Plate

Abstract

The utility model relates to a plate. Existing plates are troublesome to process, and consequently the cost is high. The utility model provides surface layers and a supporting layer arranged between the surface layers, the supporting layer comprises bamboo cutting pieces which are arranged in parallel in the same direction, the bamboo cutting pieces are obtained by cutting raw bamboo poles with annular sections through axial sheet layers, and the bamboo cutting pieces are provided with connecting surfaces for the corresponding surface layers to be attached and glued. The raw bamboo pole is cut into the bamboo cutting pieces with the connecting faces through the piece layers, the smooth connecting faces are formed through the notches when the raw bamboo pole is cut into the bamboo cutting pieces, the raw bamboo pole can be attached and adhered to the surface layer conveniently, the bamboo cutting pieces do not need to be cut, it is guaranteed that bamboo green, tabasheer and bamboo diaphragms on the raw bamboo pole can be utilized, and the bamboo cutting pieces are not prone to being damaged. The raw material utilization efficiency is effectively improved, the raw material cost is reduced, the connecting faces can be synchronously machined and formed when bamboo cutting pieces are obtained through cutting, the machining steps are effectively simplified, the machining efficiency is improved, the labor cost and the equipment cost are reduced, and the use experience is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of bamboo processing, in particular to a board. Background Art

[0002] Bamboo is considered to be the most efficient material in nature. It has a small shrinkage, high elasticity and toughness, and good mechanical properties and tensile strength. The ultimate tensile strength and compressive strength along the grain are 180 MPa and 80 MPa respectively, which are 2.5 times and 1.5 times that of Chinese fir respectively. It is a natural and environmentally friendly economic product and can be processed into bamboo boards for application in engineering structures and furniture manufacturing.

[0003] The existing bamboo boards include a support layer and a surface layer. The support layer is formed by cutting a raw bamboo pole. During processing, first, the raw bamboo pole with a circular cross-section is axially cut into a plurality of bamboo strips. Then, the inner surface, outer surface and both side surfaces of the bamboo strips are processed into planes so that the cross-sectional contour of the bamboo strips is square. After that, the long strips are arranged side by side and adhered to form a support layer with the required size. Finally, the surface layer is adhered to the top and bottom surfaces of the support layer, thereby processing and forming a bamboo board.

[0004] The cross-sectional contour of the bamboo strip is square and has a flat surface, which not only facilitates the adjacent bamboo strips to be adhered through the flat wall surfaces, but also facilitates the top and bottom surfaces of the bamboo strips to be respectively joined to form the flat top and bottom surfaces of the support layer, which is convenient for adhering to the surface layer. However, during the processing, the raw bamboo pole needs to be first radially divided into semi-finished strips with an arc-shaped cross-section, and then the top, bottom and side surfaces of the semi-finished strips are respectively cut to obtain bamboo strips with a square cross-section. This will not only cut and discard the bamboo green, bamboo yellow and bamboo septum on the surface of the semi-finished strips when processing the bamboo strips, reducing the raw material utilization rate and increasing the raw material cost, but also affect the production efficiency due to the cumbersome processing steps, thereby increasing the labor cost and equipment cost and affecting the use experience. Summary of the Utility Model

[0005] In order to solve the deficiencies of the prior art, the utility model provides a board. The raw bamboo pole is formed into bamboo slices with connecting surfaces by sheet cutting. The bamboo slices are arranged side by side to form a support layer clamped between the surface layers, which not only effectively improves the raw material utilization efficiency, but also improves the processing efficiency by simplifying the processing steps and enhances the use experience.

[0006] The present utility model is achieved in the following way: A sheet material includes a surface layer and a support layer disposed between the surface layers. The support layer includes bamboo slices arranged side by side in the same direction. The bamboo slices are obtained by axially slicing a raw bamboo pole with a circular cross-section. The bamboo slices have connection surfaces for bonding with the corresponding surface layers. The raw bamboo pole is sliced to form bamboo slices with connection surfaces. The bamboo slices are arranged side by side to form a support layer clamped between the surface layers. When the raw bamboo pole is sliced to form bamboo slices, a flat connection surface is formed using the cut, which is convenient for bonding with the surface layer. There is no need to perform cutting processing on the bamboo slices, ensuring that the bamboo green, bamboo yellow, and bamboo septum on the raw bamboo pole can all be utilized, effectively improving the raw material utilization efficiency, reducing the raw material cost. At the same time, a connection surface can be formed synchronously during the cutting to obtain bamboo slices, effectively simplifying the processing steps, improving the processing efficiency, reducing the labor cost and equipment cost, and effectively enhancing the user experience.

