JP4467953B2 - Inorganic decorative building board and method for producing the same - Google Patents

Description

The present invention relates to an inorganic decorative building board suitable for use in an outer wall decorative board having a high-grade appearance such as a stone pattern, ceramic tile pattern, brick pattern, earth wall pattern, etc. of a building such as a house, and a manufacturing method thereof.

Conventionally, an inorganic composition containing cement as a main raw material is formed into an uncured inorganic mat by a wet papermaking method or a semi-dry molding method, and the surface of the inorganic mat is pressed with an embossing mold material so that the surface has an uneven pattern. After forming the cured inorganic board, the inorganic board is cured by curing or steam curing, and further by applying a sealer treatment, a concealing coloring coating, or a printing pattern on the surface, an inorganic cosmetic building having a concavo-convex pattern on the surface The method of manufacturing a plate is well known and is used as an outer wall material or the like.

On the other hand, in recent years, this kind of inorganic decorative building board tends to be preferred to have a high-grade decorative appearance such as stone pattern, ceramic tile pattern, brick pattern, earth wall pattern, etc. It has become artificial and it has been difficult to fully express the natural texture of these materials. Further, after the construction, the color coating film or ink deteriorates due to long-term use, and discoloration or coating film peeling may occur to impair the appearance. Furthermore, since many steps such as undercoating, intermediate coating, overcoating, sputter coating, and partial printing are applied to make up the surface, the production process becomes complicated and the productivity is poor.

In addition, when forming a concavo-convex pattern on the surface of the inorganic board by pressing the embossing mold material, it is possible to form a relatively large concavo-convex pattern in which the concave portion is a joint groove pattern and the convex portion is a decorative surface such as a stone pattern. For example, when a small concave pattern having a diameter of less than 2 mm is formed of an embossed mold material, the corresponding small convex portion of the embossed mold material is worn down by pressing, and thus the mold material cannot be repeatedly used. Furthermore, in the pressing with an embossing mold material, a concave part with a middle bulge cannot be formed due to pressing or demolding, so that the shape of the concave part that can be formed is limited. For this reason, it is not possible to form concave patterns with natural shapes such as stone patterns, ceramic tile patterns, brick patterns, earthen wall patterns, etc., only by pressing with an embossed mold material, and the natural texture of these materials is sufficient. I couldn't express it.

For this reason, as described in Patent Document 1 or 2, a fine concavo-convex pattern is also formed by spraying decorative powder particles such as silica sand. However, in this case, even though it can express a rough feeling and color change as if sand particles have adhered to the surface, natural cracks, nests, bubble marks, glaze marks of stones, ceramic tiles, bricks, dirt walls, etc. Such a concave pattern could not be expressed.
Japanese Patent Laid-Open No. 5-194059 JP-A-11-226491

The present invention has been made in view of such conventional problems, and can effectively express the natural texture of stones, ceramic tiles, bricks, earth walls, etc., and can significantly improve its decorativeness. It is an object of the present invention to provide a decorative building board and a method for producing an inorganic decorative building board capable of producing the inorganic decorative building board with high productivity.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above object, an inorganic decorative building board according to the invention of claim 1 has a decorative granular material fixed to the surface of an inorganic board having an embossed concavo-convex pattern, and a hot-melt resin piece. It was set as the structure by which the melting trace recessed part pattern which was heat-melted was formed. According to this, on the surface of an inorganic board having embossed uneven patterns such as stone pattern, ceramic tile pattern, brick pattern, etc., the texture of the material due to decorative granular material and the crack marks, nests, and bubble marks due to the melting trace concave pattern -It is possible to obtain an inorganic decorative building board having a natural and delicate texture that cannot be obtained by concealing colored coating, embossing molding, sand spraying, or the like, to which glaze-like melting marks are given.

The inorganic decorative building board according to the invention of claim 2 is configured such that the surface of the inorganic board is formed in a colored surface layer in the invention of claim 1. According to this, in addition to the effect of the invention of claim 1, since the inorganic board can be made to have a desired base color, the decorative powder particles fixed to the surface thereof and the formed melt trace recess It is possible to obtain an inorganic decorative building board having a pattern and a colored base material color which are exposed on the surface and which is further excellent in decoration.

