JPH0216229B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention absorbs a portion of a glossy top coat into a convex wood grain pattern formed with an ink that penetrates the top coat, creating a difference in gloss, texture, and unevenness that closely resembles natural wood. The present invention relates to a method of manufacturing a decorative board having the following.

(Prior Art) The following method has been proposed as a method for manufacturing this type of decorative board.

Special Publication No. 51-41364 Using several types of ink with different contents of granular solids, each pattern of a winter grain pattern, a summer grain pattern, and a conduit groove pattern were printed in order from the ink with a lower granular solids content. How to apply a topcoat afterwards.

JP-A-56-56270 A method of printing a wood grain pattern on a substrate coated with a base color, printing a spring material part or conduit part pattern thereon using ink containing a high extender pigment content, and then overcoating.

By the way, in this method, by changing the content of granular solids in the ink, the amount of suction of the top coat paint into the ink is varied, and the gloss of each pattern is changed. The topcoat is absorbed into the pattern created by the ink with a high pigment content to create a matte finish.

That is, in the method (2), the surface is changed by the difference in gloss between the matte finish caused by suction of the top coat into the pattern ink and the gloss (glossy) of the top coat in the pattern area where no suction is present.

However, although these methods express mere texture due to differences in gloss, they have not reached the point where they can express the bottom texture of natural wood. It also has the drawback of giving it a flat feel.

The present invention aims to solve the problems of such known techniques. That is, the method of the present invention is configured as described below to express the bottom texture of natural wood, as well as to express a three-dimensional decorative pattern with an uneven feel.

Embodiments of the method of the present invention illustrated in the drawings will be described below.

(Description of Examples) FIG. 1 shows a first example of the method of the present invention.

First, base treatment 2 such as sealer treatment, sealing treatment, and undercoating is applied to the surface of the substrate 1 as necessary.
administer.

As the substrate 1, an organic or inorganic board, a mixed board or a composite board of organic and inorganic materials, such as plywood, fiberboard, gypsum board or cement board, is used. In addition, a sheet-like material such as paper, cloth, resin sheet, metal foil, etc. is attached to the surface of a plate-like material (the sheet-like material may have an arbitrary decoration applied to the surface).
But that's fine.

Next, using regular ink on the surface of the base-treated substrate 1, a wood grain pattern 3 such as a spring wood grain pattern, an autumn wood grain pattern, a conduit groove pattern, etc. is printed using conventional gravure printing, offset printing, or gravure offset printing. It is printed and formed by, etc.

Normal inks include gravure ink, offset ink, gravure offset ink, etc., and if necessary, ink having pearlescent or metallic luster in which pearl essence, metal powder, or pigment is added is used.

Next, on the surface of the substrate 1 on which the wood grain pattern 3 has been formed, a convex shape is formed in synchronization with the wood grain pattern of the spring wood part or the fall wood part of the wood grain pattern 3 using ink that penetrates the top coat 5 to be applied later. The raised wood grain pattern 4 is printed and formed by ordinary gravure printing, screen printing, etc.

Ink that penetrates the top coat includes ink with a high content of extender pigments, ink with high viscosity that is mechanically foamed with air bubbles inside it by stirring or blowing air, etc. say.

In the raised woodgrain pattern area created by ink with a high content of extender pigments, as the ink layer dries, voids are created on the surface and inside of the ink layer forming the pattern due to the volatilization of volatile matter, resulting in a very porous layer.

Furthermore, when the raised pattern 4 is formed using mechanically foamed ink, not only an uneven pattern is created on the surface as the bubbles are formed, but also many of the bubbles near the surface are destroyed or the destroyed bubbles are They communicate with each other, forming recesses with an uneven pattern on the surface or voids due to the destruction of air bubbles. In this way, the surface of the raised wood grain pattern 4 becomes a porous layer.

After printing and forming the convex raised wood grain pattern 4, a glossy transparent or colored transparent top coat 5 is applied to the entire surface thereof.

When the top coat 5 is applied to the raised wood grain pattern 4, the ink layer forming the pattern is formed to be very porous as described above, so the top coat penetrates into the voids in the ink layer and becomes matte.

