Molding, molding wound body, molding system, building, and molding construction method

Abstract

This molding comprises a foam resin body and a non-foam resin coating layer. A groove portion extending in the longitudinal direction of the molding is provided in the front surface of the molding. The groove portion comprises: a first surface that faces more toward the back surface side of the molding as compared to the front surface side at a position farther from one side toward the other side in a direction intersecting with the longitudinal direction and also intersecting with the thickness direction of the molding; and a second surface that is located further closer to the other side as compared to the first surface, and that faces more toward the front surface side as compared to the back surface side. The molding has a third surface that is located further closer to the other side as compared to the second surface, and that extends from the one side toward the other side. The thickness of the coating layer is greater in the first surface than in the third surface.

Description

Molding, Molding Winding Body, Molding System, Building, and Construction Method of Molding

[0001] The present disclosure relates to a molding, a molding winding body, a molding system, a building, and a construction method of a molding. This application claims priority based on Japanese Patent Application No. 2024-212149 filed in Japan on December 05, 2024, and incorporates its content herein by reference.

[0002] As an example of a molding, a molding strip is known to be fixed to a wall made of a gypsum board or the like of a building by a pin nail or the like in order to be attached to a building molding material. The molding strip, for example, has a main body molded from a foamed resin and a coating layer molded from a non-foamed resin (see, for example, Patent Document 1).

[0003] Japanese Patent Application Laid-Open No. 2021-161687

[0004] Here, when fixing a conventional molding strip to a wall such as a gypsum board with a pin nail or the like, it may be structurally difficult to drive the pin nail into the back thick part. In this case, the workability of fixing the molding strip to a wall such as a gypsum board may be impaired. Furthermore, the function (fixing strength) of fixing the molding strip to a wall such as a gypsum board may be impaired.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a molding, a molding winding body, a molding system, a building, and a construction method of a molding that can ensure the workability of fixing the molding to a wall and further ensure the function of fixing the molding to a wall.

[0006] A molding according to one aspect of the present disclosure comprises a body made of foamed resin and a coating layer made of non-foamed resin provided on the outer surface of the body. A groove is provided on the front surface of the molding, extending in the longitudinal direction of the molding. The groove comprises a first surface extending from the front side to the back side of the molding as it moves from one side to the other in a direction that intersects the longitudinal direction and the thickness direction of the molding, and a second surface located on the other side of the first surface, extending from the back side to the front side. The molding has a third surface located on the other side of the second surface, extending from one side to the other. The thickness of the coating layer is greater on the first surface than on the third surface.

[0007] According to this disclosure, it is possible to provide molding, a molding wrap, a building, and a molding installation method that ensure ease of installation for fixing the molding to a wall, and further ensure the function of fixing the molding to a wall.

[0008] This is a perspective view showing a building according to the first embodiment of this disclosure. This is a cross-sectional view broken along line II-II in Figure 1. This is a perspective view of the molding according to the first embodiment, viewed from the front oblique side. This is a left side view of the molding in Figure 3, viewed from the front (left side) in the figure. This is an enlarged left side view of section V in Figure 4. This is a right side view of the molding in Figure 3, viewed from the back (right side) in the figure. This is a top view of the molding according to the first embodiment. This is a bottom view of the molding according to the first embodiment. This is a front view of the molding according to the first embodiment. This is a rear view of the molding according to the first embodiment. This is a perspective view of the molding winding body according to the first embodiment. This is a cross-sectional view illustrating the installation method of the molding according to the first embodiment. This is a front view showing the molding system according to the first embodiment. This is a perspective view from the front showing the fittings constituting the molding system according to the first embodiment. This is a perspective view from the rear showing the fittings constituting the molding system according to the first embodiment. This is a cross-sectional view showing the molding according to the second embodiment of this disclosure fixed to a wall. This is a perspective view of the molding according to the second embodiment, viewed from the front oblique side. This is a left side view of the molding in Figure 17, viewed from the front (left side) in the figure. This is a right side view of the molding in Figure 17, viewed from the rear (right) side in the figure. This is a top view of the molding according to the second embodiment. This is a bottom view of the molding according to the second embodiment. This is a front view of the molding according to the second embodiment. This is a rear view of the molding according to the second embodiment. This is a cross-sectional view illustrating the installation method of the molding according to the second embodiment. This is a left side view of the molding according to the third embodiment of this disclosure. This is a left side view of the molding according to the fourth embodiment of this disclosure. This is a left side view of the molding according to the fifth embodiment of this disclosure. This is a left side view of the molding according to the sixth embodiment of this disclosure. This is an enlarged left side view of section XXIX in Figure 28.

[0009] The following describes moldings, molding wraps, molding systems, buildings, and molding installation methods according to the embodiments of this disclosure with reference to the drawings. Here, we will use baseboards as an example of molding, but other types of moldings, such as crown moldings and trim, may also be used. When the molding is a baseboard, it is installed as an interior material of a building at the junction of the wall and the floor. Furthermore, when the molding is a baseboard, the vertical "top" when it is installed at the junction of the wall and the floor will be referred to as "top," and the vertical "bottom" when it is installed at the junction of the wall and the floor will be referred to as "bottom." In this case, the first side, which is one side in the direction that intersects (specifically perpendicularly) the longitudinal direction of the molding and also intersects (specifically perpendicularly) the thickness direction of the molding, is "bottom," and the second side, which is the other side in the direction that intersects (specifically perpendicularly) the longitudinal direction of the molding and also intersects (specifically perpendicularly) the thickness direction of the molding, is "top." Furthermore, if the molding is a baseboard, it is installed as an interior finishing material in the building at the junction of the wall with the ceiling. In this case, the molding is installed so that the "upper" side of the molding, as described above, is the lower side in the vertical direction, and the "lower" side of the molding, as described above, is the upper side in the vertical direction. In this case, the first side, which is one side in the direction that intersects (specifically perpendicularly) the longitudinal direction of the molding and also intersects (specifically perpendicularly) the thickness direction of the molding, becomes the "upper" side, and the second side, which is the other side in the direction that intersects (specifically perpendicularly) the longitudinal direction of the molding and also intersects (specifically perpendicularly) the thickness direction of the molding, becomes the "lower" side.