In addition, if the base material surface color is the raw material color of an inorganic board, the expression of the material feeling which materials, such as a stone material, a ceramic tile, and a brick, have is limited in tone. In addition, when a concealing coloring coating such as enamel is applied and the cement color is painted, the decorative powder particles and the melted trace concave pattern are painted with the concealing coloring paint to become a monotone color, and a colored coating film. It may cause deterioration of the coating film or discoloration of the layer, and it may be necessary to replace the whole. In the invention of claim 2, since the surface of the inorganic board is formed in the colored surface layer, an inorganic decorative building board free from such problems can be obtained.

The inorganic decorative building board according to the invention of claim 3 is configured such that in the invention of claim 1 or 2, a part of the decorative granular material overlaps with the melt trace recess pattern. According to this, in addition to the effect of the invention of claim 1 or 2, it is possible to form a melted trace concave pattern in which decorative powder particles are mixed, and to obtain an inorganic decorative building board excellent in natural feeling and decorativeness. Can do.

The inorganic decorative building board according to the invention of claim 4 is configured such that in the invention of any one of claims 1 to 3, the inner surface of the melted trace recess is transparent or translucent. According to this, in addition to the effect of any one of the first to third aspects, the surface color of the base material of the inorganic plate is transmitted through or semi-transmitted through the melt trace concave pattern and appears in a deep appearance. An inorganic decorative building board can be obtained. In particular, when the surface of the inorganic board is formed on a colored surface layer, the color tone of this colored surface layer appears with a depth, so that the color tone suitable for the material can be expressed, and the decorativeness is further enhanced. be able to.

The inorganic decorative building board according to the invention of claim 5 is configured such that the inner surface of the melted trace recess is non-transparent in the invention of claims 1 to 3. According to this, in addition to the effect of the invention of any one of claims 1 to 3, any non-transparent color melt trace concave pattern, the substrate surface color of the inorganic board, and the decorative particulates It is possible to obtain an inorganic decorative building board with a variety of appearances that appeared together.

The inorganic decorative building board according to the invention of claim 6 is configured such that, in any one of the inventions of claims 1 to 5, the heat-meltable resin piece is a heat-meltable foamed resin piece. According to this, since the thermal contraction rate of the foamed resin piece is larger than that of the non-foamed resin piece, in addition to the effect of any one of the first to fifth aspects, an advantage that a large melted trace recess pattern can be efficiently formed There is. In addition, it is easy to form an intermediate-swelled melt trace recess pattern, and it is possible to obtain an inorganic decorative building board having a more complicated and highly decorative appearance.

According to a seventh aspect of the present invention, there is provided a method for producing an inorganic decorative building board comprising: a decorative granular material, a heat-meltable resin piece, and a surface of an uncured inorganic mat formed by molding a composition mainly composed of cement. Then, the uncured inorganic mat is pressed and pressed with an embossed concavo-convex mold plate to form an uncured inorganic plate having an embossed concavo-convex pattern in which decorative powder particles and a heat-meltable resin piece are semi-embedded. Subsequently, the uncured inorganic plate was steam-cured at a temperature equal to or higher than the melting point of the heat-meltable resin piece. According to this, the inorganic decorative building board having the effect of the invention of claim 1 can be manufactured with high productivity using the curing process.

The manufacturing method of the inorganic decorative building board according to the invention of claim 8 is configured such that, in the invention of claim 7, a coloring pigment is mixed in at least the composition forming the surface layer. According to this, in addition to the effect of the invention of claim 7, the inorganic decorative building board having the effect of the invention of claim 3 can be manufactured with high productivity.

The method for producing an inorganic decorative building board according to the invention of claim 9 is the invention of claim 7 or 8, wherein the mixture of the decorative granular material and the heat-meltable resin piece is sprayed on the surface of the uncured inorganic mat. Thus, the decorative granular material and the heat-meltable resin piece are arranged. According to this, in addition to the effect of the invention of claim 7 or 8, the decorative decorative board having the effect of the invention of any one of claims 1 to 6, the decorative granular material and the hot-melt resin piece Can be pre-mixed and sprayed at the same time to further improve productivity.

