JPH01199672A - Manufacturing method of maki-e style decorative board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention can be used for housing machines, furniture doors, top boards, wall decorations, etc., and has rich decorative properties that satisfy the desire for luxury and individualization. The present invention relates to a method for manufacturing a maki-e style decorative board.

[Prior art and its problems] Traditionally, decorative boards used for furniture doors and top boards have mainly been printed plywood, polyester decorative boards, melamine decorative boards, and natural wood decorative boards.

To this day, these decorative boards have become more sophisticated and more individualized.

In the production of decorative laminates, in order to satisfy the desire for high quality and individualization, the process has become complicated, and the production of a wide variety of products and in small quantities has led to high costs. .

[Means for Solving the Problems] In view of the above-mentioned points, the inventors of the present invention have made extensive studies and have discovered a method of forming a decorative surface that closely resembles a high-quality maki-e using a relatively simple process. This invention has been achieved.

This will be explained below based on the drawings. 1 and 2 are partial cross-sectional views of decorative laminates obtained by the method of the present invention. FIG. 3 shows the state of dispersion 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 base material 1.

The formation method includes applying opaque colored paint, printing a pattern, pasting a colored sheet or a sheet with a pattern printed on it, or hot-pressing resin-gold decorative paper. be.

Next, a flat glittering material 4 with a major axis of 10 to 200 μm is applied at 0.00 μm.
A convex pattern layer 3 having a film thickness of 30 to 200 μm is formed by screen printing using a highly transparent ultraviolet curable ink containing 1 to 5% by weight, and then cured by irradiation with ultraviolet rays. Since the glittering substance is randomly scattered in the convex pattern layer, it reflects light rays in all directions, so it looks like the glittering substance is scattered on the base layer, and it looks like maki-e. It is. As the glittering substance, pearl pigment,
Fine aluminum foil or gold foil with a long diameter of 10 to 200μ
A piece with a size of As the ultraviolet curable ink, polyester-based, acrylic-based, urethane acrylate-based, and epoxy acrylate-based inks are used.

Thereafter, a transparent resin layer 5 is formed using a transparent resin over the entire surface of the plate-like base material 1 on which the convex pattern layer 3 is formed. The transparent <54 fat layer 5 may have a uniform thickness as shown in FIG. 1 to form a decorative board with an uneven surface; A decorative board with a smooth surface can be obtained by increasing the thickness of the transparent resin layer 5.Another method for forming the transparent resin layer 5 is to apply the transparent resin only to the recesses, harden it, and then polish the entire surface. Post-transparent (5) (greasy can be applied to the entire surface.

As the transparent 4jJ resin, an ultraviolet curing type similar to the ink forming the above-mentioned 5mm t=S is preferred because of its good workability.

In order to improve the scratch resistance of the transparent resin, a transparent filler such as aluminum oxide or glass beads may be mixed in the resin to the extent that the transparency is not excessively reduced.

If the long axis of the glittering substance is less than 10μ, the reflective surface is small, so there are few reflected rays, and the glitter is poor;
If it exceeds the above range, it will be difficult to pass through the gauze with the screen mark P↓, resulting in poor workability, poor cosmetic properties, and an increase in price.

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

When the thickness of the convex pattern layer is less than 30 μm, most of the flat glittering substances overlap horizontally in the convex pattern layer, as shown in Figure 3, so that only light rays in a certain direction are reflected. This does not show the effect of maki-e. The other 200u
If it exceeds this, the curing time becomes long, molding is difficult, and workability is poor.

In addition, if the solid content of the ink is less than 90%, the eyes will fade after the convex pattern is formed, and most of the glittering substances mixed in during this process will overlap horizontally in the convex pattern layer, so it will not work in a certain direction. It reflects only light rays and does not show the effect of maki-e.

[Example] The present invention will be explained in more detail with reference to Examples below.

Example 1 A black diallyl phthalate resin-impregnated paper was hot-pressed on the surface of a wood fiberboard to form a base layer. Next, pearl pigment (
Urethane acrylate (I) (fat-based ultraviolet curing ink (solid content 100
%) by screen printing to form a convex pattern layer with a 100 iz thick arabesque pattern, and then harden it by irradiating it with ultraviolet rays.

#100 screen gauze was used to form the convex pattern layer.

Next, a transparent polyester resin-based ultraviolet ray curing paint is applied using a reverse coater to the areas where the convex pattern layer is not formed, that is, the concave areas, and after curing by irradiating ultraviolet rays, the surface is polished to make the entire surface transparent. A decorative board that closely resembles maki-e was obtained by applying a urethane acrylate-based ultraviolet curing paint.

[Effects of the Invention] As described above, the decorative board obtained by the method of the present invention has the glittering substance added in the convex pattern layer scattered in random directions, so it cannot absorb light from all directions. Because it is reflective, it looks like glittering material has been sprinkled on top of the underlying base layer, giving it the appearance of maki-e.

Further, when the transparency of the transparent resin layer applied to the concave portions and the transparent resin layer applied to the convex portions are different, further depth can be obtained. Furthermore, in the method for producing a decorative board of the present invention, the decorative surface is formed by screen printing, which is easy to make, so even in the production of a wide variety of products in small quantities for individualization, the cost does not increase significantly.

[Brief explanation of the drawing]

1 and 2 are partial cross-sectional views of decorative laminates obtained by the method of the present invention. FIG. 3 is a partial cross-sectional view showing the state of dispersion of the glittering substance added to the thin convex pattern layer. 1... Plate-shaped base material 2... Foundation layer 3... Convex pattern layer 4... Glitter substance 5... Transparent resin layer

Claims (1)

[Claims] After forming the base layer on the surface of the plate-shaped base material, the major axis is 10 to 200μ
A convex pattern layer with a thickness of 30 to 200 μm is formed by screen printing using an ultraviolet curable ink with excellent transparency and a solid content of 90% or more, which contains 0.1 to 5% by weight of a flat glittering substance. A method for producing a maki-e style decorative board, which comprises forming a transparent resin layer over the entire surface after curing.