Recombinant bamboo composite board and recombinant bamboo paving method

Abstract

The present application provides a recombinant bamboo composite board and a method for laying recombinant bamboo. The recombinant bamboo composite board includes bamboo bundle layers stacked along the thickness direction of itself. The bamboo bundle layers are formed by laying a number of bamboo bundles closely and without overlapping. Each bamboo bundle has a large-end and a small-end, and the thickness of the large-end is greater than that of the small-end. In the same layer of bamboo bundle layers, the lengths of the bamboo bundles are equal and the extending directions of the large-ends are the same. In adjacent layers of bamboo bundle layers, the extending directions of the large-ends of the bamboo bundles are opposite. The bamboo bundle layers include at least four layers of long-sized bamboo bundle layers and at least one layer of short-sized bamboo bundle layers. The lengths of the bamboo bundles in the long-sized bamboo bundle layers are greater than those in the short-sized bamboo bundle layers. The short-sized bamboo bundle layers are sandwiched between the long-sized bamboo bundle layers. Along the thickness direction, the number of long-sized bamboo bundle layers adjacent to the upper surface of the short-sized bamboo bundle layer is even, and the number of long-sized bamboo bundle layers adjacent to the lower surface of the short-sized bamboo bundle layer is even. The density of the recombinant bamboo composite board slab is basically uniform within the entire width range.

Description

Technical Field

[0001] This application relates to the technical field of recombinant bamboo production, and more particularly to a recombinant bamboo composite board and a method for laying recombinant bamboo. Background Art

[0002] The main production process of recombinant bamboo includes: truncating, strip breaking, defibrating, drying, impregnating with glue, laying, and hot pressing into boards, etc. In actual production applications, it is found that the density of the finished product after pressing is often uneven. Especially the problem of uneven density of the slab with a longer size is more prominent. Even if the bamboo bundles are evenly swapped at the head and tail, the density at both ends of the slab will be greater than the density in the middle of the slab. Moreover, even if the bamboo bundles are cross-woven at the head and tail into a bamboo bundle curtain and then laid, the problem of relatively small density in the middle of the slab cannot be fundamentally solved.

[0003] Therefore, it is necessary to provide a recombinant bamboo composite board and a method for laying recombinant bamboo to at least partially solve the above problems. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, a first aspect of this application provides a recombinant bamboo composite board, including bamboo bundle layers stacked along the thickness direction of itself. The bamboo bundle layers are composed of several bamboo bundles closely and non-overlappingly laid flat; the bamboo bundles have a large-end and a small-end, and the thickness of the large-end is greater than the thickness of the small-end;

[0006] In the same layer of bamboo bundle layers, the lengths of the bamboo bundles are equal and the extending directions of the large-ends are the same. In adjacent layers of bamboo bundle layers, the extending directions of the large-ends of the bamboo bundles are opposite;

[0007] The bamboo bundle layer includes at least four long-size bamboo bundle layers and at least one short-size bamboo bundle layer. The length of the bamboo bundles in the long-size bamboo bundle layer is greater than the length of the bamboo bundles in the short-size bamboo bundle layer; wherein,

[0008] The short-size bamboo bundle layer is sandwiched between the long-size bamboo bundle layers. Along the thickness direction, the number of long-size bamboo bundle layers adjacent to the upper surface of the short-size bamboo bundle layer is an even number, and the number of long-size bamboo bundle layers adjacent to the lower surface of the short-size bamboo bundle layer is an even number.

[0009] A recombined bamboo composite board according to the first aspect of the present application ensures the alternating positions of the large ends and small ends of bamboo bundles in each layer by arranging the large ends of adjacent layers of bamboo bundles in opposite extending directions, achieving a balanced thickness of the recombined bamboo composite board. Although the aforementioned long bamboo bundles are evenly arranged with their heads and tails swapped, the density at both ends of the formed slab will be greater than that in the middle of the slab. By sandwiching short-sized layers between long-sized bamboo bundle layers and laying an appropriate amount of short-sized bamboo bundles in the middle of the slab to increase the overall weight of the bamboo bundles in the middle of the slab, it has a certain compensating effect on the density in the middle of the slab, ensuring a more uniform density distribution of the slab, improving the overall stability and strength of the recombined bamboo composite board, and ensuring the balance of the performance and quality of the board.

[0010] Optionally, when the short-sized bamboo bundle layer is set to one layer, the distances from both ends of the bamboo bundles in the short-sized bamboo bundle layer to both ends of the composite board are equal.

[0011] Optionally, the composite board has a first end and a second end arranged oppositely along the length direction.

[0012] When the short-sized bamboo bundle layer is set to multiple layers, in the lowermost short-sized bamboo bundle layer along the thickness direction, the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer close to the first end along the length direction to the first end is a1, and the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer close to the second end along the length direction to the second end is b1.

