Method of forming flat laminated lumber

Abstract

To provide a flat plate-like laminated lumber formed by gathering and joining a large number of odd materials having irregular shapes and different sizes generated at a time of the cutting of timber and a method for molding the same.SOLUTION: A first synthetic wood piece formed by joining two wood pieces P1, P2 and a first synthetic wood piece formed by joining two wood pieces P3, P4 are joined in a square shape to form a second synthetic wood piece P (1-4) composed of four wood pieces P1 to P4 in total, and the second synthetic wood piece P (1-4) and another second synthetic wood piece P (5-8) formed in the same manner are joined. Thereafter, the first synthetic wood piece P910 and the second synthetic wood piece P2122 are sequentially bonded to each other to form a semi-finished flat laminated wood A1'.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention is a method of joining together a large number of pieces of wood made from various kinds of irregularly shaped lumber scraps of the same thickness. Method for forming flat laminated timber It is related to. [Background technology]

[0002] Existing parquet work, as shown in Patent Document 1, for example, is made by assembling pieces made of many pieces of wood or the like by gluing them together to form a board or the like, but the final design, pattern, etc. of the entire parquet work after assembly and molding is determined before assembly, and each piece that makes up the parquet work is predetermined to form the final design, pattern, etc. of the parquet work, so the shape, dimensions, surface design, etc. of each piece and adhesive surface are determined in advance. For this reason, each piece that makes up the parquet work is naturally a custom-made product, and needs to be produced with accurate dimensions, and the pieces also need to be glued together accurately.

[0003] Furthermore, laminated lumber as a building material is made by gluing together small cross-sectional boards called lamina with adhesive in both the vertical and horizontal directions. Therefore, the length, width, and thickness of the lamina must be precisely manufactured, just like the individual pieces that make up the parquet described above. In particular, laminated lumber used as structural materials requires a certain level of strength, so the lamina must be bonded using a specialized crimping device. Furthermore, when used for interior design, furniture, or other decorative purposes, the grain of the outer surface of the laminated lumber must be as similar as possible to the grain of the numerous boards that make up the lumber, so the grain of the lamina must be carefully selected. Another unique method for producing laminated lumber involves cutting lumber intended for disposal into fine chips, kneading it into a clay-like substance, and then pressurizing and hardening it. However, this method is primarily intended to utilize waste resources, and does not offer the beautiful grain or texture inherent to lumber. [Prior art documents] [Patent documents]

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

[0005] The present invention has a unique novelty created by the combination of a large number of irregular-shaped end materials themselves by gathering and bonding the irregular-shaped end materials generated during the cutting of lumber, and also has the beauty and texture of the wood grain that the lumber originally has. Method for forming flat laminated timber and aims to provide such. [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 irregular-shaped end materials having the same plate thickness and joining them in a flat shape, including a first step of creating a square 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 molding, 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] According to the invention of claim 1, a large number of irregularly shaped scraps resulting from cutting lumber are used as wooden pieces, and two of the wooden pieces are joined together and unnecessary protrusions are removed to create a square-shaped first composite wood piece. This first composite wood piece is then joined to an intermediate flat-shaped laminated lumber in the process of being formed. By repeating this first step, the total number of joined wooden pieces is gradually increased, and a large number of wooden pieces are joined together without gaps to form a plate, thereby forming a laminated lumber. In other words, because the individual wooden pieces are irregularly shaped and of different sizes, they cannot be joined one by one to form a plate, but by joining two wooden pieces to create a square-shaped first composite wood piece as an intermediate, and then joining these square-shaped first composite wood pieces in turn, it is possible to form a square-shaped flat-shaped laminated lumber. The essence of the invention of claim 1 lies in the intermediate step of creating the first composite wood piece. Furthermore, because the dimensions of the first composite wood pieces are made from scrap wood, they are not precisely predetermined like the dimensions of marquetry pieces, but are determined randomly depending on the dimensions of the scrap wood that happens to be used. One of the features of the invention of claim 1 is that the dimensions of these wood pieces are not predetermined.

