JP6899576B2 - Orthogonal laminated board using bamboo material - Google Patents

Orthogonal laminated board using bamboo material Download PDF

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JP6899576B2
JP6899576B2 JP2016231979A JP2016231979A JP6899576B2 JP 6899576 B2 JP6899576 B2 JP 6899576B2 JP 2016231979 A JP2016231979 A JP 2016231979A JP 2016231979 A JP2016231979 A JP 2016231979A JP 6899576 B2 JP6899576 B2 JP 6899576B2
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正幸 鶴羽
正幸 鶴羽
守 西岡
守 西岡
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株式会社バンブーケミカル研究所
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本発明は、竹材を用いた直交集成板に関する。 The present invention relates to an orthogonal laminated board using bamboo material.

従来、竹材を木材とともに積層した集成材が知られている（例えば、特許文献１）。
また、木材単板をその木材繊維方向を直交させて積層接着してなる直交集成板が知られている（例えば、特許文献２）。 Conventionally, laminated wood in which bamboo material is laminated together with wood is known (for example, Patent Document 1).
Further, an orthogonal laminated wood board formed by laminating and adhering a single wood board with its wood fiber directions orthogonal to each other is known (for example, Patent Document 2).

特開２００１−１３８３０５号公報Japanese Unexamined Patent Publication No. 2001-138305 特開平１１−２４０００１号公報Japanese Unexamined Patent Publication No. 11-240001

しかし、特許文献１に示す集成材には、木材と竹材で構成される集成材であるが、木材と竹材の繊維方向を同一にしているため、繊維方向に対する引張強度や圧縮強度は確保されるものの繊維方向と異なる方向（特に繊維を切り剥がす方向）に対する強度が不足する問題がある。また、特許文献２に示す木材のみで構成される集成材は、木材繊維方向を直交させて積層接着してなる直交集成板であるが、強度に改良の余地がある。 However, although the laminated wood shown in Patent Document 1 is a laminated wood composed of wood and bamboo, since the fiber directions of wood and bamboo are the same, tensile strength and compressive strength with respect to the fiber direction are secured. There is a problem that the strength is insufficient in a direction different from the fiber direction (particularly the direction in which the fiber is cut off). Further, the laminated lumber composed only of wood shown in Patent Document 2 is an orthogonal laminated wood formed by laminating and adhering the wood fibers in orthogonal directions, but there is room for improvement in strength.

本発明の目的は、従来の直交集成板と比較して強度を向上させた直交集成板を提供することで経済性と汎用性を満足させることである。従来の直交集成板よりも強度を向上させた集成板を実現することで、木材の使用量を少なくすることができるため、低コストとなり経済性を満足させることができる。また、従来の直交集成板よりも強度を向上させた集成板を実現することで、厚みを薄くしても全方向の強度が確保できるため、幅広い用途に用いることが可能となり、汎用性を満足させることができる。 An object of the present invention is to satisfy economic efficiency and versatility by providing an orthogonal laminated board having improved strength as compared with a conventional orthogonal laminated board. By realizing a laminated board with higher strength than the conventional orthogonal laminated board, the amount of wood used can be reduced, so that the cost can be reduced and the economic efficiency can be satisfied. In addition, by realizing a laminated board with higher strength than the conventional orthogonal laminated board, strength in all directions can be secured even if the thickness is reduced, so that it can be used in a wide range of applications and satisfies versatility. Can be made to.

上記目的は、平行層（１１、１３）と直交層（１２）を積層接着してからなる直交集成板であって、前記平行層（１１、１３）は、木質の板または木質の小角材で構成される複数の第一の部材（ａ１）と竹質の板または竹質の小角材で構成される複数の第二の部材（ｂ１）を有し、前記第一の部材（ａ１）の木質の繊維方向と前記第二の部材（ｂ１）の竹質の繊維方向が互いに略平行となるように前記第一の部材（ａ１）と前記第二の部材（ｂ１）が接着され、前記第一の部材（ａ１）と前記第一の部材（ａ１）の間に前記第二の部材（ｂ１）を配する、ことを特徴とする直交集成板（１０、２０、３０）によって達成される。 The above object is an orthogonal laminated board formed by laminating and adhering a parallel layer (11, 13) and an orthogonal layer (12), and the parallel layer (11, 13) is a wooden board or a small wooden square timber. It has a plurality of first members (a1) to be composed and a plurality of second members (b1) composed of a bamboo board or a bamboo small square timber, and is made of wood of the first member (a1). The first member (a1) and the second member (b1) are bonded so that the fiber direction of the first member (b1) and the bamboo fiber direction of the second member (b1) are substantially parallel to each other. This is achieved by the orthogonal laminated lumber (10, 20, 30) characterized in that the second member (b1) is arranged between the member (a1) and the first member (a1).

上記目的は、平行層（４１、４２）と直交層（４３）を積層接着してからなる直交集成板であって、竹質の板または竹質の小角材で構成される第一の平行層（４１）と木質の板または木質の小角材で構成される第二の平行層（４２）と竹質の板または竹質の小角材で構成される第一の直交層（４３）を備え、前記第一の平行層（４１）と前記第一の直交層（４３）の間に前記第二の平行層（４２）を配し、前記第一の平行層（４１）が最も外側の表層となる、ことを特徴とする直交集成板（４０）によっても達成される。 The above object is an orthogonal laminated board formed by laminating and adhering parallel layers (41, 42) and orthogonal layers (43), and is a first parallel layer composed of a bamboo board or a bamboo small square timber. (41), a second parallel layer (42) composed of a wooden board or a small wooden square timber, and a first orthogonal layer (43) composed of a bamboo board or a small square timber. The second parallel layer (42) is arranged between the first parallel layer (41) and the first orthogonal layer (43), and the first parallel layer (41) is the outermost surface layer. It is also achieved by the orthogonal laminated board (40), which is characterized in that.

上記目的は、木材で構成された平行層（５１、５３）及び直交層（５２）を積層接着してからなる直交集成板であって、表面に竹の繊維を含有する樹脂ボード（ｃ１）を配する、ことを特徴とする直交集成板（５０）によっても達成される。 The above object is an orthogonal laminated board made by laminating and adhering parallel layers (51, 53) and orthogonal layers (52) made of wood, and a resin board (c1) containing bamboo fibers on its surface. It is also achieved by an orthogonal laminated board (50), characterized in that it is arranged.

