Plywood, methods for manufacturing plywood, and furniture made from plywood.
The method of manufacturing plywood with angled boundary lines on all surfaces addresses the lack of design features in conventional plywood, enabling aesthetic furniture production without complex equipment.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- MOCLAS CO LTD
- Filing Date
- 2024-12-17
- Publication Date
- 2026-06-29
AI Technical Summary
Conventional plywood designs lack distinctive design features on surfaces like the ceiling and bottom, limiting their use in furniture where aesthetics are important, and existing methods for creating angled boundary lines require specialized equipment and technology.
A method for manufacturing plywood where boundary lines appear on the ceiling and bottom surfaces at an angle to the longitudinal direction, using standard cutting techniques without specialized equipment, by cutting flat plates vertically and then at an angle to create angled boundary lines on all surfaces.
The method allows for plywood to be used in furniture design with distinctive features without requiring specialized equipment, enhancing aesthetic appeal while maintaining simplicity in manufacturing.
Smart Images
Figure 2026106353000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to plywood, a method for manufacturing plywood, and furniture made of plywood as a material.
Background Art
[0002] FIG. 1 is a perspective view of a conventional plywood (laminated board). The conventional plywood (laminated board) 100 shown in FIG. 1 has a flat plate shape in which a single layer (one sheet) of flat plate 101 is laminated. On the front surface 100A and the right side surface 100B, the boundary line 102 between the single layer (one sheet) of flat plate 101 and the single layer (one sheet) of flat plate 101 appears. Although not shown in FIG. 1, the boundary line 102 also appears on the back surface 100D and the left side surface 100E. On the flat surface (ceiling surface) 100C, the boundary line 102 does not appear. Although not shown in FIG. 1, the boundary line 102 also does not appear on the bottom surface 100F. The boundary line 102 appears horizontally (without an angle) with respect to the longitudinal direction of the front surface 100A, the right side surface 100B, the back surface 100D, and the left side surface 100E.
[0003] On the other hand, there is a laminated board in which a line corresponding to the boundary line 102 appears obliquely (at an angle) with respect to the longitudinal direction of the surface corresponding to the front surface 100A (FIG. 3 of Patent Document 1).
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] For products made of the conventional plywood (laminated board) 100 shown in FIG. 1, particularly furniture where design is emphasized, if a plywood (laminated board) in which the boundary line 102 also appears on the flat surface (ceiling surface) 100C and the bottom surface 100F is used as the material, the boundary line 102 can be utilized as a more distinctive design feature. The boundary line 102 can be utilized as a design feature more effectively if it appears not only horizontally (without an angle) to the longitudinal direction of the front 100A, right side 100B, back 100D, and left side 100E, but also diagonally (with an angle) to the longitudinal direction.
[0006] As shown in Figure 3 of Patent Document 1, the laminated board has lines appearing on the surface corresponding to the planar (ceiling) surface 100C in Figure 1, and as described in
[0003] , the line corresponding to the boundary line 102 appears obliquely (at an angle) to the longitudinal direction of the surface corresponding to the front surface 100A. However, the laminated board described in Patent Document 1 is manufactured by stacking single-layer (one-sheet) flat plates at an angle to the longitudinal direction of the front surface, and then cutting the laminated board (plywood) at the midpoint of its thickness (half the thickness). This differs from the generally practiced method of stacking plates horizontally (without an angle) to the longitudinal direction of the front surface, and therefore requires specialized equipment and technology.
[0007] Therefore, the present invention aims to provide a plywood (laminated board) 100 in which the boundary line 102 appears on the planar (ceiling) surface 100C and the bottom surface 100F, and the boundary line 102 appears at an angle (diagonally) with respect to the longitudinal direction of the front surface 100A and the back surface 100D, as well as a method for manufacturing the same and furniture made from the same plywood. [Means for solving the problem]
[0008] To solve the above problems, the present invention has the following means.
[0009] As a first means, in a plywood in the shape of a flat plate, in which flat plates are stacked vertically and the plywood consists of a front, back, top (top), bottom, left side and right side, the boundary lines of the flat plates appear at an angle in the longitudinal direction of the front and back, the boundary lines of the flat plates appear horizontally in the longitudinal direction of the left and right side, and the boundary lines of the flat plates also appear on the top (top) and bottom.
