JPH0829299B2 - Colored painting method that gives a sense of depth - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of applying colored metallic coating to a transparent synthetic resin part that constitutes an automobile exterior part, and particularly, in terms of appearance. The present invention relates to a colored coating method improved so as to give a sense of depth.

[Conventional technology]

In the present invention, the exterior parts for automobiles refer to parts that appear in the appearance of the vehicle body, such as vehicle lighting, garnish, finisher, and the like.

Among the members that make up such exterior parts, while being made of a transparent synthetic resin material with a design effect in mind,
Not a few of them are metallically coated on their inner surfaces with a colored transparent coating film.

FIG. 3 shows a conventional example in which a colored coating is applied on a plate-shaped substrate 1 made of a transparent synthetic resin.

A colored transparent coating film 4 is formed by coating with the spray gun 2 as shown in FIG.
The metallic coating film 5 is applied on top of it by '.

FIG. 4 is a schematic diagram of a cross section of the transparent member colored and coated in this way.

When this member is illuminated from the direction of arrow A and viewed in the direction of arrow B, most of the illumination light passes through the transparent substrate 1 and further through the colored transparent coating film 4, and the metallic Reflected by the coating 5 and colored transparent coating 4 again
And passes through the transparent substrate 1 to reach the observer.

In the above-mentioned route, light of a specific wavelength is selectively absorbed when passing through the colored transparent coating film 4, and in combination with the selective reflection by the metallic coating film 5, a unique color tone is revealed.

[Problems to be Solved by the Invention]

Colored transparent member 1 according to the prior art described above.
In FIG. 4, there is no sense of depth on the coated surface, and there is a difference in color appearance between when viewed in the direction of arrow B and when viewed in the direction of arrow C.

As a result, there is little sense of unity (continuity) between the transparent substrate 1 and the mating component.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a colored coating method that gives a feeling of depth.

If a sense of depth is obtained, the texture of the product is improved and a sense of unity with the mating parts is created.

Moreover, even if the viewing direction is changed, the change in color appearance (color tone difference) is reduced.

[Means for solving the problem]

The basic principle of the method of the present invention created to achieve the above-mentioned object will be briefly described as follows.

Assuming a case where the present invention is applied to the conventional example shown in FIG. 4 and improved, a colorless and transparent coating film (a light-color coating film may be provided) is provided between the substrate 1 and the spot transparent coating film 4. .

Looking at the state in which the colorless or light-colored transparent coating film is provided, referring to FIG. 2 corresponding to one embodiment of the present invention, the base 1
Between the colored transparent coating film 4 and the colored transparent coating film 3
Is interposed.

[Work]

As shown in FIG. 2, when a colorless or light-colored transparent coating film 3 is provided, when it is viewed in the direction of arrow B or arrow C, the colored transparent coating film 4 and the metallic coating film 5 are transparent. You will be visible beyond 3.

 This creates a sense of depth.

〔Example〕

FIG. 1 is a process drawing showing one embodiment of the colored coating method according to the present invention.

As shown in FIG. 1A, a colorless or light-colored transparent coating film 3 is applied to the inner side surface of the transparent synthetic resin substrate 1 (meaning the inner side surface in use, the upper surface in this figure) by a spray gun 2a. Configure. In this example, the coating film has excellent physical properties,
Moreover, it was constructed by using urethane-based paint which is easy to apply thick coating.

Then, as shown in FIG. 1B, the transparent coating film 3
A colored transparent coating film 4 is coated on the above with a spray gun 2b.

This colored transparent coating film 4 is a component similar to the colored transparent coating film 4 in the conventional example (Figs. 3 and 4), and the color arrangement is selected based on the consideration in the design, and is also called a design coating film. It is a thing.

Further, as shown in FIG. 3C, a metallic coating (in this example, aluminum coating) 5 is applied to form a back coat.

The cross section of the colored coating thus constructed is schematically shown in FIG. In this example, the colorless or light-colored transparent coating film 3 gives a sense of depth, and the texture and unity are remarkably improved.

〔The invention's effect〕

According to the colored coating method of the present invention, since a colorless (or light-colored) transparent coating film is interposed between the base material and the colored transparent coating film, a feeling of depth is produced, and the product texture is improved, and the combined parts are Has the effect of improving the sense of unity.

[Brief description of drawings]

FIG. 1 is a process drawing showing one embodiment of the colored coating method according to the present invention, and FIG. 2 is a schematic cross-sectional view of the colored coating portion constructed in the above embodiment. FIG. 3 is a process diagram showing a conventional example of a colored coating method, and FIG. 4 is a schematic sectional view of a colored coating portion constituted by the conventional example. 1 ... Transparent synthetic resin substrate, 3 ... Colorless or light-colored transparent coating film, 4 ... Colored transparent coating film, 5 ... Metallic coating film.

Claims (1)

[Claims] 1. A method for color-coating an automobile exterior component, wherein a metallic coating film is formed on the inner surface of a transparent synthetic resin via a colored transparent coating film, wherein the inner surface of the transparent synthetic resin is colorless or colored. A light-colored transparent coating film is formed, a colored transparent coating film is formed on the colorless or light-colored transparent coating film, and metallic coating is applied on the colored transparent coating film. Colored painting method that gives out.