JP5501300B2 - Bamboo plywood - Google Patents

Description

  The present invention relates to a bamboo plywood, and more particularly to a bamboo plywood for a high-strength pallet that is easy to manufacture and can be easily manufactured without causing environmental destruction.

  A cargo handling pallet is generally manufactured using wood board or plywood, but it is easily perishable due to moisture absorption, and it is disposed of by incineration when it cannot be used.

  However, timber is used by cutting and drying trees that take decades to grow and drying them, processing them into predetermined shapes and dimensions, or laminating and bonding wooden thin plates. The use of this material requires the logging of a large amount of trees, leading to the destruction of the global environment.

  On the other hand, thin bamboo boards made of bamboo are arranged in a bowl shape, and a plurality of board boards are laminated and bonded to produce a bamboo board. The bamboo board is used as a material for the pallet. A bamboo pallet has been proposed (Patent Document 1), but the strength of the load mounting surface is not sufficient.

  On the other hand, a lightweight bamboo board has been proposed in which a plurality of vertically divided bamboo members are vertically crossed or assembled in parallel with each other to form a structure, which is sandwiched between upper and lower bamboo plates (Patent Literature). 2). It is conceivable to make a pallet using this bamboo board. However, in this bamboo pallet, a vertically divided bamboo material is used for the load in the plate thickness direction (direction perpendicular to the plate surface). Since it receives, a load mounting surface can be made into sufficient intensity | strength.

Utility Model Registration No. 3026595 Utility Model Registration No. 3140654

  However, in the bamboo pallet described in Patent Document 2, when a plurality of vertically divided bamboo materials are vertically intersected with each other, the adjacent vertically divided bamboo materials can be held in a vertical posture, so that sufficient strength can be secured. Becomes complicated. On the other hand, when a plurality of vertically divided bamboo materials are arranged vertically and parallel to each other, manufacturing is easy, but it is difficult to maintain the vertically divided bamboo materials in a vertical posture, and there is a concern that strength may be reduced.

  In view of the above problems, an object of the present invention is to provide a high-strength bamboo plywood that can be easily manufactured without causing environmental destruction.

  Therefore, the bamboo plywood according to the present invention is composed of a plurality of vertically divided bamboo materials having a width corresponding to the thickness of the plywood, and the plurality of vertically divided bamboo materials are arranged vertically and at a predetermined interval from each other, It is composed of a structure that receives a load in a direction perpendicular to the plywood board surface, and a wood powder or bamboo powder molded board having a predetermined width and a thickness corresponding to the thickness of the plywood, a wooden piece or a laminate of bamboo pieces, or a wooden board. A plurality of spacer plates that are fixed between adjacent vertically divided bamboo members of the structure and that maintain a mutual interval between the plurality of vertically divided bamboo members and a vertical posture of each of the plurality of vertically divided bamboo members. And

  One of the features of the present invention is that a plurality of vertically divided bamboo materials are arranged vertically and parallel to each other to form a structure, and a strip-shaped spacer plate is fixed between the vertically divided bamboo materials. is there.

  As a result, it is possible to reliably maintain the interval and the vertical posture of the vertically divided bamboo materials of the structure, so that it is possible to reliably receive a load in a direction perpendicular to the plywood surface, and to obtain a high-strength bamboo plywood. it can.

  Further, when the vertically divided bamboo materials and the spacer plates are alternately arranged and fixed by bonding with an adhesive or the like, a bamboo plywood can be manufactured, which can be manufactured very easily.

  Bamboo grows at a growth rate of 3 to 4 years and is faster than trees that require several decades before they can be used. For example, bamboo is cut down in large quantities by thinning out two trees at a time. But it has little impact on the environment.

  Another feature of the present invention resides in that vertically split bamboo is used as a material for the structure. As a result, bamboo plywood can be manufactured in large quantities without adversely affecting the global environment, and harmful substances are less likely to be generated even when incinerated.

  The spacer plate only needs to be able to maintain the mutual spacing of the vertically divided bamboo materials and the vertical posture of the vertically divided bamboo materials, and does not require high strength like the vertically divided bamboo materials. A laminate of wood pieces or bamboo pieces can be used.

  When the bamboo plywood according to the present invention is used on a load mounting surface or a bottom surface of a pallet to which a load in a direction perpendicular to the plywood surface is applied, the effect is great. The pallet may be a flat pallet or a box pallet.

  The dimensions of the vertically divided bamboo material and the spacer plate are not particularly limited, but when used for a pallet, the vertically divided bamboo material has a strip shape having a thickness in the range of 5 mm to 15 mm and a height in the range of 10 mm to 20 mm. On the other hand, it is preferable that the spacer plate has a strip shape having a lateral width in the range of 20 mm to 60 mm and a height in the range of 10 mm to 20 mm.

