JPH0985897A - Decorative plate and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative plate which makes it possible to improve the design while utilizing the concave upward of a substrate timber and to facilitate incinerating and a method for manufacturing the plate. SOLUTION: A transparent olefin resin sheet 4 having a recess 5 corresponding to the vessel hole of a broad-leafed tree on the front surface and a woodgrain pattern 3 on the rear surface via a transparent or arbitrarily colored adhesive 2 is provided on a plate-like base material 1 made of material obtained by providing a conifer material or timber fancy veneer on the arbitrary base material, coloring ink 6 is arbitrarily filled in the surface recess, and a transparent protective layer 7 is provided on the surface.

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 and a material for indoor consumer goods and a method for manufacturing the same. In particular, the decorativeness is improved while utilizing the luster of a wood board, An easy decorative board and its manufacturing method.

[0002]

2. Description of the Related Art Conventionally, as a decorative plate used as a surface material for interiors and furniture, a veneer decorative plate in which a wood veneer is laminated on the surface of a base material has been widely used. However, in recent years, natural resources such as cherry blossoms, teak, and walnut have been depleted, and veneer decorative boards using these materials have been replaced with plywood, MDF, and other decorative sheets with these patterns printed on them. A lot of combined decorative boards are used.

However, with this method, the expressiveness of the so-called shiny feeling inherent in wood is limited. Further, since a vinyl chloride sheet which is easy to process and has excellent flexibility and colorability has been mainly used for the decorative sheet, there is a problem that hydrogen chloride gas is generated when the waste material is incinerated.

Therefore, as another method, there is a method of forming a desired wood grain pattern by a transfer method on a relatively easily available softwood material as a base material. According to this method, it is possible to express the feeling of luster of wood, but with this method it was not possible to express the duct hole characteristic of hardwood.

In addition, it was not possible to form irregularities corresponding to conduit holes on the surface by pattern transfer to wood.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to improve the design while making the best use of the luster of the base wood, and It is an object of the present invention to provide a decorative board characterized by being easily incinerated and a method for producing the same.

[0007]

In order to achieve the above object in the present invention, in claim 1, a softwood material or a wood veneer veneer is provided on a plate-shaped substrate made of a material provided on any substrate. , A transparent olefin resin sheet having a concave portion corresponding to the hole of hardwood lumber on the surface and a wood grain pattern on the back surface is provided through a transparent or arbitrary colored adhesive, and the concave portion on the surface is arbitrarily filled with colored ink Provided is a decorative board having a transparent protective layer on the surface thereof.

According to a second aspect of the present invention, a transparent olefin resin is melt-extruded on the surface of a cooling embossing roll having a convex portion corresponding to a conduit of hardwood, pressure-bonded, cooled and peeled off, and a wood pattern is printed on the back surface. On the other hand, a transparent or arbitrary coloring adhesive is applied on a plate-shaped substrate made of a softwood material or a wood veneer veneer provided on an arbitrary substrate, and the transparent olefin resin is used to print a wood grain pattern. There is provided a method for manufacturing a decorative board, characterized in that the side and the adhesive side of the plate-shaped substrate are pressure-bonded, the surface recesses are optionally filled with a coloring ink, and the surface is provided with a transparent protective layer.

[0009]

Embodiments of the present invention will be described below. FIG. 1 shows an example of a decorative board according to the present invention. A softwood board is used as the base material 1, and a transparent olefin resin sheet 4 having a conduit hole 5 corresponding to a hardwood material on the surface and a wood grain pattern 3 formed on the back surface is attached via a urethane adhesive 2 to the base material 1. By combining them, it is possible to obtain a decorative board that is excellent in design and easy to incinerate.

The transparent olefin resin sheet 4 is manufactured by using the extruder shown in FIG. A method is used in which the olefin resin is extruded from the T die 8 and the molten resin 9 is solidified while being compressed by the pressure roll 11 by the cooling roll 10 provided with the uneven shape. As an olefin resin,
Starting with polypropylene resin and polyethylene resin,
These modified resins are used. It is preferable that the transparent olefin resin sheet has a thickness of 80 to 150 μm and an emboss depth of 95% or less of the thickness in terms of transparency and designability of the sheet.

The embossed surface of the transparent olefin-based resin sheet after embossing improves the wetting of the ink into the recesses, and then fills the recesses with colored ink 6 and the transparent olefin-based transparent olefin layer 7 of the transparent protective layer 7. Corona treatment or the like is also preferably performed in order to improve adhesion to the resin sheet.