[0013] In the uppermost short-sized bamboo bundle layer along the thickness direction, the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer close to the first end along the length direction to the first end is a2, and the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer close to the second end along the length direction to the second end is b2, where

[0014] a1 = b2, b1 = a2, and a1 ≠ b1.

[0015] Optionally, the distances from the ends of the bamboo bundles in adjacent layers of the short-sized bamboo bundle layers with two or more layers close to the first end along the length direction are arranged in an arithmetic progression, and the distances from the ends of the bamboo bundles in adjacent layers of the short-sized bamboo bundle layers with two or more layers close to the second end along the length direction are arranged in an arithmetic progression.

[0016] Optionally, the extending directions of the large ends of the bamboo bundles in adjacent short-sized bamboo bundle layers are opposite.

[0017] Optionally, the number of layers of the adjacent long-sized bamboo bundle layers is an even number from 2 to 10.

[0018] Optionally, the length ratio of the bamboo bundles in the long-sized bamboo bundle layer to the bamboo bundles in the short-sized bamboo bundle layer is 10:5 to 10:7; and / or

[0019] In the length direction, the bamboo bundles in the short-sized bamboo bundle layer are located within the range of 1 / 10 to 9 / 10 of the composite board.

[0020] Optionally, the length of the bamboo bundles in the long-sized bamboo bundle layer is 2500 - 3500 mm.

[0021] The second aspect of this application provides a method for laying recombined bamboo, including the following steps:

[0022] First laying step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundles in the first direction to form the first layer;

[0023] Second laying step of the long-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the first layer to obtain the second layer; that is, the large end orientation of the first layer in the long-sized bamboo bundle layer is opposite to that of the second layer.

[0024] First repeating step: Repeat or not repeat the first laying step and the second laying step of the long-sized bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along their thickness directions to obtain the first group of long-sized bamboo bundle layers, and the other end of the large end and the small end of the long-sized bamboo bundles in the uppermost layer of the first group of long-sized bamboo bundle layers faces the first direction;

[0025] Laying step of the short-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the short-sized bamboo bundles in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain the short-sized layer, and the distances from the large end and the small end of the short-sized bamboo bundles to both ends of the length direction of the first group of long-sized bamboo bundle layers are equal;

[0026] Third laying step of the long-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the short-sized layer to obtain the third layer;

[0027] Fourth laying step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the third layer to obtain the fourth layer; that is, the large end orientation of the third layer in the long-sized bamboo bundle layer is opposite to that of the fourth layer.

[0028] Second repetition step: Repeat or not repeat the third paving step and the fourth paving step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions, obtaining a second group of long-sized bamboo bundle layers, and the number of long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers;

[0029] Obtain the paved reconstituted bamboo board blank.

[0030] The third aspect of the present application further provides a reconstituted bamboo paving method, including the following steps:

[0031] First paving step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundle in the first direction to form the first layer;

[0032] Second paving step of the long-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the long-sized bamboo bundle in the first direction on the upper surface of the first layer to obtain the second layer; that is, the large end orientation of the first layer in the long-sized bamboo bundle layer is opposite to the large end orientation of the second layer.

[0033] First repetition step: Repeat or not repeat the first paving step and the second paving step of the long-sized bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along their thickness directions, obtaining a first group of long-sized bamboo bundle layers, and the other end of the large end and the small end of the long-sized bamboo bundle in the uppermost layer of the first group of long-sized bamboo bundle layers faces the first direction;

[0034] First paving step of the short-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the short-sized bamboo bundle in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain the first short-sized layer. The distance from one end of the large end and the small end of the short-sized bamboo bundle to the first end of the length direction of the long-sized bamboo bundle layer is a1, and the distance from the other end of the large end and the small end of the short-sized layer to the second end of the length direction of the long-sized bamboo bundle layer is b1, and a1≠b1;

[0035] Third paving step of the long-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the long-sized bamboo bundle in the first direction on the upper surface of the first short-sized layer to form the third layer;

[0036] Fourth paving step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundle in the first direction on the upper surface of the third layer to obtain the fourth layer; that is, the large end orientation of the third layer in the long-sized bamboo bundle layer is opposite to the large end orientation of the fourth layer.