[0008] Furthermore, the flat-shaped laminated lumber formed according to the invention of claim 1 is an assembly of numerous irregularly shaped and sized wood scraps. Because each individual flat-shaped laminated lumber is a combination of different wood pieces, no two pieces have the same appearance. This clearly distinguishes it from marquetry, which is made by joining multiple pieces with predetermined shapes, dimensions, and surface patterns. The combination of each piece of wood, which has no set dimensions, creates a unique, natural design pattern, giving it unparalleled novelty. Furthermore, the random intersecting of the numerous, unique grain patterns of each individual piece creates a unique, synthetic grain. The combination of these unique grain patterns makes it highly eye-catching. Furthermore, because the individual pieces are simply joined together, the flat-shaped laminated lumber is unsuitable for structural applications requiring high load resistance. Instead, it is used for furniture, ornaments, piggy banks, and other display items requiring interior design and aesthetic appeal without being subject to load. In addition, there is also the additional effect of making effective use of the numerous scraps that are inevitably produced when cutting lumber.

[0009] The invention of claim 2 is characterized in that, in the invention of claim 1, the first composite wood piece is created by aligning the reference end faces of two wood pieces in a plane, joining the other joining end faces that connect to the reference end faces, and then cutting off the 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 that connects to the joining end face.

[0010] According to the invention of claim 2, the first synthetic wood piece is created by providing a reference end face, so that the creation of the square-shaped first synthetic wood piece is easy and reliable.

[0011] The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the first synthetic wood piece or the first synthetic wood piece with the unnecessary protruding portion remaining is considered to be one wood piece, and two first synthetic wood pieces are joined together and the unnecessary protruding portion is removed to create a square-shaped second synthetic wood piece from a total of four wood pieces, and the second synthetic wood piece is joined to the intermediate flat laminated wood.

[0012] According to the invention of claim 3, the first synthetic wood piece or a first synthetic wood piece with an unnecessary protruding portion remaining is considered to be one wood piece, and two first synthetic wood pieces are joined together and the unnecessary protruding portion is removed, thereby creating a square-shaped second synthetic wood piece from a total of four wood pieces.This reduces the number of times that unnecessary protruding portions need to be removed to form the second synthetic wood piece into a square shape, and since a total of four wood pieces are combined into one second synthetic wood piece, the efficiency of forming flat laminated lumber is improved.

[0013] The invention of claim 4 is characterized in that, in the invention of claim 1 or 2, it includes a third step of joining the first composite wood piece or the first composite wood piece with the unnecessary protruding portion remaining to a single square wood piece, removing the unnecessary protruding portion to create a square third composite wood piece consisting of a total of three wood pieces, and joining the third composite wood piece to the intermediate flat laminated wood.

[0014] In the invention of claim 4, the third composite wood piece is made of a total of three wood pieces, so the same effects as those of the invention of claim 3 are achieved.

[0015] The invention of claim 5 is characterized in that, in the invention of claim 1 or 2, the first composite wood piece includes a piece formed by joining non-square wood pieces to form a square or approximately square shape.

[0016] According to the invention of claim 5, even if the wooden piece is non-rectangular, such as trapezoidal, rhombus-shaped, or triangular, it can be joined with another wooden piece to create a rectangular first composite wooden piece.

[0017] The invention of claim 6 is characterized in that in the invention of claim 1 or 2, 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.

[0018] According to the invention of claim 6, if the wooden pieces positioned at the outermost sides of the semi-finished product have protrusions, rather than creating first and second composite wooden pieces with an overall square shape, it is more efficient to leave the protrusions present and finally join them to a number of already joined wooden pieces, and after this final joining, when aligning the edges of the flat laminated timber as the final finished product, to cut off all the protrusions of the wooden pieces at once.

[0019] The invention of claim 7 is characterized in that, in the invention of claim 1 or 2, when joining multiple wooden pieces, two adjacent wooden pieces are arranged so that the grains of their respective pieces intersect with each other.