[0007] Preferably, the connection surfaces include an upper connection surface and a lower connection surface respectively disposed on the top and bottom surfaces of the bamboo slice. Both the upper connection surface and the lower connection surface are flat surfaces, so that the upper connection surface and the lower connection surface are closely attached and adhesively fixed to the corresponding surface layers. The bamboo slice is adhesively fixed to the surface layer covering the top surface of the support layer through the flat upper connection surface, and adhesively fixed to the surface layer covering the bottom surface of the support layer through the flat lower connection surface. This not only ensures that the surface layers are spaced apart, effectively increasing the thickness of the sheet material, but also improves the adhesion strength by increasing the bonding area between the bamboo slice and the surface layer, preventing the separation between the surface layer and the support layer.

[0008] Preferably, the upper connection surface and the lower connection surface are arranged parallel to each other. The support layer has a flat top surface and a flat bottom surface that can be adhesively bonded to the corresponding surface layers, so that the surface layer is adhesively bonded to the support layer and remains parallel. The upper connection surface and the lower connection surface of the bamboo slice form the top surface and the bottom surface of the support layer. The bamboo slices have the same thickness and the upper connection surface and the lower connection surface are arranged parallel to each other, making the top surface and the bottom surface of the support layer parallel to each other, ensuring that the surface layers attached to the top surface and the bottom surface of the support layer are parallel to each other, and thus ensuring that the thickness of the sheet material is uniform and flat.

[0009] Preferably, the upper connection surface and the lower connection surface are formed synchronously when the bamboo slice is cut. The raw bamboo pole is cut into sheet-shaped bamboo slices by two parallel knives, and the upper connection surface and the lower connection surface are synchronously formed using the cuts formed by the knives. This not only completes the cutting process of the bamboo slice but also completes the processing process of the upper connection surface and the lower connection surface, improving the processing efficiency by simplifying the process.

[0010] Preferably, the upper connection surface and the lower connection surface can be subjected to secondary machining after being cut. The upper connection surface and the lower connection surface are subjected to secondary machining to improve the flatness accuracy, thereby facilitating the bonding with the surface layer.

[0011] Preferably, the surface layer is a wood-based panel, a metal plate, an inorganic plate or a plastic plate. By using plates of different materials, a differentiated user experience can be obtained. The surface layer not only serves to block the support layer but also plays a decorative role, ensuring the aesthetics of the board.

[0012] Preferably, the raw bamboo pole includes bamboo green, bamboo yellow and bamboo diaphragms. The bamboo green refers to the outer layer of the raw bamboo pole, the bamboo yellow refers to the inner layer of the raw bamboo pole, and the bamboo diaphragms are used to divide the raw bamboo pole to form bamboo node cavities. During use, the bamboo green, bamboo yellow and bamboo diaphragms are all retained after being cut into bamboo slices. This not only effectively utilizes the bamboo green, bamboo yellow and bamboo diaphragms to enhance the structural strength of the support layer but also improves the raw material utilization efficiency by reducing waste raw materials and lowers the raw material cost.

[0013] Preferably, the raw bamboo pole is cut into at least two bamboo slices by flat-layer cutting, and the bamboo slices are provided with bamboo diaphragms arranged along their length directions. The raw bamboo pole with a circular cross-section can form at least two bamboo slices during slicing, which not only ensures that the heights of the bamboo slices are the same and meet the usage requirements but also effectively improves the raw material utilization efficiency. During cutting, the bamboo diaphragms are also cut synchronously and are perpendicular to the length direction of the bamboo slices, effectively enhancing the structural strength of the bamboo slices.

