JPH07329268A - Decorative panel and production thereof - Google Patents

Abstract

PURPOSE:To enhance the productivity and design effect, in a decorative panel obtained by bonding fancy veneer to a base panel, by forming a surface protective layer excellent in strength and abrasion resistance and having sufficient thickness on the surface of the fancy veneer by a simple working process. CONSTITUTION:Fancy veneer 3 is bonded to the surface of a base panel 1 through an adhesive layer 2 and a colored film layer 4 is formed on the surface of the fancy veneer and a transparent synthetic resin sheet is further laminated and bonded to the upper surface of the film layer 4 through a transparent adhesive layer 5 to form a surface protective layer 6 to produce a decorative panel. The transparent synthetic resin sheet is bonded to the color coating surface of the fancy veneer through a transparent adhesive or an adhesive becoming transparent by curing. Surface recessed places 7, 7' expressing false vessel grooves are carved in the surface protective layer by embossing processing and can be filled with color coating to be colored.

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 for manufacturing the same.

[0002]

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

[0003]

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

Further, in the case of attempting to perform thick coating using a paint having a high viscosity, if the coating speed or the drying speed is high, uniform coating cannot be performed, and foaming occurs during drying. Although all of these problems are avoided by slowing down the speed, a decrease in productivity is inevitable.

Under the circumstances as described above, it has been attempted to give up the thick coating of the top coat and form a relatively thin surface protective layer. In this case, the strength of the surface protective layer becomes weak. Therefore, there are problems that the surface is easily scratched, the abrasion resistance is poor, and a deep makeup surface cannot be obtained.

[0006]

SUMMARY OF THE INVENTION The present invention aims 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 working process. , Aim to improve productivity.

The decorative board according to the present invention, which has been devised after earnest efforts to achieve the above object, has a decorative veneer adhered to the surface of the substrate via an adhesive and a surface of the decorative veneer. A colored coating is applied to the surface, and a transparent synthetic resin sheet is adhered to the upper surface of the surface through an adhesive that becomes transparent or transparent when cured to form a surface protective layer. It is characterized by being formed and formed.

The method for manufacturing a decorative board according to the present invention is
The decorative veneer is placed on the surface of the substrate via an adhesive and pressure-bonded, and then colored coating is applied to the surface of the decorative veneer. Then, the colored veneer surface of the decorative veneer is transparent. Alternatively, a transparent synthetic resin sheet is placed through an adhesive that becomes transparent when cured and pressure-bonded to form a surface protective layer made of the transparent synthetic resin sheet, and further, the surface of the surface protective layer is embossed. It is characterized in that a surface recess is formed by carving.

As the substrate, plywood, wood board, wood fiber board, wood shaving board, laminated wood, veneer laminated board, etc. are used alone or as a laminated board formed by arbitrarily laminating. In addition, the board is cut arbitrarily, and a skirting board, a rim, a molding, a door, a window on which the surface and the mouth end are optionally decorated by grooving or chamfering using a cutting machine such as a router or a cutter. It can also be used as a base material for face materials, sculpture materials, etc.

The adhesive is applied to the surface of the substrate by using a coating device such as a sprayer, a spreader or a bar coater. As this adhesive, a vinyl acetate resin-based, urea resin-based, melamine resin-based, phenol resin-based, isocyanate-based adhesive or the like is used alone or as a mixed adhesive. If necessary, talc, calcium carbonate, clay, inorganic powder such as titanium white, wheat flour, wood powder, plastic powder, colorant, insect repellent, fungicide, etc. may be added to and mixed with the adhesive. . In general, the adhesive has a solid content of 35 to 80% and is applied to the surface of the substrate at a coating amount of 50 to 300 g / m ² .

A decorative veneer is placed on the surface of the substrate coated with the adhesive. As the decorative veneer, a slice veneer, a rotary veneer, a half-land veneer, a sword veneer, or the like obtained by a cutting and cutting device such as a slicer, a rotary race, a half-land rotary race, a circular saw or a band saw is used. The decorative veneer generally has a thickness of 0.15 to 5 mm.

