Method for producing a wood-composite board and wood-composite board

Abstract

To provide a method for manufacturing a woody composite board having a short lead time, and the woody composite board.SOLUTION: A method of manufacturing a wood-composite board, the method comprising: attaching a decorative material to at least one surface of a core material; forming a cutout portion by cutting out at least one end portion of the core material to which the decorative material is attached while leaving the decorative material attached to the one surface of the core material; and attaching a facing material to the cutout portion.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a wood composite board, and to a wood composite board. [Background technology]

[0002] Wood composite boards are primarily made up of a core material such as laminated wood, a decorative material such as natural wood veneer or sawn board, and a facing material such as solid wood or sawn board, and are used for tables, shelves, stair treads, kitchen counter tops, etc. By attaching the decorative and facing materials to a relatively inexpensive core material, it is possible to achieve the appearance of solid wood while keeping costs down. Wood composite boards are required in a variety of shapes and sizes depending on the application.

[0003] For example, Patent Document 1 discloses a method for manufacturing a decorative panel, which includes a step of attaching a facing material to the side of a core material and a step of attaching a decorative material to the core material with the facing material attached. Patent Document 2 also discloses a method for manufacturing a flush structure, which includes a step of forming a U-shaped groove in the side of the core material and a step of inserting a facing material into the formed groove. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 04-043484 [Patent Document 2] Patent Publication No. 2021-003818 Summary of the Invention [Problem to be solved by the invention]

[0005] In the invention of Patent Document 1, the first step is to attach a mounting material to the side of the core material, but the dimensions of the mounting material to be attached to the core material cannot be determined until the dimensions and shape of the finished product have been decided. In other words, it is not possible to prepare work in progress in advance, and it takes time to complete the work after receiving an order.

[0006] The invention of Patent Document 2 requires high precision in the processing to form the U-shaped groove. Also, adhesive is usually used to attach the fitting material, but when the fitting material is inserted into the groove, the adhesive inside the groove is scraped off by the fitting material, which causes poor adhesion between the core material and the fitting material.

[0007] Therefore, one object of the present invention is to provide a method for manufacturing a wood composite board with a short lead time, and a wood composite board. [Means for solving the problem]

[0008] The present invention has been made to solve the above-mentioned problems, and is summarized as the following method for manufacturing a wood composite board and a wood composite board.

[0009] (1) a step of attaching a decorative material to at least one surface of a core material; a step of cutting out at least one end of the core material to which the decorative material has been attached, leaving the decorative material attached to one surface of the core material, to form a cutout portion; a step of attaching a bonding material to the cutout portion; A method for manufacturing a wood composite board, comprising:

[0010] (2) attaching a first adhesive to at least one end of the core; a step of attaching a decorative material to at least one surface of the core material to which the first adhesive material has been attached; a step of cutting out an end portion of the core material to which the first adhesive material and the decorative material are attached, the end portion to which the first adhesive material is not attached, while leaving the decorative material attached to one surface of the core material, to form a cutout portion; A step of attaching a second adhesive material to the cutout portion; A method for manufacturing a wood composite board, comprising:

[0011] (3) The method for manufacturing a wood composite board according to (2) above, wherein the step of forming the cutout portion involves cutting out the decorative material attached to one side of the core material at the end opposite the end to which the first adhesive material is attached, leaving the decorative material attached to one side of the core material.

[0012] (4) A method for producing a wood composite board according to any one of (1) to (3) above, wherein the step of attaching a decorative material includes attaching a decorative material to both sides of the board.

[0013] (5) a core material; a first decorative material attached to one surface of the core material; a second decorative material attached to the other surface of the core material; and a bonding material attached to at least one end of the core material, The facing material has a portion whose upper surface is covered with the first decorative material and whose lower surface is exposed, in the wood composite board.

[0014] (6) The wood composite board of (5) above, wherein the back surface of the facing material and the back surface of the second decorative material are flush with each other.