[0020] According to the invention of claim 7, the flat laminated timber is formed by joining a large number of irregularly shaped wooden pieces of different sizes, and the large number of wooden pieces can be arranged so that the grain of each of two adjacent wooden pieces intersects with each other.In addition to the unique appearance of the flat laminated timber formed in this way due to the combination of a large number of irregularly shaped wooden pieces with no set dimensions, the appearance of the large number of intersecting grains, which exist in the same number as the wooden pieces, also forms a unique pattern and is easy to attract attention.

[0021] [Effects of the Invention]

[0022] According to the invention of claim 1, since the individual wooden pieces are irregularly shaped and of different sizes, it is not possible to directly join the individual wooden pieces one by one to form a flat plate. However, by joining two wooden pieces and removing unnecessary protrusions, a square-shaped first composite wood piece can be created intermediately, and this first composite wood piece can be repeatedly joined to intermediate flat laminated lumber that is in the process of being formed, thereby making it possible to form flat laminated lumber.

[0023] Furthermore, the flat laminated lumber formed by the forming method of claim 1 is an assembly of wooden pieces made of numerous irregularly shaped scraps of different sizes, and the assembly of each wooden piece itself forms a unique natural design pattern, giving it unparalleled originality.In addition, the numerous different and unique wood grains of each wooden piece randomly intersect, giving it the uniqueness of a synthetic wood grain, and the combination of multiple different unique characteristics makes it easy to attract attention. [Brief explanation of the drawings]

[0024] [Figure 1] (a) is a wood piece arrangement diagram showing the process of forming the first composite wood piece P12 using two wood pieces P1 and P2, and (b) is a wood piece arrangement diagram showing the process of forming the first composite wood piece P34 using two wood pieces P3 and P4. [Figure 2] FIG. 10 is a wood piece arrangement diagram showing the process of forming a second synthetic wood piece P (1-4) using two first synthetic wood pieces P12 and P34. [Figure 3] (a) is a wood piece arrangement diagram showing the process of forming the first composite wood piece P56 using two wood pieces P5 and P6, and (b) is a wood piece arrangement diagram showing the process of forming the first composite wood piece P78 using two wood pieces P7 and P8. [Figure 4] FIG. 10 is a wood piece arrangement diagram showing the process of forming a second synthetic wood piece P (5-8) using two first synthetic wood pieces P56 and P78. [Figure 5] (a) is a wood piece arrangement diagram showing the process of forming a first composite wood piece P910 using two wood pieces P9 and P10, and (b) is a wood piece arrangement diagram showing the process of forming a first composite wood piece P2122 using two wood pieces P21 and P22. [Figure 6] 1(a) is a diagram showing the arrangement of wood pieces of an intermediate flat laminated timber A1'' in which two second composite wood pieces P(1-4), P(5-8) are joined, and FIG. 1(b) is a diagram showing the arrangement of wood pieces of a semi-finished flat laminated timber A1' in which the ends have not been aligned. [Figure 7] FIG. 10 is a diagram showing the arrangement of wooden pieces in the completed flat laminated lumber A1. [Figure 8] FIG. 2 is a perspective view of a completed flat laminated lumber A1 with wood grain displayed. [Figure 9] FIG. 10 is a wood piece arrangement diagram showing the process of forming a third composite wood piece P (23-25) from three wood pieces P23-P25. [Figure 10] 1(a) and 1(b) are diagrams showing the arrangement of wooden pieces of a semi-finished flat laminated timber A2' and a finished flat laminated timber A2, respectively. [Figure 11] 1(a) and 1(b) are respectively an exploded perspective view and a perspective view in use of an ornament K made of a plurality of flat laminated lumber sheets according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be described in more detail below with reference to several best examples. The wooden pieces P1 to P10 and P21 to P25 used in Examples 1 and 2 all have the same thickness but different shapes. [Example]

