JPH07246691A - Decorative panel and production thereof - Google Patents

Abstract

PURPOSE:To enhance productivity and to strongly express a wooden feeling to further enhance design effect by forming a surface protecting layer excellent in strength and abrasion resistance and having sufficient thickness on the surface of decorative veneer by a simple work process. CONSTITUTION:In a decorative panel wherein decorative veneer 3 is bonded to the surface of a substrate 1 through an adhesive layer 2 and a surface protecting layer 2 is formed on the decorative veneer 3 by laminating and bonding a transparent synthetic resin sheet to the surface of the decorative veneer 3 through a transparent adhesive layer 5, the transparent synthetic resin sheet is bonded to the surface of the decorative veneer through an adhesive transparent or becoming transparent upon curing. Recessed parts 6, 6' falsely expressing vessel grooves are formed to the surface of the surface protecting layer by embossing processing and can be colored using color paint 7.

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. The transparent synthetic resin sheet is adhered via an adhesive which becomes transparent or becomes transparent when cured to form a surface protective layer, and further, a recess is formed on the surface of the surface protective layer.

The method for manufacturing a decorative board according to the present invention is
A decorative veneer is placed on the surface of the substrate via an adhesive and pressure-bonded, and then a transparent synthetic resin sheet is placed on the surface of the decorative veneer via an adhesive that becomes transparent or transparent when cured. Then, the surface protective layer made of the transparent synthetic resin sheet is formed by press-bonding, and then the surface of the surface protective layer is embossed to form a recess.

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, etc. adhesive 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.

In this way, 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.

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

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. In addition, if necessary, inorganic powders such as talc, calcium carbonate, clay, and titanium white, wheat flour, wood powder, plastic powder, insect repellents, fungicides, etc. can be added and mixed. 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, etc. are preferably used. Generally, a transparent synthetic resin sheet is used as having a thickness of 0.005 to 1 mm.

By using a colored transparent synthetic resin sheet that is arbitrarily colored as the transparent synthetic resin sheet, it is possible to emphasize the wood texture, express a new tree species, or express the depth. The property can be further improved. Further, similarly, for the purpose of improving the design, a colorless or colored transparent synthetic resin sheet having an arbitrary pattern printed on the back surface may be used.

A substrate having a transparent synthetic resin sheet placed on the surface of a decorative veneer through an adhesive that becomes transparent or becomes transparent when cured is cold-pressed, hot-pressed, roll-pressed, laminator-lapping, edging machine, By pressing with 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.

Then, the surface of the surface protective layer is embossed to form a recess. The embossing is performed using an embossing board, an embossing roll, a wire brush, a sander or the like. The depth of the recess is arbitrary, and the depth of the recess is within the thickness range of the surface protection layer, or the depth of the recess reaching the decorative veneer through the surface protection layer, or a combination thereof. A recess is formed.

The recesses engraved in the surface protective layer represent the recesses such as conduit grooves, hair lines, and wormholes of natural wood material in a pseudo manner. Is emphasized, and the designability as a decorative board can be greatly improved.

Further, when the transparent synthetic resin sheet is attached to the surface of the decorative veneer, since an adhesive that is transparent or becomes transparent when cured is used, the recess such as the conduit groove on the surface of the decorative veneer is transparent. Since it is exposed from the surface of the decorative veneer through the layer, the recesses of the decorative veneer itself and the recesses formed on the surface of the surface protective layer are combined to form a very characteristic feature. It is possible to exhibit excellent design characteristics.

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

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

Alternatively, in the decorative board according to the present invention, the transparent synthetic resin sheet is placed on the surface of the decorative veneer with an adhesive that is transparent or becomes transparent when cured, and is pressure-bonded to the transparent synthetic resin sheet. After forming a surface protective layer consisting of the above, the surface of the surface protective layer is embossed 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 surface of the substrate to form a decorative plate, As described above, only the inside of the recess of the surface protective layer can be colored and painted.

[0027]

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

On the surface of the surface protective layer, recesses are formed by engraving the conduit groove and the like so as to emphasize the texture of wood.

[0029]

EXAMPLE FIG. 1 schematically shows a decorative board according to the present invention, in which a decorative veneer 3 is laminated on a surface of a substrate 1 with an adhesive layer 2 interposed therebetween, and further on the surface of the decorative veneer 3. , A transparent synthetic resin sheet having a recess on the surface is laminated and adhered via an adhesive which becomes transparent or becomes transparent when cured, and thus the surface protective layer 4
Is formed. 5 is a transparent adhesive layer.

On the surface side of the surface protective layer 4, recesses 6 and 6'representing a conduit groove or the like in a pseudo manner are formed by embossing. In this embodiment, the recess 6 is formed within the thickness range of the surface protective layer 4, and the recess 6 ′ is formed so as to penetrate the surface protective 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 board by a simple working process. The decorative board obtained by the present invention has excellent strength and abrasion resistance, 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.

Further, the surface protective layer surface is provided with a recess for simulating a conduit groove or the like, so that the texture of wood can be emphasized.

[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 Transparent Synthetic Resin Sheet (Surface Protection Layer) 5 Transparent Adhesive Layer 6, 6'Recess 7 Colored Paint

Claims (9)

[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 decorative veneer via an adhesive which is transparent or transparent when cured. A decorative plate having a surface protective layer formed thereon and further having a recess formed in the surface of the surface protective layer. 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 pattern pattern is printed on the back surface of the transparent synthetic resin sheet.
Veneer. 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. The decorative board according to claim 1, wherein the inside of the recess on the surface of the surface protective layer is arbitrarily colored. 6. The decorative plate according to claim 1, wherein the recess is formed to a depth reaching the middle of the decorative veneer from the surface protective layer. 7. A synthetic veneer is placed on the surface of a substrate via an adhesive and pressure-bonded to the surface of the substrate, and then transparent or transparent is synthesized on the surface of the decorative veneer via an adhesive that becomes transparent when cured. A surface protective layer made of the transparent synthetic resin sheet is formed by placing a resin sheet and press-bonding the resin sheet, and then the surface of the surface protective layer is embossed to form a recess. A method for manufacturing a decorative board. 8. A surface protective layer made of the transparent synthetic resin sheet is formed by placing a transparent synthetic resin sheet on the surface of a decorative veneer with an adhesive that is transparent or transparent when cured and pressure-bonding the transparent synthetic resin sheet. After that, the surface of the surface protective layer is embossed to form a recess, and then the decorative veneer is placed on the surface of the substrate via an adhesive and pressure-bonded. A method for manufacturing a decorative board. 9. The colored coating material is applied to the surface of the surface protective layer, and then the colored coating material applied to the surface portion excluding the recess is removed to leave the colored coating material in the recess. The method for manufacturing a decorative board according to claim 7 or 8.