[0037] Second repeating step: Repeat or not repeat the third laying step and the fourth laying step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions to obtain a second group of long-sized bamboo bundle layers, and the number of long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers;

[0038] Second laying step of the short-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the short-sized bamboo bundle towards the first direction on the upper surface of the second group of long-sized bamboo bundle layers to obtain a second short-sized layer;

[0039] Third repeating step, repeat or not repeat the foregoing steps. The top layer is the nth short-sized layer or the second short-sized layer. The distance from the end of the top short-sized bamboo bundle layer close to the first end to the first end along the length direction is a2, and the distance from the end of the bamboo bundle in the top short-sized bamboo bundle layer close to the second end to the second end along the length direction is b2, and a1≠a2;

[0040] Fifth laying step of the long-sized bamboo bundle layer: Lay the large end of the long-sized bamboo bundle in a direction opposite to the large end direction of the nth short-sized layer or the second short-sized layer, and disperse and evenly lay it on the upper surface of the nth short-sized layer or the second short-sized layer to obtain a fifth layer;

[0041] Sixth laying step of the long-sized bamboo bundle layer: Lay the large end of the long-sized bamboo bundle in the same direction as the large end direction of the nth short-sized layer or the second short-sized layer, and disperse and evenly lay it on the upper surface of the fifth layer to obtain a sixth layer; that is, the large end directions of the fifth layer and the sixth layer in the long-sized bamboo bundle layer are opposite;

[0042] Obtain the paved reconstituted bamboo board blank.

[0043] Optionally, the distance between the end of the top short-sized layer close to the first end and the first end is equal to the distance between the end of the bottom short-sized layer close to the second end and the second end. Brief Description of the Drawings

[0044] The following drawings of the embodiments of the present application are used as a part of the present application to understand the present application. The embodiments of the present application and their descriptions are shown in the drawings to explain the principles of the present application. In the drawings,

[0045] Figure 1 It is a paving schematic diagram of the first embodiment of the present application;

[0046] Figure 2 It is a paving schematic diagram of the second embodiment of the present application;

[0047] Figure 3 It is a paving schematic diagram of the third implementation mode of this application;

[0048] Figure 4 It is a paving schematic diagram of the fourth implementation mode of this application.

[0049] Explanation of Reference Numerals

[0050] 10: Long-sized bamboo bundle layer

[0051] 20: Short-sized bamboo bundle layer Specific implementation mode

[0052] In the following description, a large number of specific details are given to provide a more thorough understanding of this application. However, it is obvious to those skilled in the art that the implementation mode of this application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the implementation mode of this application, some technical features well known in the art are not described.

[0053] In this article, ordinal numbers such as "first" and "second" cited in this application are only identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0054] In this article, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than limiting the absolute positions of these relevant parts.

[0055] In this article, "equal", "same", etc. are not strict mathematical and / or geometric limitations, and also include errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.

[0056] Unless otherwise specified, the numerical ranges in this article include not only the entire range within its two endpoints, but also several sub-ranges included therein.

[0057] This application provides a recombined bamboo composite board, including bamboo bundle layers stacked along the thickness direction of itself. The bamboo bundle layers are formed by tightly and non-overlappingly laying a number of bamboo bundles flat. The recombined bamboo composite board is formed by paving the pre-treated bamboo bundles according to certain rules and then pressing them into shape.

[0058] Due to the taper in the length direction of the bamboo and the thickness difference in the radial direction, the bamboo bundles after defibration have a large-end and a small-end, and the thickness of the large-end is greater than that of the small-end.

[0059] In the present application, in the same bamboo bundle layer of the recombinant bamboo composite board, the lengths of the bamboo bundles are equal and the extending directions of the large-end portions are the same, and in adjacent bamboo bundle layers, the extending directions of the large-end portions of the bamboo bundles are opposite. The bamboo bundle layer includes at least four long-sized bamboo bundle layers 10 and at least one short-sized bamboo bundle layer 20, and the length of the bamboo bundles in the long-sized bamboo bundle layer 10 is greater than the length of the bamboo bundles in the short-sized bamboo bundle layer 20. Among them, the short-sized bamboo bundle layer 20 is sandwiched between the long-sized bamboo bundle layers 10. Along the thickness direction, the number of long-sized bamboo bundle layers 10 adjacent to the upper surface of the short-sized bamboo bundle layer 20 is an even number, and the number of long-sized bamboo bundle layers 10 adjacent to the lower surface of the short-sized bamboo bundle layer 20 is an even number. In this embodiment, the lengths of the bamboo bundles in the same bamboo bundle layer are equal and the extending directions of the large-end portions are the same, while in adjacent bamboo bundle layers, the extending directions of the large-end portions of the bamboo bundles are opposite. By making the extending directions of the large-end portions of adjacent layers of bamboo bundles opposite, it is ensured that the positions of the large-end and small-end portions of each layer of bamboo bundles alternate, and an even thickness of the recombinant bamboo composite board can be achieved. Although the aforementioned long bamboo bundles are evenly arranged with their heads and tails swapped, the density at both ends of the formed slab will be greater than the density in the middle of the slab. By laying an appropriate amount of short-sized bamboo bundles in the middle of the slab to increase the overall weight of the bamboo bundles in the middle of the slab, sandwiching the short-sized bamboo bundle layer 20 between the long-sized bamboo bundle layers 10 has a certain compensating effect on the density in the middle of the slab, ensuring a more uniform density distribution of the slab, improving the overall stability and strength of the recombinant bamboo composite board, and ensuring the balance of the performance and quality of the board.