[0026] 1(a), the wood pieces P1 and P2 are both rectangular, and are arranged so that the grains of the wood pieces P1 and P2 intersect with each other. The reference end faces P1a and P2a of the wood pieces P1 and P2 are aligned flat and connected to the reference end faces P1a and P2a. Furthermore, the opposing joining end faces P1b and P2b are joined using adhesive. In this joined state, the protruding portion P2e of one wood piece P2, which protrudes beyond the opposing end face P1c parallel to the reference end face P1a of the other wood piece P1, is removed to create the first composite wood piece P12. The first composite wood piece P12 is rectangular, with short sides the same length as the short sides of the wood piece P1 and long sides equal to the sum of the long sides of each wood piece P1 and P2.

[0027] In the following, when forming a first synthetic wood piece using two wood pieces, the two wood pieces are all positioned and joined so that their grains intersect to form the first synthetic wood piece, so there is no explanation of the grains intersecting when positioning each wood piece when creating each first synthetic wood piece below.

[0028] 1(b), the wood piece P3 is trapezoidal, with one leg perpendicular to a pair of parallel opposite sides, and the wood piece P4 is rectangular. When the joining end face P3b of the trapezoidal wood piece P3, which is the leg that intersects the pair of opposite sides at a non-right angle, is tightly joined to the center of the joining end face P4b of one long side of the wood piece P4, the rectangular wood piece P4 extends from both ends of the joining end face P3b of the trapezoidal wood piece P3 on the extension plane of the joining end face P3b. In this state, the end face of the opposite side on the long side of the trapezoidal wood piece P3 is set as the reference end face P3a, and the protruding portion P4e of the rectangular wood piece P4 that protrudes from the reference end face P3a is cut off to create the reference end face P4a of the wood piece P4. Thereafter, another protruding portion P4f of the wood piece P4 is cut away using the opposing end face P3c of the wood piece P3 as a reference, to create a first composite wood piece P34 having a trapezoidal shape that approximates a rectangle.

[0029] The step 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 Figure 2, the reference end face P12a on one short side of the rectangular first composite wood piece P12 is aligned with the reference end face P34a on the leg side perpendicular to a pair of opposite sides of the trapezoidal first composite wood piece P34, and the reference end faces P12a, P34a are connected, and the opposing joining end faces P12b, P34b are joined with adhesive.The protruding portion P4g of the first composite wood piece P34 protruding from the opposing end face P12c of the first composite wood piece P12 is then cut off, thereby creating a rectangular second composite wood piece P(1-4) composed of a total of four wood pieces P1-P4.

[0031] Next, following the same process as above, as shown in Figure 3(a), two vertically elongated rectangular wood pieces P5, P6 of different sizes are aligned at one short side of each piece, with reference end faces P5a, P6a, and joined together at one long side of each piece, with joining end faces P5b, P6b, and the protruding portion P5e of the large-sized wood piece P5 protruding from the opposing end face P6c of the wood piece P6 is cut off to create a rectangular first composite wood piece P56. Note that the wood piece P5 is larger than the wood piece P6, and the protruding portion P5e can be used as a separate wood piece after cutting off.

[0032] Similarly, as shown in Figure 3(b), two horizontally rectangular wood pieces P7 and P8 of different sizes are aligned with one long side of each piece as the reference end surface P7a and P8a, and one short side of each piece as the joining end surface P7b and P8b. The two wood pieces P7 and P8 are then joined together, and the protruding portion P8e of the wood piece P8 that protrudes from the opposing end surface P7c of the wood piece P7 is cut off, resulting in a rectangular first composite wood piece P78.

[0033] Then, as shown in Figure 4, the reference end face P56a on one long side of the rectangular first composite wood piece P56 is aligned with the reference end face P78a on one short side of the rectangular first composite wood piece P78, and the two first composite wood pieces P56, P78 are joined at their respective joining end faces P56b, P78b.The protruding portion P8f of the first composite wood piece P78 protruding from the opposite end face of the first composite wood piece P56 is then cut off, thereby creating a rectangular second composite wood piece P(5-8) consisting of a total of four wood pieces P5-P8.

