JP3036146U - Bamboo flat plate and stack of bamboo flat plates - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] Despite the use of flat plates obtained by expanding raw bamboo from which unnecessary parts have been removed, warp deformation and Provided are a bamboo flat plate and a laminated body of the bamboo flat plate, which are unlikely to cause mold, mold, and insects. SOLUTION: A flat plate A made of bamboo is obtained by subjecting a flat plate obtained by spreading raw bamboo to a smoke treatment or a carbonization treatment.
A laminate C is obtained by laminating two such flat plates A and A ′. The two flat plates A and A ′ have surfaces 11 and 11 ′ that correspond to the inner surface of the raw bamboo before unfolding. The fiber axes 31a and 31a 'of the two flat plates A and A'are orthogonal to each other.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bamboo flat plate and a stack of bamboo flat plates used as building materials such as wall boards, floor boards, and ceiling boards, as surface materials for furniture, and as concrete formwork panels.

[0002]

[Prior art]

 In order to avoid the depletion of timber resources associated with deforestation, the use of bamboo as a substitute for conventional wood boards has received attention. Under such circumstances, Japanese Patent Application Laid-Open No. 6-320504 proposes a method for producing a wide flat plate from raw bamboo.

The method of manufacturing a bamboo flat plate described in this publication removes unnecessary parts such as branches and leaves from felled raw bamboo to obtain raw bamboo whose thickness is substantially uniform over the entire length. Thus, a narrow vertical groove 1 is formed at one position in the circumferential direction of the raw bamboo B, and the raw bamboo B is gradually expanded from a portion close to the vertical groove 1 through several steps as shown in FIGS. It is developed and finally finished into the flat plate 5 shown in FIG. In FIG. 5 to FIG. 8, the flattened part of the unfolded bamboo B is shown as the development part 2.

[0004]

[Problems to be solved by the device]

 However, bamboo is a plant with high fiber content, and since the original shape of the flat plate 5 obtained by the above method is a cylindrical shape, the bamboo flat plate 5 produced through the above-mentioned expansion process is used as it is. When it is used for building materials such as ceiling materials, furniture surface materials, concrete formwork panels, etc., it will warp and deform to approach the original shape of raw bamboo due to moisture absorption and drying over time. There is a lot of fear. It also has the property of easily cracking or breaking along the fibers when nailing.

The present invention has been made in view of the above circumstances, and is a bamboo flat plate obtained by expanding raw bamboo, but the above-mentioned building materials, furniture surface materials, and concrete formwork panels. An object of the present invention is to provide a bamboo flat plate and a laminated body of the bamboo flat plate which are less likely to be warped, cracked or cracked, moldy, putrefactive, or have insects even when used for such purposes. Further, the present invention aims to provide a bamboo flat plate and a laminate of bamboo flat plates having a function of removing odors and moisture in the air when used as a building material or a surface material of furniture. And

[0006]

[Means for Solving the Problems]

 The bamboo flat plate of the invention according to claim 1 is a bamboo flat plate obtained by expanding raw bamboo from which unnecessary parts are removed, and is either smoked or carbonized. , Is.

“Smoking treatment” is a treatment for exposing an object to smoking. Bamboo slabs that have been "smoked" are dried with oil and water removed, so warpage deformation over time, mildew, rot, and bug attachment are less likely to occur. In addition, the unique color and luster that accompanies "smoke treatment" is given to the outer surface, so it is used for visible parts such as wallboards, floorboards and ceiling boards and building materials such as surface materials. It is useful as a flat plate material. The "carbonization process" is a process of carbonizing an object under pressure. This “carbonization” is preferably a treatment that causes the outer surface and the inside of the bamboo plate to turn light brown or brown, and the bamboo plate subjected to such “carbonization” is dried. However, since the stress remaining after the unfolding of raw bamboo has been eliminated, warp deformation, mold, rot, and bug attachment are less likely to occur, surface finishing and groove processing are easy to perform, and "carbonization treatment" is applied to the outer surface. In addition to the unique color and luster that accompany it, the unique color and luster that accompanies "carbonization" also appears on the exposed surface due to groove processing, etc. It is useful as a flat plate material used for visible parts such as surface materials. In addition, cracks and cracks caused by nailing are less likely to occur.

