Method for forming flat laminated wood

Abstract

Provided are a flat laminated wood material obtained by gathering a large number of end materials having irregular shapes and different sizes generated during cutting of lumber and joining them together, and a molding method therefor. 【Means for solving the problem】 A second synthetic wood piece P(1-4) composed of a total of four wood pieces P1 to P4 is created by joining a first synthetic wood piece obtained by joining two wood pieces P1 and P2 and a first synthetic wood piece obtained by joining two wood pieces P3 and P4 in a square shape, and the second synthetic wood piece P(1-4) and another second synthetic wood piece P(5-8) created in the same manner are joined. Thereafter, a first synthetic wood piece P910 and a first synthetic wood piece P2122 are sequentially joined to form a semi-finished flat laminated wood material A1'.

Description

Technical Field

[0001] The present invention relates to a [product name] formed by gathering and joining a large number of wood pieces made of the end materials of various types of irregularly shaped lumber with the same plate thickness. Forming method of flat glued laminated timber It relates to this.

Background Art

[0002] Existing mosaic work, for example, as shown in Patent Document 1, assembles pieces made of a large number of wood chips or the like by adhesion and forms them into a plate shape or the like. However, the final pattern, design, etc. of the entire mosaic work after assembly and molding are determined before assembly, and each piece constituting the mosaic work is predetermined so as to become the final pattern, design, etc. of the mosaic work. Therefore, the shape, dimensions, surface pattern, etc. and the adhesive surface of each piece are determined in advance. For this reason, each piece constituting the mosaic work is naturally a special product, and it is necessary to manufacture it accurately in terms of dimensions, and it is also necessary to accurately bond each piece.

[0003] In addition, glued laminated timber as a building material is made by bonding plates called laminas with a small cross-sectional dimension in both the longitudinal and transverse directions with an adhesive. Therefore, the longitudinal length, transverse length, and plate thickness of the lamina need to be manufactured accurately, similar to each piece constituting the above-described mosaic work. In particular, since glued laminated timber used as a structural material is required to have a certain strength, the bonding of the lamina needs to be performed by pressure bonding using a dedicated pressure bonding device. Also, when used for interior decoration, furniture manufacturing, etc., among the large number of plates constituting the glued laminated timber, the grain of the part appearing on the outer surface needs to be approximated as much as possible, so it is necessary to carefully select the grain of the lamina. Also, as a special manufacturing method of glued laminated timber, there is a glued laminated timber in which timber scheduled for disposal is finely cut into chips, kneaded into a clay-like state, and pressure-cured. However, the main purpose of this glued laminated timber is the effective use of waste resources, and the beauty of the grain inherent in the timber and the unique texture of the timber cannot be obtained.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 7-32307 [Summary of the Invention] [Problems to be Solved by the Invention]

[0005] The present invention aims to provide a combination of the unique novelty created by the combination of a large number of irregular-shaped end materials themselves and the natural beauty and texture of the wood grain that the wood originally has, by gathering and adhering the irregular-shaped end materials generated during the cutting of lumber. Forming method of flat glued laminated timber This is the problem to be solved. [Means for Solving the Problems]

[0006] The invention according to claim 1 for solving the above problems is a method of forming a laminated wood by gathering a large number of wood pieces composed of various types of irregular-shaped end materials having the same plate thickness and joining them in a flat shape, including a first step of creating a rectangular first synthetic wood piece by cutting off unnecessary protruding portions in a state where two of the wood pieces are joined, and joining the first synthetic wood piece to an intermediate flat laminated wood during the forming process, characterized in that by sequentially increasing the total number of wood pieces joined by repeating the first step, a large number of wood pieces are joined without gaps to form a plate shape.