[0010] As a second method, a method for manufacturing the first method, characterized in that a flat sheet of plywood is formed by stacking flat sheets vertically and consisting of a front, back, top (ceiling), bottom, left side and right side, and a blade is pressed against the front at an angle in the longitudinal direction and moved from the left side to the right side to cut off the top; the top (ceiling) and bottom of the plywood from which the top has been cut off are reversed, the blade is pressed against the front at an angle in the longitudinal direction and moved from the right side to the left side to cut off the bottom; and the left side and right side of the plywood from which the bottom has also been cut off are pressed against the front perpendicularly in the longitudinal direction and moved from the top (ceiling) to the bottom.
[0011] As a third means, the upper plane (ceiling surface) cut out of the second means is connected to the lower bottom surface cut out of the second means in the direction below, the left and right sides are perpendicular to the plane (ceiling surface) and bottom surface, the boundary lines of the flat plate appear at an angle in the longitudinal direction of the front and back, the boundary lines of the flat plate appear horizontally in the longitudinal direction of the left and right sides, and the boundary lines of the flat plate also appear on the plane (ceiling surface) and bottom surface.
[0012] As a fourth means, the first means or the third means It features furniture made from [material name]. [Effects of the Invention]
[0013] According to the present invention, based on conventional plywood (laminated board) 100, the boundary line 102 appears on the planar (ceiling) and bottom surfaces, and the boundary line 102 appears at an angle (diagonally) to the longitudinal direction of the front and back surfaces. The present invention also provides a method for manufacturing plywood 1 and furniture made from plywood 1. Since the boundary line of plywood 1 can be utilized as a design feature, plywood 1 can be used as a material for furniture where design is particularly important, and furniture made from plywood 1 has a distinctive design.
[0014] According to the present invention, the method for manufacturing plywood 1 does not require specialized equipment or technology like the manufacturing method described in Patent Document 1, and is not as complex as the manufacturing method described in Patent Document 1.
[0015] According to the present invention, it is also possible to provide a plywood 50 in which the upper and lower portions cut out in the production of the plywood 1 are joined, and the boundary line 102 appears on both the plane (ceiling surface) and the bottom surface, and the boundary line 102 appears obliquely (at an angle) with respect to the longitudinal direction of the front and back surfaces. Since the boundary line of the plywood 50 can be utilized as a design feature, the plywood 50 can also be utilized particularly as a material for furniture that emphasizes design, and furniture made of the plywood 50 also has characteristics in design.
Brief Description of the Drawings
[0016] [Figure 1] It is a perspective view of a conventional plywood (laminated board). [Figure 2] It is a perspective view of the plywood of the present invention. [Figure 3] It is a view of the manufacturing method of the plywood of the present invention. [Figure 4] It is a front view (photo) of furniture (storage box) made of the plywood of the present invention. [Figure 5] It is a perspective view (photo) of furniture (storage box) made of the plywood of the present invention. [Figure 6] It is a view of a plywood of another form of the present invention.
Embodiments for Carrying Out the Invention
[0017] Hereinafter, the present invention will be described with reference to the drawings. Note that the following description is an example showing the claims and does not mean a limitation of the claims.
[0018] FIG. 2 is a perspective view of the plywood of the present invention, and FIG. 3 is a view of the manufacturing method of the plywood of the present invention. The plywood 1 shown in FIG. 2 is cut out (processed) into a flat plate shape from the left side surface 100E toward the right side surface 100B with a thickness T and obliquely (at an angle θ) with respect to the longitudinal direction of the front surface 100A, compared with the conventional plywood (laminated board) 100 shown in FIG. 1, and then the left side surface and the right side surface are cut out (processed) so as to be perpendicular to the plane (ceiling surface) and the bottom surface. Similarly, after cutting (processing) from the right side surface 100B toward the left side surface 100E, the left side surface and the right side surface may be cut (processed) so as to be perpendicular to the flat surface (ceiling surface) and the bottom surface. The two-dot chain line is a virtual line representing the longitudinal direction of the front surface 100A of the conventional plywood (laminated board) 100. Details of the manufacturing method of the plywood 1 will be described in
[0029] to
[0034] .
[0019] The plywood 1 is widely targeted at those manufactured from a flat plate shape in which single-layer (one sheet) flat plates 101 are laminated, and is not narrowly limited to those manufactured from veneer plywood which is generally well-known.
