JP2008203069A - Appearance evaluation method of lamellar powder - Google Patents

Appearance evaluation method of lamellar powder Download PDF

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JP2008203069A
JP2008203069A JP2007038952A JP2007038952A JP2008203069A JP 2008203069 A JP2008203069 A JP 2008203069A JP 2007038952 A JP2007038952 A JP 2007038952A JP 2007038952 A JP2007038952 A JP 2007038952A JP 2008203069 A JP2008203069 A JP 2008203069A
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powder
glossiness
standard deviation
appearance
lamellar powder
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Kyoko Shiroichi
京子 城市
Fumitaka Sato
文孝 佐藤
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Shiseido Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for quantitatively evaluating the glittering appearance (glossiness and state of interspersion) of a lamellar powder, inclusive of pearl pigment, and a laminated material excelling in designability, security, and capable of being manufactured at low cost and having recorded data. <P>SOLUTION: The lamellar powder or a decorative material compounded with the lamellar powder being an inspection target is charged or applied smoothly, in order to objectively evaluate the glittering appearance (glossiness and dispersiveness) of the lamellar powder, such as the pearl pigment, and the charged or applied surface is imaged by a color CCD camera which is an imaging means. The luminance signal of RGB of the display image photographed by the color CCD camera is subjected to calculation processings by an image processor, and the standard deviation (σL*) of the luminance index (L*) of respective pixels is calculated, to evaluate the glittering appearance (glossiness and dispersiveness) of the lamellar powder by using the standard deviation (σL*) as an index. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、板状粉体の外観の評価方法に関するものである。   The present invention relates to a method for evaluating the appearance of a plate-like powder.

特開平10-96681には、画像解析による色むらや輝度むらの測定方法が開示されているが、液晶を用いた表示装置の表示むらの検査方法に用いられているものである。一方、パール顔料をはじめとする顔料のキラキラとした外観（光沢性と点在性）の評価は、限度見本との比較による官能評価が主に行われてきた。人が直接視認するので実際の状態に近い検査であって簡便な手法である。また、粉体の粒径を測定し、この値をキラキラした外観、特に点在性を評価するための参考としていた。   Japanese Patent Application Laid-Open No. 10-96681 discloses a method for measuring color unevenness and brightness unevenness by image analysis, and is used in a method for inspecting display unevenness of a display device using liquid crystal. On the other hand, for the evaluation of the glittering appearance (glossiness and interstitialness) of pigments including pearl pigments, sensory evaluation by comparison with limit samples has been mainly performed. This is a simple method that is close to the actual condition because it is directly viewed by a person. Further, the particle diameter of the powder was measured, and this value was used as a reference for evaluating the sparkling appearance, particularly the interstitialness.

特開平１０−９６６８１号公報JP-A-10-96681

しかし、従来の官能評価では微妙な光沢感や点在感の差を検出できるが、検査員による個人差や疲労度合等によるばらつきが大きく客観的が評価を行うことが困難であった。
また、粉体の粒径による評価は点在性を評価する一要素に過ぎず、キラキラとした外観に対する官能評価と一致しない場合があり、粉体の外観（光沢性と点在性）を評価する客観的指標としては不十分であった。 However, although the conventional sensory evaluation can detect a subtle difference in glossiness and dotted feeling, there are large variations due to individual differences and fatigue levels among the inspectors, making it difficult to make an objective evaluation.
In addition, the evaluation based on the particle size of the powder is only one element for evaluating the dot dispersibility, and may not coincide with the sensory evaluation for the glittering appearance, and the powder appearance (glossiness and dot dispersal) is evaluated. It was insufficient as an objective indicator.

第１の発明は、塗布した板状粉体を撮影し、撮影画像を解析することにより、板状粉体の外観を評価することを特徴とする。 The first invention is characterized in that the appearance of the plate-like powder is evaluated by photographing the coated plate-like powder and analyzing the photographed image.

第２の発明は、第１の発明を前提とし、明度指数（L*）の標準偏差（σL*）をパラメータとして用いることに特徴を有する。 The second invention is characterized by using the standard deviation (σL *) of the lightness index (L *) as a parameter on the premise of the first invention.

第３の発明は、第２の発明を前提とし、CCDカメラで撮影した画像を用いて評価する点に特徴を有する。 The third invention is based on the second invention and is characterized in that it is evaluated using an image taken by a CCD camera.

この発明によれば、パール顔料をはじめとする板状粉末のキラキラした外観（光沢性と点在性）について定量的に評価することができる。   According to the present invention, it is possible to quantitatively evaluate the glittering appearance (glossiness and interstitialness) of a plate-like powder including a pearl pigment.