  On the other hand, as shown in FIG. 3, when the vertically divided bamboo materials are arranged in the width direction and bonded, a large-area bamboo board can be manufactured. Therefore, the thickness of the plywood can be arbitrarily set by bonding a plurality of vertically divided bamboo materials in the width direction. Moreover, when the vertically divided bamboo material is bonded in the thickness direction, the thickness of the vertically divided bamboo material of the structure can be set to an arbitrary dimension.

1 is a schematic perspective view showing an example of a flat pallet using a preferred embodiment of a bamboo plywood according to the present invention. It is a partial perspective view which shows embodiment of the said bamboo-made plywood. It is a figure which shows typically the method of shape | molding the vertically divided bamboo material in arbitrary widths.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 and 2 show a preferred embodiment of a bamboo plywood according to the present invention. In the figure, the flat pallet 10 has a structure in which, for example, a wooden girder 21 is fixed between a load mounting surface 11 and a bottom surface 12 by nailing or the like, and the load mounting surface 11 and the bottom surface 12 are made of bamboo plywood 20 of this example. It is constituted by. In FIG. 1, a plurality of bamboo plywoods 20 are arranged at intervals, but may be constituted by one large bamboo plywood.

  Bamboo plywood 20 is a strip made of true bamboo vertically divided into equal widths, for example, strip-like vertical bamboo material 22 having a thickness of about 10 mm and a height of about 20 mm with a predetermined interval, for example, an interval of about 50 mm. By arranging, a structure that receives a load in a direction perpendicular to the plywood plate surface is formed, and a spacer plate 23 is fixed between adjacent vertically split bamboo members 22.

  On the other hand, the spacer plate 23 is made of a wood powder or bamboo powder molded plate, a piece of wood or a laminate of bamboo pieces, or a wood plate. For example, the spacer plate 23 is manufactured in a strip shape having a width of about 50 mm and a height of about 20 mm. It is bonded using an adhesive.

  The bamboo plywood 20 may be secured to the vertically split bamboo material 22 and the spacer plate 23, and may be fastened with a band 24 so as not to cause cracks between them. May cover the outer surface of the bamboo plywood 20 with a sheet or film made of synthetic resin.

  In the bamboo plywood 20 of this example, the strip plate-like spacer plate 23 is fixed between the plurality of vertically divided bamboo members 22 that receive a load, so that the vertically spaced bamboo members 22 are reliably maintained in the interval and the vertical posture. The load of the pallet 10 can be received reliably, and the pallet 10 with high strength can be obtained.

  Further, the vertically divided bamboo material 22 and the spacer plate 23 may be alternately arranged and fixed by bonding with an adhesive or the like, and the bamboo plywood 20 can be manufactured very easily.

  Furthermore, although the bamboo plywood of the present invention is used for the flat pallet 10, it can also be used for a known box-type pallet instead of the flat pallet.

DESCRIPTION OF SYMBOLS 10 Flat type pallet 11 Loading surface 12 Bottom 20 Bamboo plywood 22 Vertically split bamboo 23 Spacer board

Claims (3)

It is composed of a plurality of vertically divided bamboo materials (22) having a width corresponding to the thickness of the plywood, and the plurality of vertically divided bamboo materials (22) are spaced in the thickness direction perpendicular to the longitudinal direction and the width direction of the vertically divided bamboo materials. A wood having a structure that receives the load in the direction perpendicular to the plywood face, a predetermined width and a thickness corresponding to the thickness of the plywood, with the widest surface parts of the vertically divided bamboo materials arranged parallel to each other It is composed of a molded plate of powder or bamboo powder, a piece of wood or a laminate of bamboo pieces or a piece of wood, and is bonded between the adjacent vertically divided bamboo materials (22) of the structure, and the plurality of vertically divided bamboo materials (22) are mutually connected. A plurality of spacer plates (23) for maintaining the interval and the vertical posture of each of the plurality of vertically divided bamboo members (22) ;
A band (24) wound around the structure and the plurality of spacer plates (23) to tighten the structure and the plurality of spacer plates (23);
Bamboo plywood characterized by comprising   The bamboo plywood according to claim 1, wherein the load carrying surface (11) and the bottom surface (12) of the flat pallet (10) or the box pallet are configured.   The bamboo plywood according to claim 1, wherein the thickness of the plywood is arbitrarily set by bonding a plurality of vertically divided bamboo members (22) in the width direction.

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