JPH07241806A - Decorative veneer and manufacture thereof - Google Patents

Abstract

PURPOSE:To form a surface protecting layer, prominent in strength as well as abrasion resistance and provided with a sufficient thickness, on the surface of a decorative veneer by simple working process, contrive the improvement of productivity, increase the bonding strength of the surface protecting layer to the surface of the decorative veneer and improve the decorative property of the veneer by expressing wooden feeling emphasizingly. CONSTITUTION:A decorative veneer is formed of a decorative veneer 1 and a surface protecting layer 2, consisting of hot-melt transparent synthetic resin sheet laminated on the surface of the decorative veneer 1 through self fusion welding and formed on the decorative veneer 1. The transparent synthetic resin sheet is bonded through self fusion welding so that the resin is forced into recesses 3 such as vessel grooves and the like on the surface of the decorative veneer. According to this method, recesses 4 are realized on the surface of the surface protecting layer. Coloring can be applied on the recesses 14 by pigmented coating 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 devised after earnest efforts to achieve the above object has a surface protective layer in which a heat-melting transparent synthetic resin sheet is self-welded to the surface of the decorative veneer. It is characterized in that recesses such as conduit grooves formed on the surface of the decorative veneer are exposed on the surface of the surface protective layer.

In the method for producing a decorative veneer according to the present invention, the transparent synthetic resin sheet is placed on the surface of the decorative veneer, and the transparent synthetic resin sheet is melted by heating and pressing, It is characterized in that it is self-welded to the surface of the decorative veneer to form a surface protective layer in which recesses such as conduit grooves on the surface of the decorative veneer are exposed on the surface.

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.

A heat-melting transparent synthetic resin sheet is placed on 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, etc. are preferably used. Moreover, you may use what coat | covered these sheets with the heat adhesive resin. Generally, transparent synthetic resin sheet is 0.005-1m
Used as having a thickness of m. 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 which 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 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.

The decorative synthetic veneer on the surface of which the transparent synthetic resin sheet is placed is heated and compressed by using a thermal compression device such as a hot press or a heater roll press to obtain a transparent synthetic resin sheet having a heat melting property. It 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, cellophane 110 to 200 ° C.,
Polyvinyl chloride sheet 100-170 ° C, polystyrene sheet 140-180 ° C, polyester sheet 150-
It is 220 ° C.

As described above, the transparent synthetic resin sheet is as thin as about 0.005 to 1 mm, and more preferably has a thickness not more than the diameter of the recesses such as the conduit groove, hairline, and wormhole of the decorative veneer. By selecting those having the above-mentioned, when heat-welding, the surface protective layer is formed by self-welding so as to partially press-fit into the recesses on the surface of the decorative veneer, and the recesses are exposed on the surface. 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-melting transparent synthetic resin sheet itself, and the surface of the surface protective layer. Due to the shadow effect of the recess appearing in Fig. 3, the wood texture of the decorative veneer is emphasized and the design is improved.

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

Further, after applying the colored paint to the general surface of the decorative veneer using the above-mentioned coating apparatus, preferably immediately after that, using a reverse roll coater, it appears on the surface of the surface protective layer. By removing the colored coating material applied to the surface portion excluding the recessed portion and leaving the colored coating material only in the recessed portion, the inside of the recessed portion of the surface protective layer can be colored and coated. 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 on a substrate via an adhesive to form a decorative plate.

As the substrate, plywood, wood board, wood fiber board, wood shaving board, laminated wood, single board laminated board, etc. are used alone or as a laminated board which is arbitrarily laminated. 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 of them using a coating 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 attached to each leaf of the substrate or may be attached continuously to a plurality of substrates.

In this way, the substrate on which the decorative veneer is placed for 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.

[0022]

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.

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. Recesses such as conduit grooves on the surface of the decorative veneer appear on the surface of the surface protective layer to emphasize the wood texture.

[0024]

EXAMPLE FIG. 1 schematically shows a decorative veneer according to the present invention. A surface protective layer 2 in which a heat-meltable transparent synthetic resin sheet is laminated on the surface of a decorative veneer 1 by self-welding. Are formed with a substantially uniform layer thickness.

The transparent synthetic resin sheet is self-welded by being press-fitted into a recess 3 such as a conduit groove on the surface of the decorative veneer 1, and a recess 4 appears on the surface of the surface protective layer 2. Has been done. In this embodiment, the colored paint 5 is filled in the recess 4.

[0026]

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, since the surface protective layer is firmly layered on the surface of the decorative veneer, peeling does not occur, and recesses such as conduit grooves appear on the surface of the decorative veneer. Therefore, the wood texture 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 Surface protection layer 3 Recesses on the surface of decorative veneer 4 Recesses on the surface protection layer 5 Colored paint

Claims (6)

[Claims] 1. A surface protective layer formed by self-welding a heat-meltable transparent synthetic resin sheet on the surface of a decorative veneer, and the surface protective layer has recesses such as conduit grooves on the surface of the decorative veneer. A decorative veneer characterized by being exposed on the surface of. 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 decorative veneer according to claim 1, wherein an arbitrary pattern is formed on the back surface of the transparent synthetic resin sheet. 4. The decorative veneer according to claim 1, wherein the inside of the recess exposed on the surface of the surface protective layer is arbitrarily colored. 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 veneer, comprising forming a surface protective layer in which recesses such as conduit grooves on the surface of the decorative veneer are exposed on the surface. 6. A colored paint is applied to the surface of the surface protective layer, and then the colored paint applied to the surface portion except the recesses exposed on the surface is removed, and the colored paint is applied in the recesses. The method for producing a decorative veneer according to claim 5, wherein the decorative veneer is left.