stained red at 3.5% owf according to a conventional method. Color management system for fabric dried with tumbler dryer COMS
It was measured with an EKN spectrophotometer Macbeth 2020+ (see Table 2).

[0019]

[Table 2] Sumfix Supra Brilliant R
ed Fabric sample re-stained with BSF150 (light source standard D
65)

The group not subjected to the reducing agent treatment has the highest lightness L of the cloth (FF) subjected to the reducing agent treatment twice, followed by the lightness L of the group (BF) subjected to the reducing agent treatment once. The brightness L of (B) is the lowest.

As a sixth step, similarly to the fifth step, a second dyeing step using a reactive dye is performed, and the K-MIN
Sumifix Yellow, a reactive dye with a mold washer
The w3RF was dyed yellow at a concentration of 3.5% owf in a conventional manner, and the cloth dried with a tumbler dryer was subjected to a color management system COMSEKN and a spectrophotometer Macbeth 2020.
+ Was measured (see Table 3).

[0022]

[Table 3] Cloth sample re-stained with Sumfix Yellow 3RF (Light source standard D65)

The group not subjected to the reducing agent treatment, in which the lightness L of the cloth (FF) subjected to the reducing agent treatment twice is the highest, followed by the lightness L of the group (BF) subjected to the reducing agent treatment once, The brightness L of (B) is the lowest.

[0024]

[Table 4] Visible light (20 NM from 400 NM to 700 NM)
Reflectance), cloth sample before the second dyeing process.

The fourth step after the decolorizing step with the reducing agent was defined as a second dyeing step. In the second staining step, fibrils generated in the biotreatment step were easily stained by the decolorization step. Therefore, the dyeing in the second dyeing step was superimposed on another color tone dyed in the first dyeing step, and the surface of the fiber cloth was dyed dark.

In the fiber fabric dyed as described above, the fibrils are so fine that they cannot be seen when viewed from the surface when dyed with a light color, but the color of the fibrils can be seen when the angle of the light beam changes obliquely. This color is an iridescent color. This was confirmed by the reflectance of visible light. Table 4 shows the visible light reflectance of the cloth sample before the second dyeing step.

Table 5 Sample name B
It becomes like the table of FR. Visible light wavelength 4 of sample BFR
Reflectance R (BFR) 40 on the original cloth at 00 nm
Set to 0. R (BFR) 700−R (BFR) 400 =
12.29. In the fourth step, it was observed that the decolorized portion was stained red.

[0028]

[Table 5] Sumfix Supra Brilliant R
ed Fabric sample dyed in the second dyeing step with BSF150.

The reflectance is high at all wavelengths of visible light with respect to the cloth which has been treated twice with the reducing agent. This is followed by the high reflectance of all wavelengths of visible light for the group of fabrics that have been treated once with the reducing agent. The reflectance is low at all wavelengths of visible light in the group not subjected to the reduction treatment.

[0030]

[Table 6] Cloth sample restained with Sumfix Supra Yellow 3RF.

The reflectance is high at all wavelengths of visible light with respect to the cloth treated twice with the reducing agent. This is followed by the high reflectance of all wavelengths of visible light for the group of fabrics that have been treated once with the reducing agent. The reflectance is low at all wavelengths of visible light in the group not subjected to the reduction treatment.

"Example 2" The first dyeing step using the same fiber cloth as in Example 1, a cloth of the same density, a yarn of the same count, and a cloth of the same structure →
By performing a decolorizing step with a reducing agent → a physicochemical step by biotreatment → a second dyeing step, the iridescent color was dyed. First step Same as in the first embodiment Second step Same as in the first embodiment Third step Frost treatment Fourth step Bioprocessing Fifth step Same as in the first embodiment A cloth dried by a tumbler dryer is subjected to a color management system.
COMSEKN, measured with a spectrophotometer Macbeth 2020+. Table 5 Sample name FBR
It becomes like the table of. R (FBR) 700-R (FBR) 400 = 11.65 An iridescent cloth was obtained.

Example 3 The first dyeing process using the same fiber cloth as in Example 1, a cloth of the same density, a yarn of the same count, and a cloth of the same structure →
Hot water treatment → decoloring step with a reducing agent → second dyeing step was performed to perform iridescent coloration. First step Same as in the first embodiment Second step Same as in the first embodiment Third step Hot water treatment Fourth step Frost processing Fifth step Same as in the first embodiment A cloth dried by a tumbler dryer is subjected to a color management system.
COMSEKN, measured with a spectrophotometer Macbeth 2020+. Table 5 Sample name WFR
It becomes like the table of. R (WFR) 700-R (WFR) 400 = 12.02 An iridescent cloth was obtained.

Example 4 First dyeing step using the same fiber cloth as in Example 1, cloth of the same density, yarn of the same count, and cloth of the same structure →
By performing a decolorizing step with a reducing agent → a hot water treatment → a second dyeing step, an iridescent color tone was dyed. First step Same as in the first embodiment Second step Same as in the first embodiment Third step Frost treatment Fourth step Hot water treatment Fifth step Same as in the first embodiment A cloth dried by a tumbler dryer is subjected to a color management system.
COMSEKN, measured with a spectrophotometer Macbeth 2020+. Table 5 Sample name FWR
It becomes like the table of. R (FWR) 700-R (FWR) 400 = 11.83 An iridescent cloth was obtained.

Example 5 The first dyeing step using the same fiber cloth as in Example 1, a cloth of the same density, a yarn of the same count, and a cloth of the same structure →
A decolorizing step using a reducing agent → a second dyeing step was performed to dye the iridescent tone. First step Same as in the first embodiment Second step Same as in the first embodiment Third step Frost treatment Fourth step No processing Fifth step Same as in the first embodiment A cloth dried by a tumbler dryer is subjected to a color management system.
COMSEKN, measured with a spectrophotometer Macbeth 2020+. The reflectance in visible light is as shown in the table of Table 5, Sample name FR. R (FR) 700-R (FR) 400 = 11.88 An iridescent cloth was obtained.