[0020] The directions of the front surface 1A, the right side surface 1B, the flat surface (ceiling surface) 1C, the back surface 1D, the left side surface 1E, and the bottom surface 1F of the plywood 1 are the same as the directions of the front surface 100A, the right side surface 100B, the flat surface (ceiling surface) 100C, the back surface 100D, the left side surface 100E, and the bottom surface 100F of the conventional plywood (laminated board) 100, respectively.
[0021] The boundary line 2A of the front surface appears on the front surface 1A. The boundary line 2A of the front surface is the boundary line 102 that appears on the front surface 100A of the conventional plywood (laminated board) 100, and appears obliquely (having an angle θ1A) with respect to the longitudinal direction of the front surface 1A. The boundary line 102 appears horizontally (without an angle) with respect to the longitudinal direction of the front surface 100A. However, as described in
[0018] , the plywood 1 is cut (processed) obliquely (having an angle θ) with respect to the longitudinal direction of the front surface 100A, has a thickness T, and is cut (processed) into a flat plate shape from the left side surface 100E toward the right side surface 100B, and then the left side surface and the right side surface are cut (processed) so as to be perpendicular to the flat surface (ceiling surface) and the bottom surface. Therefore, the boundary line 2A of the front surface appears obliquely (having an angle θ1A) with respect to the longitudinal direction of the front surface 1A.
[0022] Since the boundary line 2A of the front surface is parallel to the two-dot chain line (the virtual line representing the longitudinal direction of the front surface 100A of the conventional plywood (laminated board) 100), the angle θ1A is equal to the angle θ. Although not shown in Figure 2, the back surface 1D, like the front surface 1A, has a back surface boundary line 2D that appears diagonally to the longitudinal direction of the back surface 1D (with an angle θ1D). Angle θ1D is equal to angle θ1A and angle θ.
[0023] The plane (ceiling surface) 1C shows the boundary line 2C of the plane (ceiling surface). As described in
[0018] , the plywood 1 is made by cutting (processing) a flat plate shape from the left side 100E to the right side 100B at an angle (angle θ) with respect to the longitudinal direction of the front surface 100A, and having a thickness T, compared to conventional plywood (laminated board) 100. After that, the left side and right side are cut (processed) so that they are perpendicular to the plane (ceiling surface) and the bottom surface. Therefore, the right edge of the single-layer (one sheet) flat plate 101 appears as the boundary line 2C of the plane (ceiling surface) on the plane (ceiling surface) 1C. If plywood 1 is cut (processed) from the right side 100B to the left side 100E compared to conventional plywood (laminated board) 100, and then the left and right sides are cut (processed) so that they are perpendicular to the plane (ceiling surface) and the bottom surface, then the left edge of the single-layer (one sheet) flat plate 101 appears as the boundary line 2C of the plane (ceiling surface) 1C.
[0024] The end 2A1 of the front boundary line 2A is in contact with the end 2C2 of the planar (ceiling) boundary line 2C. The other end 2C1 of the planar (ceiling) boundary line 2C is in contact with the end 2D2 of the back boundary line 2D.
[0025] The order from left to right of the boundary line 2C of the plane (ceiling surface) appearing on the plane (ceiling surface) 1C is the same as the order from the plane (ceiling surface) to the bottom surface of the stacked single-layer (one-sheet) flat plate 101. If plywood 1 is cut (processed) from the right side 100B to the left side 100E compared to conventional plywood (laminated board) 100, and then the left and right sides are cut (processed) so that they are perpendicular to the plane (ceiling surface) and the bottom surface, the order from right to left of the boundary line 2C of the plane (ceiling surface) that appears on the plane (ceiling surface) 1C is the same as the order from the plane (ceiling surface) to the bottom surface of the laminated single layer (one sheet) flat plate 101.
[0026] Although not shown in Figure 2, the bottom surface 1F, like the plan (ceiling surface) 1C, also shows the rightward edge of the single-layer (one sheet) flat plate 101 as the bottom boundary line 2F. If plywood 1 is cut (processed) from the right side 100B to the left side 100E compared to conventional plywood (laminated board) 100, and then the left and right sides are cut (processed) so that they are perpendicular to the plane (ceiling surface) and the bottom surface, then the left edge of the single layer (one sheet) flat plate 101 appears as the bottom boundary line 2F on the bottom surface 1F. The bottom boundary line 2F, which is end 2F1, is in contact with the other end of the front boundary line 2A, which is 2A2, and the other end of the bottom boundary line 2F, which is 2F2, is in contact with the other end of the back boundary line 2D, which is 2D1. The order from left to right of the boundary line of the bottom surface (2F) that appears on the bottom surface (1F) is the same as the order from the plane (ceiling surface) to the bottom surface of the stacked single-layer (one-piece) flat plate 101. If plywood 1 is cut (processed) from the right side 100B to the left side 100E compared to conventional plywood (laminated board) 100, and then the left and right sides are cut (processed) so that they are perpendicular to the plane (ceiling) and bottom, the order from right to left of the bottom boundary line 2F that appears on the bottom 1F is the same as the order from the plane (ceiling) to the bottom of the laminated single layer (one sheet) flat plate 101.
