Wall materials and wall construction structures

Abstract

To provide a wall material suitable for realizing a high water resistance in a wall material construction structure, and the wall material construction structure.SOLUTION: The wall material X has a front side connection part 10 and a rear side connection part 20. A first resin film 31 is provided on at least one of an end surface 11a of the front side connection part 10 and an end surface 21 of the rear side connection part 20, and a second resin film 32 is provided on at least one of an extension surface 11b and an extension surface 22b. The end surface 11a, 21 and the first resin film 31 are arranged so that at least first resin film 31 fills between the end surfaces 11a and 21 while the end surfaces 11a and 21 face each other at a coupling site when the front side connection part 10 of one wall material X and the rear side connection part 20 of other wall material X are connected in a first direction D1, and the extension surfaces 11b, 22b and the second resin film 32 are arranged so that at least the second resin film 32 fills between the extension surfaces 11b and 22b while the extension surfaces 11b and 22b face each other. The wall material construction structure Y uses such wall material X.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a wall material and a wall material construction structure.

[0002] The outer wall of a building may be constituted by joining a plurality of wall materials vertically, horizontally, and diagonally. As a wall material for the outer wall, a ceramic wall material formed in a plate shape mainly from cement and fibrous materials is known. Ceramic wall materials can be manufactured with a wide variety of patterns and colors, and are frequently used as wall materials for the outer wall.

[0003] Wall materials such as ceramic wall materials that make up the outer wall are exposed to ultraviolet rays, carbon dioxide, water due to rainfall, etc. in the outdoor environment. Regarding the influence of water on wall materials such as ceramic wall materials, research has been progressing in recent years. For example, water can cause fading and peeling of the coating film on the surface of the wall material, and can also cause cracks and neutralization in the internal structure that makes up the wall material. In addition, depending on the temperature difference between cold and warm in the environment, the action of repeated freezing and thawing of water, that is, the freeze-thaw action, can promote local damage of the wall material and peeling of the above-mentioned coating film, etc., and can deteriorate the wall material.

[0004] Therefore, in wall materials for the outer wall such as ceramic wall materials, measures regarding water resistance may be taken. Regarding conventional techniques for the water resistance of wall materials for the outer wall, for example, they are described in Patent Documents 1 and 2 below.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0006] In recent years, there has been an increasing demand for long-term durability of houses, and wall materials with better water resistance and wall material construction structures using the same have been desired. The present invention has been conceived under such circumstances, and its object is to provide a wall material suitable for realizing high water resistance in a wall material construction structure, and a wall material construction structure using the same.

MEANS FOR SOLVING THE PROBLEMS

[0007] The front-side joint portion has a first end surface facing one side in the first direction and a first extended surface located on the other side of the first end surface in the first direction and facing the back surface side. The back-side joint portion has a second end surface facing the other side in the first direction and a second extended surface located on the other side of the second end surface in the first direction and facing the side. The first resin film is located on at least one of the first end surface and the second end surface. The second resin film is located on at least one of the first extended surface and the second extended surface.

[0008] In addition, at the joint portion where the front-side joint portion of one wall material and the back-side joint portion of another wall material are joined together in the first direction, the first end surface, the second end surface, and the first resin film are arranged such that at least the first resin film fills the space between the first end surface and the second end surface and the first end surface and the second end surface face each other. Front

[0009] ​​​​​​​​​ At the same time, a gap between the first extension surface and the second extension surface is formed at the joint portion. The first extension surface and the second extension surface are opposed to each other while being filled with at least the second resin film. The output surface, the second extended surface, and the second resin film are disposed.

[0010] In this wall material, as described above, the first resin is applied to at least one of the first end surface and the second end surface. a second resin film is positioned on at least one of the first extending surface and the second extending surface; Two such wall materials are placed together at their front and back joints. In the state where the pieces are joined in the first direction, as described above, the first The first end face and the second end face are arranged such that at least the space between the first end face and the second end face is filled with a first resin film. and the space between the first extending surface and the second extending surface is filled with at least a second resin film. In this arrangement, the first extending surface and the second extending surface face each other. It is suitable for preventing and suppressing the infiltration of rainwater and other water onto the reverse side (indoor side) (i.e., ensuring watertightness). Therefore, it is suitable for realizing high water resistance in wall construction.

[0011] As described above, the wall material according to the first aspect of the present invention has high water resistance in a wall material construction. Suitable for realization.

[0012] Preferably, at least one of the first resin film and the second resin film is made of a thermoplastic resin, a thermosetting resin, or the like. The resin contains at least one selected from the group consisting of a photosensitive resin and an ultraviolet curable resin. Such a configuration is suitable for ensuring the waterproofing function of the resin film.

[0013] In a preferred embodiment, at least one of the first resin film and the second resin film is a resin sheet. It is. Since the resin sheet is easy to manufacture with high precision in terms of its thickness dimension, and thus is easy to be prepared as a sheet with a uniform thickness, such a configuration is suitable for providing a resin film with good thickness accuracy in this main wall material. In a preferred embodiment, the front-side joint portion has a chamfered portion between the first end face and the first extending face, and the resin film in the front-side joint portion is formed in a region covering the first end face, the chamfered portion, and the first extending face. Such a configuration is suitable for forming a resin film that is continuous with a sufficient thickness over the region where the resin film is to be formed in the front-side joint portion. Preferably, the resin film includes a first layer as a lower layer and a second layer on the first layer. More preferably, the first layer contains bubbles, and the second layer either does not contain bubbles or contains fewer bubbles than the first layer.

[0014] In a preferred aspect, the front-side joint portion has a chamfered portion between the first end face and the first extending face, and the resin film at the front-side joint portion is formed in a region extending over the first end face, the chamfered portion, and the first extending face. Such a configuration is suitable for forming a resin film that is continuous with a sufficient thickness over the region where the resin film is to be formed at the front-side joint portion. Preferably, the resin film includes a first layer as a lower layer and a second layer on the first layer. More preferably, the first layer contains bubbles, and the second layer either does not contain bubbles or contains fewer bubbles than the first layer. Such a configuration is suitable for forming a resin film that is continuous with a sufficient thickness over the region where the resin film is to be formed at the front-side joint portion. In a preferred embodiment, the front-side joint portion has a chamfered portion between the first end face and the first extending face, and the resin film in the front-side joint portion is formed in a region covering the first end face, the chamfered portion, and the first extending face. Such a configuration is suitable for forming a resin film that is continuous with a sufficient thickness over the region where the resin film is to be formed in the front-side joint portion.

