JPH07246604A - Decorative veneer and its production - Google Patents

Abstract

PURPOSE:To form a surface protective layer superior in strength and wear resistance and sufficient in thickness on a surface of a decorative veneer by a simple operation process, enhance a productivity, and express a feel of wood with emphasis to further enhance a design. CONSTITUTION:A decorative sheet is provided with a surface protective layer 3 formed by adhesively laminating a hot melt transparent synthetic resin sheet through a transparent adhesive layer 2 on a surface of a decorative veneer 1. The transparent synthetic resin sheet is bonded to the surface of the decorative veneer through an adhesive that is transparent or turned transparent in a cured state. On the surface of the surface protective layer, recesses 4, 4' for artificially expressing a trachea channel or the like are engraved by embossing. The recesses can be colored by a color coating material 5.

Description

Detailed Description of the Invention

[0001]

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

[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 veneer by a relatively simple work process. However, the aim is to improve productivity.

The decorative veneer according to the present invention, which has been devised after earnest efforts to achieve the above object, has a transparent synthetic resin sheet adhered to the surface of the decorative veneer via an adhesive which is transparent or transparent when cured. To form a surface protective layer,
Further, the surface protective layer is characterized in that a recess is formed in the surface thereof.

In the method for producing a decorative veneer according to the present invention, a transparent synthetic resin sheet is placed on the surface of the decorative veneer via an adhesive which becomes transparent or transparent when cured, and pressure-bonded. It is characterized in that after forming a surface protective layer made of a transparent synthetic resin sheet, the surface of the surface protective layer is embossed to form a recess.

As a material for the decorative veneer, slice veneers, rotary veneers, half-land veneers, sword veneers, etc. obtained by a cutting and cutting device such as a slicer, a rotary race, a half-land rotary race, a circular saw and a band saw. Is used. The thickness of decorative veneer is generally 0.15-5m
Used in the range of m.

On the back surface of the decorative veneer, Japanese paper, foreign 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.

An adhesive that becomes transparent or becomes transparent when cured is applied to the surface of the decorative veneer using an application device such as a sprayer, a spreader, a flow coater, a curtain coater, or a bar coater, and then a transparent synthetic resin sheet is placed thereon. To do. 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 or the like. 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. Since this adhesive itself is transparent or at least becomes transparent when cured, it appears in the obtained decorative veneer without hiding the surface of the decorative veneer.

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 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, the wood texture can be emphasized, new tree species can be expressed, or depth can be expressed. The designability 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 decorative veneer on which a transparent synthetic resin sheet is placed via an adhesive that becomes transparent or becomes transparent when cured is cold pressed, hot pressed, roll pressed,
The transparent synthetic resin sheet is adhered to the surface of the decorative veneer by pressing with a pressing device such as a laminator, wrapping, 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 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, hairlines, and wormholes of natural wood materials in a pseudo manner. Is emphasized, greatly improving the designability as a decorative veneer.

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 recesses such as the conduit grooves on the surface of the decorative veneer are transparent. Since it is exposed through the layer, the recesses that the veneer itself has and the recesses that are artificially formed on the surface of the surface protection layer are combined to exhibit a very characteristic design. can do.

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

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

The decorative veneer thus obtained is laminated and adhered to the substrate via an adhesive to obtain a decorative veneer.

As the substrate, plywood, wood board, wood fiber board, wood shaving board, laminated wood, single board laminated board or the like is used as a laminated board which is independent or laminated arbitrarily. 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 front surface of the substrate, the back surface of the decorative veneer, or both using an application device such as a sprayer, a spreader, or a bar coater. As the 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 in an arbitrary mixture. 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. . Generally, the adhesive has a solid content of 35 to 80% and a coating amount of 50 to 300 g /
It is applied in the range of m ² .

The decorative veneer may be adhered to each substrate, or may be adhered continuously 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 obtained by pressing the decorative veneer on the surface of the substrate using a sticking device such as the above.

[0026]

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, a recess is formed by engraving a conduit groove or the like so as to emphasize the texture of wood.

[0028]

EXAMPLE FIG. 1 schematically shows a decorative veneer according to the present invention. A transparent synthetic resin sheet is laminated and adhered to the surface of the decorative veneer 1 through an adhesive which is transparent or becomes transparent when cured. The surface protection layer 3 is formed with a substantially uniform layer thickness. 2 is a transparent adhesive layer.

On the surface side of the surface protective layer 3, recesses 4 and 4 ′ which emulate a conduit groove or the like are formed by embossing. In this embodiment, the recess 4 is formed within the thickness range of the surface protection layer 3, and the recess 4 ′ is formed so as to penetrate the surface protection layer and reach the decorative veneer 1. Further, in this embodiment, the colored paint 5 is filled and painted in these recesses.

[0030]

According to the present invention, a surface protective layer having a uniform thickness can be easily formed on the surface of a decorative veneer by a simple working process. The decorative veneer 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 recessed portion that simulates 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 veneer according to the present invention.

[Explanation of symbols]

 1 Decorative veneer 2 Transparent adhesive layer 3 Surface protective layer 4, 4'recess 5 Colored paint

Claims (8)

[Claims] 1. A surface protective layer is formed by adhering a transparent synthetic resin sheet to the surface of a decorative veneer via an adhesive that becomes transparent or becomes transparent when cured, and further, a recess is formed on the surface of the surface protective layer. A decorative veneer characterized by being engraved. 2. The decorative veneer 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.
Makeup veneer. 4. The decorative veneer 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 veneer according to claim 1, wherein the inside of the recess on the surface of the surface protective layer is arbitrarily colored. 6. The decorative veneer according to claim 1, wherein the recess is formed at a depth reaching the middle of the decorative veneer from the surface protective layer. 7. 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 becomes transparent or transparent when cured, and press-bonding the transparent synthetic resin sheet. After that, a method for producing a decorative veneer, characterized in that the surface of the surface protective layer is embossed to form a recess. 8. 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 veneer according to claim 7.