[0060] In some embodiments of the present application, when the short-sized bamboo bundle layer 20 is set to one layer, the distances from both ends of the bamboo bundles in the short-sized bamboo bundle layer 20 to both ends of the composite board are equal. By ensuring that the distances from both ends of the bamboo bundles in the short-sized bamboo bundle layer 20 to both ends of the composite board are equal, a bamboo bundle area with an even distribution can be formed in the center of the board, improving the overall strength and stability of the board and reducing deformation and cracking caused by the concentration of bamboo bundles in a specific area. The setting of equal distances can promote the uniform transfer of the load in the bamboo bundle layer. By evenly distributing the load, the problem of excessive local bearing pressure on the bamboo bundles can be reduced, thereby improving the compressive and torsional bending resistance of the recombinant bamboo composite board.

[0061] In some embodiments of the present application, the composite board has a first end and a second end that are oppositely arranged along the length direction. When the short-sized bamboo bundle layers 20 are arranged in multiple layers, in the lowermost short-sized bamboo bundle layer 20 along the thickness direction, the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer 20 close to the first end along the length direction to the first end is a1, and the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer 20 close to the second end along the length direction to the second end is b1. In the uppermost short-sized bamboo bundle layer 20 along the thickness direction, the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer 20 close to the first end along the length direction to the first end is a2, and the distance from the end of the bamboo bundle in the short-sized bamboo bundle layer 20 close to the second end along the length direction to the second end is b2, where a1 = b2, b1 = a2, and a1 ≠ b1. This arrangement can make the density of the central region and the edge region of the slab relatively uniform, thereby improving the overall stability and performance of the board.

[0062] On the basis of the above embodiments, the distances from the ends of the bamboo bundles in adjacent layers of the short-sized bamboo bundle layers 20 with two or more layers close to the first end along the length direction are arranged in an arithmetic progression, and the distances from the ends of the bamboo bundles in adjacent layers of the short-sized bamboo bundle layers 20 with two or more layers close to the second end along the length direction are arranged in an arithmetic progression. It can be understood that several long bamboo bundle layers 10 are interposed between adjacent short-sized bamboo bundle layers 20. The adjacent short-sized bamboo bundle layers 20 are arranged in an arithmetic progression along the length direction, or in other words, the short-sized bamboo bundle layers 20 in the upper and lower layers of the long bamboo bundle layer 10 are arranged in central symmetry, avoiding the accumulation of local bamboo bundles and further improving the density uniformity of the central and edge regions of the slab.

[0063] In some embodiments of the present application, the extending directions of the large-end portions of the bamboo bundles in adjacent short-sized bamboo bundle layers 20 are opposite. By making the extending directions of the large-end portions of adjacent layers of bamboo bundles opposite, the balanced thickness of the recombined bamboo composite board can be achieved, ensuring the alternation of the positions of the large-end and small-end portions between the short-sized bamboo bundle layers in the middle, so as to distribute a more uniform thickness and density throughout the board.

[0064] In some embodiments of the present application, the number of layers of the connected long-sized bamboo bundle layers 10 is an even number between 2 and 10.

[0065] In some embodiments of the present application, the length ratio of the bamboo bundles in the long-sized bamboo bundle layer 10 to the bamboo bundles in the short-sized bamboo bundle layer 20 is 10:5 to 10:7.

[0066] In some embodiments of the present application, in the length direction, the bamboo bundles in the short-sized bamboo bundle layer 20 are located within the range of 1 / 10 to 9 / 10 of the composite board.

[0067] In some embodiments of the present application, the length of the bamboo bundles in the long-sized bamboo bundle layer 10 is 2500 - 3500 mm.

[0068] In a preferred embodiment of the present application, the length of the bamboo bundles in the long-sized bamboo bundle layer 10 is 3120 mm, the length of the bamboo bundles in the short-sized bamboo bundle layer 20 is 1930 mm, and the distance between the ends of the bamboo bundles in the first short-sized bamboo bundle layer 20 and the ends of the long-sized bamboo bundle layer 10 is 595 mm.

[0069] The present application also provides a method for laying up reconstituted bamboo, comprising the following steps:

[0070] First laying step of the long-sized bamboo bundle layer: Dispersing and evenly laying one end of the big end and the small end of the long-sized bamboo bundles in a first direction to form a first layer;

[0071] Second laying step of the long-sized bamboo bundle layer: Dispersing and evenly laying the other end of the big end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the first layer to obtain a second layer; that is, the orientation of the big end of the first layer in the long-sized bamboo bundle layer is opposite to the orientation of the big end of the second layer.