[0014] Preferably, the bamboo slice includes an arc-shaped slice, and the cross-sectional contour of the arc-shaped slice is an arc containing a cavity. The top and bottom of the raw bamboo pole are cut to form the arc-shaped slice, and the top and bottom surfaces of the middle section of the arc-shaped slice respectively form the upper connecting surface and the lower connecting surface. The top and bottom of the raw bamboo pole are horizontally cut to form arc-shaped slices, and the upper connecting surface and the lower connecting surface are formed synchronously during cutting, achieving the purpose of obtaining arc-shaped slices and forming the upper connecting surface and the lower connecting surface in one cut, effectively simplifying the processing steps and reducing the processing cost.

[0015] Preferably, the bamboo slice includes a plate-shaped slice, and the plate-shaped slice is formed from the area of the raw bamboo pole between the arc-shaped slices. The plate-shaped slice includes two symmetrically arranged long rods and bamboo diaphragms straddling between the long rods. The long rods and the bamboo diaphragms enclose a cavity, and the top and bottom surfaces of the long rods respectively form the upper connecting surface and the lower connecting surface. For raw bamboo poles with a larger diameter, when the top and bottom of the raw bamboo pole are respectively cut to form arc-shaped slices, the middle part of the raw bamboo pole can also be used to cut into plate-shaped slices. The plate-shaped slice includes two parallel long rods and bamboo diaphragms connecting the long rods, and has flat upper and lower connecting surfaces, which are convenient for fitting and adhering to the surface layer.

[0016] Preferably, the plate-shaped pieces and the arc-shaped pieces have the same thickness, and the plate-shaped pieces and the arc-shaped pieces are arranged side by side and mixed to form the support layer. The arc-shaped pieces and the plate-shaped pieces are joined together by a mixed arrangement to form the support layer, effectively improving the utilization efficiency of raw materials.

[0017] Preferably, the plate-shaped pieces have the same thickness, and the plate-shaped pieces are arranged side by side to form the support layer. The plate-shaped pieces are generated synchronously when the arc-shaped pieces are obtained by cutting the original bamboo pole. The thickness of the plate-shaped pieces will vary with the diameter difference of the original bamboo pole. The support layer is formed by joining the plate-shaped pieces, so that the plate-shaped pieces and the arc-shaped pieces can have different thicknesses. By reducing the thickness of the plate-shaped pieces, the material selection requirements for the thickness of the plate-shaped pieces can be reduced, and thus more plate-shaped pieces can be used, effectively improving the utilization efficiency of raw materials. When obtaining two arc-shaped pieces from the original bamboo pole, multiple plate-shaped pieces can be processed according to the thickness of the remaining part in the middle, thereby improving the utilization efficiency of raw materials.

[0018] Preferably, the arc-shaped pieces have the same thickness, and the arc-shaped pieces are arranged side by side to form the support layer. The arc-shaped pieces are cut to obtain a preset thickness, which is convenient for processing to form a support layer with a preset thickness.

[0019] Preferably, the support layer has at least two layers, and the bamboo split pieces between adjacent support layers have different setting directions. The support layer has multiple layers, and the bamboo split pieces between adjacent support layers have different setting directions. This not only improves the structural strength of the support layer by setting different directions of the bamboo split pieces, but also reduces the thickness requirements for each support layer by increasing the number of support layers, thereby effectively utilizing various bamboo split pieces formed by cutting the original bamboo pole piece layer and improving the utilization efficiency of raw materials.

[0020] Preferably, the original bamboo pole is provided with bamboo node cavities that are distributed along its length direction and separated by bamboo diaphragms. The bamboo node cavities are divided to form cavities located in the bamboo split pieces when the bamboo split pieces are processed. There are cavities in the bamboo split pieces, and the bamboo split pieces use their own structural strength to maintain the cavity contour. This not only ensures that the board has good structural strength, but also can reduce the weight of the board by reserving cavities, which is convenient for transportation and use.