[0010] (First Embodiment) As shown in Figures 1 and 2, the building 200 includes, for example, a floor F, a wall W, a first back joist Bj1, a second back joist Bj2, a molding 1 which is a baseboard, and a plurality of fasteners 30. The wall W is formed, for example, of gypsum board that rises from the floor F. Wallpaper is attached to the surface of the gypsum board, for example. The thickness of the gypsum board is, for example, 12.5 mm. That is, the thickness of the wall W is, for example, 12.5 mm.

[0011] The first back joist Bj1 is made of wood, for example. The first back joist Bj1 is fixed, for example, on the back side Wb of the wall W, straddling the wall W and the floor F. The first back joist Bj1 is, for example, a member that reinforces the wall W and the floor F. The second back joist Bj2 is made of wood, for example, similar to the first back joist Bj1. The second back joist Bj2 is fixed, for example, on the back side Wb of the wall W, with an upward spacing relative to the first back joist Bj1. The second back joist Bj2 is, for example, a member that reinforces the wall W.

[0012] As shown in Figures 2 and 3, the molding 1 is installed at the junction of the wall W and the floor F. The molding 1 is fixed to the wall W by, for example, a plurality of fasteners 30 (described later) and adhesive parts (not shown). The molding 1 is made of a flexible, soft material as a whole. The fasteners 30 are driven into the molding 1, etc., by, for example, a work tool 31 (described later). Examples of fasteners 30 include nails and pin nails. A pin nail refers to a finishing nail that has no head or a small head diameter (a small difference between the body diameter and the head diameter). Hereinafter, "pin nails 30" will be used as an example of fasteners 30. Examples of work tools 31 include nailer heads. A "nailer head" is the head part of a nail gun. Hereinafter, "nailer heads 31" will be used as an example of work tool 31.

[0013] In the following explanation, the longitudinal direction of molding 1 will be the X direction, the thickness direction of molding 1 will be the Y direction, and the vertical direction of molding 1 will be the Z direction. Furthermore, in the Z direction, the side opposite the floor F will be considered upwards, and the side facing the floor F will be considered downwards.

[0014] As shown in Figures 2 to 10, the molding 1 has a main body 10 made of foamed resin and a coating layer 20 made of non-foamed resin. The molding 1 is a long object extending in the X direction. A groove 12 is provided on the front surface (molding front) 20f of the molding 1. The molding front 20f is located on the opposite side of the wall W and is the surface facing the interior R. The groove 12 is a decorative recess that is recessed in a roughly V shape from the molding front 20f toward the back surface (molding back) 20b of the molding 1. Regarding the position of the groove 12, it is preferable that the height from the bottom of the molding 1 to the lower end of the groove 12 is in the range of, for example, 0.4H to 0.48H, and the height from the bottom of the molding 1 to the upper end of the groove 12 is in the range of 0.52H to 0.6H, based on the height H of the molding 1. The molding back surface 20b is the surface facing the front surface Wf of the wall W. The molding back surface 20b and the molding front surface 20f are surfaces located on opposite sides of each other in the Y direction. The groove 12 extends in the longitudinal direction (X direction) of the molding 1. The groove 12 has a first surface 13, a second surface 14, a first curved portion 15, a second curved portion 16, and a third curved portion 17.

[0015] The first surface 13 is formed flat, for example, along the first virtual surface Vf1. The first virtual surface Vf1 is formed as an inclined surface with an upward slope from the front surface 20f of the molding to the back surface 20b of the molding, as it moves from the bottom surface 20a side of the molding (i.e., the lower side, which is one first side in a direction that intersects (specifically perpendicular) the longitudinal direction of the molding and intersects (specifically perpendicular) the thickness direction of the molding) to the top surface 20t side of the molding (i.e., the upper side, which is the other second side in a direction that intersects (specifically perpendicular) the longitudinal direction of the molding and intersects (specifically perpendicular) the thickness direction of the molding). In other words, the first surface 13 is formed as an inclined surface with an upward slope from the front surface 20f of the molding to the back surface 20b of the molding, as it moves from the bottom surface 20a side of the molding to the top surface 20t side of the molding. Here, the "inclined surface" may be a flat surface, a curved surface, or a composite surface which is an appropriate combination of a flat surface and a curved surface. In either case, the surface should be inclined with respect to the vertical plane. In the case of the first surface 13, the surface should generally have an upward slope from the front surface 20f of the molding 20f to the back surface 20b of the molding, as it moves from the bottom surface 20a of the molding 1 to the top surface 20t of the molding 1. If the inclined surface constituting the first surface 13 is a curved surface, it is preferable, for example, that it protrudes outward from the molding 1 in a curved shape.

[0016] The second surface 14 is formed flat, for example, along the second virtual surface Vf2. The second virtual surface Vf2 is located on the top surface 20t side of the molding 1 with respect to the first surface 13 (i.e., the upper side which is the second side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding). The second virtual surface Vf2 is formed as an inclined surface with an upward slope, moving from the back surface 20b side to the front surface 20f side of the molding as you move from the bottom surface 20a side to the top surface 20t side of the molding 1. The second virtual surface Vf2 intersects the first virtual surface Vf1 with a cross line Cl. By being formed along the second virtual surface Vf2, the second surface 14 is formed as an inclined surface with an upward slope, moving from the back surface 20b side to the front surface 20f side of the molding as you move from the bottom surface 20a side to the top surface 20t side of the molding 1. The second surface 14 does not necessarily have to be an upward slope; it is sufficient that it extends from the upper side of the first surface 13, which is located on the molding back surface 20b side of the molding front surface 20f, toward the molding front surface 20f side. Here, the second surface 14 may be a flat surface, a curved surface, or a composite surface which is an appropriate combination of a flat surface and a curved surface. In any case, the second surface 14 should generally extend from the upper side of the first surface 13 toward the molding front surface 20f side. Thus, the groove 12 comprises the first surface 13, which is an inclined surface that goes from the molding front surface 20f side toward the molding back surface 20b side as it goes from the bottom to the top, and the second surface 14, which is located above the first surface 13 and goes from the molding back surface 20b side toward the molding front surface 20f side.