The bamboo flat plate may be subjected to either one of the “smoke treatment” and the “carbonization treatment”.

In the laminated body of bamboo plates according to the second aspect of the present invention, two bamboo plates obtained by expanding raw bamboo from which unnecessary parts are removed are the surfaces corresponding to the inner surface of the raw bamboo before expansion. Are bonded to each other with an adhesive so that they overlap with each other, and both of the two flat plates are subjected to either a smoke treatment or a carbonization treatment.

According to this invention, the action of the above-mentioned “smoke treatment” or “carbonization treatment” is exhibited by the two bamboo flat plates. In addition, two bamboo flat plates are bonded with an adhesive so that the surfaces corresponding to the inner surface of the raw bamboo before unfolding overlap with each other, so that one of the flat plates is warped and the other is Since the flat plate is in the direction opposite to the direction in which the warp deformation occurs, each flat plate exerts the effect of preventing the warp deformation of the other flat plate, and as a whole, the warp deformation hardly occurs. .

In the laminated body of bamboo plates according to the third aspect of the present invention, two bamboo plates obtained by expanding raw bamboo from which unnecessary parts have been removed are the surfaces corresponding to the inner surface of the raw bamboo before expansion. Are bonded so that they overlap with each other, and one of the two flat plates is smoked and the other is carbonized.

According to this invention, the action of the above-mentioned “smoke treatment” is emitted by one flat plate, and the action of the above-mentioned “carbonization treatment” is exhibited by the other flat plate. The fact that one flat plate and the other flat plate exhibit the action of preventing warpage and deformation is the same as in the case of the invention of claim 2.

According to a fourth aspect of the present invention, there is provided a laminated body of bamboo flat plates, wherein at least one other plate material is provided between two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts are removed. The intermediate material is sandwiched, and the intermediate material and the two flat plates on both sides thereof are overlapped with the surface corresponding to the inner surface of the raw bamboo before unfolding. It is said that they are joined by an adhesive and both of the two flat plates are subjected to either smoking or carbonization.

According to this invention, the action of the “smoke treatment” or “carbonization treatment” described in claim 1 is exerted by the two bamboo flat plates. In addition, an intermediate material made of at least one other plate material is sandwiched between the two bamboo flat plates to increase the thickness of the laminate, and the outer surfaces of the bamboo flat plates are provided on both front and back surfaces. Since it appears, it is possible to fabricate a thick laminate that looks like it is made of bamboo. Further, warp deformation of one flat plate or the other flat plate is prevented by the intermediate material sandwiched between them.

The laminated body of bamboo flat plates of the present invention according to claim 5 is a plate material of at least one other material between two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts are removed. The intermediate material is sandwiched, and the intermediate material and the two flat plates on both sides thereof are overlapped with the surface corresponding to the inner surface of the raw bamboo before unfolding. They are bonded with an adhesive, and one of the two flat plates is smoked and the other is carbonized.

According to this invention, the action of the above-mentioned “smoke treatment” is exerted by one of the flat plates, and the action of the above-mentioned “carbonization treatment” is exerted by the other flat plate. In addition, it is possible to fabricate a thick laminated body as if it were made of bamboo, and the warp deformation of one flat plate or the other flat plate is sandwiched between them. The point of being blocked by the material is the same as in the device according to claim 4.

According to a sixth aspect of the present invention, there is provided a bamboo flat plate laminated body according to any one of the third, fourth and fifth aspects, wherein the two flat plates have their fiber axes orthogonal to each other. It is being distributed as.

According to this invention, the function of preventing the warp deformation is more remarkably exhibited. The bamboo flat plate and the laminated body thereof according to each of the above-mentioned inventions are only provided with a function of absorbing moisture and odor in the air by "smoke treatment" and "carbonization treatment" applied to the bamboo flat plate. Not only that, but the distribution density of bamboo fiber is adjusted to a moderately high level, and mechanical properties such as bending strength, compressive strength, and abrasion resistance are greatly improved compared to raw bamboo. Also, due to the "smoke treatment" and "carbonization treatment", expansion cracks along the bamboo fiber are less likely to occur during nailing, so wall boards that are often subject to expansion due to nailing etc. It can be used very effectively as a building material such as floorboards and ceiling materials, a surface material for furniture, and a panel for concrete formwork. In addition, since the surface of the surface has a unique bamboo fiber pattern and bamboo pattern that cannot be expressed with wood, it can be used without any surface coating treatment such as painting by using it as a building material. It has an aesthetic or hobby, as well as a refreshing and luxurious feel, and is excellent in design.