[0015] (7) a core material; a first decorative material attached to one surface of the core material; a second decorative material attached to the other surface of the core material; a first adhesive material and a second adhesive material attached to two end portions located on opposite sides of the core material; the first decorative material has a portion on its upper surface covered by the first decorative material and a portion on its lower surface covered by the second decorative material; The second decorative material has a portion on its upper surface that is covered by the first decorative material, and its lower surface is exposed, in the wood composite board.

[0016] (8) The wood composite board of (7) above, wherein the back surface of the second facing material and the back surface of the second decorative material are flush with each other. [Effects of the Invention]

[0017] According to the present invention, a method for manufacturing a wood composite board with a short lead time and a wood composite board can be obtained. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram showing a wood composite board according to a first embodiment. [Figure 2] FIG. 2 is a schematic diagram showing the state after step 1-1 of the manufacturing method for the wood composite board according to the first embodiment. [Figure 3] FIG. 3 is a schematic diagram showing the state after step 1-2 of the manufacturing method for the wood composite board according to the first embodiment. [Figure 4] FIG. 4 is a schematic diagram showing the state after step 1-3 of the manufacturing method for the wood composite board according to the first embodiment. [Figure 5] FIG. 5 is a schematic diagram showing the state after step 2-1 of the method for producing a wood composite board according to the second embodiment. [Figure 6] FIG. 6 is a schematic diagram showing the state after step 2-2 of the method for producing a wood composite board according to the second embodiment. [Figure 7] FIG. 7 is a schematic diagram showing the state after step 2-3 of the method for producing a wood composite board according to the second embodiment. [Figure 8] FIG. 8 is a schematic diagram showing a wood composite board according to the second embodiment. [Figure 9] FIG. 9 is a schematic diagram showing the state after step 3-2 of the manufacturing method for a wood composite board according to another embodiment. [Figure 10] FIG. 10 is a schematic diagram showing the state after step 3-3 of the manufacturing method of the wood composite board according to another embodiment. [Figure 11] FIG. 11 is a schematic diagram showing the state after step 3-4 of the manufacturing method for a wood composite board according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] [Wood composite board according to the first embodiment] First, a wood composite board according to this embodiment will be described. Fig. 1 is a schematic diagram showing a wood composite board 1 according to the first embodiment. The wood composite board 1 comprises a core material 10, a decorative material 20, a cutout portion 30, and a facing material 40. Hereinafter, in the wood composite board 1, core material 10, decorative material 20, and facing material 40, the surface on the Z1 side in the drawing will be referred to as the "front surface," and the surface on the Z2 side will be referred to as the "back surface."

[0020] In this embodiment, the core material 10 is a rectangular parallelepiped plate material. The dimensions and shape of the core material 10 are not particularly limited. For example, when the core material is a rectangular parallelepiped, the typical dimensions are 500 to 3,000 mm in length, 50 to 1,000 mm in width, and 10 to 40 mm in thickness. The material of the core material 10 is not particularly limited, and existing materials such as laminated wood, wood, wood board, gypsum board, and resin board can be used. The material of the core material 10 preferably has a lower density than the material of the decorative material 20. Lightening the overall weight of the wood composite board 1 reduces transportation costs and makes it easier to handle during installation. The core material 10 does not need to be a single board; it may be made of multiple materials bonded together.

[0021] In this embodiment, the decorative material 20 is a rectangular parallelepiped board. The material for the decorative material 20 is not particularly limited, and existing materials can be used, such as natural wood planks, veneers, fiberboards, or other substrates with veneers attached. The decorative material 20 may also be made of multiple layers of planks or veneers. The thickness of the decorative material 20 is not particularly limited, but if it is too thin, it is prone to breakage during the manufacturing process. Therefore, the thickness of the decorative material 20 is preferably 0.5 mm or more, and more preferably 1.5 mm or more. If the decorative material 20 is too thick, it will increase costs and weight, so the thickness of the decorative material is preferably 3.0 mm or less.

