JPH05140470A - Preparation of dye liquor - Google Patents

Abstract

PURPOSE:To make it possible to effect automatic color matching of a freshly prepared dye liquor to a standard dye liquor at the dye liquor preparation stage without relying on the sense or skill of the operator who prepares the dye liquor and to realize a completely continuous automatic dyeing process from the preparation of a dye liquor to the completion of dyeing. CONSTITUTION:A dye liquor or a highly concentrated stock dye liquor is irradiated with laser beams of at least one wavelength, preferably at least three wavelengths, i.e., R, G, and B, to detect the hue and concentration of the dye liquor as voltage or current values. The measurements are compared with those predetermined on a standard dye liquor used for color matching to obtain a difference in concentration between corresponding hue components by calculation and to determine the amounts of the dye liquor and a diluent to be mixed together, or the proportion of each stock dye liquor and the amount of a diluent. On the basis of these results, the preparation of dye liquor is performed and a fine adjustment is made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preparing a dyeing solution for dyeing a textile product.

[0002]

2. Description of the Related Art Conventionally, dyeing liquids used for dyeing textile products are
It is used by accurately weighing a dye supplied as a powder and dissolving a plurality of types of the dye in a mixed state to prepare a dye liquor having a desired hue and concentration.

However, when the powder dye is first weighed, an unavoidable slight difference easily occurs in the actual measured value of the powder dye due to environmental conditions, that is, differences in temperature and humidity.
Also, due to the fact that there are slight differences in the dye characteristics due to the difference in the lots of powder dyes provided, it is actually possible to prepare a dye liquor that matches the standard color required in a single liquid preparation operation. It's difficult.

Therefore, in the conventional dyeing process, the test dyeing liquor prepared as described above is used for the test dyeing in advance, and the dyeing condition is compared with that of the standard dyeing, and then the dyeing liquid is finely dyed. In general, the liquid preparation operation for preparation is repeated several times to obtain a dyeing liquid having a desired hue and concentration that match a standard color. Then, when further entering the main dyeing process, based on the data obtained by the above test dyeing, again weighing, dissolving, and preparing the solution, preliminarily carrying out the actual test dyeing, and then performing dyeing by the actual machine Is the reality.

[0005]

Therefore, in the conventional dyeing process, it takes a lot of time and labor to prepare a dyeing solution for color matching called color matching. Requires a high level of skill in dyeing toning, which is the biggest factor in preventing the automation of the dyeing process.

The main object of the present invention is to automate the entire process from receiving the powder dye to the completion of dyeing, saving labor, reducing dye loss, improving color matching accuracy, and switching dye. It is to be able to shorten the time.

Further, as a premise for achieving such an object, it is necessary to develop a method capable of automatically preparing a dye liquor having a desired hue and concentration which conforms to a standard dye liquor, and further for that purpose. This was done with the aim of developing a new colorimetric technique for dyeing liquid.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to realize the following automatic dyeing liquid preparation system for the above-mentioned purpose.

FIG. 1 attached herewith shows an outline of the dye liquor preparation system. Referring to FIG. 1, the system first dissolves a dye provided as a powder with a small amount of a solvent to obtain a liquid dye having a high concentration (liquidation). Then, the hue and density of the liquid dye are measured, that is, the color is measured, and the data obtained by this is taken into the computer (CPU) as the data for color matching at the time of dye solution preparation. Then, a plurality of types of liquid dyes which have been liquidized and color-measured in this way are respectively stored in mother liquor tanks (T ₁ ) to (Tn) as dye mother liquors, and 2 to several of these mother liquors are diluted at a predetermined mixing ratio. A diluted mixed dyeing liquid corresponding to a desired color is obtained by mixing and preparing a liquid, for example, water and an auxiliary agent.

When preparing the dye liquor, it is compared with the colorimetric data of the standard mixed dye liquor which has been obtained in advance, or with the colorimetric data of each mother liquor before mixing of the reference mixed dye. Calculate the mixing ratio of a single mother liquor or multiple kinds of mother liquor and dilution liquid by computer based on colorimetric data obtained from each liquid dye, that is, mother liquor, so that the color and concentration of the mixed dye liquor match Shall be specified.

[0011] Then, this blended solution is thoroughly mixed with a static mixer to obtain a desired mixed dyeing solution, and then the dyeing solution is subjected to color measurement for confirmation and compared with the colorimetric data of the reference mixed dyeing solution. After checking, the fiber product (F) is dyed by automatically and continuously supplying it to the actual dyeing machine (S) via the heat exchanger.