[0021] The beneficial effects of the present utility model are as follows: The original bamboo pole is cut into bamboo split pieces with connecting surfaces through layer cutting. The bamboo split pieces are arranged side by side to form a support layer clamped between the surface layers. When the original bamboo pole is cut into bamboo split pieces, a flat connecting surface is formed by using the cut, which is convenient for fitting and adhering to the surface layer. This not only eliminates the need for cutting and processing of the bamboo split pieces, ensures that the bamboo green, bamboo yellow, and bamboo diaphragms on the original bamboo pole can be utilized, effectively improves the utilization efficiency of raw materials and reduces the raw material cost, but also can synchronously process a connecting surface when cutting the bamboo split pieces, effectively simplifies the processing steps, improves the processing efficiency, reduces the labor cost and equipment cost, and effectively improves the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional structure diagram of the said sheet material;

[0023] Figure 2 is a schematic structure diagram of the said sheet material;

[0024] Figure 3 is a schematic cross-sectional structure diagram when the said raw bamboo pole is sliced by layers;

[0025] Figure 4 is a schematic structure diagram of the said arc-shaped sheet;

[0026] Figure 5 is a schematic structure diagram of the said plate-shaped sheet;

[0027] Figure 6 is a schematic cross-sectional assembly structure diagram of the support layer described in Structure One;

[0028] Figure 7 is a schematic assembly structure diagram of the support layer described in Structure One;

[0029] Figure 8 is a schematic cross-sectional assembly structure diagram of the support layer described in Structure Two;

[0030] Figure 9 is a schematic assembly structure diagram of the support layer described in Structure Two;

[0031] Figure 10 is a schematic cross-sectional assembly structure diagram of the support layer described in Structure Three;

[0032] Figure 11 is a schematic assembly structure diagram of the support layer described in Structure Three;

[0033] In the figure: 1. Surface layer, 2. Support layer, 3. Bamboo slice, 4. Bamboo cross partition, 5. Upper connection surface, 6. Lower connection surface, 7. Plate-shaped sheet, 8. Cavity, 9. Arc-shaped sheet. Specific embodiments

[0034] The following further explains the substantial features of the present utility model in conjunction with the accompanying drawings of the specification and specific embodiments.

[0035] Such as Figure 1 and 2A kind of board shown in the figure is composed of a surface layer 1 and a support layer 2 arranged between the surface layers 1. The support layer 2 includes bamboo slices 3 arranged side by side in the same direction. The bamboo slices 3 are obtained by axially slicing a raw bamboo pole with a circular cross-section. The bamboo slices 3 have connecting surfaces for bonding with the corresponding surface layer 1. The raw bamboo pole forms bamboo slices 3 with connecting surfaces through slicing. The bamboo slices 3 are arranged side by side to form a support layer 2 clamped between the surface layers 1. When the raw bamboo pole is cut to form the bamboo slices 3, a flat connecting surface is formed by using the cut, which is convenient for bonding with the surface layer 1. There is no need to perform cutting processing on the bamboo slices 3, ensuring that the bamboo green, bamboo yellow, and bamboo septum 4 on the raw bamboo pole can all be utilized, effectively improving the raw material utilization efficiency, reducing the raw material cost, and also being able to synchronously process and form the connecting surface when cutting to obtain the bamboo slices 3, effectively simplifying the processing steps, improving the processing efficiency, reducing the labor cost and equipment cost, and effectively enhancing the use experience.

[0036] In actual operation, the connecting surface includes an upper connecting surface 5 and a lower connecting surface 6 respectively arranged on the top and bottom surfaces of the bamboo slice 3. Both the upper connecting surface 5 and the lower connecting surface 6 are flat surfaces, so that the upper connecting surface 5 and the lower connecting surface 6 are closely attached to and adhesively fixed to the corresponding surface layer 1. The bamboo slices 3 and the surface layer 1 are independently processed and assembled and adhered to form a board. Specifically, the bamboo slices 3 are obtained by axially slicing a raw bamboo pole with a circular cross-section, and the upper connecting surface 5 and the lower connecting surface 6 are synchronously formed when cutting to form the bamboo slices 3. During processing, the raw bamboo pole with a circular cross-section is axially sliced by parallel blades (as Figure 3 shown). When obtaining the bamboo slices 3, the upper connecting surface 5 and the lower connecting surface 6 are obtained by using the blades to cut, so that the raw bamboo pole can be directly used for board processing after one cut, which not only effectively simplifies the processing steps, reduces the labor cost and equipment cost, but also effectively reduces the waste raw materials, effectively improves the raw material utilization efficiency, and reduces the raw material cost.

