JP2004161908A - Toning method of glossy coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and precise toning method of a glossy coating capable of repetitious toning. <P>SOLUTION: The method for toning a glossy coating containing a glossy material, whose preset constituents are known, comprises the steps of : (1) preparing an enamel reference plate without a glossy material based on preset coating constituents of the above glossy coating from which a glossy material and coating additives, if required, are eliminated; (2) obtaining a toned enamel coating corresponding to the color of the enamel reference plate by mixing raw coloring materials not including a glossy material and coating additives, if necessary, to tone; (3) toning by adding a glossy material and coating additives according to the requirement to the above toned enamel coating. <P>COPYRIGHT: (C)2004,JPO

Description

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【発明の効果】
本発明方法は、光輝材を除くエナメル塗料にて調色を行うので、光輝性顔料を配合した状態で原色塗料などの着色剤（光輝材を除く）の配合量を変化させる従来方法に比較して調色が容易で、かつ精度よく調色できる。
【００４５】
本発明方法においては、エナメル塗料の調色を行った後、光輝材を配合して目的とする調色された光輝性塗料を得るが、光輝材配合後において、目視及び／又は測色計にて光輝性塗料による塗膜の色一致性を判定する請求項４の発明においては、一般に高価である光輝感を有する塗膜の色及び光輝感を測定し、色合わせ計算ロジックが作動する光輝感にも対応したコンピュータ調色装置は必要がなく費用面で有利である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toning method capable of easily and accurately toning a glittering paint corresponding to repeated toning.
[0002]
[Prior art]
Conventionally, with regard to toning of paints, in Japanese Patent Laid-Open No. 63-153777, color data representing the hue, saturation and brightness of a selected color to be toned using a portable color meter is stored, and the color meter A plurality of paint formulations that can be used are stored in the computer, and the hue, saturation, and lightness of each paint specified by the stored available color formula are represented. Color data is stored in the computer and the closest match is found by comparing the color data of the selected color received from the color meter with the stored color data representing each of the stored available paint formulations. Selecting the stored paint formulation represented by the color data found as the closest match, thereby matching the color match for the selected color A method and apparatus for performing has been proposed (see Patent Document 1).
[0003]
In recent years, the paint color of automobiles and the like has increased with a brilliant paint color blended with aluminum powder and glitter mica powder from the viewpoint of diversification of personal preference and improvement of cosmetics. In the case of performing the color matching of this glittering coating color, the color matching method described in the above Japanese Patent Application Laid-Open No. 63-153777 still has insufficient color matching accuracy.
[0004]
Japanese Patent Laid-Open No. 10-310727 discloses a method for toning a metallic pearl paint that obtains a blending amount of a colorant and a glitter material that matches a target color of the metallic pearl paint that contains a colorant and a glitter material. Spectral reflectance is measured with a variable angle spectrophotometer in advance and stored in a computer's memory for a plurality of coated plate samples in which the mixing ratio of the coloring material and the glittering material to be used is changed. A method has been proposed for predicting and calculating the reproducible spectral reflectance while taking into account the change in variable spectral reflectance caused by changing the amount of glittering material added during the process, and obtaining the appropriate blending ratio of the colorant and glittering material. (See Patent Document 2).
[0005]
However, in this method, at least about 5 to 6 levels are necessary for one color material for a coated plate sample in which the mixing ratio of the coloring material and the glittering material is changed, and much labor is required for creating basic data. Since the algorithm is also complicated, the cost of the apparatus to be used becomes a factor.
[0006]
Japanese Patent Application Laid-Open No. 2001-221690 discloses (A) a colorimeter, (B) a micro brightness meter, (C) a plurality of paint blends, color data corresponding to each paint blend, and micro brightness. Sensation data, color characteristic data of a plurality of primary color paints and micro glitter characteristic data are registered, and a paint computer comprising the paint composition and a computer on which color matching calculation logic using each data operates A toning method that can be applied to a paint having a glittering feeling using a toning device is described (see Patent Document 3). However, it takes a lot of labor and cost to register the color data and micro glitter data corresponding to each paint composition used in this method, and the color characteristics data and micro glitter characteristics data of multiple primary color paints. However, since it is complicated, the cost of the apparatus to be used becomes a factor.