In order to prepare a dye liquor using the system as described above, first, it is necessary to realize the color measurement of a liquid concentrated high concentration dye mother liquor. However,
Conventional liquid spectrophotometers, which are generally used for color measurement of dye liquors, cannot measure liquid dyes as described above. That is, since the spectrophotometer has a weak light amount from the light source, it has only the colorimetric ability of a low concentration dyeing solution of about 0.001 to 0.05 g / l, and it can be used as a high concentration liquid dye to be used as a mother liquor. On the other hand, light cannot be transmitted and color measurement cannot be performed.

Therefore, the first aspect of the present invention is based on the development of a concentration analysis method for a dye liquor that enables color measurement of such a high concentration liquid dye, and a dyeing method utilizing this developed color measurement technique. It provides a basic method for preparing a liquid,
The step of irradiating the dye solution with laser light of at least one kind of wavelength, the step of measuring the amount of laser light transmitted or reflected by the dye solution as a voltage or current value, and the diluted solution from the measured voltage or current value. A gist of a method of preparing a dyeing liquid is characterized by comprising a step of determining the amount of the liquid and a step of mixing the determined amounts of the dyeing liquid and the diluting liquid.

When the dyeing liquid is monochromatic, the laser light used here may be of one type having a wavelength corresponding to it. However, not only in the case of a mixed dye solution but also in the case of a monochromatic dye solution, it is possible to obtain more accurate color measurement data by using two or more types of laser beams having different wavelengths, and more preferably three or more types of laser beams. It is desirable because it can As the laser light of the above-mentioned three kinds of wavelengths, it is preferable to use one that contains laser light of the wavelengths of the three primary colors of light called RGB laser or wavelengths close to them in one laser beam. Of course, in order to perform the color measurement with higher accuracy, the color measurement data may be extracted by using laser light having four or more kinds of wavelengths. The three wavelengths are, for example, red 610 to 650 nm and green 510 to 550 nm.
nm and blue 460-500 nm wavelength laser light can be used conveniently.

The color of the dyeing liquid is measured by irradiating the dyeing liquid with the above laser light, receiving the transmitted light amount or the reflected light amount with, for example, a PIN photodiode, and converting it into a voltage value or a current value. Measure as data. Thus, this measured value is, for example, the higher the concentration of the dye liquor,
It can be set such that the voltage value rises and the transmitted light disappears at a maximum of 10V.

Therefore, now, red 632.8 nm and green 523.
Three types of laser light of each wavelength of 0 nm and blue 471.0 nm are used, and as a dye, "Irgaran Black
RBL, 200% "(trade name: manufactured by Nippon Ciba-Gaiki Co., Ltd.) is used to measure the color of dye liquor of various concentrations, and red, green,
When the voltage value of each blue component was obtained, it was as shown in FIG. As can be seen from the results shown in FIG. 2, the measured laser light amount, that is, the measured voltage, has a constant proportional relationship with the concentration of each hue component corresponding to each laser wavelength of the dye liquor. Therefore, the density of the corresponding hue component can be obtained from this measured value.

On the other hand, with respect to the reference dyeing liquid serving as a reference for color matching, the hue density is previously obtained as a voltage value or a current value by using at least one kind of wavelength laser light in the same manner as described above. To do.

Then, the voltage or current value measured from the dyeing solution for preparation is compared with that of the reference dyeing solution, and when the concentration of the dyeing solution for preparation is too high so as to match them, a diluting solution is prepared. , And in the opposite case, in order to add the dyeing solution, the mixing amount of the dyeing solution and the diluting solution is calculated and determined.
Then, based on this determined amount, both are mixed to obtain a dye liquor whose concentration matches the standard dye liquor.

The principle of the first invention can be effectively applied in the case of preparing one type of single-color dyeing liquid with a hue and a density that match a reference dyeing liquid. Since it is possible to obtain colorimetric data without being affected by, for example, it is possible to prepare the above-mentioned high-concentration dye mother liquor to be equivalent to the reference dye mother liquor, but in practice, industrially Is often mixed with two or more types of dye mother liquor to form a mixed dye liquor having a desired hue and concentration, the principle of the first invention is specifically as follows. It is usually applied in the preparation of liquids.

