JP2853008B2 - Decorative plate and manufacturing method thereof - Google Patents

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 of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a decorative veneer is adhered to the surface of a substrate via an adhesive, and then a colored paint is applied to the surface of the decorative veneer to apply a colored coating. It is widely practiced to apply a coating to form a surface protective layer to form a decorative plate.

[0003]

In the above-mentioned prior art, in order to give a sufficient function to the surface protective layer, it is necessary to repeatedly apply a top coat and to apply it thickly, which complicates the working process.

[0004] When thick coating is performed using a high-viscosity paint, if the coating speed or drying speed is high, uniform coating cannot be performed and foaming occurs during drying. These problems are avoided by reducing the speed, but on the other hand, a decrease in productivity is inevitable.

In view of the above circumstances, it has been practiced to abandon the thick coating of the top coat to form a relatively thin surface protective layer. In this case, however, the strength of the surface protective layer is reduced. Therefore, there are problems that the surface is easily scratched and has poor abrasion resistance, and a deep decorative surface cannot be obtained.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is 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. , To improve productivity.

In order to achieve the above object, the decorative board according to the present invention, which has been devised after devising a great deal of effort, has a decorative veneer adhered to the surface of a substrate via an adhesive and the surface of the decorative veneer. A pattern is formed by printing, and a transparent synthetic resin sheet having a recess on the surface is bonded to the entire surface of the decorative veneer via an adhesive which becomes transparent or cured to be transparent, thereby forming a recess on the surface. Characterized in that a surface protective layer having the following is formed.

[0008]

As the substrate, a plywood, a wood board, a wood fiber board, a wood chip board, a laminated wood, a veneer laminate board or the like is used alone or as a laminate board obtained by optionally stacking. In addition, the substrate is arbitrarily cut, and a skirting board, a surrounding edge, a molding, a door, a window, which is subjected to optional decoration such as grooving and chamfering using a cutting machine such as a router or a cutter on the surface or the edge of the edge, is provided. It can also be used as a base material for surface materials, construction materials, and the like used for such purposes.

[0010] An adhesive is applied to the surface of the substrate using an application device such as a sprayer, a spreader, or a bar coater. As the adhesive, an adhesive of a vinyl acetate resin type, a urea resin type, a melamine resin type, a phenol resin type, an isocyanate type, or the like is used alone or as a mixed adhesive obtained by arbitrary mixing. The adhesive contains a coloring agent, if necessary.
An insect repellent, a fungicide and the like can be added and mixed. Generally, the adhesive has a solid content of 35 to 80% and is applied to the substrate surface in an application amount of 50 to 300 g / m ² .

A decorative veneer is placed on the surface of the substrate to which the adhesive has been applied. As the decorative veneer, a slice veneer, a rotary veneer, a half land veneer, a sword veneer, etc. obtained by a cutting machine such as a slicer, a rotary lace, a half land rotary lace, a circular saw, a band saw and the like are used. The thickness of the decorative veneer is generally used in the range of 0.15 to 5 mm.

On the back of the decorative veneer, Japanese paper, Western paper, synthetic paper,
A backing material such as a nonwoven fabric, a woven fabric, a cold gauze, an impregnated paper, or a synthetic resin sheet may be attached and used. By attaching the backing material, the veneer veneer itself is reinforced, the veneer veneer is prevented from drying, the adhesive is prevented from seeping out of the veneer surface, and the occurrence of defective products is prevented. At the same time, handling becomes easy, so that cracks can be prevented and productivity can be improved. The backing material may be adhered to each decorative veneer leaf or may be continuously adhered 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, and instead of or in addition to applying the adhesive to the surface of the substrate as described above,
An adhesive may be applied to the back of the veneer veneer optionally backed. The decorative veneer may be attached to each substrate or may be attached continuously over a plurality of substrates.

The substrate on which the decorative veneer is placed for each leaf or continuously through the adhesive as described above 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 using a sticking device such as the above.

The surface of the decorative veneer thus adhered to the surface of the substrate via an adhesive has a grain pattern, a conduit groove pattern,
By printing and forming an arbitrary pattern such as an abstract pattern or a mosaic pattern, the design can be improved. The pattern may be formed by printing directly on the surface of the decorative veneer, or may be formed by printing after applying a base treatment such as coloring or sealing as required. The printing of the pattern is performed by using an arbitrary printing method such as letterpress, intaglio, gravure, gravure offset, silk screen, and transfer.

After an arbitrary pattern is printed and formed on the surface of the decorative veneer in advance as described above, this may be adhered to the surface of the substrate via an adhesive.

Spray, spreader, flow coater, curtain coater, bar, etc., on the whole surface of the veneer veneer adhered to the surface of the substrate and having an arbitrary pattern printed thereon is transparent or cured. After applying using a coating device such as a coater, a transparent synthetic resin sheet having a concave portion on the surface is placed. The transparent synthetic resin sheet is placed on the top surface of the veneer veneer for each veneer veneer or continuously over a plurality of veneer veneers.

Adhesives used at this time, which are transparent or cured when cured, include vinyl acetate resin, urea resin, melamine resin, phenol resin, acrylic resin, urethane resin, and isocyanate adhesives. And used alone or as an arbitrary mixture of mixed adhesives. If necessary, a coloring agent may be added to this adhesive to be used as a coloring adhesive. Since the adhesive itself is transparent or at least becomes transparent when cured, it appears on the surface of the decorative plate without hiding the surface of the decorative veneer in the obtained decorative plate.

