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Laminated Coated Thin Film Structure

A film structure and coating technology, applied in the field of lamination coating film structure, can solve the problems of easy fading and difficulty in obtaining bright coloring

Active Publication Date: 2016-03-30
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For such a structure, when the first coating film a is directly laminated on the electrodeposited coating film e, there is no need to provide such as figure 2 In the case of intermediate coating as shown, there is a problem that it is difficult to obtain vivid coloring
However, although the dyes have good selective absorption properties, they also have the problem of being easily faded due to ultraviolet rays

Method used

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  • Laminated Coated Thin Film Structure
  • Laminated Coated Thin Film Structure
  • Laminated Coated Thin Film Structure

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Embodiment Construction

[0017] In view of the above circumstances, the inventors of the present invention conducted various studies and concentrated on the difference between the light absorption and reflection abilities of the same kind of pigments having different particle diameters.

[0018] The inventors of the present invention speculate that the difference in light absorption and reflection ability of the pigment due to the particle diameter is due to the reason described below. As mentioned earlier, the reason why a pigment is colored in a specific color is that the reflectance of light of the pigment differs depending on the wavelength, and the pigment reflects light of a wavelength having a specific color and absorbs light of other wavelengths. Thus, in the case of red, for example, when short and medium wavelength light is effectively absorbed by the pigment and long wavelength light is effectively reflected, a vivid red color is produced.

[0019] Here, the wavelength of a specific color r...

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Abstract

One aspect of the present invention is a laminated coating film structure having a laminated coating film that renders a specific color on a coated object, wherein the laminated coating film is provided with a first layer arranged on the side close to the coated object and containing a pigment in which the mean particle diameter is ½ or more the wavelength of the specific color but 2 um or less, and a second layer arranged on the side far from the coated object and containing a pigment in which the mean particle diameter is 0.05 um or more but less than ½ the wavelength of the specific color.

Description

technical field [0001] The present invention relates to a laminated coating film structure formed on a vehicle outer panel or the like. Background technique [0002] In the case of coating metal parts that require weather resistance, such as vehicle exterior panels, a laminated coating film structure is typically used: After coating by electrodeposition to form an underlying coating film (undercoat coating film) in order to prevent rust After that, an intermediate coating film having the ability to hide the underlying layer is formed on the laminated coating film structure, followed by laminating the upper coating film (top coating film) thereon. Although the intermediate coating film is set to enhance light resistance, chipping resistance, and coloring, attempts have been made to directly coat the upper layer on the lower coating film from the viewpoints of resource conservation, reduction of production steps, cost reduction, etc. The films are laminated without providing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/24B05D1/36B32B27/00B32B27/20
CPCB05D7/14B05D5/061B05D7/577
Inventor 山根贵和久保田宽中野樱石桥毅子
Owner MAZDA MOTOR CORP