Building materials, decorative members, and manufacturing method of decorative members

Abstract

A construction material 100 is provided with a base material 5. Low gloss regions 41 having a 60-degree gloss value of less than 8, and high gloss regions 42 having a 60-degree gloss value of 8 or more are present on the base material 5. The difference between the 60-degree gloss values of the low gloss regions 41 and the high gloss regions 42 is 5 or more.

Description

[Technical Field]

[0001] The present invention relates to a building material, a decorative member, and a method for manufacturing a decorative member. [Background technology]

[0002] Patent Document 1 discloses an inorganic decorative board. This inorganic decorative board is formed by providing a first clear layer on the entire surface of an inorganic decorative board substrate having large irregularities on its surface, and additionally providing a second clear layer only on the convex parts of the substrate. Each clear layer contains a predetermined amount of resin beads of a predetermined particle size, which allows the gloss and finish to differ between the convex parts and the joint parts.

[0003] However, the inorganic decorative boards can have the problem that the designs that can be expressed are limited.

[0004] An object of the present invention is to provide a building material, a decorative member, and a method for manufacturing a decorative member that can broaden the range of designs that can be expressed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-315364 Summary of the Invention

[0006] A building material according to one embodiment of the present invention includes a substrate having a low-gloss region with a 60-degree gloss value of less than 8 and a high-gloss region with a 60-degree gloss value of 8 or greater. The difference in 60-degree gloss value between the low-gloss region and the high-gloss region is 5 or greater.

[0007] A decorative member according to one aspect of the present invention includes the building material and a coating film structure formed on the building material, wherein the low gloss region and the high gloss region are present on the coating film structure.

[0008] A method for manufacturing a decorative member according to one embodiment of the present invention includes the steps of preparing a substrate, applying a primer coating containing aggregate to the substrate to form a primer coating film having a thickness smaller than the average particle diameter of the aggregate, and applying a topcoat coating to the primer coating film to form a topcoat coating film having a thickness smaller than the difference between the average particle diameter of the aggregate and the thickness of the primer coating in areas to be low-gloss regions, and forming a topcoat coating film having a thickness equal to or greater than the difference between the average particle diameter of the aggregate and the thickness of the primer coating in areas to be high-gloss regions. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic cross-sectional view showing a building material according to a first embodiment. [Figure 2] FIG. 2 is a schematic cross-sectional view showing a building material according to a second embodiment. [Figure 3] FIG. 3 is a schematic cross-sectional view showing a decorative member according to a third embodiment. [Figure 4] FIG. 4 is a schematic cross-sectional view showing a decorative member according to a fourth embodiment. [Figure 5] FIG. 5 is a schematic cross-sectional view showing a decorative member according to a fifth embodiment. [Figure 6] FIG. 6 is a schematic cross-sectional view showing one step of the method for producing the decorative member. [Figure 7] FIG. 7 is a schematic cross-sectional view showing one step of the method for producing the decorative member. [Figure 8] FIG. 8 is a schematic cross-sectional view showing one step of the method for producing the decorative member. [Figure 9] FIG. 9 is a schematic cross-sectional view showing a decorative member according to a sixth embodiment. [Figure 10] FIG. 10 is a schematic plan view showing a building material according to the seventh embodiment. [Figure 11] FIG. 11 is a schematic cross-sectional view showing a main part of the above building material. [Figure 12] FIG. 12 is a schematic cross-sectional view showing a decorative member according to an eighth embodiment. [Figure 13]FIG. 13 is a graph showing the measurement results of the 60-degree gloss values ​​of wood, brick, stone, and tile. DETAILED DESCRIPTION OF THE INVENTION

[0010] (1) First embodiment (1.1) Overview First, an overview of a building material 100 according to the first embodiment will be described. FIG. 1 shows the building material 100 according to this embodiment. The building material 100 includes a base material 5. A low-gloss region 41 and a high-gloss region 42 are present on the base material 5. The low-gloss region 41 has a 60-degree gloss value of less than 8. The high-gloss region 42 has a 60-degree gloss value of 8 or more. Furthermore, the difference in 60-degree gloss value between the low-gloss region 41 and the high-gloss region 42 is 5 or more. In this way, the building material 100 has a mixture of two regions with different gloss (the low-gloss region 41 and the high-gloss region 42), which can broaden the range of designs that can be expressed.

[0011] (1.2) Details The building material 100 according to the first embodiment will be described in more detail below with reference to FIG. 1 and other figures. For the convenience of explaining positional relationships, arrows indicating the X-axis, Y-axis, and Z-axis that constitute a three-dimensional Cartesian coordinate system are shown in the drawings, but these arrows do not actually represent any physical objects. Hereinafter, the XY plan view refers to the view along the Z-axis direction (the thickness direction of the building material 100 and the decorative member 10). The directions of the X-axis, Y-axis, and Z-axis are merely examples and are not intended to limit the directions of the building material 100 and the decorative member 10 during manufacture and use. Furthermore, the building material 100 and the decorative member 10 are shown schematically in the drawings, and various dimensional relationships in the drawings may differ from the actual ones.

[0012] <Building materials> FIG. 1 shows a building material 100 according to this embodiment. The building material 100 is used, for example, as an exterior material. Exterior materials include exterior wall materials and roofing materials. The building material 100 is a plate-shaped member. The building material 100 has a substantially rectangular shape when viewed in the XY plane.

[0013] The building material 100 according to this embodiment includes a substrate 5. The substrate 5 is not particularly limited, but examples thereof include ceramic siding, resin siding, and metal siding. The shape of the substrate 5 is not particularly limited, but examples thereof include a plate shape. In this embodiment, the substrate 5 is plate-shaped. The substrate 5 is substantially rectangular in XY plane view. The substrate 5 has a first surface 501 and a second surface 502. The first surface 501 is a surface facing in the positive direction of the Z axis. The second surface 502 is a surface opposite the first surface 501 and facing in the negative direction of the Z axis. In this way, the first surface 501 and the second surface 502 form the front and back surfaces of the substrate 5.

[0014] In this embodiment, the surface of the building material 100 has a low-gloss region 41 and a high-gloss region 42. More specifically, the first surface 501 of the substrate 5 has the low-gloss region 41 and the high-gloss region 42. The second surface 502 of the substrate 5 is a flat surface.

[0015] The low gloss region 41 is a region that has a lower gloss than the high gloss region 42. Specifically, the 60-degree gloss value of the low gloss region 41 is less than 8. This allows the appearance of the low gloss region 41 to resemble, for example, wood, brick, stone, and tile (low gloss tile). A low gloss tile is a tile that has a 60-degree gloss value of less than 8. The 60-degree gloss value is defined, for example, in JIS Z8741:1997. The 60-degree gloss value can be measured using a known gloss meter.

[0016] Here, Figure 13 is a graph showing the measurement results of the 60-degree gloss value of actual wood (6 types), brick (2 types), stone (4 types), and tile (8 types). The vertical axis of the graph shown in Figure 13 is the 60-degree gloss value, and the horizontal axis is the sample number. The sample numbers and specific sample names are as shown in Table 1 below.

