JP2853006B2 - Decorative plate and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board used as a building material or a board for furniture in a house and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a decorative veneer is adhered to the surface of a substrate via an adhesive, and then a colored paint is applied to the surface of the decorative veneer to apply a colored coating. It is widely practiced to apply a coating to form a surface protective layer to form a decorative plate.

[0003]

In the above-mentioned prior art, in order to give a sufficient function to the surface protective layer, it is necessary to repeatedly apply a top coat and to apply it thickly, which complicates the working process.

[0004] When thick coating is performed using a high-viscosity paint, if the coating speed or drying speed is high, uniform coating cannot be performed and foaming occurs during drying. These problems are avoided by reducing the speed, but on the other hand, a decrease in productivity is inevitable.

In view of the above circumstances, it has been practiced to abandon the thick coating of the top coat to form a relatively thin surface protective layer. In this case, however, the strength of the surface protective layer is reduced. Therefore, there are problems that the surface is easily scratched and has poor abrasion resistance, and a deep decorative surface cannot be obtained.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and more specifically, to stably supply a high-quality decorative board by a relatively simple work process. , To improve productivity.

In order to achieve the above object, a decorative veneer according to the present invention, which has been devised eagerly, has a veneer veneer adhered to the surface of a substrate via an adhesive and the veneer veneer. A transparent synthetic resin sheet is adhered to the surface of the transparent synthetic resin sheet via an adhesive which becomes transparent when cured or hardened to form a surface protective layer. Further, the surface of the surface protective layer is removed from the surface of the surface protective layer.
Depth that stops at or halfway through the decorative veneer
Characterized in that a plurality of recesses are formed .

[0008]

As the substrate, a plywood, a wood board, a wood fiber board, a wood chip board, a laminated wood, a veneer laminate board or the like is used alone or as a laminate board obtained by optionally stacking. In addition, the substrate is arbitrarily cut, and a skirting board, a surrounding edge, a molding, a door, a window, which is subjected to optional decoration such as grooving and chamfering using a cutting machine such as a router or a cutter on the surface or the edge of the edge, is provided. It can also be used as a base material for surface materials, construction materials, and the like used for such purposes.

[0010] An adhesive is applied to the surface of the substrate using an application device such as a sprayer, a spreader, or a bar coater. As the adhesive, an adhesive of a vinyl acetate resin type, a urea resin type, a melamine resin type, a phenol resin type, an isocyanate type, or the like is used alone or as a mixed adhesive obtained by arbitrary mixing. The adhesive can be used by adding and mixing inorganic powder such as talc, charcoal, clay, titanium white, etc., flour, wood flour, plastic powder, coloring agent, insect repellent, fungicide, etc., if necessary. . Generally, the adhesive has a solid content of 35 to 80% and is applied to the substrate surface in an application amount of 50 to 300 g / m ² .

A decorative veneer is placed on the surface of the substrate to which the adhesive has been applied. As the decorative veneer, a slice veneer, a rotary veneer, a half land veneer, a sword veneer, etc. obtained by a cutting machine such as a slicer, a rotary lace, a half land rotary lace, a circular saw, a band saw and the like are used. The thickness of the decorative veneer is generally used in the range of 0.15 to 5 mm.

On the back of the decorative veneer, Japanese paper, Western paper, synthetic paper,
A backing material such as a nonwoven fabric, a woven fabric, a cold gauze, an impregnated paper, or a synthetic resin sheet may be attached and used. By attaching the backing material, the veneer veneer itself is reinforced, the veneer veneer is prevented from drying, the adhesive is prevented from seeping out of the veneer surface, and the occurrence of defective products is prevented. At the same time, handling becomes easy, so that cracks can be prevented and productivity can be improved. The backing material may be adhered to each decorative veneer leaf or may be continuously adhered to a plurality of decorative veneers.

According to the present invention, a decorative veneer is adhered to the surface of a substrate via an adhesive, and instead of or in addition to applying the adhesive to the surface of the substrate as described above,
An adhesive may be applied to the back of the veneer veneer optionally backed. The decorative veneer may be attached to each substrate or may be attached continuously over a plurality of substrates.

The substrate on which the decorative veneer is placed for each leaf or continuously through the adhesive as described above is cold-pressed, hot-pressed, roll-pressed, laminator, wrapping, edge pasting machine, vacuum press The decorative veneer is adhered to the substrate surface by pressing using a sticking device such as the above.

On the surface of the decorative veneer attached to the substrate surface,
Spray adhesive that is transparent or transparent when cured
After applying using a coating device such as a spreader, a flow coater, a curtain coater, and a bar coater, a transparent synthetic resin sheet having a concave portion on the surface is placed. The transparent synthetic resin sheet is placed on the surface of the veneer veneer for each veneer veneer or continuously over a plurality of veneer veneers.

The adhesive used at this time, which is transparent or hardens when cured, is an adhesive of vinyl acetate resin type, urea resin type, melamine resin type, phenol resin type, acrylic resin type, urethane resin type, isocyanate type or the like. And used alone or as an arbitrary mixture of mixed adhesives. If necessary, a coloring agent may be added to this adhesive to be used as a coloring adhesive. If necessary, inorganic powders such as talc, charcoal, clay and titanium white, wheat flour, wood flour, plastic powder, insect repellents, fungicides and the like can be added and mixed. Since the adhesive itself is transparent or at least becomes transparent when cured, it appears on the surface of the decorative plate without hiding the surface of the decorative veneer in the obtained decorative plate.

