System for matching coarseness appearance of coatings

Patent metadata

Field	Value
Publication number	US-10746376-B2
Application number	US-201715659430-A
Country	US
Kind code	B2
Filing date	Jul 25, 2017
Priority date	Jul 25, 2017
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

Systems and method for matching appearance of a target coating on a substrate is provided herein. The system includes a coating chip including a chip coating layer. The chip coating layer has a chip coarseness. The system further includes an illumination component configured to illuminate the chip coating layer with a light having an illumination color. The chip coating layer exhibits the chip coarseness and the illumination color in the presence of the light having the illumination color. The chip coating layer exhibiting the chip coarseness and the illumination color is utilized for matching the appearance of the target coating.

First claim

What is claimed is:

1. A method for matching appearance of a target coating having a target color and a target coarseness on a substrate, the method comprising:
providing a first coating chip comprising a first chip coating layer having a first chip coarseness;
providing a second coating chip comprising a second chip coating layer having a second chip coarseness that is different from the first chip coarseness;
selecting an illumination color having a hue angle of no greater than about 30° to the target color from a plurality of predefined colors;
illuminating at least one of the first chip coating layer and the second chip coating layer with a light having the illumination color;
wherein the first chip coating layer exhibits the first chip coarseness and the illumination color in the presence of the light having the illumination color, and
wherein the second chip coating layer exhibits the second chip coarseness and the illumination color in the presence of the light having the illumination color; and

obtaining a target coarseness value corresponding to the target coarseness based on the first chip coarseness of the first chip coating layer and the second chip coarseness of the second chip coating layer for matching the appearance of the target coating.

2. The method according to claim 1 , wherein obtaining the target coarseness value comprises:
selecting from the first coating chip and the second coating chip a matching coating chip having a coarseness that matches the target coarseness; and
producing the target coarseness value based on the coarseness of the matching coating chip.

3. The method according to claim 1 , wherein illuminating at least one of the first chip coating layer and the second chip coating layer with a light having the illumination color comprises:
generating a light having a first color; and
aligning the light having the first color with at least one of the first chip coating layer and the second chip coating layer such that at least one of the first chip coating layer and the second chip coating layer is illuminated with the light having the first color.

4. The method according to claim 1 , wherein illuminating at least one of the first chip coating layer and the second chip coating layer with a light having an illumination color comprises:
generating a light having a first color;
providing a filter configured to receive the light having the first color and emit a light having a second color; and
aligning the filter with the light having the first color and at least one of the first chip coating layer and the second chip coating layer such that at least one of the first chip coating layer and the second chip coating layer is illuminated with the light having the second color.

5. The method according to claim 1 , wherein the first chip coating layer and the second chip coating layer have a first chip lightness, and wherein the method further comprises:
providing a third coating chip comprising a third chip coating layer having;
a second chip lightness that is different from the first chip lightness, and
a third chip coarseness;

providing a fourth coating chip comprising a fourth chip coating layer having;
the second chip lightness, and
a fourth chip coarseness that is different from the third chip coarseness;

obtaining target color data of the target coating and producing a target lightness value based on the target color data;
selecting at least one of the first chip coating layer, the second chip coating layer, the third chip coating layer, and the fourth chip coating layer having a chip lightness that substantially matches the target lightness value;
illuminating the one or more chip coating layers selected with the light having the illumination color;
wherein the first chip coating layer exhibits the first chip coarseness, the first chip lightness, and the illumination color in the presence of the light having the illumination color,
wherein the second chip coating layer exhibits the second chip coarseness, the first chip lightness, and the illumination color in the presence of the light having the illumination color,
wherein the third chip coating layer exhibits the third chip coarseness, the second chip lightness, and the illumination color in the presence of the light having the illumination color, and
wherein the fourth chip coating layer exhibits the fourth chip coarseness, the second chip lightness, and the illumination color in the presence of the light having the illumination color; and
obtaining a target coarseness value corresponding to the target coarseness based on the first chip coarseness of the first chip coating layer, the second chip coarseness of the second chip coating layer, the third chip coarseness of the third chip coating layer, and the fourth chip coarseness of the fourth chip coating layer for matching the appearance of the target coating.

Assignees

• Axalta Coating Systems Ip Co

Inventors

• Steenhoek Larry E
• Kuepper Wolfgang

Classifications

• G01J3/504 Primary

  Goniometric colour measurements, for example measurements of metallic or flake based paints · CPC title

• G01J3/52

  using colour charts · CPC title

• G01J2003/106

  the two sources being alternating or selectable, e.g. in two ranges or line:continuum · CPC title

• G01J2003/104

  Monochromatic plural sources · CPC title

• G01J3/0272

  Handheld · CPC title