[0017] The first surface 13 and the second surface 14 are connected by a first curved portion 15. The first curved portion 15 forms the bottom of the groove 12. The first curved portion 15 is formed in a concave shape toward the molding back surface 20b. That is, the groove 12 is a substantially V-shaped recess with a curved tip. Note that the groove 12 does not have to be formed in a curved shape at its tip; for example, it may be a V-shaped recess where two planes arranged in a V shape intersect at an acute angle. The second curved portion 16 connects the first surface 13 to the fourth surface 19 of the molding front surface 20f, which will be described later. The second curved portion 16 protrudes in a curved shape toward the outside of the molding 1, for example. The boundary position between the second curved portion 16 and the fourth surface 19 of the molding front surface 20f, which will be described later, is called the first point C1. The first point C1 is the lower end (starting point of curvature) of the second curved portion 16 and the lower end of the groove 12. The third curved portion 17 connects the second surface 14 to the third surface 18 of the molding front 20f, which will be described later. The third curved portion 17 protrudes outward from the molding 1 in a curved shape, for example. The boundary position between the third curved portion 17 and the third surface 18 of the molding front 20f, which will be described later, is called the second point C2. The second point C2 is the upper end (starting point of curvature) of the third curved portion 17 and also the upper end of the groove 12.

[0018] The reason for forming the groove 12 in a V-shape and providing the first curved portion 15, the second curved portion 16, and the third curved portion 17 in the groove 12 is as follows. That is, the groove 12 is the part that receives the nailer head 31 (see Figure 12). Therefore, in order to make it easier to receive the nailer head 31 into the groove 12, the groove 12 is made in a roughly V-shape and the tip is curved with the first curved portion 15. In addition, the first surface 13 of the groove 12 is connected to the second curved portion 16. Furthermore, the second surface 14 of the groove 12 is connected to the third curved portion 17. As a result, the angle of the nailer head 31 can be adjusted in the vertical direction, making it possible to accommodate various structural conditions of the building 200. This ensures that the driving direction of the nailer head 31 and the accuracy of driving the pin nail 30 by the nailer head 31 are appropriately ensured. Furthermore, the appearance of the molding 1 can be appropriately ensured. When driving in a pin nail 30, the nailer head 31 is brought into contact with the first surface 13, which is the target surface for driving the nail. At that time, it comes into contact with the third curved portion 17, thereby positioning it vertically relative to the molding 1.

[0019] In contrast, if the groove is shaped like a semicircle, for example, it becomes difficult to properly ensure the driving direction of the nailer head 31 and the accuracy of the pin nail 30 driven in by the nailer head 31. However, even when the groove is shaped like a semicircle, a relatively desirable appearance of the molding 1 can be ensured.

[0020] Furthermore, in the groove portion 12, the angle θ1 between the first surface 13 and the second surface 14 is set to be between 45° and 160°. The angle θ1 between the first surface 13 and the second surface 14 is, for example, the angle between the first virtual surface Vf1 and the second virtual surface Vf2 in a side view of the molding 1 viewed from the longitudinal direction. The angle θ1 can be measured, for example, by the following method. That is, the molding 1 is photographed from the longitudinal direction and an image is acquired. In the acquired image, the first surface 13 (first virtual surface Vf1), the second surface 14 (second virtual surface Vf2), and the intersection line Cl are defined. Based on the defined first surface 13, second surface 14, and intersection line Cl, the angle θ1 is measured on the image. The above applies when the first surface 13 is a flat surface and the second surface 14 is a flat surface. However, when the first surface 13 is a curved surface, the surface tangent to the center of the first surface 13 in a side view of the molding 1 from the longitudinal direction becomes the first virtual surface Vf1. When the second surface 14 is a curved surface, the surface tangent to the center of the second surface 14 in a side view of the molding 1 from the longitudinal direction becomes the second virtual surface Vf2. The angle between the first virtual surface Vf1 and the second virtual surface Vf2 becomes the angle θ1.

[0021] Hereinafter, the angle θ1 between the first surface 13 and the second surface 14 may be referred to as the "angle θ1 of the groove 12". The reason for setting the angle θ1 of the groove 12 to be 45° or more and 160° or less is as follows. That is, various patterns such as 7 mm and 4 mm are used for the pin nails 30 driven in by the nailer head 31. If the pin nail 30 has a head, the diameter of the head may be 3 mm or less, and is not particularly limited to 5 mm or less, 10 mm or less, etc. A smaller diameter head is less noticeable and has better aesthetic appeal. The length of the pin nail 30 may be 10 mm or more, and is not particularly limited to 20 mm or more, 30 mm or more, 40 mm or more, etc. Various types of nailer heads 31 are used to correspond to each pin nail 30 pattern. Therefore, the angle θ1 of the groove 12 was set to be 45° or more and 160° or less. Furthermore, it is more preferable for the angle of the groove 12 to be 90° or more and 120° or less.

[0022] Furthermore, the width Wi1 of the groove 12 was set to 3 mm or more and 10 mm or less, more preferably 4 mm or more and 7 mm or less. The width Wi1 of the groove 12 may be 20 mm or less. The depth De1 of the groove 12 was set to 3 mm or more and 10 mm or less, more preferably 4 mm or more and 5 mm or less. The depth De1 of the groove 12 may be 15 mm or less. The width Wi1 is, for example, the distance in the Z direction from the first point C1 to the second point C2. The depth De1 is, for example, the distance in the Y direction from the molding face 20f to the bottom of the groove 12. In this way, the angle θ1, width Wi1, and depth De1 of the groove 12 were set. As a result, the groove 12 can accept various types of nailer heads 31 corresponding to the patterns of each pin nail 30.