Further, it is possible to print a wood grain pattern with ink on the non-embossed surface of the transparent olefin resin sheet after embossing by a conventional method.

[0013]

【Example】

<Example 1> A polypropylene resin was used as a transparent olefin resin, and this was extruded using an extruder. A cherry tree, a hardwood material, was used as an original to obtain an embossed cooling roll with a sheet thickness of 100 µm and an emboss depth. 95μ
After forming the sheet into a sheet having a size of m or less, a wood grain pattern was printed on the non-embossed surface with a transparent ink, and the sheet was wound.

A pine wood plate, which is a softwood material, is used as a base material to which the above-mentioned sheet is attached, a transparent urethane adhesive is applied to the base material, and they are laminated and pressed at 30 to 50 ° C. using a pressing machine. Then, the decorative plate was obtained.

Example 2 A polypropylene resin was used as a transparent olefin resin and extruded using an extruder, and if it was a hardwood material, the material was used as a manuscript to obtain an embossed cooling roll. After forming a sheet so that the embossing depth is 120 μm or less and 100 μm or less, a wood grain pattern is printed on the non-embossed surface with transparent ink,
Furthermore, after corona treatment was applied to the embossed surface to make it wet easily, the ink was wiped on the sheet to fill the recesses with the ink, and then the transparent protective layer was coated to wind the sheet.

A pine wood plate, which is a softwood material, is used as a base material to which the above-mentioned sheet is attached, a transparent urethane adhesive is applied to the base material, and they are laminated and pressed at 30 to 50 ° C. using a press machine. Then, the decorative plate was obtained.

The decorative board obtained as described above had a design hole-like design as if it were a hardwood material, while having the lumber and luster of the pine wood as the base material and having a duct hole.

[0018]

As described above, the present invention has the following effects. That is, it is possible to obtain a decorative board having a rich wood grain pattern and a conduit hole of a hardwood without damaging the appearance of the softwood of the base material. In addition, by filling the embossed portion of the decorative sheet with the coloring ink and providing the transparent protective layer on the surface, there is an effect of further improving the designability of the hardwood material. Since the decorative sheet is manufactured using the extruder, the reproducibility of the embossed shape is improved as compared with the conventional doubling embossed one, and the back surface can be smoothed to be suitable as an adhesive surface. Further, since it is a decorative sheet using an olefin resin, it has an effect that no toxic gas is generated during combustion and that it is easily incinerated. In addition, by using a hardwood design and using a relatively inexpensive softwood material as a base material, it is possible to reduce the cost of manufacturing a decorative board. Therefore, the present invention exerts an excellent practical effect in terms of designability, manufacturing cost, and ease of incineration as a building material and interior material.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a cross-sectional structure of an example of a decorative board of the present invention.

FIG. 2 is a schematic view showing steps of one embodiment of a method for manufacturing a decorative board of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Adhesive 3 ... Ink 4 ... Transparent olefin resin sheet 5 ... Embossing part 6 ... Wiping ink 7 ... Transparent surface protective layer 8 ... T die 9 ... Molten olefin resin 10 ... Embossed cooling roll 11 ... Pressure roll 12 ... Peeling roll

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuo Aizawa 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (2)

[Claims] 1. A conduit for a hardwood material on a surface of a plate-shaped base material made of a softwood material or a wood veneer veneer provided on an arbitrary base material via a transparent or arbitrary colored adhesive. A decorative board characterized in that a transparent olefin resin sheet having a concave portion corresponding to a hole and having a grain pattern on the back surface is provided, and optionally a concave ink on the surface is filled with colored ink and a transparent protective layer is applied on the surface. 2. A transparent olefin resin is melt-extruded on the surface of a cooling embossing roll having a convex portion corresponding to a conduit of a hardwood material, pressure-bonded, peeled after cooling, and a wood grain pattern is printed on the back surface, while softwood Material or wood veneer veneer A transparent or arbitrary colored adhesive is applied on a plate-shaped substrate made of a material provided on an arbitrary substrate, and the transparent olefin resin has a wood pattern printed side and a plate-shaped substrate. A method for producing a decorative board, which comprises press-bonding a material to the adhesive side, optionally filling a concave portion on the surface with a coloring ink, and applying a transparent protective layer on the surface.