[0015] Preferably, the resin film includes a first layer as a lower layer and a second layer on the first layer. More preferably, the first layer contains bubbles, and the second layer either does not contain bubbles or contains fewer bubbles than the first layer. More preferably, the first layer contains bubbles, and the second layer either does not contain bubbles or contains fewer bubbles than the first layer. This kind of structure is suitable for forming the first layer by applying and drying a resin composition with relatively low viscosity, and then forming the second layer by applying and drying a resin composition with relatively high viscosity on the first layer when forming the resin film. When applying and drying a resin composition with relatively low viscosity, although the composition is likely to partially penetrate the surface of the wall material and thus bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein.

[0016] This kind of structure is suitable for forming the first layer by applying and drying a resin composition with relatively low viscosity, and then forming the second layer by applying and drying a resin composition with relatively high viscosity on the first layer when forming the resin film. When applying and drying a resin composition with relatively low viscosity, although the composition is likely to partially penetrate the surface of the wall material and thus bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. This kind of structure is suitable for forming the first layer by applying and drying a resin composition with relatively low viscosity, and then forming the second layer by applying and drying a resin composition with relatively high viscosity on the first layer when forming the resin film. When applying and drying a resin composition with relatively low viscosity, although the composition is likely to partially penetrate the surface of the wall material and thus bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. This kind of structure is suitable for forming the first layer by applying and drying a resin composition with relatively low viscosity, and then forming the second layer by applying and drying a resin composition with relatively high viscosity on the first layer when forming the resin film. When applying and drying a resin composition with relatively low viscosity, although the composition is likely to partially penetrate the surface of the wall material and thus bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. When applying and drying a resin composition with relatively low viscosity, since the composition is likely to partially penetrate the surface of the wall material, bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, but it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. When applying and drying a resin composition with relatively low viscosity, since the composition is likely to partially penetrate the surface of the wall material, bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, but it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. When applying and drying a resin composition with relatively low viscosity, since the composition is likely to partially penetrate the surface of the wall material, bubbles are likely to enter the composition due to the fine uneven shape of the wall material surface, but it is easy to form the first layer that shows good adhesion to the wall material surface. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. When applying and drying a resin composition with relatively high viscosity on such a first layer, it is easy to form the second layer that shows good adhesion to the first layer while preventing or suppressing the incorporation of bubbles into the composition. Also, the resin film has fewer bubbles incorporated therein. It tends to have higher water resistance. Therefore, the above-described configuration in which the resin film has a multilayer structure is suitable for forming a resin film with excellent water resistance in a predetermined region with good adhesion.

[0017] In a preferred embodiment, the first layer and the second layer are thermosetting resin coatings. Since thermosetting resin coatings tend to be excellent in water resistance and weather resistance and have good adhesion to the wall material, the configuration in which the resin film has a multilayer structure with a thermosetting resin coating is suitable for forming a resin film that is excellent not only in water resistance but also in weather resistance with good adhesion. In a preferred embodiment, the first layer is a thermoplastic resin coating and the second layer is a thermoplastic resin sheet. Such a configuration can be realized, for example, by forming the first layer, which is a thermoplastic resin coating, by applying and drying a thermoplastic resin composition, and then forming the second layer on the first layer with a thermoplastic resin sheet. When the thermoplastic resin composition is applied and dried, since the composition easily penetrates partially into the surface of the wall material, it is easy to form the first layer that exhibits good adhesion to the surface of the wall material. When the composition is applied and dried with a relatively low-viscosity resin composition, although air bubbles easily enter the composition due to the fine uneven shape of the wall material surface, it is preferable because it is easy to form the first layer that exhibits good adhesion to the surface of the wall material. By laminating the thermoplastic resin sheet to such a first layer, it is easy to form the second layer that exhibits good adhesion to the first layer. In addition, since the thermoplastic resin

[0018] sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet. Such a configuration can be realized, for example, by forming the first layer, which is a thermoplastic resin coating, by applying and drying a thermoplastic resin composition, and then forming the second layer on the first layer with a thermoplastic resin sheet. When the thermoplastic resin composition is applied and dried, since the composition easily penetrates partially into the surface of the wall material, it is easy to form the first layer that exhibits good adhesion to the surface of the wall material. When the composition is applied and dried with a relatively low-viscosity resin composition, although air bubbles easily enter the composition due to the fine uneven shape of the wall material surface, it is preferable because it is easy to form the first layer that exhibits good adhesion to the surface of the wall material. By laminating the thermoplastic resin sheet to such a first layer, it is easy to form the second layer that exhibits good adhesion to the first layer. In addition, since the thermoplastic resin sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy. sheet is easy to manufacture with high precision in terms of its thickness dimension and can be easily prepared as a sheet with a uniform thickness, the above configuration is suitable for forming a resin film with excellent water resistance and adhesion with good thickness accuracy.

[0019] In a preferred embodiment, the main wall material further includes a first caulking portion. The first caulking portion is located on at least one of the second resin film on the first extending surface and the second resin film on the second extending surface and is positioned thereon.

[0020] In a preferred embodiment, the main wall material further includes a second caulking portion. The second caulking portion is located on the first extending surface on the other side in the first direction than the second resin film on the first extending surface and is thicker than the second resin film.

[0021] In a preferred embodiment, the main wall material further includes a third caulking portion. The third caulking portion is located on the second extending surface on the other side in the first direction than the second resin film on the second extending surface and is thicker than the second resin film.