That is, the above-mentioned colorimetric data is obtained from each of a plurality of types of dye mother liquors, and based on the voltage or current value obtained thereby, a mixed dye liquor of the same hue and concentration as the reference mixed dye liquor is obtained after mixing. So that the mixing ratio of each mother liquor and the amount of the diluting solution to be added are calculated, and the mixing is performed according to the calculation.
As a method for calculating the mixing ratio of each mother liquor and dilute solution, a method of calculating the colorimetric data of each mother liquor, that is, the voltage or current value by comparing it with the colorimetric data of the reference mixed dye solution, and the above mother liquor There is a method of calculating the colorimetric data by comparing with the corresponding colorimetric data of each mother liquor before mixing of the standard mixed dyeing liquid.

The second invention is a method for preparing a mixed dye liquor by the former method, and the third invention is a method for preparing a mixed dye liquor by the latter method.

That is, the second invention is a method for preparing a mixed dye liquor having the same concentration as the standard mixed dye liquor by mixing two or more dye mother liquors, and at least two kinds of dye liquor are prepared for each dye mother liquor. Based on the voltage or current value of each dye mother liquor obtained, the step of irradiating the laser light of the wavelength, the step of measuring the laser light amount of each wavelength transmitted or reflected through the dye mother liquor as a voltage or current value, The step of determining the amount of each of the dye mother liquor and the diluting solution was determined so that the voltage or current value of the dye solution after mixing matches the corresponding voltage or current value of the reference mixed dye solution obtained in advance. The gist is a method for preparing a dyeing liquor, which comprises a step of mixing an amount of a dye mother liquor and a diluting liquor. The third invention is a method of preparing a mixed dye solution having the same concentration as that of the reference mixed dye solution by mixing two or more kinds of dye mother liquors, and at least one wavelength of each dye mother liquor is prepared. The step of irradiating the laser light, the step of measuring the amount of laser light of each wavelength transmitted or reflected through the dye mother liquor as a voltage or current value, and the voltage or current value of each dye mother liquor obtained is obtained in advance. A step of comparing the above-mentioned voltage or current value of the dye mother liquor before mixing the standard mixed dye liquor to determine the amount of the dye mother liquor and the diluting liquid to be mixed, and mixing the determined amount of the dye mother liquor and the diluting liquid A method for preparing a dyeing liquor, characterized by comprising:

In the second and third inventions, the step of determining the mixing amount of each of the dye mother liquor and the diluting liquid is based on the measured values of R, G, B of the dye mother liquor, for example, of the dye liquor after mixing. This means that the color matching calculation is performed so that the concentration value of each corresponding hue component matches the concentration of the corresponding component of the standard mixed dyeing liquor that is obtained in advance. This calculation is to match the density value at a certain wavelength of visible light with the reference density value, so the colorimetric data value (voltage or current value) obtained in the laser colorimetric process is used as the reference dye value. Liquid R, G, B
Calculate to match the set value (voltage or current value) of each component of, and determine the mixing ratio of the dye mother liquor and the diluting liquid based on the calculation to obtain the mixed dye of the same color as the standard dye. It will be done.

Here, in the second invention, since the colorimetric data of each dye mother liquor is compared with the colorimetric data of the reference mixed dye liquor, each mother liquor is at least two kinds, preferably three kinds. It is necessary to irradiate the above-mentioned laser beams having different wavelengths for color measurement. That is,
The hue and concentration of the standard mixed dye liquor can be known almost correctly only by the colorimetric data of at least two wavelengths. To compare with this, the colorimetric data of each mother liquor must also be calculated. This is because it is necessary to extract it as composite data of similar corresponding wavelengths.

On the other hand, in the third invention, the color matching calculation is performed mainly by comparing the concentration value of each dye mother liquor with the concentration value of the corresponding mother liquor before mixing of the reference mixed dye liquor. It is sufficient if the density can be measured, and it is permissible to extract the colorimetric data using laser light of at least one kind of wavelength.

The mixed dye liquor prepared as described above is
Although it matches the hue and density of the standard dye liquor required,
When carrying out the main dyeing process, it is possible to reconfirm whether the mixed dyeing solution actually matches the hue and concentration of the reference dyeing solution, and if there is a mismatch, re-prepare the dyeing solution. desired.

