JP2000037709A - Wooden decorative sheet and manufacture of wooden decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wooden decorative sheet whose manufacturing process is simplified and which hardly absorbs water and exhibits high performances and does not exhibit dark color and has good appearance, and a method for manufacturing it. SOLUTION: This wooden decorative sheet A is manufactured by forming an intermediate density fiber sheet 4 by binding and hardening broadleaf tree fibers 3 with a resin 2 contg. a coloring agent 1 for making the color light- colored and sticking a wooden thin veneer 5 on the surface of this intermediate density fiber sheet 4. In this case, joint-like recessed channels 6 with a depth reaching the intermediate density fiber sheet 4 are graved on the surface of the wooden thin veneer 5. In addition, it may be possible that after the wooden thin veneer 5 is stuck on the surface of the intermediate density fiber sheet 4, cutting treatment is applied on the surface of the wooden thin veneer 5 to form the joint-like recessed channels 6 with a depth reaching the intermediate density fiber sheet 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a medium density fiberboard (M
The present invention relates to a decorative wooden board obtained by sticking a thin wooden veneer to the surface of DF) and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a wooden decorative board B in which a thin wooden veneer 5 is adhered to the surface of a medium-density fiberboard 4 is shown.
Is known. In this case, the medium-density fiberboard 4 is formed by bonding and hardening the hardwood fibers 3 with the resin 2, and the surface of the thin wooden veneer 5 has a joint-like groove having a depth that penetrates into the medium-density fiberboard 4. 6 is engraved, and a chamfer 8 of the same depth is engraved on the edge portion of the same surface.

In this case, since the hardwood fiber 3 is generally dark, the medium-density fiberboard 4 mainly composed of the hardwood fiber 3 also becomes dark, and the dark color passes through the thin wooden veneer 5. After applying a pigment such as veneer coat to the surface of the medium-density fiberboard 4 to form a concealing layer 9 and lighten it so as not to be exposed, the thin wood veneer 5 is attached to the surface of the concealing layer 9. I'm wearing

[0004]

However, in the above-mentioned prior art, before attaching the thin wooden veneer 5 to the surface of the medium-density fiberboard 4, the surface of the medium-density fiberboard 4 is coated with a veneer coat or the like. However, there is a problem that a pretreatment step of applying the pigment of (1) to form the concealing layer 9 is required, and the manufacturing process is complicated. Moreover, the dark color of the medium-density fiberboard 4 is
However, there is a problem that the medium-density fiberboard 4 is exposed at the joint-like concave groove 6 and the chamfered portion 8 and its dark color is exposed, which hinders the appearance.

[0005] In addition, since softwood fibers are generally light-colored,
The softwood fiber is used in place of the hardwood fiber 3, which is bonded and solidified with the resin 2 in the same manner as described above, and
By forming the above, the above problem can be solved temporarily. However, in this case, the medium-density fiberboard 4 made of softwood fiber generally has a higher swelling rate than that of the hardwood fiber 3 and is easily absorbed by water, and swells, and the thin wood plate attached to the surface thereof Another problem is that the veneer 5 is peeled off.

[0006] The present invention was invented in order to solve all the problems in the above-mentioned conventional technology.
The problem is to provide a wood decorative board which has a simplified manufacturing process, hardly absorbs moisture, has high performance, does not display a dark color and has a good appearance, and a method for manufacturing a wooden decorative board which obtains the wood decorative board. That is.

[0007]

According to a first aspect of the present invention, there is provided a wood decorative board according to the present invention, wherein hardwood fibers are bound and solidified with a resin containing a colorant for lightening to form a medium-density fiberboard. A thin wooden veneer is adhered to the surface of a medium-density fiberboard.

[0008] Therefore, in this case, the medium-density fiberboard lightened by binding and hardening the hardwood fibers with the resin containing the colorant is formed. A thin wooden veneer can be adhered to the same surface without separately performing a pretreatment step, and the manufacturing process can be simplified. Moreover, it uses hardwood fibers that have a lower swelling rate than softwood fibers, so it is difficult to absorb moisture, and the medium-density fiberboard swells and the thin wood veneer attached to the surface peels off. Never. Also, even if the hardwood fibers themselves are dark colored, the medium-density fiberboard is lightened by the resin containing the colorant, so the same dark color is prevented from being transmitted through the thin wood veneer. Thus, a good appearance can be obtained without affecting the color tone of the thin wooden veneer.

According to a second aspect of the present invention, there is provided the wood decorative board according to the first aspect, wherein the surface of the thin wooden veneer is formed with a joint-like groove having a depth penetrating into the medium density fiberboard. It is characterized by having been established.