[0022] Each of the above-described components in which the caulking portion is used is suitable for filling the space between the first extending surface and the second extending surface with the second resin film and the caulking portion when two main wall materials are joined together in the first direction through their front-side joint portions and back-side joint portions (that is, it is suitable for enjoying the water-stopping function by the cooperation of the second resin film and the caulking portion). Therefore, such a configuration is useful for achieving high water resistance in the wall material construction structure. Preferably, the front-side joint portion has a groove portion located on the other side in the first direction than the first extending surface, and a first engaged portion located on the back side of the groove portion and adjacent to the first extending surface through the groove portion. At the same time, the back-side joint portion has a second engaged portion located on the back side of the second end surface and extending on the other side in the first direction than the second end surface. At the same time, one of the wall materials has a second engaged portion located on the back side of the second end surface and extending on the other side in the first direction than the second end surface. At the same time, one of the wall materials

[0023] Preferably, the front-side joint portion has a groove portion located on the other side in the first direction than the first extending surface and a first engaged portion located on the back side of the groove portion and adjacent to the first extending surface through the groove portion. At the same time, the back-side joint portion has a second engaged portion located on the back side of the second end surface and extending on the other side in the first direction than the second end surface. At the same time, one of the wall materials has a second engaged portion located on the back side of the second end surface and extending on the other side in the first direction than the second end surface. At the same time, one of the wall materials has a second engaged portion located on the back side of the second end surface and extending on the other side in the first direction than the second end surface. At the same time, one of the wall materials At the joint where the front joint of the wall material and the back joint of another wall material are joined in the first direction The main wall is configured such that the first locked portion and the second locked portion are spaced apart and opposed in the first direction material is configured.

[0024] In a state where two such main wall materials having such a configuration are joined by butting as described above At the joint, an internal space including at least the groove between the first extending surface and the first locked portion at the front joint is formed in the middle of the wall material thickness direction. Along with this, at the joint portion, as described above, the first locked portion and the second locked portion are spaced apart and opposed in the first direction. That is, at the joint, a gap connecting to the internal space is formed between the first locked portion and the second locked portion. Such a configuration is suitable for ensuring the air permeability of the internal space and suppressing the occurrence of condensation in the space. When condensation occurs in the internal space, the condensed water is also suitable for discharging the condensed water from the inside of the wall material through the gap. Therefore, it helps to achieve high water resistance in the wall material construction structure. water is discharged from the inside of the wall material through the gap. Therefore, it helps to achieve high water resistance in the wall material construction structure. water is discharged from the inside of the wall material through the gap. Therefore, it helps to achieve high water resistance in the wall material construction structure. water is discharged from the inside of the wall material through the gap. Therefore, it helps to achieve high water resistance in the wall material construction structure.

[0025] In the main wall material, preferably, a resin film is not formed on the first locked portion and the second locked portion is not formed.

[0026] In a state where two such main wall materials having such a configuration are joined by butting as described above The inner surface of the groove portion, which is at least a part of the internal space formed, is not covered with a resin film. According to such a configuration, when condensation occurs in the internal space, it is easy to obtain the effect of absorbing at least a part of the condensed water on the surface of the wall material such as the first extending surface at the front joint is not covered with a resin film. According to such a configuration, when condensation occurs in the internal space, it is easy to obtain the effect of absorbing at least a part of the condensed water on the surface of the wall material such as the first extending surface at the front joint of the wall material. Such absorption is caused by the freezing and thawing action of water such as condensed water in the internal space, for example, locally of the wall material. Such absorption is caused by the freezing and thawing action of water such as condensed water in the internal space, for example, locally is suitable for suppressing the occurrence of breakage, and thus realizes high water resistance in the wall material construction structure and is helpful for achieving it.

[0027] According to a second aspect of the present invention, a wall material construction structure is provided. This wall material construction structure includes a support member, a first wall material, a second wall material, and a fixture for attaching the first and second wall materials to the support member.

[0028] The first wall material and the second wall material are attached to the support member adjacent to each other in a first direction. Each of the first wall material and the second wall material is the above-mentioned wall material according to the first aspect of the present invention. The front joint portion of the first wall material and the back joint portion of the second wall material are joined together in the first direction. At the joint portion, the first end face of the front joint portion and the second end face of the back joint portion face each other with at least the first resin film filling the space therebetween, and the first extended face of the front joint portion and the second extended face of the back joint portion face each other with at least the second resin film filling the space therebetween. The wall material is configured in this way. Further, the fixture has a fixing portion fixed to the support member and a locking structure portion that locks the first wall material and the second wall material.

[0029] In this wall material construction structure, as described above, at the joint portion between the first wall material and the second wall material, the first end face and the second end face face each other with the first resin film filling the space therebetween, and the first extended face and the second extended face face each other with the second resin film filling the space therebetween. Such a configuration is suitable for preventing and suppressing the intrusion of water such as rainwater into the back side (indoor side) at the joint portion of the first and second wall materials. Therefore, it is suitable for realizing high water resistance in the wall material construction structure. ​​​​​​​​​​​

[0030] As described above, the wall material construction structure according to the second aspect of the present invention is suitable for achieving high water resistance. Suitable.

Brief Description of the Drawings

[0031]

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Modes for Carrying Out the Invention

[0032] FIG. 1 is a cross-sectional view of a wall material X according to the first embodiment of the present invention. The wall material X is a building board for constructing the outer wall of a building. When constructing the outer wall, a plurality of wall materials X are joined together in the vertical (longitudinal direction) and horizontal (lateral direction), and are attached to a predetermined support provided in the building body via a fixture. Wall is a building board for constructing the outer wall of a building. When constructing the outer wall, a plurality of wall materials X are joined together in the vertical (longitudinal direction) and horizontal (lateral direction), and are attached to a predetermined support provided in the building body via a fixture. Direction (longitudinal direction) and left and right direction (lateral direction), and are attached to a predetermined support provided in the building body via a fixture. To be attached via a fixture.

[0033] The wall material X has a front surface F1 and a back surface F2 opposite to the front surface F1. The design surface has, for example, a rectangular shape (not shown) when viewed from the front. 1, a pair of edges extending in a first direction D1 and a pair of edges extending in a second direction intersecting the first direction D1. The outer shape is defined by a pair of edges extending from the surface. The dimension in the direction D1 is, for example, 400 to 1000 mm, and the dimension in the second direction is, for example, 900 to The first direction D1 and the second direction are preferably perpendicular to each other. The thickness, ie, the dimension between the front surface F1 and the back surface F2, is, for example, 12 to 25 mm.

[0034] The wall material X has a front joint 10 located on one side in the first direction D1 (the lower side in FIG. 1). and a rear-side joint portion 20 located on the other side in the first direction D1 (the upper side in FIG. 1). The front-side joint 10 extends along the second direction on one side of the first direction D1. The rear joint portion 20 extends along the second direction on the other side of the first direction D1. It is being done.

