JPH07223203A - Decorative board and manufacture thereof - Google Patents

Abstract

PURPOSE:To form a surface protecting layer of an adequate thickness having sufficient strength and abrasion resistance on the surface of a decorative veneer by a simple working step sequence and thereby improve the productivity, in a decorative board consisting of a decorative veneer applied to a base material. CONSTITUTION:A decorative veneer is attached to the surface of a base material 1 through an adhesive layer 2, and at the same time, a thermofusible transparent synthetic resin sheet 4 is laminated on the surface of the decorative veneer by self-fusion to form a surface protecting layer.

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 work 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 attached to the surface of the substrate via an adhesive and a surface of the decorative veneer. In addition, a surface protective layer formed by self-welding a heat-meltable transparent synthetic resin sheet is formed.

The method for manufacturing a decorative board according to the present invention is
By placing a decorative veneer on the surface of the substrate via an adhesive and pressure-bonding the same, and then placing a heat-melting transparent synthetic resin sheet on the surface of the decorative veneer and heating and pressing it. The transparent synthetic resin sheet is melted and self-welded to the surface of the decorative veneer to form a surface protective layer.

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.

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.

On the surface of the decorative veneer attached to the surface of the substrate,
A heat-melting transparent synthetic resin sheet is placed. 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. 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 surface of the decorative veneer for each decorative veneer or continuously over a plurality of decorative veneers.

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 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 transparent synthetic resin having a heat-melting property is obtained by heat-pressing a substrate having a transparent synthetic resin sheet placed on the surface of a decorative veneer using a heat-pressing device such as a hot press or a heater roll press. The 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. in the case of a polyester sheet, and cellophane 110 to 20.
0 ° C, polyvinyl chloride sheet 100 to 170 ° C, polystyrene sheet 140 to 180 ° C, polyester sheet 1
It is 50 to 220 ° C.

The transparent synthetic resin sheet self-welds so as to be partly press-fitted into a recess such as a conduit groove on the surface of the decorative veneer, so that a so-called anchor effect works, and in combination with the welding force, the decorative synthetic resin sheet is firmly bonded. Layered on the board surface.

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

Alternatively, in the decorative board according to the present invention, a transparent synthetic resin sheet having a heat-melting property is placed on the surface of the decorative veneer, and the transparent synthetic resin sheet is melted by heating and pressing, whereby the decorative veneer is melted. It can be manufactured by a method characterized in that the surface protective layer is formed by self-welding to the surface of, and then the decorative veneer is placed on the surface of the substrate via an adhesive and pressure-bonded. .

[0021]

The surface protective layer is formed by self-welding a heat-meltable transparent synthetic resin sheet to the surface of the decorative veneer. The surface protective layer corresponds to the thickness of the transparent synthetic resin sheet used and is formed to have a uniform thickness.

[0022]

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 heat-meltable transparent synthetic resin sheet 4 is laminated by self-welding to form a surface protective layer.

[0023]

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 plate 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.

Further, 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.

[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 heat-melting transparent synthetic resin sheet (surface protection layer)

Claims (5)

[Claims] 1. A surface protective layer comprising a decorative veneer adhered to the surface of a substrate via an adhesive, and a heat-melting transparent synthetic resin sheet self-welded to the surface of the decorative veneer. A decorative board that is formed. 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. A decorative veneer is placed on the surface of a substrate via an adhesive and pressure-bonded, and then a heat-melting transparent synthetic resin sheet is placed on the surface of the decorative veneer and heated. A method for producing a decorative board, characterized in that the transparent synthetic resin sheet is melted by pressing and self-welded to the surface of the decorative veneer to form a surface protective layer. 5. A transparent synthetic resin sheet having a heat-melting property is placed on the surface of the decorative veneer and heated and pressed to melt the transparent synthetic resin sheet, and self-welded to the surface of the decorative veneer. A method for producing a decorative plate, which comprises forming a surface protective layer, and then placing the decorative veneer on the surface of a substrate via an adhesive and press-bonding the same.