[0072] First repeating step: Repeating or not repeating the first laying step and the second laying step of the long-sized bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along their thickness directions to obtain a first group of long-sized bamboo bundle layers, and the other end of the big end and the small end of the long-sized bamboo bundles in the uppermost layer of the first group of long-sized bamboo bundle layers faces the first direction;

[0073] Laying step of the short-sized bamboo bundle layer: Dispersing and evenly laying one end of the big end and the small end of the short-sized bamboo bundles in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain a short-sized layer, and the distances from the big end and the small end of the short-sized bamboo bundles to the two ends of the length direction of the first group of long-sized bamboo bundle layers are equal;

[0074] Third laying step of the long-sized bamboo bundle layer: Dispersing and evenly laying the other end of the big end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the short-sized layer to obtain a third layer;

[0075] Fourth laying step of the long-sized bamboo bundle layer: Dispersing and evenly laying one end of the big end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the third layer to obtain a fourth layer; that is, the orientation of the big end of the third layer in the long-sized bamboo bundle layer is opposite to the orientation of the big end of the fourth layer.

[0076] Second repeating step: Repeating or not repeating the third laying step and the fourth laying step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions to obtain a second group of long-sized bamboo bundle layers, and the number of layers of the long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of layers of the long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers;

[0077] Obtaining the laid-up reconstituted bamboo board blank.

[0078] In this application, the first direction is one direction in the length direction, the second direction is the other direction in the length direction, and the first direction is opposite to the second direction.

[0079] The first implementation mode and the second implementation mode are specific applications of the above paving method.

[0080] The first implementation mode

[0081] S1: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat to obtain the first layer;

[0082] S2: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the first layer to obtain the second layer;

[0083] S3: Place the large-end of the bamboo bundle with a length of 1930 mm facing the limiting device above the second layer, and be located in the middle of the second layer in the length direction, disperse and evenly lay it flat to obtain the third layer;

[0084] S4: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the third layer to obtain the fourth layer;

[0085] S4: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the fourth layer to obtain the fifth layer;

[0086] As Figure 1 shown, a recombined bamboo board blank with five-layer paving is obtained. The recombined bamboo board blank after paving is pressed to obtain a recombined bamboo board with a density of 1.2 g / cm 3 . The weight of the whole board is 103 kg, the length is 3120 mm, the width is 1310 mm, and the thickness is 21 mm.

[0087] The second implementation mode

[0088] S1: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat to obtain the first layer;

[0089] S2: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the first layer to obtain the second layer;

[0090] S3: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the second layer to obtain the third layer;

[0091] S4: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the third layer to obtain the fourth layer;

[0092] S5: Place the bamboo bundle with a length of 1930 mm, with the big end facing the limit device, on the fourth layer, and in the middle of the fourth layer in the length direction, and spread evenly to obtain the fifth layer;

[0093] S6: The small end of the bamboo bundle with a length of 3120 mm is pressed against the limit device and evenly spread on the upper surface of the fifth layer to obtain the sixth layer;

[0094] S7: The big end of the bamboo bundle with a length of 3120 mm is pressed against the limit device and evenly spread on the upper surface of the sixth layer to obtain the seventh layer;

[0095] S8: The small end of the bamboo bundle with a length of 3120 mm is pressed against the limit device and evenly spread on the upper surface of the seventh layer to obtain the eighth layer;

[0096] S9: The big end of the bamboo bundle with a length of 3120 mm is pressed against the limiting device, and the bamboo bundle is evenly spread on the upper surface of the eighth layer to obtain the ninth layer.

[0097] like Figure 2 As shown, a nine-layer reconstituted bamboo slab is obtained. The reconstituted bamboo slab is pressed to obtain a density of 1.2 g / cm 3 The reconstructed bamboo board weighs 157kg, is 3120mm long, 1310mm wide and 32mm thick.

[0098] In the above embodiment, each layer after arrangement can be properly arranged so that the thickness of the bamboo bundles at each location is substantially the same.

[0099] The present application also provides a method for reconstructing bamboo paving, comprising the following steps:

[0100] The first paving step of the long bamboo bundle layer: one end of the large end and the small end of the long bamboo bundle is evenly spread in a first direction to form a first layer;

[0101] The second paving step of the long bamboo bundle layer: the other end of the large end and the small end of the long bamboo bundle are evenly spread on the upper surface of the first layer in a first direction to obtain a second layer; that is, the direction of the large end of the first layer in the long bamboo bundle layer is opposite to the direction of the large end of the second layer;

[0102] The first repeating step: repeating or not repeating the first paving step of the long-size bamboo bundle layer and the second paving step of the long-size bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along the thickness direction thereof to obtain a first group of long-size bamboo bundle layers, wherein the other end of the large end and the small end of the uppermost long-size bamboo bundle in the first group of long-size bamboo bundle layers faces the first direction;

