JP7270405B2 - building board - Google Patents

Description

The present invention mainly relates to building boards used as interior materials such as flooring materials and furniture materials such as shelf boards. To provide a building board capable of creating a vintage feeling while being new.

"Vintage" is a word that expresses the meaning of "period", "old and valuable", and "a good taste has come out over the years". Along with this trend, there is a growing demand to give a “vintage” look and impression (vintage feeling) even to new products.

Building materials such as interior materials such as flooring and furniture materials such as shelf boards are also in demand for products with a vintage feel. (It is also called shabby processing, antique processing, etc.) to express a vintage feeling. Aging is a process that gives new products an appearance or impression (vintage feel) that has been used for many years. In the case of wooden products, after painting a new product, the painted surface is considered in terms of design. It consists of a process of finishing with a stain (a coloring agent that is colored by soaking into the material) mainly based on brown, which is assumed to be dirty or deteriorated (Non-Patent Document 1).

JP 2011-183631 A Japanese Patent No. 5754836 (paragraph 0005)

DIYer(s), "How to process new wood like old overseas wood", [online], June 3, 2016, [searched January 15, 2019], Internet (URL: https: //diyers.co.jp/articles/oldboard_a)

However, vintage processing such as the prior art described above requires several manual steps and is not cost-effective for mass production as an industrial product. The inventors of the present invention, while searching for a new method that can create a vintage feel without such processing, focused on building boards obtained by consolidating wooden materials made of coniferous trees. .

As a conventional consolidation treatment for wooden materials, in order to make the surface hard and scratch-resistant for flooring materials that can be worn on shoes, such as those used in stores, solid wood is mainly targeted, and the target is placed between a pair of heating plates. Japanese Patent Laid-Open No. 2002-100003 discloses that the entire material is compressed substantially uniformly and the hardness is increased by sandwiching the material and compressing it from both sides for a long time.

However, as described in Patent Document 2, when wood having knots (solid wood) is subjected to consolidation treatment, 1) the knots cannot be fully compacted, so the surface of the knots swells and does not become smooth. 3) Resin such as tar eluted from the joints adheres to the hot plates of the flat press machine, making it difficult to remove the consolidated wood from the hot plates. 4) The knots turn blackish brown, impairing the sense of design, and 5) when consolidating, problems such as denting the surface of the hot plate of the flat press machine occur (excerpt from the description in paragraph 0005). It was thought that wood with

In view of the current situation in which good quality hardwood veneers are running out, the applicant has studied consolidation treatment of wooden materials (softwood plywood, etc.) made of softwood veneers. Many softwood veneers have knots that penetrate through the front and back, and softwood veneers with such knots are conventionally suitable for use as interior materials such as flooring materials and furniture materials such as shelf boards. However, as a result of repeated considerations and experiments, it was discovered that by consolidating wood laminates such as softwood plywood, it is possible to obtain a novel appearance surface with a vintage feel by making use of the loose knots. As a result, the present invention was completed.

That is, the problem to be solved by the present invention is to consolidate wood laminates (softwood plywood, etc.) formed by laminating unit constituent boards having loose knots and suitably use them for store floors, furniture, shelf boards, etc. It is to provide a vintage-style building board that can be used.

In order to solve the above-mentioned problems, the present invention according to claim 1 is a building board obtained by consolidating a woody laminated board in which a plurality of unit component boards are laminated, wherein the A blanking pattern formed on a unit component plate having a substantially smooth surface corresponding to the missing knots of another unit component plate adjacent to the unit component plate and having a lighter color than the other surface portion of the unit component plate. is formed.

According to a second aspect of the present invention, there is provided the building board according to the first aspect, wherein the punched pattern is formed in substantially the same shape at a position corresponding to the punched knot of the other unit component board.

According to a third aspect of the present invention, there is provided the building board according to the second aspect, wherein the punched pattern is formed by inserting the front and back unit constituent plates into the missing knots of the other unit constituent plate.