[0027] On the right side 1B, the boundary line 2B of the right side is revealed. The boundary line 2B of the right side is the boundary line 102 that appears on the right side 100B of conventional plywood (laminated board) 100. The boundary line 2B on the right side appears horizontally (without any angle) to the longitudinal direction of the right side 1B. Although not shown in Figure 2, the boundary line 2E of the left side 1E appears horizontally (without any angle) to the longitudinal direction of the left side 1E, similar to the right side 1B.
[0028] When referring collectively to the boundary line 2A on the front, boundary line 2B on the right side, boundary line 2C on the top (ceiling) surface, boundary line 2D on the back, boundary line 2E on the left side, and boundary line 2F on the bottom surface, they shall be referred to as boundary line 2 of the present invention.
[0029] Figure 3 is a diagram of the plywood manufacturing method of the present invention, where (a) illustrates the blade used and (b) illustrates the use of the blade. The blade 10 shown in (a) is a commonly used type, driven vertically (between the plane (ceiling) and the bottom) and horizontally by a motor or the like (details omitted from description), and the blade tip 10A cuts single-layer (one sheet) flat plates and plywood (laminated boards) made by laminating these flat plates. The blade 10 has a pivot axis that allows it to be driven in the vertical direction (direction between the plane (ceiling surface) and the bottom surface) and the horizontal direction, as well as to change its angle relative to the horizontal direction. Blades that are rotated by a motor or the like are commonly used, and the plywood 1 is manufactured using a blade 10 that has a pivot axis 10B.
[0030] The use of the blade 10 shown in (b) involves first rotating (driving) the blade 10 so that it has an angle θ with respect to the longitudinal direction of the front surface 100A of the conventional plywood (laminated board) 100, pressing the blade tip 10A against the flat surface (ceiling surface) 100C, and then moving (driving) it from the left side 100E to the right side 100B while maintaining the angle θ, thereby cutting (processing) the upper plywood 20 from the conventional plywood (laminated board) 100. The planar surface (ceiling surface) 100C of the conventional plywood (laminated board) 100, from which the upper plywood 20 has been cut (processed), becomes the planar surface (ceiling surface) 1C of plywood 1.
[0031] Next, the top surface (ceiling surface) 100C and bottom surface 100F of the conventional plywood (laminated board) 100 from which the top plywood 20 has been cut are reversed, the blade 10 is rotated (driven) so that it has an angle θ with respect to the longitudinal direction of the front surface 100A, the blade tip 10A is pressed against the bottom surface 100F, and while maintaining the angle θ, it is moved (driven) from the right side 100B to the left side 100E to cut (process) the lower plywood 30 from the conventional plywood (laminated board) 100. The blade tip 10A is pressed against the plywood 1, from the bottom surface 100F towards the flat (top) surface 100C, so that the plywood 1 becomes a flat plate with a thickness T. The bottom surface 100F of the conventional plywood (laminated board) 100, from which the lower plywood 30 has been cut (processed), becomes the bottom surface 1F of plywood 1.
[0032] Finally, the left side 100E and right side 100B of the conventional plywood (laminated board) 100, from which the upper plywood 20 and lower plywood 30 have been cut off, are cut (processed) so that they are perpendicular to the flat surface (ceiling surface) 100C and the bottom surface 100F. For cutting, you may use blade 10, or any other commonly used blade. The left side 100E and right side 100B after cutting become the left side 1E and right side 1B of plywood 1, respectively.
[0033] The front 100A and back 100D of the conventional plywood (laminated board) 100 become the front 1A and back 1D of plywood 1, respectively.