[0017] [Table 1]

[0018] The lower limit of the 60-degree gloss value of the low-gloss region 41 is not particularly limited, but is, for example, 0. Glazed tiles A to C, Nos. 18 to 20, are high-gloss tiles. High-gloss tiles are tiles with a 60-degree gloss value of 8 or more.

[0019] In this embodiment, the surface roughness Ra of the low-gloss region 41 is 1.5 μm or more. A surface roughness Ra of 1.5 μm or more makes it easier to reduce the gloss of the low-gloss region 41. In this specification, "surface roughness Ra" means the arithmetic mean roughness defined in JIS B0601:2001. The surface roughness Ra can be measured using a known surface roughness measuring instrument. The upper limit of the surface roughness Ra of the low-gloss region 41 is not particularly limited, but is, for example, 800 μm.

[0020] The number of low-gloss regions 41 on the surface of the building material 100 is at least one or more. The gloss, surface roughness Ra, size, and shape of one low-gloss region 41 are not particularly limited. When multiple low-gloss regions 41 are present on the surface of the building material 100, the gloss, surface roughness Ra, size, and shape of these low-gloss regions 41 may be the same or different. The area occupied by the at least one or more low-gloss regions 41 on the surface of the building material 100 is also not particularly limited.

[0021] On the other hand, the high-gloss region 42 is a region with a higher gloss than the low-gloss region 41. Specifically, the 60-degree gloss value of the high-gloss region 42 is 8 or more. This allows the appearance of the high-gloss region 42 to be made closer to that of tiles (high-gloss tiles), for example (see FIG. 13 and glazed tiles A to C, Nos. 18 to 20, in Table 1).

[0022] Preferably, the 60-degree gloss value of the high-gloss region 42 is within a range of 70 or more and 150 or less. When the 60-degree gloss value of the high-gloss region 42 is 70 or more, the difference in gloss between the low-gloss region 41 and the high-gloss region 42 can be further accentuated. On the other hand, when the 60-degree gloss value of the high-gloss region 42 is 150 or less, the building material 100 can be prevented from becoming highly glossy overall.

[0023] Furthermore, in this embodiment, the difference in 60-degree gloss value between the low-gloss region 41 and the high-gloss region 42 is 5 or more. The difference in gloss between the low-gloss region 41 and the high-gloss region 42 stands out, allowing accents to be added to the possible designs.

[0024] Preferably, the surface roughness Ra of the high-gloss region 42 is smaller than the surface roughness Ra of the low-gloss region 41. This further accentuates the difference in gloss between the low-gloss region 41 and the high-gloss region 42. Specifically, the surface roughness Ra of the high-gloss region 42 is preferably less than 1.5 μm. A surface roughness Ra of less than 1.5 μm makes it easier to increase the gloss of the high-gloss region 42. The lower limit of the surface roughness Ra of the high-gloss region 42 is not particularly limited, but is, for example, 0.01 μm.

[0025] The number of high-gloss regions 42 on the surface of the building material 100 is at least one or more. The gloss, surface roughness Ra, size, and shape of one high-gloss region 42 are not particularly limited. When multiple high-gloss regions 42 are present on the surface of the building material 100, the gloss, surface roughness Ra, size, and shape of these high-gloss regions 42 may be the same or different. The area occupied by the at least one or more high-gloss regions 42 on the surface of the building material 100 is also not particularly limited.

[0026] <Manufacturing methods for building materials> The building material 100 according to this embodiment can be manufactured by preparing a base material 5 and using a combination of a means for increasing the surface roughness Ra and a means for decreasing the surface roughness Ra on the first surface 501 of the base material 5. Means for increasing the surface roughness Ra include, but are not limited to, grinding. On the other hand, means for decreasing the surface roughness Ra include, but are not limited to, casting, pressing, and polishing. The means for increasing the surface roughness Ra and the means for decreasing the surface roughness Ra can be selected appropriately depending on the material of the base material 5.

[0027] The low-gloss region 41 can be formed by using a means for increasing the surface roughness Ra of the first surface 501 of the substrate 5. The low-gloss region 41 can have an uneven surface 410.

[0028] On the other hand, by using a means for reducing the surface roughness Ra of the first surface 501 of the substrate 5, it is possible to form the high-gloss region 42. The high-gloss region 42 may have a non-textured surface 420. The non-textured surface 420 includes a flat surface in the strict sense, but also includes, in addition to a flat surface, a surface that is less textured than the texture of the textured surface 410 of the low-gloss region 41.

[0029] In this manner, the building material 100 shown in Fig. 1 is obtained. This building material 100 has two regions with different glossiness (a low-gloss region 41 and a high-gloss region 42), which allows for a wider range of possible designs.

[0030] (2) Second embodiment The building material 100 according to the second embodiment will be described below with reference to Fig. 2 etc. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof may be omitted.

[0031] <Building materials> Fig. 2 shows a building material 100 according to this embodiment. In the second embodiment, the substrate 5 is different from the substrate 5 of the first embodiment (see Fig. 1). Specifically, in this embodiment, the substrate 5 has recessed portions 51 and protruding portions 52. At least one recessed portion 51 and at least one protruding portion 52 are present.

[0032] The recesses 51 and the protrusions 52 are formed on a first surface 501 of the substrate 5. In other words, the first surface 501 is an uneven surface. A second surface 502, which is the surface opposite to the first surface 501, is a flat surface.

[0033] Here, the uneven surface formed by the recesses 51 and the protrusions 52 differs from the uneven surface 410 of the first embodiment in the dimension or degree of the unevenness. That is, the recesses 51 of the base material 5 are not particularly limited, but examples thereof include joints. That is, the recesses 51 are groove-shaped. The shape of the recesses 51 in the XY plane view is not particularly limited. For example, in the XY plane view, the recesses 51 may extend in a certain direction (the X-axis direction or the Y-axis direction), or may extend in both the X-axis direction and the Y-axis direction to form a lattice shape. When the recesses 51 of the base material 5 are joints, the protrusions 52 of the base material 5 are portions other than the joints (for example, tile-shaped portions) (see, for example, FIG. 10 described later).

[0034] The first surface 501 includes a bottom surface 511, an inner surface 521, and an outer surface 531. The inner surface 521 is a surface interposed between the bottom surface 511 and the outer surface 531.

[0035] The recess 51 is composed of a bottom surface 511 and an inner surface 521. On the other hand, the protrusion 52 is composed of an outer surface 531 and an inner surface 521. Since the recess 51 and the protrusion 52 are relative concepts, the inner surface 521 is a component of both the recess 51 and the protrusion 52.

[0036] When the base material 5 is held horizontally with the first surface 501 of the base material 5 facing upward (positive direction of the Z axis) and the second surface 502 facing downward (negative direction of the Z axis), the outer surface 531 is at a higher position than the bottom surface 511. In other words, there is a difference in height between the bottom surface 511 and the outer surface 531.

[0037] A low-gloss region 41 and a high-gloss region 42 are present on the first surface 501. In this embodiment, as shown in FIG. 2 , the low-gloss region 41 is present in the recess 51. More specifically, the low-gloss region 41 is present on the bottom surface 511 of the recess 51. On the other hand, the high-gloss region 42 is present in the protrusion 52. More specifically, the high-gloss region 42 is present on the outer surface 531 of the protrusion 52.