この発明の好ましい実施の形態を、以下に詳細に説明する。 Preferred embodiments of the present invention will be described in detail below.

この発明は、パール顔料等の板状粉体のキラキラした外観（光沢性と点在性）を客観的に評価すべく、被検査物である板状粉体あるいは板状粉体を配合した化粧料を平滑に充填または塗布し、かかる充填または塗布した表面を撮像手段であるカラーCCDカメラで撮影する。撮像手段はカラーCCDカメラに限定されず、モノクロのCCDカメラでも良いし、その他の撮像素子であってもよい。
カラーCCDカメラで撮像した表示画像のRGBの輝度信号を画像処理装置により演算処理し、各画素の明度指数（L*）の標準偏差（σL*）を求め、板状粉体のキラキラした外観（光沢性と点在性）の評価を行う。 This invention is intended to objectively evaluate the glittering appearance (glossiness and interstitialness) of a plate-like powder such as a pearl pigment, or a cosmetic containing a plate-like powder or plate-like powder as an object to be inspected. The material is filled or applied smoothly, and the surface that has been filled or applied is photographed with a color CCD camera that is an imaging means. The imaging means is not limited to a color CCD camera, and may be a monochrome CCD camera or other imaging device.
The RGB luminance signal of the display image captured by the color CCD camera is processed by an image processing device, the standard deviation (σL *) of the lightness index (L *) of each pixel is obtained, and the glittering appearance of the plate-like powder ( (Glossiness and interstitialness) are evaluated.

（実施例１）
白色パール顔料の点在感の評価として粉末とニトロセルロースラッカーを２対１５で分散し、204μmのドクターブレードを用い黒紙に塗布し、非接触画像色彩計（浅枝設計事務所製）を用いて測定を行った。キラキラした外観（光沢度と点在度）の評価として、各画素の明度指数（L*値）の標準偏差（σL*）を求めた。
評価粉末として、メタシャインＭＣ１０２０ＲＹ（平均粒径20μm）、ＭＣ１０４０ＲＹ（平均粒径40μm）、ＭＣ１０８０ＲＹ（平均粒径８0μm）、ＭＣ１１２０ＲＹ（平均粒径120μm）（日本板硝子社製）、プレステージスパークリングゴールド（平均粒径70μm）（エッカート社製）を用いた。
また、官能評価として評価者10人による5段階評価（◎：５、○：４、△：３、△×：２、×：１）を行った。 (Example 1)
As an evaluation of the scattered feeling of the white pearl pigment, the powder and nitrocellulose lacquer were dispersed 2 to 15 and applied to black paper using a 204 μm doctor blade, and a non-contact image colorimeter (manufactured by Asae Design Office) was used. Measurements were made. As an evaluation of the brilliant appearance (glossiness and interstitialness), the standard deviation (σL *) of the lightness index (L * value) of each pixel was obtained.
As the evaluation powder, Metashine MC1020RY (average particle size 20 μm), MC1040RY (average particle size 40 μm), MC1080RY (average particle size 80 μm), MC1120RY (average particle size 120 μm) (manufactured by Nippon Sheet Glass), Prestige Sparkling Gold (average particle) (Diameter 70 μm) (manufactured by Eckert) was used.
Further, as a sensory evaluation, five-level evaluation (に よ る: 5, ○: 4, Δ: 3, Δ ×: 2, ×: 1) was performed by 10 evaluators.

Figure 2008203069
Figure 2008203069

表１の結果をグラフ化し図１及び図２に示す。
図１の横軸は標準偏差（σL*）であり、縦軸は官能評価結果（Ｎ＝10平均値）に対応し、グラフ上の各データ点を得た。相関はr2≒0.94となり高い相関が得られた。
図２の横軸は粉末の平均粒径であり、縦軸は官能評価結果（Ｎ＝10平均値）に対応し、グラフ上の各データ点を得た。相関はr2≒0.70となり、相関が低く、平均粒径と官能指数が逆転することもあり、平均粒径では顔料のキラキラした外観（光沢性と点在性）を示すことはできない。
以上の結果から、本発明の方法で評価することにより、官能と相関が高く、白色パール顔料のキラキラした外観（光沢性と点在性）の評価に適していることが分かる。 The results of Table 1 are graphed and shown in FIGS.
The horizontal axis in FIG. 1 is the standard deviation (σL *), and the vertical axis corresponds to the sensory evaluation result (N = 10 average value), and each data point on the graph was obtained. The correlation was r 2 ≈0.94 and a high correlation was obtained.
The horizontal axis in FIG. 2 represents the average particle diameter of the powder, and the vertical axis corresponds to the sensory evaluation result (N = 10 average value), and each data point on the graph was obtained. The correlation is r 2 ≈0.70, the correlation is low, the average particle size and the sensory index may be reversed, and the average particle size cannot show the pigmented appearance (glossiness and interspersed).
From the above results, it can be seen that the evaluation by the method of the present invention has a high correlation with the sensation and is suitable for the evaluation of the glittering appearance (glossiness and interstitialness) of the white pearl pigment.

