WO2023214767A1 - 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법 - Google Patents
액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법 Download PDFInfo
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- WO2023214767A1 WO2023214767A1 PCT/KR2023/005964 KR2023005964W WO2023214767A1 WO 2023214767 A1 WO2023214767 A1 WO 2023214767A1 KR 2023005964 W KR2023005964 W KR 2023005964W WO 2023214767 A1 WO2023214767 A1 WO 2023214767A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dry
- liquid
- color value
- paint
- paint color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/463—Colour matching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/251—Colorimeters; Construction thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1748—Comparative step being essential in the method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1761—A physical transformation being implied in the method, e.g. a phase change
Definitions
- the present invention relates to a method of predicting the color value of a dry paint from the color value of a liquid paint.
- the manufacturing process of paint usually includes the steps of adding paint components, mixing them according to the required process, and inspecting the target color value before the final step.
- the raw materials needed to manufacture paint are injected, mixed, dispersed and dissolved to mix, and then go through a color inspection step to finally complete the manufacturing process.
- the color inspection step includes the dry film formation step of collecting a small amount of the liquid paint being manufactured and drying it into a film.
- it is a spray spraying process of the liquid paint or painting using a brush, roller, and bar coater.
- a drying/curing process of the paint is added according to the curing conditions.
- color verification goes through liquid paint sample collection, film formation, and drying/curing steps. This must be performed over at least an hour to several hours, which delays the manufacturing process and generates waste paint due to the use of the collected samples. And environmental problems may arise as a result.
- the color value of the liquid paint and the dry paint manufactured therefrom may vary depending on the manufacturing environment, such as mixing environment, drying and curing environment. Therefore, when trying to manufacture the same liquid paint and dry paint manufactured therefrom, there is a problem that the color value of the final product liquid paint and the dry paint manufactured therefrom differs even when the same ingredients are added.
- the dry paint color verification process which includes the drying/curing process after the spray spray process or the painting process with a brush, roller, and bar coater, with a liquid paint color verification process performed in the liquid paint state.
- Patent Document 1 Republic of Korea Patent No. 10-2191784 (December 10, 2020)
- Patent Document 2 Republic of Korea Patent Publication No. 10-1985-0006893 (October 21, 1985)
- Non-patent Document 1 Prediction of paint pigment mixing ratio for reproduction of target color, J. of the Korean Oil Chemists' Soc, Vol. 25, no. 4. December, 2008. 438 ⁇ 445
- the present invention replaces the dry paint color verification step with the liquid paint color verification step in the paint manufacturing process, simplifying the manufacturing process and reducing the generation of waste paint, which can solve environmental problems by calculating the dry paint color value from the liquid paint color value.
- the present invention provides a method for predicting a dry paint color value from a liquid paint color value, comprising the steps of: a) preparing 1st to nth first liquid paint films of the same component; b) measuring the liquid reflectance 1st R wet for each of the 1st to nth first liquid coating films at wavelength r; c) drying and curing each of the 1st to nth first liquid coating films to produce the 1st to nth first dry coating films; d) measuring the dry reflectance 1st R Dry for each of the 1st to nth first dry coating films at wavelength r; e) Obtaining the weight value and bias value for the first liquid coating film at wavelength r using the following formula: , here When , R T is the transposed matrix of matrix R, and R -1 represents the inverse matrix of matrix R; f) manufacturing a second liquid coating film of the same composition as the first liquid coating film; g) measuring the liquid reflectance 2nd R wet for the second liquid coating film
- the method of predicting the dry paint color value from the liquid paint color value according to the present invention omits the dry paint color verification step and predicts the dry paint color value from the liquid paint color value to simplify the manufacturing process and reduce waste paint generation. Environmental problems can be solved.
- Patent Document 1' discloses an electrodeposition coating system equipped with a liquid paint test kit and a color meter designed to measure the color of the liquid paint through a viewing window.
- Patent Document 1 only measures the color of the liquid paint and does not disclose or hint at predicting the color of the dry paint from this.
- the present invention provides a method for predicting the dry paint color value from the liquid paint color value.
- a first liquid coating film and a first dry coating film dried and cured therefrom are produced.