The fourth aspect of the present invention presents a method for confirming and re-preparing such a mixed dyeing liquor. That is,
The mixed dye liquor prepared by the second or third invention is irradiated with laser light of at least two kinds of wavelengths on the mixed dye liquor prepared by claim 2 or 3, and the transmitted light amount or reflected light amount is converted into voltage or current. The gist of the present invention is to provide a method for preparing a dye liquor in which the measured or determined voltage or current value is compared with the corresponding voltage or current value of a reference mixed dye liquor to readjust the amount of the dye mother liquor or the diluting liquor.

[0028]

According to the method for preparing a dye liquor by laser light according to the first aspect of the present invention, the hue and concentration of the dye liquor can be adjusted by using a high concentration dye mother liquor prepared by dissolving the dye liquor with a small amount of diluting liquid. Even in the state, it is possible to perform continuous measurement without any trouble, obtain them as numerical data, and automatically adjust them so as to match the reference dyeing liquid.

Further, according to the method for preparing a mixed dyeing solution of the second invention which prepares the mixed dyeing solution on the premise of the first invention, the mixed dyeing of a desired hue and density which matches the reference mixed dyeing solution. The liquid can be automatically prepared. That is, the dyeing liquid preparation operation for color matching can be performed completely automatically without being influenced by environmental conditions and the like.

Therefore, according to these inventions, it becomes possible to automate the whole process from the acceptance of the powder dye to the completion of the dyeing, which saves labor, reduces dye loss, and improves color matching accuracy. Enables shortening of dyeing liquid switching time.

Further, as in the fourth aspect of the invention, when the mixed and prepared dye liquor is further color-measured with a laser beam and compared with the colorimetric data of the reference mixed dye liquor for re-preparation, the primary dye liquor is Even if some kind of error occurs in the result of the preparation, it is possible to detect this before the actual dyeing and prevent the waste dyeing loss due to the color difference dyeing.

[0032]

【Example】

Example 1 First, as reference mixed dyes, two types of mixed dye liquors I and II shown in Table 1 below were prepared.

[0033]

[Table 1]

Then, each of the above reference mixed dyes is color-measured with laser light having three kinds of wavelengths of R, G and B (color-measuring conditions, R ... Helium-neon laser GLG54
20, wavelength 632.8 nm, output 12 mW, G ... Argon laser GLB3058, wavelength 514.5 nm, output 25 mW, B ... Argon laser GLB3058, wavelength 488.0 nm, output 25 mW, transmission distance ... 10 m /
m), the standard measurement values shown in Table 2 below were obtained.

[0035]

[Table 2]

Next, the same powder dyes as described above were dissolved in a small amount of diluting solution (water), and each dye was mixed with 10 parts.
A liquid dye mother liquor of g / l was prepared. Then, the color of each mother liquor was measured with a laser beam as described above. The measured values are shown in Table 3 below.

[0037]

[Table 3]

On the basis of the measured values shown in Table 3, color matching calculation was carried out so that the concentration values of the respective hue components after mixing the respective dye mother liquors coincided with the measured values of the corresponding hue components of the reference mixed dye liquor. Based on the calculation, each dye mother liquor was mixed with the diluting solution at the compounding ratio shown in Table 4, and the standard mixed dye liquors I and I were mixed.
Two types of mixed dye solutions I ′ and II ′ corresponding to I were obtained.

[0039]

[Table 4]

Then, for confirmation, the above mixed dye solutions I ', I
The hue and density of I ′ were measured with three types of laser light in the same manner as above. Further, a test dyeing of a nylon cloth is carried out by using the mixed dyeing solution to measure the color of the dyeing and the Macbet
h company spectrophotometer "COLOR-EYE" (trade name)
Was used to determine the cloth color difference value (ΔE) with respect to the dyeing with the standard mixed dyeing solution. The measurement results are shown in the table below.

[0041]

[Table 5]

As shown in Table 5, mixed dye liquors I'and I
It was confirmed that the colorimetric measurement values of I ′ were almost the same as the measurement values shown in Table 2 of the standard mixed dye liquor for all of R, G and B. Further, the cloth color difference can be visually confirmed by a color difference value ☆ E = 0.2 or more, and the dyeing with the reference mixed liquids I and II and the mixed dyeing liquid I ′ prepared as described above, Cloth color difference value with II 'dyed fabric ☆ E is shown in Table 5
As shown in the above, both are less than 0.2.
It was a perfect color match with the naked eye.

