JP2004082588A - Woody face material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woody face material which can be manufactured at low cost while reducing construction waste and effectively utilizing resources. <P>SOLUTION: This woody face material 1 is constituted in such a manner that a plurality of discarded materials 10 and 11, which are composed of engineering wood and produced on a job site or in a factory, are bonded together by being combined with each other and formed like a face plate composed of a plurality of layers 1a and 1b. In terms of the face plate which is composed of the layers 1a and 1b, the discarded materials 10 and 11 are joined together by means of a butt joint, a scarf joint or a finger joint in each of the layers 1a and 1b, and a joining position is displaced in longitudinal and width directions between the adjacent layers 1a and 1b. In the face material 1, the discarded materials 10 and 11 are combined together so as to be symmetrical to one another in any one of the longitudinal, width and thickness directions. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wooden surface material that is useful for reducing construction waste and effectively using resources.
[0002]
[Prior art]
The members of a wooden building include not only solid wood cut from raw wood but also wood materials processed at a factory (OSB, plywood, particle board, laminated wood, LVL, etc .; also referred to as "engineering wood" in this specification). In particular, wood-faced wood made of engineering wood is often used for framed wall construction (two-by-four) buildings. In Japan, wood-faced wood made of engineering wood used for framed wall construction is often imported from North America.
[0003]
By the way, the construction module is different between North America and Japan. For example, the wood surface material of 910 mm × 2440 mm which is frequently used in the frame wall method of Japan is a wood surface material of 4 feet × 8 feet (1220 mm × 2440 mm) from North America. After being imported, it has been cut to 910 mm x 2440 mm in Japan, so each time a 310 mm x 2440 mm portion is generated in large quantities as scrap material (material that is not used because of its odd size) at factories and sites. I will. In addition to this, scraps are also generated by cutting holes for window openings in wooden facings according to the building, so a considerable amount of scraps are generated in factories and sites in total. .
[0004]
Conventionally, a large amount of offcuts generated at a site or a factory in this way is buried in a final disposal site as construction waste, or crushed at a recycling factory, and then recycled as particle board.
[0005]
[Problems to be solved by the invention]
However, as is well known, Japan's narrow landfill site is already full, and the discharge of construction waste contributes to environmental destruction. Further, even if the scrap material is crushed at a recycling factory, solidified with an adhesive, and regenerated as a particle board, there is not much merit because the production of the particle board is sluggish due to overproduction.
Furthermore, it is natural that a large amount of cost is required for landfill disposal and recycling as particle board, which raises the construction cost of Japan.
[0006]
The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a wooden surface material that can be manufactured at low cost while reducing construction waste and effectively using resources.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a wooden surface material characterized in that a plurality of end materials made of engineering wood generated at a site or a factory are combined and adhered to each other and formed into a face plate shape having a plurality of layers.
[0008]
Such woody surface materials have been conventionally reclaimed as discarded landfill or chipboard crushed chips as raw materials for particleboard, combined with each other and bonded together to form a faceplate-like wooden member composed of a plurality of layers. It is. By reusing scrap materials that were originally unnecessary and have no other use as they are as construction materials, construction waste can be reduced and resources can be used effectively, resulting in lower construction costs. And contribute to solving environmental problems.
Further, since such a wood-based surface material has a plurality of layer structures, the type of offcut material (the type of engineering wood as a raw material), dimensions, arrangement, orientation, and the like are appropriately set to cancel defects of each offcut material. As described above, face materials having various properties can be manufactured more easily than those having only one layer, and the strength is naturally high.
In addition, such a wooden surface material has a configuration similar to engineering wood such as plywood, laminated wood, and LVL. However, these engineering woods are bonded and bonded to each other using a sawn board or solid wood as a raw material. On the other hand, the woody surface material of the present invention is a material obtained by combining and adhering these "cut pieces" of engineering wood as raw materials, and is largely different in that it is a secondary product of wood.
[0009]
According to a second aspect of the present invention, in the wood facing according to the first aspect, in each of the layers, the offcuts are joined to each other by a butt joint, a scarf joint, or a finger joint, and the joining positions are adjacent to each other. It is characterized in that the layers are shifted in the length direction and the width direction between the matching layers.
