JPH0825306A - Decorative veneer and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide decorative veneer excellent in manageability, productivity and designedness by a method wherein surface protective layer, which is excellent in strength and wear resistance and has enough thickness, is formed on the surface of the decorative veneer through simple working process. CONSTITUTION:On the surface of decorative veneer 1, surface protective layer 3 is formed by bonding transparent synthetic resin sheet through transparent adhesive layer 2, which is transparent or becomes transparent after hardening. On the rear surface of the decorative veneer, reinforcing layer 5 is formed by bonding backing material through adhesive layer 4.

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, various types of decorative veneer have been provided. In addition, a backing material such as Japanese paper or non-woven fabric is attached to the back surface to improve strength and handleability,
It is also available that has a sealer coating on the surface and further sanding the surface to improve wear resistance.

Such a decorative veneer is adhered to the surface of the substrate via an adhesive, and if necessary, a colored paint is applied to the surface of the decorative veneer to give a colored coating, and then a top coat is applied. It is widely practiced to apply a top coat to form a surface protective layer and make a decorative plate.

[0004]

In the above-mentioned prior art, in order to give a sufficient function to the surface protective layer formed on the surface of the decorative veneer, it is necessary to repeatedly coat the top coating material several times for thick coating. , The work process becomes complicated.

Further, in the case of attempting a 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 the drying, so that the coating speed and the drying speed are actually reduced. 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, but 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.

[0007] Attempts have also been made to apply a final topcoat paint to a decorative veneer in advance to form a finishing layer or a surface protective layer. However, with the application of the topcoat paint, the veneer itself expands and shrinks due to drying. However, warping and twisting in the direction perpendicular to the fiber direction of the decorative veneer occur, making it difficult to attach the decorative veneer to the surface of the substrate, so that it cannot be put to practical use.

[0008]

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned problems of the prior art. More specifically, a high-quality decorative veneer having a surface protective layer having a sufficient function in advance is provided. The purpose is to provide a stable supply through a relatively simple work process and 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 through an adhesive which is transparent or becomes transparent when cured. And a reinforcing layer formed by adhering a backing material via an adhesive on the back surface of the decorative veneer.

Further, in the method for manufacturing a decorative veneer according to the present invention, the decorative veneer is placed on the surface of the lining material via an adhesive and pressure-bonded to form a reinforcing layer by the lining material, It is possible to form a surface protective layer made of the transparent synthetic resin sheet by placing a transparent synthetic resin sheet on the surface of the backing decorative veneer with an adhesive that becomes transparent or transparent when cured and pressure-bonding the transparent synthetic resin sheet. Characterize.

As 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 are used. To be The decorative veneer generally has a thickness of 0.15 to 5 mm.

As the backing material to be attached to the back surface of the decorative veneer, Japanese paper, foreign paper, synthetic paper, non-woven fabric, woven cloth, syrup, resin-impregnated paper, synthetic resin sheet and the like are used.

After applying the adhesive to the surface of the backing material using a coating device such as a sprayer, a spreader, a flow coater, a curtain coater, or a bar coater, a decorative veneer is placed on the coated surface, cold pressed, hot pressed. Press and bond using a pressing device such as a press or roll press.
As the adhesive, vinyl acetate resin, urea resin, melamine resin, phenol resin, isocyanate,
Urethane resin-based, epoxy resin-based, acrylic resin-based, etc. adhesives are used alone or as an arbitrary mixture as a mixed adhesive. If necessary, talc, calcium carbonate, clay, titanium powder, and other inorganic powders, wheat flour, wood powder, plastic powder, colorants, insect repellents, fungicides, fragrances, deodorants, etc. are added to the adhesive. It can be mixed and used.

As the backing material, any colored backing material may be used. Further, as the adhesive used when the backing material and the decorative veneer are bonded together, an arbitrarily colored colored adhesive may be used. When the colored backing material or the colored adhesive is used, it is preferable that the colored backing material or the colored adhesive has a color substantially the same as the material color of the decorative veneer or the conduit groove of the decorative veneer, or a color darker than those colors. Thereby, in the through hole in which the conduit groove of the decorative veneer penetrates to the back surface, the shade of the through hole is emphasized and the design is improved.

As described above, the backing decorative veneer is obtained by forming the reinforcing layer on the back surface of the decorative veneer with the backing material bonded via the adhesive. The backing material may be applied to each leaf of the decorative veneer or may be continuously applied to a plurality of decorative veneers. The reinforcing layer by the backing material has the function of reinforcing the decorative veneer itself, preventing the decorative veneer from cracking, preventing the adhesive from seeping out to the surface of the decorative veneer, and preventing the occurrence of defective products. By facilitating handling, cracking can be prevented and productivity can be improved.

If desired, the surface of this veneered backing veneer can be coated with any desired color. Colored coating is generally applied to the surface of the decorative veneer with a sealer coating, sanding, etc., if necessary, and then coated with a colored coating using a coating device, and immediately sponge roll, brush roll, wool roll, etc. It is done by leveling and rubbing the paint with. In addition, the excess paint is removed by using a reverse roll if necessary. By applying colored coating, the surface color of the decorative veneer is unified,
The wood grain, conduit groove, etc. are remarkably exposed, and the design is improved.