[0103] The first laying step of the short-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the short-sized bamboo bundles in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain the first short-sized layer. The distance from one end of the large end and the small end of the short-sized bamboo bundles to the first end in the length direction of the long-sized bamboo bundle layers is a1, and the distance from the other end of the large end and the small end of the short-sized layer to the second end in the length direction of the long-sized bamboo bundle layers is b1, where a1 ≠ b1;

[0104] The third laying step of the long-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the first short-sized layer, the third layer;

[0105] The fourth laying step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundles in the first direction on the upper surface of the third layer to obtain the fourth layer; that is, the large end orientation of the third layer in the long-sized bamboo bundle layer is opposite to the large end orientation of the fourth layer;

[0106] The second repeating step: Repeat or not repeat the third laying step of the long-sized bamboo bundle layer and the fourth laying step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions to obtain the second group of long-sized bamboo bundle layers. The number of long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers;

[0107] The second laying step of the short-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the short-sized bamboo bundles in the first direction on the upper surface of the second group of long-sized bamboo bundle layers to obtain the second short-sized layer;

[0108] The third repeating step, repeat or not repeat the foregoing steps. The top layer is the nth short-sized layer or the second short-sized layer. The distance from the end of the short-sized bamboo bundle layer closest to the first end in the length direction to the first end is a2, and the distance from the end of the bamboo bundles in the short-sized bamboo bundle layer closest to the second end in the length direction to the second end is b2, where a1 ≠ a2;

[0109] The fifth laying step of the long-sized bamboo bundle layer: Lay the large end of the long-sized bamboo bundles in the direction opposite to the large end orientation of the nth short-sized layer or the second short-sized layer, disperse and evenly lay them on the upper surface of the nth short-sized layer or the second short-sized layer to obtain the fifth layer;

[0110] The sixth laying step of the long-sized bamboo bundle layer: Lay the large end of the long-sized bamboo bundles in the same direction as the large end orientation of the nth short-sized layer or the second short-sized layer, disperse and evenly lay them on the upper surface of the fifth layer to obtain the sixth layer; that is, the large end orientation of the fifth layer in the long-sized bamboo bundle layer is opposite to the large end orientation of the sixth layer;

[0111] Obtain a paved recombinant bamboo board blank.

[0112] In some embodiments of the present application, the distance between the end of the uppermost short-sized layer near the first end and the first end is equal to the distance between the end of the lowermost short-sized layer near the second end and the second end.

[0113] The third and fourth implementation manners are specific applications of the above paving method.

[0114] The third implementation manner

[0115] S1: Press the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat to obtain the first layer;

[0116] S2: Press the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the first layer to obtain the second layer;

[0117] S3: Place the large-end of the bamboo bundle with a length of 1930 mm facing the limiting device on top of the second layer. In the length direction, the distance between its large-end and the limiting device is 400 mm. Disperse and evenly lay it flat to obtain the third layer;

[0118] S4: Press the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the third layer to obtain the fourth layer;

[0119] S5: Press the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the fourth layer to obtain the fifth layer;

[0120] S6: Place the small-end of the bamboo bundle with a length of 1930 mm facing the limiting device on top of the fifth layer. In the length direction, the distance between its large-end and the small-end of the fifth layer of bamboo bundle is 400 mm. Disperse and evenly lay it flat to obtain the sixth layer;

[0121] S7: Press the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the sixth layer to obtain the seventh layer;

[0122] S8: Press the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the seventh layer to obtain the eighth layer;

[0123] As Figure 3 shown, obtain a recombinant bamboo board blank with eight-layer paving. The paved recombinant bamboo board blank is pressed to obtain a recombinant bamboo board with a density of 1.2 g / cm 3 ³. The weight of the whole board is 162 kg, the length is 3120 mm, the width is 1310 mm, and the thickness is 33 mm.

[0124] The fourth implementation method

[0125] S1: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat to obtain the first layer;

[0126] S2: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the first layer to obtain the second layer;

[0127] S3: Place the large-end of the bamboo bundle with a length of 1930 mm facing the limiting device above the second layer. In the length direction, the distance between its large-end and the limiting device is 400 mm. Disperse and evenly lay it flat to obtain the third layer;

[0128] S4: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the third layer to obtain the fourth layer;

[0129] S5: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the fourth layer to obtain the fifth layer;

[0130] S6: Place the small-end of the bamboo bundle with a length of 1930 mm facing the limiting device above the fifth layer. In the length direction, the distances between its two ends and the first end and the second end are 595 mm respectively. Disperse and evenly lay it flat to obtain the sixth layer;

[0131] S7: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the sixth layer to obtain the seventh layer;

[0132] S8: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the seventh layer to obtain the eighth layer;

[0133] S9: Place the large-end of the bamboo bundle with a length of 1930 mm facing the limiting device above the eighth layer. In the length direction, the distance between its small-end and the large-end of the eighth layer of bamboo bundle is 400 mm. Disperse and evenly lay it flat to obtain the ninth layer;

[0134] S10: Place the small-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the ninth layer to obtain the tenth layer;

[0135] S11: Place the large-end of the bamboo bundle with a length of 3120 mm against the limiting device, disperse and evenly lay it flat on the upper surface of the tenth layer to obtain the eleventh layer.

