Composites and Furniture

Abstract

To provide a composite material and furniture that can be made lighter and have improved durability. [Solution] The composite material 1 comprises a core material 2 made of a wood material with a density lower than that of a medium-density wood fiberboard, a surface material 3 made of a medium-density wood fiberboard and provided on one side of the core material 2, and an end wood material 4 provided to cover the side of the core material 2 and the side of the surface material 3, the thickness of the end wood material 4 being the same as, thicker than or thinner than the thickness of the surface material 3, the surface material 3 being made of a medium-density wood fiberboard containing colored wood fibers, and the end wood material 4 being made of natural wood such as cypress.

Description

[Technical Field]

[0001] The present invention relates to composite materials and furniture. [Background technology]

[0002] Melamine decorative panels are commonly used as the surface decorative material for the tops of furniture, such as tables and shelves. For example, Patent Document 1 listed below discloses a technique relating to a furniture top in which a melamine decorative panel is attached to the upper surface of a core material and a colored plywood is attached to the lower surface of the core material, and Patent Document 2 listed below discloses a technique relating to a board in which a melamine resin layer is formed on the front and back surfaces of an MDF board.

[0003] Furthermore, some composite materials having a core material and a surface material use natural wood for the surface material instead of melamine decorative board. The composite material disclosed in Patent Document 3 below uses a plate-shaped member with wood grain as the surface material, and the shelf board disclosed in Patent Document 4 uses natural wood for the surface and end grain. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 5-13246 [Patent Document 2] Patent Publication No. 2021-88062 [Patent Document 3] Patent Publication No. 2021-75020 [Patent Document 4] Japanese Utility Model Application Publication No. 2-56603 Summary of the Invention [Problem to be solved by the invention]

[0005] In composite materials, medium-density fiberboard (MDF) is generally used as the core material. MDF is also sometimes used as a single board (a single board) for furniture tops and shelves.

[0006] However, since MDF is made by thermocompression molding using wood fibers such as wood chips as raw materials, it has the disadvantage that corners are easily chipped by external impacts, making it difficult to use as a veneer. Also, the MDF that can be used for furniture has a relatively high density (0.6 g / cm 3 ~0.8g / cm 3 ), and when used as a veneer, the furniture becomes heavy, making it difficult to transport and assemble.

[0007] The present invention has been made in consideration of the above circumstances, and aims to provide a composite material and furniture that can be made lighter and have improved durability. [Means for solving the problem]

[0008] To solve the above problems, the composite material and furniture of the present invention adopt the following measures. In other words, the composite material of the present invention comprises a core material made of a wood material having a density lower than that of a medium-density wood fiberboard, a surface material made of a medium-density wood fiberboard and provided on one side of the core material, and a wood end material provided to cover the side of the core material and the side of the surface material.

[0009] According to this configuration, the composite material comprises a core material, a surface material, and an end grain material, with the core material being made of a wood material with a density lower than that of medium-density wood fiberboard (MDF), and the surface material provided on one side of the core material being made of medium-density wood fiberboard (MDF). Because the core material has a lower density than the surface material, the composite material is lighter than a single board (a board) made entirely of medium-density wood fiberboard. In addition, end grain material is provided to cover the sides of the core material and the side surfaces of the surface material. This makes the surface material made of medium-density wood fiberboard less likely to chip due to external impacts, etc. Therefore, the composite material can be used as a board material with reduced weight and improved durability.

[0010] In the above device, the thickness of the end grain material may be the same as, thicker than, or thinner than the thickness of the surface material.

[0011] In the above device, the surface material may be made of a medium density wood fiberboard containing colored wood fibers.

[0012] According to this configuration, the texture and unique color of wood fiber can be displayed on the exterior surface without attaching a separate decorative sheet or the like to the surface, thereby enhancing the design.

[0013] In the above device, the butt wood may be made of natural wood.