[0022] In the wood composite board 1 according to this embodiment, decorative materials 20 are attached to both the front and back surfaces of the core material 10. Hereinafter, the decorative material 20 attached to the front surface of the core material 10 will be referred to as the first decorative material 22, and the decorative material 20 attached to the back surface of the core material 10 will be referred to as the second decorative material 24. Note that the wood composite board 1 need only have at least the first decorative material 22, and may not have the second decorative material 24. Furthermore, multiple sheets of the first decorative material 22 and the second decorative material 24 may each be attached to the core material 10 in layers.

[0023] The materials for the first decorative material 22 and the second decorative material 24 are preferably the same species of wood, but may be different species of wood. Furthermore, when the first decorative material 22 and the second decorative material 24 are different species of wood, the species of wood are preferably similar in color, but may be different in color.

[0024] The second decorative material 24 may be made of a material with an inferior appearance than the first decorative material 22. For example, if the wood composite board 1 is used as a table top, the manufacturing cost can be reduced by using a material with an excellent appearance for the first decorative material 22 and a material with an inferior appearance for the second decorative material 24, which is less visible to the user. Note that the material with an inferior appearance may be, for example, one with many cracks, knots, and discoloration.

[0025] The cutout portion 30 is a portion cut out at at least one of the ends of the wood composite board 1, leaving the first decorative material 22. In this embodiment, as shown in FIG. 1 , the cutout portion 30 is provided at the end on the X1 side of the wood composite board 1, but the position and number of the cutout portions 30 are not limited. The shape of the cutout portion 30 is not limited, and it may be formed in a rectangular parallelepiped shape, or may be formed in a stepped or sloping shape, etc. In the cutout portion 30, the core material 10 may remain on the back surface side of the first decorative material 22.

[0026] The facing material 40 is accommodated in the cutout portion 30 and attached within the cutout portion 30. The facing material 40 is attached within the cutout portion 30, which is defined by the back surface of the first decorative material 22, the side surface of the core material 10, and the side surface of the second decorative material 24. As a result, a portion of the upper surface of the facing material 40 is covered by the first decorative material 22. For example, if the outer edge of the wood board 1 is a vertical surface, the entire upper surface of the facing material 40 will be covered by the first decorative material 22. On the other hand, if the outer edge has a slope that narrows toward the top, a portion of the upper surface of the facing material 40 will be covered by the first decorative material 22. In other words, it is preferable that the upper surface of the facing material 40 has at least a portion covered by the first decorative material 22 so that the core material 10 is not visible from above. The material of the facing material 40 is not particularly limited, and existing materials such as solid wood can be used. The thickness of the facing material 40 is not particularly limited, but is preferably the sum of the thicknesses of the core material 10 and the second decorative material 24. By making the back surface of the second decorative material 24 and the back surface of the facing material 40 flush with each other, the side surface of the second decorative material 24 is not exposed, resulting in an appearance closer to that of solid wood. Note that if the wood composite board 1 does not have the second decorative material 24, the thickness of the facing material 40 is preferably about the same as that of the core material 10.

[0027] The length of the facing material 40 is preferably such that the end of the core material 10 to which the facing material 40 is attached is not exposed. The facing material 40 may also be a combination of multiple facing materials 40 joined together using butt joints, scarf joints, or the like.

[0028] The material for the facing material 40 is preferably the same tree species as the decorative material 20, but may be a different tree species from the decorative material 20. If the tree species is different from the decorative material 20, it is preferable that the color and grain are similar. By using the same tree species or tree species with similar color and grain for the materials for the facing material 40 and the decorative material 20, an appearance closer to that of solid wood can be achieved.

[0029] When the facing material 40 is attached to a side surface that extends in the fiber direction of the decorative material, it is preferable that the facing material 40 be long so that its longitudinal direction is the fiber direction. Also, when the facing material 40 is attached to a side surface that extends in a direction perpendicular to the fiber direction of the decorative material, it is preferable that the facing material 40 be attached so that the butt end surface is exposed.

[0030] The means for attaching the core material 10, the decorative material 20, and the attachment material 40 is not particularly limited. For example, they may be attached using an existing adhesive.