The method for producing an inorganic decorative building board according to the invention of claim 10 is the transfer sheet according to claim 7 or 8, wherein the decorative granular material and the heat-meltable resin piece adhere to the surface of the uncured inorganic mat. The decorative powder granule and the heat-meltable resin piece are arranged. According to this, since it can arrange | position only by mounting, without requiring the process and apparatus which sprinkle the granular material for decoration and a heat-meltable resin piece, The effect of invention of Claim 7 or 8 In addition, the inorganic decorative board having the effect of any one of claims 1 to 6 can be manufactured with higher productivity.

The manufacturing method of an inorganic decorative building board according to the invention of claim 11 is the embossing of the invention of claim 7 or 8, wherein the decorative granular material and the heat-meltable resin piece are attached in advance to the surface of the uncured inorganic mat. It was set as the structure which mounts an uneven | corrugated type | mold board and arranges the granular material for decoration and a heat-meltable resin piece. According to this, since it can arrange | position by only mounting the embossing uneven | corrugated type | mold board which adhered the granular material for decoration and the heat-meltable resin piece to the embossing uneven | corrugated type | mold board previously, invention of Claim 7 or 8 In addition to the effects described above, the inorganic decorative board having the effects of the inventions of claims 1 to 6 can be manufactured with higher productivity.

The manufacturing method of the inorganic decorative building board according to the invention of claim 12 is the invention according to any one of claims 7 to 11, wherein the heat-meltable resin piece is transparent or translucent when melted and solidified. According to this, in addition to the effect of any one of claims 7 to 11, an inorganic decorative board having the effect of the invention of claim 4 can be manufactured with high productivity.

According to a thirteenth aspect of the present invention, there is provided a method for producing an inorganic decorative building board according to any one of the seventh to eleventh aspects, wherein the heat-meltable resin piece is non-transparent when melted and solidified. According to this, in addition to the effect of any one of claims 7 to 11, an inorganic decorative board having the effect of the invention of claim 5 can be manufactured with high productivity.

According to a fourteenth aspect of the present invention, there is provided a method for producing an inorganic decorative building board according to any one of the seventh to thirteenth aspects, wherein the heat-meltable resin piece is a heat-meltable resin foamed resin piece. According to this, in addition to the effects of any one of the seventh to thirteenth inventions, the inorganic decorative board having the effects of the invention according to the fifth aspect can be manufactured with high productivity.

1-3 is explanatory drawing of the inorganic decorative building board (A) which is embodiment of this invention, FIG. 1 is the fragmentary top view, FIG. 2 is a fragmentary sectional view, FIG. 3 is a fragmentary enlarged view. . 1-3, the inorganic decorative building board (A) is an inorganic board (1) made of a wood cement board formed in a three-layer structure of a colored surface layer (1a), a core layer (1b), and a back layer (1c). ) Is provided with a stone pattern decorative surface convex portion (2) and joint groove-shaped concave portion (3), and the decorative surface convex portion (2) is a small uneven portion representing the unevenness of the surface of the stone itself. (2a) is provided.

And, on the colored surface layer (1a) of the convex part on the decorative surface (2), the decorative powder particles (5) are fixed in an arbitrary pattern, and one of the decorative powder particles (5). A large number of melting trace recesses (4) are provided so as to overlap the part, and a melting trace recess pattern is formed. And the colored surface layer (1a) is exposed in the surface in which the decorative granular material (5) is not fixed or the surface where the melted trace recess (4) is not formed. Further, the inner surface layer (4a) of the melted trace recess (4) is formed to be transparent or translucent, and the inner surface layer (4a) is transmitted or translucent to deepen the colored surface layer (1a). It appears in a certain color.

Furthermore, the decorative granular material (5a) having a color tone different from the color tone of the colored surface layer (1a) exposed on the surface of the decorative surface convex portion (2) is fixed to the surface of the joint groove-shaped concave portion (3). Thus, the decorative surface convex portion (2) and the joint groove-shaped concave portion (3) are clearly divided in color tone. Although not shown, a transparent or translucent sealer coating layer and a transparent or translucent surface coating layer are provided on the surface of the inorganic plate (1) on which these decorations are applied. Thus, the inorganic decorative building board (A) according to this embodiment is formed.