The present invention according to claim 4 is the building board according to any one of claims 1 to 3, wherein each unit component board is a softwood veneer or sawn board, and the wood laminate is softwood plywood, softwood LVL, or softwood laminate. It is characterized by being either one of lumber and softwood CLT or any combination thereof.

Since the building board according to the present invention is obtained by consolidating the wood laminate, each unit component board of the wood laminate is compressed to increase its density, and the entire board is also compressed to increase its density. The strength of the whole is increased, and the surface hardness is also increased, making it difficult to be scratched. Therefore, it can be effectively used not only as a normal flooring material but also as a flooring material used in shops and the like, which can be used with shoes on.

In addition, the building board according to the present invention is a wood material using a unit component board (second unit component board) adjacent to the unit component board (first unit component board) located on the outermost surface or the backmost surface (second unit component board) having a missing knot. Since it is obtained by consolidating the laminated plate, during the consolidation process, the unit constituent plates (the first unit constituent plate and the third unit constituent plate) adjacent to the front and back of the second unit constituent plate become the second unit constituent plates. A punching pattern corresponding to the missing knot is formed on the surface of the first unit structural plate by entering the missing knot. In the first unit component plate, the parts other than the part corresponding to the missing knot of the second unit component plate are greatly compressed and the density increases, so the surface is observed in a dark color, whereas the surface of the second unit component plate The portion corresponding to the missing knot is hardly compressed even though the first and third unit plates are inserted, and the density does not change. As a result, although it is brand new, it looks as if it has been used for many years and has deteriorated due to scratches, sunburn, dirt, etc., and a unique texture that emphasizes the vintage feeling is created.

1 is a perspective view showing a veneer lamination state of 9-ply softwood plywood before consolidation treatment in one embodiment of the present invention. FIG. In this figure, the third veneer to the eighth veneer are omitted from illustration, and the wood grain of the backmost veneer is also omitted from illustration. FIG. 2 is a perspective view showing a building board (consolidated plywood) according to one embodiment of the present invention obtained by consolidating the 9-ply softwood plywood of FIG. AA cross-sectional view of the consolidated plywood shown in FIG. a)).

A building board according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. This building board 10 is made of a 9-ply softwood plywood 12 (FIG. 3(a)) in which nine softwood veneers 11a to 11i are laminated with their fiber directions orthogonal to each other in a conventional manner (for example, paragraphs 0063 to 0063 of Patent Document 1). 0077) to obtain a compacted plywood 13, and if necessary, a surface decorative layer (not shown) is formed by painting or the like.

More specifically, the building board 10 is made of a 9-ply softwood plywood 12 (for example, 24 mm or 28 mm thick, with a plane dimension of 910 mm×1820 mm) made of 9 cypress veneers 11a to 11i, which is about 1/2 thick. (12 mm or 14 mm) is subjected to surface cutting and actual processing (when used as a floor material), and a surface decorative layer is formed by painting to form a building board 10. is.

Veneers of coniferous trees such as Japanese cypress often have knots penetrating from the front and back, and softwood veneers having such knots have been conventionally used as interior materials such as flooring materials and furniture materials such as shelf boards. Although it was considered unsuitable for use, in the present invention, a cypress veneer having a missing knot 14 is used as the second veneer 11b.

When this 9-ply softwood plywood 12 is compacted between upper and lower hot plates at a compressibility of about 50% by a conventional method, the entire plywood is compressed to a thickness of about 1/2. At this time, the portion corresponding to the missing knot 14 of the second veneer 11b is almost the same as the portions 11a′ and 11c′ of the first veneer 11a and the third veneer 11c adjacent to the front and back of the second veneer 11b enter the missing knot 14. Since the first veneer 11a is not compressed and has almost no change in density, it is observed as a light-colored punched-out pattern 15 with approximately the same brightness as before the consolidation treatment on the surface of the first veneer 11a. On the other hand, except for the portion corresponding to the missing knot 14 of the second veneer 11b, each of the veneers 11a to 11i is compressed substantially evenly at a compression rate of about 50%, and the dark-colored portion 16 on the surface of the first veneer 11a. That is, in the dark-colored portion 16 on the surface of the first veneer 11a, the punched pattern 15 appears as a pattern similar to knots but with the color removed. A difference in gradation occurs between 15 and the dark color portion 16 . As a result, although it is brand new, it looks as if it has been used for many years and has deteriorated due to scratches, sunburn, dirt, etc., and a unique texture that emphasizes the vintage feeling is created. Therefore, if this building board 10 is used for the floor or the interior of a room, it is possible to emphasize a vintage feeling in a newly built house, or to renovate it in a vintage style.