[0031] [Method of manufacturing a wood composite board according to the first embodiment] Next, a method for manufacturing a wood composite board 1 according to this embodiment will be described with reference to Figures 2 to 4. Figure 2 is a schematic diagram showing the state after step 1-1 of the method for manufacturing a wood composite board 1 according to the first embodiment. Figure 3 is a schematic diagram showing the state after step 1-2 of the method for manufacturing a wood composite board 1 according to the first embodiment. Figure 4 is a schematic diagram showing the state after step 1-3 of the method for manufacturing a wood composite board 1 according to the first embodiment.

[0032] (Step 1-1: Decorative material application process) The manufacturing method of the wood composite board 1 according to the first embodiment first includes a step of attaching a decorative material 20 to a core material 10, as shown in FIG. 2 . In the first embodiment, a first decorative material 22 is attached to the front surface of the core material 10 and a second decorative material 24 is attached to the back surface. However, the decorative material 20 may be attached to at least one of the front and back surfaces of the core material 10. For example, only the first decorative material 22 may be attached to the core material 10. The first decorative material 22 and the second decorative material 24 are preferably made of the same tree species, but different tree species may also be used. When different tree species are used for the first decorative material 22 and the second decorative material 24, tree species of similar colors are preferably used, but tree species of different colors may also be used. Using the same tree species or tree species with similar colors and grains for the first decorative material 22 and the second decorative material 24 results in an appearance closer to that of solid wood.

[0033] The method of attaching the decorative material 20 to the core material 10 is not particularly limited, and existing techniques can be used. For example, the decorative material 20 can be attached to the core material 10 by applying an adhesive, overlapping the core material 10 and the decorative material 20, and pressing them together. The adhesive may be applied to the core material 10, the decorative material 20, or both the core material 10 and the decorative material 20. Existing adhesives such as vinyl acetate, aqueous vinyl urethane, melamine resin, and SBR can be used. The first decorative material 22 and the second decorative material 24 may be attached simultaneously, or the second decorative material 24 may be attached first and then the first decorative material 22, or the first decorative material 22 may be attached first and then the second decorative material 24.

[0034] (Step 1-2: Cutting process) Next, the manufacturing method for the wood composite board 1 according to the first embodiment includes a step of cutting out at least one end of the core material 10 to which the decorative material 20 has been attached, leaving the first decorative material 22, to form a cutout portion 30, as shown in Fig. 3. In the first embodiment, as shown in Fig. 3, the cutout portion 30 is formed at the end on the X1 side of the core material 10 to which the decorative material 20 has been attached, but the position and number of the cutout portions 30 are not limited, and the cutout portion 30 can be formed at any end.

[0035] When forming the cutout portion 30, it is preferable to cut out from the back surface of the core material 10 to which the decorative material 20 is attached to the boundary between the first decorative material 22 and the core material 10. Furthermore, when forming the cutout portion 30, it is also possible to cut out a portion of the back surface of the first decorative material 22 beyond the boundary between the first decorative material 22 and the core material 10. Furthermore, a portion of the core material 10 may remain on the back surface of the first decorative material 22. If a thick portion of the core material 10 remains, the cross section of the core material will be exposed between the decorative material and the facing material, which will impair the natural appearance of the finished product. Therefore, it is preferable that the thickness of the core material 10 remaining on the back surface of the first decorative material 22 be 2 mm or less. Furthermore, to achieve an excellent appearance, it is more preferable that the thickness of the core material 10 remaining on the back surface of the first decorative material 22 be 1.0 mm or less, and even more preferably 0.5 mm or less.

[0036] The cutout 30 may be formed in a rectangular parallelepiped shape, as shown in Figure 3, or may be formed in a stepped or sloped shape, for example. When grooves are formed in the side surfaces of the core material 10 as in Patent Document 2, cutting tools can only be inserted from the side during processing, limiting the types of processing machines that can be used. On the other hand, the manufacturing method of the wood composite board 1 according to the first embodiment shapes the cutout 30 so that it cuts out the decorative material 20 attached to one side of the core material 10, leaving it intact, allowing processing to be performed from the side and back sides of the core material 10 using cutting tools such as a router or saw.