[0010]
As described above, in each layer, the offcuts are connected to each other by the butt joint, the scarf joint, or the finger joint, so that the offcuts are securely joined at the joint position. Also, the joining position is shifted between the adjacent layers in the length direction and the width direction (between the adjacent layers, the joining position coincides in both the length direction and the width direction). No.), it is possible to easily manufacture a woody surface material of a predetermined size while dispersing the influence of the strength defect at the joint position.
[0011]
According to a third aspect of the present invention, in the woody surface material according to the first or second aspect, the plurality of offcuts are symmetrical in any of a length direction, a width direction, and a thickness direction. It is characterized by being combined.
[0012]
The type, size, arrangement, direction, and the like of the offcuts are adjusted such that the wood facing material is symmetrical in any of the length direction (X direction), the width direction (Y direction), and the thickness direction (Z direction). Therefore, there is no directionality as a whole, and the member is easy to use as a structural material.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same elements will be denoted by the same reference symbols, without redundant description.
[0014]
FIGS. 1A and 1B are a front perspective view and a rear perspective view, respectively, of a first embodiment of a wood facing according to the present invention. FIG. 2A is an enlarged cross-sectional view taken along line XX of FIG. 1A. As shown in these figures, the wooden surface material 1 is a two-layer flat plate-like member in which a surface layer 1a and a back surface layer 1b are bonded. The surface layer 1a is obtained by arranging two pieces of end materials 10, 10 in the width direction (Y direction) and assembling them into a flat plate as a whole and bonding them. The back surface layer 1b is obtained by arranging three pieces of end materials 11, 10, 11 in the width direction and combining and bonding them as a flat plate as a whole.
[0015]
The offcuts 10 have a length of 1,820 mm, a width of 303 mm, and a thickness of 9.5 mm, and the offcuts 11 have a length of 1,820 mm, a width of 151.5 mm, and a thickness of 9.5 mm, all of which are made of engineering wood. . That is, the offcuts 10 and 11 are unnecessary remaining materials after cutting out necessary members from engineering wood such as OSB, plywood, particle board, glued laminated wood, and LVL. For example, as shown in FIG. 3, from a plywood G of 4 feet wide × 8 feet long (1220 mm wide × 2440 mm long) imported from North America, an outer wall of 910 mm wide × 2440 mm long suitable for a building module in Japan. After the face material M is cut out, a portion of 310 mm in width × 2440 mm in length is left. However, conventionally, almost all of this portion was landfilled as construction waste, or crushed into chips as a raw material of particle board. However, in the present invention, as shown in FIG. 3 (a), an end piece 10 having a length of 1820 mm and a width of 303 mm is further cut out from this portion and used as a constituent member of the wooden facing 1. As shown in (1), the end material 11 having a length of 1820 mm and a width of 151.5 mm is cut out and used as a constituent member of the wooden surface material 1. In this way, the remnants that were conventionally leftovers can be secondarily utilized and reconstructed as woody surface materials, so that they can be landfilled as final construction waste, or chips can be used as raw materials for particle board. Since the portion to be crushed into a small shape is very small (the area indicated by the dashed line indicated by the symbol Y in the figure), resources can be effectively used throughout, and construction waste can be greatly reduced.
[0016]
As shown in FIG. 2A, the end portions of the end materials 10 and 11 are formed as finger joints A, respectively, and an adhesive is applied to each end surface thereof and joined. In addition, instead of the finger joint A, a scarf joint B or a butt joint C as shown in FIGS. 2B and 2C may be used.
[0017]
The surface layer 1a and the back surface layer 1b formed by combining the end materials 10 and 11 in the width direction are bonded to each other. Since both the end materials 10 and 11 have a thickness of 9.5 mm, the thickness of each of the surface layer 1a and the back surface layer 1b is 9.5 mm. The thickness is 20 mm including the intermediate adhesive layer.
In addition, the joining position of the offcuts is shifted in the width direction between the front surface layer 1a and the back surface layer 1b as shown in FIG. 1, so that the wooden surface material 1 as a whole is affected by the strength defect at the joining position. Are dispersed, and a face material having a predetermined size can be easily formed. Further, since the wood facing material 1 can be manufactured simply by combining and bonding the end materials 10 and 11 to each other by a simple method as described above, the cost is much lower than that of a particle board which is once crushed into chips and then solidified with an adhesive. It can be manufactured in.