[0034] Then, as shown in Figure 6(a), when the reference end faces of two rectangular second composite wood pieces P(1-4), P(5-8) are aligned and joined at their joining end faces, an intermediate flat laminated lumber A1" is created in which a total of eight wood pieces P1-P8 are joined, with a step occurring on the side of the opposing end face opposite the reference end face.At the time this intermediate flat laminated lumber A1" is created, the creator recognizes that by joining two other first composite wood pieces P910, P2122 to this intermediate flat laminated lumber A1" and aligning the end faces, it will become the finished flat laminated lumber A1. Therefore, the second composite wood pieces P(1-4) of the intermediate flat laminated lumber A1'' have protruding portions P(1-4)e that protrude beyond the opposing end faces P(5-8)c of the other second composite wood pieces P(5-8) to which they are integrally joined, but these are not cut out and are left as they are. The process of creating the two rectangular second composite wood pieces P(1-4) and P(5-8) described above is the "second process" defined in claim 3.

[0035] 5(a) is a wood piece arrangement diagram showing the process of joining two vertically rectangular wood pieces P9, P10 to form a first composite wood piece P910. The two vertically rectangular wood pieces P9, P10 are joined together with one short side of each piece as the reference end face P9a, P10a, and one long side as the joining end face P9b, P10b. The two wood pieces P9, P10 are then joined together, and the protruding portion P9e of the wood piece P9 that protrudes from the opposing end face P10c of the wood piece P10 is removed, resulting in the creation of the rectangular first composite wood piece P910.

[0036] 5(b) is a wood piece arrangement diagram showing the process of forming a first composite wood piece P2122 from two trapezoidal wood pieces P21, P22. The two wood pieces P21, P22 are trapezoids of different sizes, with one leg edge perpendicular to a pair of opposite sides, but the other inclined leg edge (hereinafter referred to as the "inclined leg edge") has a different intersecting angle with the pair of opposite sides. Therefore, simply by joining specific faces together as joining end faces, there is no "reference end face" where each end face connected to each joining end face will be flat. Therefore, by closely adhering the joint end surface P21b, which is the inclined leg edge of the smaller wood piece P21, to the center of the joint end surface P22b, which is the inclined leg edge of the larger wood piece P22, and cutting off the protruding portion P22e of the wood piece P22 that protrudes from the reference end surface P21a of the wood piece P21 to create the reference end surface P22a of the wood piece P22, and then cutting off the protruding portion P22f of the wood piece P22 that is opposite the opposite end surface P21c of the wood piece P21, a trapezoidal first composite wood piece P2122 is created, consisting of two trapezoidal wood pieces P21 and P22.

[0037] Next, as shown in Figure 6(b), using the inside corner 1 of the intermediate flat laminated timber A1'', a first composite wood piece P910 is placed beside the second composite wood piece P (5 to 8) and joined together, and then the first composite wood piece P2122 is placed in the inside corner 2 (see Figure 6(b)) formed by the first composite wood piece P910 and the second composite wood pieces P (1 to 4) and joined together, thereby forming a semi-finished flat laminated timber A1' that is just about to be completed.

[0038] Finally, the protruding portions P910e, P2122e, and P2122f protruding from the end faces of the rectangular flat glued lumber A1, which is the finished product of the semi-finished flat glued lumber A1', are trimmed off. This results in the rectangular flat glued lumber A1, as shown in Figure 7, consisting of 12 irregularly shaped and differently sized wooden pieces P1-P10, P21, and P22 joined together without gaps. Since there are slight irregularities between the wooden pieces on both the front and back sides of the flat glued lumber A1, a planing process is performed as a finishing step. While the protruding portion P22f of the first composite wood piece P2122 was trimmed off in the previous process, it may be left as is and trimmed off along with the other protruding portions when trimming the end faces of the semi-finished flat glued lumber A1'.