[0037] (Step 1-3: Adhesive pasting process) Next, as shown in FIG. 4 , the manufacturing method of the wood composite board 1 according to the first embodiment includes a step of attaching a facing material 40 to the cutout 30. The means for attaching the facing material 40 is not particularly limited. For example, the facing material 40 can be attached to the cutout 30 by applying an adhesive and then pressing the facing material 40 into the cutout 30. The adhesive may be applied to the side of the core material 10 facing the cutout 30 and the back surface of the first decorative material 22, or it may be applied to the facing material 40, or both. Existing adhesives such as vinyl acetate, aqueous vinyl urethane, melamine resin, and SBR can be used.

[0038] After the bonding material 40 is attached to the cutout portion 30, if necessary, a sander, grinder, or the like may be used to adjust the back surface of the second decorative material 24 and the back surface of the bonding material 40 so that they are positioned on the same plane. Also, the end portion to which the bonding material 40 is attached may be machined into any shape by cutting the first decorative material 22 and the bonding material 40 to such an extent that the core material 10 is not exposed.

[0039] Furthermore, the core material 10, the first decorative material 22, the second decorative material 24, and the facing material 40 may be painted as needed. The type of paint is not particularly limited, and may be a water-based paint or a solvent-based paint. Coloring may be performed using a coloring agent before painting with paint, or coloring may be performed using paint containing a pigment.

[0040] According to the manufacturing method of the wood composite board 1 including the above steps 1-1 to 1-3, the lead time for manufacturing the wood composite board 1 can be shortened.

[0041] As mentioned above, in the invention described in Patent Document 1, production cannot begin until the dimensions and shape have been determined. However, in the manufacturing method of the wood composite board 1 according to the first embodiment, work can proceed up to step 1-1 before the dimensions and shape of the customer's order are determined. For example, by attaching the decorative material 20 to a core material 10 that is larger than the dimensions normally expected for orders, and then cutting the core material 10 with the decorative material 20 attached to the required dimensions after receiving an order, the lead time can be shortened.

[0042] [Wood composite board according to the second embodiment] 8 is a schematic diagram of a wood composite board according to a second embodiment. The wood composite board according to the second embodiment is similar to the wood board 1 according to the first embodiment in that it includes a core material (not shown, see reference numeral 10 in FIG. 1), a decorative material 20, a cutout portion 30, and a facing material (second facing material) 52. However, the wood composite board according to the second embodiment differs from the wood board 1 according to the first embodiment in that it includes a first facing material 50 having a portion of its upper surface covered with a first decorative material 22 and a portion of its lower surface covered with a second decorative material 24. This is because, as will be explained later, lead time can be shortened by preparing a work in progress in which the first facing material 50 is attached to the core material before attaching the decorative material 20 to the core material 10.

[0043] [Method of manufacturing a wood composite board according to the second embodiment] Next, we will explain the manufacturing method of the wood composite board 1 according to the second embodiment. The manufacturing method of the wood composite board 1 according to the second embodiment differs from the manufacturing method of the wood composite board 1 according to the first embodiment in that the first adhesive material 50 is attached to the core material 10 before the decorative material 20 is attached to the core material 10.

[0044] A method for manufacturing a wood composite board 1 according to the second embodiment will be described below with reference to Figures 5 to 8. Figure 5 is a schematic diagram showing the state after step 2-1 of the method for manufacturing a wood composite board 1 according to the second embodiment. Figure 6 is a schematic diagram showing the state after step 2-2 of the method for manufacturing a wood composite board 1 according to the second embodiment. Figure 7 is a schematic diagram showing the state after step 2-3 of the method for manufacturing a wood composite board 1 according to the second embodiment. Figure 8 is a schematic diagram of a wood composite board 1 according to the second embodiment, and also a schematic diagram showing the state after step 2-4.