[0038] In this way, there is a difference in height between the two regions of different gloss (between the low gloss region 41 and the high gloss region 42). According to this embodiment, the two regions of different gloss (the low gloss region 41 and the high gloss region 42) are mixed together, and there is also a difference in height between these regions, which further widens the range of designs that can be expressed.

[0039] <Manufacturing methods for building materials> The building material 100 according to this embodiment can be manufactured basically in the same manner as in the first embodiment. By using a means for increasing the surface roughness Ra of the bottom surface 511 of the recessed portion 51 of the substrate 5, the low-gloss region 41 can be formed. The low-gloss region 41 can have an uneven surface 410. On the other hand, by using a means for decreasing the surface roughness Ra of the outer surface 531 of the protruding portion 52 of the substrate 5, the high-gloss region 42 can be formed. The high-gloss region 42 can have a non-uneven surface 420.

[0040] In this manner, the building material 100 shown in Fig. 2 is obtained. This building material 100 has two regions with different glossiness (a low gloss region 41 and a high gloss region 42), which allows for a wider range of possible designs. Furthermore, the difference in height between these regions allows for a further wider range of possible designs.

[0041] (3) Third embodiment Hereinafter, a decorative member 10 according to a third embodiment will be described with reference to Fig. 3 etc. In the third embodiment, components similar to those in the first and second embodiments will be assigned the same reference numerals as in the first and second embodiments, and detailed description thereof may be omitted.

[0042] <Decorative materials> 3 shows a decorative member 10 according to this embodiment. The decorative member 10 is used, for example, as an exterior material, similar to the building material 100. The decorative member 10 is a plate-shaped member. The decorative member 10 has a substantially rectangular shape when viewed in the XY plane.

[0043] The decorative member 10 according to this embodiment includes a building material 100 and a coating film structure 1.

[0044] The building material 100 includes a base material 5. In this embodiment, a first surface 501 and a second surface 502 of the base material 5 are flat surfaces. In other words, the base material 5 has a flat plate shape.

[0045] The coating film construction 1 is formed on a building material 100. Specifically, the coating film construction 1 is formed on a first surface 501 of a substrate 5. When the decorative member 10 is used as an exterior material, the decorative member 10 is attached to an appropriate location with the coating film construction 1 facing the exterior and the substrate 5 facing the interior. The appropriate location includes the wall and roof of a building.

[0046] In this embodiment, the coating film construction 1 has an undercoat coating film 21 and a topcoat coating film 22. The surface of the coating film construction 1 has a low gloss region 41 and a high gloss region 42.

[0047] The undercoat film 21 is formed on the first surface 501 of the substrate 5. The undercoat film 21 is a coating film that is colored in an appropriate color.

[0048] The topcoat coating film 22 is formed on the undercoat coating film 21. The topcoat coating film 22 is a transparent or semi-transparent coating film. Therefore, the undercoat coating film 21 can be seen through the topcoat coating film 22. Note that the topcoat coating film 22 is not limited to a transparent or semi-transparent coating film, and may also be an opaque coating film (for example, an enamel coating film).

[0049] The topcoat coating film 22 is composed of at least one layer. In this embodiment, the topcoat coating film 22 has an inorganic layer 202 and a photocatalytic layer 203.

[0050] The inorganic layer 202 is formed on the undercoat coating film 21. In this way, the inorganic layer 202 is interposed between the undercoat coating film 21 and the photocatalytic layer 203. As a result, the inorganic layer 202 suppresses contact between the undercoat coating film 21 and the photocatalytic layer 203, so that deterioration of the undercoat coating film 21 due to the photocatalytic layer 203 is less likely to progress.

[0051] The photocatalytic layer 203 is formed on the inorganic layer 202. In this embodiment, the surface of the photocatalytic layer 203 forms the surface of the topcoat coating film 22. The surface of the topcoat coating film 22 forms the surface of the coating film construction 1, i.e., the surface of the decorative member 10. In other words, the surface of the coating film construction 1 is the outermost surface of the decorative member 10. The outermost surface is the surface that is closest to the outdoors when the decorative member 10 is used as an exterior material.

[0052] The photocatalyst layer 203 is a layer containing a photocatalyst (for example, titanium oxide). The photocatalyst layer 203 is located on the outermost side of the coating film construction 1. Therefore, when the decorative member 10 is attached to an appropriate location as an exterior material, even if dirt adheres to the surface of the decorative member 10, the dirt can be decomposed by sunlight (particularly ultraviolet light), weakening the adhesion of the dirt. In rainy weather, the dirt can be washed away with rainwater. Furthermore, the photocatalyst layer 203 can also neutralize harmful substances in the air (for example, NOx).

[0053] As described above, the surface of the coating film construction 1 has a low-gloss region 41 and a high-gloss region 42. The low-gloss region 41 has an uneven surface 410. The uneven surface 410 is not particularly limited, but examples thereof include a surface having wrinkled unevenness in a crepe pattern. The high-gloss region 42 has a non-uneven surface 420.

[0054] <Manufacturing method for decorative components> The method for producing the decorative member 10 according to this embodiment includes a substrate preparation step, a primer coating film formation step, and a top coating film formation step. Each step will be described below.

[0055] The substrate preparation step is a step of preparing the substrate 5. If necessary, a sealer is applied to the first surface 501 of the substrate 5.

[0056] The undercoat film forming step is a step of forming the undercoat film 21. Specifically, an undercoat paint is applied onto the first surface 501 of the substrate 5 and dried or cured to form the undercoat film 21. Here, a known enamel paint can be used as the undercoat paint.

[0057] The topcoat film forming step is a step of forming the topcoat film 22. Specifically, the topcoat paint is applied onto the undercoat film 21 to form the topcoat film 22.

[0058] The topcoat paint is composed of an inorganic paint and a photocatalytic paint. First, the inorganic paint is applied onto the undercoat paint film 21 to form an inorganic layer 202. Then, the photocatalytic paint is applied onto the inorganic layer 202 to form a photocatalytic layer 203.

[0059] In this embodiment, the wrinkled unevenness that occurs during the drying process of the paint can be used to form the uneven surface 410 of the low-gloss region 41. For example, in the undercoat coating film forming process and / or topcoat coating film forming process, the uneven surface 410 can be formed by rapidly heating only the areas that will become the low-gloss region 41. Furthermore, the uneven surface 410 can be formed by performing shrink coating (crystal coating) only on the areas that will become the low-gloss region 41.

[0060] On the other hand, the areas to be the high-gloss regions 42 can be formed into a non-textured surface 420 by gently heating or by applying a normal coating. The high-gloss regions 42 can also be formed using ultraviolet-curable paint. The ultraviolet-curable paint can be easily cured at the desired timing. Therefore, by applying ultraviolet-curable paint to the areas to be the high-gloss regions 42 and curing the ultraviolet-curable paint before it wets and spreads, a thick coating film can be formed. The high-gloss regions 42 can be formed by this thick coating film.

