JPH07329173A - Decorative board and its manufacture - Google Patents

Abstract

PURPOSE:To form a surface protecting layer with high strength and abrasion resistance, and also of adequate thickness on the surface of a veneer by a simple working process in a decorative board consisting of a decorative veneer adhered to a base, and enhance its productivity and design. CONSTITUTION:This decorative board consists of a decorative veneer 3 adhered to the surface of a base 1 through an adhesive layer 2, a colored coat layer 4 formed on the surface of the decorative veneer, and a surface protecting layer 5 of self-fusible thermally laminated transparent synthetic resin sheet formed on the surface of the colored coat layer 4. In addition, surface recessed parts 7, 7' which simulate conduit grooves on the surface of the decorative board are engraved by embossing on the surface of the surface protecting layer. Although not illustrated, it is possible to fill the surface recessed part with a colorant paint for coloration.

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 surface protective layer is formed on the upper surface of which a heat-meltable transparent synthetic resin sheet is self-welded, and a surface recess is formed on the surface of the surface protective layer. It is characterized by

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 colored coating is applied to the surface of the decorative veneer, and then heat-melted on the colored coated surface of the decorative veneer. Transparent synthetic resin sheet is placed and heated and pressed to melt the transparent synthetic resin sheet, and self-welded on the colored coated surface to form a surface protective layer, and further, the surface protective layer. It is characterized in that a surface recess is formed by engraving the surface of the.

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.

The decorative veneer may be colored on the surface in advance as described above and then attached to the surface of the substrate via an adhesive.

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.

A heat-meltable transparent synthetic resin sheet is placed on the colored coated surface of the decorative veneer attached to the surface of the substrate.
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 used as having a thickness of 0.005 to 1 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.

The substrate on which the transparent synthetic resin sheet is placed on the colored coated surface of the decorative veneer is heat-pressed by using a heat-pressing device such as a hot press or a heater roll press. The transparent synthetic resin sheet is melted and self-welded to the surface of the decorative veneer to form a surface protective layer. The temperature at which the transparent synthetic resin sheet is self-welded is 140 to 200 ° C. for the polyester sheet, and the cellophane 11 is used.
0-200 ° C, polyvinyl chloride sheet 100-170
C., polystyrene sheet 140 to 180.degree. C., polyester sheet 150 to 220.degree.

At the time of heat welding, the transparent synthetic resin sheet is self-welded by press-fitting it into a recess on the surface of the decorative veneer.
As a result, the so-called anchor effect works, and the surface protective layer is firmly layered on the surface of the decorative veneer in combination with the welding force of the heat-welding transparent synthetic resin sheet itself.

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 recess has a depth within the thickness range of the surface protective layer, or a recess that penetrates the surface protective layer and the colored coating layer and reaches the decorative veneer. , Or a combination thereof is formed.

The surface recesses formed by engraving on the surface protective layer are
This is a pseudo representation of recesses such as conduit grooves, hairlines, and wormholes of natural wood materials. The wood effect is emphasized by the shading effect of the surface recesses, and the colored coating is applied to the surface of the decorative veneer. Together with this, the designability as a decorative board can be greatly improved.

Further, since the recesses such as the conduit grooves on the surface of the decorative veneer are exposed from the surface of the decorative plate through the transparent surface protective layer, the recesses and the surface protection of the decorative veneer itself. By combining with a surface recess formed artificially on the surface of the layer, it is possible to exhibit a very characteristic design property.

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 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. As a result, the surface recess of the surface protective layer is more emphasized and the designability is further improved.

Alternatively, in the decorative board according to the present invention, a heat-melting transparent synthetic resin sheet is placed on the colored coated surface of a decorative veneer whose surface is previously colored and heated and pressed. By melting the transparent synthetic resin sheet, to form a surface protection layer by self-welding on the colored coating surface, further, by embossing the surface of the surface protection layer to form a surface recess, Then, the decorative veneer can be manufactured by a method characterized by placing the decorative veneer on the surface of the substrate via an adhesive and press-bonding. Alternatively, a transparent synthetic resin sheet is attached to the surface of the decorative veneer with an adhesive that becomes transparent when it is transparent or cured to form a surface protective layer, which is then pressure-bonded to the substrate surface with the adhesive. Alternatively, the surface of the surface protective layer may be embossed to form a surface recess.

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

[0029]

The surface protective layer is formed by self-welding a heat-melting transparent synthetic resin sheet onto the colored coated surface of the decorative veneer surface. The surface protective layer corresponds to the thickness of the transparent synthetic resin sheet used and is formed to have a uniform thickness. The color coating applied to the surface of the decorative veneer improves the design.

Since the transparent synthetic resin sheet is press-fitted into a recess such as a conduit groove on the surface of the decorative veneer during self-welding, the surface protective layer is firmly adhered to the surface of the decorative veneer by the anchor effect. On the surface of the surface protective layer, surface recesses that imitate the conduit grooves on the surface of the decorative veneer are engraved and formed, and the wood texture is emphasized, and the colored coating applied to the surface of the decorative veneer. Together with this, 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 surface protective layer 5 formed by laminating a heat-melting transparent synthetic resin sheet by self-welding is further formed on the upper surface thereof.

On the surface side of the surface protective layer 5, 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 5 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, 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.

Further, the surface of the surface protective layer is provided with a surface recess that simulates a conduit groove or the like, and the texture of wood is emphasized. Furthermore, by applying colored coating to the surface of the decorative veneer, it is possible to unify the color of the material and to express wood grain, conduit grooves, etc. in an emphasized manner, and the synergistic effect of these will 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]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Adhesive layer 3 Decorative veneer 4 Colored coating layer 5 Surface protective layer 6 Recesses such as conduit grooves 7, 7'Surface recesses

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B32B 33/00 7148-4F // B29K 105: 32 B29L 31:10

Claims (9)

[Claims] 1. A decorative veneer is attached to the surface of a substrate via an adhesive, a colored coating is applied to the surface of the veneer, and a heat-melting transparent synthetic resin sheet is further provided on the upper surface of the decorative veneer. Is a self-welded surface protective layer, and a surface recess is formed on the surface of 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. A pattern pattern is further printed and formed on the colored coated surface of the decorative veneer, and the surface protective layer is formed on the pattern pattern printed surface.
A decorative plate of any one of 3 to 3. 5. The decorative plate according to claim 1, wherein the inside of the surface recess of the surface protective layer is arbitrarily colored. 6. 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. The transparent synthetic resin sheet having a heat-melting property is placed on and melted by heating and pressing to form a surface protective layer by self-welding on the colored coated surface, A method for manufacturing a decorative plate, characterized in that the surface of the surface protective layer is embossed to form surface recesses. 7. The transparent synthetic resin sheet is melted by placing a heat-meltable transparent synthetic resin sheet on the colored coated surface of a decorative veneer whose surface is colored and applying heat and pressure. Then, the surface protection layer is formed by self-welding on the colored coated surface, and the surface of the surface protection layer is embossed to form a surface recess, and then the decorative veneer is bonded. A method for manufacturing a decorative plate, which comprises placing it on the surface of a substrate through an agent and performing pressure bonding. 8. 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. 9. 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 6 to 8.