In addition, in the inorganic decorative building board (A) of the present embodiment, the inorganic board (1) is exemplified by a wood cement board, but is not limited thereto, and is not limited thereto, a cement board, a cement calcium silicate board, a pulp cement board. The hardened | cured material of the composition which uses cement as a main raw material, the thing which consists of a slag gypsum board and a magnesium carbonate board can also be used.

Moreover, although the thing of the 3 layer structure which consists of a colored surface layer (1a), a core layer (1b), and a back surface layer (1c) was shown as an inorganic board (1), it is not restricted to this. For example, one having a surface that is not formed in a colored layer, one having a single layer or a multilayer structure in which all layers are colored, or one having a multilayer structure in which front and back layers are colored can be used.

In addition, it is preferable to form these inorganic plates (1) at least at the surface layer on the colored surface layer (1a) because the decorativeness and weather resistance can be improved. Such a colored surface layer (1a) has a desired color tone by adding a colored pigment mainly composed of inorganic pigments such as iron oxide, titanium oxide, carbon black and chromium oxide to the composition constituting the surface layer. Can be formed.

Further, in the inorganic decorative building board (A) of the present embodiment, a stone-patterned decorative face convex part (2) and joint groove-shaped concave part (3) are provided on the surface of the inorganic board (1), and the decorative surface convex part is further provided. Although the portion (2) is provided with the small uneven portion (2a) representing the surface unevenness of the stone material itself, it is not limited to this. For example, the decorative surface convex portion (2) can be provided with various patterns such as a ceramic tile pattern, a brick pattern, a clay wall pattern, and a painted wall pattern, and the joint surface groove-shaped concave portion (3) is not provided. The convex portions (2) can be pressed against each other to form a construction appearance, and further, the surface of the decorative convex portion (2) can be formed into a flat surface without providing the small uneven portion (2a).

Examples of the decorative granular material (5) include, for example, ore, ceramics, glass, rock wool, colored resin pulverized powder, sand, colored sand, artificial colored aggregate, mica, natural, synthetic Inorganic pigments such as iron oxides, titanium oxide, carbon black, and chromium oxide can be used. Moreover, such a decorative granular material (5) can also be used in combination of a plurality of different materials and shapes. The decorative granular material (5) is not particularly limited in its material and shape, but it is preferable to use one having a diameter of less than 3 mm, which hardly causes discoloration. This is because if the diameter exceeds 3 mm, the adhering powder for decoration (5) tends to be noticeable and unnatural.

Such a decorative granular material (5) needs to be scattered and fixed in a substantially uniform or non-uniform pattern on the surface of the decorative surface convex portion (2). As a result, the colored surface layer (1a) can appear on the surface of the decorative surface convex portion (2) at the portion where the decorative granular material (5) is not fixed. If the decorative granular material (5) adheres to the entire surface of the decorative surface convex portion (2) without any gaps, the colored surface layer (1a) does not appear on the surface of the decorative surface convex portion (2). is there.

On the other hand, as the decorative granular material (5a) fixed to the surface of the joint groove-shaped concave portion (3), it is used for the decorative granular material (5) fixed to the decorative surface convex portion (2). The same material and shape can be used, and the color tone can be changed between the two. Moreover, the adhering state may be a state in which the color tone of the colored surface layer (1a) exposed on the surface of the decorative surface convex portion (2) and the color tone of the joint groove-shaped concave portion (3) can be distinguished in color tone. . That is, the decorative granular material (5a) can be firmly fixed in a state where the colored surface layer (1a) on the surface of the joint groove-shaped recess (3) is substantially concealed, in a scattered state. Even when fixed to the surface, the mixed color tone of the colored surface layer (1a) on the surface of the joint groove-shaped recess (3) and the decorative powder particles (5a) fixed in a scattered state is a decorative surface convex portion (2 The color tone of the colored surface layer (1a) exposed on the surface of (1) may be different from the color tone.