[0061] Alternatively, the low-gloss region 41 and the high-gloss region 42 can be formed using a foaming paint (such as a urethane-based foaming paint). That is, first, the foaming paint is applied to the entire first surface 501 of the substrate 5. Next, a predetermined pressure is applied only to the areas that will become the high-gloss region 42, crushing the foamed portions. This forms the high-gloss region 42. Meanwhile, the foamed portions remain in the areas where the predetermined pressure is not applied. This forms the low-gloss region 41.

[0062] The decorative member 10 shown in Fig. 3 is obtained through the above-described substrate preparation process, undercoat film formation process, and topcoat film formation process. This decorative member 10 contains two regions with different glossiness (low gloss region 41 and high gloss region 42), which allows for a wider range of possible designs.

[0063] (4) Fourth embodiment The decorative member 10 according to the fourth embodiment will be described below with reference to Fig. 4 etc. In the fourth embodiment, the same components as those in the first to third embodiments are denoted by the same reference numerals as those in the first to third embodiments, and detailed description thereof may be omitted.

[0064] <Decorative materials> Fig. 4 shows a decorative member 10 according to this embodiment. In the fourth embodiment, the substrate 5 is different from the substrate 5 of the third embodiment (see Fig. 3). Specifically, in this embodiment, the substrate 5 has recessed portions 51 and protruding portions 52. At least one recessed portion 51 and at least one protruding portion 52 are present.

[0065] A low-gloss region 41 and a high-gloss region 42 are present on the first surface 501 of the substrate 5. In this embodiment, as shown in FIG. 4, the low-gloss region 41 is present in the recess 51. More specifically, the low-gloss region 41 is present on the bottom surface 511 of the recess 51. Meanwhile, the high-gloss region 42 is present in the protrusion 52. More specifically, the high-gloss region 42 is present on the outer surface 531 of the protrusion 52. In this way, there is a difference in height between the two regions with different gloss (between the low-gloss region 41 and the high-gloss region 42).

[0066] Therefore, according to this embodiment, two areas of different glossiness (low gloss area 41 and high gloss area 42) are mixed together, and there is also a difference in height between these areas, which further widens the range of designs that can be expressed.

[0067] <Manufacturing method for decorative components> The decorative member 10 according to this embodiment can be manufactured basically in the same manner as in the third embodiment. When forming the primer coating film 21 and / or the topcoat coating film 22 on the bottom surface 511 of the recessed portion 51 of the substrate 5, the bottom surface 511 can be rapidly heated to form the textured surface 410. Furthermore, the bottom surface 511 of the recessed portion 51 of the substrate 5 can be subjected to shrink coating (crystal coating) to form the textured surface 410. On the other hand, when forming the primer coating film 21 and / or the topcoat coating film 22 on the outer surface 531 of the protruding portion 52 of the substrate 5, the outer surface 531 can be gently heated or subjected to normal coating to form a non-textured surface 420.

[0068] In this manner, the decorative member 10 shown in Fig. 4 is obtained. The decorative member 10 has two regions with different glossiness (a low-gloss region 41 and a high-gloss region 42), which allows for a wider range of possible designs. Furthermore, the difference in height between these regions allows for a further wider range of possible designs.

[0069] (5) Fifth embodiment Hereinafter, a decorative member 10 according to the fifth embodiment will be described with reference to Fig. 5 etc. In the fifth embodiment, the same components as those in the first to fourth embodiments will be assigned the same reference numerals as those in the first to fourth embodiments, and detailed description thereof may be omitted.

[0070] <Decorative materials> A decorative member 10 according to this embodiment is shown in Fig. 5. The fifth embodiment differs from the fourth embodiment (see Fig. 4) in that the undercoat coating film 21 contains aggregates 3.

[0071] As described above, in this embodiment, the undercoat coating film 21 includes aggregates 3. The aggregates 3 are aggregates of particles of organic or inorganic materials. There are no particular limitations on the aggregates 3, but examples of the aggregates 3 include beads (colored beads), sand, silica sand (quartz sand, silica sand), colored sand, colored chips, mineral chips, glass chips, and wood chips.

[0072] Here, "the primer coating film 21 contains aggregates 3" means that at least a portion of the aggregates 3 is embedded in the primer coating film 21. More specifically, this means that at least a portion of the individual particles that make up the aggregates 3 are embedded in the primer coating film 21 (see FIG. 5). The individual particles that make up the aggregates 3 are uniformly or non-uniformly dispersed on the first surface 501 of the substrate 5 in an XY plan view.

[0073] When the primer coating film 21 contains aggregates 3, the average particle diameter of the aggregates 3 is larger than the film thickness of the primer coating film 21. In this specification, "average particle diameter" means the median diameter (50% diameter). The average particle diameter of the aggregates 3 can be obtained, for example, by measurement using a laser diffraction particle size distribution analyzer. As described above, if the average particle diameter of the aggregates 3 is larger than the film thickness of the primer coating film 21, many particles constituting the aggregates 3 will tend to protrude from various places on the surface of the primer coating film 21, as shown in Figure 5. The average particle diameter of the aggregates 3 is not particularly limited, but is, for example, in the range of 2 µm to 1000 µm.

[0074] In this embodiment, in the low-gloss region 41, the film thickness of the topcoat film 22 is less than the difference between the average particle diameter of the aggregates 3 and the film thickness of the primer film 21. As described above, the average particle diameter of the aggregates 3 is larger than the film thickness of the primer film 21, so many particles constituting the aggregates 3 tend to protrude from the surface of the primer film 21 in places. Furthermore, because the film thickness of the topcoat film 22 is less than the difference between the average particle diameter of the aggregates 3 and the film thickness of the primer film 21, the low-gloss region 41 has an uneven surface 410 caused by the aggregates 3, as shown in FIG. 5. That is, in the low-gloss region 41, the topcoat film 22 is formed in the form of a thin film on the surface of the aggregates 3 protruding from the surface of the primer film 21. In other words, the surface of the topcoat film 22 in the low-gloss region 41 is not flat in the strict sense, but rather has an uneven surface 410 caused by the aggregates 3. This makes it easier to achieve a surface roughness Ra of 1.5 μm or more in the low-gloss region 41.

[0075] On the other hand, in this embodiment, the film thickness of the topcoat coating film 22 in the high-gloss region 42 is equal to or greater than the difference between the average particle diameter of the aggregate 3 and the film thickness of the primer coating film 21. In this case, as shown in Figure 5, many of the particles that make up the aggregate 3 are completely embedded in the topcoat coating film 22. Therefore, the surface of the topcoat coating film 22 in the high-gloss region 42 can be made into a non-textured surface 420.

[0076] The topcoat film 22 is composed of at least one layer. In this embodiment, the topcoat film 22 has an inorganic layer 202 and a photocatalytic layer 203. The topcoat film 22 may further have a clear layer 201. In this embodiment, the topcoat film 22 in the low-gloss region 41 has an inorganic layer 202 and a photocatalytic layer 203. The topcoat film 22 in the high-gloss region 42 has an inorganic layer 202, a photocatalytic layer 203, and a clear layer 201. The clear layer 201 does not need to contain a pigment, but may contain a colorant (pigment and / or dye) as long as it does not become opaque. This allows the clear layer 201 to be formed according to the hue of the colorant. This further expands the range of possible designs. The topcoat film 22 may have an opaque layer (not shown) instead of the clear layer 201. The opaque layer can be formed using an opaque paint (such as an enamel paint). Comparing the case where the topcoat coating film 22 has a clear layer 201 with the case where the topcoat coating film 22 has an opaque layer, both can form a high-gloss area 42, but the former case is more likely to result in a higher gloss than the latter case.