[0007] Thus, according to the invention of claim 1, a large number of irregularly shaped end materials generated by cutting lumber are used as wood pieces. With two of the wood pieces joined together, unnecessary protruding portions are cut off to create a square-shaped first composite wood piece. By repeating the first step of joining the first composite wood piece to an intermediate flat laminated wood being formed, the total number of wood pieces to be joined is sequentially increased, so that a large number of wood pieces are joined without gaps to form a plate shape and the laminated wood is formed. That is, since each individual wood piece has an irregular shape and moreover different sizes, it is not possible to directly join each individual wood piece one by one to form a flat plate shape. However, by creating an intermediate square-shaped first composite wood piece by joining two wood pieces and sequentially joining the square-shaped first composite wood piece, it becomes possible to form a square-shaped flat laminated wood. The essence of the invention of claim 1 lies in the point of creating the first composite wood piece intermmediately. Also, since end materials are used as wood pieces for each dimension of the first composite wood piece, it is not determined precisely in advance like each dimension of a piece of mosaic work, but is randomly determined by each dimension of the end materials used by chance. Also in the point that each dimension of this wood piece is not determined in advance, one of the features of the invention of claim 1 exists.

[0008] In addition, since the flat laminated wood formed by the invention of claim 1 is a combination of wood pieces with irregular shapes and different sizes, each of the formed individual flat laminated woods is a combination of different wood pieces, so there are no ones with the same appearance. In this regard, it is clearly different from the marquetry with the same appearance by joining a plurality of pieces having a predetermined shape, dimensions, and surface pattern. In this way, in addition to having unique novelty by forming a unique natural design pattern from the combination of each wood piece without a defined dimension itself, in terms of the fact that a large number of different unique wood grains of the individual wood pieces intersect randomly, the synthetic wood grain has uniqueness, and the combination of a plurality of different uniquenesses is eye-catching. In addition, since the individual wood pieces are merely joined together, as the use of the formed flat laminated wood, it is not suitable for structural materials that require high load resistance, and is used for furniture, ornaments, storage boxes, and other display miscellaneous goods that do not have a load acting on them and require interior and design properties. In addition, there is also a supplementary effect that a large number of end materials inevitably generated during the cutting of lumber can be effectively utilized.

[0009] According to the invention of claim 2, in the invention of claim 1, the first synthetic wood piece is created by aligning the reference end faces of two wood pieces in a planar manner, joining the other joining end faces connected to the respective reference end faces, and then cutting off the protruding portion of the other wood piece that protrudes with respect to the opposing end face that is parallel to and faces the reference end face of either one of the wood pieces connected to the joining end face.

[0010] According to the invention of claim 2, since the first synthetic wood piece is created by providing a reference end face, it is easy and reliable to create a rectangular first synthetic wood piece.

[0011] The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, by regarding the first synthetic wood piece or the first synthetic wood piece with the unnecessary protrusion remaining as one wood piece, joining two first synthetic wood pieces, and cutting off the unnecessary protrusion, a rectangular second synthetic wood piece is created with a total of four wood pieces, and a second step of joining the second synthetic wood piece to the intermediate flat laminated wood is included.

[0012] According to the invention of claim 3, by regarding the first synthetic wood piece or the first synthetic wood piece with the unnecessary protrusion remaining as one wood piece, joining two first synthetic wood pieces, and cutting off the unnecessary protrusion, a rectangular second synthetic wood piece is created with a total of four wood pieces. Therefore, the number of times of cutting off the unnecessary protrusion for forming the second synthetic wood piece into a rectangular shape can be reduced, and since a total of four wood pieces are combined into one second synthetic wood piece, the forming efficiency of the flat laminated wood is improved.

[0013] The invention according to claim 4 is characterized in that, in the invention according to claim 1 or 2, by joining the first synthetic wood piece or the first synthetic wood piece with the unnecessary protrusion remaining and a single rectangular wood piece, cutting off the unnecessary protrusion, a rectangular third synthetic wood piece composed of a total of three wood pieces is created, and a third step of joining the third synthetic wood piece to the intermediate flat laminated wood is included.

[0014] Also in the invention according to claim 4, since the third synthetic wood piece is created with a total of three wood pieces, the same operational effects as those of the invention according to claim 3 are achieved.

[0015] The invention according to claim 5 is characterized in that, in the invention according to claim 1 or 2, the first synthetic wood piece includes those formed into a rectangular or approximately rectangular shape by joining non-rectangular wood pieces.

[0016] According to the invention of claim 5, even if the wood piece is non-rectangular such as trapezoidal, rhomboidal, triangular, etc., it is possible to create a rectangular first synthetic wood piece by joining another wood piece.