[0023] Furthermore, the first surface 13 is the surface that the tip 31a (see Figure 12) of the nailer head 31 contacts. The inclination angle θ2 of the first surface 13 is 20° or more and 45° or less, more preferably 30° or more and 40° or less. The inclination angle θ2 of the first surface 13 is the angle of the first surface 13 (first virtual surface Vf1) with respect to the molding front surface 20f. Therefore, by bringing the tip 31a of the nailer head 31 into contact with the first surface 13, the nailer head 31 can be inclined with respect to the molding front surface 20f. As a result, the nailer head 31 can drive in the pin nail 30 at an inclination with respect to the first surface 13 of the molding front surface 20f.

[0024] Furthermore, the width Wi1 and depth De1 of the groove 12, and the inclination angle θ2 of the first surface 13 can also be measured, for example, based on an image of the molding 1 taken from the longitudinal direction. In the first embodiment, an example is described in which the first surface 13 is formed as a plane along the first virtual surface Vf1 and the second surface 14 is formed as a plane along the second virtual surface Vf2, but the invention is not limited to this. As another example, for example, the first surface 13 may be formed as a curved surface along the first virtual surface Vf1 and the second surface 14 may be formed as a curved surface along the second virtual surface Vf2.

[0025] Multiple pin nails 30 are driven into the first surface 13 of the groove 12 at intervals in the longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the first surface 13. Therefore, the pin nails 30 are driven into the molding 1, the wall W, and the first back joist Bj1 from the first surface 13 at an inclination angle θ5 of 40° to 80°, more preferably 50° to 60°, with respect to the molding front surface 20f.

[0026] The molding back surface 20b is the surface that comes into contact with the wall W's front surface Wf when the molding 1 is installed, for example, via an adhesive portion (not shown). On the molding back surface 20b, for example, in the vertical direction, the main body 10 is exposed from the covering layer 20 in the central part (i.e., a part of the molding back surface 20b) 20b3, excluding the upper part 20b1 and the lower part 20b2. That is, the central part 20b3 is formed by the portion of the main body 10 that is exposed from the covering layer 20. The main body 10 and the covering layer 20 will be described in detail later. In the first embodiment, an example is described in which the main body 10 is exposed from the covering layer 20 in the central part 20b3 of the molding back surface 20b, but it is not limited to this. As another example, for example, the main body 10 may be exposed from the covering layer 20 over the entire molding back surface 20b.

[0027] A recess 22 is provided in the central part 20b3 of the back surface 20b of the molding. The recess 22 is a roughly U-shaped recess extending from the back surface 20b of the molding toward the front surface 20f of the molding. The recess 22 extends in the longitudinal direction of the molding 1. When the molding 1 is installed, the recess 22 opens toward the front surface Wf of the wall W. The molding 1 is attached to the wall W via an adhesive portion (not shown). The recess 22 allows the adhesive portion (specifically, adhesive, etc.) used to attach the molding 1 to the wall W to escape into the recess 22. As a result, the recess 22 can prevent the adhesive, etc. from overflowing from between the molding 1 and the front surface Wf of the wall W. In addition, a cover-like fitting may be provided at the corner of the wall W to enhance the design by creating continuity at the junction of two moldings 1, and in that case, it is also possible to insert the projection of this fitting into the recess 22. The recess 22 only needs to be able to release excess adhesive or other material, or to allow the protrusion of a molding accessory to be inserted, and its shape is not limited to a roughly U-shape, but can be any shape. In this specification, "molding accessories" refers to special-shaped parts such as end covers that are connected to the ends of the molding.

[0028] The bottom surface (molding bottom surface) 20a of the molding 1 is formed flat, for example, along the floor F. The top surface (molding top surface) 20t of the molding 1 has, for example, a first top surface 20t1 and a second top surface 20t2. The first top surface 20t1 is formed along the molding bottom surface 20a. The second top surface 20t2 extends inclined from the first top surface 20t1 to the upper end of the molding front surface 20f. The molding front surface 20f has a third surface 18 above the groove 12 and a fourth surface 19 below the groove 12. Both the third surface 18 and the fourth surface 19 spread out in a planar manner along the longitudinal direction of the molding 1 in the vertical direction. The third surface 18 spreads upward from the upper end (second point C2) of the third curved portion 17 on the molding front surface 20f side and is connected to the end of the second top surface 20t2 on the molding front surface 20f side. The fourth surface 19 extends downward from the lower end (first point C1) on the molding front surface 20f side of the second curved portion 16 and is connected to the end of the molding bottom surface 20a on the molding front surface 20f side. The molding front surface 20f of the molding 1 has a third surface 18 that is located above (the second side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding) with respect to the second surface 14 of the groove portion 12, and extends from the lower side (the first side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding) to the upper side (the second side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding). Furthermore, the molding surface 20f of the molding 1 is located below the first surface 13 of the groove 12 (the first side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding) and has a fourth surface 19 that extends from the upper side (the second side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding) to the lower side (the first side in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding).

[0029] The covering layer 20 is provided on the outer surface of the main body 10. The covering layer 20 covers, for example, the front (main body front) 10f, the top (main body top) 10t, the bottom (main body bottom) 10a, the upper rear 10b1, and the lower rear 10b2 of the main body 10. The upper rear 10b1 is the upper part of the rear (main body rear) 10b of the main body 10. The lower rear 10b2 is the lower part of the rear 10b of the main body. In other words, the covering layer 20 covers the surface of the main body 10 except for the central part 10b3 and both ends in the longitudinal direction of the rear 10b of the main body. The central part 10b3 forms the central part 20b3 of the molding rear 20b. The portion of the covering layer 20 that covers the upper rear 10b1 forms the upper part 20b1 of the molding rear 20b and abuts against the front Wf of the wall W. This configuration ensures that the entire top surface 20t of the molding is covered by the covering layer 20, thereby enhancing its aesthetic appeal. Furthermore, the portion of the covering layer 20 that covers the lower back portion 10b2 forms the lower part 20b2 of the molding back portion 20b and abuts against the front surface Wf of the wall W.