[0035] The front joint 10 is an end portion having a shape suitable for joining the wall materials X together. Specifically, the front side joint portion 10 is an end portion having a solid structure. 1, a locked portion 12 (first locked portion), and a groove portion 13. The locking portions 12 are adjacent to each other in the thickness direction of the wall material X with the grooves 13 interposed therebetween. is located closer to the front surface F1 than the locked portion 12 and the groove portion 13. It is located closer to the back surface F2 than the extension 11 and the groove 13.

[0036] The front side extension part 11 extends to one side of the first direction D1 from the locked part 12. The front side extension part 11 has an end face 11a (first end face) and an extension face 11b (first extension face). The end face 11 a is located at the extension end of the front side extension part 11 in the first direction D1 and faces one side in the first direction D1. The extension face 11b is located between the end face 11a and the groove part 13 in the first direction D1 (that is, located on the other side of the end face 11a in the first direction D1) and faces the back face F2 side .

[0037] The locked part 12 is a part to be locked by a fixture for attaching the wall material to the support material, and has an end face 12a and an inclined face 12b. The end face 12a faces one side in the first direction D1 and is retracted to the other side in the first direction D1 from the end face 11a of the front side extension part 11 and is located at a position. The inclined face 12b is inclined with respect to the first direction D1 such that the farther away from the end face 12a, the closer to the front face F1. Such an inclined face 12b forms a part of the inner surface of the groove part 13 .

[0038] The back side joint part 20 is an end part having a shape suitable for joining wall materials X, and in this embodiment, it is an end part having a lower structure. Specifically, the back side joint part 20 has an end face 21 (second end face) and a back side extension part 22.

[0039] The end face 21 is located on the front face F1 side of the back side extension part 22 and faces the other side in the first direction D1 .

[0040] The back side extension part 22 is located on the back face F2 side of the end face 21 and extends to the other side in the first direction D1 more than the end face 21. The back side extension part 22 has a locked part 22 having an end face 22a It includes A and has an extended surface 22b (the second extended surface). The locked portion 22A is a portion for being locked by a fixture for attaching a wall material to a support member, and is located at the tip of the backside extended portion 22 in the first direction D1. The end face 22a of the locked portion 22A is located at the other end of the backside extended portion 22 in the first direction D1 and faces the other side in the first direction D1. Also, the extended surface 2 2b is located between the locked portion 22A and the end face 21 in the first direction D1 (i.e., is located on the other side of the end face 21 in the first direction D1) and faces the front face F1 side. The wall material X having the above-described shape is a ceramic wall material (ceramic siding board). Also, the wall material X is preferably a ceramic wall material coated with a coating film. Such a

[0041] configuration is suitable for obtaining good waterproofness in the wall material X exposed to the outdoor environment, and thus helps to achieve high water resistance in the wall material construction structure including the wall material X.

[0042] The ceramic wall material is, for example, an inorganic plate formed in a plate shape mainly from cement and fibrous materials. Examples of the ceramic wall material include wood fiber-reinforced cement boards, fiber-reinforced cement boards, and fiber-reinforced cement-calcium silicate boards.

[0043] The above coating film is formed, for example, by applying and drying a paint containing a resin component. As the resin component of the paint, for example, acrylic resin, acrylic silicone resin, silicone resin, fluororesin, polyurethane resin, and epoxy resin can be mentioned. The resin component is selected according to the function of the coating film. The paint for forming the coating film or the coating film formed thereby contains a pigment. ​​​​It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. The coating film may have a laminated structure of multiple layers. For example, the coating film formed on the front surface F1 has a laminated structure including a sealer layer, an undercoat film, a middle coat film, and a clear coat film in this order from the substrate side. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm.

[0044] The coating film may have a laminated structure of multiple layers. For example, the coating film formed on the front surface F1 has a laminated structure including a sealer layer, an undercoat film, a middle coat film, and a clear coat film in this order from the substrate side. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm.

[0045] The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component. It may be contained. Examples of the pigment include calcium carbonate, clay, titanium oxide, carbon black, red lead, yellow lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, and chromium oxide. For the application of the paint, for example, flow coating and roll coater can be used. The paint may be formed into a film by spray coating. Also, depending on the type of the coating film or the resin content, the coating film is dried at room temperature or in a dryer at 50°C to 120°C. The thickness of the coating film is, for example, 50 to 100 μm. The sealer layer is formed by applying and drying a paint containing at least one of acrylic resin and acrylic urethane resin as a main component. The sealer layer may contain a pigment. Each of the undercoat film and the middle coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, alkyd resin, urethane resin, silicone resin, and epoxy resin as a main component. The middle coat film may contain a pigment. The clear coat film is formed by applying and drying a paint containing at least one selected from the group consisting of acrylic resin, acrylic urethane resin, acrylic silicone resin, fluororesin, urethane resin, and silicone resin as a main component.

[0046] The wall material X includes a first resin film 31 and a second resin film 32. In the present invention, the first resin film 31 is located on at least one of the end face 11a (the first end face) at the front joint portion 10 and the end face 21 (the second end face) at the back joint portion 20. The second resin film 32 is located on at least one of the extended face 11b (the first extended face) at the front joint portion 10 and the extended face 22b (the second extended face) at the back joint portion 20.

[0047] In this embodiment, the wall material X has the first resin film 31 located on the end face 11a and the second coating film 32 located on the extended face 11b, and these continuously form the resin film 30. The wall material X of this embodiment has the first resin film 31 located on the end face 21 and the second coating film 32 located on the extended face 22b, and these continuously form the resin film 30.

[0048] That is, in the wall material X of this embodiment, a resin film 30 (the first resin film 31, the second resin film 32) is provided in a region (the first region) spanning the end face 11a and the extended face 11b at the front joint portion 10 of the front side extension portion 11, and a resin film 30 (the first resin film 31, the second resin film 32) is also provided in a region (the second region) spanning the end face 21 and the extended face 22b of the back side extension portion 22 at the back joint portion 20. The resin film 30 is an element intervening in a predetermined region between the front joint portion 10 and the back joint portion 20 when two wall materials X are joined together in the first direction D1 by butting via their front joint portions 10 and

[0049] Such a resin film 30, that is, the first resin film 31 and the second resin film 32 can be formed, for example, by coating and drying a composition containing a resin component as a main ingredient. Examples of the resin component include thermoplastic resins, thermosetting resins, and ultraviolet curable resins. Examples of the thermoplastic resin include polyethylene resin, polypropylene resin, methacrylic resin, and thermoplastic polyurethane resin. Examples of the thermosetting resin include epoxy resin, melamine resin, and thermosetting polyurethane resin. Examples of the ultraviolet curable resin include a resin composition containing a base polymer, a polymerizable compound such as an epoxy monomer, and a photoinitiator. Also, the thickness of the resin film 30 is, for example, 50 to 80 0μm μm.