On the back surface of the decorative veneer, Japanese paper, Western paper, synthetic paper,
A backing material such as a non-woven fabric, a woven fabric, a gauze cloth, an impregnated paper, a synthetic resin sheet or the like may be stuck and used. By sticking the backing material, the decorative veneer itself can be reinforced, the decorative veneer can be prevented from cracking, and the adhesive can be prevented from seeping out to the surface of the decorative veneer. At the same time, the ease of handling can prevent cracks and improve productivity. The backing material may be applied to each leaf of the decorative veneer or may be continuously applied 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. Instead of applying the adhesive to the surface of the substrate as described above, or together therewith,
An adhesive may be applied to the back surface of the optionally lined decorative veneer. The decorative veneer may be attached to each substrate, or may be continuously attached to a plurality of substrates.

Thus, the substrate on which the decorative veneer is placed on each leaf or continuously through the adhesive 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 with a sticking device such as.

In this way, a colored coating is applied to the surface of the decorative veneer adhered to the surface of the substrate via the adhesive. Colored coating is generally performed on the surface of the decorative veneer using a sealer coating, sanding, etc., if necessary, and then coated with a colored coating using a coating device, and immediately sponge roll,
It is carried out by smoothing and rubbing the paint using a brush roll, a wool roll or the like. In addition, the excess paint is removed by using a reverse roll if necessary. By applying the colored coating, the color of the surface of the decorative veneer is unified, the wood grain, the conduit groove, etc. are remarkably exposed, and the design is improved.

After the colored coating is applied, an arbitrary pattern such as a wood grain pattern, a conduit groove pattern, an abstract pattern, a mosaic pattern can be printed on the colored coated surface. The print formation of the pattern is performed by using any printing method such as letterpress, intaglio, gravure, gravure offset, silk screen, and transfer.

On the colored coated surface of the decorative veneer attached to the surface of the substrate, an adhesive that is transparent or becomes transparent when cured is applied by using a coating device such as a sprayer, a spreader, a flow coater, a curtain coater or a bar coater. After application, a transparent synthetic resin sheet is placed.

The transparent or transparent adhesive used at this time is a vinyl acetate resin-based, urea resin-based, melamine resin-based, phenol resin-based, acrylic resin-based, urethane resin-based, isocyanate-based adhesive, etc. It is used alone or as a mixed adhesive which is arbitrarily mixed. A colorant may be added to this adhesive as needed to use it as a colored adhesive. The adhesive itself is transparent, or at least becomes transparent when cured, and therefore, in the obtained decorative board, the surface of the decorative veneer is not concealed and appears on the surface of the decorative board.

As the transparent synthetic resin sheet, polyethylene sheet, cellophane, acetate sheet, polyvinyl chloride sheet, polypropylene sheet, polystyrene sheet, polyester sheet, nylon sheet, saran sheet, acrylic sheet and the like are preferably used. Moreover, you may use what coat | covered these sheets with the heat adhesive resin. Generally, a transparent synthetic resin sheet is 0.005-1
Used as having a thickness of mm. The transparent synthetic resin sheet is placed on the colored coated surface of the decorative veneer for each decorative veneer or continuously for a plurality of decorative veneers.

As the transparent synthetic resin sheet, an arbitrarily colored colored transparent synthetic resin sheet can be used. Alternatively, a colorless or colored transparent synthetic resin sheet having an arbitrary pattern printed on the back surface may be used. With this, in combination with the original surface design of the decorative veneer and the colored coating applied to the surface, it is possible to emphasize the wood texture, express a new tree species, or express the depth. The designability as is further improved.

