JP5215599B2 - Building board - Google Patents

Description

  The present invention relates to a building board used as an exterior material for a house, a commercial building, a factory, a warehouse, or the like.

Conventionally, building board for use as an exterior member is formed of a so-called ceramic-based Size Lee loading material composed mainly of cement (for example, see Patent Document 1). It is proposed that such a building board A is subjected to actual processing at its end, and is constructed so that the adjacent building boards A and A are connected by actual joining. For example, as the building board A, approximately half of the surface side in the thickness direction is projected as a real part 10 at one end thereof, and the back side in the thickness direction at the other end (the end opposite to the one end). There is a thing in which approximately half protruded as the actual receiving part 11, and in this case, as shown in FIG. 5, among the adjacent building boards A and A, the real part 10 of one building board A is used as the other building board. Adjacent building boards A and A are connected to each other by superimposing them on the surface side of the actual receiving portion 11 of A. Here, in order to improve the waterproofness of the actual joint portion, a packing 15 is formed on the surface of the actual receiving portion 11 using hot melt such as foamed resin, and the real portion 10 is connected to the surface side of the actual receiving portion 11. When the two are stacked, the packing 15 is brought into close contact with the back surface of the real part 10 so as to close the gap at the actual joint part.

However, the provision of such a packing 15 causes a problem. That is, in recent years, building board manufacturers have collected scraps generated at construction sites due to environmental problems, pulverized, and reused them as raw materials for building boards. However, the packing 15 adheres to the scraps. In this state, since the resin of the packing 15 is mixed as a foreign substance in the building board material, various problems arise in terms of manufacturing and quality. For example, problems such as the fact that the resin adheres to the manufacturing equipment and cannot be molded into a desired shape occur on the manufacturing side, and the problem that the bonding strength of the cement is weakened and the strength is reduced occurs on the quality side. Therefore, it is necessary to remove the packing 15 before pulverizing the mill ends, and there is a problem that this work is very troublesome. Moreover, it is necessary to bond the packing 15 in the process of manufacturing the building board A, and there is a problem that it takes time and effort on the manufacturing side.
Japanese Patent No. 2591625

  This invention is made | formed in view of said point, and it aims at providing the building board which can simplify the effort at the time of reuse, and the effort at the time of manufacture.

In the building board A according to claim 1 of the present invention, a part of the hollow holes 2 becomes a groove-like drainage channel 2a by actually processing the end of the substrate 1 having a large number of hollow holes 2. The hollow hole 2 exposed to the actual processing surface 3 is formed so as to be opposed to the surface 3 by connecting the actual portion 4 formed by the actual processing and being exposed to the surface 3. .

Building board A according to claim 2 of the present invention, which is characterized by comprising in claim 1 Oite, a plurality of hollow holes 2, 2, the exposed over the entire surface of the actual working surface 3 is there.

A building board A according to claim 3 of the present invention is the building board A according to claim 1 or 2 , wherein the substrate 1 is formed of a cement-based molding material comprising a cement-containing inverse emulsion composition mainly composed of cement, water, and an oily substance. It is characterized by being made.

  In invention of Claim 1, the hollow hole 2 exposed to the actual process surface 3 can be formed as a groove-shaped drainage channel 2a, and the water which entered the clearance gap of the actual joining part can be drained through this drainage channel 2a. Therefore, it is possible to ensure waterproofness. Therefore, it is not necessary to provide the packing 15 as in the conventional case, and the labor for reusing the end material and the labor for manufacturing the building board are simplified. Is something that can be done.

Furthermore, in the invention of claim 1 , the groove-like drainage channels 2a, 2a exposed on the actual machining surface 3 face each other, so that the cross-sectional area of the drainage channel 2a can be increased, and the drainage channels 2a, 2a It becomes easy to flow and can improve drainage performance.

In the invention of claim 2 , a plurality of drainage channels 2a can be formed in the actual joint portion, and drainage performance can be enhanced.

In the invention of claim 3 , since the substrate 1 is formed of a cement-based molding material made of a cement-containing inverse emulsion composition mainly composed of cement, water, and an oily substance, the substrate having a large number of hollow holes 2 1 can be easily formed.