[0018]
In addition, in such a wooden surface material 1, the end materials 10 and 11 are arranged so as to be symmetrical in the length direction and the width direction, but the present invention is not limited to this. However, if the type, size, arrangement, orientation, etc. of the scraps are adjusted so that they are symmetrical in both the length direction, width direction, and thickness direction, there is no overall directionality, and as a structural material This is desirable because it is a member that is easy to use.
In addition, considering that the weight and surface dimensions would make it difficult to manage on site, the wooden surface material 1 was made 1820 mm in length, 606 mm in width, and 20 mm in thickness, but the present invention is not limited to this. It is not done. In particular, in the case of a two-layer structure, the weight is not so large, so that the wooden face material 1 may be formed to have a length of 1820 mm, a width of 910 mm and a thickness of 20 mm, for example.
[0019]
FIGS. 4A to 4D are a plan view of a front surface layer, a plan view of a rear surface layer, a cross-sectional view in a length direction, and a cross-sectional view in a width direction, respectively, of the second embodiment of the woody surface material according to the present invention. As shown in these figures, the woody surface material 2 of the present embodiment also has a two-layer structure, and the overall dimensions are the same as in the first embodiment. However, the surface layer 2a is obtained by arranging and bonding four pieces of the end pieces 12, 12,... In the length direction (X direction) and the width direction (Y direction), two as a whole, and assembling them into a flat plate shape as a whole. The end material 12 has a length of 910 mm, a width of 303 mm, and a thickness of 9.5 mm. The back layer 2b is obtained by arranging one piece of scrap material 12, two pieces of scrap material 13, two pieces of scrap material 14, and four pieces of scrap material 15 and assembling them as a whole, and bonding them together. The end material 13 has a length of 455 mm, a width of 303 mm, and a thickness of 9.5 mm. The end material 14 has a length of 910 mm, a width of 151.5 mm, a thickness of 9.5 mm, and the end material 15 has a length of 455 mm and a width of 151.5 mm. The thickness is 9.5 mm. The tree cutting is performed, for example, as shown in FIGS.
In addition, the joining position of the offcuts is shifted between the front surface layer 2a and the back surface layer 2b in both the length direction and the width direction, so that the wood surface material 2 as a whole is affected by the strength defect at the joining position. Are dispersed, and a face material having a predetermined size can be easily formed.
Other points are the same as in the first embodiment.
[0020]
FIGS. 5A to 5E are a plan view of a surface layer, a plan view of a middle layer, a plan view of a back layer, a cross-sectional view in a length direction, and a cross-sectional view in a width direction, respectively, of a third embodiment of the woody surface material according to the present invention. It is. As shown in these figures, the wood surface material 3 of the present embodiment has a three-layer structure, the plane dimensions are the same as those of the above-described two embodiments, and the thickness is different. Each of the surface layer 3a and the back surface layer 3c is obtained by arranging and bonding two pieces of the end materials 10, 10 in the width direction (Y direction) and combining them as a whole in a flat plate shape. The end materials 11, 10, 11 are arranged in the width direction, and are combined and adhered in a flat plate shape as a whole. The logging is performed, for example, as shown in FIGS.
The wood surface material 3 of the present embodiment has a three-layer structure, and is characterized in that a plurality of pieces are combined so as to be symmetric not only in the length direction and the width direction but also in the thickness direction. It is. Of course, the joining position of the offcuts is shifted both in the length direction and the width direction between the surface layer 3a and the intermediate layer 3b and between the intermediate layer 3b and the back layer 3c. As a whole, the surface material 3 can be easily formed into a predetermined size while dispersing the influence of the strength defect at the joint position.
Other points are the same as in the above-described two embodiments.