[0019]

[Embodiment of the invention]

 1 (a) is a perspective view schematically showing a bamboo flat plate A showing an embodiment of the invention according to claim 1, and FIG. 1 (b) is an enlarged perspective view of a portion Ia of FIG. 1 (a). It is a figure.

This bamboo plate A is obtained by expanding raw bamboo from which unnecessary parts such as branches and leaves have been removed, and has been subjected to either "smoke treatment" or "carbonization treatment". There is. Since this flat plate A is obtained by unfolding raw bamboo, as shown in FIG. 1 (a), countless bamboo fibers 31 are extended in parallel on the surface 10 and the side surface 20 thereof. This is realized as a novel fiber pattern that cannot be obtained with the surface pattern of wood, and it has a satisfactory aesthetic appearance. An outer surface such as the surface 10 or the side surface 20 of the flat plate A may be coated with an overcoating agent having a transparent luster or a transparent coloring paint, or an opaque coloring paint may be applied to the outer surface thereof. .

The flat plate A has been subjected to either “smoke treatment” or “carbonization treatment”. The "smoke treatment" is useful for removing oil and water from the flat plate A and drying it, so that the flat plate A can be prevented from warping and deforming over time, and can prevent mold, rot, and bugs from occurring. Be beneficial. The outer surface of the flat plate A that has been subjected to "smoke treatment" is given a unique color tone and luster due to the "smoke treatment", so it can be used as a surface material for building materials such as wallboards, floorboards and ceiling boards, and furniture. It is especially suitable for use in visible parts such as. "Carbonization" is a process in which a flat plate before treatment is placed in a pressure cooker for carbonization such as in an autoclave, and the outer surface and inside are discolored to light brown or brown under a pressure of about 2 to 5 kg / cm2. desirable. The flattened plate A that has been subjected to "carbonization treatment" is dry, and the stress remaining after the unfolding of raw bamboo has been eliminated, so warp deformation does not easily occur, and mold, rot, and insect sticking do not easily occur. Instead, it facilitates surface finishing and grooving, and also gives the outer surface the unique color and brilliance associated with "carbonization." In addition, the grooved surface gives the exposed surface a unique color and luster that accompanies the "carbonization treatment", making it visible like a surface material for building or furniture such as wallboards, floorboards, and ceiling boards. It is useful as a flat plate material used for parts. In addition, cracks and fractures caused by nailing are less likely to occur. Further, the above-mentioned flat plate A that has been subjected to "smoke treatment" and "carbonization treatment" is not only provided with the function of absorbing moisture and odor in the air, but also has a moderately increased distribution density of bamboo fibers. The mechanical properties such as bending strength, compressive strength, and abrasion resistance have been greatly improved compared to raw bamboo, so it is extremely suitable as a surface material for building materials and furniture listed above. Can be used.

FIG. 2A is a perspective view schematically showing a laminated body C of bamboo flat plates showing an embodiment of the invention according to claim 2, claim 3 or claim 6, and FIG. 8A is an enlarged perspective view of the I Ia portion of FIG. For this laminated body C, the same two flat plates A and A'as described in FIG. 1 are used. In the laminate C according to the second aspect of the present invention, both of the two flat plates A and A'are subjected to either smoking treatment or carbonization treatment. Further, in the laminate C of the invention according to claim 3, one of the two flat plates A and A ′ is subjected to “smoke treatment” and the other A ′ is subjected to “carbonization treatment”. Has been done. Since the "smoke treatment" and "carbonization treatment" applied to the flat plates A and A'were already described, the details of those treatments are omitted here, but the two sheets subjected to those treatments are omitted. Each of the flat plates A and A'provides a function of preventing warpage deformation caused by the above-mentioned "smoke treatment" and "carbonization treatment", an action of preventing mold, rot and insects, and a unique color and gloss. The added effect, the effect of facilitating surface finishing and groove processing, and the like are the same as described above. Therefore, the same parts are designated by the same reference numerals.

