Building interior and exterior materials and methods for manufacturing said building interior and exterior materials

Abstract

To obtain an interior and exterior building material that can suppress cracking and peeling of wooden boards without the need for chemical treatment. [Solution] The device comprises a veneer with a wood grain pattern on its surface and a fire-resistant layer bonded to one side of the veneer, wherein the summer wood portion that constitutes the wood grain of the veneer is recessed compared to the winter wood portion.

Description

Technical Field

[0006] , , , , , , , ,

[0007] , <​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Therefore, the main objective of the present invention is to provide an interior and exterior building material that can suppress cracking and peeling of wooden boards without the need for chemical treatment. [Means for solving the problem]

[0008] The building interior and exterior material according to the present invention comprises a veneer on which wood grain is visible on the surface of the board, and a fire-resistant layer bonded to one side of the surface of the veneer, characterized in that the summer wood portion that constitutes the wood grain of the veneer is recessed compared to the winter wood portion.

[0009] According to the present invention, the veneer and the fire-resistant layer are bonded together, and the summer wood portion that constitutes the grain of the veneer is recessed compared to the winter wood portion, so the summer wood portion, which shrinks significantly due to drying, becomes thinner. As a result, the shrinkage of the veneer is reduced compared to when the veneer is used as is, and cracking and peeling are suppressed.

[0010] Furthermore, the summer wood portion that constitutes the grain on either or both of the veneer surfaces may be recessed compared to the winter wood portion.

[0011] The uneven pattern formed by the winter and summer growth rings is beautiful and highly decorative.

[0012] Therefore, it is preferable that the summer wood portion, which constitutes the wood grain on the other side of the veneer, is recessed compared to the winter wood portion. With such a configuration, an uneven pattern appears on the surface, increasing its decorative appeal.

[0013] Furthermore, a specific embodiment of the Natsume portion is one in which the Natsume portion is carved out and recessed.

[0014] Incidentally, for interior and exterior building materials, the risk of ignition increases as the heat output and heat rate per unit area increase. This heat output and heat rate per unit area are determined by the amount of wood present per unit area. Therefore, as in this embodiment, by removing the summer growth rings, the heat output and heat rate per unit area are reduced, thereby reducing the risk of ignition. Furthermore, if there are upper limits on the heat output and heat rate per unit area, such as in fire safety standards, the thickness of the veneer can be increased by the amount by which the heat output and heat rate are reduced by removing the summer growth rings. As a result, it becomes possible to create a height difference between the summer and winter growth rings while still meeting the upper limits of fire safety standards, thus increasing the decorative aspect.

[0015] Another specific embodiment of the Natsume portion is one in which the Natsume portion is compressed and concave.

[0016] With this configuration, the Natsume portion is compressed, reducing the shrinkage rate and suppressing cracking and peeling. Furthermore, the Natsume portion becomes harder, making it more resistant to scratches and dents.

[0017] It is preferable that the summer wood portion and the winter wood portion on one side of the veneer surface are flush with each other.

[0018] This configuration increases the bonding surface area between the veneer and the fire-resistant layer, making them less likely to peel off.

[0019] Furthermore, it is preferable that the fire-resistant layer is in the form of a plate or sheet, and that the single plate and the fire-resistant layer are bonded together by an adhesive interposed between them.

[0020] With this configuration, the adhesive penetrates the veneer, which in turn minimizes and suppresses the shrinkage of the veneer.

[0021] The present invention relates to a method for manufacturing interior and exterior building materials, characterized by comprising the steps of applying a raised grain finish to the surface of a veneer where the wood grain is exposed, and bonding the veneer to a fire-resistant layer.

[0022] Another manufacturing method of the interior and exterior building materials according to the present invention is characterized by comprising a step of compressing a veneer from the side of the plate surface where the wood grain appears, and a step of bonding the veneer and the fireproof layer.

[0023] According to such a configuration, by compressing the veneer from the other plate surface side, the soft summer grain portion is greatly recessed compared to the hard winter grain portion. As a result, the shrinkage rate of the tissue of the summer grain portion due to compression becomes small, and cracking and peeling can be suppressed. In addition, since the summer grain portion becomes hard, it also becomes resistant to scratches and dents.

Effect of the Invention

[0024] According to the present invention, an interior and exterior building material capable of suppressing cracking and peeling of a wooden board can be obtained without performing treatment with a chemical agent.