[0039] Each of the wood pieces P1-P10, P21, and P22 that make up the flat laminated lumber A1 is made from scrap wood generated by cutting lumber. Unlike the wood pieces that make up parquet, which have precisely defined dimensions, the dimensions of each of the wood pieces P1-P10, P21, and P22 are all unpredictable and random. This randomness of the dimensions of each of the wood pieces P1-P10, P21, and P22, combined with the fact that most of the grain of each pair of adjacent wood pieces in each of the wood pieces P1-P10, P21, and P22 intersects, creates a unique natural design pattern. This unique combination of wood pieces creates a unique and original design, making the flat laminated lumber A1 highly eye-catching. Note that the state in which the grain of each pair of adjacent wood pieces intersects can be called "cross-grain marquetry." [Example]

[0040] The method for forming flat laminated lumber in Example 1 involves first forming a first composite wood piece made by joining two wood pieces together in a rectangular shape, and a second composite wood piece made by joining two first composite wood pieces together, and then sequentially joining the first and second composite wood pieces to gradually increase the number of joined solid wood pieces to form flat laminated lumber A1.The method for forming flat laminated lumber in Example 2 differs in that, in addition to the first and second composite wood pieces, a third composite wood piece made up of a total of three wood pieces is used, formed by joining a single wood piece to the first composite wood piece.

[0041] 9, the reference end faces P23a, P24a of two rectangular wood pieces P23, P24 are aligned flat and joined together at their joining end faces P23b, P24b. Then, the protruding portion P23e of the wood piece P23 relative to the opposing end face P24c of the wood piece P24 is removed to form a rectangular composite wood piece P2324. The reference end face P2324a of the composite wood piece P2324 is aligned with the reference end face P25a of the wood piece P25, and the joining end face P2324b of the composite wood piece P2324 is joined to the joining end face P25b of the wood piece P25. A substantially rectangular third composite wood piece P (23-25) is formed, consisting of a total of three wood pieces, with the protruding portion P25e of the wood piece P25 relative to the opposing end face P2324c of the composite wood piece P2324. Here, the creator of the flat laminated timber recognizes that the third composite wood piece P (23-25) will be placed in the inside corner 1 of the intermediate flat laminated timber A2" and that the protruding portion P25e will become a protruding portion from the end face of the semi-finished flat laminated timber A2'. Therefore, the creator does not cut out the protruding portion P25e but leaves it as it is, and places it in the inside corner 1 of the two second composite wood pieces P (1-4) and P (5-8) that have already been joined, and joins them together. Finally, the first composite wood piece P2122 is placed in the inside corner 2 of the intermediate flat laminated timber A2" that is being made and joined, resulting in the semi-finished flat laminated timber A2' shown in Figure 10(a). The process of placing and joining the third composite wood piece P (23-25) in the inside corner 1 of the intermediate flat laminated timber A2" that is being made is the "third process" defined in claim 4.

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

[0043] The flat laminated timbers A1 and A2 described above are merely examples, and by appropriately combining and joining each of the first to third synthetic wood pieces with a single square wooden piece, it is possible to form a wide variety of flat laminated timbers in which the combination patterns of the numerous wooden pieces are all different for each molded product.

[0044] As described above, the individual wood pieces P1 to P10, P21 to P25 are irregularly shaped and of different sizes, so they cannot be joined one by one to form a flat plate. However, by taking two wood pieces through the above processes to intermediately create square or nearly square first composite wood pieces P12, P34, P56, P78, P910, P2122, and then joining these first composite wood pieces together to create second composite wood pieces P(1 to 4), P(5 to 8), or by joining a single square wood piece P25 to the first composite wood piece P2324 to create a third composite wood piece P(23 to 25), it is possible to create flat laminated lumber A1, A2 using a plurality of irregularly shaped and differently sized wood pieces.

[0045] The flat laminated timbers A1 and A2 formed through the above process are an assembly of many irregularly shaped wood pieces made from scrap wood of different sizes. As each individual flat laminated timber is an assembly of different wood pieces, no two pieces will have the same appearance. This clearly distinguishes them from parquet products, which are made by joining multiple pieces with predetermined shapes, dimensions and surface patterns, and all have the same appearance.