In the laminated body C of FIG. 2, two flat plates A and A ′ are obtained by expanding raw bamboo from which unnecessary parts such as branches and leaves are removed, and the flat plates A and A ′ are The surfaces 11 and 11 'corresponding to the inner surface of the raw bamboo before unfolding are joined with an adhesive so as to overlap each other. Further, the two flat plates A and A'are arranged so that the fiber axis 31a of the bamboo fiber 31 of the one flat plate A and the fiber axis 31a 'of the bamboo fiber 31' of the other flat plate A'are orthogonal to each other. There is.

According to the layered product C of FIG. 2, two flat plates A and A ′ are bonded with an adhesive so that the surfaces 11 and 11 ′ corresponding to the inner surface of the raw bamboo before development overlap each other. The direction in which one flat plate A is going to cause warp deformation is opposite to the direction in which the other flat plate A'is going to warp, and moreover, the fiber of the bamboo fiber 31 of one flat plate A is Since the axis 31a and the fiber axis 31a 'of the bamboo fiber 31' of the other flat plate A'are orthogonal to each other, the flat plates A and A 'exert the action of mutually preventing warp deformation, and the laminated body As C, warp deformation is extremely unlikely to occur.

FIG. 3A is a perspective view schematically showing a laminated body D of bamboo flat plates showing an embodiment of the invention according to claim 4 or 5, and FIG. 3B is the same. It is the perspective view which expanded the IIIa section of FIG. The same two flat plates A and A'as described with reference to FIG. 1 are also used for the laminated body D. In the laminated body D of the invention according to claim 4, both of the two flat plates A and A'are treated by either "smoke treatment" or "carbonization treatment". Further, in the laminated body D of the invention according to claim 5, one of the two flat plates A and A'is subjected to "smoke treatment" and the other A'is subjected to "carbonization treatment". . The “smoke treatment” and “carbonization treatment” applied to the flat plates A and A ′ have already been described, so details of those treatments will be omitted here, but the two sheets subjected to those treatments will be omitted. Each of the flat plates A and A'provides an effect of preventing warpage deformation caused by the above-mentioned "smoke treatment" and "carbonization treatment", an effect of preventing mold, rot and insects, and a unique color and luster. It is the same as the one described above that it exerts the function of making the surface finish and making the groove easy to process. Therefore, the same parts are designated by the same reference numerals.

In the layered product D of FIG. 3, the two flat plates A and A ′ are obtained by expanding raw bamboo from which unnecessary parts such as branches and leaves have been removed. Then, between the two flat plates A and A ', an intermediate material P made of a plate material of another material is sandwiched, and the intermediate material P and the two flat plates A and A'on both sides thereof are sandwiched. The intermediate material P and the two flat plates A and A ′ are joined with an adhesive so that the surfaces 11 and 11 ′ corresponding to the inner surface of the raw bamboo before development in FIG. Further, the two flat plates A and A'are arranged so that the fiber axis 31a of the bamboo fiber 31 of the one flat plate A and the fiber axis 31a 'of the bamboo fiber 31' of the other flat plate A'are orthogonal to each other. . The plate material used for the intermediate material P may be any plate material that is not made of bamboo, and for example, a wood plate, a plastic plate, a plywood, or a recycled plastic plate can be used.

According to the laminated body D of FIG. 3, the intermediate material P is sandwiched between the two flat plates A and A ′ to increase the thickness of the laminated body D, and moreover, both sides of the plate are made of bamboo. Since the outer surfaces of the flat plates A and A'appear, the laminated body D has a thick wall as if it were made of bamboo. The laminated body D like this uses only two bamboo flat plates A and A ′, but the thickness of the laminated body D is increased by the intermediate material P made of a material other than bamboo. It is cheaper than the one with the same wall thickness using three flat plates. Further, the warp deformation of the one flat plate A or the other flat plate A'is prevented by the intermediate member P sandwiched therebetween.

In the laminated body D of FIG. 3, one plate material is used as the intermediate material P, but two or more plate materials joined together may be used as the intermediate material.