上記目的は、竹質の板または竹質の小角材で構成される平行層（６１、６３）と竹質の板または竹質の小角材で構成される直交層（６２）を積層接着してからなる、直交集成板（６０）によっても達成される。 The above purpose is to laminate and bond a parallel layer (61, 63) made of bamboo board or bamboo small square timber and an orthogonal layer (62) made of bamboo board or bamboo small square timber. It is also achieved by an orthogonal laminated board (60) consisting of.

本発明によれば、従来の直交集成板よりも強度を向上させた直交集成板を実現でき、経済性や汎用性を満足させることができる。また、竹資源の有効活用がなされる。 According to the present invention, it is possible to realize an orthogonal laminated board having improved strength as compared with the conventional orthogonal laminated board, and it is possible to satisfy economic efficiency and versatility. In addition, bamboo resources will be used effectively.

本発明の第１の実施形態による直交集成板１０の斜視図である。It is a perspective view of the orthogonal laminated board 10 by 1st Embodiment of this invention. 本発明の第２の実施形態による直交集成板２０の斜視図である。It is a perspective view of the orthogonal laminated board 20 according to the 2nd Embodiment of this invention. 本発明の第３の実施形態による直交集成板３０の斜視図である。It is a perspective view of the orthogonal laminated board 30 according to the 3rd Embodiment of this invention. 本発明の第４の実施形態による直交集成板４０の斜視図である。It is a perspective view of the orthogonal laminated board 40 by 4th Embodiment of this invention. 本発明の第５の実施形態による直交集成板５０の斜視図である。It is a perspective view of the orthogonal laminated board 50 by 5th Embodiment of this invention. 本発明の第６の実施形態による直交集成板６０の斜視図である。It is a perspective view of the orthogonal laminated board 60 according to the 6th Embodiment of this invention.

以下、図１〜図６を用いて、本発明の実施形態による直交集成板（または「直交積層材」ともいう。）を説明する。なお、以下の全ての図面においては、理解を容易にするため、各構成要素の寸法や比率などは適宜異ならせて図示している。 Hereinafter, the orthogonal laminated board (also referred to as “orthogonal laminated wood”) according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6. In all the drawings below, the dimensions and ratios of the constituent elements are appropriately different from each other in order to facilitate understanding.

［第１の実施形態］
図１を用いて、本発明の第１の実施形態による直交集成板を説明する。図１は、直交集成板１０の斜視図である。図１に示すように、直交集成板１０は、平行層１１、直交層１２、及び平行層１３を有し、上からこの順番にこれらを積層接着することで形成される。また、直交集成板１０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [First Embodiment]
An orthogonal laminated board according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a perspective view of the orthogonal laminated board 10. As shown in FIG. 1, the orthogonal laminated board 10 has a parallel layer 11, an orthogonal layer 12, and a parallel layer 13, and is formed by laminating and adhering these in this order from the top. Further, the orthogonal laminated board 10 may have three or more parallel layers or two or more orthogonal layers, and when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

平行層１１、１３のそれぞれは、木材で構成される複数（本実施の形態では３個）の木板ａ１と竹材で構成される複数（本実施の形態では４個）の竹板ｂ１を有する。複数の木板ａ１の木質の繊維方向と複数の竹板ｂ１の竹質の繊維方向のそれぞれが互いに略平行（±４５°の範囲内）となるように複数の木板ａ１と複数の竹板ｂ１を弱軸方向に並べて、木板ａ１の長手方向の端面と竹板ｂ１の長手方向の端面とを接着させ、木板ａ１と木板ａ１の間に竹板ｂ１が配設される。また、木板と竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ１は、複数の小角材で構成されてもよいし、竹板ｂ１は、複数の小角材で構成されてもよい。 Each of the parallel layers 11 and 13 has a plurality of wooden boards a1 composed of wood (three in the present embodiment) and a plurality of bamboo boards b1 composed of bamboo material (four in the present embodiment). The plurality of wood boards a1 and the plurality of bamboo boards b1 are arranged so that the wood fiber directions of the plurality of wood boards a1 and the bamboo fiber directions of the plurality of bamboo boards b1 are substantially parallel to each other (within a range of ± 45 °). Arranged in the weak axis direction, the end face of the wood board a1 in the longitudinal direction and the end face of the bamboo board b1 in the longitudinal direction are adhered to each other, and the bamboo board b1 is arranged between the wood board a1 and the wood board a1. Further, as the adhesive used for adhering the wooden board and the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive and the like are used. Further, the wooden board a1 may be composed of a plurality of small square timbers, and the bamboo board b1 may be made of a plurality of small square timbers.

直交層１２は、木材で構成される複数（本実施の形態では３個）の木板ａ２と竹材で構成される複数（本実施の形態では４個）の竹板ｂ２を有する。複数の木板ａ２の木質の繊維方向と複数の竹板ｂ２の竹質の繊維方向のそれぞれが互いに略平行（±４５°の範囲内）となるように複数の木板ａ２と複数の竹板ｂ２を強軸方向に並べて、木板ａ２の長手方向の端面と竹板ｂ２の長手方向の端面とを接着させ、木板ａ２と木板ａ２の間に竹板ｂ２が配設される。また、木板と竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、直交層１２の木板ａ２の木質の繊維方向、及び竹板ｂ２の竹質の繊維方向は、平行層１１、１３の木板ａ１の木質の繊維方向、及び竹板ｂ１の竹質の繊維方向に対して略直角となるように構成される。また、木板ａ２は、複数の小角材で構成されてもよいし、竹板ｂ２は、複数の小角材で構成されてもよい。 The orthogonal layer 12 has a plurality of wooden boards a2 composed of wood (three in the present embodiment) and a plurality of bamboo boards b2 composed of bamboo material (four in the present embodiment). The plurality of wood boards a2 and the plurality of bamboo boards b2 are arranged so that the wood fiber directions of the plurality of wood boards a2 and the bamboo fiber directions of the plurality of bamboo boards b2 are substantially parallel to each other (within a range of ± 45 °). Arranged in the strong axis direction, the end face of the wood board a2 in the longitudinal direction and the end face of the bamboo board b2 in the longitudinal direction are adhered to each other, and the bamboo board b2 is arranged between the wood board a2 and the wood board a2. Further, as the adhesive used for adhering the wooden board and the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive and the like are used. Further, the wood fiber direction of the wood board a2 of the orthogonal layer 12 and the bamboo fiber direction of the bamboo board b2 are the wood fiber direction of the wood boards a1 of the parallel layers 11 and 13 and the bamboo fiber direction of the bamboo board b1. It is configured to be approximately perpendicular to. Further, the wooden board a2 may be composed of a plurality of small square timbers, and the bamboo board b2 may be made of a plurality of small square timbers.