[0046] In addition, in both of the above Examples 1 and 2, the first to third composite wood pieces are joined to form the flat laminated timber A1 and A2, but in relation to the product, it is also possible to join a single wood piece to the end to ensure the desired shape or dimensions, which are often rectangular.

[0047] The flat laminated lumber of the present invention can be applied to various ornaments and miscellaneous items that require interior design and aesthetic appeal. For example, the example shown in Fig. 11 is a type of ornament K that emits the scent of cypress. It consists 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 assembled with a total of five flat laminated lumber pieces A11 to A13 of the present invention in the form of a lid. A top panel 12 made of flat laminated lumber A11 is integrally assembled with side panels 13 and 14 made of flat laminated lumber A12 and A13 (the remaining two panels are located behind and not shown). A small piece of cypress lumber 11 is contained inside the box body B, and the cypress scent is released to the outside through numerous through-holes 15 provided in the top panel 12 of the lid body D. Therefore, when the ornament K is placed in an entranceway or the like, the entranceway is enveloped in the scent of cypress, allowing the user to enjoy the feeling of nature.

[0048] The flat laminated timber A11 to A13 are all formed from square wooden pieces, and are formed by sequentially joining together a second square composite wood piece made by joining four square wooden pieces together, or a first square composite wood piece made by joining two square wooden pieces together. To be precise, the lid body D is formed by assembling a total of five flat laminated timber pieces A11 to A13, including two pieces not shown, after processing the ends of these pieces.

[0049] Furthermore, each of the flat laminated wood pieces A11 to A13 that make up the top plate 12 and side plate portions 13, 14 of the box body B is made up of a large number of wooden pieces, and therefore each wooden piece also gives off the scent of the lumber itself. [Explanation of symbols]

[0050] A1 ,A2 ,A11,A12,A13: Flat laminated wood A1 ', A2 ': Semi-finished flat laminated wood A1 '',A2'': Intermediate flat laminated wood P1~P10, P21~P25: Wooden pieces P1a to P10a, P21a to P25a: Reference end faces P1b~P10b,P21b ~P25b: Joint end surface P1c, P3c, P6c,P7c, P10c,P21c P24c: Opposite end face P2e, P4e, P5e, P8e, P9e, P22e,P910e, P2122e,P(1~4)e ,P(23~25)e: Protrusion P4f, P8f, P22f, P2122f:Protrusion P12, P34, P56, P78, P910, P2122: First synthetic wood piece P(1-4), P(5-8): Second synthetic wood piece P(23~25): 3rd synthetic wood piece 1, 2: Corner that occurs when joining multiple wooden pieces

Claims

1. A method for forming laminated lumber by gathering together a large number of wood pieces made of various types of irregularly shaped scrap wood with the same board thickness and joining them into a flat plate, The method includes a first step of joining the two wood pieces together to remove unnecessary protruding portions to create a square-shaped first composite wood piece, and joining the first composite wood piece to an intermediate flat laminated wood piece that is in the process of being formed; A method for forming flat laminated timber, characterized in that the total number of wood pieces joined by repeating the first step is gradually increased, thereby joining a large number of wood 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 composite 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 the 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 flat laminated timber according to claim 1, 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. A method for forming flat laminated timber as described in claim 1 or 2, characterized in that it includes a third step of joining the first synthetic wood piece or the first synthetic wood piece with the remaining unnecessary protrusion to a single square wooden piece, removing the unnecessary protrusion to create a square third synthetic wood piece consisting of a total of three wooden pieces, and joining the third synthetic wood piece to the intermediate flat laminated timber.

5. 3. The method for forming flat laminated lumber according to claim 1 or 2, wherein the first composite wood piece includes a piece formed by joining non-square wood pieces to form a square or approximately square 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 pieces intersect with each other.

8. A flat laminated lumber formed by the forming method of any one of claims 1 to 7.

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