JPH0767791B2 - Decorative board having uneven pattern and method of manufacturing the same - Google Patents

Description

Description: [Industrial field of application] The present invention relates to a decorative board coated with a wood fiber having an uneven pattern on its surface and a manufacturing method.

[Prior art and its problems]

The following proposals have been made for a decorative board coated with wood fibers.

B. As shown in Japanese Examined Patent Publication No. 40-14990, an uneven surface pattern is formed on the article, and a transparent paint is applied to the entire surface of the pattern. The pigment in the paint is allowed to settle in the concave part of the pattern, and the convex part of the pattern is transparent. It is designed so that only layers can be formed.

In this proposal, the convex portion of the pattern expresses the other color of the article through the transparent layer and the concave portion is colored by the sedimentation of the pigment in the paint, but the color is monochromatic and the design is monotonous. is there.

In addition, as in Japanese Utility Model Publication No. 50-10475 filed by the present applicant, “A sealer coating layer is layered on the convex outer surface of a substrate made of wood fiber, and an opaque coating film is formed on the surface and the concave outer surface. It is also proposed that "a coated board having an uneven pattern formed by layering the coating thickness of the semitransparent coating layer on the concave surface to be thicker than that on the convex surface" ing.

This proposal forms a sealer coating layer on the convex outer surface with a low specific gravity to prevent the absorption of the colored paint applied to the surface, thus forming a uniform colored coating layer regardless of the surface density of the uneven outer surface. After that, the semitransparent coating layer is applied so that the semitransparent coating layer is layered so that the concave outer surface portion where the convex outer surface portion leads to the opaque coating layer surface becomes thick. Therefore, on the convex surface, the color tone of the opaque coating layer is emphasized through the thin semi-transparent coating layer, and on the concave surface, the color tone of the opaque coating layer is almost hidden by the semi-transparent coating layer. The color tone of the film layer is emphasized.

Further, even in the intermediate portion from the convex surface to the concave surface, the semi-transparent coating layer is configured to be thicker according to the depth of the concave portion, so that the change in color tone between the convex surface and the concave surface is the same as the difference in shade of the same paint. There is no fault, and it causes a natural color change.

However, although it has been improved in design, it is necessary to form two layers of a colored coating layer and a semi-transparent coating layer, which complicates the production line, and the difference in shade of the same coating causes little change. I have left.

(Means for Solving Problems and Actions Thereof) The present invention has the following configuration in order to solve the above problems. That is, when a decorative board made of wood fiber is applied, a concavo-convex pattern consisting of concave parts having a high surface density and convex parts 3 having a coarse density is formed first, and the specific gravity is high on the entire surface on which the concavo-convex pattern is formed. Applying a colored paint 4 in which a large particle high specific gravity pigment 4a having a large particle size, a large particle large pigment 4a having a different color tone, and a specific gravity lower than that of the pigment 4a, and a small particle low particle specific gravity pigment 4b having a small particle size are arbitrarily mixed. Then, the large particle high specific gravity pigment 4a settles on the surface of the concave portion 2,
The small particle low specific gravity pigment 4b is formed on the upper surface of the concave coating film layer A, and the convex portion 3 is penetrated into the substrate 1 by the small particle low specific gravity pigment 4b, and the large particle high specific gravity pigment is formed on the surface. 4a forms each of the convex coating film layers B forming a layer.

The present invention, by adopting the above-mentioned configuration, has an uneven pattern portion.
In 2 and 3, colored coating layers A and B having different colors can be obtained in a single coating step. That is, a coating layer having a high design property can be obtained by a simple process.

Examples of the present invention will be described below.

(Description of Embodiments) FIGS. 1 to 3 show a first embodiment of the present invention.

1 to 3, the base material 1 is a fiber board produced by compression molding wood fibers obtained by a usual method.

The base material is not particularly limited as long as it is a base material that can absorb the paint instead of the fiber board.

First, as shown in FIG. 1, an uneven pattern is formed on the surface of the substrate 1 by an embossing roll, an embossing plate, or the like. At that time, due to the pressing of the embossing device, the concave portions 2 become dense and the convex portions 3 become rough.

Next, as shown in FIG. 2, a large particle high specific gravity pigment 4a having a high specific gravity and large particles on the entire surface on which an uneven pattern is formed and a large particle high specific gravity pigment 4a have different color tones, and a specific gravity higher than that of the pigment 4a. A colored paint 4 optionally mixed with small particles and small particles and low specific gravity pigment 4b is applied almost uniformly using a coating device.

Then, when left for a while, the colored coating material 4 forms the recess coating layer A as shown in FIG. 3 without being sucked into the base 1 because the density of the base 1 in the recess 2 is high.