[0017] The invention according to claim 6 is characterized in that, in the invention according to claim 1 or 2, in the state of a semi-finished flat laminated wood material in which a large number of wood pieces are joined, the protruding part of the wood piece arranged on the outermost side is cut off after joining.

[0018] According to the invention of claim 6, when there is a protruding part on the wood piece arranged on the outermost side of the semi-finished product, without creating the first and second synthetic wood pieces having a square shape, with the protruding part remaining, the final joining is performed on the large number of joined wood pieces, and after the final joining, when aligning the end faces of the flat laminated wood material as the final finished product, it is more efficient in forming to cut off the protruding parts of the wood pieces together.

[0019] The invention according to claim 7 is characterized in that, in the invention according to claim 1 or 2, when joining a large number of wood pieces, two adjacent wood pieces are arranged such that their respective wood grains cross each other.

[0020] According to the invention of claim 7, the large number of wood pieces that constitute a flat laminated wood material formed by joining a large number of wood pieces having irregular shapes and different sizes can be arranged such that the wood grains of two adjacent wood pieces cross each other. The flat laminated wood material thus formed, combined with having a unique appearance in the combination itself of a large number of irregular-shaped wood pieces with no defined dimensions, also has an appearance in which a large number of wood grains existing as many as the number of wood pieces cross each other, forming a unique pattern and being eye-catching.

[0021]

Effect of the Invention

[0022] According to the invention of claim 1, since each individual wood piece has an irregular shape and different sizes, it is not possible to directly join each individual wood piece one by one to form a flat shape. However, by joining two wood pieces and cutting off the unnecessary protruding parts, a square-shaped first synthetic wood piece is created intermediate, and by repeatedly joining the first synthetic wood piece to the intermediate flat laminated wood material during forming, it becomes possible to form a flat laminated wood material.

[0023] In addition, the flat laminated wood formed by the molding method of claim 1 is composed of a combination of wood pieces having an irregular shape and a large number of end materials with different sizes. The combination of each wood piece itself forms a unique natural design pattern, which has unparalleled novelty. In addition, in the point where a large number of different unique wood grains of individual wood pieces intersect randomly, there is uniqueness of synthetic wood grains. The combination of a plurality of different uniquenesses makes it easy to attract people's attention.

Brief Description of the Drawings

[0024]

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Embodiments for Carrying out the Invention

[0025] Hereinafter, the present invention will be described in more detail by giving a plurality of preferred embodiments. Also, each of the wood pieces P1 - P10, P21 - P25 used in Examples 1 and 2 has the same plate thickness and different shapes.

Examples

[0026] As shown in Fig. 1(a), both of the wood pieces P1 and P2 are rectangular. The wood grains of the respective wood pieces P1 and P2 are arranged so as to intersect each other. The reference end faces P1a and P2a of the respective wood pieces P1 and P2 are aligned in a planar manner, connected to the reference end faces P1a and P2a, and the joining end faces P1b and P2b facing each other are joined using an adhesive. In this joined state, the protruding portion P2e of the other wood piece P2 protruding with respect to the opposing end face P1c facing parallel to the reference end face P1a of one wood piece P1 is cut off to create the first composite wood piece P12. The first composite wood piece P12 has a rectangular shape with a short side of the same length as the short side of the wood piece P1 and a long side that is the sum of the long sides of the respective wood pieces P1 and P2.

[0027] In the following, when forming the first composite wood piece from two wood pieces, since the two wood pieces are arranged and joined such that their respective wood grain intersects to form the first composite wood piece, an explanation of the intersection of the wood grain in the arrangement of each wood piece when creating each of the following first composite wood pieces will not be provided.

[0028] As shown in Fig. 1(b), the wood piece P3 is trapezoidal with one leg side perpendicular to a set of parallel opposite sides, and the wood piece P4 is rectangular. When the joining end face P3b, which is a leg side that intersects the set of opposite sides of the trapezoidal wood piece P3 at a non-right angle, is brought into close contact with the central part of the joining end face P4b of one long side of the wood piece P4 and joined, the rectangular wood piece P4 extends from both ends of the joining end face P3b of the trapezoidal wood piece P3 onto the extension plane of the joining end face P3b. In this state, with the end face of the longer side of the trapezoidal wood piece P3 as the reference end face P3a, the protruding part P4e of the rectangular wood piece P4 protruding with respect to the reference end face P3a is cut off to create the reference end face P4a of the wood piece P4. Thereafter, with the opposing end face P3c of the wood piece P3 as the reference, another protruding part P4f of the wood piece P4 is cut off, and a trapezoidal first composite wood piece P34 approximated to a rectangular shape is created.