- the reflectance at wavelength r is measured for the prepared first liquid coating film and the first dry coating film.
- a second liquid coating film of the same ingredients as the first liquid coating film was manufactured, and the weight and bias values obtained by applying the reflectance of the first liquid coating film and the first dry coating film were used to prepare a second dry coating film.
- the reflectance can be predicted.
- the second liquid paint film is dried and cured to perform the second drying process.
- the process of manufacturing the coating film can be omitted, and the reflectance of the second dry coating film can be predicted according to the prediction method according to the present invention.
- the method of predicting the color value of a dry paint from the color value of a liquid paint according to the present invention includes the steps of a) preparing the first to nth first liquid paint films of the same component; b) measuring the liquid reflectance 1st R wet for each of the 1st to nth first liquid coating films at wavelength r; c) drying and curing each of the 1st to nth first liquid coating films to produce the 1st to nth first dry coating films; d) measuring the dry reflectance 1st R Dry for each of the 1st to nth first dry coating films at wavelength r; e) Obtaining the weight value and bias value for the first liquid coating film at wavelength r using the following formula: , here When , R T is the transposed matrix of matrix R, and R -1 represents the inverse matrix of matrix R; f) manufacturing a second liquid coating film of the same composition as the first liquid coating film; g) measuring the liquid reflectance 2nd R wet for the second liquid coating film at wavelength
- Equation 1 the relationship between a liquid coating film at a wavelength r (nm) and a dry coating film dried and cured therefrom can be expressed by Equation 1 below.
- Equation 2 is expressed as a determinant for each of the 1st to nth liquid coating films and dry coating films manufactured with the same ingredients, it can be expressed as Equation 3 below.
- Equation 3 is calculated at wavelength r (nm) using the least square method. and can be obtained from Equation 4 below.
- R T is the transposed matrix of matrix R
- R -1 represents the inverse matrix of matrix R.
- the reflectance is measured at wavelength r (nm) for each of the first liquid coating film manufactured 1st to nth from the same component and the first dry coating film manufactured therefrom, and the measured reflectance is applied to Equation 4 to obtain wavelength r Weight and bias values can be obtained in (nm).
- a second liquid coating film of the same composition as the first liquid coating film is manufactured, the reflectance of the second liquid coating film is measured at the wavelength r (nm), and the measured reflectance is applied to Equation 2 to obtain You can find the reflectance.
- the color values CIE L*, a*, and b* of the second dry film can be obtained from the reflectance of the second dry film obtained from Equation 2.
- the tristimulus value For example, in the XYZ colorimetric system, the tristimulus value
- the CIE L*, a*, b* colorimetric system can be obtained, for example, using the XYZ of the three stimulus values as follows.
- X n , Y n , and Z n are the tristimulus values of standard light.
- Example 1 Product name FU2300-LGREY
- the 1st to 10th first liquid coating films were prepared. Specifically, the 1st to 10th first liquid paints were each manufactured using the same ingredients used in the production of the product name FU2300-LGREY. Each of the prepared 1st to 10th first liquid paints was applied to a concealing paper with a thickness of 25 ⁇ m to prepare the 1st to 10th first liquid paint films. For each of the manufactured first liquid coating films, within 1 minute, use non-contact colorimetric equipment was measured.
- the viscosity was adjusted by adding a diluent (TH0254(N)) according to the paint viscosity (paint viscosity: 25°C, Ford cup #4 26 ⁇ 28sec).
- a diluent TH0254(N)
- paint viscosity 25°C, Ford cup #4 26 ⁇ 28sec.
- each of the first liquid paints was applied to the electrodeposition-coated 90x200mm CR steel plate at a thickness of 35 ⁇ 3 ⁇ m in 2-3 round trips using an air spray, left at room temperature (10 ⁇ 30°C) for 5 ⁇ 10 minutes, and then dried for 150 minutes. Cured for 30 min at °C. Afterwards, using colorimetric equipment
- Weight and bias values were obtained from the measured first liquid paint reflectance and first dry paint reflectance at 10 nm intervals in the wavelength range of 400 nm to 700 nm.