[0034] The manufacturing method for plywood 1, in which plywood 1 is cut (processed) from the right side 100B toward the left side 100E compared to conventional plywood (laminated board) 100, and then the left and right sides are cut (processed) so that they are perpendicular to the plane (ceiling surface) and the bottom surface, is to press the cutting edge 10A against the plane (ceiling surface) 100C, and while maintaining the angle θ, move (drive) it from the right side 100B to the left side 100E, and then press the cutting edge 10A against the bottom surface 100F, and while maintaining the angle θ, move (drive) it from the left side 100E to the right side 100B, and the rest is as described in
[0030] to
[0033] .
[0035] The upper plywood 20 and lower plywood 30, cut from the conventional plywood (laminated board) 100, are joined together to form a different type of plywood 50. Details are explained in sections
[0045] to
[0051] .
[0036] The general outline of the laminated board and its manufacturing method described in Patent Document 1 is shown in
[0006] , but the differences between the plywood 1 and its manufacturing method of the present invention and the laminated board and its manufacturing method of Patent Document 1 will be explained.
[0037] Patent Document 1 primarily provides a manufacturing method, the purpose of which is to effectively utilize the constituent materials that make up the laminated board (to improve yield) and to increase the strength of the laminated board. To this end, the constituent material, which consists of single sheets laminated diagonally, is divided (cut) in the middle in the vertical direction (thickness), and the lower constituent material, which has been divided (cut), is glued onto the upper constituent material, which has been divided (cut), inverted upside down. The characteristics of laminates manufactured using this method are their high strength and the fact that the edges of the veneers appear stepped in the middle of the vertical direction (thickness).
[0038] In contrast, the present invention primarily provides plywood 1 characterized by a design suitable for use as furniture material, and also provides a method for manufacturing the plywood 1 and furniture made from plywood 1. A distinctive design feature of plywood 1 is that the boundary lines 2A on the front, 2B on the right side, 2C on the top (ceiling), 2D on the back, 2E on the left side, and 2F on the bottom are visible on all surfaces, namely the front 1A, right side 1B, top (ceiling) 1C, back 1D, left side 1E, and bottom 1F. In addition, another design feature is that the boundary lines 2A on the front and 2D on the back appear diagonally (with an angle θ1A) to the longitudinal direction of the front 1A and back 1D.
[0039] The laminated board of Patent Document 1, like plywood 1, has boundary lines on all surfaces, and the boundary lines on the front and back surfaces appear oblique to the longitudinal direction of the front and back surfaces. However, this is not intentional and is a result of carrying out the manufacturing method described in
[0120] . The intention of this manufacturing method is to make the edges of the veneers appear in a stepped manner in the middle of the vertical direction (thickness) of the laminated board. This manufacturing method is complex because it uses components made by laminating veneers diagonally, divides (cuts) the components vertically in the middle of their thickness, and then glues the lower component, which has been divided (cut), onto the upper component, inverting it vertically.
[0040] In contrast, the manufacturing method of plywood 1 uses conventional plywood (laminated material) 100 that is not laminated diagonally, and only requires cutting (processing) the conventional plywood (laminated material) 100, eliminating the need to glue the divided (cut) components together.
[0041] Figure 4 is a front view (photograph) of the furniture (storage box) made of plywood according to the present invention, and Figure 5 is a perspective view (photograph) of the furniture (storage box) made of plywood according to the present invention. The furniture (storage box) 80 shown in Figures 4 and 5 is made of plywood 1, and the front boundary line 81A appears on the front plywood 80A, the right side boundary line 81B appears on the right side plywood 80B, the back boundary line 81D appears on the back plywood 80D, and the left side boundary lines 81E-A, 81E-B, and 81E-C appear on the left side plywood 80E.
[0042] The boundary lines 81B on the right side and 81E-A on the left side appear diagonally (at an angle) from one end to the other. The boundary lines 81B on the right side and 81E-A on the left side are manifestations of the front boundary line 2A (or the back boundary line 2D) shown in Figure 2.
[0043] The boundary line 81E-B on the left side appears horizontally (without an angle) from one end to the other. The boundary line 81E-B on the left side is the manifestation of the boundary line 2B on the right side (or the boundary line 2E on the left side) shown in Figure 2.
[0044] The front boundary line 81A, the rear boundary line 81D, and the left side boundary lines 81E-C appear horizontally (without any angle) from one end to the other. The front boundary line 81A, the rear boundary line 81D, and the left side boundary line 81E-C are manifestations of the boundary line 2C (or bottom boundary line 2F) on the plane (ceiling surface) shown in Figure 2.