[0029] The process of forming the first composite wood pieces P12, P34, P56, P78, P910, and P2122 from the two wood pieces described above is the "first step" defined in claim 1.

[0030] Next, as shown in FIG. 2, align the reference end face P12a on one short side of the rectangular first synthetic wood piece P12 and the reference end face P34a on the side of the leg perpendicular to a pair of opposite sides of the trapezoidal first synthetic wood piece P34, connect them to the respective reference end faces P12a and P34a, and bond the opposing joint end faces P12b and P34b to each other with an adhesive. Then, when the protruding portion P4g protruding from the opposing end face P12c of the first synthetic wood piece P12 in the first synthetic wood piece P34 is cut off, a rectangular second synthetic wood piece P(1-4) composed of four wooden pieces P1 to P4 is created.

[0031] Next, through the same process as above, as shown in FIG. 3(a), align the end faces with the reference end faces P5a and P6a on one short side of each of the two vertically long rectangular wooden pieces P5 and P6 with different sizes, and use the joint end faces P5b and P6b on one long side of each. Then, bond the two wooden pieces P5 and P6. When the protruding portion P5e protruding from the opposing end face P6c of the wooden piece P6 in the large-sized wooden piece P5 is cut off, a rectangular first synthetic wood piece P56 is created. Note that the wooden piece P5 is larger in size than the wooden piece P6, and the protruding portion P5e can be used as another wooden piece after being cut off.

[0032] Similarly, as shown in FIG. 3(b), align the end faces with the reference end faces P7a and P8a on one long side of each of the two horizontally long rectangular wooden pieces P7 and P8 with different sizes, and use the joint end faces P7b and P8b on one short side of each. Then, bond the two wooden pieces P7 and P8. When the protruding portion P8e protruding from the opposing end face P7c of the wooden piece P7 in the wooden piece P8 is cut off, a rectangular first synthetic wood piece P78 is created.

[0033] Then, as shown in FIG. 4, the reference end face P56a on one long side of the rectangular first synthetic wood piece P56 and the reference end face P78a on one short side of the rectangular first synthetic wood piece P78 are aligned, and the two first synthetic wood pieces P56 and P78 are joined at the respective joining end faces P56b and P78b. When the protruding portion P8f protruding from the opposing end face of the first synthetic wood piece P56 in the first synthetic wood piece P78 is cut off, a rectangular second synthetic wood piece P(5-8) composed of a total of four wood pieces P5 to P8 is created.

[0034] Then, as shown in FIG. 6(a), when the reference end faces of the two rectangular second synthetic wood pieces P(1-4) and P(5-8) are aligned and joined at the respective joining end faces, an intermediate flat laminated wood A1'' in which a total of eight wood pieces P1 to P8 are joined is created in a state where a step is formed on the side of the opposing end face facing the reference end face. At the time of creating the intermediate flat laminated wood A1'', the creator recognizes that by joining another two first synthetic wood pieces P910 and P2122 to the intermediate flat laminated wood A1'' and aligning the end faces, the finished flat laminated wood A1 is obtained. For this reason, although there are protruding portions P(1-4)e protruding from the opposing end faces P(5-8)c of the other second synthetic wood piece P(5-8) joined integrally with the second synthetic wood piece P(1-4) of the intermediate flat laminated wood A1'', they are left intact without being cut off. The step of creating the two rectangular second synthetic wood pieces P(1-4) and P(5-8) described above is the "second step" defined in claim 3.