[0021]
FIGS. 6A to 6E are a plan view of a surface layer, a plan view of a middle layer, a plan view of a back layer, a cross-sectional view in a length direction, and a cross-sectional view in a width direction, respectively, of a fourth embodiment of the woody surface material according to the present invention. It is. As shown in these figures, the woody surface material 4 of the present embodiment has a three-layer structure, and the overall dimensions are the same as those of the third embodiment. However, both the surface layer 4a and the back layer 4c are obtained by arranging two pieces of end materials 10, 10 in the width direction (Y direction) and combining and bonding them as a flat plate as a whole. Is obtained by arranging one piece of end material 12, two pieces of end material 13, and four pieces of end material 14, and assembling them into a flat plate as a whole and bonding them. The logging is performed, for example, as shown in FIGS.
In addition, the joining position of the offcuts is shifted in the length direction and the width direction both between the surface layer 4a and the intermediate layer 4b and between the intermediate layer 4b and the back layer 4c. As a whole, a surface material having a predetermined size can be easily formed while dispersing the influence of the strength defect at the joint position.
The other points are the same as in the above-described three embodiments.
[0022]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and it goes without saying that the present invention can be appropriately changed and implemented according to the purpose. For example, a structure having four or more layers may be used, and the layout dimensions of the scraps, the form and position of the joint between the scraps, the type of the adhesive, the manufacturing method, and the like are items to be determined as appropriate.
[0023]
【The invention's effect】
As described above, the invention according to the first aspect of the present invention recycles scrap wood that has been unnecessary and has no other use as it is as a wood-based surface material, thereby reducing construction waste and saving resources. Can be effectively utilized, and as a result, construction costs can be reduced and environmental problems can be solved. In addition, since it has a plurality of layer structures, face materials having various properties can be easily manufactured, and the strength is high.
[0024]
In addition, the invention according to claim 2 is that, in each layer, the offcuts are joined to each other by a butt joint, a scarf joint, or a finger joint, and the joining position is the length direction and the width between the adjacent layers. Since they are displaced in the direction, not only the end materials can be reliably joined together, but also the face material having a predetermined length can be easily manufactured while dispersing the influence of the strength defect at the joining position.
[0025]
Further, in the invention according to the third aspect, the type, size, arrangement, direction, and the like of the end material are adjusted so as to be symmetrical in any of the length direction, the width direction, and the thickness direction. It has no properties and is easy to use as a structural material.
[Brief description of the drawings]
FIGS. 1A and 1B are a front perspective view and a rear perspective view, respectively, of a first embodiment of a wood facing according to the present invention.
2A is an enlarged cross-sectional view taken along line XX of FIG. 1A, and FIGS. 2B and 2C are modifications of FIG. 2A.
FIGS. 3 (a) to 3 (c) are woodcut diagrams of plywood of 4 feet × 8 feet (1220 mm × 2440 mm) imported from North America.
FIGS. 4A to 4D are a plan view of a front surface layer, a plan view of a rear surface layer, a cross-sectional view in a length direction, and a cross-sectional view in a width direction, respectively, of a second embodiment of the wood facing material according to the present invention.
FIGS. 5 (a) to 5 (e) are respectively a plan view of a surface layer, a plan view of a middle layer, a plan view of a back layer, a cross-sectional view in a length direction, and a width direction of a third embodiment of a woody surface material according to the present invention. It is sectional drawing.
FIGS. 6 (a) to 6 (e) are respectively a plan view of a surface layer, a plan view of a middle layer, a plan view of a back layer, a cross-sectional view in a length direction, and a width direction of a fourth embodiment of a wood facing material according to the present invention. It is sectional drawing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Wood face material 1a ... Front layer 1b ... Back layer 10, 11 ... End material A ... Finger joint B ... Scarf joint C ... Butt joint G ... Plywood M ... Surface material for outer wall

Claims (3)

A wood-based surface material characterized in that a plurality of pieces of engineering wood generated at a site or a factory are combined with each other and bonded to form a face plate having a plurality of layers. In each of the layers, the end materials are joined by a butt joint, a scarf joint, or a finger joint, and the joining position is shifted in a length direction and a width direction between adjacent layers. The wood facing according to claim 1, wherein: The wooden surface material according to claim 1 or 2, wherein the plurality of offcuts are combined so as to be symmetrical in any of a length direction, a width direction, and a thickness direction.

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