JP2022099684A - Orthogonally-laminated plate using bamboo material - Google Patents

Abstract

To provide an orthogonally-laminated material that improves dimension stability and strength.SOLUTION: An orthogonally-laminated plate 10 is obtained by laminating a plurality of plate members that adhere to each other. The plurality of plate members is: bamboo plate members b1, b2 constituted of bamboo plates or small bamboo square-bars; and wooden plate members a1, a2 constituted of wooden plates or small wooden square-bars. An upper surface layer, inner layers, and a lower surface layer are arranged in this order. The upper surface layer is a parallel layer constituted of the bamboo plate members b1. The inner layers are layers obtained by laminating an orthogonal layer constituted of the wooden plate members a1, and a parallel layer constituted of the wooden plate members a2 in this order. The lower surface layer is an orthogonal layer or a parallel layer constituted of the bamboo plate member b2.SELECTED DRAWING: Figure 1

Description

The present invention relates to an orthogonal laminated board in which bamboo is incorporated into a wood-based orthogonal laminated wood.

Conventionally, orthogonal laminated lumber in which bamboo lumber is laminated together with wood is known (for example, Patent Document 1).
Further, there is known an orthogonal laminated wood veneer formed by laminating and adhering three or more wood veneers with the fiber directions of the wood orthogonal to each other.

Japanese Unexamined Patent Publication No. 2016-231979

However, although the orthogonal laminated lumber using bamboo material shown in Patent Document 1 has excellent features of strength and dimensional stability, there is room for improvement in the combination of bamboo and wood that can further utilize the features depending on the application. .. In particular, in order to take advantage of the fact that bamboo is far superior to wood in terms of dimensional stability in an environment where it is easily exposed to water, the front and back surfaces of the conventional laminated wood-only laminated layer are made of bamboo. We came up with the present invention because we thought that by covering with the laminated lumber of Bamboo, we could make an orthogonal laminated lumber with bamboo that is resistant to water. Further, since the surface of the orthogonal laminated wood according to the present invention is composed only of bamboo, it is also characterized by being flame-retardant and resistant to combustion. In addition to the antibacterial and deodorant effects of bamboo, the high-class feeling of bamboo is also obtained. It is an element required for building materials.

An object of the present invention is to provide an orthogonal laminated wood having improved dimensional stability, especially in an environment where it is easily exposed to water, and strengths of tension, compression, bending, and twisting.

The above object is an orthogonal laminated board made by laminating and adhering a plurality of board members, and the plurality of board members are bamboo board members (b1, b2) composed of a bamboo board or a bamboo small square timber. ) And a wooden board or a wooden board member (a1, a2), which is arranged in the order of an upper surface layer, an inner layer, and a lower surface layer, and the upper surface layer is the bamboo board member. The inner layer is a layer in which an orthogonal layer composed of the wood board member and a parallel layer composed of the wood board member are laminated in this order, and the lower surface layer is the bamboo. It is achieved by an orthogonal laminated board (10), which is composed of a board member and is an orthogonal layer or a parallel layer to the upper surface layer.

According to the present invention, the dimensional stability in an environment where water is more easily splashed than the conventional orthogonal laminated wood, and the orthogonal laminated wood with improved tensile, compression, bending, and twisting strengths are improved. Glulam can be provided.

It is a perspective view of the orthogonal laminated board 10 by 1st Embodiment of this invention.

Hereinafter, the orthogonal laminated lumber (also referred to as “orthogonal laminated lumber”) according to the embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the orthogonal laminated lumber 10 is a bamboo plate or a bamboo small square timber (including those prepared by joining and adhering them in the length direction with their fiber directions substantially parallel to each other). Bamboo board members b1 and b2 composed of and wood board or wood small square wood (including those adjusted by joining and adhering them in the length direction with their fiber directions substantially parallel to each other). It is composed of laminated and bonded layers composed of wooden board members a1 and a2, and the layer is composed of a parallel layer and an orthogonal layer. In FIG. 1, the parallel layer refers to a layer in which the fiber directions of bamboo and wood are orthogonal to each other in the longitudinal direction of the laminated board 10, and the orthogonal layer is a short side of the bamboo and wood fibers in which the fiber directions are orthogonal to each other. It refers to the layer that is the direction.