The concave portion colored coating film A has a large particle high specific gravity pigment 4a in the colored coating material 4.
Since the small particle low specific gravity pigment 4b is mixed with the large particle high specific gravity pigment 4a, the small particle low specific gravity pigment 4b is configured so that the small particle low specific gravity pigment 4b forms a layer on the upper part thereof.

Therefore, the coating film layer A of the concave portion 2 has a thick coating film and the small particle low specific gravity pigment 4b is expressed in a deep color tone.

By changing the addition amount of the small particle low specific gravity pigment 4b, for example, by decreasing it, the color tone of the upper layer containing the low specific gravity pigment 4b is transmitted, and the large particle high specific gravity pigment 4a that settles in the lower portion of the coating layer A
The subtle color change is obtained due to the effect of the color tone of.

In the convex portion 3, the coloring paint 4 has a rough density of the convex portion 3, and therefore a part thereof is sucked into the base material 1 to form the convex coating film layer B.

The convex colored coating layer B is a large particle high specific gravity pigment 4a in the colored paint 4.
And the small particle low specific gravity pigment 4b are mixed with each other, so that the paint 4 is attracted to the flow accompanied with the suction into the base material 1,
A small particle small particle low specific gravity pigment 4b is sucked into the substrate 1 together with the coating material 4 and a large particle large particle high specific gravity pigment 4a having a large particle size is left in the convex portion 3 to form a layer. It

Therefore, the coating film thickness of the convex coating film layer B of the convex portion 3 is slightly thin, and the color tone of the high specific gravity pigment 4a having large particles is expressed deeply.

By changing the addition amount of the small particle low specific gravity pigment 4b or the large particle high specific gravity pigment 4a, the proportion of the small particle low specific gravity pigment 4b remaining in the coating layer B in the convex portion 3 changes, and a different color tone is obtained. The color tones of 4a and 4b influence and appear, and a subtle color change is obtained. This color change can also be obtained by changing the addition amount of the large particle high specific gravity pigment 4a. If necessary, top coating may be applied to the entire front surface of the substrate 1 on which the concave coating layer A is formed on the concave portion 2 and the convex coating layer B is formed on the convex portion 3.

And since the colors of the large particle high specific gravity pigment 4a and the small particle low specific gravity pigment 4b are changed, the colors of the uneven portions 2 and 3 can be changed,
Useful for improving the design.

〔The invention's effect〕

By using a colored paint in which a large particle high specific gravity pigment 4a and a small particle low specific gravity pigment 4b are mixed, the color difference between the convex and concave portions of the surface unevenness pattern appears due to the difference in the absorption of the coating material into the substrate. The
And it can be done with one color painting. Further, the color change can be easily made subtly by changing the addition amount of each pigment 4a, 4b.

[Brief description of drawings]

FIG. 1 shows a step of applying an uneven pattern in the method of the present invention. FIG. 2: Shows the state immediately after the coating of the paint. FIG. 3: Shows the final state of application of paint. 1: base material, 2: concave portion, 3: convex portion, 4: paint, 4a: large particle high specific gravity pigment, 4b: small particle low specific gravity pigment, A: concave coating layer, B: convex coating layer.

Claims (2)

[Claims] 1. A decorative board having a concave-convex pattern 3 consisting of densely-concave concave portions 2 and coarse-density convex portions 3 on a surface made of wood fibers. High particle large particle high specific gravity pigment 4a is settled, small particle low particle specific gravity pigment 4b having a different color tone from the large particle high specific gravity pigment 4a and a specific gravity lower than the pigment 4a layered on top of it In the convex portion 3 of the concave coating layer A, the small particle low specific gravity pigment 4b in the colored coating material 4 is penetrated into the base material 1 and the large particle high specific gravity pigment 4a forms a layer on the surface thereof. Partial coating layer B is formed respectively, and a decorative plate having an uneven pattern on the surface. 2. A concavo-convex pattern 3 comprising concave portions 2 having a high density and convex portions 3 having a high density on a surface of a base material 1 made of wood fibers.
Engraved on the entire surface of the surface where the uneven pattern is formed, a high-specific gravity large-particle large-particle high-specific gravity pigment 4a, and a low specific gravity small-particle small-particle low-specific gravity pigment 4b 4, the large particle high specific gravity pigment 4a is settled on the surface of the concave portion 2, and the small particle low specific gravity pigment 4b is layered on the concave portion coating layer A, and the convex portion 3 has the base material 1 Manufacturing of a decorative board having a concavo-convex pattern, characterized in that a small particle low specific gravity pigment 4b is infiltrated therein, and a large particle high specific gravity pigment 4a is formed on the surface thereof as a convex coating layer B, respectively. Method.