[0045] Figure 6 shows a plywood sheet according to another embodiment of the present invention. Another form of plywood is made by joining together an upper plywood sheet 20 and a lower plywood sheet 30 cut from a conventional plywood (laminated board) 100 shown in Figure 3 to form a plywood sheet 50. (a) describes the state in which the upper plywood 20 and the lower plywood 30 have been completed, (b) describes the manufacturing method of the plywood 50, and (c) describes the state in which the plywood 50 has been completed.
[0046] The upper plywood 20 shown in (a) has a front boundary line 21A on the front 20A and a right side boundary line 21B on the right side 20B. Although not shown, the back boundary line 21D is on the back 20D and the bottom boundary line 21F is on the bottom 20F. Note that the plane (ceiling surface) 20C is the plane (ceiling surface) 100C of the conventional plywood (laminated board) 100 shown in Figure 3, so no boundary line is visible. The front boundary line 21A (and the back boundary line 21D) and the right side boundary line 21B are the boundary lines 102 of the conventional plywood (laminated board) 100 shown in Figure 3, and therefore appear horizontally (without an angle) to the longitudinal direction of the front 20A (and the back 20D) and the right side 20B. The bottom boundary line 21F, similar to the boundary line 2C on the planar (ceiling) surface of plywood 1 shown in Figure 2, shows the left edge of the single-layer (one sheet) flat plate 101.
[0047] In the lower plywood 30 shown in (a), the front boundary line 31A is visible on the front 30A, and the planar (ceiling surface) boundary line 31C is visible on the planar (ceiling surface) 30C. Although not shown, the back boundary line 31D is visible on the back 30D, and the left side boundary line 31E is visible on the left side 30E. Note that the bottom surface 30F is the bottom surface 100F of the conventional plywood (laminated board) 100 shown in Figure 3, so no boundary line is visible. The front boundary line 31A (and the back boundary line 31D) and the left side boundary line 31E are the boundary lines 102 of the conventional plywood (laminated board) 100 shown in Figure 3, and therefore appear horizontal (without an angle) to the longitudinal direction of the front 30A (and the back 30D) and the left side 30E. The boundary line 31C on the plane (ceiling surface) is the left edge of the single-layer (one sheet) flat plate 101, similar to the boundary line 2F on the bottom surface of plywood 1 shown in Figure 2.
[0048] (b) shows the state in which the upper plywood 20 is moved downwards from the lower plywood 30 to join the bottom surface 30F and the flat surface (ceiling surface) 20C. It is best to use adhesive for joining, but other methods may also be used.
[0049] As shown in (b), unlike in (a), the front boundary line 21A (and the back boundary line 21D) and the front boundary line 31A (and the back boundary line 31D) appear obliquely (at an angle) to the longitudinal direction of the front 20A (and front 30A) and the back 20D (and back 30D). Although not shown in the diagram, this is because, after joining the bottom surface 30F and the top surface (ceiling surface) 20C, the right side surface 20B (and right side surface 30B) and left side surface 20E (and left side surface 30E) were cut (processed) so that they were perpendicular to the top surface (ceiling surface) 30C and the bottom surface 20F, while the front surface 20A (and front surface 30A) and back surface 20D (and back surface 30D) were angled (had an angle) with respect to the longitudinal direction. In this way, plywood 50 is manufactured.
[0050] In the plywood 50 shown in (c), the front boundary line 51A appears on the front 50A, the right side boundary line 51B appears on the right side 50B, and the planar (ceiling) boundary line 51C appears on the planar (ceiling) surface 50C. Although not shown, the back boundary line 51D appears on the back 50D, the left side boundary line 51E appears on the left side 50E, and the bottom boundary line 51F appears on the bottom surface 50F. The front boundary line 51A is formed by the front boundary line 21A and the front boundary line 31A; the right side boundary line 51B is formed by the right side boundary line 21B and the right side boundary line 31B; the planar (ceiling) boundary line 51C is formed by the planar (ceiling) boundary line 31C; the back boundary line 51D is formed by the back boundary line 21D and the back boundary line 31D; the left side boundary line 51E is formed by the left side boundary line 21E and the left side boundary line 31E; and the bottom boundary line 51F is formed by the bottom boundary line 21F.