  Hereinafter, the best mode for carrying out the present invention will be described.

  As shown in FIG. 2, the building board A of the present invention has a real part 10 and a real receiving part 11 at one end and the other end (end opposite to the one end) of the substrate 1 formed in a flat plate shape. Is formed by actual processing such as cutting or cutting. The actual part 10 and the actual receiving part 11 are provided so as to protrude over the entire length of each end of the substrate 1, and the thickness of the actual part 10 is formed to be approximately equal to the half of the surface side of the substrate 1 and the actual receiving part. The thickness of 11 is formed to be equal to the thickness of substantially half of the back surface side of the substrate 1. Further, the substrate 1 has a large number of hollow holes 2, 2,. The hollow hole 2 is formed over the entire substrate 1 including the actual part 10 and the actual receiving part 11, and is formed over the entire length in parallel with the longitudinal direction of the actual part 10 and the actual receiving part 11. Further, both ends of the hollow hole 2 are open to the other end of the substrate 1 where the real part 10 and the real receiving part 11 are not formed. Since the actual part 10 and the actual receiving part 11 are formed by actual processing as described above, the actual processing surface 3 of the substrate 1 formed by actual processing (including the surfaces of the actual part 10 and the actual receiving part 11). A part of the hollow holes 2 is exposed as groove-shaped drainage channels 2a on the end surface of the substrate 1.

  The building board A formed as described above is constructed as an exterior material such as a wall material of a building by arranging a plurality of the building boards vertically and horizontally, but the building board A, A adjacent in the horizontal direction is one building board A. The actual part 10 of the other building board A is actually joined and connected to the surface side of the actual receiving part 11. Accordingly, a large number of groove-like drainage channels 2a are opened in the gaps between the actual joint portions of the adjacent building boards A and A. Further, when the building board A is a wall exterior material, the hollow hole 2 and the groove-like drainage channel 2a are arranged to be long in the vertical direction (vertical direction), and when the building board A is a roof exterior material. The hollow hole 2 and the groove-like drainage channel 2a are arranged so as to be long in the inclination direction of the roof. And in the building board A of this invention, the water which permeated into the clearance gap of an actual junction part can be edge-cut by the drainage channel 2a, and after that, water can flow down and drain through the drainage channel 2a, and the back surface side of the building board A ( It is possible to prevent water from entering the indoor side and ensure waterproofness. Therefore, no packing is required unlike the conventional case.

In the building board A of the present invention, the number and diameter of the hollow holes 2 can be appropriately set according to the plate thickness and width dimension of the substrate 1, and the cross-sectional shape of the hollow holes 2 is circular, square, hexagonal. may be any of such, in order to perform the drainage efficiently, the opening width of the drainage channel 2a is preferably the cross-sectional area of the drainage channel 2a in 4mm or more and 6 mm ² or more. In addition, although there is no upper limit in particular in the opening width and cross-sectional area of the drainage channel 2a, in order to prevent the strength reduction of the building board A, it is preferable that the opening width is 10 mm or less and the cross-sectional area is 78 mm ² or less. Moreover, the building board A of this invention may provide the layer which thickens the surface side and the back surface side of the board | substrate 1, and forms an uneven | corrugated pattern etc.

  Further, in the above, an example of the joint joining is shown as an actual joining, but the present invention is not limited to this, and an actual joining composed of a male fruit 12 and a female fruit 13 may be used as shown in FIG. In this case, the surface of the male fruit 12 and the inner surface facing the female fruit 13 become the actual processing surface 3, and the drainage channel 2a is formed. In the above description, a large number of drainage channels 2a are formed on the actual machining surface 3. However, the present invention is not limited to this, and only one drainage channel 2a may be formed on the actual machining surface 3 as shown in FIG. . Moreover, as shown in FIG.4 (b), even if it forms the some drainage channel 2a in the actual process surface 3, you may form them in the position which does not oppose.