[0045] (Step 2-1: First adhesive pasting step) First, as shown in FIG. 5 , the manufacturing method of the wood composite board 1 according to the second embodiment includes a step of attaching a first adhesive member 50 to an end of the core material 10. For example, in this embodiment, the first adhesive member 50 is attached to the end of the core material 10 on the Y1 side. When the core material 10 is a rectangular parallelepiped, the first adhesive member 50 can be attached to one end or two adjacent ends of the core material 10. When attaching the first adhesive members 50 to two adjacent ends of the core material 10, the configuration of the corners where the first adhesive members 50 meet is not particularly limited. For example, the ends of the two first adhesive members 50 may be cut at a 45-degree angle and joined, or one of the first adhesive members 50 may be joined. The means for attaching the first adhesive members 50 is not particularly limited, and existing techniques, such as adhesives, may be used.

[0046] After step 2-1, if necessary, the front and back surfaces of the core material 10 to which the first adhesive material 50 has been attached may be ground and smoothed using a processing machine such as a sander, planer, or molder.

[0047] (Step 2-2: Decorative material application process) Next, as shown in Fig. 6, the manufacturing method of the wood composite board 1 according to the second embodiment includes a step of attaching a decorative material 20 to a core material 10 to which a first decorative material 50 has been attached. Note that in this embodiment, a first decorative material 22 is attached to the front surface of the core material 10 to which the first decorative material 50 has been attached, and a second decorative material 24 is attached to the back surface; however, it is sufficient that the decorative material 20 is attached to at least one of the front and back surfaces; for example, only the first decorative material 22 may be attached to the core material 10 to which the first decorative material 50 has been attached. Furthermore, the method of attaching the decorative material 20 to the core material 10 to which the first decorative material 50 has been attached is not limited. For example, an adhesive may be used to attach the decorative material 20 to the core material 10.

[0048] (Step 2-3: Cutting process) Next, as shown in Fig. 7, the manufacturing method of the wood composite board 1 according to the second embodiment includes a step of cutting out the end of the core material 10 to which the decorative material 20 and the first decorative material 50 are attached, at the end where the first decorative material 50 is not attached, while leaving the first decorative material 22, to form the cutout portion 30. Note that in this embodiment, the cutout portion is formed at the end on the X1 side of the core material 10 to which the decorative material 20 and the first decorative material 50 are attached, but the position and number of the cutout portions 30 are not limited, and the cutout portion 30 can be formed at any end. Furthermore, the decorative material 20 that is left when forming the cutout portion 30 is not limited to the first decorative material 22, and the cutout portion 30 may be formed while leaving the second decorative material 24.

[0049] When forming the cutout portion 30, it is preferable to cut out from the back surface of the core material 10 to the boundary between the first decorative material 22 and the core material 10. In this case, a portion of the first decorative material 22 may be cut out beyond the boundary between the first decorative material 22 and the core material 10. Also, a portion of the core material 10 may remain on the Z2 side surface of the first decorative material 22. If the core material 10 and the first decorative material 50 remain thick, the appearance of the finished product will be impaired, so it is preferable that the portion of the core material 10 remaining on the back surface of the first decorative material 22 is thin. Also, the shape of the cutout portion 30 is not limited, and it may be formed in a rectangular parallelepiped shape as shown in FIG. 7, or may be formed in a stepped or sloped shape, for example.

[0050] (Step 2-4: Second adhesive pasting step) Next, as shown in FIG. 8, the manufacturing method of the wood composite board 1 according to the second embodiment includes a step of attaching a second adhesive material 52 to the cutout portion 30. The means for attaching the second adhesive material 52 is not particularly limited, and existing techniques such as adhesives may be used. The material for the second adhesive material 52 is preferably the same wood species as the first adhesive material 50, but other wood species may also be used. When using a wood species different from that of the first adhesive material 50, it is preferable to use one with a similar color and grain. Using the same wood species or wood species with a similar color and grain for the materials for the first adhesive material 50 and the second adhesive material 52 will result in an appearance closer to that of solid wood.