[0007]
Prior art document information related to the invention of this application includes the following.
[0008]
[Patent Document 1]
JP 63-153677 A [Patent Document 2]
Japanese Patent Laid-Open No. 10-310727 [Patent Document 3]
Japanese Patent Laid-Open No. 2001-221690
[Problems to be solved by the invention]
In any of the methods described in JP-A-10-310727 and JP-A-2001-221690, when toning a paint having a glittering feeling, even in repeated toning where the basic composition of the paint is known, Toning while grasping the optical characteristics of the coating film containing the glitter material, and because the glitter is included as a factor in addition to the color, the number of toning times until the toning is complicated and the passing level is reached There was a problem that there were many.
[0010]
The object of the present invention is that when toning a paint having a brilliant feeling whose basic composition of the paint is known, it can be easily and accurately toned, and can contribute to a reduction in the number of toning until reaching the shipment pass level. To provide a toning method.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present inventor has found that the above object can be achieved by separating the color change due to the color pigment composition from the effect of the glitter material and the effect on the color, and the present invention has been completed. It came to do.
[0012]
That is, the present invention provides: A step of preparing an enamel reference plate that does not contain a glittering material based on a coating composition obtained by removing a glittering material and, if necessary, a coating additive from a standard coating composition of a glittering paint whose known process standard coating composition is known,
Using the enamel reference plate as a reference, a toning enamel paint is prepared by blending and toning a raw material for paint such as a brilliant material and, if necessary, a primary color paint excluding paint additives, to match the paint color of the enamel reference plate And toning the glitter paint by adding a paint additive and, if necessary, a paint additive to the toning enamel paint,
The present invention provides a toning method for a glittering paint having a known reference composition and containing a glittering material.
[0013]
The present invention also provides 2. The toning method according to item 1, wherein the toning of the enamel paint in the step (2) is performed using a computer in which a color matching calculation logic operates.
[0014]
Furthermore, the present invention provides 3. In the step (3), a coated plate is prepared for the primary toning paint obtained by adding a reference blending amount of the glitter material to the toning enamel paint obtained in the step (2), and the desired glitter The color matching with the reference coating plate of the paint is determined, and if the color is acceptable, the toning is terminated, and if the color is unacceptable, the toning is performed by adjusting the amount of the glittering material. The toning method according to 1 or 2 is provided.
[0015]
The present invention also provides 4. In the step (3), the color matching is determined by a colorimeter and / or visual observation, and the toning method according to item 3 is provided.
[0016]
Hereinafter, the toning method of the present invention will be described in detail.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The toning method of the present invention is a method for toning a glitter paint having a known reference composition. Therefore, it is a method that can be suitably used in the case of repeatedly producing a toned paint for the same paint color whose reference blend is known.
[0018]
If there is no lot-to-lot variation in the raw materials for producing glitter paint, it is possible to obtain a paint with the desired color and glitter feeling if blended according to the standard blend, There are variations among lots, and even in a primary color paint containing a single kind of pigment, there is a certain variation in coloring power, and the color may vary. Therefore, even when a glossy paint having a known reference composition is toned, the color consistency is hardly passed with the composition according to the reference composition.
[0019]
The method of the present invention is not toning at once as a paint containing a glittering material when toning a glittering paint, but after toning an enamel paint without a glittering material, the glittering material is applied to the toned colored enamel. Is a toning method for obtaining the desired glittering paint, and includes the following steps (1), (2) and (3).