The shape of the melted trace recess (4) is not particularly limited, and can be formed in any shape such as a hemispherical shape, a semi-elliptical spherical shape, a crack shape, a fiber shape, a polygonal shape, or an indefinite shape. Moreover, as shown in the partial enlarged view of FIG. 3, it can also form in the shape of a middle bulge whose internal diameter is larger than the surface opening diameter. Such a swelled concave recess portion (4) cannot be formed by embossing, and is a natural non-uniformity of the material, such as cracks and nests in stone, bubble marks in ceramic tiles and bricks, and traces of glaze melting. This is preferable because the part can be expressed more realistically.

The inner surface layer (4a) of the melted trace recess (4) is a melt-solidified layer of a heat-meltable resin made of a thermoplastic resin such as an acrylic resin, a styrene resin, an olefin resin, or a vinyl resin. The inner surface layer (4a) formed is not limited to the transparent or translucent layer as in the above-described embodiment, but may be an opaque layer colored in an arbitrary color. Further, a transparent or translucent material and an opaque material can be mixed. Further, a part or all of the inner surface layer (4a) may be formed by a melt-solidified layer in which the hot-melt resin penetrates into the colored surface layer (1a) and solidifies. A deeper feeling can be given to the trace recess (4).

Furthermore, such a melt trace recess (4) is formed by whether the resin of the heat-meltable resin piece used to form the melt-free resin is a non-foamed resin or a foamed resin, or in the case of a foamed resin, The shape of the melted trace recess (4) and the thickness of the inner surface layer (4a) are different, and the texture is also different. The large melting trace recess (4) and the thin inner layer (4a) use a highly foamed heat-meltable resin piece, and the thick inner layer (4a) and the small recess (4) are non-foamed or low-foamed hot melt. It can be formed using a conductive resin piece. In addition, such a melted trace recess (4) may be a mixture of a plurality of types derived from non-foamed resin, derived from foamed resin, or derived from foamed resin having different expansion ratios. In this case, the melted trace recess (4) can be formed with more variety.

As is clear from the above description, the inorganic decorative building board (A) according to this embodiment has a stone-patterned decorative face convex part (2) and a joint groove on the colored surface layer (1a) of the inorganic board (1). A concave part (3) is provided, and the decorative powder (5) is fixed to the surface of the decorative convex part (2) and transparent so as to overlap with a part of the decorative powder (5). Or a translucent melt trace recess (4) is provided, and the surface of the joint groove recess (3) has a decorative powder (5a) having a color tone different from the color tone of the colored surface layer (1a). ) Are fixed, and a transparent or translucent sealer coating or top coating is applied thereon.

Thereby, the base color of the colored surface layer (1a) exposed on the surface of the decorative surface convex part (2), the color tone of the decorative powder (5) and the melted trace concave part (4) and the fine uneven feeling The inorganic decorative building board (A) that appears on the surface of the decorative convex part (2) in a transparent or translucent state and that expresses the natural texture and unevenness of the stone material more realistically. it can.

In addition, the inner layer (4a) of the transparent or translucent melting trace recess (4) has a decorative powder (5) and a colored surface layer (1a) overlapping the melting trace recess (4). Appearing in a transparent or semi-transmissive state to give a deeper feeling, and further, by applying the decorative powder granule (5a) fixed to the surface of the joint groove-shaped concave portion (3), a decorative surface convex portion ( 2) and the joint groove-shaped recess (3) are formed in the appearance of joint groove construction with good decorativeness, clearly separated in color.

Next, based on (a)-(e) of FIG. 4, the manufacturing method of the inorganic decorative building board (A) which is embodiment of this invention is demonstrated. (A) of FIG. 4 shows the uncured inorganic mat (10), which is formed in a three-layer configuration of a front surface layer (10a), a core layer (10b), and a back surface layer (10c). The front surface layer (10a) and the back surface layer (10c) are the same composition and are colored in a desired color by mixing the color pigments described above. (11) is a support plate.

Although not shown, this uncured inorganic mat (10) is formed by semi-dry molding a semi-dry molding composition prepared by mixing raw materials mainly composed of cement and wood material. ing. For example, from the forming head of the semi-dry molding apparatus, the respective semi-dry molding compositions are dropped and deposited on the support plate (11) placed on the conveyor in the order of the back layer, the core layer, and the surface layer. Can be formed.

