JPH0615061B2 - Manufacturing method of lacquer board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention can be used for housing machines, furniture doors, top plates, wall decorations, etc., and is rich in decorativeness that satisfies the trend toward high quality and individualization. The present invention relates to a method for manufacturing a damachi-painting veneer.

[Prior Art and its Problems] Conventionally, the decorative boards used for housing machines, furniture doors, and top boards have been mainly printed plywood, polyester decorative boards, melamine decorative boards, and natural wood-coated decorative boards. These decorative boards have come to the present day in the direction of higher quality and more individuality.

In the manufacture of a decorative board, in order to satisfy high quality and individualization, the process becomes complicated, and a variety of products are produced in a small amount, resulting in a high cost.

[Means for Solving the Problems] The inventors of the present invention have made extensive studies in view of the above points, and as a result, found a method of forming a decorative surface that closely resembles a makie, which is a high-grade product, in a relatively simple process. The invention has been reached.

A description will be given below with reference to the drawings. 1 and 2 are partial cross-sectional views of a decorative plate obtained by the method of the present invention. FIG. 3 shows the dispersed state of the glittering substance in the thin convex pattern layer.

First, a desired base layer 2 is formed on the surface of the plate-shaped substrate 1.
Examples of the forming method include applying an opaque colored paint, printing a pattern, or sticking a colored sheet or a sheet on which a pattern is printed, or hot pressing a resin-impregnated decorative paper.

Next, a flat glittering substance 4 having a major axis of 10 to 200 μ was added to a thin film.
A convex pattern layer 3 having a film thickness of 30 to 200 μm is formed by screen printing using an ultraviolet curable ink having an excellent transparency, which is mixed in an amount of 1 to 5% by weight, and is then irradiated with ultraviolet rays to be cured. Since the glittering substance is randomly scattered in the convex layer, it reflects light rays in all directions, so that the glittering substance appears to be scattered on the underlayer, and looks like a makie. Is. The glittering substance is a pearl pigment,
Aluminum foil, a tense, fine material with a major axis of 10-200μ
The size of is used. As the ultraviolet curable ink, polyester-based, acrylic-based, urethane acrylate-based, and epoxy acrylate-based inks are used.

Then, a transparent resin layer 5 is formed of a transparent resin on the entire surface of the plate-shaped substrate 1 on which the convex pattern layer 3 is formed. The transparent resin layer 5 has a uniform thickness as shown in FIG. 1 to form a decorative plate having an uneven surface, and as shown in FIG. 2, the top of the convex pattern is thin and the recess is thick. As a result, a decorative board having a smooth surface can be obtained. As more numerous methods of forming the transparent resin layer 5, it is possible to apply the transparent resin only to the recesses and harden it, then polish the entire surface, and then apply the transparent resin to the entire surface. As the transparent resin, an ultraviolet curable resin similar to the ink forming the convex pattern layer is preferable because of good workability.

In order to improve scratch resistance, the transparent resin may be mixed with a transparent filler such as aluminum oxide powder and glass beads within a range that does not extremely reduce transparency.

When the major axis of the glittering substance is less than 10 μm, the reflecting surface is small and the number of reflected rays is small, resulting in poor glittering property.
If it exceeds the range, it is difficult to pass through the screen-printed gauze, the workability is poor, the cosmetic properties are poor, and the price rises.

Next, when the amount of the glittering substance mixed in the ink is less than 0.1% by weight, the reflected light rays are small, and when it exceeds 5% by weight, the reflected light rays are too much and the cosmetic properties are poor.

When the thickness of the convex pattern layer is less than 30 μm, most of the flat glittering substances are in a state of overlapping horizontally in the convex pattern layer as shown in FIG. It does not show the hardening of makie. On the other hand, 200μ
If it exceeds, the curing time will be long, molding will be difficult, and workability will be poor.

Further, when the solid content of the ink is less than 90%, the eye loss occurs after the convex pattern is formed, and most of the glittering substances mixed in the process are overlapped horizontally in the convex pattern layer. It reflects only light rays and does not show the effect of makie.

[Examples] The present invention will be described in more detail with reference to Examples.

Example 1 A black diallyl phthalate resin-impregnated paper was hot-pressed on the surface of an essential fiber board to form a base layer. Next, a urethane acrylate resin-based UV curable ink (solid content 100%) containing 5% by weight of a pearl pigment (major axis 10 to 60 μm) added.
%) Was used to form a convex pattern layer of arabesque small pattern pattern having a thickness of 100 μm by screen printing and was irradiated with ultraviolet rays to be cured. A # 100 screen plate gauze was used to form the convex pattern layer.

Next, a transparent polyester resin-based UV-curable coating material is applied by a reverse coater to the portion where the convex pattern layer is not formed, that is, the recessed portion, the surface is polished by irradiating with ultraviolet rays and cured, and the entire surface is transparent. A urethane acrylate-based UV curable paint was applied to obtain a decorative board that closely resembles a makie.

[Effects of the Invention] As described above, in the decorative board obtained by the method of the present invention, since the glittering substance added in the convex pattern layer is scattered in random directions, light rays in all directions are scattered. Since the light is reflected, it appears as if the glittering substance was scattered on the underlying layer, which gives a makie effect.

Further, when the transparency of the transparent resin layer applied to the concave portions is different from that of the convex pattern layer, a greater depth can be obtained. Further, in the method for producing a decorative board of the present invention, since the decorative surface is formed by screen printing, which is easy to make a plate, the cost does not increase significantly even in the case of producing a wide variety of products in a small quantity due to individualization.

[Brief description of drawings]

1 and 2 are partial cross-sectional views of a decorative plate obtained by the method of the present invention. FIG. 3 is a partial sectional view showing a dispersed state of the glittering substance added to the thin convex pattern layer. 1 ... Plate-shaped substrate 2 ... Underlayer 3 ... Convex pattern layer 4 ... Glittering substance 5 ... Transparent resin layer

Claims (1)

[Claims] 1. A major axis 1 after a base layer is formed on the surface of a plate-shaped substrate.
0.1 to 5% by weight of flat bright substance of 0 to 200 μ
Form a convex pattern layer with a thickness of 30 to 200μ by screen printing with a mixed UV curable ink having a solid content of 90% or more and excellent transparency, and after curing, form a transparent resin layer on the entire surface. A method for producing a makie-style decorative board characterized by the above.