Example 6 The first dyeing step using the same fiber cloth as in Example 1, a cloth of the same density, a yarn of the same count, and a cloth of the same structure →
By performing a decolorizing step using a reducing agent → a decolorizing step using a reducing agent → a second dyeing step, the iridescent color was dyed. First step Same as in the first embodiment Second step Same as in the first embodiment Third step Frost processing Fourth step Frost processing Fifth step Same as in the first embodiment A cloth dried by a tumbler dryer is subjected to a color management system.
COMSEKN, measured with a spectrophotometer Macbeth 2020+. Table 5 Sample name FFR
It becomes like the table of. R (FFR) 700-R (FFR) 400 = 15.05 A cloth with a strong iridescent color was obtained.

[0037]

As is clear from the above description, the present invention has the following effects. First, according to the dyeing method according to any one of claims 1 to 10, required dyeing can be performed on the fiber cloth by post-processing, and at a yarn stage or a blending stage before forming the fiber cloth, It is not necessary to select in advance in consideration of the mode of staining. Therefore, the preparation stage before the dyeing does not take much trouble, and the post-processing for the fiber cloth only needs to be combined with the biotreatment process, the decoloring process, and the dyeing process, and the number of processes can be reduced. In this way, the required dyeing can be easily performed simply by post-processing the fiber cloth, and with a small number of steps.
Special dyeing such as iridescent color tone, different color tone, light and light color tone, dark color tone, and core white tone can be efficiently performed for small lots and many kinds.

Further, there has been proposed a method of dyeing a dark-colored fiber cloth raised with synthetic fibers, wool, silk, or the like. However, cellulosic fiber cloths, particularly regenerated cellulose such as Tencel, are proposed. About system fiber cloth,
No method has been provided for performing the required dyeing such as iridescent tone on the biotreated fiber cloth. According to the dyeing method of the present invention, in particular, even in the case where the regenerated cellulose-based fiber cloth is raised to give a soft texture, the required dyeing can be performed, and furthermore, the biotreatment and the reducing agent treatment can be performed. By aggressively combining, a desired color tone can be obtained while reducing the number of steps.

Further, in the dyeing method of the present invention, it is possible to perform a tint of a light and shade color, a dark color tone, and a core white tone with a simple step of combining a single dyeing step with a biotreatment and a decolorizing step. On the other hand, in a simple step of combining the two dyeing steps with the bio-treatment step and the decoloring step, it is possible to dye the beetle color tone and the different color tone, and to dye the dark and light tone, dark tone and core white tone. Can be applied in a more specific manner.

Further, in the cellulosic fiber cloths according to the ninth and tenth aspects produced by the dyeing method according to the first to tenth aspects, various kinds of dyeing, which cannot be obtained with the conventional fiber cloths of this kind, For example, while being dyed such as iridescent color tone, different color tone, light and light color tone, dark color tone and white core tone,
If necessary, it can be dyed in a clear and dark color.

Claims (10)

[Claims] A first dyeing step of dyeing a cellulosic fiber cloth with a vinyl sulfone-based reactive dye, a bio-treatment step using an enzyme such as cellulase, a decolorizing step using a reducing agent such as senka frost, A method for dyeing a cellulosic fiber cloth, comprising performing a processing comprising a second dyeing step of dyeing with a dye, and subjecting the cloth or the like to a required dyeing. 2. The method according to claim 1, wherein the bioprocessing step is performed before the first dyeing step of dyeing with a reactive dye, after the decolorizing step with a reducing agent, or after the second dyeing step. For dyeing cellulosic fiber cloth. 3. After performing the first dyeing step, perform the biotreatment step, then perform a decolorizing step, and finally, perform a second dyeing step with the same color as the first dyeing step to obtain a light and dark tone or a dark tone. The method for dyeing a cellulosic fiber cloth according to claim 1, wherein the dyeing is performed. 4. A first dyeing step of dyeing a cellulosic fiber cloth with a vinyl sulfone dye, a washing step with a hot water washer, a decolorizing step with a Sengka frost type reducing agent, and a second step of dyeing with a reactive dye. A dyeing method for a cellulosic fiber cloth, which comprises performing a processing including a two-dyeing step and subjecting a cloth or the like to a required dyeing. 5. The method according to claim 4, wherein the washing step is performed before the first dyeing step, after the decolorizing step with a reducing agent, or after the second dyeing step. 6. A first dyeing step of dyeing a cellulosic fiber cloth with a vinyl sulfone dye, a partial decoloring step with a sulfur-containing senkafrost reducing agent, and a second dyeing step of dyeing with a reactive dye. A method for dyeing a cellulosic fiber cloth, which comprises the steps of: 7. The method for dyeing a cellulosic fiber cloth according to claim 6, wherein the partial decolorization step with the sulfur-containing senkafrost-based reducing agent is performed a plurality of times. 8. The method for dyeing a cellulosic fiber cloth according to claim 1, wherein the second dyeing step is performed in a different color from the first dyeing step, and the beetle color is dyed. 9. The above-mentioned cellulosic fiber cloth is formed by fabricating a fiber cloth woven mainly of the same kind of fiber yarn by washing (water washer treatment), and the fiber cloth is made of viscose, polynosic, cupra and tencel. The dyeing method according to any one of the preceding claims, comprising a regenerated cellulose fabric comprising: or a knitted fabric. 10. The claim 1, claim 4, and claim 6.
A cellulosic fiber cloth obtained by dyeing a bio-processed cloth with a different color tone, a light and shade color tone, etc.