As the transparent synthetic resin sheet, polyethylene sheet, cellophane, acetate sheet, polyvinyl chloride sheet, polypropylene sheet, polystyrene sheet, polyester sheet, nylon sheet, Saran sheet and the like are preferably used. Generally, a transparent synthetic resin sheet is used as a sheet having a thickness of 0.005 to 1 mm.

By using an arbitrary colored transparent synthetic resin sheet as the transparent synthetic resin sheet, it is possible to emphasize the feeling of wood, express a new tree species or express depth, and to design the decorative sheet as a decorative board. Properties can be further improved. Similarly, for the purpose of improving design, a colorless or colored transparent synthetic resin sheet having an arbitrary pattern printed on the back surface may be used.

A substrate on which a transparent synthetic resin sheet is mounted via an adhesive which becomes transparent or hardened when cured on the surface of a decorative veneer is subjected to cold press, hot press, roll press, laminator, wrapping, edge pasting machine, By pressing using a pressing device such as a vacuum press, the transparent synthetic resin sheet is adhered to the surface of the decorative veneer to form a surface protective layer.

Next, the surface of the surface protection layer is embossed to form a recess. The embossing is performed using an embossing machine, an embossing roll, a wire brush, a sander, or the like. The depth of the recess is optional, and may be smaller than the depth of the surface protective layer, the depth of the surface penetrating the surface protective layer to the decorative veneer, or a combination thereof. A recess is formed.

The recesses engraved in the surface protective layer represent the recesses of the natural woody material, such as conduit grooves, hair lines, wormholes, etc., and the shading effect of the recesses gives the woody texture. Is emphasized, and the design as a decorative board can be greatly improved.

Further, when the transparent synthetic resin sheet is adhered to the surface of the decorative veneer, an adhesive which is transparent or hardened and becomes transparent is used. Since the decorative veneer is exposed from the surface of the decorative plate through the layer, the concave portion of the decorative veneer itself and the concave portion formed on the surface of the surface protective layer are combined to form an extremely distinctive feature. Design can be exhibited.

As described above, the decorative plate of the present invention is obtained.

Further, after applying a colored paint to the entire surface of the decorative plate using the above-described coating apparatus, preferably immediately afterwards, using a reverse roll coater, the surface excluding the recesses of the surface protective layer is removed. By removing the colored paint applied to the portion and leaving the colored paint only in the recess, the inside of the recess of the surface protective layer can be colored. As a result, the recesses of the surface protective layer are more emphasized and the design is improved.

Alternatively, the decorative board according to the present invention is obtained by placing a transparent synthetic resin sheet on a surface of a decorative veneer via an adhesive which becomes transparent when cured or hardened, and pressing and bonding the transparent synthetic resin sheet. After forming a surface protection layer comprising a surface protection layer, embossing is performed on the surface of the surface protection layer to form a recess, and then the decorative veneer is placed on the surface of the substrate via an adhesive and pressed. It can be manufactured by a method characterized by bonding.

In this method, after forming a surface protective layer on the surface of the decorative veneer and forming a recess in the surface protective layer, or after laminating the decorative veneer on the substrate surface to form a decorative plate, As described above, only the inside of the recess of the surface protective layer can be colored.

[0027]

The transparent protective resin sheet is adhered to the surface of the decorative veneer via an adhesive which becomes transparent or cured when it is cured, thereby forming a surface protective layer. The surface protective layer corresponds to the thickness of the transparent synthetic resin sheet used,
Moreover, it is formed to have a uniform thickness.

[0028] On the surface of the surface protective layer, a recess is formed in a pseudo manner to represent a conduit groove or the like, so that the wooden texture is emphasized.

[0029]

FIG. 1 schematically shows a decorative veneer according to the present invention, in which a decorative veneer 3 is laminated on the surface of a substrate 1 with an adhesive layer 2 interposed therebetween. The transparent synthetic resin sheet is laminated and adhered via an adhesive which becomes transparent or hardens when cured, thereby forming the surface protective layer 4. 5
Is a transparent adhesive layer.

On the surface side of the surface protection layer 4, recesses 6 and 6 'for emulating a channel groove or the like are formed by embossing. In this embodiment, the recess 6 is formed within the thickness range of the surface protection layer 4, and the recess 6 ′ is formed so as to penetrate the surface protection layer and reach the decorative veneer 3. Further, in this embodiment, the colored paint 7 is filled and painted in these recesses.

[0031]

According to the present invention, a surface protective layer having a uniform thickness can be easily formed on the surface of a decorative veneer in a decorative panel by a simple operation process. The decorative board obtained by the present invention has excellent strength and abrasion resistance, and is suitably used for building materials and furniture.

Further, the thickness of the surface protective layer can be adjusted by changing the thickness of the transparent synthetic resin sheet used. In this case, no change is required for the manufacturing equipment.

Further, a recess is formed in the surface of the surface protective layer to simulate a conduit groove or the like, so that the wooden texture can be emphasized.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing a decorative board according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Adhesive layer 3 Decorative veneer 4 Transparent synthetic resin sheet (surface protective layer) 5 Transparent adhesive layer 6, 6 'recess 7 Colored paint

Claims (1)

(57) [Claims] 1. A decorative veneer is adhered to the surface of a substrate via an adhesive, and a transparent synthetic resin sheet is adhered to the surface of the veneer via an adhesive which becomes transparent when cured or hardened. To form a surface protective layer.
The depth of stopping in the surface protective layer from the surface of the
A decorative plate comprising a plurality of recesses having a depth reaching the middle of the plate.