[0077] In the low-gloss region 41, the inorganic layer 202 is formed on the undercoat coating film 21. In this way, the inorganic layer 202 is interposed between the undercoat coating film 21 and the photocatalytic layer 203. As a result, the inorganic layer 202 suppresses contact between the undercoat coating film 21 and the photocatalytic layer 203, so that deterioration of the undercoat coating film 21 due to the photocatalytic layer 203 is less likely to progress.

[0078] On the other hand, in the high-gloss region 42, the clear layer 201 is formed on the undercoat coating film 21. The inorganic layer 202 is formed on the clear layer 201. In this way, the inorganic layer 202 is interposed between the clear layer 201 and the photocatalytic layer 203. As a result, contact between the clear layer 201 and the photocatalytic layer 203 is suppressed by the inorganic layer 202, and deterioration of the clear layer 201 due to the photocatalytic layer 203 is less likely to progress.

[0079] In this embodiment, as shown in FIG. 5 , a low-gloss region 41 exists in a recess 51. More specifically, the low-gloss region 41 exists on the bottom surface 511 of the recess 51. Meanwhile, a high-gloss region 42 exists in a protrusion 52. More specifically, the high-gloss region 42 exists on the outer surface 531 of the protrusion 52. In this way, there is a difference in height between the two regions with different gloss (between the low-gloss region 41 and the high-gloss region 42). According to this embodiment, the mixture of two regions with different gloss (the low-gloss region 41 and the high-gloss region 42) and the difference in height between these regions further widens the range of designs that can be expressed.

[0080] <Manufacturing method for decorative components> The method for producing the decorative member 10 according to this embodiment includes a substrate preparation step, a primer coating film formation step, and a top coating film formation step. Each step will be described below.

[0081] The substrate preparation step is a step of preparing a substrate 5, as shown in Fig. 6. The substrate 5 has recesses 51 and protrusions 52 on a first surface 501. If necessary, a sealing agent is applied to the first surface 501 of the substrate 5.

[0082] As shown in FIG. 7 , in the primer coating film formation process, a primer paint is applied to the recesses 51 and protrusions 52 formed on the first surface 501 of the substrate 5, and then dried or cured to form the primer coating film 21. The primer paint contains aggregates 3. The film thickness of the primer coating film 21 is set to be smaller than the average particle diameter of the aggregates 3. By adjusting the film thickness of the primer coating film 21 in this way, many of the particles that make up the aggregates 3 can be made to protrude from various places on the surface of the primer coating film 21.

[0083] Here, a spray or the like may be used when applying the primer paint (paint containing aggregate 3) to the first surface 501 of the substrate 5. That is, the primer paint may be applied to both the recessed portions 51 and the protruding portions 52 of the first surface 501 of the substrate 5 using a spray. Furthermore, by using a spray, the primer paint can be applied separately on the first surface 501 of the substrate 5. That is, although not shown, the primer paint may be applied only to the recessed portions 51 or only to the protruding portions 52. Furthermore, the primer paint may be applied independently of the recessed portions 51 and the protruding portions 52. That is, the primer paint may be applied only to a portion of the recessed portions 51 or only to a portion of the protruding portions 52. Furthermore, as described in the third embodiment, by forming the high-gloss region 42 using an ultraviolet-curable paint, the difference in gloss between the low-gloss region 41 and the high-gloss region 42 can be increased, making it possible to form a sharp design.

[0084] The topcoat film forming step is a step of applying a topcoat paint onto the undercoat film 21 to form a topcoat film 22.

[0085] Here, the areas to be designated as low-gloss regions 41 are recesses 51. The top coat paint for forming the top coat film 22 in the recesses 51 is composed of an inorganic paint and a photocatalytic paint. On the other hand, the areas to be designated as high-gloss regions 42 are protrusions 52. The top coat paint for forming the top coat film 22 in the protrusions 52 is composed of a clear paint, an inorganic paint, and a photocatalytic paint. Paints known as clear paints, inorganic paints, and photocatalytic paints can be used. Clear paints include color clear paints. Color clear paints are clear paints that contain colorants (pigments and / or dyes, etc.). By using color clear paints, it is possible to form a clear layer 201 that corresponds to the color of the colorant while maintaining transparency.

[0086] First, as shown in FIG. 8 , a clear coating is applied to the primer coating film 21 of the convex portions 52 in the areas to be the high-gloss regions 42 to form a clear layer 201. The clear coating is preferably applied by roll coating from the viewpoint of ease of application. That is, since the outer surfaces 531 of the convex portions 52 are higher than the bottom surfaces 511 of the concave portions 51, roll coating makes it easy to apply the clear coating to the primer coating film 21 of the convex portions 52 while avoiding the primer coating film 21 of the concave portions 51. In this way, the aggregates 3 are embedded in the clear layer 201 in the convex portions 52, making the surface of the clear layer 201 flat. On the other hand, the clear layer 201 is not formed on the primer coating film 21 of the concave portions 51.

[0087] Next, an inorganic paint is applied onto the undercoat coating film 21 in the recessed portions 51 and onto the clear layer 201 in the protruding portions 52 to form an inorganic layer 202. After that, a photocatalytic paint is applied onto the inorganic layer 202 to form a photocatalytic layer 203. As shown in FIG. 5 , in the low-gloss region 41, the topcoat coating film 22 is formed of two layers, the inorganic layer 202 and the photocatalytic layer 203. On the other hand, in the high-gloss region 42, the topcoat coating film 22 is formed of three layers, the clear layer 201, the inorganic layer 202, and the photocatalytic layer 203.

[0088] Here, in the recesses 51 where the low-gloss regions 41 exist, the film thickness of the topcoat coating film 22 is set smaller than the difference between the average particle diameter of the aggregates 3 and the film thickness of the undercoat coating film 21. In this way, by adjusting the film thickness of the topcoat coating film 22, recesses can be formed between the particles that make up the aggregates 3. This allows the aggregates 3 to form an uneven surface 410 in the low-gloss regions 41.

[0089] On the other hand, in the convex portions 52 where the high-gloss regions 42 exist, the film thickness of the topcoat coating film 22 is set to be equal to or greater than the difference between the average particle diameter of the aggregate 3 and the film thickness of the undercoat coating film 21. By adjusting the film thickness of the topcoat coating film 22 in this way, many of the particles that make up the aggregate 3 can be completely embedded in the topcoat coating film 22, and the surface of the topcoat coating film 22 can be made into a non-convex surface 420 (for example, a flat surface).

[0090] Through the above-described substrate preparation step, undercoat film formation step, and topcoat film formation step, the building material 100 shown in FIG. 5 is obtained.