Also, in the illustrated embodiment, the second veneer 11b is shown to have a single missing knot 14, but it may have a plurality of knots 14. FIG. In this case, a blank pattern 15 is formed corresponding to each missing knot 14, and complex shading is expressed on the surface between the dark-colored portions 16. FIG.

Each coniferous veneer after the third veneer 11c may also have loose knots, and if this is subjected to consolidation, the front and back veneers will enter the loose knots, but in this case, Since there are at least two veneers on the part of the slip knot, practically the effect of the slip knot is hardly observed from the surface after the consolidation treatment. As described above, when the second veneer 11b has the missing knots 14, these are observed from the surface as the punched patterns 15 after compaction.

Also, looking at the back side of the building board 10, if the second veneer from the back (the eighth veneer in the 9-ply softwood plywood 12) has a missing knot 14, after consolidation, the veneer 11i on the back most Similarly, a punched pattern 15 corresponding to the missing knot 14 is formed, and shading is observed between it and the surrounding dark-colored portion 16 . However, if the building board 10 is used as a flooring material or a surface material for furniture, the appearance of the rear side does not actually matter.

Although one embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to this and can be modified or changed within the scope of the invention described in the claims.

The above-mentioned effects are not limited to plywood in which a plurality of veneers are laminated with the fiber direction perpendicular to each other, but also LVL (laminated veneer lumber) in which a plurality of veneers are laminated with the fiber direction parallel. CLT (cross-laminated timber) made by laminating a plurality of sawn boards with their fiber directions perpendicular to each other, laminated lumber made by laminating a plurality of sawn boards with their fiber directions parallel, or any composite board of these The present invention is also exhibited in the case of consolidating a wood laminate in which the unit constituent plate adjacent to the unit constituent plate positioned on the outermost surface or the backmost surface has loose knots. It can be applied to these wooden laminates, and can similarly express a vintage-like appearance having a pattern with unique shading.

10 Building boards 11a to 11i Conifer veneer (unit component board)
11a' Portion 11c' of the first veneer that has entered the missing knot of the second veneer due to consolidation Part 12 of the third veneer that has entered the missing knot of the second veneer due to consolidation 9-ply softwood before consolidation plywood (wood laminate)
13 9-ply Softwood Plywood After Consolidation (Consolidated Plywood)
14 Missing knots of the second veneer 15 Stripping pattern formed on the first veneer 16 Dark colored part

Claims (4)

A building board obtained by consolidating a woody laminated board in which a plurality of unit component boards are laminated, wherein a unit component board having a substantially smooth surface located on the outermost surface or the backmost surface is adjacent to the unit component board. 1. A building board , characterized in that it is formed corresponding to a missing knot of another unit component board, and is characterized in that a blank pattern is formed in a lighter color than the other surface portion of said unit component board . 2. The building board according to claim 1, wherein the punched pattern is formed in substantially the same shape at a position corresponding to the punched knot of the other unit construction board. 3. The building board according to claim 2, wherein the punched pattern is formed by inserting the front and back unit component plates into the missing knots of the other unit component plate. Each unit component board is a softwood veneer or sawn board, and the wood laminate is any one of softwood plywood, softwood LVL, softwood laminated lumber and softwood CLT, or any combination of these. Item 4. The building board according to any one of items 1 to 3.

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