JP3672636B2 - Manufacturing method of decorative board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative board used for building materials and indoor consumer goods materials, and a method for producing the same, and in particular, a decorative board that improves design while taking advantage of the shine of a wood board and is easy to incinerate, and the production thereof Regarding the method.
[0002]
[Prior art]
Conventionally, as a decorative plate used as a surface material for interiors and furniture, a veneer decorative plate in which a single wood plate is bonded to the surface of a base material has been widely used. In recent years, however, natural resources, especially cherry tree, teak, walnut, and other hardwood materials are used up, and decorative sheets with these patterns printed on base materials such as plywood and MDF are used instead of veneer decorative boards. Many decorative panels are used.
[0003]
However, with this method, there is a limit to the expression of the so-called shimmering feeling inherent in wood. In addition, since vinyl chloride sheets that are easy to process and have excellent flexibility and colorability have been mainly used as decorative sheets, there has been a problem that hydrogen chloride gas is generated during incineration of waste materials.
[0004]
Therefore, as another method, there is a method in which an arbitrary wood grain pattern is formed by a transfer method on a softwood material that is relatively easily available. According to this method, it is possible to express the shimmering feeling of wood, but with this method, it has not been possible to express the channel hole characteristic of hardwood.
[0005]
In addition, when transferring the pattern to the wood, it was not possible to form irregularities corresponding to the duct holes on the surface.
[0006]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-mentioned problems, and the problem is that while using a softwood material that is relatively easy to obtain from a resource aspect and inexpensive as a base material, An object of the present invention is to provide a decorative board having a rich wood grain pattern and a design of a conduit hole of a broad-leaved wood material, which can be easily incinerated, and a method for producing the same , while taking advantage of the shine of the softwood material .
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems in the present invention, in claim 1, a transparent olefin resin is melt-extruded on the surface of a cooling embossing roll having a convex portion corresponding to a hardwood material conduit, pressure-bonded, peeled after cooling, and back surface On the other hand, a transparent or arbitrary colored adhesive is applied onto a plate-like substrate made of coniferous material, and the transparent olefin resin wood-grain pattern printing side and the plate-like substrate adhesive side And a decorative board manufacturing method characterized by comprising: In addition, coloring ink may be filled in arbitrary surface concave portions, and a transparent protective layer may be applied to the surface.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows an example of a decorative board according to the present invention. A transparent olefin resin sheet 4 having a conduit hole 5 corresponding to a hardwood material on the front surface and a wood grain pattern 3 formed on the back surface is attached through a urethane adhesive 2 using a softwood board as a base material 1. By combining them, it is possible to obtain a decorative board that is excellent in design and easy to incinerate.
[0010]
The transparent olefin resin sheet 4 is manufactured using the extrusion apparatus shown in FIG. A method is used in which the olefin resin is extruded from the T die 8 and solidified while the molten resin 9 is compressed by the pressure roll 11 with the cooling roll 10 provided with the uneven shape.
As the olefin resin, modified resins such as polypropylene resin and polyethylene resin are used.
The transparent olefin-based resin sheet preferably has a thickness of 80 to 150 μm and an emboss depth of 95% or less of the thickness in terms of transparency and design of the sheet.
[0011]
On the embossed surface of the transparent olefin-based resin sheet after embossing, wetting of the ink into the recesses is improved, and thereafter, the colored ink filling into the recesses provided arbitrarily and the transparent olefin-based resin sheet of the transparent protective layer 7 are performed. In order to improve the adhesion, the corona treatment is preferably performed.
[0012]
Moreover, it is possible to print the wood grain pattern with the ink by the conventional method on the non-embossed surface of the transparent olefin resin sheet after emboss molding.
[0013]
【Example】
<Example 1>
Polypropylene resin is used as the transparent olefin resin, and this is extruded using an extruder, and the sheet thickness is 100 μm and the emboss depth is 95 μm or less with an embossed cooling roll obtained using cherry wood, which is a hardwood material. After forming the sheet, a wood grain pattern was printed with a transparent ink on the non-embossed surface, and the sheet was wound.
[0014]
A pine board, which is a softwood material, is used as a base material to which the sheet is attached, a transparent urethane adhesive is applied to the base material, bonded together, and pressed with a press at 30 to 50 ° C. I got a plate.
[0015]
<Example 2>
A polypropylene resin is used as a transparent olefin resin, and this is extruded using an extruder. If it is a hardwood material, it is a cooling roll with embossing obtained using the material as a manuscript, with a sheet thickness of 120 μm and an emboss depth of 100 μm or less. After forming the sheet, print a wood grain pattern with a transparent ink on the non-embossed surface, corona treatment on the embossed surface to make it easy to wet, and then wiping the ink on the sheet to fill the recess with ink Thereafter, the transparent protective layer was coated and the sheet was wound.
[0016]
A pine board, which is a softwood material, is used as a base material to which the sheet is attached, a transparent urethane adhesive is applied to the base material, bonded together, and pressed with a press at 30 to 50 ° C. I got a plate.
[0017]
The decorative board obtained as described above had a design like a hardwood material with a tract hole, taking advantage of the luster and shine of the pine material of the base material.
[0018]
【The invention's effect】
Since this invention is the above structure, there exist the following effects.
That is, a decorative board having a rich wood grain pattern of hardwood material and a tract hole is obtained without impairing the shine of the softwood material of the base material.
Moreover, the embossed part of the decorative sheet is filled with colored ink, and a transparent protective layer is provided on the surface, thereby further improving the design of the hardwood material.
Since the decorative sheet is manufactured by using an extruder, the reproducibility of the embossed shape is improved as compared with that by the conventional doubling embossing, and there is an effect that the back surface can be smoothed to be suitable for the adhesive surface.
Moreover, since it is a decorative sheet using an olefin resin, there is an effect that no toxic gas is generated during combustion and incineration is easy.
In addition, the use of a hardwood design and the use of a relatively inexpensive softwood material as the base material can reduce the cost of manufacturing the decorative board.
Therefore, the present invention exhibits excellent practical effects in terms of designability, manufacturing cost, and simplicity of incineration for building materials and interior use.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a cross-sectional structure of an example of a decorative board of the present invention.
FIG. 2 is a schematic view showing the steps of an embodiment of the method for producing a decorative board of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Base material 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 ... Cooling roll provided with embossing 11 ... Pressure roll 12 ... Peeling roll

Claims (1)

  A transparent olefin-based resin is melt-extruded on the surface of a cooled embossing roll having a convex portion corresponding to a hardwood tree conduit, pressure-bonded, peeled off after cooling, and printed with a grain pattern on the back, while a plate-like substrate made of softwood material A method for producing a decorative board, comprising applying a transparent or arbitrary colored adhesive on a material and press-bonding the wood pattern printing side of the transparent olefin resin and the adhesive side of the plate-like substrate. .

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