[0014] With this structure, the end grain material is made of natural wood and is not a fiberboard made from wood fiber that has been thermo-compressed, so the corners are less likely to chip due to external impacts, etc. This improves the durability of the board material.

[0015] In the above device, the core material may have a nut portion for receiving a bolt, formed on a surface opposite to the surface material.

[0016] According to this configuration, for example, a member used as a leg of furniture is fixed to a composite material used as a tabletop by a bolt via a nut portion. The nut portion is formed, for example, by embedding a countersunk nut in a core material.

[0017] The furniture according to the present invention comprises the composite material described above. [Effects of the Invention]

[0018] According to the present invention, it is possible to reduce the weight and improve the durability. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a partially enlarged longitudinal cross-sectional view showing a composite material according to an embodiment of the present invention; [Figure 2] 1 is a perspective view of a composite material according to an embodiment of the present invention, showing the surface material side of the composite material surface; [Figure 3] 1 is a perspective view of a composite material according to an embodiment of the present invention, showing the core material side of the back surface of the composite material; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] A composite material 1 according to an embodiment of the present invention will be described below with reference to the drawings. As shown in Figures 1 to 3, a composite material 1 according to one embodiment of the present invention includes, for example, a core material 2, a surface material 3, and an end grain material 4. The surface material 3 is a medium-density fiberboard (MDF), and the composite material 1 has an exterior appearance that resembles the texture of wood fibers such as wood chips. The composite material 1 is used, for example, for furniture tops and shelves. The furniture includes, for example, tables, shelves, and chairs, and is installed in homes, offices, stores, etc. The dimensions of the composite material 1 are determined, for example, according to the size of the furniture to be manufactured.

[0021] As shown in Figures 1 and 2, a surface material 3 is provided on one side, i.e., the surface side, of the core material 2. The core material 2 is made of a wood material with a lower density than the surface material 3. The core material 2 is, for example, lauan lumber. The lauan lumber is, for example, a falcata laminated lumber core with linden, lauan, etc. attached to both sides of the core material.

[0022] The surface material 3 is a medium-density wood fiberboard (MDF) and is provided on one side of the core material 2. The core material 2 and the surface material 3 are adhered to each other with, for example, an adhesive. This increases the strength and makes the surface material less prone to warping, unlike when the core material 2 and the surface material 3 are each used as a single board.

[0023] The surface material 3 is made of, for example, a medium-density wood fiberboard (colored MDF) containing colored wood fibers. Colored MDF is made by coloring the wood fibers before thermoforming during manufacturing, and then thermoforming the colored wood fibers. By using colored MDF, the texture and unique color of the wood fibers can be expressed on the exterior surface without applying a separate decorative sheet, thereby enhancing the design. Colored MDF comes in blue, green, yellow, red, gray, etc., and has an appearance that is different from general MDF, which has a flesh color or brown color and is molded without coloring the wood fibers, or from materials whose surface is uniformly painted with paint.

[0024] The surface of the surface material 3 is finished by painting with polyurethane or the like, for example, to increase the durability of the surface material 3.

[0025] The thickness of the composite material 1 is, for example, 20 mm, and in this case, the thicknesses of the core material 2 and the surface material 3 are 15 mm and 5 mm, respectively. The thickness ratio of the core material 2 to the surface material 3 is 3:1. Note that in the present invention, the thickness of the composite material 1 etc. is not limited to this example.

[0026] The composite material 1 according to this embodiment is lighter than a single board (single board) made entirely of MDF, since the core material 2 is made of a wood material having a density lower than that of MDF.

[0027] The end grain material 4 is provided so as to cover the side surfaces of the core material 2 and the surface material 3. The end grain material 4, core material 2, and surface material 3 are bonded together with, for example, an adhesive. This protects the surface material 3 made of MDF and makes it less likely to chip due to external impacts, etc.