[0050] Alternatively, at least one of the first resin film 31 and the second resin film 32 may be a resin sheet. As the resin sheet, preferably, a thermoplastic resin sheet is used. Examples of the main component of the thermoplastic resin sheet include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyethylene terephthalate, polyvinyl alcohol, polyvinylidene chloride, methacrylic resin, and acrylonitrile styrene resin. The thickness of the resin sheet is, for example, 50 to 400 μm. The resin sheet is easy to manufacture with high precision in terms of its thickness dimension, and thus is easy to prepare as a sheet having a uniform thickness. Therefore, the above-described configuration is suitable for providing the resin film 30 with good thickness accuracy in the wall material X. The wall material X is designed such that two wall materials X can be joined to each other in the first direction D1 via their front joint portion 10 and back joint portion 20. Specifically, the front joint portion 10 of one wall material X and the back joint portion 20 of the other wall material X are joined together in the first direction D1.

[0051]

[0051]

[0051] In the case of such a joint portion, the wall material X is designed or configured so that the following facing relationships are realized. Or configured.

[0052] In the above joint portion, the space between the end face 11a at the front joint portion 10 of one wall material X and the end face 21 at the back joint portion 20 of the other wall material X is filled with at least the first resin film 31, and the end face 11a and the end face 21 face each other. In the above joint portion, the space between the extending face 11b at the front joint portion 10 of one wall material X and the extending face 22b at the back joint portion 20 of the other wall material X is filled with at least the second resin film 32, and the extending face 11b and the extending face 22b face each other. Also, in the above joint portion, the engaged portion 12 at the front joint portion 10 of one wall material X and the engaged portion 22A at the back joint portion 20 of the other wall material X are spaced apart and face each other in the first direction D1. These facing relationships will be described later with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. In an arrangement where it is filled with at least the first resin film 31, and the end face 11a and the end face 21 face each other. In the above joint portion, the space between the extending face 11b at the front joint portion 10 of one wall material X and the extending face 22b at the back joint portion 20 of the other wall material X is filled with at least the second resin film 32, and the extending face 11b and the extending face 22b face each other. Also, in the above joint portion, the engaged portion 12 at the front joint portion 10 of one wall material X and the engaged portion 22A at the back joint portion 20 of the other wall material X are spaced apart and face each other in the first direction D1. These facing relationships will be described later with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. and the extending face 11b and the extending face 22b face each other. Also, in the above joint portion, the engaged portion 12 at the front joint portion 10 of one wall material X and the engaged portion 22A at the back joint portion 20 of the other wall material X are spaced apart and face each other in the first direction D1. These facing relationships will be described later with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. At least filled with the second resin film 32, and the extending face 11b and the extending face 22b face each other. Also, in the above joint portion, the engaged portion 12 at the front joint portion 10 of one wall material X and the engaged portion 22A at the back joint portion 20 of the other wall material X are spaced apart and face each other in the first direction D1. These facing relationships will be described later with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. and the engaged portion 22A at the back joint portion 20 of the other wall material X are spaced apart and face each other in the first direction D1. These facing relationships will be described later with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. These facing relationships will be described later as described below with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments. as described below with reference to FIGS. 2 and 3 regarding the wall material construction structure according to other embodiments.

[0053] FIGS. 2 and 3 show the wall material construction structure Y according to the second embodiment of the present invention. FIG. 2 shows a partial longitudinal section of the wall material construction structure Y, and FIG. 3 shows a partial longitudinal section at other locations in the wall material construction structure Y. FIGS. 2 and 3 are illustrated such that the above-described first direction D1 is oriented in the vertical direction. FIG. 2 shows a partial longitudinal section of the wall material construction structure Y, and FIG. 3 shows a partial longitudinal section at other locations in the wall material construction structure Y. FIGS. 2 and 3 are illustrated such that the above-described first direction D1 is oriented in the vertical direction. section. FIGS. 2 and 3 are illustrated such that the above-described first direction D1 is oriented in the vertical direction. are illustrated.

[0054] The wall material construction structure Y includes a support member 40, a fixture 50, and a plurality of the above-described wall materials X.

[0055] The support member 40 is a support member provided in the building body, for example, a body edge. In the present embodiment, as the support member 40, a vertical body edge extending in the vertical direction is exemplarily shown. In the wall material construction structure Y, a plurality of support members 40 are arranged at predetermined intervals in the horizontal direction. In the present embodiment, a vertical body edge extending in the vertical direction is exemplarily shown. In the wall material construction structure Y, a plurality of support members 40 are arranged at predetermined intervals in the horizontal direction. of support members 40 are arranged at predetermined intervals in the horizontal direction.

[0056] The fixture 50 is a component for attaching the wall material X to the support material 40. As shown in FIG. 2 has a fixing portion 51 fixed to the support material 40 and a locking structure portion 52. The locking structure portion 52 includes locking portions 52a and 52b. The locking portion 52a extends from the fixing portion 51 to the front side of the wall material X has a bent shape capable of locking the locked portion 12 of the joint portion 10, and in the wall material construction structure Y, the wall partially enters the groove portion 13 of the front joint portion 10 of the wall material X1. The locking portion 52b extends from the fixing portion 51 and has a bent shape capable of locking the locked portion 22A of the back joint portion 20 of the wall material X, and in the wall material construction structure Y, it partially enters between the locked portion 22A of the back joint portion 20 of the wall material X2 and the front extension portion 11 of the front joint portion 10 of the wall material X1. As the constituent material of such a fixture 5 0, for example, stainless steel can be mentioned. Also, a specific example of the fixture 50 is shown in FIG. 4.

[0057] In the plurality of wall materials X included in the wall material construction structure Y, the wall materials X1 and X2 adjacent to each other in the vertical direction are, as shown in FIGS. 2 and 3, joined to each other in the first direction D1 (the vertical direction in this embodiment) via the front joint portion 10 of the wall material X1 and the back joint portion 20 of the wall material X2, and are attached to the support material 40 via the fixture 50. In the state where they are attached.