[0020]
Process (1)
Step (1) is to create an enamel reference plate that does not contain a glittering material based on a coating composition obtained by removing the glittering material and, if necessary, a coating additive, from the reference coating composition of the glittering paint whose reference coating composition is known It is a process to keep. Examples of the glitter material include metal powder such as aluminum powder, glitter coated mica powder (titanium oxide coated mica powder, iron oxide coated mica powder, and the like). The paint additive removed as necessary is a paint additive that hardly affects the coating color, for example, an orientation modifier (auxiliary for adjusting the orientation of aluminum powder in the coating film), Examples thereof include paint fluidity modifiers, antifoaming agents, ultraviolet absorbers, ultraviolet stabilizers and solvents.
[0021]
In step (1), an enamel reference plate serving as a reference for creating a toned enamel that does not contain a glittering material is prepared. The known standard coating composition of the glittering paint to be toned can be an actual composition when toning the glittering paint. The reference paint blend is preferably the most reliable blend at that time, and can be, for example, the average value of the past blend.
[0022]
A paint composition in which a glittering material is removed from the above-mentioned standard paint composition and paint additives are removed as necessary (for example, consisting of one or more primary colors containing a single kind of pigment and vehicle, or mainly comprising one or more primary colors) The enamel reference plate is made from the paint of the formula. The enamel reference plate may be any one as long as it can serve as a reference for creating the toned enamel paint, and may be one or more coated under different coating conditions.
[0023]
The toning enamel reference plate may be prepared immediately before the production of the desired glittering paint, or may be prepared and stored in advance.
[0024]
Process (2)
In step (2), based on the enamel reference plate obtained in step (1) above, blending and toning a raw material for paint such as a primary color paint excluding a glittering material and, if necessary, a paint additive, This is a step of obtaining a toned enamel paint that matches the paint color of the enamel reference plate. In the toning of the enamel paint, the computer toning can be performed using a computer in which the color matching calculation logic operates, or the toning by a colorimeter and / or visual observation can be performed without using the computer toning. Naturally, both computer toning and visual observation may be used in combination. When judging whether the colors match based on the values measured by a computer or colorimeter that operates the color matching calculation logic, for example, ΔE ^* by the L ^* a ^* b ^* color system defined in JIS Z8729 (1994) ^. It can be managed by value.
[0025]
Step (3)
In the step (3), the glittering paint obtained by adding the glittering material removed from the reference coating composition in the step (2) and, if necessary, the coating additive to the toning enamel coating obtained in the above step (2). Is a step of toning. If the reference amount of the paint additive is added in the step (2), it is not necessary to add the paint additive in the step (3).
[0026]
In the step (3), the reference amount of the glitter material may be added at a time, or the amount may be slightly reduced, and the glitter material can be added while observing the glitter feeling. The variation in brightness of glittering materials has been reduced due to improvements in technology for manufacturing glittering materials, etc., except for those with large variations, it can be rejected even if the reference amount of glittering material is added at once. It is not considered.
[0027]
With respect to the primary toning paint in which a glittering material or the like is blended with the toning enamel paint, a painted plate can be prepared, and the color consistency with the reference coating plate of the intended glitter paint can be determined. In this determination, if the color matching is acceptable, the toning is terminated, and if the color matching is unacceptable, further toning is performed. The determination of the color matching can be performed using, for example, a colorimeter, can be performed visually, or both can be used together. As the colorimeter, a multiangle colorimeter that can perform color measurement at multiple angles is suitable. When the color coincidence is determined by the colorimeter, ΔE according to the L ^* a ^* b ^* color system defined in JIS Z8729 (1994), for example, at a light receiving angle of about 2 to 5 levels, for example. ^* It can be judged by whether or not the value is within a certain range. The light receiving angle means an angle formed between the specular reflection axis and the light receiving axis when the coating film is irradiated with light at a constant incident angle. When measuring at a light reception angle of 3 levels, for example, the light reception angle is one of each of the angle ranges of 15 to 30 degrees, 35 to 60 degrees, and 75 to 110 degrees. This is preferable because it can be easily handled with judgment.