Alternatively, on the surface of the backing veneer,
An arbitrary pattern such as a wood pattern, a conduit groove pattern, an abstract pattern, a mosaic pattern can be formed by printing. The print formation of the pattern is performed by using any printing method such as letterpress, intaglio, gravure, gravure offset, silk screen, and transfer. After applying the optional color coating as described above, an optional pattern may be formed by printing on the colored surface.

An adhesive that becomes transparent or becomes transparent when cured is sprayed, spreader, or
After coating using a coating device such as a flow coater, a curtain coater, or a bar coater, 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 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. This adhesive was obtained by itself being transparent or at least transparent when cured, and a transparent synthetic resin sheet adhered via the adhesive also forms a transparent surface protective layer. In the decorative veneer, the surface of the decorative veneer is exposed without being hidden.

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 color painting and pattern pattern printing arbitrarily applied to the surface, the wood texture is emphasized, a new tree species is expressed, or the depth is expressed. be able to.

Further, by providing a recess such as a pattern recess, a conduit groove recess, and a sanding recess on the surface of the transparent synthetic resin sheet, it is possible to improve the design. By filling the concave portion with a colored paint and coloring it, the design can be further improved.

A backing decorative veneer on which a transparent synthetic resin sheet is placed via an adhesive which becomes transparent or becomes transparent when cured is pressed by a cold press, hot press, roll press, laminator, wrapping or the like. The transparent synthetic resin sheet is adhered to the surface of the decorative veneer by pressing with, and a surface protective layer is formed.

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

The decorative veneer of the present invention can be made into a decorative plate by adhering it to the surface of the substrate with an adhesive and press-bonding. The decorative veneer is pasted on each substrate or continuously over a plurality of substrates.

As the substrate, plywood, wood board, wood fiber board, wood shaving board, laminated wood, single board laminated board or the like is used alone or as a laminated board formed by arbitrarily laminating. In addition, the substrate is arbitrarily cut, and a skirting board, a rim, a molding, a door, or a window on which the surface and the mouth end are optionally decorated by using a cutting machine such as a router or a cutter for chamfering or chamfering. 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 and / or the back surface of the decorative veneer using an application 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. For the adhesive, talc, calcium char,
Clay, inorganic powder such as titanium white, wheat flour, wood flour, plastic powder, colorant, insect repellent, fungicide and the like can be added and mixed. The adhesive has a solid content of 35 to 80%
The coating amount is 50 to 300 g / m ^{2 on} the substrate surface.

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.

[0029]

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. The decorative veneer is reinforced by a backing material that is adhered to the back surface to improve handleability and productivity.

[0030]

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 protective layer 3 is formed as a result, and a backing material is laminated and adhered to the back surface via an adhesive to form a reinforcing layer 5. Reference numeral 2 is a transparent adhesive layer, and 4 is an adhesive layer.

[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 by a simple working process. The decorative veneer 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, by forming a reinforcing layer by a backing material on the back surface of the decorative veneer, the decorative veneer itself is reinforced, the decorative veneer is prevented from cracking, and the adhesive is prevented from seeping out onto the decorative veneer surface. And the like, the occurrence of defective products is prevented, and the handling and productivity are improved.

[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 with transparent synthetic resin sheet 4 Adhesive layer 5 Reinforcing layer with backing material

Claims (9)

[Claims] 1. A surface protective layer is formed by adhering a transparent synthetic resin sheet on the surface of a decorative veneer via an adhesive that is transparent or transparent when cured, and an adhesive is applied to the back surface of the decorative veneer. A decorative veneer having a reinforcing layer formed by adhering a backing material through the veneer. 2. The decorative veneer according to claim 1, wherein the surface of the decorative veneer is arbitrarily colored. 3. The decorative veneer according to claim 1 or 2, wherein an arbitrary pattern is printed on the surface of the decorative veneer. 4. The decorative veneer according to claim 1, wherein the transparent synthetic resin sheet is a colored transparent synthetic resin sheet which is arbitrarily colored. 5. The decorative veneer according to claim 1, wherein an arbitrary pattern is printed on the back surface of the transparent synthetic resin sheet. 6. The decorative veneer according to claim 1, wherein the adhesive which is transparent or becomes transparent when cured is a colored adhesive which is arbitrarily colored. 7. The decorative veneer according to claim 1, wherein the backing material is arbitrarily colored. 8. The decorative single sheet according to claim 1, wherein the adhesive used for adhering the backing material to the back surface of the decorative veneer is a colored adhesive that is arbitrarily colored. Board. 9. A reinforced veneer is placed on the surface of the lining material via an adhesive and pressure-bonded to form a reinforcing layer by the lining material, and the surface of the lining veneer is transparent or cured. Then, a method for producing a decorative veneer characterized by forming a surface protective layer made of the transparent synthetic resin sheet by placing the transparent synthetic resin sheet via a transparent adhesive and press-bonding.