このように本実施の形態の直交集成板１０は、平行層及び直交層に木板及び竹板が用いられる。本実施の形態の直交集成板１０のように木板及び竹板を用いることで、従来の木材のみで構成される直交集成板に竹の持つ繊維強度（木材と比較して、単位面積当たりの圧縮強度が１〜２倍程度、引張強度が２〜３倍程度、曲げ強度が３倍程度）が付加されるとともに、竹の特性である水分含有時の寸法安定性も向上する。このため、直交集成板１０は、水分を含有し易い場所（例えば、風呂場や台所等）の建材として好適に用いられる。また、本実施の形態の直交集成板１０は、木板と木板の間に竹板が配設されるため、竹板が緩衝材としても機能する。このため、本実施の形態による直交集成板１０によれば、従来の木材のみで構成される直交集成板に比べて、衝撃による耐久性が向上する構成であるとともに曲げ加工等の加工し易さも向上する場合がある。例えば、竹板部分が節として機能するため、竹板の配列を多くすることで曲げ加工がさらに容易になる。また、本実施の形態の直交集成板１０は、木板の端面に竹板が配設されるため、木板に対する防虫効果や抗菌効果もある。また、本実施の形態の直交集成板１０によれば竹板の質量を全体の数％程度以下に抑えても充分に竹の特性を付加することが可能であり経済的である。また、本実施の形態の直交集成板１０は、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, in the orthogonal laminated board 10 of the present embodiment, a wooden board and a bamboo board are used for the parallel layer and the orthogonal layer. By using a wooden board and a bamboo board like the orthogonal laminated board 10 of the present embodiment, the fiber strength (compressive per unit area as compared with wood) possessed by bamboo in the orthogonal laminated board composed only of conventional wood. The strength is about 1 to 2 times, the tensile strength is about 2 to 3 times, and the bending strength is about 3 times), and the dimensional stability when water is contained, which is a characteristic of bamboo, is also improved. Therefore, the orthogonal laminated board 10 is suitably used as a building material in a place (for example, a bathroom, a kitchen, etc.) where water is likely to be contained. Further, in the orthogonal laminated board 10 of the present embodiment, since the bamboo board is arranged between the wooden boards, the bamboo board also functions as a cushioning material. Therefore, according to the orthogonal laminated board 10 according to the present embodiment, the durability due to impact is improved as compared with the conventional orthogonal laminated board made of only wood, and the processing such as bending is easy. May improve. For example, since the bamboo board portion functions as a knot, the bending process becomes easier by increasing the arrangement of the bamboo boards. Further, the orthogonal laminated board 10 of the present embodiment also has an insect repellent effect and an antibacterial effect on the wooden board because the bamboo board is arranged on the end face of the wooden board. Further, according to the orthogonal laminated board 10 of the present embodiment, it is economical because it is possible to sufficiently add the characteristics of bamboo even if the mass of the bamboo board is suppressed to about several% or less of the whole. Further, the orthogonal laminated board 10 of the present embodiment has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

［第２の実施形態］
図２を用いて、本発明の第２の実施形態による直交集成板を説明する。図２は、直交集成板２０の斜視図である。図２に示すように、直交集成板２０は、平行層２１、直交層２２、及び平行層２３を有し、上からこの順番にこれらを積層接着することで形成される。また、直交集成板１０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [Second Embodiment]
An orthogonal laminated board according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a perspective view of the orthogonal laminated board 20. As shown in FIG. 2, the orthogonal laminated board 20 has a parallel layer 21, an orthogonal layer 22, and a parallel layer 23, and is formed by laminating and adhering these in this order from the top. Further, the orthogonal laminated board 10 may have three or more parallel layers or two or more orthogonal layers, and when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

平行層２１、２３のそれぞれは、木材で構成される複数（本実施の形態では３個）の木板ａ１と竹材で構成される複数（本実施の形態では４個）の竹板ｂ１を有する。複数の木板ａ１の木質の繊維方向と複数の竹板ｂ１の竹質の繊維方向のそれぞれが互いに略平行（±４５°の範囲内）となるように複数の木板ａ１と複数の竹板ｂ１を弱軸方向に並べて、木板ａ１の長手方向の端面と竹板ｂ１の長手方向の端面とを接着させ、木板ａ１と木板ａ１の間に竹板ｂ１が配設される。また、木板と竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ１は、複数の小角材で構成されてもよいし、竹板ｂ１は、複数の小角材で構成されてもよい。 Each of the parallel layers 21 and 23 has a plurality of wooden boards a1 composed of wood (three in the present embodiment) and a plurality of bamboo boards b1 composed of bamboo material (four in the present embodiment). The plurality of wood boards a1 and the plurality of bamboo boards b1 are arranged so that the wood fiber directions of the plurality of wood boards a1 and the bamboo fiber directions of the plurality of bamboo boards b1 are substantially parallel to each other (within a range of ± 45 °). Arranged in the weak axis direction, the end face of the wood board a1 in the longitudinal direction and the end face of the bamboo board b1 in the longitudinal direction are adhered to each other, and the bamboo board b1 is arranged between the wood board a1 and the wood board a1. Further, as the adhesive used for adhering the wooden board and the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive and the like are used. Further, the wooden board a1 may be composed of a plurality of small square timbers, and the bamboo board b1 may be made of a plurality of small square timbers.

直交層２２は、木材で構成される複数（本実施の形態では３個）の木板ａ２のみで構成される。複数の木板ａ２の木質の繊維方向が互いに略平行（±４５°の範囲内）となるように木板ａ２を強軸方向に並べて、木板ａ２の長手方向の端面同士を接着する。また、木板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、直交層２２の木板ａ２の木質の繊維方向は、平行層２１、２３の木板ａ１の木質の繊維方向、及び竹板ｂ１の竹質の繊維方向に対して略直角となるように構成される。また、木板ａ２は、複数の小角材で構成されてもよい。 The orthogonal layer 22 is composed of only a plurality of (three in the present embodiment) wooden boards a2 made of wood. The wood boards a2 are arranged in the strong axis direction so that the wood fiber directions of the plurality of wood boards a2 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the wood boards a2 in the longitudinal direction are bonded to each other. Further, as the adhesive used for adhering the wooden board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wood fiber direction of the wood board a2 of the orthogonal layer 22 is configured to be substantially perpendicular to the wood fiber direction of the wood boards a1 of the parallel layers 21 and 23 and the bamboo fiber direction of the bamboo board b1. Orthogonal. Further, the wooden board a2 may be composed of a plurality of small square timbers.