[0091] (6) Sixth embodiment Hereinafter, a decorative member 10 according to the sixth embodiment will be described with reference to Fig. 9 etc. In the sixth embodiment, the same components as those in the first to fifth embodiments will be assigned the same reference numerals as those in the first to fifth embodiments, and detailed description thereof may be omitted.

[0092] <Decorative materials> Fig. 9 shows the decorative member 10 according to this embodiment. In the sixth embodiment, the substrate 5 is different from the substrate 5 of the fifth embodiment (see Fig. 5). Specifically, in this embodiment, the first surface 501 and the second surface 502 of the substrate 5 are flat surfaces. In other words, the substrate 5 has a flat plate shape.

[0093] In this embodiment, the coating film construction 1 has an undercoat coating film 21 and a topcoat coating film 22. The surface of the coating film construction 1 has a low gloss region 41 and a high gloss region 42.

[0094] <Manufacturing method for decorative components> The method for producing the decorative member 10 according to this embodiment includes a substrate preparation step, a primer coating film formation step, and a top coating film formation step. Each step will be described below.

[0095] The substrate preparation step is a step of preparing the substrate 5. If necessary, a sealer is applied to the first surface 501 of the substrate 5.

[0096] The primer coating film forming process is a process of forming the primer coating film 21. Specifically, a primer paint is applied to the first surface 501 of the substrate 5 and dried or cured to form the primer coating film 21. The primer paint contains aggregates 3. The film thickness of the primer coating film 21 is set to be smaller than the average particle diameter of the aggregates 3. By adjusting the film thickness of the primer coating film 21 in this way, many of the particles that make up the aggregates 3 can be made to protrude from various places on the surface of the primer coating film 21.

[0097] The topcoat film forming step is a step of forming the topcoat film 22. Specifically, a topcoat paint is applied onto the undercoat film 21 to form the topcoat film 22. However, the method of forming the topcoat film 22 differs between the areas to be the low-gloss regions 41 and the areas to be the high-gloss regions 42.

[0098] In the area to be the low gloss area 41, the top coat paint is composed of an inorganic paint and a photocatalytic paint. On the other hand, in the area to be the high gloss area 42, the top coat paint is composed of a clear paint, an inorganic paint, and a photocatalytic paint. Paints known as clear paint, inorganic paint, and photocatalytic paint can be used.

[0099] First, a clear paint or enamel paint is applied to the primer coating film 21 in the area that will become the high-gloss area 42, to form a clear layer 201. At this time, aggregates 3 are embedded in the clear layer 201, making the surface of the clear layer 201 a flat surface. Note that the clear layer 201 is not formed on the primer coating film 21 in the area that will become the low-gloss area 41.

[0100] Next, inorganic paint is applied onto the undercoat film 21 in the areas to be the low-gloss regions 41 and onto the clear layer 201 in the areas to be the high-gloss regions 42, to form inorganic layer 202. Thereafter, photocatalytic paint is applied onto inorganic layer 202 to form photocatalytic layer 203.

[0101] In this way, in the low-gloss region 41, the topcoat coating film 22 is formed of two layers, the inorganic layer 202 and the photocatalytic layer 203. On the other hand, in the high-gloss region 42, the topcoat coating film 22 is formed of three layers, the clear layer 201, the inorganic layer 202, and the photocatalytic layer 203.

[0102] Here, in the low gloss region 41, the film thickness of the top coat film 22 is set to be smaller than the difference between the average particle diameter of the aggregate 3 and the film thickness of the primer coat film 21. In this way, by adjusting the film thickness of the top coat film 22, it is possible to form depressions between the particles that make up the aggregate 3. After forming the top coat film 22, measurement may be performed using a known gloss meter to confirm that the 60-degree gloss value of the low gloss region 41 is less than 8.

[0103] On the other hand, in the high-gloss region 42, the film thickness of the topcoat coating film 22 is set to be equal to or greater than the difference between the average particle diameter of the aggregate 3 and the film thickness of the primer coating film 21. By adjusting the film thickness of the topcoat coating film 22 in this way, many of the particles that make up the aggregate 3 can be embedded in the topcoat coating film 22, making it possible to make the surface of the topcoat coating film 22 a flat surface.

[0104] The decorative member 10 shown in Fig. 9 is obtained through the above-described substrate preparation process, undercoat film formation process, and topcoat film formation process. This decorative member 10 contains two regions with different glossiness (a low-gloss region 41 and a high-gloss region 42), which allows for a wider range of possible designs.

[0105] (7) Seventh embodiment The building material 100 according to the seventh embodiment will be described below with reference to Fig. 10 etc. In the seventh embodiment, the same components as those in the first to sixth embodiments will be given the same reference numerals as those in the first to sixth embodiments, and detailed description thereof may be omitted.

[0106] <Building materials> 10 and 11 show a building material 100 according to this embodiment. In the seventh embodiment, the base material 5 is different from the base material 5 (see FIG. 2) of the second embodiment.

[0107] Specifically, in this embodiment, as shown in FIG. 11 , there are a plurality of convex portions 52, and the height H1 of at least one of the plurality of convex portions 52 (first convex portion 541) is different from the height H2 of the remaining convex portions 52 (second convex portion 542). That is, in this embodiment, there is a height difference (H1-H2) between the outer surfaces 531 of the plurality of convex portions 52 (in this embodiment, the first convex portion 541 and the second convex portion 542). In this way, the height difference between the plurality of convex portions 52 can further widen the range of designs that can be expressed. Note that the height of the convex portion 52 means the length in the Z-axis direction from the bottom surface 511 of the recess 51 to the outer surface 531 of the convex portion 52.

[0108] In this embodiment, as shown in FIGS. 10 and 11 , a plurality of protrusions 6 extending in one direction (the X-axis direction in this embodiment) are present on the surface (outer surface 531) of at least one or more convex portions 52. The cross-sectional shape of the protrusions 6 is not particularly limited, but examples thereof include a semicircular shape, an elliptical shape, a triangular shape, a trapezoidal shape, and a rectangular shape. In this embodiment, as shown in FIG. 11 , a plurality of protrusions 6 are present on the surface of the second convex portion 542, and a plurality of protrusions 6 are not present on the surface of the first convex portion 541. This allows the gloss of the second convex portion 542 to be higher than the gloss of the concave portion 51, but lower than the gloss of the first convex portion 541. That is, the building material 100 according to this embodiment may have at least three or more regions with different glosses (in this embodiment, a first low-gloss region 411, a second low-gloss region 412, and a high-gloss region 42) (see FIG. 11 ). This further widens the range of possible designs.

[0109] Here, the surface (outer surface 531) of at least one or more convex portions 52 may be inclined in any direction and at any angle relative to the XY plane. For example, even if multiple protrusions 6 are present on the surfaces of two convex portions 52 in the same manner, the gloss may be increased or decreased depending on the inclination direction and angle of these convex portions 52. This further widens the range of possible designs.