[0058] At the joint portion of the wall materials X1 and X2, the end face 11a of the front joint portion 10 of the wall material X1 and the wall are filled with the first resin film 31 between the end face 21 of the back joint portion 20 of the material X2, and the end face 11a and the end face 21 are opposed to each other. At the joint portion, the extension surface 11b of the front joint portion 1 0 of the wall material X1 and the extension surface 22b of the back joint portion 20 of the wall material X2 are separated by the second In a state filled with the resin film 32, the extending surface 11b and the extending surface 22b face each other. Wall material application The resin film 30 between the front joint portion 10 and the back joint portion 20 in the wall material construction structure Y is, in this embodiment as described above with reference to FIG. 1 regarding the wall material X, the resin film 30 (the first resin film 31, the second resin film 32) on the front joint portion 10 and the resin film 30 (the first resin film 31, the second resin film 32) on the back joint portion 20 are combined and integrated.

[0059] Also, at the joint portion in the wall material construction structure Y, the engaged portion 12 at the front joint portion 10 of the wall material X1 and the engaged portion 22A at the back joint portion 20 of the wall material X2 face each other with a gap in the first direction D1.

[0060] In the wall material construction structure Y with the above configuration, at the joint portion of the wall materials X1 and X2, as described above the end faces 11a and 21 face each other with the space between them filled with the first resin film 31, and the extending surfaces 11b and 22b face each other with the space between them filled with the second resin film 32. Such a configuration is suitable for preventing and suppressing the intrusion of water such as rainwater to the back side (indoor side) at the joint portion of the wall materials X1 and X2. Therefore, it is suitable for realizing high water resistance in the wall material construction structure Y.

[0061] Also, in the wall material construction structure Y, at the joint portion of the wall materials X1 and X2, an internal space S including the groove portion 13 between the front extending portion 11 and the engaged portion 12 at the front joint portion 10 of the wall material X1 is formed in the middle of the wall material thickness direction. At the same time, at the joint portion, as described above, the engaged portion 12 of the front joint portion 10 and the engaged portion 22A of the back joint portion 20 are separated in the first direction D1. They face each other with a gap therebetween. That is, at the joint portion, for example, as shown in FIG. 3, a gap G communicating with the internal space S is formed between the locked portions 12, 22A. Such a configuration is suitable for ensuring the air permeability of the internal space S and suppressing the occurrence of condensation in the space S, and is also suitable for discharging the condensed water in the internal space S from the inside of the wall material through the gap G when condensation occurs in the internal space S. Therefore, it helps to achieve high water resistance in the wall material construction structure Y. In addition, in the wall material construction structure Y, the inner surface of the groove portion 13 which is a part of the internal space S is not covered with the resin film 30. According to such a configuration, when condensation occurs in the internal space S, even if it is only partially, the condensed water can be easily absorbed by the surface of the wall material such as the extending surface 11b of the surface side extending portion 11. Such absorption is suitable for suppressing, for example, local damage to the wall material X due to the freezing and thawing action of water such as condensed water in the internal space S. Therefore, it helps to achieve high water resistance in the wall material construction structure Y. In the wall material X in such a wall material construction structure Y, instead of the configuration in which the resin film 30 is formed in both the above-mentioned first region and the second region, as shown in FIG. 5, the resin film 30 is formed in the first region (the region extending over the end face 11a and the extending surface 11b of the surface side extending portion 11 of the surface side joint portion 10) and is not formed in the second region. In this case, the thickness of the resin film 30 on the first region is, for example, 50 to 40 μm.

[0062] μm. μm. μm. μm. μm. μm.

[0063] μm. 0μm μm.

[0064] Alternatively, instead of the configuration where the resin film 30 is formed on both the above-described first and second regions, as shown in FIG. 6, a configuration may be adopted in which the resin film 30 is formed in the second region (the region extending over the end face 21 and the extending face 22b in the back-side joint portion 20) and is not formed in the first region. In the wall material X shown in FIG. 6, specifically, the first resin film 31 is formed on the end face 21 and is not formed on the end face 11a, and the second resin film 32 is formed on the extending face 22b and is not formed on the extending face 11b. In this case, the thickness of the resin film 30 on the second region is, for example, 50 to 40 0μm is.

[0065] Also, according to the modified examples shown in FIGS. 5 and 6, even when the two wall materials X are joined together in the first direction D1 through their front-side joint portion 10 and back-side joint portion 20, it is possible for the resin film 30 to be appropriately interposed between the front-side joint portion 10 and the back-side joint portion 20. In the above-described wall material X, the front-side extending portion 11 of the front-side joint portion 10 may have a chamfered shape portion 11c, for example, as shown in FIG. 7, between the end face 11a and the extending face 11 b. The chamfered shape portion

[0066] 11c may be, for example, an inclined plane inclined with respect to the end face 11a and the extending face 11 b, or a curved surface bulging outward between the end face 11a and the extending face 11b, or a structure composed of a plurality of planes sequentially changing the inclination direction between the end face 11a and the extending face 11b. FIG. 7 exemplarily shows the case where the chamfered shape portion 11c is the above-described inclined plane. The configuration in which the front-side extending portion 11 has the chamfered shape portion 11c is suitable for forming the resin film 30 continuously with a sufficient thickness on the heat plastic resin film formation planned region in the front-side joint portion 10. In FIG. 7, the case where the chamfered shape portion 11c is the above inclined plane is exemplarily shown. The configuration in which the front-side extending portion 11 has the chamfered shape portion 11c is suitable for forming the resin film 30 continuously with a sufficient thickness on the heat plastic resin film formation planned region in the front-side joint portion 10. suitable.

[0067] The resin film 30 in the wall material X is made up of a first layer on the resin film formation area and a second layer on the first layer. The resin film formation region in the front-side bonding portion 10 may have a multilayer structure including a second layer. The region where the resin film is to be formed in the backside bonding portion 20 is the first region. In this case, preferably, the first layer contains bubbles and the second layer does not contain bubbles or Alternatively, there are fewer air bubbles in the second layer than in the first layer.