[0030] The length of molding 1 in the X direction is not particularly limited, and may be, for example, 50 cm or more and 30 m or less. The height H (Z direction) of molding 1 is less than 15 cm (150 mm), preferably 15 mm or more and less than 150 mm, more preferably 20 mm or more and 70 mm or more, and even more preferably 35 mm or less and 60 mm or more. If the height H is less than or equal to the above upper limit, the flexibility of molding 1 in the longitudinal direction can be further increased, and ease of installation can be improved. If the height H is greater than or equal to the above lower limit, the function of molding 1 as protecting the front Wf of wall W can be improved.

[0031] The thickness T1 of the molding 1 is preferably, for example, 3 mm or more and 20 mm or less, and more preferably 5 mm or more and 10 mm or less. The thickness T1 is the length in the Y direction from the front surface 20f of the molding 1 to the back surface 20b of the molding 1. If the thickness T1 is less than or equal to the above upper limit, the flexibility of the molding 1 in the X direction can be further increased, and ease of installation can be improved. If the thickness T1 is greater than or equal to the above lower limit, the impact resistance can be further increased.

[0032] The 100% modulus of molding 1 is preferably 5 MPa or more and 20 MPa or less, and more preferably 10 MPa or more and 15 MPa or less. If the 100% modulus is above the lower limit, the strength of the molding can be increased. If the 100% modulus is below the upper limit, it is sufficiently soft and has superior flexibility. The 100% modulus is a value determined by a tensile test in accordance with "JIS K6251:2010 Method for determining tensile properties".

[0033] The main body 10 is made of a soft, flexible foamed resin. The foamed resin forming the main body 10 is soft. The resins that make up the main body 10 are preferably thermoplastic resins, thermoplastic elastomers, or rubber.

[0034] Examples of thermoplastic resins include flexible polyvinyl chloride (PVC) resin, polyolefin resins such as polyethylene resin and polypropylene resin, mixtures of polyolefin resin and polystyrene resin, ABS resin, acrylic resin, polycarbonate resin, and mixtures thereof. Examples of thermoplastic elastomers include flexible polyvinyl chloride resin, polyolefin-based thermoplastic elastomers, chlorinated polyethylene-based thermoplastic elastomers, polystyrene-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, polyamide-based thermoplastic elastomers, and mixtures thereof. Examples of rubbers include diene-based rubbers such as styrene-butadiene rubber, isoprene rubber, chloroprene rubber, and acrylonitrile-butadiene rubber, as well as butyl rubber, ethylene-propylene-diene rubber, silicone rubber, and mixtures thereof.

[0035] In particular, polyolefin resin and flexible polyvinyl chloride are preferred as the resin constituting the main body 10, with polyolefin resin being more preferred. These resins have low glass transition temperatures, making it easier to adjust the foaming pressure with the foaming agent and allowing for a higher percentage of closed cells in the main body 10. The main body 10 may also contain optional components such as foaming nucleating agents, surfactants, lubricants, pigments, and plasticizers.

[0036] The coefficient of linear expansion of the main body 10 is 7.5 × 10⁻⁶. －５Preferably below / ℃, 7.0 × 10 －５ / ℃ or lower is more preferable, 5.0 × 10 －５ A value of less than / °C is even more preferable. The coefficient of linear expansion of the main body 10 is a value measured in accordance with JIS K7197:1991.

[0037] The durometer hardness A of the main body 10 is preferably 50 or more and 80 or less, and more preferably 60 or more and 70 or less. The durometer hardness A is a value measured according to JIS 7215:1986.

[0038] The foaming ratio of the main body 10 is preferably 1.1 times or more and 5 times or less, more preferably 1.5 times or more and 4.5 times or less, and even more preferably 2.0 times or more and 3.5 times or less. If the foaming ratio is above the lower limit, the transmission of impact sounds to adjacent rooms can be further reduced. If the foaming ratio is below the upper limit, the physical strength of the molding 1 can be further increased. The foaming ratio of the main body 10 is adjusted by a combination of the type or composition of the foaming agent, foaming conditions (heating temperature, heating time, etc.), etc. Note that the foaming ratio is determined by the density (g / cm³) of the unfoamed resin composition constituting the main body 10. ３ ) The apparent density (g / cm³) of the main body 10 after foaming ３ This is the value obtained by dividing by ( ).

[0039] The closed-cell ratio of the main body 10 is preferably 30% or more and 100% or less, more preferably 40% or more and 99% or less, and even more preferably 50% or more and 99% or less. If the closed-cell ratio is above the lower limit, gas in the cells will not easily escape from the back surface 10b of the main body, and the shrinkage of the main body 10 can be suppressed more effectively. If the closed-cell ratio is below the upper limit, the physical strength of the molding 1 can be increased. The closed-cell ratio is measured in accordance with JIS K 7138:2006.

[0040] The central portion 20b3 of the molding back surface 20b is formed by the central portion 10b3 that is exposed from the coating layer 20 in the main body 10. The central portion 20b3 of the molding back surface 20b is, for example, a surface of a foamed resin. If it is a surface of a foamed resin, it becomes an appropriate rough surface, and the adhering portion such as an adhesive or a double-sided tape adheres firmly to the central portion 20b3 of the molding back surface 20b. Therefore, it is preferable that the main body 10 does not have a skin layer at the central portion 20b3 of the molding back surface 20b.

[0041] The arithmetic mean height Sa at the central portion 20b3 of the molding back surface 20b is preferably, for example, 10 μm or more and 300 μm or less, and more preferably 20 μm or more and 200 μm or less. If the arithmetic mean height Sa at the central portion 20b3 of the molding back surface 20b is within the above range, the molding 1 can be adhered more firmly to the wall W. Note that for the arithmetic mean height Sa, the value defined in ISO 25178 (Surface texture (Surface roughness measurement)) is used. The arithmetic mean height Sa can be measured by a surface roughness measuring instrument (Surface roughness measuring machine ZeGage Pro manufactured by ZYGO).

[0042] The maximum height Sz at the central portion 20b3 of the molding back surface 20b is preferably, for example, 100 μm or more and 2000 μm or less, and more preferably 200 μm or more and 1500 μm or less. If the maximum height Sz at the central portion 20b3 of the molding back surface 20b is within the above range, the molding 1 can be adhered more firmly to the wall W. Note that for the maximum height Sz, the value defined in ISO 25178 (Surface texture (Surface roughness measurement)) is used. The maximum height Sz can be measured by a surface roughness measuring instrument (Surface roughness measuring machine ZeGage Pro manufactured by ZYGO).