[0136] As Figure 4 shown, a recombined bamboo board blank with eleven layers of paving is obtained. The recombined bamboo board blank after paving is pressed to obtain a density of 1.2 g / cm 3The recombined bamboo board, the weight of the whole board is 211 kg, the length is 3120 mm, the width is 1310 mm, and the thickness is 43 mm.

[0137] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by one of ordinary skill in the technical field of this application. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. Terms such as "arranged" that appear herein can mean either that one component is directly attached to another component or that one component is attached to another component through an intermediate member. Features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0138] This application has been described by the above embodiments, but it should be understood that the above embodiments are only for illustrative and explanatory purposes and are not intended to limit this application to the scope of the described embodiments. Those skilled in the art can understand that according to the teachings of this application, more variations and modifications can be made, and these variations and modifications all fall within the scope claimed by this application.

Claims

1. A recombinant bamboo composite board, characterized in that, It includes bamboo bundle layers stacked along the thickness direction of itself, and the bamboo bundle layers are formed by tightly and non-overlappingly laying a number of bamboo bundles flat; the bamboo bundles have a large-end and a small-end, and the thickness of the large-end is greater than that of the small-end; In the same layer of bamboo bundle layers, the lengths of the bamboo bundles are equal and the extending directions of the large-ends are the same, and in adjacent layers of bamboo bundle layers, the extending directions of the large-ends of the bamboo bundles are opposite; The bamboo bundle layer includes at least four long-size bamboo bundle layers and at least one short-size bamboo bundle layer, and the lengths of the bamboo bundles in the long-size bamboo bundle layer are greater than those of the bamboo bundles in the short-size bamboo bundle layer; wherein, The short-size bamboo bundle layer is sandwiched between the long-size bamboo bundle layers. Along the thickness direction, the number of long-size bamboo bundle layers adjacent to the upper surface of the short-size bamboo bundle layer is an even number, and the number of long-size bamboo bundle layers adjacent to the lower surface of the short-size bamboo bundle layer is an even number; The number of adjacent long-size bamboo bundle layers is an even number between 2 and 10; The length ratio of the bamboo bundles in the long-size bamboo bundle layer to the bamboo bundles in the short-size bamboo bundle layer is 10:5 to 10:7; and / or, in the length direction, the bamboo bundles in the short-size bamboo bundle layer are located within the range of 1 / 10 to 9 / 10 of the composite board; and / or, the length of the bamboo bundles in the long-size bamboo bundle layer is 2500-3500mm.

2. The recombined bamboo composite board according to claim 1, characterized in that, When the short-size bamboo bundle layer is set to one layer, the distances from the two ends of the bamboo bundles in the short-size bamboo bundle layer to the two ends of the composite board are equal.

3. The recombined bamboo composite board according to claim 1, wherein The composite board has a first end and a second end arranged oppositely along the length direction, When the short-size bamboo bundle layer is set to multiple layers, in the lowermost short-size bamboo bundle layer along the thickness direction, the distance from the end of the bamboo bundle in the short-size bamboo bundle layer close to the first end along the length direction to the first end is a1, and the distance from the end of the bamboo bundle in the short-size bamboo bundle layer close to the second end along the length direction to the second end is b1, In the uppermost short-size bamboo bundle layer along the thickness direction, the distance from the end of the bamboo bundle in the short-size bamboo bundle layer close to the first end along the length direction to the first end is a2, and the distance from the end of the bamboo bundle in the short-size bamboo bundle layer close to the second end along the length direction to the second end is b2, wherein, a1 = b2, b1 = a2, and a1 ≠ b1.

4. The recombined bamboo composite board according to claim 3, characterized in that, In adjacent layers of the short-size bamboo bundle layers with two or more layers, the distances from the ends of the bamboo bundles close to the first end along the length direction to the first end are arranged in an arithmetic progression, and the distances from the ends of the bamboo bundles close to the second end along the length direction to the second end in adjacent layers of the short-size bamboo bundle layers with two or more layers are arranged in an arithmetic progression.

5. The recombined bamboo composite board according to claim 1, wherein The extending directions of the large-ends of the bamboo bundles in adjacent short-size bamboo bundle layers are opposite.