Here, as the cement, Portland cement, slag cement, alumina cement, silica cement, fly ash cement, magnesia cement, or a mixture of these cements with siliceous materials such as cinnabar sand, shirasu, and meteorite powder is used. it can.

Moreover, wood chips, wood flakes, wood fibers, pulp, bleached pulp, sawdust and the like can be used as the woody material. And as a raw material of these woody materials, it is also possible to use a woody waste material such as a building waste material or a regenerated crushed material of a woody cement board waste material.

In the semi-dry molding composition, the wood materials to be used are different for the front and back layers and the core layer. For the front and back layers, use a fine wooden material such as pulp and fine wood flakes to improve surface properties, and for the core layer, use a rough wooden material such as wood flakes and lighter weight. It is supposed to be. And, for this, water necessary for hydration of cement and, if necessary, lightweight materials made of inorganic foams such as pearlite and shirasu balloons, reinforcing materials such as synthetic resin fibers and glass fibers, and hardening acceleration It is prepared by adding and mixing chemicals such as an agent, an efflorescence inhibitor and a water resistance imparting agent. In addition, in the composition for front and back layers, as described above, a color pigment is mixed.

Specific examples of such front and back surface layer and core layer semi-dry molding compositions are as follows. For front and back layers, 50 parts by weight of Portland cement, 18 parts by weight of siliceous material, pulp and fine Examples thereof include 15 parts by weight of a wood material mainly composed of wood flakes, 2 parts by weight of a coloring pigment, 38 parts by weight of water, and 15 parts by weight of pearlite. Examples of the core layer include 50 parts by weight of Portland cement, 20 parts by weight of siliceous material, 15 parts by weight of wood flakes, 42 parts by weight of water, and 15 parts by weight of pearlite.

In addition, when bleached kraft pulp is used as the wood material for the front and back layers, the stain unevenness derived from the wood material component appears on the surface of the inorganic decorative building board (A) by the steam curing treatment which is a subsequent process. Can be suppressed, which is preferable.

Since the uncured inorganic mat (10) thus obtained is composed of a deposit of a semi-dry molding composition containing a wood material, it is bulky and is particularly hot-meltable during the subsequent pressing and pressing step. Since the resin piece (6) can be satisfactorily embedded in a semi-embedded state, it is preferable.

Here, the uncured inorganic mat (10) is not limited to the composition, the forming means, and the layer configuration described above. For example, one obtained by semi-dry molding a cement composition for semi-dry molding that does not contain wood material, one formed by wet papermaking, one with a single layer structure or two layers, all layers are colored with a color pigment The surface layer may be formed of a combination of these, or a surface layer that is not colored with a coloring pigment.

Next, on the surface of the uncured inorganic mat (10) thus obtained, as shown in FIG. 4 (b), from above, the decorative granular material (5) and the hot-melt resin piece (6) is dispersed as a mixture (7) in which both are mixed.

In addition, the means for arranging the decorative granular material (5) and the heat-meltable resin piece (6) on the surface of the uncured inorganic mat (10) is limited to that for spraying the mixture (7). It is not a thing. For example, as shown in FIG. 5, a method for distributing the decorative powder particles (5) and the heat-meltable resin pieces (6) separately without mixing, the decorative powder particles (5) in advance, as shown in FIG. And a method of placing the transfer sheet (12) on which either one or both of the hot-melt resin pieces (6) or both are placed on the surface of the uncured inorganic mat (10), or FIG. As shown, after a liquid material such as a mold release agent and a viscous liquid is applied to the inside of the embossing mold material (13) in advance, the decorative granular material (5) and a hot-melt resin piece are applied to the coated surface. An embossing mold material (13) to which either or both of (6) is attached is prepared, and this embossing mold material (13) is placed on the surface of the uncured inorganic mat (5). There is a way.

As described above, in the case where the decorative granular material (5) and the heat-meltable resin piece (6) are previously attached to the transfer sheet (12) or the embossing mold material (13), these transfer materials are transferred. Since the sheet (12) and the embossing mold material (13) can be arranged simply by placing them on the surface of the uncured inorganic mat (10), compared to the case where a spraying device is installed and sprayed in the production line. Productivity can be improved.