[0110] Furthermore, when multiple protrusions 6 are present on each surface of the multiple convex portions 52, at least one of the thickness, spacing, and depth of these protrusions 6 may be the same or different. In this embodiment, as shown in FIG. 10, there are two or more types of protrusions 6 (first protrusions 61, second protrusions 62, and third protrusions 63). For example, the thicknesses of the first protrusions 61, second protrusions 62, and third protrusions 63 increase in this order. This can result in differences in gloss among the multiple convex portions 52. This can further expand the range of designs that can be expressed.

[0111] The thickness of the protrusion 6 means the width of one protrusion 6 in a direction perpendicular to one direction (the Y-axis direction in this embodiment) in an XY plane view. In this embodiment, the thickness of the first protrusion 61 is 1.0 mm or more and 1.5 mm or less, the thickness of the second protrusion 62 is 1.5 mm or more and 2.0 mm or less, and the thickness of the third protrusion 63 is 2.5 mm or more and 3.5 mm or less, but is not limited to these thicknesses.

[0112] The interval between the protrusions 6 means the pitch between two adjacent protrusions 6 in a direction perpendicular to one direction (the Y-axis direction in this embodiment) in the XY plane view.

[0113] The depth of the protrusion 6 refers to the protrusion length of the protrusion 6 in the Z-axis direction. In this embodiment, the depth of the first protrusion 61 is 0.7 mm, the depth of the second protrusion 62 is 0.9 mm, and the depth of the third protrusion 63 is 1.0 mm, but is not limited to these depths.

[0114] In this embodiment, the dimensional ratios of the first protrusion 61, the second protrusion 62, and the third protrusion 63 are such that, if the thickness and depth of the first protrusion 61 are all 1.0, the thickness and depth of the second protrusion 62 are all 1.2 or more, and the thickness and depth of the third protrusion 63 are all 1.4 or more, but are not limited to these dimensional ratios.

[0115] (8) Eighth embodiment Hereinafter, the decorative member 10 according to the eighth embodiment will be described with reference to Fig. 12 etc. In the eighth embodiment, the same components as those in the first to seventh embodiments will be assigned the same reference numerals as those in the first to seventh embodiments, and detailed description thereof may be omitted.

[0116] <Decorative materials> A decorative member 10 according to this embodiment is shown in Fig. 12. The eighth embodiment differs from the fifth embodiment (see Fig. 5) in that the coating film construction 1 further has a printed layer 7.

[0117] In this embodiment, the printed layer 7 is located directly below the inorganic layer 202 (in the negative direction of the Z axis). The printed layer 7 can be formed by, for example, inkjet printing. Therefore, the printed layer 7 includes an ink-receiving layer. The ink-receiving layer is a layer that absorbs ink and fixes coloring materials such as dyes and pigments, and is not particularly limited.

[0118] In the XY plane view, there is no particular limitation on the pattern of the printing layer 7. Depending on the pattern of the printing layer 7, the range of possible designs can be further expanded.

[0119] In particular, in this embodiment, as shown in FIG. 12 , the pattern of the printing layer 7 (first printing layer 71) in the low-gloss region 41 is different from the pattern of the printing layer 7 (second printing layer 72) in the high-gloss region 42. For example, of two types of natural objects (rocks, minerals, etc.) with different glossiness, a pattern of a low-gloss natural object is printed in the low-gloss region 41 to form the first printing layer 71, and a pattern of a high-gloss natural object is printed in the high-gloss region 42 to form the second printing layer 72. Specifically, in this embodiment, the pattern of the first printing layer 71 is a clay pattern, and the pattern of the second printing layer 72 is a marble pattern. In this way, by changing the pattern of the printing layer 7 in the two regions (the low-gloss region 41 and the high-gloss region 42), the range of possible designs can be further expanded.

[0120] (9) Variations The present invention is not limited to the first to eighth embodiments. The first to eighth embodiments can be modified in various ways depending on the design and the like, as long as the object of the present invention can be achieved. Modifications of the first to eighth embodiments are listed below.

[0121] In the third to fifth embodiments, the top coat film 22 is made up of a plurality of layers, but it may also be made up of a single layer.

[0122] In the third to fifth embodiments, the top coat film 22 contains a photocatalyst, but the top coat film 22 does not have to contain a photocatalyst.

[0123] In the fifth embodiment, the undercoat coating film 21 contains aggregate 3, but the topcoat coating film 22 may also contain aggregate.

[0124] In the second, fourth, and fifth embodiments, the low-gloss regions 41 are present in the recessed portions 51 and the high-gloss regions 42 are present in the protruding portions 52, but this may be reversed. That is, the low-gloss regions 41 may be present in the protruding portions 52 and the high-gloss regions 42 may be present in the recessed portions 51.

[0125] In the sixth and seventh embodiments, the undercoat coating film 21 contains aggregate 3, but the topcoat coating film 22 may also contain aggregate.

[0126] In the sixth and seventh embodiments, the topcoat coating film 22 is made up of a plurality of layers, but it may also be made up of a single layer.

[0127] In the third to sixth and eighth embodiments, the top coat film 22 contains a photocatalyst, but the top coat film 22 does not have to contain a photocatalyst.

[0128] In the fourth, fifth and eighth embodiments, the low-gloss regions 41 are present in the recessed portions 51 and the high-gloss regions 42 are present in the protruding portions 52, but this may be reversed. That is, the low-gloss regions 41 may be present in the protruding portions 52 and the high-gloss regions 42 may be present in the recessed portions 51.

[0129] In the seventh embodiment, the building material 100 includes a substrate 5, but may also include a coating film structure 1 to form a decorative member 10. In this case, the low-gloss region 41 may be formed by, for example, gravure offset printing or flexographic printing.

[0130] In the seventh embodiment, the height of the convex portion 52 is two-stage, that is, the height H1 of the first convex portion 541 and the height H2 of the second convex portion 542, but may be three or more stages.

[0131] In the seventh embodiment, the plurality of protrusions 6 extend in the X-axis direction, but may also extend in the Y-axis direction, or may extend in a direction inclined relative to the X-axis and Y-axis.

[0132] In the first to eighth embodiments, a decorative sheet may be attached to the outermost surface (the surface facing the positive direction of the Z axis) of the building material 100 or decorative member 10. The decorative sheet may be attached only to the high-gloss region .

[0133] (10) Mode As is clear from the above-described embodiment and modifications, the present invention includes the following aspects. In the following, reference numerals are given in parentheses only to clarify the correspondence with the embodiment.

[0134] The first aspect is a building material (100) comprising a substrate (5). On the substrate (5), there are present a low-gloss region (41) having a 60-degree gloss value of less than 8 and a high-gloss region (42) having a 60-degree gloss value of 8 or more. The difference in 60-degree gloss value between the low-gloss region (41) and the high-gloss region (42) is 5 or more.

[0135] According to this embodiment, the mixture of two areas with different glossiness can widen the range of designs that can be expressed.

[0136] The second aspect is a building material (100) based on the first aspect. In the second aspect, the 60-degree gloss value of the high-gloss region (42) is in the range of 70 or more and 150 or less.

[0137] According to this aspect, the range of possible designs can be further expanded.

[0138] A third aspect is a building material (100) based on the first or second aspect. In the third aspect, the surface roughness Ra of the low-gloss region (41) is 1.5 μm or more.