このように本実施の形態の直交集成板２０は、平行層に木板及び竹板が用いられ、直交層には木板のみが用いられる。本実施の形態の直交集成板２０は、第１の実施の形態の直交集成板１０に比べて、竹板の量を少なくすることができ経済的である。また、本実施の形態の直交集成板２０は、１方向（例えば長手方向）の強度を優先するような用途において特に好適である。また、本実施の形態の直交集成板２０によれば竹板の質量を全体の数％程度以下に抑えても充分に竹の特性を付加することが可能であり経済的である。また、本実施の形態の直交集成板２０は、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, in the orthogonal laminated board 20 of the present embodiment, a wooden board and a bamboo board are used for the parallel layer, and only the wooden board is used for the orthogonal layer. The orthogonal laminated board 20 of the present embodiment is economical because the amount of bamboo boards can be reduced as compared with the orthogonal laminated board 10 of the first embodiment. Further, the orthogonal laminated board 20 of the present embodiment is particularly suitable for applications in which strength in one direction (for example, the longitudinal direction) is prioritized. Further, according to the orthogonal laminated board 20 of the present embodiment, it is economical because it is possible to sufficiently add the characteristics of bamboo even if the mass of the bamboo board is suppressed to about several% or less of the whole. Further, the orthogonal laminated board 20 of the present embodiment has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

［第３の実施形態］
図３を用いて、本発明の第３の実施形態による直交集成板を説明する。図３は、直交集成板３０の斜視図である。図３に示すように、直交集成板３０は、平行層３１、直交層３２、及び平行層３３を有し、上からこの順番にこれらを積層接着することで形成される。また、直交集成板３０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [Third Embodiment]
An orthogonal laminated board according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a perspective view of the orthogonal laminated board 30. As shown in FIG. 3, the orthogonal laminated board 30 has a parallel layer 31, an orthogonal layer 32, and a parallel layer 33, and is formed by laminating and adhering these in this order from the top. Further, the orthogonal laminated board 30 may have three or more parallel layers or two or more orthogonal layers, and when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

平行層３１、３３のそれぞれは、木材で構成される複数（本実施の形態では３個）の木板ａ１と竹材で構成される複数（本実施の形態では４個）の竹板ｂ１を有する。複数の木板ａ１の木質の繊維方向と複数の竹板ｂ１の竹質の繊維方向のそれぞれが互いに略平行（±４５°の範囲内）となるように複数の木板ａ１と複数の竹板ｂ１が弱軸方向に並べられる。また、平行層３１、３３は、木板ａ１の長手方向の端面と竹板ｂ１の長手方向の端面とを接着する箇所と木板ａ１の長手方向の端面同士を接着する箇所と竹板ｂ１の長手方向の端面同士を接着する箇所とを有している。このため、平行層３１、３３は、木板ａ１と木板ａ１の間に竹板ｂ１が配設される箇所と木板ａ１と木板ａ１の間に竹板ｂ１が配設されない箇所とを有することになる。また、木板や竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ１は、複数の小角材で構成されてもよいし、竹板ｂ１は、複数の小角材で構成されてもよい。 Each of the parallel layers 31 and 33 has a plurality of wooden boards a1 composed of wood (three in the present embodiment) and a plurality of bamboo boards b1 composed of bamboo material (four in the present embodiment). The plurality of wood boards a1 and the plurality of bamboo boards b1 are arranged so that the wood fiber directions of the plurality of wood boards a1 and the bamboo fiber directions of the plurality of bamboo boards b1 are substantially parallel to each other (within a range of ± 45 °). Arranged in the weak axis direction. Further, the parallel layers 31 and 33 are a portion where the end face of the wooden board a1 in the longitudinal direction and the end face of the bamboo board b1 in the longitudinal direction are bonded, a portion where the end faces of the wooden board a1 in the longitudinal direction are bonded to each other, and a portion where the end face of the wooden board a1 is bonded in the longitudinal direction and the longitudinal direction of the bamboo board b1. It has a part where the end faces of the above are bonded to each other. Therefore, the parallel layers 31 and 33 have a portion where the bamboo board b1 is arranged between the wooden boards a1 and the wooden board a1 and a portion where the bamboo board b1 is not arranged between the wooden boards a1 and the wooden board a1. .. Further, as the adhesive used for adhering the wooden board or the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wooden board a1 may be composed of a plurality of small square timbers, and the bamboo board b1 may be made of a plurality of small square timbers.