[0068] Such a resin film 30 is formed by applying and drying a resin composition having a relatively low viscosity to form a first layer. After forming the first layer, a relatively high viscosity resin composition is applied and dried on the first layer to form the second layer. The coating and drying of a resin composition with a relatively low viscosity makes it possible to form two layers. Since the composition easily penetrates into the surface of the wall material, the fine unevenness of the surface of the wall material can cause the same composition to be mixed. Although the composition is prone to air bubbles, it is easy to form a first layer that has good adhesion to the wall surface. The coating and drying of a resin composition with a relatively high viscosity on such a first layer results in and exhibiting good adhesion to the first layer while preventing or suppressing the inclusion of air bubbles in the composition. The fewer air bubbles there are in the resin film, the more water-resistant it is. Therefore, the resin film 30 having a multi-layer structure has a high water resistance. This is suitable for forming the resin film 30, which has excellent adhesion, in a predetermined area.

[0069] The first and second layers preferably contain the same resin as the base resin. Such a configuration is suitable for obtaining high adhesion between the first layer and the second layer.

[0070] In a preferred embodiment, the first and second layers are thermosetting resin coatings. The chemical conversion resin film is excellent in water resistance and weather resistance and has good adhesion to the wall material, so the resin film having a multilayer structure with a thermosetting resin film is suitable for forming a resin film that is excellent in weather resistance in addition to water resistance with good adhesion.

[0071] In a preferred embodiment, the above-mentioned first layer is a thermoplastic resin film, and the second layer is a thermoplastic resin sheet. Such a configuration can be realized, for example, by forming the first layer, which is a thermoplastic resin film, by applying and drying a thermoplastic resin composition, and then forming the second layer on the first layer with a thermoplastic resin sheet. According to the application and drying of the thermoplastic resin composition, since the composition easily penetrates partially into the surface of the wall material, it is easy to form the first layer that exhibits good adhesion to the surface of the wall material. According to the application and drying of a relatively low-viscosity resin composition, although air bubbles easily enter the composition due to the fine uneven shape of the wall material surface because the composition easily penetrates partially into the surface of the wall material, it is easy to form the first layer that exhibits good adhesion to the surface of the wall material, so it is preferable. According to the lamination of the thermoplastic resin sheet to such a first layer, it is easy to form the second layer that exhibits good adhesion to the first layer. In addition, since the thermoplastic resin sheet is easy to manufacture with high precision regarding its thickness dimension and is easy to prepare as a sheet having a uniform thickness, the above configuration is suitable for forming a resin film excellent in water resistance and adhesion with good thickness accuracy.

[0072] The wall material X may further have a caulking portion. Specifically, the wall material X may have a caulking portion located on at least one of the second resin films 32 on the extending surface 11b at the front-side joint portion 10 and the second resin films 32 on the extending surface 22b at the back-side joint portion 20. ​​​​​​​​​

[0073] The caulking part is provided so as to extend along the extending direction (the second direction described above) on the extending surface 11b or the extending surface 22b, and has, for example, a semicircular cross-sectional shape. Further, the caulking part is a resin element that can be press-deformed. Examples of the material of the caulking part include styrene-based block copolymer resins and olefin-based resins. Examples of the styrene-based block copolymer resin include styrene-butylene-ethylene-styrene copolymer resin, styrene-isobutylene-styrene copolymer resin, and styrene-butadiene-styrene copolymer resin. Examples of the olefin-based resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin. The case where the wall material X shown in FIG. 1 has the caulking part 70 (first caulking part 71) on both the second resin film 32 on the extending surface 11b and the second resin film 32 on the extending surface 22b is shown in FIG. 8. The case where the wall material X shown in FIG. 5 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 11b is shown in FIG. 9. The case where the wall material X shown in FIG. 6 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 22b is shown in FIG. 10. As shown in FIG. 11, the wall material X has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 11a and the extending surface 11b at the front-side joint part 10, and has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 21 and the extending surface 22b at the back-side joint part 20. The styrene-based block copolymer resin includes, for example, styrene-butylene-ethylene-styrene copolymer resin, styrene-isobutylene-styrene copolymer resin, and styrene-butadiene-styrene copolymer resin. Examples of the styrene-butylene-ethylene-styrene copolymer resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin. Examples of the styrene-isobutylene-styrene copolymer resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin. Examples of the styrene-butadiene-styrene copolymer resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin. Examples of the olefin-based resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin. Examples of the olefin-based resin include those containing polypropylene resin as a matrix resin and ethylene-propylene rubber resin finely dispersed in the matrix resin.

[0074] The case where the wall material X shown in FIG. 1 has the caulking part 70 (first caulking part 71) on both the second resin film 32 on the extending surface 11b and the second resin film 32 on the extending surface 22b is shown in FIG. 8. The case where the wall material X shown in FIG. 5 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 11b is shown in FIG. 9. The case where the wall material X shown in FIG. 6 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 22b is shown in FIG. 10. The case where the wall material X shown in FIG. 6 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 22b is shown in FIG. 10. The case where the wall material X shown in FIG. 6 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 22b is shown in FIG. 10. The case where the wall material X shown in FIG. 6 has the caulking part 70 (first caulking part 71) on the second resin film 32 on the extending surface 22b is shown in FIG. 10.

[0075] As shown in FIG. 11, the wall material X has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 11a and the extending surface 11b at the front-side joint part 10, and has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 21 and the extending surface 22b at the back-side joint part 20. As shown in FIG. 11, the wall material X has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 11a and the extending surface 11b at the front-side joint part 10, and has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 21 and the extending surface 22b at the back-side joint part 20. As shown in FIG. 11, the wall material X has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 11a and the extending surface 11b at the front-side joint part 10, and has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 21 and the extending surface 22b at the back-side joint part 20. ) and may have a caulking portion 70 (second caulking portion 72) on the extended surface 11b . The second caulking portion 72 is located on the extended surface 11b on the other side of the second resin film 32 on the extended surface 11b in the first direction D1 and is thicker than the second resin film 32.

[0076] The second resin film 32 on the extended surface 22b in the wall material X shown in FIG. 11 is shorter in dimension in the first direction D1 than the second resin film 32 on the extended surface 22b in the wall material X shown in FIG. 1 (in the first direction D1 the position of the other side edge end is closer to one side). When joined in the first direction D1 by agreement, such a configuration is adopted so that the caulking portion 72 on the extended surface 11b can abut on the surface of the extended surface 22b of another wall material X.