A substrate on which a transparent synthetic resin sheet is placed on a colored coated surface of a decorative veneer through an adhesive which is transparent or becomes transparent when cured is cold pressed, hot pressed, roll pressed, laminator, wrapping, The transparent synthetic resin sheet is adhered to the surface of the decorative veneer by pressing with a pressing device such as an edge pasting machine or a vacuum press to form a surface protective layer.

Next, the surface of the surface protective layer is embossed to form a surface recess. The embossing is performed using an embossing board, an embossing roll, a wire brush, a sander or the like. The depth of the surface recess is arbitrary, and the surface recess has a depth within the thickness range of the surface protective layer, or a surface recess having a depth reaching the decorative veneer through the surface protective layer,
Alternatively, a surface recess made of a combination of these is formed.

The surface recess of the surface protective layer is a pseudo representation of a recess such as a conduit groove, a hairline, and a wormhole of a natural wood material, and the wood texture is emphasized by the shadow hardening by the recess. It

Further, when the transparent synthetic resin sheet is attached to the colored coated surface of the decorative veneer, since an adhesive that is transparent or becomes transparent when cured is used, the surface of the decorative veneer has a recess such as a conduit groove. Since it is exposed from the surface of the decorative board through the transparent adhesive layer, the recesses of the decorative veneer itself and the surface recesses formed by pseudo-engraving on the surface of the transparent synthetic resin sheet are combined. Combined with the colored coating applied to the surface of the decorative veneer, a very characteristic design property can be exhibited.

The decorative board of the present invention is obtained as described above.

Furthermore, after the colored paint is applied to the whole surface of this decorative plate by using the above-mentioned coating apparatus, preferably immediately after that, a reverse roll coater is used to remove the surface recesses of the surface protective layer. By removing the colored paint applied to the surface portion and leaving the colored paint only in the surface recesses, the surface recesses of the surface protective layer can be colored and painted. As a result, the surface recess of the surface protective layer is more emphasized and the design is improved.

Alternatively, in the decorative board according to the present invention, a transparent synthetic resin sheet is provided on the colored coated surface of a decorative veneer whose surface is previously colored, with an adhesive which is transparent or transparent when cured. A surface protective layer made of the transparent synthetic resin sheet is formed by placing and pressing and adhering, and further, the surface of the surface protective layer is embossed to form a surface recess, and then, The decorative veneer can be manufactured by a method characterized in that the decorative veneer is placed on the surface of the substrate via an adhesive and pressure-bonded. Alternatively, a transparent synthetic resin sheet is attached to the decorative veneer surface via an adhesive that becomes transparent when transparent or cured to form a surface protective layer,
This may be pressure-bonded to the substrate surface via an adhesive, and then the surface of the surface protective layer may be embossed to engrave the surface recess.

In this method, after the surface protective layer is formed on the colored coated surface of the decorative veneer or after the decorative veneer is further laminated on the surface of the substrate to form a decorative plate, as described above. Only the inside of the surface recess of the surface protective layer can be colored and painted.

[0029]

The surface protective layer is formed by using a transparent synthetic resin sheet and adhering it onto the colored coated surface of the decorative veneer surface via an adhesive which becomes transparent when it is transparent or cured. The surface protective layer corresponds to the thickness of the transparent synthetic resin sheet used and is formed to have a uniform thickness.

Since a surface recess is formed on the surface of the surface protective layer by embossing, a recess such as a conduit groove on the surface of the wood veneer itself exposed through the surface protective layer and a decorative single layer. Combined with the colored coating applied to the board surface, the design is improved.

[0031]

EXAMPLE FIG. 1 schematically shows a decorative plate according to the present invention. A decorative veneer 3 is laminated on a surface of a substrate 1 with an adhesive layer 2 interposed therebetween, and the surface of the decorative veneer 3 is colored. A coating layer 4 is formed, and a transparent synthetic resin sheet is laminated and adhered on the upper surface of the coating layer 4 via an adhesive which becomes transparent or transparent when cured to form a surface protective layer 6. 5 is a transparent adhesive layer, and 8 is a recess such as a conduit groove on the surface of the decorative veneer 3.