直交層３２は、木材で構成される複数（本実施の形態では３個）の木板ａ２と竹材で構成される複数（本実施の形態では４個）の竹板ｂ２を有する。複数の木板ａ２の木質の繊維方向と複数の竹板ｂ２の竹質の繊維方向のそれぞれが互いに略平行（±４５°の範囲内）となるように複数の木板ａ２と複数の竹板ｂ２が強軸方向に並べられる。また、直交層３２は、木板ａ２の長手方向の端面と竹板ｂ２の長手方向の面とを接着する箇所と木板ａ２の長手方向の端面同士を接着する箇所と竹板ｂ２の長手方向の面同士を接着する箇所とを有している。このため、直交層３２は、木板ａ２と木板ａ２の間に竹板ｂ２が配設される箇所と木板ａ２と木板ａ２の間に竹板ｂ２が配設されない箇所とを有することになる。また、木板や竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ２は、複数の小角材で構成されてもよいし、竹板ｂ２は、複数の小角材で構成されてもよい。また、直交層３２の木板ａ２の木質の繊維方向、及び竹板ｂ２の竹質の繊維方向は、平行層３１、３３の木板ａ１の木質の繊維方向、及び竹板ｂ１の竹質の繊維方向に対して略直角となるように構成される。なお、直交層３２は、木材ａ２のみで構成される場合があってもよい。 The orthogonal layer 32 has a plurality of wooden boards a2 composed of wood (three in the present embodiment) and a plurality of bamboo boards b2 composed of bamboo material (four in the present embodiment). The plurality of wood boards a2 and the plurality of bamboo boards b2 are arranged so that the wood fiber directions of the plurality of wood boards a2 and the bamboo fiber directions of the plurality of bamboo boards b2 are substantially parallel to each other (within a range of ± 45 °). Arranged in the strong axis direction. Further, the orthogonal layer 32 includes a portion where the longitudinal end surface of the wooden board a2 and the longitudinal surface of the bamboo board b2 are bonded, a portion where the longitudinal end faces of the wooden board a2 are bonded to each other, and a longitudinal surface of the bamboo board b2. It has a place to bond each other. Therefore, the orthogonal layer 32 has a portion where the bamboo board b2 is arranged between the wooden boards a2 and the wooden board a2, and a portion where the bamboo board b2 is not arranged between the wooden boards a2 and the wooden board a2. Further, as the adhesive used for adhering the wooden board or the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wooden board a2 may be composed of a plurality of small square timbers, and the bamboo board b2 may be made of a plurality of small square timbers. Further, the wood fiber direction of the wood board a2 of the orthogonal layer 32 and the bamboo fiber direction of the bamboo board b2 are the wood fiber direction of the wood boards a1 of the parallel layers 31 and 33 and the bamboo fiber direction of the bamboo board b1. It is configured to be approximately perpendicular to. The orthogonal layer 32 may be composed of only the wood a2.

このように本実施の形態の直交集成板３０は、平行層及び直交層に木板及び竹板が用いられる。本実施の形態の直交集成板３０のように木板及び竹板を用いることで、従来の木材のみで構成される直交集成板に竹の持つ繊維強度が付加されるとともに、竹の特性である水分含有時の寸法安定性も向上する。このため、直交集成板３０は、水分を含有し易い場所（例えば、風呂場や台所等）の建材として好適に用いられる。また、本実施の形態の直交集成板３０は、木板と木板の間に竹板が配設されるため、竹板が緩衝材としても機能する。このため、本実施の形態による直交集成板３０によれば、従来の木材のみで構成される直交集成板に比べて、衝撃による耐久性が向上する構成であるとともに曲げ加工等の加工し易さも向上する場合がある。また、本実施の形態の直交集成板３０は、木板の端面に竹板が配設されるため、木板に対する防虫効果もある。また、本実施の形態の直交集成板３０によれば竹板の質量を全体の数％程度以下に抑えても充分に竹の特性を付加することが可能であり経済的である。また、本実施の形態の直交集成板３０は、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, in the orthogonal laminated board 30 of the present embodiment, a wooden board and a bamboo board are used for the parallel layer and the orthogonal layer. By using a wooden board and a bamboo board like the orthogonal laminated board 30 of the present embodiment, the fiber strength of bamboo is added to the conventional orthogonal laminated board composed of only wood, and the moisture content which is a characteristic of bamboo is added. Dimensional stability during inclusion is also improved. Therefore, the orthogonal laminated board 30 is suitably used as a building material in a place (for example, a bathroom, a kitchen, etc.) where water is likely to be contained. Further, in the orthogonal laminated board 30 of the present embodiment, since the bamboo board is arranged between the wooden boards, the bamboo board also functions as a cushioning material. Therefore, according to the orthogonal laminated board 30 according to the present embodiment, the durability due to impact is improved as compared with the conventional orthogonal laminated board made of only wood, and the processing such as bending is easy. May improve. Further, the orthogonal laminated board 30 of the present embodiment also has an insect repellent effect on the wooden board because the bamboo board is arranged on the end face of the wooden board. Further, according to the orthogonal laminated board 30 of the present embodiment, it is economical because it is possible to sufficiently add the characteristics of bamboo even if the mass of the bamboo board is suppressed to about several% or less of the whole. Further, the orthogonal laminated board 30 of the present embodiment has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

［第４の実施形態］
図４を用いて、本発明の第４の実施形態による直交集成板を説明する。図４は、直交集成板４０の斜視図である。図４に示すように、直交集成板４０は、平行層４１、直交層４２、及び平行層４３を有し、上からこの順番にこれらを積層接着することで形成される。また、直交集成板４０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [Fourth Embodiment]
An orthogonal laminated board according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view of the orthogonal laminated board 40. As shown in FIG. 4, the orthogonal laminated board 40 has a parallel layer 41, an orthogonal layer 42, and a parallel layer 43, and is formed by laminating and adhering these in this order from the top. Further, the orthogonal laminated board 40 may have three or more parallel layers or two or more orthogonal layers, or when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

平行層４１は、竹材で構成される複数（本実施の形態では６個）の竹板ｂ１のみで構成される。複数の竹板ｂ１の竹質の繊維方向が互いに略平行（±４５°の範囲内）となるように竹板ｂ１を弱軸方向に並べ竹板ｂ１の長手方向の端面同士を接着する。また、竹板ｂ１のみで構成された平行層４１は、最も外側の表層となる。また、竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、竹板ｂ１は、複数の小角材で構成されてもよい。 The parallel layer 41 is composed of only a plurality of bamboo plates (6 in the present embodiment) made of bamboo material. The bamboo plates b1 are arranged in the weak axis direction so that the bamboo fiber directions of the plurality of bamboo plates b1 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the bamboo plates b1 in the longitudinal direction are adhered to each other. Further, the parallel layer 41 composed of only the bamboo plate b1 is the outermost surface layer. Further, as the adhesive used for adhering the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the bamboo board b1 may be composed of a plurality of small square timbers.

平行層４２は、木材で構成される複数（本実施の形態では３個）の木板ａ１のみで構成される。複数の木板ａ１の木質の繊維方向が互いに略平行（±４５°の範囲内）となるように木板ａ１を弱軸方向に並べて、木板ａ１の長手方向の端面同士を接着する。また、木板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ１は、複数の小角材で構成されてもよい。 The parallel layer 42 is composed of only a plurality of (three in the present embodiment) wooden boards a1 made of wood. The wood boards a1 are arranged in the weak axis direction so that the wood fiber directions of the plurality of wood boards a1 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the wood boards a1 in the longitudinal direction are bonded to each other. Further, as the adhesive used for adhering the wooden board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wooden board a1 may be composed of a plurality of small square timbers.