[0010] Therefore, in this case, in particular, a deep joint-like groove that penetrates into the medium-density fiberboard is engraved on the surface of the thin wooden veneer, so that a three-dimensional appearance can be exhibited. The medium-density fiberboard is lightened up to the inside by the resin containing the colorant, but the dark color of the hardwood fiber does not appear in the same joint-like groove, and the above-mentioned good appearance Does not hinder

According to a third aspect of the present invention, there is provided a method for producing a decorative wood board, comprising mixing a hardwood fiber with a resin containing a colorant for lightening, press-integrating the mixture, and forming a medium-density fiberboard. A method of attaching a thin wooden veneer to the surface of the medium density fiberboard.

[0012] Therefore, in this case, after mixing the hardwood fiber and the resin and pressing and integrating to form a medium density fiberboard,
In the manufacturing process of attaching a thin wooden veneer to the surface of the medium-density fiberboard, it is possible to easily obtain a wooden decorative board having the same operation and effect as in the first aspect.

According to a fourth aspect of the present invention, there is provided a method for manufacturing a decorative wooden board according to the third aspect, wherein the thin wooden veneer is attached to a surface of a medium density fiberboard, and then the wooden board is laminated. It is characterized in that the surface of the thin veneer is subjected to a cutting process to form joint-like concave grooves having a depth penetrating into the medium density fiberboard.

Therefore, in this case, in particular, after the method for producing a decorative wooden board according to claim 3, the surface of the thin wooden veneer is subjected to a cutting process so as to have a depth into the medium-density fiberboard. By forming, it is possible to easily obtain a wooden decorative board having the same effects as the above-described second aspect.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment corresponding to all of claims 1 to 4 of the present invention. In this embodiment, a woody decorative board A contains a coloring agent 1 for lightening. The hardwood fiber 3 is bonded and solidified with the resin 2 contained to form a medium density fiberboard 4, and a thin wood veneer 5 is adhered to the surface of the medium density fiberboard 4. A joint groove 6 having a depth penetrating into the medium-density fiberboard 4 is formed on the surface of the joint 5.

In the method for producing a wood decorative board according to this embodiment, a hardwood fiber 3 and a resin 2 containing a colorant 1 for lightening are mixed and press-integrated to form a medium-density fiberboard 4. ,
Thereafter, a thin wooden veneer 5 is adhered to the surface of the medium-density fiberboard 4. In this case, the surface of the thin wooden veneer 5 is further subjected to a cutting process to form the medium-density fiberboard 4. The joint-like concave groove 6 having a depth penetrating into the groove may be formed.

FIG. 2 is a process chart showing a schematic flow of the method for producing a wood veneer, and the details will be described along the process chart. The hardwood fiber 3 is a small piece of hardwood such as zelkova, nara, and sashimi, which is dried in advance, and then the resin 2
Is spray-applied in the form of a mist and is passed through a tornado-shaped wind to be mixed. As the resin 2, a resin generally used for producing MDF, for example, a urea-formaldehyde resin, a paraffin resin, or the like is used. Is contained. In this case, the ratio is set such that resin 2: colorant 1 = 100: 2, hardwood fiber 3: resin 2 = 100: 10.

Next, the hardwood fiber 3 to which the resin 2 has been added is prepared and shaped into a mat having a certain thickness, and the mat is further hot-pressed by a continuous press to obtain a medium density fiberboard 4.
The hot pressing conditions in this case are, for example, a temperature of 180 ° C. and a time of
The pressure is set to 20 kg / cm ² for 15 minutes, and the formed medium-density fiberboard 4 has a specific gravity of about 0.45 to 0.90. Thereafter, the wooden thin veneer 5 is adhered to the surface of the medium-density fiberboard 4 via an adhesive, and the depth of the surface of the wooden thin veneer 5 cut into the medium-density fiberboard 4. Is formed. In this case, the joint-like groove 6 has a substantially V-shaped cross-section and is arranged in two rows on the surface of the thin wooden veneer 5, and the chamfered portion 8 having a size approximately half the cross-sectional shape of the joint-like groove 6 is provided. The chamfered portions 8 are provided on both side edge portions of the same surface, and are formed by cutting at the same time as the joint-like concave grooves 6. Through these steps, the wood decorative board A is obtained.

Therefore, in the woody decorative board A of the embodiment, the medium-density fiberboard 4 lightened by binding and hardening the hardwood fibers 3 with the resin 2 containing the coloring agent 1 is used.
Is formed, the thin wooden veneer 5 can be adhered to the surface of the medium-density fiberboard 4 without separately performing a pretreatment step for lightening the surface, and the manufacturing process is simplified. Is achieved. Moreover, since the hardwood fiber 3 having a lower swelling ratio than the softwood fiber is employed, it is difficult to absorb moisture, the medium density fiberboard 4 swells, and the thin wood veneer 5 adhered to the surface thereof peels off. It is not. Even if the hardwood fibers 3 themselves are dark, the medium density fiberboard 4 is lightened by the resin 2 containing the colorant 1, so that the same dark color passes through the thin wooden veneer 5. It is prevented from coming out, and a good appearance can be obtained without affecting the pale color tone of the thin wooden veneer 5.