（実施例２）
有色パール顔料の評価を実施例１の方法を用いて行った。
評価粉末として、リフレックス
ギルデッドゴールド（平均粒径100μm）、クロイゾネスパークリングゴールド（平均粒径40μm）、クロイゾネゴールド（平均粒径20μm）(エンゲルハード社製)、プロミネンスＲＦＹ（平均粒径100μm）（日本光研工業社製）、メタシャインＭＣ１０８０ＴＹ（平均粒径80μm）（日本板硝子社製）、を用いた。 (Example 2)
The colored pearl pigment was evaluated using the method of Example 1.
As evaluation powders, Reflex Gilded Gold (average particle size 100 μm), Croizone Sparkling Gold (average particle size 40 μm), Croizone Gold (average particle size 20 μm) (manufactured by Engelhard), Prominence RFY (average particle size 100 μm) ) (Manufactured by Nippon Koken Kogyo Co., Ltd.), Metashine MC1080TY (average particle size 80 μm) (manufactured by Nippon Sheet Glass Co., Ltd.).

Figure 2008203069
Figure 2008203069

表２の結果をグラフ化し図３及び図４に示す。
図３の横軸は標準偏差（σL*）であり、縦軸は官能評価結果（Ｎ＝10平均値）に対応し、グラフ上の各データ点を得た。相関はr2≒0.97となり高い相関が得られた。
図４の横軸は粉末の平均粒径であり、縦軸は官能評価結果（Ｎ＝10平均値）に対応し、グラフ上の各データ点を得た。相関はr2≒0.60となり、相関が低く、平均粒径と官能指数が逆転することもあり、平均粒径では顔料のキラキラした外観（光沢性と点在性）を示すことはできない。
以上の結果から、本発明の方法で評価することにより、官能と相関が高く、有色パール顔料のキラキラした外観（光沢性と点在性）の評価に適していることが分かる。 The results of Table 2 are graphed and shown in FIGS.
The horizontal axis in FIG. 3 is the standard deviation (σL *), and the vertical axis corresponds to the sensory evaluation result (N = 10 average value), and each data point on the graph was obtained. The correlation was r 2 ≈0.97, and a high correlation was obtained.
The horizontal axis of FIG. 4 is the average particle diameter of the powder, and the vertical axis corresponds to the sensory evaluation result (N = 10 average value), and each data point on the graph was obtained. The correlation is r 2 ≈0.60, the correlation is low, the average particle diameter and the sensory index may be reversed, and the average particle diameter cannot show the glittering appearance (glossiness and dotiness) of the pigment.
From the above results, it can be seen that the evaluation by the method of the present invention has a high correlation with the sensation and is suitable for the evaluation of the glittering appearance (glossiness and interstitialness) of the colored pearl pigment.

（実施例３：アイシャドーの外観の評価）
（製法）
粉部、及び油相部をそれぞれ均一に分散し、その後両者を混合して金皿に打型した。
実施例１で用いたパール顔料を配合して、キラキラした外観（光沢性と点在性）の官能評価と明度指数（L*値）の標準偏差（σL*）を求めた。 (Example 3: Evaluation of appearance of eye shadow)
(Manufacturing method)
The powder part and the oil phase part were uniformly dispersed, and then both were mixed and cast into a metal pan.
The pearl pigment used in Example 1 was blended, and the sensory evaluation of the glittering appearance (glossiness and interstitialness) and the standard deviation (σL *) of the brightness index (L * value) were determined.

Figure 2008203069
Figure 2008203069

表３より、官能評価と明度の標準偏差値（σL*）の順位が一致したことから、本製品系においても、本評価法が有効であった。   From Table 3, since the ranking of the sensory evaluation and the standard deviation value of lightness (σL *) coincided, this evaluation method was also effective in this product system.