Brief Description of the Drawings

[0025] [Figure 1] It is a perspective view schematically showing the interior and exterior building materials of the embodiment. [Figure 2] It is a cross-sectional view schematically showing the interior and exterior building materials of the embodiment. [Figure 3] It is a schematic view showing a manufacturing method of the interior and exterior building materials of the embodiment.

Mode for Carrying Out the Invention

[0026] The present invention is an interior and exterior building material used for decorating the inner wall and outer wall of a building. More specifically, it is a finishing material used by being attached to a base constituting the inner wall and outer wall of a building, and is mainly used for interior decoration.

[0027] <Embodiment> As shown in FIGS. 1 and 2, the interior and exterior building material 100 according to the present embodiment includes a veneer 10, a fireproof layer 20, and an adhesive layer 30 interposed between the veneer 10 and the fireproof layer 20.

[0028] The veneer 10 is a single board formed by thinly slicing a log. The wood grain is visible on at least one of the board surfaces 10s of the veneer 10. In this embodiment, the wood grain is visible on both board surfaces 10s. The wood grain may be straight grain, flat grain, or figured grain. The wood grain consists of alternating summer growth portions 11 formed during summer growth and winter growth portions 12 formed during winter growth. Examples of logs include paulownia, cedar, cypress, zelkova, oak, and mahogany.

[0029] The thickness of the veneer 10 is preferably between 0.15 mm and 3.0 mm. If it is thinner than 0.15 mm, the base material 20 will be visible through the veneer 10, resulting in a decrease in decorative appeal. If it is thicker than 3.0 mm, even if the processing according to the present invention is applied while maintaining decorative appeal, it will not be possible to completely suppress warping or cracking. In other words, if the summer joint is recessed more than necessary, the decorative appeal will actually decrease.

[0030] The fire-resistant layer 20 is bonded to one side surface 10s of the veneer 10 and is a plate or sheet material formed from fire-resistant materials as defined in the Building Standards Act. The shrinkage rate of the fire-resistant layer 20 is smaller than that of the veneer 10. Therefore, the fire-resistant layer 20 is less prone to expansion and contraction than the veneer 10.

[0031] The fire-resistant layer 20 is preferably 0.15 mm to 5.0 mm thick. If it is thinner than 0.15 mm, it becomes easily torn and difficult to handle, and if it is thicker than 5.0 mm, it becomes difficult to roll up and difficult to handle.

[0032] The aforementioned fire-resistant materials include non-combustible materials, semi-non-combustible materials, and flame-retardant materials. Non-combustible materials are defined as those that burn within 20 minutes or more after heating begins, non-combustible materials are defined as those that burn within 10 minutes or more but less than 20 minutes after heating begins, and flame-retardant materials are defined as those that burn within 5 minutes or more but less than 10 minutes after heating begins.

[0033] More specifically, the aforementioned fire-resistant materials include glass, metal, mortar, plaster, gypsum, rock wool, glass wool, cement, calcium silicate, and Dylite (registered trademark). The fire-resistant layer 20 may be formed using one or more of these fire-resistant materials.

[0034] The adhesive layer 30 is interposed between the veneer 10 and the fire-resistant layer 20, bonding them together. The adhesive constituting this adhesive layer 30 is preferably non-combustible. Specifically, examples include inorganic, silicone, and isocyanate adhesives. Alternatively, an adhesive containing flame-retardant material may also be used.

[0035] However, in this embodiment, the veneer 10 has summer wood grain portions 11 that make up the wood grain appearing on the board surface 10s, which are recessed compared to the winter wood grain portions 12. In this embodiment, the summer wood grain portions 11 that make up the wood grain on the other board surface 10s of the veneer 10, that is, the board surface 10s that does not face the fire-resistant layer 20, are shaved down so that they are recessed compared to the winter wood grain portions 12.

[0036] Specifically, the summer tree portion 11 is carved in such a way that it becomes more deeply concave as it moves away from the winter tree portions 12 that surround it. Therefore, the summer tree portion 11 has a curved concave shape in cross-section.

[0037] Next, the manufacturing method of the building interior and exterior material 100 according to this embodiment will be explained based on Figure 3.

[0038] First, as shown in Figure 3(a), a raised grain finish is applied to one side 10s of the veneer 10, thereby removing the summer wood portion 11 from that side 10s and making it recessed compared to the winter wood portion 12. Specifically, one side 10s is rubbed with a brush or similar tool. As a result, as shown in Figure 3(b), only the summer wood portion 11, which is softer than the winter wood portion 12, is removed, leaving a recessed state.