<Example 2> Powder dye "IrglamBlack RBL 200%" in different production lots from each other
(Product name: Nippon Ciba Gaiki Co., Ltd.) is prepared, and each of them is liquidized to a concentration of 2 g / l, and the first lot as the standard mixed dye and the second lot to be color-matched with this A dye liquor was prepared. And
Color measurement was performed on each of these dyeing solutions using laser light having three kinds of wavelengths of R, G, and B (color measurement conditions ... Same as in Example 1), and color measurement values shown in Table 6 below were obtained. .. Although these colorimetric values were obtained by diluting the same kind of powder dyes to the same concentration, there were slight differences as shown in Table 6. This measured value difference is also shown in Table 6.

[0044]

[Table 6]

Based on the colorimetric value difference obtained in Table 6 above,
The difference in density between the first lot dye and the second lot dye was obtained by substituting it into the relational expression derived from the relation between the dye concentration and the colorimetric value shown in FIG. The results are shown in Table 7.

[0046]

[Table 7]

According to Table 7 above, if the concentration of the second lot dye is increased at a rate of 0.05 g / l as an average value of the concentration difference, a dye liquor having almost the same concentration as that of the first lot dye as the standard dye liquor is obtained. Foreseeing that it was produced, the powder dye of the said ratio was further added to the second lot dyeing solution to obtain a prepared second lot dye.

For confirmation, the second lot dye solution after this adjustment was subjected to color measurement using laser beams having three kinds of wavelengths of R, G, and B in the same manner as described above, and the first dye which was the reference dye solution
It was compared with the measured value of lot dye. In addition, nylon cloth was dyed with these first and second lot dyeing liquors, and their color difference values were measured. The results of these measurements are also shown in Table 8.

[0049]

[Table 8]

As shown in the above table, it was confirmed that the adjusted second lot dye liquor had almost the same colorimetric value as the reference first lot dye liquor. Further, the cloth color difference value ΔE also showed a value of 0.06, and it could be confirmed that the color matching was almost complete to the extent that the color difference could not be recognized by the naked eye.

From the above results, in the case of a monochromatic dyeing solution, the prepared dyeing solution can be prepared by measuring the color with a laser beam of any one wavelength of R, G and B and adjusting only the measured value. It has been found that almost perfect color matching of is possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of an automatic dyeing system achieved by the present invention.

FIG. 2 is a graph showing the relationship between dye concentrations of liquid dye liquors prepared to various concentrations and colorimetric measurement values by laser light.

Claims (4)

[Claims] 1. A step of irradiating a dye liquor with laser light of at least one wavelength, a step of measuring the amount of laser light transmitted or reflected by the dye liquor as a voltage or current value, and a measured voltage or current value. Is compared with the corresponding voltage or current value of the standard dyeing liquid that has been obtained in advance, and the amounts of the dyeing liquid and the diluting liquid are determined so as to match this, and the determined amount of the dyeing liquid and the diluting liquid. And a step of mixing and. 2. A method for preparing a mixed dye liquor having the same concentration as a reference mixed dye liquor by mixing two or more dye mother liquors, wherein each dye mother liquor is irradiated with laser light of at least two kinds of wavelengths. And the step of measuring the laser light amount of each wavelength transmitted or reflected through the dye mother liquor as a voltage or current value, and based on the obtained voltage or current value of each dye mother liquor, A step of determining the amount of each of the dye mother liquor and the diluting solution so that the voltage or current value matches the corresponding voltage or current value of the standard mixed dye liquor, which has been determined in advance; And a step of mixing with a liquor. 3. A method for preparing a mixed dye solution having the same concentration as a standard mixed dye solution by mixing two or more dye mother liquors, wherein each of the dye mother liquors has a laser beam of at least one wavelength. And the step of measuring the laser light amount of each wavelength transmitted or reflected through the dye mother liquor as a voltage or current value, the obtained voltage or current value of each dye mother liquor, the previously determined standard A step of comparing the above-mentioned voltage or current value of the dye mother liquor before mixing of the mixed dye liquor to determine the amounts of the dye mother liquor and the diluting liquid to be mixed, and a step of mixing the determined amount of the dye mother liquor and the diluting liquid. A method for preparing a dye liquor, comprising: 4. A mixed dye solution prepared according to claim 2 or 3 is irradiated with laser light of at least two kinds of wavelengths,
A dye solution that measures the amount of transmitted light or reflected light as voltage or current, compares the obtained voltage or current value with the corresponding voltage or current value of the standard mixed dye solution, and re-adjusts the amount of dye mother liquor or diluting solution. Preparation method of.