In the wooden decorative panel A of this embodiment, a deep joint-like groove 6 and a chamfered section 8 penetrating into the medium-density fiberboard 4 are engraved on the surface of the thin wooden veneer 5. While the medium-density fiberboard 4 is lightened by the resin 2 containing the colorant 1 to the inside, the same joint-like concave groove 6 and chamfering can be obtained, while the appearance can be expressed with a feeling. The dark color of the hardwood fiber 3 does not appear in the part 8 and the good appearance is not hindered.

In the method for producing a wood decorative board according to this embodiment, the hardwood fiber 3 and the resin 2 are mixed and integrated under pressure to form a medium-density fiberboard 4, and then the surface of the medium-density fiberboard 4 is formed. Manufacturing process of attaching a thin wooden veneer 5 to the
Thereafter, the woody veneer is subjected to a cutting process to form a joint-like concave groove 6 and a chamfered portion 8 having a depth penetrating into the medium density fiberboard 4 by cutting the surface of the thin wooden veneer 5. A can be easily obtained.

[0022]

As described above, in the wood decorative board according to the first aspect of the present invention, since hardwood fibers are employed,
Since the medium-density fiberboard does not swell, the thin wooden veneer attached to the surface does not peel off, and the medium-density fiberboard is lightened by the resin containing the coloring agent, The dark color of the hardwood fiber is prevented from being transmitted through the thin wooden veneer, and a good appearance can be obtained, and the manufacturing process can be simplified.

In the wooden decorative board according to the second aspect of the present invention, the medium-density fiberboard is particularly capable of exhibiting a three-dimensional appearance by the deep joint-like concave grooves. Since the inside is lightened, the hardwood fiber does not appear dark even in the same-groove-like groove, and the good appearance is not hindered.

According to a third aspect of the present invention, in the method for producing a decorative wood board, the hardwood fiber and the resin are mixed and integrated under pressure to form a medium-density fiberboard. In the manufacturing process of attaching a thin wooden veneer to a veneer, it is possible to easily obtain a wooden decorative board having the same operation and effect as described in the first aspect.

In the method for manufacturing a decorative wooden board according to claim 4 of the present invention, in particular, after the method for manufacturing a decorative wooden board according to claim 3, the surface of the thin wooden veneer is subjected to cutting. By forming the joint-like concave groove having a depth that penetrates into the high-density fiberboard, it is possible to easily obtain a decorative wooden board having the same effect as that of the second aspect.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a wooden decorative board according to an embodiment of the present invention.

FIG. 2 is a process chart showing a schematic flow of a method for manufacturing a decorative wooden board according to the embodiment.

FIG. 3 is a cross-sectional view showing a conventional wooden decorative board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Colorant 2 Resin 3 Hardwood fiber 4 Medium density fiberboard 5 Thin wood veneer 6 Joint-like groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Kanai 135 Bldg., Ikugami-cho, Numata-shi, Gunma F-term (reference) 2B002 AA05 AA06 BA01 BA05 BA14 BB02 BB04 BB06 2B260 AA11 BA01 BA15 CB04 DC20 EA05 EB02 EB06 EB11 EB18 EB19 EB21 2E110 AA27 AA57 BA02 BA12 BB33 EA09 GA33W GA33X GA42X GB62W GB62X 4F100 AK01A AP01B AP03A BA02 CA13A DD05 EH012 EJ171 EJ303 HB00A JL10A

Claims (4)

[Claims] 1. A medium-density fiberboard is formed by binding and hardening hardwood fibers with a resin containing a colorant for lightening, and a thin wood veneer is adhered to the surface of the medium-density fiberboard. Wooden veneer. 2. The wood decorative board according to claim 1, wherein a joint-like concave groove having a depth penetrating into the medium density fiberboard is formed on the surface of the thin wooden veneer. 3. A mixture of hardwood fibers and a resin containing a colorant for lightening, press-integration to form a medium-density fiberboard, and thereafter, a thin wood veneer on the surface of the medium-density fiberboard. A method for manufacturing a decorative wooden board. 4. After attaching a thin wooden veneer to the surface of a medium density fiberboard, the surface of the thin wooden veneer is subjected to a cutting process to form a joint-like groove having a depth penetrating into the medium density fiberboard. The method according to claim 3, wherein the decorative board is formed.