[0039] Next, as shown in Figure 3(c), an adhesive is applied to the fire-resistant layer 20, and the un-raised surface 10s of the veneer 10 is bonded to the fire-resistant layer 20. This forms the building interior and exterior material 100 according to this embodiment, as shown in Figure 3(d). The adhesive penetrates into the veneer 10.

[0040] According to this embodiment, the veneer 10 and the fire-resistant layer 20 are bonded together, and the summer wood portion 11 that constitutes the grain of the veneer 10 is recessed compared to the winter wood portion 12, so the summer wood portion 11, which shrinks significantly due to drying, becomes thinner. As a result, the shrinkage of the veneer 10 is reduced compared to when the veneer 10 is used as is, and cracking and peeling are suppressed.

[0041] Furthermore, the veneer is given a textured surface by applying a raised grain finish, resulting in a highly decorative finish. In addition, since the veneer 10 and the fire-resistant layer 20 are bonded together with adhesive, the adhesive penetrates into the veneer 10, making it less prone to expansion and contraction. As a result, cracking and peeling are further suppressed.

[0042] <Other Embodiments> The building interior and exterior materials according to the present invention are not limited to the embodiments described above. For example, in the embodiments described above, only the Natsume portion that appears on the opposite side of the board surface to which the fire-resistant layer of the veneer is bonded is recessed, but for example, only the Natsume portion that appears on one board surface may be recessed. In this case, the other board surface that appears on the surface of the veneer becomes flush, exhibiting a different decorative effect.

[0043] Alternatively, the Natsume portion appearing on both the surface of one board and the other may be recessed. In this case, the Natsume portion becomes thinner, further reducing the shrinkage rate.

[0044] Furthermore, although the summer wood portion was carved and recessed in the above embodiment, the invention is not limited to this. For example, the summer wood portion may be compressed and recessed. Specifically, if the entire surface of the veneer is compressed, the summer wood portion, which has a less dense structure than the winter wood portion, will be crushed and recessed.

[0045] Furthermore, although the veneer and the fire-resistant layer were bonded together with an adhesive in the above embodiment, the invention is not limited to this, and for example, the fire-resistant layer may be formed by applying and bonding a fire-resistant material to one surface of the veneer.

[0046] Furthermore, in the above embodiment, the summer wood portion of the veneer is scraped off by rubbing with a brush, but the method is not limited to this, and for example, it may be scraped off by blasting with sand or dry ice.

[0047] Furthermore, various combinations or modifications of parts of the embodiments are permitted, as long as they do not contradict the spirit of the present invention. [Explanation of Symbols]

[0048] 100 Interior and exterior materials for construction 10 Single Ply 10s board surface 11 Winter part 12 Natsume part 20 Fire protection layer 30 Adhesive layer

Claims

1. Veneer with wood grain visible on the surface, The single sheet comprises a fire-resistant layer bonded to one side of the sheet surface, A building interior and exterior material characterized in that the summer wood portion that constitutes the grain of the veneer is recessed compared to the winter wood portion.

2. The building interior and exterior material according to claim 1, wherein the summer wood portion constituting the wood grain on either one or both of the surfaces of the veneer is recessed compared to the winter wood portion.

3. The building interior and exterior material according to claim 1, wherein the summer wood portion that constitutes the wood grain on the other side of the veneer is recessed compared to the winter wood portion.

4. The building interior and exterior material according to claim 1, wherein the aforementioned Natsume portion is shaved down and recessed.

5. The building interior and exterior material according to claim 1, wherein the aforementioned Natsume portion is compressed and indented.

6. The building interior and exterior material according to claim 1, wherein the summer wood portion and the winter wood portion on one side of the veneer surface are flush.

7. The aforementioned fire-resistant layer is in the form of a plate or sheet. The building interior and exterior material according to claim 1, wherein the veneer and the fire-resistant layer are bonded together by an adhesive interposed between them.

8. The process involves applying a raised grain finish to the surface of the veneer, A method for manufacturing interior and exterior building materials, characterized by comprising a step of bonding the aforementioned veneer and a fire-resistant layer.

9. The process involves compressing the veneer from the side where the wood grain is visible, A method for manufacturing interior and exterior building materials, characterized by comprising a step of bonding the aforementioned veneer with a fire-resistant layer.

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