[0043] The coating layer 20 is a non-foamed resin. The type of resin constituting the coating layer 20 is the same as that of the main body 10. Note that the "non-foamed resin" does not exclude those with slight foaming. For example, resins with a foaming ratio of 1.05 times or less are also included in the non-foamed resins. The type of resin constituting the coating layer 20 and the type of resin constituting the main body 10 may be the same or different. However, since it is easy to integrally mold the coating layer 20 and the main body 10, it is preferable that the resin constituting the coating layer 20 and the resin constituting the main body 10 include the same type of resin, and the same type of resin is preferred.

[0044] The resins being of the same type means that the resin most contained in the resin need only be the same. For example, a resin of 100% by mass of polyethylene resin and a resin of 60% by mass of polyethylene resin and 40% by mass of polypropylene resin are of the same type of resin because the most contained resin is polyethylene resin. The coating layer 20 may contain optional components such as surfactants, lubricants, talc, pigments, etc.

[0045] The thickness T20 of the coating layer 20 is, for example, preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less. If the thickness T20 is at least the above lower limit value, damage to the main body 10 can be prevented against an external impact. If the thickness T20 is at most the above upper limit value, the flexibility can be further enhanced. Here, the thickness T20 of the coating layer 20 may be uniformly uniform, but it is preferably in an uneven thickness state where the thickness T20 is partially different. The thickness T20 of the coating layer 20 is more preferably such that the thickness T20 of the portion constituting the first surface 13 is larger (thicker) than the thickness T20 of the portion constituting the third surface 18. The thickness T20 of the coating layer 20 is even more preferably such that the thickness T20 of the portion constituting the first surface 13 is increased in the range of 1.5 times or more and 3 times or less with respect to the thickness T20 of the portion constituting the third surface 18.

[0046] As an example, the thickness T20 of the coating layer 20 of the molding 1 according to the first embodiment is such that the thickness T20 of the portion constituting the first surface 13, the thickness T20 of the portion constituting the second curved portion 16, and the thickness T20 of the portion constituting the fourth surface 19 are substantially equal.

[0047] Furthermore, the thickness T20 of the portion constituting the second surface 14, the thickness T20 of the portion constituting the third curved portion 17, the thickness of the portion constituting the third surface 18, the thickness T20 of the portion constituting the first top surface 20t1, the thickness T20 of the portion constituting the second top surface 20t2, the thickness T20 of the portion constituting the molding bottom surface 20a, the thickness T20 of the portion constituting the upper part 20b1 of the molding back surface 20b, and the thickness T20 of the portion constituting the lower part 20b2 of the molding back surface 20b are approximately equal, and are smaller (thinner) than the thickness T20 of the portion constituting the first surface 13, the thickness T20 of the portion constituting the second curved portion 16, and the thickness T20 of the portion constituting the fourth surface 19.

[0048] Furthermore, the thickness T20 of the portion constituting the first curved portion 15 is such that the thickness T20 of the portion connected to the portion constituting the first surface 13 is the same as the thickness T20 of the portion constituting the first surface 13, and the thickness T20 of the portion connected to the portion constituting the second surface 14 is the same as the thickness T20 of the portion constituting the second surface 14, and the thickness T20 gradually decreases as you move from the first surface 13 side toward the second surface 14 side. Note that the thickness T20 of the coating layer 20 is not limited to this example and can be of various thicknesses T20, but it is preferable that the thickness T20 of the portion constituting the first surface 13 be greater (thicker) than the thickness T20 of the portion constituting the third surface 18.

[0049] The coefficient of linear expansion of the coating layer 20 is 7.5 × 10⁻⁶. －５ Preferably below / ℃, 7.0 × 10 －５ / ℃ or lower is more preferable, 5.0 × 10 －５ A temperature of / ℃ or lower is even more preferable.

[0050] The durometer hardness A of the coating layer 20 is preferably 40 or more and 90 or less, more preferably 50 or more and 80 or less, and even more preferably 60 or more and 70 or less.

[0051] The pencil hardness of the coating layer 20 is preferably 5B or higher.

[0052] As a method for manufacturing the molding 1, for example, a method of integrally molding the main body 10 and the coating layer 20 by co-extrusion is preferred. That is, the molding 1 of this disclosure is preferably a co-extruded product. An example of a method for manufacturing the molding 1 by co-extrusion will be described. The resin, foaming agent, and optional components constituting the main body 10 are kneaded to obtain a first resin composition. The resin and optional components constituting the coating layer 20 are kneaded to obtain a second resin composition. The first resin composition contains the resin, foaming agent, and optional components.

[0053] The blowing agent is not particularly limited, but examples include decomposition-type blowing agents, chemical blowing agents such as thermally expandable capsules, and physical blowing agents such as compressed gases. Among these, chemical blowing agents are preferred, and thermally expandable capsules are more preferred. By using a chemical blowing agent, it is easier to form fine irregularities on the surface of the back surface 10b of the main body (specifically, the central part 10b3 of the back surface 10b of the main body), and the closed-cell ratio of the main body 10 can be further increased. Examples of decomposition-type blowing agents include sodium bicarbonate (sodium hydrogen carbonate), sodium carbonate, ammonium bicarbonate, ammonium nitrite, azodicarbonamide, azobisisobutyronitrile, p,p'-oxybisbenzenesulfone hydrazide, and N,N'-dimethyl-N,N'-dinitrosotelephthalamide.

[0054] Examples of thermally expandable capsules include capsules in which volatile low-boiling point hydrocarbons are encapsulated within a thermoplastic resin. Examples of compressed gases include carbon dioxide, nitrogen, and air. The content of the blowing agent is preferably 1 to 15 parts by mass, and more preferably 2 to 10 parts by mass, per 100 parts by mass of resin.