In the wood grain pattern portions 3 other than the raised pattern portions 4, the top coat 5 is not penetrated and is left and formed on the surface as the top coat 5, giving a glossy pattern.

In this way, a concave decorative board having a matte convex raised wood grain pattern 4 that was in sync with the wood grain pattern of the spring wood and a glossy wood grain pattern 3 of the autumn wood was obtained.

As mentioned above, the wood grain pattern on the surface of decorative boards is formed by glossy wood grains and dull convex wood grains,
The difference in luster, combined with the surrounding shading due to the convex shape, makes it look concave, giving it an uneven feel, and the luster of the glossy wood grain gives it a textured feel, creating a natural wood texture. Ru.

Further, as the ink for forming the convex raised pattern 4, a foaming ink that foams upon heating or an ink containing a foaming agent may be used.
In this case, wood grain pattern 4 applied on wood grain pattern 3
is initially applied in a flat shape, and then bulges by heating to form a raised pattern 4.

When the raised pattern 4 is formed using the above-mentioned ink, the surface thereof becomes porous, as in the case where mechanically foamed ink is used. The top coat 5 will penetrate into this porous surface.

Furthermore, as the ink for forming the raised pattern 4, a foaming ink that foams by reacting with the top coat 5, or an ink to which a foaming agent is added may be used. In this case, when the ink is first applied in a raised pattern 4 on the wood grain pattern 3 and the top coat 5 is applied, the ink in the raised pattern 4 foams and rises. The raised pattern 4 becomes porous at the same time as foaming, and the top coat 5 permeates into the raised raised pattern 4. That is, in this case, the top coat 5 reacts with the ink of the raised pattern 4 and penetrates into the raised pattern 4.

(Operations and Effects of the Present Invention) The function of making the surface of the raised pattern 4 porous using the above ink is as follows.

That is, as shown in FIG. 2, when a top coat 5 that reacts with the raised wood grain pattern 4 is applied, the ink in the raised wood grain pattern 4 foams and the interface between the two forms an uneven surface 6. At this stage of foaming, the top coat 5 is taken along the uneven surface and penetrates into the uneven surface. Thus, the raised wood grain pattern 4 has a matte appearance.

The effects of the present invention are summarized as follows.

Since the raised wood grain pattern 4 uses ink that forms a porous layer so as to penetrate the top coating 5, the raised wood grain pattern 4 has a convex shape and a matte appearance, whereas other wood grains Since the pattern 3 part is concave and exhibits a glossy pattern, the two form a contrast and can skillfully express the unevenness and texture of the bottom.

[Brief explanation of drawings]

FIG. 1: A cross-sectional view of a decorative board obtained by the method of the present invention, FIG. 2: An explanatory diagram of a porous layer on the surface of the raised wood grain pattern 4. 1: Substrate, 2: Base treatment, 3: Wood grain pattern, 4:
Raised wood grain pattern, 5: Top coat paint.

Claims (1)

[Claims] 1. A wood grain pattern 3 is printed using ordinary ink on the surface of a substrate 1 that has been subjected to a base treatment, and then either the autumn wood part pattern or the spring wood part pattern of the wood grain pattern 3 is printed. A convex raised wood grain pattern 4 is printed using an ink that is synchronized with and permeates the top coat 5 applied later, and then a glossy transparent or colored transparent top coat 5 is applied to the entire surface, A decorative board characterized in that the paint 5 penetrates into the ink of the raised wood grain pattern 4, so that the raised wood grain pattern 4 is matte and the other parts of the wood grain pattern 3 are glossy. Production method. 2. The method for producing a decorative board according to claim 1, in which an ink with a high content of extender pigment is used as the ink that penetrates the top coat 5 that forms the convex raised wood grain pattern. 3. The method of manufacturing a decorative board according to claim 1, in which a mechanically foamed ink is used as the ink that penetrates the top coat paint forming the convex raised wood grain pattern 4. 4. The method for manufacturing a decorative board according to claim 1, wherein the ink that forms the convex raised wood grain pattern 4 is an ink that foams when heated. 5. The method of manufacturing a decorative board according to claim 1, wherein the ink forming the raised wood grain pattern 4 reacts with the top coat 5 and foams.