[0035] FIG. 5(a) is a wooden piece layout diagram showing the process of joining two vertically rectangular wooden pieces P9 and P10 to form a first composite wooden piece P910. Taking one short side of each of the two vertically rectangular wooden pieces P9 and P10 as the reference end faces P9a and P10a, aligning the end faces, and taking one long side of each as the joining end faces P9b and P10b, joining the two wooden pieces P9 and P10, and cutting off the protruding part P9e protruding from the opposing end face P10c of the wooden piece P10 in the wooden piece P9, a rectangular first composite wooden piece P910 is created.

[0036] FIG. 5(b) is a wooden piece layout diagram showing the process of forming a first composite wooden piece P2122 from two trapezoidal wooden pieces P21 and P22. The two wooden pieces P21 and P22 are both trapezoids of different sizes with one leg perpendicular to a pair of opposite sides, but the crossing angles of the pair of opposite sides of the other inclined leg (hereinafter referred to as the "inclined leg") are different. Therefore, just by closely attaching a specific surface as the joining end face, there is no "reference end face" where each end face connected to each joining end face is planar. Thus, the joining end face P21b of the inclined leg of the smaller-sized wooden piece P21 is closely attached to the central part of the joining end face P22b of the inclined leg of the larger-sized wooden piece P22. After cutting off the protruding part P22e of the wooden piece P22 protruding from the reference end face P21a of the wooden piece P21 to create the reference end face P22a of the wooden piece P22, when cutting off the protruding part P22f of the wooden piece P22 with respect to the opposing end face P21c of the wooden piece P21, a trapezoidal first composite wooden piece P2122 composed of two trapezoidal wooden pieces P21 and P22 is created.

[0037] Next, as shown in FIG. 6(b), using the corner part 1 of the intermediate flat laminated wood A1'', the first composite wooden piece P910 is arranged on the side of the second composite wooden piece P(5 - 8) and integrally joined. Then, the first composite wooden piece P2122 is arranged in the corner part 2 [see FIG. 6(b)] formed by the first composite wooden piece P910 and the second composite wooden piece P(1 - 4) and integrally joined, and a pre-completed flat laminated wood A1' immediately before completion is formed.

[0038] Finally, when performing end face alignment to cut off the protruding portions P910e, P2122e, and P2122f that protrude from each end face of the rectangular flat laminated wood A1, which is the finished product in the almost finished flat laminated wood A1' just before completion, as shown in FIG. 7, a rectangular flat laminated wood A1 is formed in which a total of 12 wooden pieces P1 to P10, P21, and P22 having irregular shapes and different sizes are integrally joined without gaps. Since there are slight irregularities between the wooden pieces on both the front and back surfaces of the flat laminated wood A1, planing is performed as a finishing process. Regarding the first synthetic wooden piece P2122, the protruding portion P22f has been cut off in the previous process, but the protruding portion P22f may be left as it is and cut off together with other protruding portions during the end face alignment of the almost finished flat laminated wood A1' just before completion.

[0039] Since each of the wooden pieces P1 to P10, P21, and P22 constituting the flat laminated wood A1 uses the end materials generated by cutting the lumber, unlike the wooden pieces constituting the mosaic work in which each dimension is accurately determined in advance, the dimensions of each of the individual wooden pieces P1 to P10, P21, and P22 are all accidental dimensions that are not planned. The randomness (randomness) of the dimensions of each of these wooden pieces P1 to P10, P21, and P22, and the fact that most of the wood grains of two adjacent wooden pieces arranged adjacent to each other in each of the wooden pieces P1 to P10, P21, and P22 intersect, and the combination of each wooden piece itself forms a unique natural design pattern, combine with the unprecedented novelty to strongly attract people's attention. As described above, the state in which two adjacent wood grains intersect in each wooden piece can be referred to as "intersecting wood grains."

Example

[0040] The method for forming the flat laminated wood of Example 1 is to pre-form a first synthetic wood piece obtained by joining two wood pieces in a rectangular shape and a second synthetic wood piece obtained by joining two first synthetic wood pieces, and then sequentially join each of the first and second synthetic wood pieces, thereby sequentially increasing the total number of wood pieces to be joined to form the flat laminated wood A1. The method for forming the flat laminated wood of Example 2 is different in that, in addition to the first and second synthetic wood pieces, a single wood piece is joined to the first synthetic wood piece to use a third synthetic wood piece composed of a total of three wood pieces.