On the surface side of the surface protection layer 6, surface recesses 7 and 7'which emulate a conduit groove or the like are formed by embossing. In this embodiment, the surface recess 7 is formed so as to penetrate the surface protective layer 6 to reach the decorative veneer 3, and the surface recess 7 ′ is formed within the thickness range of the surface protective layer. There is. Although not shown in this embodiment, these surface recesses 7 can be filled with a coloring paint to be colored.

[0033]

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 board by a simple working process. The decorative board obtained by the present invention has excellent strength, abrasion resistance and design, and is suitably used for building materials and furniture.

The thickness of the surface protective layer can be adjusted by changing the thickness of the transparent synthetic resin sheet used. In this case, the manufacturing equipment does not need any change.

Furthermore, the surface texture of the surface protective layer is engraved and formed to emulate a conduit groove or the like so that the wood texture is emphasized, and the decorative veneer surface is colored and painted. By doing so, it is possible to unify the color of the material and express the grain of wood, the conduit groove, etc. in an emphatic manner, and the synergistic effect of these can significantly improve the design.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Substrate 2 Adhesive Layer 3 Decorative Veneer 4 Colored Coating Layer 5 Transparent Adhesive Layer 6 Surface Protective Layer 7, 7'Surface Recess

Claims (10)

[Claims] 1. A decorative veneer is adhered to the surface of a substrate via an adhesive, a colored coating is applied to the surface of the decorative veneer, and the upper surface of the decorative veneer becomes transparent or transparent when cured. A decorative board characterized in that a transparent synthetic resin sheet is adhered via an agent, and a surface recess is formed in the surface protective layer by engraving. 2. The decorative board according to claim 1, wherein the transparent synthetic resin sheet is a colored transparent synthetic resin sheet which is arbitrarily colored. 3. The decorative board according to claim 1, wherein a pattern pattern is printed on the back surface of the transparent synthetic resin sheet. 4. The decorative board according to claim 1, wherein the adhesive that is transparent or becomes transparent when cured is a colored adhesive that is arbitrarily colored. 5. A pattern pattern is further formed by printing on the colored coating surface of the decorative veneer, and the surface protective layer is formed on the pattern pattern printing surface.
A decorative plate of any one of 4 to 4. 6. The decorative plate according to claim 1, wherein the surface recess of the surface protective layer is arbitrarily colored. 7. A decorative veneer is placed on the surface of a substrate via an adhesive agent and pressure-bonded to the surface of the substrate, then colored coating is applied to the surface of the decorative veneer, and then the colored coated surface of the decorative veneer. A transparent synthetic resin sheet is placed on top of the transparent synthetic resin sheet via an adhesive that becomes transparent when cured and pressure-bonded to form a surface protective layer made of the transparent synthetic resin sheet. A method for manufacturing a decorative board, which comprises embossing the surface of a layer to engrave a surface recess. 8. A transparent synthetic resin sheet is placed and pressure-bonded on the colored coated surface of a decorative veneer whose surface is colored, with an adhesive that is transparent or becomes transparent when cured. To form a surface protective layer made of the transparent synthetic resin sheet, and further, the surface of the surface protective layer is embossed to form a surface recess, and then the decorative veneer is bonded with an adhesive. A method for manufacturing a decorative board, which comprises placing on the surface of a substrate and pressing and adhering. 9. A pattern pattern is formed by printing on the colored coated surface of the decorative veneer, and the surface protective layer is formed on the pattern pattern printed surface. A method for manufacturing a decorative board. 10. After applying a color paint to the surface of the surface protective layer, the color paint applied to the surface portion excluding the surface recess is removed to leave the color paint in the surface recess. The method for manufacturing a decorative board according to any one of claims 7 to 9, which is characterized in that.