[0055] A molten first resin composition and a molten second resin composition are co-extruded. The melting temperature of the first resin composition is, for example, 90 to 180°C. The melting temperature of the second resin composition is, for example, 90 to 180°C. The extruded first resin composition foams under atmospheric pressure to form the main body 10. The extruded second resin composition spreads along the extrusion direction onto the surface of the main body 10 and hardens to form a coating layer 20. In this way, a long molding 1 is obtained in which the top surface 10t, front surface 10f, bottom surface 10a, upper back surface 10b1, and lower back surface 10b2 of the main body are covered with the coating layer 20. The obtained molding 1 may be cut to any length as needed. Alternatively, the long molding 1 may be wound to form a molded winding body 100. The molded winding body 100 will be explained in detail in Figure 11.

[0056] Another example of a manufacturing method for molding 1 is to obtain a molding precursor in which the back surface 10b, top surface 10t, front surface 10f, and bottom surface 10a of the main body are covered with a coating layer 20, and then scrape off the coating layer 20 on the back surface of this molding precursor to obtain molding 1.

[0057] Next, the molding winding body 100 will be described with reference to Figures 3, 4, and 11. As shown in Figures 3 and 11, the long molding 1 becomes the molding winding body 100 when it is wound up. The molding winding body 100 is made by winding the long molding 1 with the molding back surface 20b facing outwards. The molding winding body 100 is secured with a cable tie 120. Examples of cable ties 120 include cable ties, wire, string, and adhesive tape. Since the molding 1 becomes the molding winding body 100 when it is wound up with the molding back surface 20b facing outwards, a protective film may be provided so as to be in contact with the molding back surface 20b, thereby protecting the molding body 10 made of foam resin.

[0058] The reason for winding a long piece of molding 1 with the back surface 20b facing outwards is as follows: On the back surface 20b of the molding 1, the central part 10b3 of the main body 10 is exposed at the central part 20b3, and the covering layer 20 is exposed at the front surface 20f of the molding. The main body 10 is molded from foamed resin. The covering layer 20 is molded from non-foamed resin. Foamed resin expands and contracts more than non-foamed resin. Therefore, for example, if a long piece of molding 1 is wound with the back surface 20b facing inwards, the foamed resin will shrink more. As a result, when the long piece of molding 1 is unwound from the wound state, a large curl is likely to remain in the foamed resin. Consequently, when unwinding a long piece of molding 1 from the wound state, a gap is likely to occur between the molding 1 and the wall W, and the workability of the molding 1 is likely to be impaired.

[0059] Therefore, in the molding winding body 100, the long molding 1 is wound with the back surface 20b of the molding facing outwards. As a result, the shrinkage of the foamed resin can be kept to a minimum compared to when the long molding 1 is wound with the back surface 20b facing inwards. Consequently, when the long molding 1 is unwound from the wound state, the curling of the foamed resin can be kept to a minimum.

[0060] Specifically, the curvature of the molding 1, which was obtained by unwinding the molding winding 100 and cutting it to a length of 1 m, was compared between the comparative example and the embodiment. The molding winding of the comparative example was obtained by winding a long piece of molding 1 with the molding back surface 20b facing inward. In the case of the molding winding of the comparative example, at the time of installation after curing for 24 hours in an environment of 23°C, the distance from the front surface Wf of the wall W (see Figure 2) to the center of the molding 1 was 100 mm, and the distance from the front surface Wf of the wall W to the end of the molding 1 was 30 mm.

[0061] In the embodiment, the molding winding body 100 is made by winding a long piece of molding 1 with the molding back surface 20b facing outwards. In the case of the molding winding body 100 of the embodiment, when installed after curing for 24 hours in an environment of 23°C, the distance from the front surface Wf of the wall W to the center of the molding 1 was 0 mm, and the distance from the front surface Wf of the wall W to the end of the molding 1 was 65 mm. As a result, the molding winding body 100 of the embodiment can suppress the occurrence of a gap between the molding 1 and the front surface Wf of the wall W when unwinding the long piece of molding 1 from the wound state, compared to the molding winding body of the comparative example.

[0062] Furthermore, the molding winding body 100 of the embodiment can suppress damage to the molding front surface 20f compared to the molding winding body of the comparative example. This makes it possible to avoid the risk of external damage during storage and transportation of the molding winding body 100. In addition, the molding winding body 100 of the embodiment can improve workability by controlling the winding tendency during installation and eliminating work loss due to the effect of winding tendency. Moreover, the molding winding body 100 of the embodiment can eliminate reliance on individual skill by enabling stable installation regardless of the skill level of the installer. Furthermore, in the two-layer molded product of the molding 1, the molding winding body 100 of the embodiment can ignore the effect of thermal influence on linear expansion between the non-foamed layer and the foamed layer.

[0063] Here, as shown in Figure 4, the molding 1 has a groove 12 on the molding surface 20f. The groove 12 is formed in a roughly V-shape by the first surface 13 and the second surface 14. For this reason, for example, if the foamed resin has a large curl, as in the comparative example, it is necessary to straighten the curl of the foamed resin when installing the molding 1. When straightening the curl of the foamed resin, stress concentrates at the bottom of the groove 12, and there is a risk that the molding 1 will be damaged from the groove 12. In contrast, by suppressing the curl of the foamed resin to a small extent, as in the embodiment, the molding 1 can be installed without damaging the molding 1 from the bottom of the groove 12.

[0064] Next, the process of installing molding 1 on a wall W in the molding installation method will be explained with reference to Figures 11 and 12. As shown in Figure 11, for example, a molding winding body 100 is brought to the construction site. The molding winding body 100 is compact because a long piece of molding 1 is wound up, making it easy to bring to the construction site. At the construction site, the molding 1 is unwound from the molding winding body 100 and cut to the appropriate length for the installation location. Since molding 1 is soft, it can be easily cut with a utility knife or the like. In addition, the central part 10b3 of the main body back surface 10b is exposed on the back surface 20b of the molding, so it can be easily cut with scissors or a utility knife. For this reason, there is no need to use a table saw or the like, and it does not generate much noise. In addition, even if the installation area is long, molding 1 can be installed without forming joints. For this reason, even under conditions where construction time is limited, such as in the renovation of apartment buildings, the work can be completed quickly.