- Example 1 for each of product name FU2300-WHITE PEARL BASE (D) (Example 2), FU2300-DGREY (Example 3), FU2300-Shimmering Silver (Example 4), and FU2300-Nocturne Gray (Example 5) By performing the process, the weight and bias values at each wavelength were obtained.
- Weight values and bias values at each wavelength are shown in Tables 1 to 3 below.
- the color difference range of CIE L*, a*, b* between the predicted value and the measured value of the second dry coating film is It may be 0.5 or less, or 0.4 or less. That is, the predicted values of CIE L*, a*, b* of the second dry coating film obtained from the dry reflectance 2nd R Dry and the measured values of CIE L*, a*, b* of the second dry coating film manufactured by drying and curing.
- the color difference ( ⁇ E*) may be 0.5 or less, or 0.4 or less.
- a method of predicting the color value of a dry paint from the color value of a liquid paint comprising: a) preparing 1st to nth first liquid paint films of the same component; b) measuring the liquid reflectance 1st R wet for each of the 1st to nth first liquid coating films at wavelength r; c) drying and curing each of the 1st to nth first liquid coating films to produce the 1st to nth first dry coating films; d) measuring the dry reflectance 1st R Dry for each of the 1st to nth first dry coating films at wavelength r; e) Obtaining the weight value and bias value for the first liquid coating film at wavelength r using the following formula: , here When , R T is the transposed matrix of matrix R, and R -1 represents the inverse matrix of matrix R; f) manufacturing a second liquid coating film of the same composition as the first liquid coating film; g) measuring the liquid reflectance 2nd R wet for the second liquid coating film at wavelength r; and
- Step a) is preparing each of the 1st to nth first liquid paints made from the same ingredients, where n is an integer of 2 or more; And applying each of the 1st to nth first liquid paints to the object to produce the 1st to nth first liquid paint films.
- Step f) is preparing a second liquid paint with the same ingredients as the first liquid paint; and applying the second liquid paint to the object to produce a second liquid paint film.
- a method of predicting the dry paint color value from the liquid paint color value characterized in that is 0.5 or less.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectrometry And Color Measurement (AREA)
- Paints Or Removers (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Claims (5)
- 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법에 있어서,a) 동일 성분의 1번째 내지 n번째 제1 액상도막을 제조하는 단계;b) 파장 r에서, 1번째 내지 n번째 제1 액상도막 각각에 대하여 액상반사율 1stRwet을 측정하는 단계;c) 1번째 내지 n번째 제1 액상도막 각각을 건조 및 경화시켜 1번째 내지 n번째 제1 건조도막을 제조하는 단계;d) 파장 r에서, 1번째 내지 n번째 제1 건조도막 각각에 대하여 건조반사율 1stRDry를 측정하는 단계;e) 하기 수식에 의해, 파장 r에서, 제1 액상도막에 대한 가중치(Weight) 값과 바이어스(Bias) 값을 구하는 단계:여기서,RT는 행렬 R의 전치행렬(Transposed Matrix)이며,R-1은 행렬 R의 역행렬(Inverse Matrix)을 나타냄;f) 제1 액상도막과 동일 성분의 제2 액상도막을 제조하는 단계;g) 파장 r에서, 제2 액상도막에 대하여 액상반사율 2ndRwet을 측정하는 단계; 및h) 단계 e)의 가중치(Weight) 값과 바이어스(Bias) 값, 그리고 단계 g)의 2ndRwet을 하기 수식에 적용하여, 파장 r에서 제2 건조도막에 대한 건조반사율 2ndRDry를 구하는 단계:를 포함하는, 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법.
- 청구항 1에 있어서,단계 a)는동일 성분으로 제조된 1번째 내지 n번째 제1 액상도료 각각을 제조하는 단계, 여기서 n은 2 이상의 정수임; 및1번째 내지 n번째 제1 액상도료 각각을 피도물에 도포하여 1번째 내지 n번째 제1 액상도막을 제조하는 단계;를 포함하는, 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법.
- 청구항 2에 있어서,단계 f)는제1 액상도료와 동일 성분의 제2 액상도료를 제조하는 단계; 및제2 액상도료를 피도물에 도포하여 제2 액상도막을 제조하는 단계;를 포함하는, 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법.