[0041] That is, as shown in FIG. 9, the reference end faces P23a and P24a of the two rectangular wood pieces P23 and P24 are aligned in a planar manner and joined at the respective joining end faces P23b and P24b. Then, the protruding portion P23e of the wood piece P23 with respect to the opposing end face P24c of the wood piece P24 is cut off to form a rectangular synthetic wood piece P2324. When the reference end face P2324a of the synthetic wood piece P2324 is aligned with the reference end face P25a of the wood piece P25 and the joining end face P2324b of the synthetic wood piece P2324 is joined to the joining end face P25b of the wood piece P25, a substantially rectangular third synthetic wood piece P(23 - 25) composed of a total of three wood pieces with a protruding portion P25e of the wood piece P25 with respect to the opposing end face P2324c of the synthetic wood piece P2324 is formed. Here, the creator of the flat laminated wood recognizes that the third synthetic wood piece P(23 - 25) is arranged at the corner 1 of the intermediate flat laminated wood A2'', and the protruding portion P25e becomes a protruding portion from the end face of the semi-finished flat laminated wood A2'. Therefore, without cutting off the protruding portion P25e, it is left as it is and arranged at the corner 1 of the two joined second synthetic wood pieces P(1 - 4) and P(5 - 8) and joined integrally. Finally, when the first synthetic wood piece P2122 is arranged and joined at the corner 2 of the intermediate flat laminated wood A2'' during production, the semi-finished flat laminated wood A2' shown in FIG. 10(a) is obtained. The step of arranging and joining the third synthetic wood piece P(23 - 25) at the corner 1 of the intermediate flat laminated wood A2'' during production is the "third step" defined in claim 4.

[0042] Then, when the protruding portions P2122f, P2122g, P(23 - 25)e are cut off from each end face of the semi-finished flat laminated wood A2’, as shown in Fig. 10(b), the flat laminated wood A2 which is a molded product is formed.

[0043] The above-mentioned flat laminated woods A1, A2 are merely examples. By appropriately combining and joining the first to third synthetic wood pieces and a single rectangular wood piece, various flat laminated woods with different combinations of a large number of wood pieces for each molded product can be formed.

[0044] As described above, since the individual wood pieces P1 - P10, P21 - P25 have irregular shapes and different sizes, it is impossible to sequentially join the individual wood pieces one by one to form a flat shape. However, through the above-mentioned steps for two wood pieces, square or approximately square first synthetic wood pieces P12, P34, P56, P78, P910, P2122 are created intermediate, and then these first synthetic wood pieces are joined to create second synthetic wood pieces P(1 - 4), P(5 - 8), or the single rectangular wood piece P25 is joined to the first synthetic wood piece P2324 to create the third synthetic wood piece P(23 - 25). Thus, it becomes possible to create the flat laminated woods A1, A2 from a plurality of wood pieces with irregular shapes and different sizes.

[0045] The flat laminated woods A1, A2 formed through the above steps are combinations of wood pieces composed of a large number of end materials with irregular shapes and different sizes. Therefore, each of the formed flat laminated woods has a different combination of wood pieces, and there are no identical appearances. In this regard, it is clearly different from marquetry products where a plurality of pieces with predetermined shapes, dimensions, and surface patterns are joined to have the same appearance.

[0046] Also, in both of the above Examples 1 and 2, the first to third synthetic wood pieces are joined to form the flat laminated woods A1, A2. However, in relation to the product, in many cases, in order to ensure a rectangular target shape or target dimensions, it may be possible to join a single wood piece to the end.

[0047] The flat laminated wood according to the present invention is applicable to various ornaments and sundries that require interior quality and design. For example, the example shown in FIG. 11 is a kind of ornament K that emits the fragrance of Japanese cypress, which is composed of a box body B made of transparent glass and a lid body D that covers the entire box body B. The lid body D is formed by assembling five flat laminated woods A11 to A13 according to the present invention in a lid shape. The top plate portion 12 made of the flat laminated wood A11 is assembled integrally with the side plate portions 13 and 14 made of the flat laminated woods A12 and A13 (the remaining two are present behind and not shown). Inside the box body B, small pieces 11 of Japanese cypress are accommodated, and the fragrance of Japanese cypress is emitted to the outside through a large number of through holes 15 provided in the top plate portion 12 of the lid body D. Therefore, when the ornament K is installed at the entrance or the like, the entrance is wrapped in the fragrance of Japanese cypress, and a natural feeling can be experienced.

