JP3207249B2 - Coating structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating technique in which a retroreflective material comprising at least one bead made of glass or resin is laid on a surface of an object to be coated, and more particularly to a method of imparting a coloring effect to reflected light. To improved coating structures.

[0002]

2. Description of the Related Art In recent years, there has been known coating in which a retroreflective material made of transparent fine beads made of glass or resin is laid on the surface of an object to be coated. According to this coating, condensed light and disturbance light can be viewed in various forms by utilizing the optical effect that light incident on the retroreflective material is emitted as reflected light in the same direction, that is, the recursive light. It can be used to obtain a jewel-like coating effect with high brightness and excellent color tone. In other words, the paint itself shines, which can have a strong impact on the viewer.

[0003] In such a coating, a coating film structure has been devised for imparting a coloring effect to reflected light (for example, JP-A-63-229176). This structure forms a reflective layer with a smooth and continuous reflective surface on the surface of the object to be coated,
In this method, beads as a retroreflective material are spread on the reflection surface of the reflection layer, and a colored clear layer is formed.

FIG. 3 illustrates such a conventional coating film structure. That is, a reflective layer 3 is formed on the surface of the object 1 via an undercoat layer (intermediate layer) 2, and beads 5 serving as a retroreflective material are formed on the surface via a binder layer (adhesive layer) 4.
, And a colored clear layer 6 of an arbitrary color is formed as the outermost layer. As a result, a specific color is emphasized by the colored clear layer 6, and retroreflected light colored to a similar color is obtained.

[0005]

However, in the above-mentioned conventional coating film structure, there is a problem that the surface of the object to be coated is shaded due to the difference in the intensity of the reflected light. As a result found by the inventor, as shown in FIG. 4, since the entire coating film surface side is covered with the colored clear layer 6, there is a difference in the passing length in the colored clear layer 6 depending on the incident angle of light. In the portion A where the passing length is small, the lightness is high because the absorption amount of the reflected light is small, while the portions B and B where the passing length is large
In C, it was found that the brightness gradually decreased.

That is, in the conventional structure, light and dark appear depending on the viewing angle (the light gradually changes from light to dark from part A to part B and part C), and as a result, a shadow is produced.

Further, in such a conventional coating film structure, the color of the retroreflection light is limited to only one color emphasized by the colored clear layer 6, and the luster is reduced, resulting in a lack of interest. Dissatisfaction could also occur.

The present invention has been made in view of such circumstances, and an object of the present invention is to reduce or prevent the occurrence of shading and obtain a colored retroreflection with extremely high brightness as a whole, while observing the viewing angle. It is an object of the present invention to provide a coating film structure which can obtain reflected light other than colored light depending on the light source, and can enhance the sense of interest by light of a plurality of colors.

[0009]

In order to achieve the above object, the present invention provides a method for forming a reflective layer having a smooth and continuous reflective surface on the surface of an object to be coated, and forming the reflective layer on the reflective surface of the reflective layer. In a coating film structure in which a colored clear layer is formed while laying down a retroreflective material made of at least one bead made of glass or resin, the colored clear layer has a thickness substantially flush with the outermost surface of the retroreflective material. And a transparent clear layer is formed on the surface side of the retroreflective material and the colored clear layer to cover them.

[0010]

According to the present invention, since the colored clear layer is set to have a thickness up to a position substantially equivalent to the height of the beads, there is almost no influence of the colored clear layer on light in the retroreflection direction. Retroreflected light strongly affected by the reflective layer can be obtained.

On the other hand, in the directions other than the recursive direction, all the light strongly influenced by the colored clear layer can be obtained with a constant brightness without unevenness.

As a result, reflected light of a plurality of colors can be obtained depending on the viewing angle, the posture, the shape, and the like of the object to be coated, and the reflected light that is extremely interesting can be obtained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In this embodiment, for example, the body of an automobile is applied as the object to be coated.

As shown in FIG. 1, a vehicle body 1, which is an object to be coated,
On one surface, a reflective layer 13 is formed via an undercoat layer 12. On the surface of the reflective layer 13, at least one of microscopic beads 15 made of glass or resin as a retroreflective material is spread via a binder layer 14, and a translucent layer colored, for example, red, That is, the colored clear layer 16 is formed.

In this case, the colored clear layer 16 comprises
The thickness is set to be substantially flush with the outermost surface of the beads 15 and is uniform. That is, the surface of the beads 15 and the surface of the colored clear layer 16 are made to be substantially the same height over the entire painted surface. Also bead 15
On the surface side of the colored clear layer 16, a transparent clear layer 17 that covers them is formed.

According to the coating film structure having such a structure, FIG.
As shown in FIG.
The light (indicated by arrows a, b, and c in FIG. 2) which enters from '′ and C' and exits in the retroreflection direction does not pass through the colored clear layer 16, so that it is almost absorbed by the colored clear layer 16. Absent. Therefore, the retroreflection intensity is strong, and is not influenced by the color of the colored clear layer 16, and is strongly influenced by the reflection layer 13, and the brightness is strong and looks like a mirror. Also, depending on the angle, a spectral effect (prism effect) like a rainbow can be obtained.

On the other hand, light (for example, the arrow d in FIG. 2) in the direction other than the return direction is strongly influenced by the colored clear layer 16 as it passes through the colored clear layer 16 and is emitted as colored light. In this case, the colored clear layer 16 according to the present embodiment
Unlike conventional ones, there is no change in thickness due to the presence or absence of the beads 15 and the thickness is uniform, so that no shading or the like occurs. In addition, since the thickness of the colored clear layer 16 is smaller than that of the related art, light having a high glitter can be obtained.

Therefore, according to the present embodiment, the colored clear layer 16 is set to a thickness substantially equal to the height of the beads 15 so that the colored clear layer 16 is hardly affected by the light and the retroreflected light strongly influenced by the reflective layer 13 is obtained. On the other hand, in the direction other than the retroreflection direction, the light strongly influenced by the colored clear layer 16 is obtained with substantially constant lightness without unevenness. And as a result,
It has dichroism depending on the viewing angle, the shape of the object to be coated, and the like. Then, the reflected light has a strong brilliancy and is very interesting.

[0019]

As described above, according to the present invention, it is possible to reduce or prevent the occurrence of shadows, to obtain a colored retroreflected light having an extremely high brightness as a whole, and to reflect reflected light other than the colored light depending on the viewing angle. Thus, effects such as an improvement in amusement by the light of a plurality of colors can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention.

FIG. 2 is an operation explanatory view of the embodiment.

FIG. 3 is a sectional view showing a conventional example.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 object to be coated 13 reflective layer 15 beads (retroreflective material) 16 colored clear layer 17 transparent clear layer

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makoto Aizawa 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Corporation (72) Inventor Toru Machida 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Inside (72) Inventor Hiroko Umeda 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Kazuo Hironaka 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda ( 56) References JP-A-63-229176 (JP, A) JP-A-4-59252 (JP, A) JP-A-63-291086 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , (DB name) B32B 1/00-35/00 B05D 5/06 G09F 13/16 G09F 3/02

Claims (1)

(57) [Claims] 1. A reflective layer having a smooth and continuous reflective surface is formed on the surface of an object to be coated, and a retroreflective material comprising at least one bead made of glass or resin is provided on the reflective surface of the reflective layer. In the coating structure in which the colored clear layer is formed while being spread, the colored clear layer is set to a thickness substantially flush with the outermost surface of the retroreflective material, and the surface of the retroreflective material and the colored clear layer is set. A coating structure, wherein a transparent clear layer covering these is formed on the side.