  The building board A of the present invention can be formed of any material such as inorganic, resin, and metal, but is formed of a cement-based inverse emulsion composition mainly composed of cement, water, and an oily substance. Materials can be used. As a result, the substrate 1 having a large number of hollow holes 2 can be easily formed by extrusion molding, and the water absorption is small, and freezing does not easily occur in cold regions. In this composition, the ratio of cement to water can be arbitrarily set, but the weight ratio is generally preferably in the range of 0.3 to 2 water with respect to cement 1.

  The cement is not particularly limited, but can include Portland cement, fly ash cement, blast furnace cement, alumina cement, high alumina cement, silica fume, etc. Two or more types can be used in combination.

  The oily substance is for forming an inverse emulsion (W / O emulsion) with water, and is not particularly limited. Usually, a hydrophobic liquid substance is used, for example, toluene, xylene, kerosene, styrene. , Divinylbenzene, methyl methacrylate, trimethylolpropane trimethacrylate, unsaturated polyester resin, and the like. These can be used alone or in combination of two or more. The blending amount of the oily substance is preferably in the range of 5 to 10% by volume with respect to the total amount of water and solid content in the cement-containing inverse emulsion composition.

  In addition to the above components, an emulsifier is preferably added to the cement-containing inverse emulsion composition. The emulsifier is blended to impart stability to the inverse emulsion. Ionic surfactants, various anionic surfactants, cationic surfactants, and the like can be used. The blending amount of the emulsifier is preferably in the range of 1 to 3% by volume with respect to the total amount of water and solid content in the cement-containing inverse emulsion composition.

  An appropriate amount of a reinforcing material and various additives can be further blended in the cement-containing inverse emulsion composition. Examples of reinforcing materials include aggregates such as gravel, perlite, shirasu balloon, glass powder, and alumina silicate, synthetic fibers such as polypropylene fiber, acrylic fiber, vinylon fiber, and aramid fiber, and reinforcement such as carbon fiber, glass fiber, and pulp. Mention may be made of fibers.

  Below, an example of the manufacturing method of the building board A is shown. First, an emulsifier (for example, coconut oil 1.0 to 2.0 parts by mass), 4.0 to 6.0 parts by mass of styrene monomer, 35.0 to 50.0 parts by mass of water, and appropriate amounts of a crosslinking agent and a polymerization initiator. To make an inverse emulsion. Next, 100 parts by mass of the inverse emulsion, 70 to 90 parts by mass of cement, 0.3 to 5.0 parts by mass of the weight-reducing material, and 1.0 to 2.0 parts by mass of reinforcing fibers are forcibly stirred or continuously. A cement-containing inverse emulsion composition is prepared by mixing with a mixer. Next, the cement-containing inverse emulsion composition is put into an extrusion molding machine to extrude a molded sheet. At this time, a die having a hollow cross-sectional shape to be molded is previously attached to the extruder. Thereafter, a molded sheet having a hollow cross-sectional shape extruded from an extruder is received by a tray. Next, the molded sheet is cured by steam curing, and then the surface and end surfaces are finished and cut into predetermined dimensions to form the substrate 1. Thereafter, the actual processing is performed to form the actual part 10 and the actual receiving part 11, and the building board A of the present invention can be obtained.

An example of embodiment of this invention is shown, (a) is sectional drawing, (b) is sectional drawing which shows a connection state, (c) is a partial perspective view. It is the perspective view which abbreviate | omitted a part same as the above. It is sectional drawing which shows the other example same as the above. The other example is the same, and (a) and (b) are cross-sectional views in which a part is enlarged. It is sectional drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substrate 2 Hollow hole 3 Actual processing surface A Building board

Claims (3)

By actually processing the end of the substrate having a large number of hollow holes, some of the hollow holes become groove-shaped drainage channels and are exposed to the actual processing surface, and the actual part formed by the actual processing is connected By doing so, the said hollow hole exposed to the said actual processing surface is formed so that it can oppose, The building board characterized by the above-mentioned . The building board according to claim 1, wherein a plurality of hollow holes are exposed over the entire actual processing surface. The building board according to claim 1 or 2 , wherein the substrate is formed of a cement-based molding material made of a cement-containing inverse emulsion composition mainly composed of cement, water, and an oily substance.

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