When the flat plate A or the laminated bodies C and D described above are used as building materials such as wall boards, floor boards, and ceiling boards, and surface materials for furniture such as chests of drawers and desks, the overall thickness dimension is 2 to 20 mm, and the length and width are It is convenient to set the length dimension of the plate to about 200 × 40 cm because the flat plates A and the laminated bodies C 1 and D 2 can be handled as a panel. The same applies when it is used as a panel for a concrete form. However, with regard to the thickness dimension and the length and breadth dimension, various dimensions should be changed according to the application and place of application, and appropriate dimensions should be selected. Further, the flat plate A and the laminates C and D described above can be used by arranging the laminates for plate materials in a vertical and horizontal manner by subjecting their side portions to step processing or groove processing.

[0030]

[Effect of the invention]

 According to the present invention, warp deformation, mildew, rot, and insect sticking are less likely to occur, and a unique color tone and gloss are imparted, and an effect of facilitating surface finishing and grooving is exhibited. It is possible to provide a bamboo flat plate and a laminated body thereof. Moreover, when these bamboo flat plates and their laminates are used for building materials such as wall materials, floor materials, ceiling materials, furniture surface materials, concrete formwork, etc., they are sufficient substitutes for conventional wooden boards. I am satisfied. Further, in some cases, it can be suitably used as a surface material for building materials and furniture having characteristics that cannot be obtained with wooden boards.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view schematically showing a bamboo flat plate showing an embodiment of the invention according to claim 1. FIG. (B) is an enlarged perspective view of the Ia portion of (a).

FIG. 2A is a perspective view schematically showing a stack of bamboo flat plates showing an embodiment of the invention according to claim 2 or claim 3; (B) is an enlarged perspective view of a portion IIa of (a).

FIG. 3A is a perspective view schematically showing a laminated body of bamboo flat plates showing an embodiment of the invention according to claim 4 or claim 5; (B) is an enlarged perspective view of a portion IIIa of (a).

FIG. 4 is a schematic front view of raw bamboo having vertical grooves formed therein.

FIG. 5 is a schematic front view showing a state where a part of raw bamboo is developed.

FIG. 6 is a schematic front view showing a state in which raw bamboo is further developed.

FIG. 7 is a schematic front view showing a state in which raw bamboo is further developed.

FIG. 8 is a schematic front view showing a state in which raw bamboo is further developed.

FIG. 9 is a schematic front view of a flat plate obtained by completely unfolding raw bamboo.

[Explanation of symbols]

 A, A'Plate (bamboo plate) B Raw bamboo 11, 11 'Surface corresponding to the inner surface of raw bamboo before development 31a, 31a' Fiber axis P Intermediate material

Claims (6)

[Utility model registration claims] 1. A bamboo flat plate obtained by expanding raw bamboo from which unnecessary parts have been removed, characterized by being subjected to either smoke treatment or carbonization treatment. . 2. Two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts have been removed are joined with an adhesive so that the surfaces corresponding to the inner surfaces of the raw bamboo before expansion overlap with each other.
A laminate of bamboo flat plates, characterized in that both of the above flat plates are subjected to either smoking or carbonization. 3. Two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts have been removed are joined with an adhesive so that the surfaces corresponding to the inner surfaces of the raw bamboo before expansion overlap with each other.
A laminate of bamboo flat plates, characterized in that one of the flat plates is smoked and the other is carbonized. 4. An intermediate material made of at least one other plate material is sandwiched between two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts are removed, and the intermediate material The intermediate material and the two flat plates are joined by an adhesive so that the surfaces of the two flat plates on both sides corresponding to the inner surface of the raw bamboo before development are overlapped with each other, and the two flat plates are bonded to each other. A laminated body of a flat plate made of bamboo, which has been subjected to either smoke treatment or carbonization treatment. 5. An intermediate material made of at least one other plate material is sandwiched between two bamboo flat plates obtained by expanding raw bamboo from which unnecessary parts are removed, and the intermediate material and The intermediate material and the two flat plates are bonded with an adhesive so that the surfaces of the two flat plates on both sides corresponding to the inner surface of the undeveloped bamboo overlap each other, and the intermediate plate and the two flat plates are bonded to each other by one of the two flat plates. A laminated body of a flat plate made of bamboo, which is smoked and carbonized on the other. 6. The laminated body of bamboo flat plates according to claim 3, wherein the two bamboo flat plates are arranged with their fiber axes orthogonal to each other.