[0037] In actual operation, the raw bamboo pole includes a body with a circular cross-section and bamboo node cavities arranged along the length direction of the body and separated by the bamboo septum 4. The bamboo node cavities are divided to form cavities 8 located in the bamboo slices 3 when processing to form the bamboo slices 3. The outer surface of the body is provided with bamboo green, and the inner surface is provided with bamboo yellow. The periphery of the bamboo septum 4 is connected to the bamboo yellow. During cutting, the bamboo green, bamboo yellow, and bamboo septum 4 are cut and used together with the body. The raw bamboo pole is obtained by cutting down bamboo and removing the branches and leaves.

[0038] In actual operation, the blades on the cutting device are arranged parallel to each other. They can not only cut bamboo slices 3 that meet the preset thickness requirements, but also simultaneously form an upper connecting surface 5 and a lower connecting surface 6 that are parallel to each other. This enables the bamboo slices 3 to ensure that the support layer 2 has a flat top surface and a flat bottom surface that can be adhesively connected to the corresponding surface layer 1 during assembly. Furthermore, it ensures that the surface layers 1 attached to the top surface and the bottom surface of the support layer 2 are flat and parallel to each other. During processing, the top edge and the bottom edge of the original bamboo pole will be cut and discarded due to the formation of the arc-shaped pieces 9 on the upper connecting surface 5, and the rest of the original bamboo pole will be fully utilized to form at least two bamboo slices 3.

[0039] In actual operation, due to the differences in the diameters of the original bamboo poles, in order to effectively utilize the raw materials, the bamboo slices 3 will have different structures according to the different processing parts of the original bamboo poles. The original bamboo poles are cut by flat layers to form at least two bamboo slices 3, and include two structures: arc-shaped pieces 9 and plate-shaped pieces 7. Specifically, when the diameter of the original bamboo pole is small, the upper part and the lower part of the original bamboo pole are respectively processed into arc-shaped pieces 9; when the diameter of the original bamboo pole is large, its top and bottom are processed into arc-shaped pieces 9, and the middle region between the top and the bottom is processed into plate-shaped pieces 7. When the diameter of the original bamboo pole is large or the preset thickness of the bamboo slice 3 is small, by increasing the number of plate-shaped pieces 7, the middle region of the original bamboo pole can be effectively utilized, thereby improving the utilization efficiency of the raw materials. All of these should be regarded as specific embodiments of the present invention.

[0040] In actual operation, the bamboo slice 3 includes an arc-shaped piece 9 (as Figure 4 shown), the cross-sectional contour of the arc-shaped piece 9 is an arc containing a cavity 8. The top and bottom of the original bamboo pole are cut to form the arc-shaped piece 9. The top surface and the bottom surface of the middle section of the arc-shaped piece 9 respectively form the upper connecting surface 5 and the lower connecting surface 6. The arc-shaped piece 9 is formed by processing the arc-shaped areas at the top and bottom of the original bamboo pole. The middle part of the arc-shaped piece 9 bulges upward to form a cavity 8. The upper surface of the middle part of the arc-shaped piece 9 facing upward forms the upper connecting surface 5, and the lower end surfaces of both ends facing downward form the lower connecting surface 6.

[0041] In actual operation, the bamboo slice 3 includes a plate-shaped piece 7 (as Figure 5 shown). The plate-shaped piece 7 is formed from the area of the original bamboo pole located between the arc-shaped pieces 9. The plate-shaped piece 7 includes two symmetrically arranged long rods and a bamboo cross partition 4 bridging between the long rods. The long rods and the bamboo cross partition 4 enclose a cavity 8. The top surface and the bottom surface of the long rods respectively form the upper connecting surface 5 and the lower connecting surface 6. The plate-shaped piece includes two corresponding long rods and a bamboo cross partition 4 bridging between the long rods. The top surface and the bottom surface of the long rods respectively form the upper connecting surface 5 and the lower connecting surface 6.