[0051] By carrying out the above steps 2-1 to 2-4, a wood composite board 1 can be manufactured with a short lead time.

[0052] In the manufacturing method of the wood composite board 1 according to the second embodiment, work can proceed up to step 2-2 before the dimensions and shape of the customer's order are determined. By preparing a work-in-progress in which the first adhesive material 50 and the decorative material 20 are attached to the core material 10 in advance, and then using or combining work-in-progress items according to the order contents, the process from step 2-3 onwards can be carried out, thereby shortening the lead time after receiving an order.

[0053] Consider the case of a wood composite board 1, such as a table, in which facing materials 40 are attached to all sides of the core material 10. For example, if the length of the opposite sides is determined, it is possible to prepare a work-in-progress product with facing materials 40 attached to the two ends of the core material 10 located on opposite sides, but if the length of the opposite sides is not determined, it is not possible to prepare a work-in-progress product with facing materials 40 attached to the two ends of the core material 10 located on opposite sides. In the latter case, attaching facing materials 40 to both of the two ends located on opposite sides of the core material 10 after the dimensions have been determined would result in a long lead time. In view of the above, it is preferable to attach a first adhesive material 50 to one of the two ends located on opposite sides of the core material 10 before determining the dimensions (step 2-1), attach a decorative material 20 to at least one of the front or back surfaces of the core material 10 to which the first adhesive material 50 has been attached (step 2-2), prepare this as a work in progress, and after determining the dimensions, carry out step 2-3 and attach a second adhesive material 52 to the other end (step 2-4).

[0054] For example, a more specific explanation will be given using the example in the table above. In the case of a wood composite board 1 whose width is fixed but whose length is not, it is possible to attach a first bonding material 50 to one end of the core material 10 in the length direction and two end portions in the width direction (step 2-1), and then attach a decorative material 20 to at least one of the front or back surfaces of the core material 10 to which the first bonding material 50 has been attached (step 2-2), and prepare this as a work in progress. After the length is determined, the length can be adjusted and steps 2-3 and 2-4 can be carried out, thereby shortening the lead time. Furthermore, in the case of a wood composite board 1 whose width and length are not fixed, it is possible to attach a first bonding material 50 to two adjacent sides (step 2-1), and then attach a decorative material 20 to at least one of the front or back surfaces of the core material 10 to which the first bonding material 50 has been attached (step 2-2), and prepare this as a work in progress. After the dimensions are determined, the dimensions can be adjusted and steps 2-3 and 2-4 can be carried out for the remaining two sides, thereby shortening the lead time. Thus, the present invention is particularly useful in cases where it is necessary to attach the attachment material 40 to two ends located on opposite sides of the core material 10, but the length of the opposite sides is not fixed.

[0055] [Other embodiments] The cutout 30 may be formed in a groove shape from the back surface side of the core material 10. Below, a method for manufacturing a wood composite board 1 in which the cutout 30 is formed in a groove shape will be described with reference to Figs. 9 to 11. Fig. 9 is a schematic diagram showing the state after step 3-2 of the method for manufacturing a wood composite board 1 according to another embodiment. Fig. 10 is a schematic diagram showing the state after step 3-3 of the method for manufacturing a wood composite board 1 according to another embodiment. Fig. 11 is a schematic diagram showing the state after step 3-4 of the method for manufacturing a wood composite board 1 according to another embodiment.

[0056] (Step 3-1: Decorative material application process) First, a manufacturing method for a wood composite board 1 according to another embodiment includes a step of attaching a decorative material 20 to a core material 10. The method for attaching the decorative material 20 to the core material 10 may be the same as in step 1-1 or step 2-2 described above. Furthermore, before attaching the decorative material 20 to the core material 10, a first adhesive material 50 may be attached to the core material 10 using the same method as in step 2-1.