In addition, the materials and shapes of the decorative granular material (5) and the heat-meltable resin piece (6) that can be used here are those described in the description of the inorganic decorative building board (A) of the present embodiment. Similar ones can be used. However, the heat-meltable resin piece (6) needs to be melted by heat in a subsequent steam curing process.

In the manufacturing method of the inorganic decorative building board (A) of the present embodiment, since the wood material is mixed in the composition, the maximum temperature of the steam curing is less than 180 ° C. so that the wood material is not thermally deteriorated. Therefore, it is possible to select a heat-meltable resin piece (6) that is heat-melted at a temperature of less than 180 ° C.

Next, as shown in FIG. 4 (c), as described above, an uncured inorganic mat (10) in which the decorative granular material (5) and the hot-melt resin piece (6) are arranged on the surface. After the embossing mold material (13) is placed on the surface, it is pressed and pressed to form an uncured inorganic plate (14) shown in FIG. 4 (d). The method of pressing and pressing is not particularly limited. For example, a laminate composed of a support plate (11), an uncured inorganic mat (10), and an embossing mold material (13) is taken as one set, and a plurality of the laminates are set. This can be done by pressing and pressing the deposited deposit.

In the manufacturing method of the inorganic decorative building board (A) of the present embodiment, the embossing mold material (13) to be used is a convex part (13a) for forming the joint groove-like concave part (3) and a decorative surface convex part ( 2) and a concave and convex portion (13b) for forming the surface and a small concave and convex portion for forming small concave and convex portions of the stone on the surface of the decorative surface convex portion (2).

Then, on the surface of the convex portion (13a) for forming the joint groove-shaped concave portion (3), as shown in FIG. 4 (c) or FIG. The powdery granular material (5a) is adhered. The method for attaching the decorative granular material (5a) to the surface of the convex part (13a) is not particularly limited. For example, the surface of the convex part (13a) or the convex part ( A method of applying a release agent such as mineral oil to the surface of the embossing mold material (13) containing 13a), and spraying the decorative granular material (5a) on the coated surface, or applying the release agent The convex part (13a) of the formed embossing mold material (13) can be performed by a method of pressing and adhering to the flat surface on which the decorative granular material (5a) is spread or the spread surface of the container.

By this pressure and compression, the uncured inorganic mat (10) is compressed to a predetermined thickness, and the stone pattern decorative face convex portion (2) and small concave and convex portion (2a), the joint groove concave portion (3), An embossed concavo-convex pattern consisting of is formed on the uncured inorganic plate (14) rolled on the surface. And the decorative granular material (5) (5a) and the heat-meltable resin piece (6) arranged on the surface of the uncured inorganic mat (10) are unprinted with the embossed uneven pattern of the stone pattern. It adheres to or adheres to the colored surface layer (14a) of the cured inorganic plate (14) in a semi-embedded state.

Here, the semi-embedded state means that at least a part of the decorative powder particles (5) (5a) and the heat-meltable resin piece (6) are exposed from the colored surface layer (14a) of the uncured inorganic board (14). It is the state of being buried so as to. Therefore, it is preferable that a part of the decorative granular material (5) (5a) and the heat-meltable resin piece (6) is embedded in the colored surface layer (14), but in the colored surface layer (14a). It does not include those completely buried and invisible from the surface.

Next, the pressure-pressed deposit as described above is primarily cured for a few hours to a few dozen hours at a temperature of about 50 ° C. to 80 ° C. in this state of deposition. By this primary curing, the uncured inorganic plate (14) is in a semi-cured state, and appropriate strength is imparted. At this point, the deposits are semi-cured uncured inorganic plate (14), embossing mold material. (13) Disassembled into the support plate (11), and the uncured inorganic plate (14) is conveyed to the next step. The disassembled embossing mold material (13) and the support plate (11) are reused. This primary curing can be omitted.