[0139] According to this aspect, the range of possible designs can be further expanded.

[0140] A fourth aspect is a building material (100) based on any one of the first to third aspects. In the fourth aspect, the surface roughness Ra of the high-gloss region (42) is smaller than the surface roughness Ra of the low-gloss region (41).

[0141] According to this aspect, the range of possible designs can be further expanded.

[0142] A fifth aspect is a building material (100) based on any one of the first to fourth aspects. In the fifth aspect, the base material (5) has recesses (51) and protrusions (52).

[0143] According to this aspect, the range of possible designs can be further expanded.

[0144] A sixth aspect is a building material (100) based on the fifth aspect. In the sixth aspect, there are a plurality of the convex portions (52). Of the plurality of convex portions (52), the height of at least one convex portion (52) is different from the height of the remaining convex portions (52).

[0145] According to this aspect, the range of possible designs can be further expanded.

[0146] The seventh aspect is a building material (100) based on the fifth or sixth aspect. In the seventh aspect, a plurality of protrusions (6) extending in one direction are present on the surface of the convex portion (52).

[0147] According to this aspect, the range of possible designs can be further expanded.

[0148] The eighth aspect is a decorative member (10) comprising a building material (100) based on any one of the first to seventh aspects and a coating film structure (1) formed on the building material (100). The low-gloss region (41) and the high-gloss region (42) are present on the coating film structure (1).

[0149] According to this aspect, the range of possible designs can be further expanded.

[0150] A ninth aspect is a decorative member (10) based on the eighth aspect. In the ninth aspect, the coating film structure (1) has an undercoat coating film (21) formed on the substrate (5) of the building material (100) and a topcoat coating film (22) formed on the undercoat coating film (21). One of the undercoat coating film (21) or the topcoat coating film (22) contains aggregates (3). The average particle diameter of the aggregates (3) is larger than the film thickness of the one of the coating films. The low-gloss region (41) has an uneven surface (410) due to the aggregates (3).

[0151] According to this aspect, the range of possible designs can be further expanded.

[0152] A tenth aspect is a decorative member (10) based on the ninth aspect. In the tenth aspect, the coating film construction (1) further comprises a printed layer (7).

[0153] According to this aspect, the range of possible designs can be further expanded.

[0154] An eleventh aspect is the decorative member (10) based on the tenth aspect. In the eleventh aspect, the pattern of the printed layer (7) in the low gloss region (41) is different from the pattern of the printed layer (7) in the high gloss region (42).

[0155] According to this aspect, the range of possible designs can be further expanded.

[0156] A twelfth aspect is a decorative member (10) based on any one of the ninth to eleventh aspects. In the twelfth aspect, at least one of the undercoat coating film (21) and the topcoat coating film (22) has a clear layer (201).

[0157] According to this aspect, the range of possible designs can be further expanded.

[0158] A thirteenth aspect is the decorative member (10) based on the twelfth aspect. In the thirteenth aspect, the clear layer (201) includes a color clear paint.

[0159] According to this aspect, the range of possible designs can be further expanded.

[0160] A fourteenth aspect is a decorative member (10) based on any one of the ninth to thirteenth aspects. In the fourteenth aspect, the undercoat coating film (21) contains the aggregates (3). In the low-gloss region (41), the film thickness of the topcoat coating film (22) is less than the difference between the average particle diameter of the aggregates (3) and the film thickness of the undercoat coating film (21). In the high-gloss region (42), the film thickness of the topcoat coating film (22) is equal to or greater than the difference between the average particle diameter of the aggregates (3) and the film thickness of the undercoat coating film (21).

[0161] According to this aspect, the range of possible designs can be further expanded.

[0162] The fifteenth aspect is a method for manufacturing a decorative member (10), which includes the steps of preparing a substrate (5), applying a primer coating containing aggregates (3) to the substrate (5) to form a primer coating film (21) having a thickness smaller than the average particle diameter of the aggregates (3), and applying a topcoat coating on the primer coating film (21) to form a topcoat coating film (22) having a thickness smaller than the difference between the average particle diameter of the aggregates (3) and the thickness of the primer coating film (21) in areas to be low-gloss regions (41), and forming a topcoat coating film (22) having a thickness equal to or greater than the difference between the average particle diameter of the aggregates (3) and the thickness of the primer coating film (21) in areas to be high-gloss regions (42).

[0163] According to this embodiment, the mixture of two areas with different glossiness can widen the range of designs that can be expressed.

Claims

1. A substrate having a recess and a protrusion, A low gloss region having a 60-degree gloss value of less than 8 and a high gloss region having a 60-degree gloss value of 8 or more are present on the substrate, The difference in 60-degree gloss value between the low gloss area and the high gloss area is 5 or more, A plurality of protrusions extending in one direction are present on the surface of the convex portion. Building materials.

2. The 60-degree gloss value of the high-gloss area is in the range of 70 to 150. The building material according to claim 1.

3. The surface roughness Ra of the low gloss area is 1.5 μm or more.

3. The building material according to claim 1 or 2.

4. The surface roughness Ra of the high gloss region is smaller than the surface roughness Ra of the low gloss region. The building material according to any one of claims 1 to 3.

5. There are a plurality of the convex portions, At least one of the plurality of convex portions has a height different from that of the remaining convex portions. The building material according to any one of claims 1 to 4.

6. A building material according to any one of claims 1 to 5, and a coating film structure formed on the building material, The low gloss region and the high gloss region are present on the coating film construction. Cosmetic materials.

7. The coating film structure has an undercoat coating film formed on the substrate of the building material and a topcoat coating film formed on the undercoat coating film, one of the undercoat coating film and the topcoat coating film contains aggregate; the average particle size of the aggregate is larger than the thickness of the one coating film, The low-gloss area has an uneven surface due to the aggregate. The decorative member according to claim 6.

8. The coating film construction further has a printing layer. The decorative member according to claim 7.

9. The pattern of the printing layer in the low gloss area is different from the pattern of the printing layer in the high gloss area. The decorative member according to claim 8.

10. At least one of the undercoat coating film and the topcoat coating film has a clear layer. The decorative member according to any one of claims 7 to 9.

11. The clear layer comprises a color clear paint. The decorative member according to claim 10.

12. The primer coating film contains the aggregate, In the low gloss region, the thickness of the topcoat coating film is less than the difference between the average particle diameter of the aggregate and the thickness of the undercoat coating film; In the high-gloss region, the film thickness of the topcoat coating film is equal to or greater than the difference between the average particle diameter of the aggregate and the film thickness of the undercoat coating film. The decorative member according to any one of claims 7 to 11.

13. A step of providing a substrate; applying an undercoat paint containing aggregate to the substrate to form an undercoat film having a thickness smaller than the average particle size of the aggregate; and applying a topcoat paint onto the undercoat film to form a topcoat film having a thickness smaller than the difference between the average particle diameter of the aggregate and the film thickness of the undercoat film in areas to be low gloss regions, and to form a topcoat film having a thickness equal to or greater than the difference between the average particle diameter of the aggregate and the film thickness of the undercoat film in areas to be high gloss regions. A method for manufacturing decorative components.

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