[0051] The front boundary line 51A and the rear boundary line 51D appear at an angle (diagonally) to the longitudinal direction of the front 50A and rear 50D. The boundary lines 51B on the right side and 51E on the left side appear horizontally (without any angle) to the longitudinal direction of the right side 50B and left side 50E. The boundary line 51C on the top (ceiling surface) and the boundary line 51F on the bottom surface are the same as the boundary line 2C on the top (ceiling surface) and the boundary line 2F on the bottom surface of the plywood 1 shown in Figure 2, where the left edge of the single-layer (one sheet) flat plate 101 is visible. [Explanation of symbols]
[0052] 1 Plywood 1A Front 1B Right side 1C plane (ceiling surface) 1D back 1E Left side 1st floor bottom 2. Boundary of the present invention 2A Front boundary line 2A1 The edge of the front boundary line 2A2 The edge of the front boundary line 2B Right side boundary 2C Boundary of the plane (ceiling surface) 2C1 Edge of the boundary line of the plane (ceiling surface) The edge of the boundary line of the 2C2 plane (ceiling surface) 2D background boundary 2D1 Edge of the back boundary 2D2 Edge of the back boundary 2E Left side boundary 2nd floor bottom boundary 2F1 Edge of the bottom boundary line 2F2 Edge of the bottom boundary 10 blades 10A cutting edge 10B Swivel axis 20 Top plywood 20A front 20B Right side 20C plane (ceiling surface) 20D back 20E Left side 20F bottom 21A Front boundary line 21B Right side boundary 21D Rear boundary 21F Bottom boundary line 30 Lower plywood 30A front 30B Right side 30C plane (ceiling surface) 30D back 30E Left side 30F bottom 31A Front boundary line 31C Boundary line of the plane (ceiling surface) 31D Rear boundary 31E Left side boundary 50 plywood 50A front 50B Right side 50C plane (ceiling surface) 50D back 50E Left side 50F bottom 51A Front boundary line 51B Right side boundary 51C Boundary line of the plane (ceiling surface) 51D Rear boundary 51E Left side boundary 51F Bottom boundary line 80 Furniture (Storage Boxes) 80A Front plywood 80B Right side plywood 80D plywood on the back 80E Left side plywood 81A Front boundary line 81B Right side boundary line 81D Rear boundary 81E-A Boundary line on the left side 81E-B Left side boundary line 81E-C Left side boundary line 100 Conventional plywood (laminated board) 100A Front 100B Right side 100C plane (ceiling surface) 100D back 100E Left side 100F Bottom 101 Single-layer (single sheet) flat plate 102 Boundary Line θ is the angle relative to the longitudinal direction of the front surface 100A. θ1A: Angle relative to the longitudinal direction of the front view 1A. θ1D is the angle of the back surface 1D relative to the longitudinal direction. T plywood 1 thickness
Claims
1. A plywood in the shape of a flat plate, in which flat plates are stacked vertically and the plywood consists of a front, back, top (ceiling), bottom, left side and right side, characterized in that the boundary lines of the flat plates appear at an angle in the longitudinal direction of the front and back, the boundary lines of the flat plates appear horizontally in the longitudinal direction of the left and right side, and the boundary lines of the flat plates also appear on the top (ceiling) and bottom.
2. A method for manufacturing plywood according to claim 1, characterized in that flat sheets are stacked vertically, and the flat sheet is composed of a front, back, top (top), bottom, left side and right side, a blade is pressed against the front at an angle in the longitudinal direction and moved from the left side to the right side to cut off the top, the top (top) and bottom of the plywood from which the top has been cut off are reversed, the blade is pressed against the front at an angle in the longitudinal direction and moved from the right side to the left side to cut off the bottom, and the blade is pressed against the plywood from which the bottom has also been cut off perpendicular to the longitudinal direction of the front and moved from the top (top) to the bottom to cut off the left side and right side.
3. A plywood characterized in that the cut-out upper plane (ceiling surface) described in claim 2 is joined to the lower bottom surface described in claim 2, the left and right sides are perpendicular to the plane (ceiling surface) and bottom surface, the boundary lines of the flat plate appear at an angle in the longitudinal direction of the front and back, the boundary lines of the flat plate appear horizontally in the longitudinal direction of the left and right sides, and the boundary lines of the flat plate also appear on the plane (ceiling surface) and bottom surface.
4. Furniture made from plywood as described in claim 1 or 3.