6. A method for laying recombined bamboo, which is used to prepare the recombined bamboo composite board as described in claim 1 or 2, is characterized in that, It includes the following steps: First paving step of long-size bamboo bundle layer: Dispersedly and evenly lay one end of the large-end and the small-end of the long-size bamboo bundles towards the first direction as the first layer; Second laying step of long-sized bamboo bundle layer: The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread in the first direction on the upper surface of the first layer to obtain the second layer; First repeating step: Repeat or not repeat the first laying step and the second laying step of the long-sized bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along their thickness directions to obtain the first group of long-sized bamboo bundle layers. The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles in the uppermost layer of the first group of long-sized bamboo bundle layers face the first direction; Laying step of short-sized bamboo bundle layer: One ends of the large-head ends and small-head ends of the short-sized bamboo bundles are evenly spread in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain the short-sized layer. The distances from the large-head ends and small-head ends of the short-sized bamboo bundles to the two end parts in the length direction of the first group of long-sized bamboo bundle layers are equal; Third laying step of long-sized bamboo bundle layer: The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread in the first direction on the upper surface of the short-sized layer to obtain the third layer; Fourth laying step of long-sized bamboo bundle layer: One ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread in the first direction on the upper surface of the third layer to obtain the fourth layer; Second repeating step: Repeat or not repeat the third laying step and the fourth laying step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions to obtain the second group of long-sized bamboo bundle layers. The number of long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers; Obtain the laid recombined bamboo board blank.

7. A method for laying laminated bamboo, which is used to prepare the laminated bamboo composite board according to any one of claims 1, 3 to 5, characterized in that, Including the following steps: First laying step of long-sized bamboo bundle layer: One ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread as the first layer; Second laying step of long-sized bamboo bundle layer: The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread in the first direction on the upper surface of the first layer to obtain the second layer; First repeating step: Repeat or not repeat the first laying step and the second laying step of the long-sized bamboo bundle layer, so that the first layer and the second layer are alternately stacked upward along their thickness directions to obtain the first group of long-sized bamboo bundle layers. The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles in the uppermost layer of the first group of long-sized bamboo bundle layers face the first direction; First laying step of short-sized bamboo bundle layer: One ends of the large-head ends and small-head ends of the short-sized bamboo bundles are evenly spread in the first direction on the upper surface of the first group of long-sized bamboo bundle layers to obtain the first short-sized layer. The distance from one ends of the large-head ends and small-head ends of the short-sized bamboo bundles to the first end part in the length direction of the long-sized bamboo bundle layer is a1, and the distance from the other ends of the large-head ends and small-head ends of the short-sized layer to the second end part in the length direction of the long-sized bamboo bundle layer is b1, and a1≠b1; Third laying step of long-sized bamboo bundle layer: The other ends of the large-head ends and small-head ends of the long-sized bamboo bundles are evenly spread in the first direction on the upper surface of the first short-sized layer, the third layer; Fourth paving step of the long-sized bamboo bundle layer: Disperse and evenly lay one end of the large end and the small end of the long-sized bamboo bundle in the first direction on the upper surface of the third layer to obtain the fourth layer; Second repeating step: Repeat or do not repeat the third paving step and the fourth paving step of the long-sized bamboo bundle layer, so that the third layer and the fourth layer are alternately stacked upward along their thickness directions to obtain a second group of long-sized bamboo bundle layers. The number of long-sized bamboo bundle layers in the second group of long-sized bamboo bundle layers is equal to the number of long-sized bamboo bundle layers in the first group of long-sized bamboo bundle layers; Second paving step of the short-sized bamboo bundle layer: Disperse and evenly lay the other end of the large end and the small end of the short-sized bamboo bundle in the first direction on the upper surface of the second group of long-sized bamboo bundle layers to obtain the second short-sized layer; Third repeating step: Repeat or do not repeat the foregoing steps. The top layer is the nth short-sized layer or the second short-sized layer. The distance from the end of the top short-sized bamboo bundle layer close to the first end to the first end along the length direction is a2, and the distance from the end of the bamboo bundle in the top short-sized bamboo bundle layer close to the second end to the second end along the length direction is b2, and a1≠a2; Fifth paving step of the long-sized bamboo bundle layer: Lay the large end of the long-sized bamboo bundle in the direction opposite to the large end of the nth short-sized layer or the second short-sized layer, and disperse and evenly lay it on the upper surface of the nth short-sized layer or the second short-sized layer to obtain the fifth layer; Sixth paving step of the long-sized bamboo bundle layer: Lay the long-sized bamboo bundle in the same direction as the large end of the nth short-sized layer or the second short-sized layer, and disperse and evenly lay it on the upper surface of the fifth layer to obtain the sixth layer; Obtain the paved reconstituted bamboo board blank.

8. The reconstituted bamboo paving method according to claim 7, wherein The distance between the end of the top short-sized layer close to the first end and the first end is equal to the distance between the end of the bottom short-sized layer close to the second end and the second end.

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