[0028]
Raw paint itself, which is the primary toning paint, is not used to determine whether the color of the primary toning paint that contains a glittering material or the like to the toning enamel paint is acceptable or not. It can also be based on liquid toning to determine color.
[0029]
The liquid toning of the glitter paint has a problem in accuracy at the present time as compared with the method of toning according to the reference coating plate. When high precision is required in the toning of the glitter paint, the process (3 It is preferable to determine the color consistency in (2) based on the color consistency of the glossy paint coated plate with the reference coated plate.
[0030]
If the color matching determination is acceptable, the toning is terminated, and if it is unacceptable, the target glittering paint can be obtained by performing toning by adjusting the amount of the glittering material.
[0031]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples.
[0032]
Comparative Example 1 Toning of light-colored silver TS paint In order to match the color with the standard plate of light-colored silver TS paint, the initial composition was blended as shown in Table 1 to obtain an initial blended paint. In the initial blending, the amount of the aluminum paste A is 100% by weight, the aluminum paste B is 100% by weight, the yellow A primary color is 80% by weight, the yellow B primary color, the brown A primary color, and the amount of the orientation modifier with respect to the reference blending. 50% by weight and 0% by weight of the red A primary color were blended. This initial blended paint was spray-coated on a white base plate under the above standard conditions, and baked at 90 ° C. for 30 minutes to obtain an initial toned coated plate. The first toning coating plate and the standard plate of pale silver TS paint are measured with a computer color matching device (trade name “Alesmatch” manufactured by Kansai Paint Co., Ltd.) to calculate the blend, and the first correction Formulation was sought. Based on this correction formulation, the first toning paint was obtained. When the coated plate of this toning paint was prepared in the same manner as described above, the color difference ΔE ^* was 0.88. In the same manner as described above, the second and third toning paints were obtained by the computer color matching apparatus. The color difference ΔE between the third toning paint coating plate and the standard plate was 0.36.
[0033]
Example 1 Toning of light silver TS paint Based on the standard composition obtained from the average value of production results of light silver TS paint, an enamel paint containing no glitter material is prepared based on the paint composition excluding the glitter material did. This enamel paint was spray-coated on a white base plate so as to have a cured film thickness of about 16 μm under the standard painting condition of a light silver TS paint, and baked at 90 ° C. for 30 minutes to prepare an enamel reference plate.
[0034]
In order to match the color to this enamel reference plate, the initial blend was prepared as shown in Table 2 below. In the initial blending, the amount of yellow A primary color is 80% by weight, the amount of yellow B primary color, brown A primary color and orientation modifier is 50% by weight, and the amount of red A primary color is 0% by weight. The first enamel paint was obtained. This initial enamel paint was spray-coated on a white base plate under the above standard conditions and baked at 90 ° C. for 30 minutes to obtain an initial enamel-blended coated board. The coating plate and the enamel reference plate were measured with a computer color matching device (trade name “Alesmatch” manufactured by Kansai Paint Co., Ltd.) to calculate the blending, and the first enamel correction blending was obtained. A first toning paint was obtained based on the correction formulation, and a coated plate of this toning paint was prepared in the same manner as described above, and the color difference ΔE ^* was 0.56. The second enamel toning paint was obtained by the color matching device, and the color difference ΔE of the second toning paint was 0.32. The color difference ΔE between the paint plate containing 100% by weight of each of the aluminum paste A and the aluminum paste B) and the standard plate of the glitter paint was also measured.
The coating plate of the paint encapsulating 100% by weight of the glitter material in the second enamel toning paint has a small color difference ΔE of 0.28 from the standard plate of the light silver TS paint, and no visual difference is observed. The color matching was acceptable. The correction composition and the color difference ΔE ^* are shown in Table 2 below.