直交層４２は、竹材で構成される複数（本実施の形態では７個）の竹板ｂ２のみで構成される。複数の竹板ｂ２の竹質の繊維方向が互いに略平行（±４５°の範囲内）となるように竹板ｂ２を強軸方向に並べ竹板ｂ２の長手方向の端面同士を接着する。また、竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、直交層４２の竹板ｂ２の竹質の繊維方向は、平行層４１の竹板ｂ１の竹質の繊維方向、及び平行層４２の木板ａ１の木質の繊維方向に対して略直角となるように構成される。また、竹板ｂ２は、複数の小角材で構成されてもよい。なお、直交集成板４０は、表面側と裏面側の層が竹板のみで構成された平行層で構成され、その内側の層は、木板のみで構成された平行層と直交層が積層される構成であってもよい。 The orthogonal layer 42 is composed of only a plurality of bamboo plates (7 in the present embodiment) made of bamboo material. The bamboo plates b2 are arranged in the strong axis direction so that the bamboo fiber directions of the plurality of bamboo plates b2 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the bamboo plates b2 in the longitudinal direction are adhered to each other. Further, as the adhesive used for adhering the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the bamboo fiber direction of the bamboo plate b2 of the orthogonal layer 42 is substantially perpendicular to the bamboo fiber direction of the bamboo plate b1 of the parallel layer 41 and the wood fiber direction of the wood plate a1 of the parallel layer 42. It is configured as follows. Further, the bamboo board b2 may be composed of a plurality of small square timbers. The orthogonal laminated board 40 is composed of parallel layers in which the front surface side and the back surface side are composed of only bamboo boards, and the inner layer is laminated with a parallel layer composed of only wooden boards and an orthogonal layer. It may be a configuration.

このように本実施の形態の直交集成板４０は、平行層に木板及び竹板が用いられ、直交層に竹板が用いられる。本実施の形態の直交集成板４０のように木板及び竹板を用いることで、従来の木材のみで構成される直交集成板に竹の持つ繊維強度が付加されるとともに、竹の特性である水分含有時の寸法安定性も向上する。このため、直交集成板４０は、水分を含有し易い場所（例えば、風呂場や台所等）の建材として好適に用いられる。また、本実施の形態の直交集成板４０は、直交層に竹板のみを用いることで、従来の木材のみで構成される直交集成板に比べて、弱軸方向の強度を維持あるいは強化しつつも全体の軽量化も実現できる。また、本実施の形態の直交集成板４０は、表層が竹板のみで構成されるため、抗菌や消臭効果も奏することになる。また、本実施の形態の直交集成板４０は、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, in the orthogonal laminated board 40 of the present embodiment, a wooden board and a bamboo board are used for the parallel layer, and a bamboo board is used for the orthogonal layer. By using a wooden board and a bamboo board like the orthogonal laminated board 40 of the present embodiment, the fiber strength of bamboo is added to the conventional orthogonal laminated board composed of only wood, and the moisture content which is a characteristic of bamboo is added. Dimensional stability during inclusion is also improved. Therefore, the orthogonal laminated board 40 is suitably used as a building material in a place (for example, a bathroom, a kitchen, etc.) where water is likely to be contained. Further, in the orthogonal laminated board 40 of the present embodiment, by using only bamboo board for the orthogonal layer, the strength in the weak axis direction is maintained or strengthened as compared with the conventional orthogonal laminated board composed of only wood. It is also possible to reduce the overall weight. Further, since the surface layer of the orthogonal laminated board 40 of the present embodiment is composed only of bamboo boards, it also has antibacterial and deodorant effects. Further, the orthogonal laminated board 40 of the present embodiment has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

［第５の実施形態］
図５を用いて、本発明の第５の実施形態による直交集成板を説明する。図５は、直交集成板５０の斜視図である。図５に示すように、直交集成板５０は、平行層５１、直交層５２、及び平行層５３を有し、上からこの順番にこれらを積層接着することで形成される。平行層５１の上面を覆うように竹の繊維を含有する樹脂ボードｃ１を表面層として接着し、平行層５３の下面を覆うように竹の繊維を含有する樹脂ボードｃ１を裏面層として接着している。また、直交集成板５０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [Fifth Embodiment]
An orthogonal laminated board according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a perspective view of the orthogonal laminated board 50. As shown in FIG. 5, the orthogonal laminated board 50 has a parallel layer 51, an orthogonal layer 52, and a parallel layer 53, and is formed by laminating and adhering these in this order from the top. A resin board c1 containing bamboo fibers is adhered as a front surface layer so as to cover the upper surface of the parallel layer 51, and a resin board c1 containing bamboo fibers is adhered as a back surface layer so as to cover the lower surface of the parallel layer 53. There is. Further, the orthogonal laminated board 50 may have three or more parallel layers or two or more orthogonal layers, and when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

表層に用いる竹の繊維を含有する樹脂ボードｃ１は、竹から竹の繊維を取り出し、取り出した竹の繊維を熱硬化性樹脂に混ぜることで形成される。熱硬化性樹脂には、例えば、イソシアネート系、フェノール系、ユリア系、メラミン系、アルキド系等の樹脂を用いてもよい。また、表層に用いる樹脂ボードｃ１は、竹の繊維を絡ませるように構成する。樹脂ボードｃ１は、例えば、１０センチ角に少なくとも１００本以上の竹の繊維が絡ませるように構成されている。また、樹脂ボードｃ１に含有される竹の繊維の本数が多いほどより好適である。また、表層に用いる樹脂ボードｃ１は、竹のチップ（例えば、大きさが５ミリ角〜５０ミリ角のもの）や竹を粉砕した粉末（例えば、大きさが５ミリ角以下のもの）を有する場合があってもよいし、木材（例えばスギ、ヒノキ、スプルース、ファー、ラジアータパイン等の針葉樹や、シラカバ、アピトン、カメレレ、センゴン、ラウト、アスペン等の広葉樹）の繊維や、木のチップ（例えば、大きさが５ミリ角〜５０ミリ角のもの）や木材を粉砕した粉末（例えば、大きさが５ミリ角以下のもの）を有する場合があってもよい。 The resin board c1 containing bamboo fibers used for the surface layer is formed by taking out bamboo fibers from bamboo and mixing the taken out bamboo fibers with a thermosetting resin. As the thermosetting resin, for example, isocyanate-based, phenol-based, urea-based, melamine-based, alkyd-based or the like may be used. Further, the resin board c1 used for the surface layer is configured to entangle bamboo fibers. The resin board c1 is configured such that at least 100 or more bamboo fibers are entwined in, for example, a 10 cm square. Further, the larger the number of bamboo fibers contained in the resin board c1, the more preferable. The resin board c1 used for the surface layer has bamboo chips (for example, those having a size of 5 mm square to 50 mm square) and crushed bamboo powder (for example, those having a size of 5 mm square or less). In some cases, the fibers of wood (eg conifers such as cedar, cypress, spruce, fur, radiata pine, hardwoods such as white birch, apiton, chamelele, sengon, laut, aspen) and wood chips (eg, aspen). , It may have a size of 5 mm square to 50 mm square) or a powder obtained by crushing wood (for example, a size of 5 mm square or less).