[0048] Each of the flat laminated woods A11 to A13 is formed of square wooden pieces, and is formed by sequentially joining a square second synthetic wood piece formed by joining four square wooden pieces or a square first synthetic wood piece formed by joining two square wooden pieces. The lid body D is accurately formed by performing end face processing on each of the five flat laminated woods A11 to A13 including two not shown in the figure and assembling them into a box shape.

[0049] In addition, since each of the flat laminated woods A11 to A13 constituting the top plate portion 12 and the side plate portions 13 and 14 of the box body B is composed of a large number of wooden pieces, the fragrance of the wood body is also emitted from each wooden piece.

Explanation of Reference Numerals

[0050] A1, A2, A11, A12, A13: Flat laminated wood A1 ’, A2 ’: Semi-finished flat laminated wood A1 '', A2'': Intermediate flat laminated wood P1 to P10, P21 to P25: Wooden pieces P1a to P10a, P21a to P25a: Reference end faces P1b~P10b, P21b ~P25b: Joint end faces P1c, P3c, P6c, P7c, P10c, P21c, P24c: Opposite end faces P2e, P4e, P5e, P8e, P9e, P22e, P910e, P2122e, P(1~4)e, P(23~25)e: Protrusions P4f, P8f, P22f, P2122f: Protrusions P12, P34, P56, P78, P910, P2122: First composite wood piece P(1~4), P(5~8): Second composite wood piece P(23~25): Third composite wood piece 1, 2: Inner corners occurring during the joining of multiple wood pieces

Claims

1. A method for forming a laminated lumber by gathering together a large number of wood pieces made of various kinds of irregularly shaped scraps with the same board thickness and joining them into a flat plate, comprising the steps of: The method includes a first step of cutting off unnecessary protruding portions of the two wood pieces in a joined state to form a square-shaped first composite wood piece, and joining the first composite wood piece to an intermediate flat laminated wood piece in the process of being formed; This method for forming flat laminated lumber is characterized in that the total number of wooden pieces joined by repeating the first step is gradually increased, thereby joining a large number of wooden pieces together without any gaps to form a plate.

2. The method for forming a flat laminated timber as described in claim 1, characterized in that the first synthetic wood piece is created by aligning the reference end faces of two wood pieces in a plane, joining the other joining end faces connected to the reference end faces, and then cutting off a protruding portion of one of the wood pieces that protrudes toward the opposing end face that is parallel to the reference end face of the other wood piece connected to the joining end face.

3. 3. The method for forming a flat laminated timber as described in claim 1 or 2, further comprising a second step of treating the first synthetic wood piece or the first synthetic wood piece with the unnecessary protruding portion remaining as one wood piece, joining two first synthetic wood pieces together, and cutting off the unnecessary protruding portion to create a square-shaped second synthetic wood piece from a total of four wood pieces, and joining the second synthetic wood piece to the intermediate flat laminated timber.

4. 3. The method for forming a flat laminated timber as described in claim 1 or 2, further comprising a third step of joining the first synthetic wood piece or the first synthetic wood piece with the remaining unnecessary protruding portion to a single square wood piece, removing the unnecessary protruding portion to create a square third synthetic wood piece consisting of a total of three wood pieces, and joining the third synthetic wood piece to the intermediate flat laminated timber.

5. 3. The method for forming a flat laminated lumber plate according to claim 1 or 2, wherein the first synthetic wood piece includes a non-rectangular wood piece joined together to form a rectangular or nearly rectangular shape.

6. A method for forming flat laminated timber according to claim 1 or 2, characterized in that in the state of a semi-finished flat laminated timber in which a large number of wooden pieces are joined, the protruding portion of the wooden piece located on the outermost side is cut off after joining.

7. 3. The method for forming flat laminated lumber according to claim 1, wherein when joining multiple wooden pieces, two adjacent wooden pieces are arranged so that the grains of the adjacent wooden pieces intersect with each other.

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