Each of the upper surface layer and the lower surface layer is composed of a plurality of bamboo board members b1 and b2 made of bamboo material. The upper surface layer is composed of the bamboo plate members b1 arranged so that the bamboo fiber directions of the plurality of bamboo plate members b1 are substantially parallel to each other, and the end faces of the bamboo plate members b1 in the longitudinal direction are bonded to each other. The surface layer is formed by arranging the bamboo plate members b2 so that the bamboo fiber directions of the plurality of bamboo plate members b2 are substantially parallel to each other and adhering the end faces of the bamboo plate members b2 in the longitudinal direction. The bamboo fiber direction of the bamboo plate member b1 of the upper surface layer and the bamboo fiber direction of the bamboo plate member b2 of the lower surface layer are configured to be substantially at right angles 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 plate member b1 may be composed of a plurality of small square lumbers, or may be composed of a single plate. The bamboo fiber direction of the bamboo plate member b1 of the upper surface layer and the bamboo fiber direction of the bamboo plate member b2 of the lower surface layer may be configured to be substantially parallel to each other.

An inner layer is arranged between the upper surface layer and the lower surface layer. The inner layer is composed of two layers of a plurality of wooden board members a1 and a2 made of wood. The upper layer in the inner layer is composed of arranging the wood board members a1 so that the wood fiber directions of the plurality of wood board members a1 are substantially parallel to each other and adhering the end faces of the wood board members a1 in the longitudinal direction. It is configured by arranging the wood board members a2 so that the wood fiber directions of the wood board member a2 are substantially parallel to each other and adhering the end faces of the wood board member a2 in the longitudinal direction. The wood fiber direction of the upper wood board member a1 and the wood fiber direction of the lower wood board member a2 are configured to be substantially at right angles 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 members a1 and a2 may be made of a plurality of small square timbers, or may be made of a single board. Further, the inner layer may be composed of a plurality of layers of three or more, but it is preferable that the number of parallel layers and the number of orthogonal layers are the same.

As described above, in the orthogonal laminated board 10 of the present embodiment, the bamboo board member of the upper surface layer and the bamboo board member of the lower surface layer are orthogonal to each other, the inner layer is composed of the wooden board member, and the upper layer and the lower layer of the inner layer are orthogonal to each other. Moreover, the upper layer of the upper surface layer and the upper layer of the inner layer are also orthogonal to each other, and the lower layer of the lower surface layer and the lower layer of the inner layer are also orthogonal to each other. The orthogonal laminated wood plate 10 of the present embodiment has such a configuration, and the weak point that the dimensional stability of the wood becomes poor with respect to water and humidity is sandwiched between bamboo which is strong against water and humidity and has excellent dimensional stability. It is protected and has the effect of becoming an orthogonal laminated lumber that is advantageous when used in places that are easily exposed to rain. Further, in the orthogonal laminated wood 10 of the present embodiment, the bamboo laminated wood is attached to the front surface and the back surface of the wood orthogonal laminated wood with adhesives, respectively, and the wood orthogonal laminated wood is surrounded by the bamboo laminated wood from the outside. Even in an environment where water is splashed, it is possible to prevent water from entering the wood with bamboo that is resistant to water.

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. do not have. Moreover, not all of the configurations described in the above-described embodiments are essential constituent requirements of the present invention.

The present invention is widely used in orthogonal laminated plates, especially for building materials, furniture, exercise equipment, etc. that require dimensional stability in an environment where water is easily splashed and strengths of tension, compression, bending, and twisting. Is possible. In recent years, orthogonal laminated lumber has been increasingly applied as a building material for multi-story floors in Japan, and in the future, the bamboo-filled orthogonal laminated lumber of the present invention can also be used according to the application, and is a conventional orthogonal laminated lumber made only of wood. It is expected that there will be more cases of utilizing the dimensional stability and strength in an environment where water is easily splashed.

10 Orthogonal laminated boards a1, a2 Wood board members b1, b2 Bamboo board members

Claims (1)

It is an orthogonal laminated board made by laminating and adhering multiple board members.
The plurality of board members are a bamboo board member composed of a bamboo board or a small square timber, and a wooden board member made of a wood board or a small square timber.
The upper surface layer, the inner layer, and the lower surface layer are arranged in this order,
The upper surface layer is a parallel layer composed of the bamboo plate members, and is a parallel layer.
The inner layer is a layer in which an orthogonal layer made of the wood board member and a parallel layer made of the wood board member are laminated in this order.
The lower surface layer is composed of the bamboo plate member, and is an orthogonal laminated board characterized by being an orthogonal layer or a parallel layer with respect to the upper surface layer.

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