[0028] The end wood material 4 is made of, for example, natural wood (e.g., cypress, cedar, etc.). In this case, the end wood material 4 is not a fiberboard that is thermocompressed using wood fiber as the raw material, so the end wood material 4 itself is less likely to chip due to external impacts, etc. The end wood material 4 has a board thickness of, for example, about 5 mm to 10 mm. Because the end wood material 4 is relatively small, even when natural wood is used as the end wood material 4, thinned wood can be used, and the composite material 1 can be manufactured as an environmentally friendly product.

[0029] As shown in FIG. 1, the corners on the front and back sides of the butt end material 4 may be formed with tapered surfaces, for example, slopes with an inclination angle of 45°.

[0030] As described above, according to this embodiment, the core material 2 and the surface material 3 are bonded together in close contact with each other, which increases the strength and makes them less susceptible to warping, unlike when they are used as single boards. Furthermore, since the core material 2 has a lower density than the surface material 3, it is possible to use a relatively high density MDF (0.6 g / cm) for the surface material 3. 3 ~0.85g / cm 3 ), the composite material 1 is lighter than a single board (single board) made entirely of medium-density wood fiberboard. As a result, when the composite material 1 is used for the tabletop or shelf of furniture, the furniture can be made lighter, and transportation and assembly become easier.

[0031] When the composite material 1 according to this embodiment is used as a tabletop for furniture, a nut portion 5 for receiving a bolt may be formed on the back side of the composite material 1, i.e., the surface opposite to the surface material 3, as shown in Fig. 3. This allows the member used as the leg of the furniture and the composite material 1 used as the tabletop to be fixed together by the bolt. The nut portion 5 is formed, for example, by embedding a countersunk nut in the core material 2.

[0032] As shown in Figures 1 to 3, end grain materials 4 are provided on the side surfaces of the core material 2 and the surface material 3 so as to cover the side surfaces of the core material 2 and the surface material 3. This makes the surface material 3 made of MDF less likely to chip due to external impacts, etc. Because MDF is made from wood fibers such as wood chips and is thermocompressed, its corners are easily chipped due to external impacts, making it difficult to use as a veneer. However, by making it into a composite material 1 as in this embodiment, the durability of the board can be improved.

[0033] When the surface material 3 is made of a medium-density wood fiberboard (colored MDF) containing colored wood fibers, the texture and unique color of the wood fibers can be expressed on the exterior surface of the composite material 1 without attaching a separate decorative sheet or the like, thereby enhancing the design.

[0034] The end grain material 4 may be natural wood, and in this case, since the end grain material 4 is not a fiberboard that is thermocompressed using wood fiber as a raw material, the corners are less likely to chip even when subjected to an external impact, etc. This improves the durability of the composite material 1 as a board material.

[0035] The materials of the core material 2 and the end grain material 4 are not limited to those in the above-described embodiment, and other materials may be used. The back side of the core material 2, i.e., the side opposite the surface material 3, may be left exposed, or another board material (MDF, etc.), sheet material, etc. may be attached to it. Furthermore, although an example in which the core material 2 and the surface material 3 are directly attached to each other has been described, another board material, sheet material, etc. may be placed between the core material 2 and the surface material 3. [Explanation of symbols]

[0036] 1 Composite material 2 Core material 3 Surface material 4 End grain 5 Nut

Claims

1. a core material made of a wood material having a density lower than that of a medium-density wood fiberboard; A surface material made of a medium-density wood fiberboard provided on one side of the core material; An end grain material provided to cover a side surface of the core material and a side surface of the surface material; A composite material comprising:

2. The composite material according to claim 1 , wherein the thickness of the end grain material is the same as, thicker than, or thinner than the thickness of the surface material.

3. 10. The composite material of claim 1, wherein the facing material comprises a medium density wood fiberboard containing pigmented wood fibers.

4. 2. The composite material according to claim 1, wherein the end grain material is made of natural wood.

5. 2. The composite material according to claim 1, further comprising a nut portion for receiving a bolt, formed on a surface of the core material opposite to the surface material.

6. Furniture comprising a composite material according to any one of claims 1 to 5.

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