The uncured inorganic plate (14) obtained in this way is stacked and stacked for steam curing. When the wooden material is mixed in the inorganic board (1) like the inorganic decorative building board (A) of the present embodiment, the highest level is achieved so that the wooden material does not undergo thermal deterioration during steam curing. It is desirable to perform steam curing for several hours to several tens of hours under heated steam having a temperature of less than 180 ° C.

Prior to this steam curing, a transparent or translucent sealer coating can be applied to the surface of the uncured inorganic plate (14). The formation of a sealer layer by sealer coating before steam curing is preferable because it can suppress the occurrence of efflorescence and color unevenness that are likely to occur during steam curing.

By this steam curing, the uncured inorganic plate (14) is sufficiently cured to become the inorganic plate (1). The colored surface layer (1a) of the inorganic plate (1) is melted by a melted trace recess (4) formed by melting the hot-melt resin piece (6) embedded in the semi-embedded state. A concave pattern is formed.

Further, by applying a transparent or translucent paint to the surface, (e) in FIG. 4 or the inorganic decorative building board (A) shown in FIGS. 1 to 3 is manufactured.

It is a partial top view of the inorganic makeup | decoration building board (A) which concerns on embodiment of invention. It is a fragmentary sectional view of an inorganic makeup | decoration building board (A) same as the above. It is the elements on larger scale of the fusion trace recessed part (4) of an inorganic decorative building board (A) same as the above. (A)-(e) It is process explanatory drawing of the manufacturing method of the inorganic decorative board (A) which concerns on embodiment of this invention. It is sectional drawing of a transfer sheet (12). It is sectional drawing of the embossing shaping | molding die material (13) which concerns on a modification. It is a partial expanded sectional view of the embossing molding material (13) used for the manufacturing method of the inorganic decorative building board (A) which concerns on embodiment of this invention.

Explanation of symbols

(A) Inorganic decorative building board (1) Inorganic board (1a) Colored surface layer (1b) Core layer (1c) Back layer (2) Makeup convex part (2a) Small uneven part (3) Joint groove-like concave part (4) ) Melting trace recess (4a) Inner surface layer (5) (5a) Decorative powder (6) Hot melt resin piece (7) Mixture (10) Uncured inorganic mat (10a) Surface layer (10b) Core layer ( 10c) Back layer (11) Support plate (12) Transfer sheet (13) Embossing mold material (13a) Convex part (13b) Concave part (14) Uncured inorganic plate (14a) Colored surface layer

Claims (7)

An uncured inorganic mat formed by semi-dry molding a cement and a wood raw material as a main material, wherein the uncured inorganic mat is mixed with a color pigment in at least a composition forming a surface layer After arranging the decorative powder granules and the heat-meltable resin piece on the surface,
Pressurizing and pressing the uncured inorganic mat with an embossed uneven template,
Formed on an uncured inorganic board having an embossed concavo-convex pattern in which decorative granule and heat-meltable resin piece are semi-embedded,
A method for producing a wood cement decorative building board, characterized in that the uncured inorganic board is steam-cured at a temperature equal to or higher than the melting point of the heat-meltable resin piece. Uncured mineral mat surface, placing a decorative powder granules and decorative powder granules and the mixture was sprayed with hot-melt resin piece and the hot-melt resin piece in claim 1, wherein A method for producing the wood cement decorative building board described. It is characterized in that a decorative sheet and a heat-meltable resin piece are placed on the surface of the uncured inorganic mat, and the decorative powder and the heat-meltable resin piece are arranged. The manufacturing method of the wood cement decorative building board of Claim 1 . An embossed concavo-convex template on which the decorative powder particles and the heat-meltable resin pieces are previously attached is placed on the surface of the uncured inorganic mat, and the decorative powder particles and the heat-meltable resin pieces are arranged. method for producing a wood cement decorative building board according to claim 1, wherein. The method for producing a wood cement decorative building board according to any one of claims 1 to 4 , wherein the heat-meltable resin piece is transparent or translucent when melted and solidified. The method for producing a wood cement decorative building board according to any one of claims 1 to 4 , wherein the heat-meltable resin piece is non-transparent when melted and solidified. The method for producing a wood cement decorative building board according to any one of claims 1 to 6 , wherein the heat-meltable resin piece is a heat-meltable resin foamed resin piece.

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