[0042] In actual operation, the surface layer 1 is bonded to the top and bottom surfaces of the support layer 2 by glue, and the glue not only plays a role of bonding and fixing, but also effectively fills the gap between the support layer 2 and the surface layer 1, thereby playing a role of fixing and positioning the adjacent bamboo slices 3. The support layer 2 can have a variety of structures, including but not limited to the following structures:

[0043] Structure 1, such as Figure 6 and 7 As shown, the support layer 2 is formed by splicing arc-shaped sheets 9 of equal thickness. The arc-shaped sheets 9 are cut to form the same thickness, and the arc-shaped sheets 9 are arranged in parallel to form the support layer 2. The cavities 8 in the arc-shaped sheets 9 are all exposed downward, the upper connection surfaces 5 of the arc-shaped sheets 9 are spliced to form the flat top surface of the support layer 2, and the lower connection surfaces 6 of the arc-shaped sheets 9 are spliced to form the flat bottom surface of the support layer 2.

[0044] Structure 2, such as Figure 8 and 9 As shown, the support layer 2 is formed by splicing the waiting arc-shaped sheets 9, the arc-shaped sheets 9 are formed to have the same thickness by cutting, and the arc-shaped sheets 9 are arranged side by side to form the support layer 2, and the cavities 8 of adjacent arc-shaped sheets 9 are oriented in opposite directions, so that the adjacent arc-shaped sheets 9 are spliced by flipping at intervals. The upper connecting surface 5 and the lower connecting surface 6 of the adjacent arc-shaped sheets 9 are spliced to form the flat top and bottom surfaces of the support layer 2, and the adjacent arc-shaped sheets 9 are limited by the arc-shaped area of the outer surface located between the upper connecting surface 5 and the lower connecting surface 6, which effectively improves the structural strength. The sum of the areas of the upper connecting surface 5 of the plate-shaped sheet 7 corresponds to the sum of the areas of the lower connecting surface 6, ensuring that the top and bottom surfaces of the support layer 2 have a balanced connection strength with the corresponding surface layer 1.

[0045] Structure three, such as Figure 10 and 11 As shown, the support layer 2 is formed by splicing together plate-like sheets 7 of equal thickness. The plate-like sheets 7 have the same thickness, and the plate-like sheets 7 are arranged in parallel to form the support layer 2. The sum of the areas of the upper connection surfaces 5 of the plate-like sheets 7 corresponds to the sum of the areas of the lower connection surfaces 6, ensuring that the top and bottom surfaces of the support layer 2 have a balanced connection strength with the corresponding surface layer 1. In addition, the use of the plate-like sheets 7 alone to process the support layer 2 also has the advantage of independently setting the thickness. Due to the difference in diameters of different native bamboo poles, the thickness of the plate-like sheets 7 is reduced to facilitate the cutting of the middle area of the native bamboo pole to form multiple plate-like sheets 7, thereby effectively utilizing the raw materials and avoiding the waste of the remaining raw materials due to thickness not meeting the requirements.

[0046] Structure 4: the plate-like sheet 7 and the arc-like sheet 9 have the same thickness, the plate-like sheet 7 and the arc-like sheet 9 are mixed and woven in parallel to form the support layer 2, and the support layer 2 is formed by mixing the plate-like sheet 7 and the arc-like sheet 9.

[0047] In actual operation, the support layer 2 has at least two layers, and the bamboo split pieces 3 between adjacent support layers 2 have different setting directions. The support layer 2 can be any of the above four structures to achieve effective use of raw materials. When stacked, the directions of the bamboo split pieces 3 on adjacent support layers 2 are perpendicular to each other, which is used to solve the problem of poor structural strength in the width direction of the bamboo split pieces 3, thereby ensuring good structural strength in both the transverse and longitudinal directions of the board, and effectively utilizing the tensile strength and compressive strength along the grain.

[0048] In actual operation, the upper connecting surface 5 and the lower connecting surface 6 can be machined secondarily after cutting to improve the flatness. The machining includes milling operations, planing operations, or sanding operations, etc., which should all be regarded as specific embodiments of the present invention.