- 청구항 1부터 청구항 3 중 어느 하나의 청구항에 있어서,i) 단계 h)의 건조반사율 2ndRDry로부터 제2 건조도막의 CIE L*, a*, b*의 예측값을 구하는 단계;를 더욱 포함하는, 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법.
- 청구항 4에 있어서,건조반사율 2ndRDry로부터 구한 제2 건조도막의 CIE L*, a*, b*의 예측값과 제2 건조도막의 CIE L*, a*, b*의 측정값의 색차(ΔE*)가 0.5 이하인 것을 특징으로 하는, 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/861,378 US20250347560A1 (en) | 2022-05-04 | 2023-05-02 | Method for predicting dry paint color value from liquid paint color value |
| CN202380037133.3A CN119452232A (zh) | 2022-05-04 | 2023-05-02 | 从液体涂料颜色值预测干涂料颜色值的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0055764 | 2022-05-04 | ||
| KR1020220055764A KR102679700B1 (ko) | 2022-05-04 | 2022-05-04 | 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023214767A1 true WO2023214767A1 (ko) | 2023-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/005964 Ceased WO2023214767A1 (ko) | 2022-05-04 | 2023-05-02 | 액상도료 색상값으로부터 건조도료 색상값을 예측하는 방법 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250347560A1 (ko) |
| KR (1) | KR102679700B1 (ko) |
| CN (1) | CN119452232A (ko) |
| WO (1) | WO2023214767A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004305987A (ja) * | 2003-04-10 | 2004-11-04 | Kansai Paint Co Ltd | 測色用着色膜の形成方法、測色方法、及び調色方法 |
| JP2005030923A (ja) * | 2003-07-14 | 2005-02-03 | Kikusui Chemical Industries Co Ltd | 着色液体の色の検査方法 |
| JP2006099796A (ja) * | 2000-07-12 | 2006-04-13 | Nippon Paint Co Ltd | 塗料製造方法、塗装方法及び塗料製造データ管理システム |
| JP2012200680A (ja) * | 2011-03-25 | 2012-10-22 | Kansai Paint Co Ltd | 塗膜形成方法及び塗装物品 |
| JP7033056B2 (ja) * | 2018-12-25 | 2022-03-09 | 株式会社Screenホールディングス | 色予測モデル構築方法、色予測方法、および色予測モデル構築プログラム |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650816A (ja) * | 1992-08-03 | 1994-02-25 | Mitsubishi Heavy Ind Ltd | 着色液体の乾燥塗膜色の推定方法 |
| KR102191784B1 (ko) | 2020-03-13 | 2020-12-16 | (주)파버나인 | 액상도료 검사키트가 구비된 전착도장시스템 |
-
2022
- 2022-05-04 KR KR1020220055764A patent/KR102679700B1/ko active Active
-
2023
- 2023-05-02 WO PCT/KR2023/005964 patent/WO2023214767A1/ko not_active Ceased
- 2023-05-02 US US18/861,378 patent/US20250347560A1/en active Pending
- 2023-05-02 CN CN202380037133.3A patent/CN119452232A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006099796A (ja) * | 2000-07-12 | 2006-04-13 | Nippon Paint Co Ltd | 塗料製造方法、塗装方法及び塗料製造データ管理システム |
| JP2004305987A (ja) * | 2003-04-10 | 2004-11-04 | Kansai Paint Co Ltd | 測色用着色膜の形成方法、測色方法、及び調色方法 |
| JP2005030923A (ja) * | 2003-07-14 | 2005-02-03 | Kikusui Chemical Industries Co Ltd | 着色液体の色の検査方法 |
| JP2012200680A (ja) * | 2011-03-25 | 2012-10-22 | Kansai Paint Co Ltd | 塗膜形成方法及び塗装物品 |
| JP7033056B2 (ja) * | 2018-12-25 | 2022-03-09 | 株式会社Screenホールディングス | 色予測モデル構築方法、色予測方法、および色予測モデル構築プログラム |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119452232A (zh) | 2025-02-14 |
| US20250347560A1 (en) | 2025-11-13 |
| KR20230155912A (ko) | 2023-11-13 |
| KR102679700B1 (ko) | 2024-06-27 |
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