[0057] (Step 3-2: Cutting process) Next, in a manufacturing method of a wood composite board 1 according to another embodiment, as shown in FIG. 9 , a groove-shaped notch is cut out from the back side of the core material 10 at the end of the core material 10 to which the decorative material 20 has been attached, leaving the decorative material 20 attached to one side of the core material 10. When forming the notch 30 in a groove shape, it is preferable that the notch 30 have a shape that narrows toward the front side of the core material 10. This shape of the notch 30 prevents the adhesive from being scraped off when attaching the facing material 40 to the notch 30. Furthermore, to minimize material loss in step 3-4 described below, it is preferable to form the notch 30 as close to the end of the core material 10 as possible.

[0058] (Step 3-3: Adhesive pasting process) Next, a manufacturing method of a wood composite board 1 according to another embodiment includes a step of attaching a facing material 40 to the cutout 30, as shown in Figure 10. The facing material 40 may be smaller than the cutout 30. For example, after attaching a facing material 40 smaller than the cutout 30 to the cutout 30, the gap between the cutout 30 and the facing material 40 can be filled with a wedge. It is preferable to use the same material for the wedge as the facing material 40.

[0059] (Process 3-4: Unnecessary part cutting process) Next, as shown in Fig. 11, the core material 10, the decorative material 20, and a portion of the facing material 40 are cut so as to expose the longitudinal side portion of the facing material 40. The shape of the cut is not particularly limited, and the cut may be in a straight line as shown in Fig. 11, or may be in a curved line, for example.

[0060] By carrying out the above steps 3-1 to 3-4, a wood composite board 1 can be manufactured with a short lead time. [Industrial Applicability]

[0061] According to the present invention, a method for manufacturing a wood composite board with a short lead time and a wood composite board can be obtained. [Explanation of symbols]

[0062] 1. Wood composite board 10 Core material 20 Cosmetic materials 22 Daiichi Cosmetic Materials 24 Secondary Decorative Material 30 Cutout 40 Spotting material 50 First appearance materials 52 Second facing material

Claims

1. A step of attaching a decorative material to at least one surface of the core material; a step of cutting out at least one end of the core material to which the decorative material has been attached, leaving the decorative material attached to one surface of the core material, to form a cutout portion; a step of attaching a bonding material to the cutout portion; A method for manufacturing a wood composite board, comprising:

2. attaching a first adhesive to at least one end of the core; a step of attaching a decorative material to at least one surface of the core material to which the first adhesive material has been attached; a step of cutting out at least one end of the core material to which the first adhesive material and the decorative material are attached, the end to which the first adhesive material is not attached, while leaving the decorative material attached to one surface of the core material, to form a cutout portion; A step of attaching a second adhesive material to the cutout portion; A method for manufacturing a wood composite board, comprising:

3. 3. The method for manufacturing a wood composite board according to claim 2, wherein the step of forming the cutout portion comprises cutting out the decorative material attached to one side of the core material at an end opposite to the end where the first adhesive material is attached, while leaving the decorative material attached to one side of the core material.

4. The process of applying the decorative material involves applying the decorative material to both sides. A method for producing the wood composite board according to any one of claims 1 to 3.

5. A core material and a first decorative material attached to one surface of the core material; a second decorative material attached to the other surface of the core material; and a bonding material attached to at least one end of the core material, The facing material has a portion whose upper surface is covered with the first decorative material and whose lower surface is exposed, in the wood composite board.

6. The wood composite board according to claim 5 , wherein the back surface of the facing material and the back surface of the second decorative material are flush with each other.

7. A core material and a first decorative material attached to one surface of the core material; a second decorative material attached to the other surface of the core material; a first adhesive material and a second adhesive material attached to two end portions located on opposite sides of the core material; the first decorative material has a portion on its upper surface covered by the first decorative material and a portion on its lower surface covered by the second decorative material; The second decorative material has a portion on its upper surface that is covered by the first decorative material, and its lower surface is exposed, in the wood composite board.

8. The wood composite board according to claim 7 , wherein the back surface of the second bonding material and the back surface of the second decorative material are flush with each other.

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