[0035]
Comparative Example 2 Toning of Dark Green DG Paint To obtain a toning paint of dark green DG paint, in Comparative Example 1, the initial blend was blended as shown in Table 3 below to obtain the initial blend paint, Based on the blending calculation by the computer color matching device, the same procedure as in Comparative Example 1 was performed except that the first, second and third toning paints were obtained by the correction blending shown in Table 3. The color difference ΔE ^* between the third toning paint coating plate and the standard plate was 0.38.
[0036]
Example 2 Toning of dark green color DG paint From the standard composition obtained from the average value of the production results of dark green color DG paint, an enamel paint containing no glitter material is prepared based on the paint composition excluding the glitter material. did. This enamel paint was spray-coated on a white base plate so that the cured film thickness was about 16 μm under the standard coating conditions of dark green DG paint, and baked at 90 ° C. for 30 minutes to prepare an enamel reference board.
[0037]
In obtaining the toning paint of the dark green DG paint, in Example 1, the initial blending was blended as shown in Table 4 below to obtain the first blended paint, and in turn based on the blending calculation by the computer color matching device, The same procedure as in Example 1 was performed except that the first and second toning paints were obtained by the correction formulation shown in FIG. The color difference ΔE ^* between the painted plate of the second enamel-colored paint and the standard plate was 0.15. The color difference ΔE ^* between the painted plate of 100% by weight of glittering material in the second enamel toned paint and the standard plate of dark green DG paint is as small as 0.23, and no visual difference is recognized. The color matching was acceptable.
[0038]
In the said Comparative Examples 1-2 and Examples 1-2, visual evaluation of the coating board in postscript Table 1-Table 4 was performed based on the following reference | standard.
[0039]
Visual evaluation: A standard plate and a coated plate of each glittering paint were visually observed and evaluated according to the following criteria.
A: Good with no difference from the reference plate.
B: Although a slight difference is recognized as compared with the reference plate, it is good.
C: Although a difference is recognized as compared with the reference plate, it is within the limit and is within the range of passing the shipment.
D: The difference exceeds the limit compared to the reference plate, and the shipment is rejected.
[0040]
[Table 1]

[0041]
[Table 2]

[0042]
[Table 3]

[0043]
[Table 4]

[0044]
【The invention's effect】
Since the method of the present invention performs toning with an enamel paint excluding the glittering material, compared to the conventional method in which the blending amount of the colorant (excluding the glittering material) such as a primary color paint is changed in the state where the glittering pigment is blended. Color matching is easy and accurate.
[0045]
In the method of the present invention, after toning the enamel paint, a glittering material is blended to obtain the desired toned glittering paint, but after blending the glittering material, the visual and / or colorimeter is used. In the invention of claim 4, the color consistency of the coating film having a glossy feeling, which is generally expensive, is measured and the color matching calculation logic is activated. The computer toning device corresponding to the above is unnecessary and advantageous in terms of cost.

Claims (4)

A step of preparing an enamel reference plate that does not contain a glittering material based on a coating composition obtained by removing a glittering material and, if necessary, a coating additive from a standard coating composition of a glittering paint whose known process standard coating composition is known,
Using the enamel reference plate as a reference, a toning enamel paint is prepared by blending and toning a raw material for paint such as a brilliant material and, if necessary, a primary color paint excluding paint additives, to match the paint color of the enamel reference plate And toning the glitter paint by adding a paint additive and, if necessary, a paint additive to the toning enamel paint,
A toning method for a glittering paint having a known reference composition and containing a glittering material. The toning method according to claim 1, wherein the toning of the enamel paint in the step (2) is performed using a computer in which a color matching calculation logic operates. In the step (3), a coated plate is prepared for the primary toning paint obtained by adding a reference blending amount of the glitter material to the toning enamel paint obtained in the step (2), and the desired glitter The color matching with the reference coating plate of the paint is determined, and if the color is acceptable, the toning is terminated, and if the color is unacceptable, the toning is performed by adjusting the amount of the glittering material. The toning method according to 1 or 2. 4. The toning method according to claim 3, wherein in the step (3), the color matching is determined by a colorimeter and / or visual observation.