〔実施例４：リップグロスの外観の評価〕
（製法）
各原料を混合して95℃に加熱し、その後均一に攪拌して、金型に流し込み冷却した。
実施例２で用いたパール顔料を配合して、キラキラした外観（光沢性と点在性）の官能評価と明度指数（L*値）の標準偏差（σL*）を求めた。 [Example 4: Evaluation of appearance of lip gloss]
(Manufacturing method)
Each raw material was mixed and heated to 95 ° C., then stirred uniformly, poured into a mold and cooled.
The pearl pigment used in Example 2 was blended, and the sensory evaluation of the glittering appearance (glossiness and interstitialness) and the standard deviation (σL *) of the lightness index (L * value) were determined.

Figure 2008203069
Figure 2008203069

表４より、官能評価と明度の標準偏差値（σL*）の順位が一致したことから、本製品系においても、本評価法が有効であった。 From Table 4, the sensory evaluation and the lightness standard deviation value (σL *) were in the same rank, so this evaluation method was effective even in this product system.

〔実施例５：ネールエナメルの外観の評価〕
（製法）
常法によりネールエナメルを試作し、204μmのドクターブレードを用い黒紙に塗布し評価を行った。
実施例２で用いたパール顔料を配合して、キラキラした外観の官能評価と明度指数（L*値）の標準偏差（σL*）を求めた。 [Example 5: Evaluation of appearance of nail enamel]
(Manufacturing method)
Nail enamel was made by a conventional method and evaluated by applying it to black paper using a 204 μm doctor blade.
The pearl pigment used in Example 2 was blended, and the sensory evaluation of the glittering appearance and the standard deviation (σL *) of the lightness index (L * value) were obtained.

Figure 2008203069
Figure 2008203069

表５より、官能評価と明度の標準偏差値（σL*）の順位が一致したことから、本製品系においても、本評価法が有効であった。 From Table 5, the sensory evaluation and the lightness standard deviation value (σL *) were in the same rank, so this evaluation method was effective even in this product system.

白色パール顔料についての明度指数（Ｌ*）の標準偏差（σL*）と官能評価結果（Ｎ＝10平均値）との相関関係を示したグラフである。It is the graph which showed the correlation with the standard deviation ((sigma) L *) of the brightness index (L *) about a white pearl pigment, and a sensory evaluation result (N = 10 average value). 白色パール顔料についての平均粒径と官能評価結果（Ｎ＝10平均値）との相関関係を示したグラフである。It is the graph which showed the correlation with the average particle diameter about a white pearl pigment, and a sensory evaluation result (N = 10 average value). 有色パール顔料についての明度指数（L*）の標準偏差（σL*）と官能評価結果（Ｎ＝10平均値）との相関関係を示したグラフである。It is the graph which showed the correlation with the standard deviation ((sigma) L *) of the brightness index (L *) about a colored pearl pigment, and a sensory evaluation result (N = 10 average value). 有色パール顔料についての平均粒径と官能評価結果（Ｎ＝10平均値）との相関関係を示したグラフである。It is the graph which showed the correlation with the average particle diameter about a colored pearl pigment, and a sensory evaluation result (N = 10 average value).

Claims (3)

塗布した板状粉体を撮影し、撮影画像を解析することにより、板状粉体の外観を評価する方法。 A method of evaluating the appearance of a plate-like powder by photographing the coated plate-like powder and analyzing the photographed image. 撮影画像について明度指数（L*）の標準偏差（σL*）を求め、標準偏差（σＬ*）を板状粉体の外観を評価するパラメータとして用いることを特徴とする請求項１記載の評価方法。 The evaluation method according to claim 1, wherein a standard deviation (σL *) of a lightness index (L *) is obtained for a photographed image, and the standard deviation (σL *) is used as a parameter for evaluating the appearance of the plate-like powder. . CCDカメラで撮影された画像を用いることを特徴とする請求項１または２記載の評価方法。 3. The evaluation method according to claim 1, wherein an image photographed by a CCD camera is used.
JP2007038952A 2007-02-20 2007-02-20 Appearance evaluation method of lamellar powder Withdrawn JP2008203069A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8715840B2 (en) 2008-11-26 2014-05-06 Seagate Technology Llc Reduced spacing recording apparatus
JP2016070847A (en) * 2014-09-30 2016-05-09 花王株式会社 Method and device for evaluating gloss of cosmetic
JP2018105792A (en) * 2016-12-27 2018-07-05 株式会社 資生堂 Cosmetic texture measuring method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8715840B2 (en) 2008-11-26 2014-05-06 Seagate Technology Llc Reduced spacing recording apparatus
JP2016070847A (en) * 2014-09-30 2016-05-09 花王株式会社 Method and device for evaluating gloss of cosmetic
JP2018105792A (en) * 2016-12-27 2018-07-05 株式会社 資生堂 Cosmetic texture measuring method

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