[0049] In actual operation, the surface layer 1 is a wood-based panel, a metal plate, an inorganic plate, a plastic plate, etc. Obtaining corresponding decorative effects and structural properties by using surface layers 1 with different materials and textures should all be regarded as specific embodiments of the present invention.

[0050] In actual operation, the glue can be a woodworking adhesive such as urea-formaldehyde resin, polyurethane, white latex, etc., which should all be regarded as specific embodiments of the present invention.

Claims

1. A sheet material, comprising a surface layer (1) and a support layer (2) disposed between the surface layers (1), characterized in that, The support layer (2) comprises bamboo slices (3) arranged side by side in the same direction. The bamboo slices (3) are obtained by axially slicing a raw bamboo pole with an annular cross-section. The bamboo slices (3) have connecting surfaces for adhering and bonding to the corresponding surface layer (1).

2. The sheet material according to claim 1, wherein The connecting surfaces include an upper connecting surface (5) and a lower connecting surface (6) respectively disposed on the top and bottom surfaces of the bamboo slice (3). Both the upper connecting surface (5) and the lower connecting surface (6) are flat surfaces, so that the upper connecting surface (5) and the lower connecting surface (6) are closely attached to and adhesively fixed to the corresponding surface layer (1).

3. A sheet according to claim 2, characterized in that, The upper connecting surface (5) and the lower connecting surface (6) are arranged parallel to each other. The support layer (2) has a flat top surface and a bottom surface that can be adhered and bonded to the corresponding surface layer (1), so that the surface layer (1) is adhered and bonded to the support layer (2) and remains parallel.

4. A sheet according to claim 2, characterized in that The upper connecting surface (5) and the lower connecting surface (6) are formed synchronously when the bamboo slice (3) is cut; alternatively, the upper connecting surface (5) and the lower connecting surface (6) can be subjected to secondary machining after being cut.

5. A sheet according to claim 2, wherein, The surface layer (1) is a man-made board, a metal plate, an inorganic board or a plastic plate; alternatively, the raw bamboo pole includes bamboo green, bamboo yellow and bamboo septum (4).

6. A sheet according to any one of claims 2-5, characterized in that, The raw bamboo pole is cut into at least two bamboo slices (3) by flat-layer cutting. The bamboo slices (3) are provided with bamboo septum (4) arranged along their length directions.

7. A sheet according to claim 6, characterized in that The bamboo slice (3) includes an arc-shaped slice (9). The cross-sectional contour of the arc-shaped slice (9) is an arc containing a cavity (8). The top and bottom of the raw bamboo pole are cut to form the arc-shaped slice (9). The upper connecting surface (5) and the lower connecting surface (6) are respectively formed on the top and bottom surfaces of the middle section of the arc-shaped slice (9).

8. A sheet according to claim 7, characterized in that, The bamboo slice (3) includes a plate-shaped slice (7). The plate-shaped slice (7) is formed from the area of the raw bamboo pole located between the arc-shaped slices (9). The plate-shaped slice (7) includes two symmetrically arranged long rods and a bamboo septum (4) spanning between the long rods. The long rods and the bamboo septum (4) enclose a cavity (8). The upper connecting surface (5) and the lower connecting surface (6) are respectively formed on the top and bottom surfaces of the long rods.

9. A sheet according to claim 8, characterized in that, The plate-shaped slice (7) has the same thickness as the arc-shaped slice (9). The plate-shaped slices (7) and the arc-shaped slices (9) are arranged side by side and mixed to form the support layer (2); alternatively, the plate-shaped slices (7) have the same thickness, and the plate-shaped slices (7) are arranged side by side to form the support layer (2); alternatively, the arc-shaped slices (9) have the same thickness, and the arc-shaped slices (9) are arranged side by side to form the support layer (2); alternatively, the support layer (2) has at least two layers, and the bamboo slices (3) between adjacent support layers (2) have different setting directions.

10. A sheet according to claim 6, wherein The raw bamboo pole is provided with bamboo node cavities that are arranged along its length direction and separated by bamboo septum (4). The bamboo node cavities are divided to form cavities (8) located in the bamboo slices (3) during the processing of forming the bamboo slices (3).

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