[0077] As shown in FIG. 12, the wall material X has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 11a and the extended surface 11b at the front side joint portion 10, and at the back side joint portion 20 it has a resin film 30 (first resin film 31, second resin film 32) extending over the end face 21 and the extended surface 22b, and may have a caulking portion 70 (third caulking portion 73) on the extended surface 11b. ) . The third caulking portion 73 is located on the extended surface 22b on the other side of the second resin film 32 on the extended surface 22b in the first direction D1 and is thicker than the second resin film 32.

[0078] The second resin film 32 on the extended surface 11b in the wall material X shown in FIG. 12 is shorter in dimension in the first direction D1 than the second resin film 32 on the extended surface 11b in the wall material X shown in FIG. 1 (in the first direction D1 the position of the other side edge end is closer to one side). When joined in the first direction D1 by agreement, the caulking portion 73 on the extended surface 22b It is configured in such a way that it can contact the 2b surface.

[0079] In each of the above configurations where the caulking portion 70 is used, when the two wall materials X2 are joined together in the first direction D1 by butting via their front joint portion 1 0 and the back joint portion 20, at the joint portion, the caulking portion 70 is pressed and deformed between the extending surface 11b and the extending surface 22b, and it is suitable for filling the space between the extending surface 11b and the extending surface 22b with the second resin film 32 and the caulking portion 70 (that is, it is suitable for enjoying the water-stopping function by the cooperation of the second resin film 32 and the caulking portion 70). Therefore, the above configuration using the caulking portion 70 helps to achieve high water resistance in the wall material construction structure Y.

Explanation of Reference Numerals

[0080] X Wall material F1 Front surface F2 Back surface D1 First direction D2 Second direction 10 Front joint portion 11 Front extending portion 11a End face (first end face) 11b Extending surface (first extending surface) 11c Chamfered shape portion 12 Locked portion (first locked portion) 12a End face 12b Inclined surface 13 Groove portion 20 Back joint portion 21 End face (second end face) 22 Back extending portion 22A Locked portion (second locked portion) 22a End face 22b Extending surface (second extending surface) 31 Resin film (first resin film) 32 Resin film (second resin film) Y Wall material construction structure 40 Support material​​​ 50 Mounting tool 51 Fixing part 52 Locking structure part

Claims

1. A wall material having a front surface and a back surface opposite to the front surface, and including a front joint portion located on one side in a first direction and a back joint portion located on the other side in the first direction, wherein the front joint portion includes a front extension portion located on the front surface side of the wall material, a first end surface formed at one end of the front extension portion in the one side of the first direction and extending from the front surface side to the back surface side, a first extension surface formed on the front extension portion facing the back surface side and extending to the other side in the first direction, and a first engaged portion formed at a position on the back surface side of the wall material, retreating from the first end surface to the other side in the first direction; the back joint portion includes a second end surface formed at an end of the wall material on the other side in the first direction and extending from the front surface side to the back surface side, a back extension portion located on the back surface side of the wall material and extending from the second end surface to the other side in the first direction, a second extension surface formed on the back extension portion facing the front surface side and extending to the other side in the first direction, and a second engaged portion formed at an end of the back extension portion on the other side in the first direction; at least one first resin film is disposed on at least one of the first end surface and the second end surface, at least one second resin film is disposed on at least one of the first extension surface and the second extension surface, and the first resin film and the second resin film are not disposed on the front surface, the first engaged portion, and the second engaged portion. Wall material.

2. The wall material according to claim 1, wherein at least one of the first resin film and the second resin film contains at least one selected from the group consisting of a thermoplastic resin and a thermosetting resin.

3. The wall material according to claim 1 or 2, wherein at least one of the first resin film and the second resin film is a resin sheet.

4. The wall material according to any one of claims 1 to 3, wherein the front joint portion has a chamfered shape portion between the first end surface and the first extension surface, and the first resin film and the second resin film in the front joint portion are formed in a region covering the first end surface, the chamfered shape portion, and the first extension surface.

5. The wall material according to any one of claims 1 to 4, wherein the first resin film and the second resin film include a first layer as a lower layer and a second layer on the first layer.

6. The first layer contains bubbles, The second layer does not contain bubbles, or the number of bubbles in the second layer is less than that in the first layer, the wall material according to claim 5.

7. The first layer and the second layer are thermosetting resin coatings, the wall material according to claim 5 or 6.

8. The first layer is a thermoplastic resin coating, and the second layer is a thermoplastic resin sheet, the wall material according to claim 5 or 6.

9. The wall material according to any one of claims 1 to 8, further comprising a first caulking portion on at least one of the second resin film on the first extending surface and the second resin film on the second extending surface.

10. The wall material according to any one of claims 1 to 8, further comprising a second caulking portion located on the other side in the first direction than the second resin film on the first extending surface and thicker than the second resin film on the first extending surface on the first extending surface.

11. The wall material according to any one of claims 1 to 8, further comprising a third caulking portion located on the other side in the first direction than the second resin film on the second extending surface and thicker than the second resin film on the second extending surface on the second extending surface.

12. The front side joint portion has a groove portion located on the other side in the first direction than the first extending surface in the first direction, and a first engaged portion located on the back side than the groove portion and adjacent to the first extending surface through the groove portion. The back side joint portion has a second engaged portion located on the back side than the second end surface and extending to the other side in the first direction than the second end surface. At the joint location where the front side joint portion of one wall material and the back side joint portion of the other wall material are joined in the first direction, the first engaged portion and the second engaged portion face each other with a gap in the first direction, the wall material according to claim 1.

13. A support material, A first wall material and a second wall material attached to the support material adjacent to each other in the first direction, A wall material construction structure comprising a fixture for attaching the first wall material and the second wall material to the support material, Each of the first wall material and the second wall material is the wall material according to any one of claims 1 to 12. The front joint portion of the first wall material and the back joint portion of the second wall material are joined together in the first direction. At the joint, the first end surface of the front joint portion and the second end surface of the back joint portion face each other with at least the first resin film filling the space therebetween, and the first extended surface of the front joint portion and the second extended surface of the back joint portion face each other with the second resin film filling the space therebetween. The wall material construction structure of the fixture includes a fixing portion fixed to the support material and a locking structure portion that locks the first wall material and the second wall material.

Images