平行層５１、５３のそれぞれは、木材で構成される複数（本実施の形態では３個）の木板ａ１のみで構成される。複数の木板ａ１の木質の繊維方向が互いに略平行（±４５°の範囲内）となるように木板ａ１を弱軸方向に並べて、木板ａ１の長手方向の端面同士を接着する。また、木板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、木板ａ１は、複数の小角材で構成されてもよい。 Each of the parallel layers 51 and 53 is composed of only a plurality of (three in the present embodiment) wooden boards a1 made of wood. The wood boards a1 are arranged in the weak axis direction so that the wood fiber directions of the plurality of wood boards a1 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the wood boards a1 in the longitudinal direction are bonded to each other. Further, as the adhesive used for adhering the wooden board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wooden board a1 may be composed of a plurality of small square timbers.

直交層５２は、木材で構成される複数（本実施の形態では３個）の木板ａ２のみで構成される。複数の木板ａ２の木質の繊維方向が互いに略平行（±４５°の範囲内）となるように木板ａ２を強軸方向に並べて、木板ａ２の長手方向の端面同士を接着する。また、木板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、直交層５２の木板ａ２の木質の繊維方向は、平行層５１、５３の木板ａ１の木質の繊維方向に対して略直角となるように構成される。また、木板ａ２は、複数の小角材で構成されてもよい。 The orthogonal layer 52 is composed of only a plurality of (three in the present embodiment) wooden boards a2 made of wood. The wood boards a2 are arranged in the strong axis direction so that the wood fiber directions of the plurality of wood boards a2 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the wood boards a2 in the longitudinal direction are bonded to each other. Further, as the adhesive used for adhering the wooden board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the wood fiber direction of the wood board a2 of the orthogonal layer 52 is configured to be substantially perpendicular to the wood fiber direction of the wood boards a1 of the parallel layers 51 and 53. Further, the wooden board a2 may be composed of a plurality of small square timbers.

このように本実施の形態の直交集成板５０は、表層に竹の繊維を有する樹脂ボードｃ１が用いられる。樹脂ボードｃ１に含有される竹の繊維を絡ませるように構成することで樹脂ボードｃ１の強度を向上させるとともに樹脂ボードｃ１の衝撃による耐久性も向上させている。また、本実施の形態の直交集成板５０は、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, as the orthogonal laminated board 50 of the present embodiment, the resin board c1 having bamboo fibers on the surface layer is used. By entwining the bamboo fibers contained in the resin board c1, the strength of the resin board c1 is improved and the durability of the resin board c1 due to impact is also improved. Further, the orthogonal laminated board 50 of the present embodiment has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

［第６の実施形態］
図６を用いて、本発明の第６の実施形態による直交集成板を説明する。図６は、直交集成板６０の斜視図である。図６に示すように、直交集成板６０は、平行層６１、直交層６２、及び平行層６３を有し、上からこの順番にこれらを積層接着することで形成される。また、直交集成板６０は、３層以上の平行層や２層以上の直交層を有する場合があってもよいし、平行層を連続して積層する場合や直交層を連続して積層する場合があってもよい。なお、各層の積層接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。 [Sixth Embodiment]
An orthogonal laminated board according to a sixth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a perspective view of the orthogonal laminated board 60. As shown in FIG. 6, the orthogonal laminated board 60 has a parallel layer 61, an orthogonal layer 62, and a parallel layer 63, and is formed by laminating and adhering these in this order from the top. Further, the orthogonal laminated board 60 may have three or more parallel layers or two or more orthogonal layers, and when the parallel layers are continuously laminated or when the orthogonal layers are continuously laminated. There may be. As the adhesive used for laminating and adhering each layer, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used.

平行層６１、６３のそれぞれは、竹材で構成される複数（本実施の形態では６個）の竹板ｂ１のみで構成される。複数の竹板ｂ１の竹質の繊維方向が互いに略平行（±４５°の範囲内）となるように竹板ｂ１を弱軸方向に並べ竹板ｂ１の長手方向の端面同士を接着する。また、竹板ｂ１のみで構成された平行層６１、６３は、最も外側の表層となる。また、竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、竹板ｂ１は、複数の小角材で構成されてもよい。 Each of the parallel layers 61 and 63 is composed of only a plurality of bamboo plates (6 in the present embodiment) made of bamboo material. The bamboo plates b1 are arranged in the weak axis direction so that the bamboo fiber directions of the plurality of bamboo plates b1 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the bamboo plates b1 in the longitudinal direction are adhered to each other. Further, the parallel layers 61 and 63 composed of only the bamboo plate b1 are the outermost surface layers. Further, as the adhesive used for adhering the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the bamboo board b1 may be composed of a plurality of small square timbers.

直交層６２は、竹材で構成される複数（本実施の形態では７個）の竹板ｂ２のみで構成される。複数の竹板ｂ２の竹質の繊維方向が互いに略平行（±４５°の範囲内）となるように竹板ｂ２を強軸方向に並べ竹板ｂ２の長手方向の端面同士を接着する。また、竹板の接着に用いる接着剤としては、たんぱく質系接着剤、合成樹脂系接着剤、合成ゴム系接着剤等が用いられる。また、直交層６２の竹板ｂ２の竹質の繊維方向は、平行層６１、６２の竹板ｂ１の竹質の繊維方向に対して略直角となるように構成される。また、竹板ｂ２は、複数の小角材で構成されてもよい。 The orthogonal layer 62 is composed of only a plurality of bamboo plates (7 in the present embodiment) made of bamboo material. The bamboo plates b2 are arranged in the strong axis direction so that the bamboo fiber directions of the plurality of bamboo plates b2 are substantially parallel to each other (within a range of ± 45 °), and the end faces of the bamboo plates b2 in the longitudinal direction are adhered to each other. Further, as the adhesive used for adhering the bamboo board, a protein-based adhesive, a synthetic resin-based adhesive, a synthetic rubber-based adhesive, or the like is used. Further, the bamboo fiber direction of the bamboo plate b2 of the orthogonal layer 62 is configured to be substantially perpendicular to the bamboo fiber direction of the bamboo plate b1 of the parallel layers 61 and 62. Further, the bamboo board b2 may be composed of a plurality of small square timbers.