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 a sheet having a thickness of 0.005 to 1 mm.

The transparent synthetic resin sheet used in the present invention has a concave portion on its surface. The sheet material is embossed by using an embossing machine, an embossing roll, a wire brush, a sander or the like. ,
A recess in the surface is formed. The recesses on the surface of the transparent synthetic resin sheet simulate the recesses of a natural woody material such as conduit grooves, hairlines, and wormholes, and the woody effect is emphasized by the shading effect of the recesses.

Further, when the transparent synthetic resin sheet is adhered to the surface of the decorative veneer, an adhesive which is transparent or cured and becomes transparent is used. Since the surface of the decorative veneer is exposed through the layer, the concave portion of the decorative veneer itself and the concave portion formed on the surface of the transparent synthetic resin sheet are combined to form an extremely distinctive feature. Design can be exhibited.

As the transparent synthetic resin sheet, an arbitrary colored colored synthetic resin sheet can be used. Further, a colorless or colored transparent synthetic resin sheet having an arbitrary pattern printed on the back surface may be used. Thus, in combination with the original surface design of the decorative veneer and the pattern printed and formed on the surface, it is possible to emphasize the feeling of wood, express a new tree species, or express depth. The design as a plate is further improved.

Cold press, hot press, roll press, laminator, wrapping, rimping machine is used to bond a substrate on which a transparent synthetic resin sheet is mounted via an adhesive which becomes transparent or hardens when hardened on the entire surface of the veneer veneer. By pressing using a pressing device such as a vacuum press, the transparent synthetic resin sheet is adhered to the surface of the decorative veneer to form a surface protective layer.

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

Further, after applying a colored paint to the entire surface of the decorative plate using the above-described coating apparatus, preferably immediately afterwards, using a reverse roll coater, the surface excluding the recesses of the surface protective layer is removed. By removing the colored paint applied to the portion and leaving the colored paint only in the recess, the inside of the recess of the surface protective layer can be colored. As a result, the recesses of the surface protective layer are more emphasized and the design is improved.

Alternatively, the decorative veneer according to the present invention has a decorative veneer in which an arbitrary pattern is printed and formed on the surface in advance.
Via a transparent or cured adhesive that becomes transparent, a transparent synthetic resin sheet having a recess on its surface is placed and pressed and bonded to form a surface protective layer having a surface recess made of the transparent synthetic resin sheet. After forming, the decorative veneer is placed on the surface of the substrate with an adhesive and pressed and bonded to produce a veneer veneer.

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 substrate surface to form a decorative plate, the surface protective layer is formed as described above. Only the inside of the recess can be colored.

[0028]

The transparent protective resin sheet is adhered to the surface of the decorative veneer via an adhesive which becomes transparent or cured when it is cured, thereby forming a surface protective layer. The surface protective layer corresponds to the thickness of the transparent synthetic resin sheet used,
Moreover, it is formed to have a uniform thickness.

A concave portion is formed on the surface of the transparent synthetic resin sheet by embossing, and the concave portion is exposed on the surface of the surface protective layer in the decorative board, so that the wooden texture is emphasized.

[0030]

FIG. 1 schematically shows a decorative veneer according to the present invention, in which a decorative veneer 3 is laminated on the surface of a substrate 1 with an adhesive layer 2 interposed therebetween. A printed portion 4 of a pattern is formed, and a transparent synthetic resin sheet having a concave portion on the surface is further laminated and adhered on the upper surface thereof through an adhesive which becomes transparent or cured to form a surface protective layer 6. doing. 5 is a transparent adhesive layer, and 8 is a recess such as a conduit groove on the surface of the decorative veneer 3. The recess formed on the transparent synthetic resin sheet by embossing or the like and representing a pseudo conduit groove or the like appears as the surface recess 7 of the surface protection layer 6.
Although not shown in this embodiment, the surface recess 7
Can be colored by filling with a coloring paint.

[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 in a decorative panel by a simple operation 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.

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, no change is required for the manufacturing equipment.

Further, on the surface of the surface protective layer, a surface recess is formed which simulates a conduit groove or the like, so that a wooden texture can be emphasized. Furthermore, a decorative plate having extremely excellent design properties is provided in combination with an arbitrary pattern printed and formed on the surface of the decorative veneer.

[Brief description of the 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 Printing part 5 Transparent adhesive layer 6 Surface protective layer 7 Surface recess

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) B32B 33/00 B27D 5/00 B32B 3/30 B32B 7/12 B32B 21/08

Claims (5)

(57) [Claims] 1. A decorative veneer is adhered to the surface of a substrate via an adhesive, and a pattern is printed and formed on the surface of the decorative veneer. A decorative plate, comprising: a transparent synthetic resin sheet having a concave portion on its surface adhered via an adhesive which becomes transparent when cured, to form a surface protective layer having a concave portion on the surface. 2. The decorative board according to claim 1, wherein said transparent synthetic resin sheet is a colored transparent synthetic resin sheet which is arbitrarily colored. 3. A pattern formed by printing a pattern on the back surface of the transparent synthetic resin sheet.
Decorative board. 4. The decorative board according to claim 1, wherein said transparent or cured adhesive becomes transparent when it is colored. 5. The decorative plate according to claim 1, wherein a surface recess of said surface protective layer is arbitrarily attached.