このように本実施の形態の直交集成板６０は、平行層及び直交層が竹板のみで構成される。本実施の形態の直交集成板６０は、従来の木材のみで構成される直交集成板と比較して強度（圧縮強度、引張強度、曲げ強度等）や水分含有時の寸法安定性も向上するし、衝撃による耐久性が向上するとともに曲げ加工等の加工し易さも向上する。また、防虫効果や消臭効果も奏するし、軽量化を図ることもできる。また、従来の木材のみで構成される直交集成板と外形を同一にすることも容易であるため汎用性も備えている。 As described above, in the orthogonal laminated board 60 of the present embodiment, the parallel layer and the orthogonal layer are composed of only bamboo boards. The orthogonal laminated board 60 of the present embodiment also improves strength (compressive strength, tensile strength, bending strength, etc.) and dimensional stability when water is contained, as compared with the conventional orthogonal laminated board composed of only wood. , Durability due to impact is improved, and ease of processing such as bending is also improved. In addition, it also has an insect repellent effect and a deodorant effect, and can reduce the weight. In addition, it has versatility because it is easy to make the outer shape the same as that of the conventional orthogonal laminated board made of only wood.

また、上述の実施の形態は、本発明の好適な一例であるので、技術的に好ましい種々の限定が付されているが、本発明の範囲は、上述の説明によって不当に限定されるものではない。また、上述の実施の形態で説明される構成の全てが本発明の必須の構成要件ではない。また、上述の実施の形態で説明される構成は相互に付け足したり組み合わせたりしてもよい。付け足しの一例をあげると、第１〜第６の実施の形態（第５の実施の形態を除く）に示した直交集成板において、第５の実施の形態で説明した樹脂ボードｃ１を付け足してもよいし、組み合わせの一例をあげると、第１の実施の形態に示した直交集積板１０において、平行層１１及び／または平行層１３を第３の実施の形態で説明した平行層３１または平行層３２に置換してもよいし、第４の実施の形態で説明した平行層４１または平行層４２に置換してもよい。 Further, since the above-described embodiment is a preferable example of the present invention, various technically preferable limitations are attached, but the scope of the present invention is not unreasonably limited by the above description. Absent. Moreover, not all of the configurations described in the above-described embodiments are essential constituent requirements of the present invention. In addition, the configurations described in the above-described embodiments may be added to or combined with each other. To give an example of addition, even if the resin board c1 described in the fifth embodiment is added to the orthogonal assembly plate shown in the first to sixth embodiments (excluding the fifth embodiment). Alternatively, to give an example of the combination, in the orthogonal stacking plate 10 shown in the first embodiment, the parallel layer 11 and / or the parallel layer 13 is the parallel layer 31 or the parallel layer described in the third embodiment. It may be replaced with 32, or may be replaced with the parallel layer 41 or the parallel layer 42 described in the fourth embodiment.

本発明は、直交集成板において広く利用可能である。 The present invention is widely available in orthogonal laminated boards.

１０、２０、３０、４０、５０、６０ 直交集成板
１１、１３、２１、２３、３１、３３、４１、４３、５１、５３、６１、６３ 平行層
１２、２２、３２、４２、５２、６２ 直交層
ａ１、ａ２ 木板
ｂ１、ｂ２ 竹板
ｃ１ 樹脂ボード 10, 20, 30, 40, 50, 60 Orthogonal laminated boards 11, 13, 21, 23, 31, 33, 41, 43, 51, 53, 61, 63 Parallel layers 12, 22, 32, 42, 52, 62 Orthogonal layers a1, a2 Wood board b1, b2 Bamboo board c1 Resin board

Claims (3)

平行層と直交層を積層接着してからなる直交集成板であって、
前記平行層は、木質の板または木質の小角材で構成される複数の第一の部材と竹質の板または竹質の小角材で構成される複数の第二の部材を有し、
前記平行層において、前記第一の部材の木質の繊維方向と前記第二の部材の竹質の繊維方向が互いに略平行となるように前記第一の部材と前記第二の部材が接着され、前記第二の部材と前記第二の部材の間に前記第一の部材を配し、
前記直交層は、複数の前記第一の部材を有している、ことを特徴とする直交集成板。 It is an orthogonal laminated board made by laminating and adhering parallel layers and orthogonal layers.
The parallel layer has a plurality of first members composed of a wooden board or a small wooden square timber and a plurality of second members composed of a bamboo board or a small square timber.
In the parallel layer, the first member and the second member are adhered so that the wood fiber direction of the first member and the bamboo fiber direction of the second member are substantially parallel to each other. It said first member coordinated between said second member and said second member,
An orthogonal laminated board, characterized in that the orthogonal layer has a plurality of the first members. 請求項１に記載の直交集成板であって、 The orthogonal laminated wood according to claim 1.
前記平行層の両端に、前記第二の部材が配される、ことを特徴とする直交集成板。 An orthogonal laminated board characterized in that the second member is arranged at both ends of the parallel layer. 請求項１または２に記載の直交集成板であって、 The orthogonal laminated wood according to claim 1 or 2.
前記直交層は、複数の前記第二の部材を有し、 The orthogonal layer has a plurality of the second members.
前記直交層において、前記第一の部材の木質の繊維方向と前記第二の部材の竹質の繊維方向が互いに略平行となるように前記第一の部材と前記第二の部材が接着され、前記第二の部材と前記第二の部材の間に前記第一の部材を配し、 In the orthogonal layer, the first member and the second member are adhered so that the wood fiber direction of the first member and the bamboo fiber direction of the second member are substantially parallel to each other. The first member is arranged between the second member and the second member, and the first member is arranged.
前記直交層の両端に、前記第二の部材が配される、ことを特徴とする直交集成板。 An orthogonal laminated board characterized in that the second member is arranged at both ends of the orthogonal layer.
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