[0065] An adhesive is applied to the back surface 20b of the cut molding 1, or double-sided tape is attached. The adhesive is not particularly limited, and examples include urethane adhesives and acrylic adhesives. In addition, the central part 10b3 (see Figure 12) of the main body 10 is exposed on the back surface 20b of the molding. The central part 10b3 is made of foamed resin. Therefore, sufficient adhesion can be obtained by using a vinyl acetate adhesive.

[0066] Next, as shown in Figure 12, the molding 1 is attached to the wall by pressing the back surface 20b of the molding against the front surface Wf of the wall W. In this way, the adhesive or double-sided tape on the back surface 10b of the main body becomes the attachment area (not shown).

[0067] In this state, the nailer head 31 is placed in the groove 12. The angle θ1 of the groove 12 is 45° or more and 160° or less. Therefore, the groove 12 can accommodate various types of nailer heads 31. When the nailer head 31 is received in the groove 12, its tip 31a is in contact with the first surface 13. As a result, the nailer head 31 is kept in an inclined state with respect to the molding surface 20f at a predetermined inclination angle θ5.

[0068] In this state, the nailer head 31 drives multiple pin nails 30 into the first surface 13 at intervals along the longitudinal direction of the molding 1. The multiple pin nails 30 are driven into the molding 1, the wall W, and the first back joist Bj1 at a predetermined inclination angle θ5 with respect to the molding front surface 20f. The molding 1 is fixed to the wall W with the molding back surface 20b in contact with the wall W. This completes the process of installing the molding 1 to the wall W.

[0069] As shown in Figure 13, the molding system 400 comprises a molding 1 and a trim piece 401. The trim piece 401 covers the end of the molding 1 to enhance its aesthetic appearance and has the shape shown in Figures 14 and 15. The trim piece 401 comprises a front cover portion 411 that covers the front surface 20f of the molding 1, an end cover portion 412 that covers the end face of the longitudinal end of the molding 1, and a top cover portion 413 that covers the top surface 20t of the molding 1. The front cover portion 411 has rib-shaped portions 415 that are recessed from the outer surface on the front side toward the rear side and protrude from the inner surface on the rear side toward the rear side. The rib-shaped portions 415 fit into the groove portion 12 of the molding 1 when the front cover portion 411 covers the front surface 20f of the molding. The trim piece 401 is joined to the molding 1, for example, by an adhesive or double-sided tape provided between the molding 1 and the front cover portion 411. Furthermore, the molding system 400 only needs to include molding 1 and trim pieces. In addition to trim pieces 401 that cover the ends of molding 1 to enhance the design, the system may also be a combination of any trim piece and molding 1, such as a cover-like trim piece provided to enhance the design by creating continuity at the junction of two moldings 1 in a wall corner.

[0070] As described above, in the molding 1 according to the first embodiment, the thickness T20 of the coating layer 20 on the first surface 13, which extends from the front surface 20f of the molding to the back surface 20b of the molding, is greater than the thickness T20 of the coating layer 20 on the third surface 18, which is located above the second surface 14, which is located above the first surface 13 and extends from the back surface 20b of the molding to the front surface 20f of the molding, and extends from the bottom to the top. Therefore, the pin nail 30 can be driven into the first surface 13, which has a thicker coating layer T20, with the nailer head 31. This increases the frictional force applied from the non-foamed resin coating layer 20 to the pin nail 30 during driving, thereby preventing the pin nail 30 from penetrating the coating layer 20 and coming out to the foamed resin body 10. As a result, the molding 1 can be easily and reliably fixed to the wall W with the pin nail 30. Therefore, it is possible to provide a molding 1 that ensures ease of installation for fixing the molding 1 to the wall W, and furthermore, that ensures the function of fixing the molding 1 to the wall W.

[0071] Furthermore, the molding back surface 20b has an arithmetic mean height Sa of 10 μm or more and 300 μm or less, and a maximum height Sz of 100 μm or more and 2000 μm or less. This allows the molding 1 to be firmly attached to the wall W with adhesive or double-sided tape.

[0072] A groove 12 is provided on the front surface 20f of the molding. The groove 12 has a first surface 13 and a second surface 14. The first surface 13 extends from the front surface 20f of the molding to the back surface 20b of the molding as you move from the bottom to the top. The second surface 14 is located above the first surface 13 and extends from the back surface 20b of the molding to the front surface 20f of the molding as you move from the bottom to the top. Therefore, the first surface 13 allows the nailer head 31 to be tilted relative to the front surface 20f of the molding while the tip 31a of the nailer head 31 is in contact with it. The second surface 14 can also receive the tip 31a of the nailer head 31 in contact with the first surface 13.

[0073] Here, various types of pin nails 30, such as 7mm patterns and 4mm patterns, can be used in the nailer head 31. If the pin nail 30 has a head, the diameter of the head may be 3mm or less, but is not particularly limited to 5mm or less, 10mm or less, etc. A smaller diameter head is less noticeable and has better aesthetic appeal. The length of the pin nail 30 may be 10mm or more, but is not particularly limited to 20mm or more, 30mm or more, 40mm or more, etc. Therefore, various types of nailer heads 31 can be used to correspond to the patterns of each pin nail 30. Accordingly, the angle θ1 of the groove 12 was set to 45° or more and 160° or less. The width Wi1 of the groove 12 was set to 3mm or more and 10mm or less. The depth De1 of the groove 12 was set to 3mm or more and 10mm or less. As a result, the groove 12 can accommodate various types of nailer heads 31 corresponding to the patterns of each pin nail 30. Furthermore, the nailer head 31 can be tilted relative to the molding front surface 20f by bringing its tip 31a into contact with the first surface 13. In this state, the nailer head 31 can drive the pin nail 30 in at an angle relative to the first surface 13 of the molding front surface 20f.

[0074] Furthermore, on the back side Wb of the wall W, for example, a first back joist Bj1 and a second back joist Bj2 may be arranged with a gap in the vertical direction. Therefore, the inclination angle θ2 of the first surface 13 with respect to the molding front surface 20f is set to 20° or more and 45° or less. In this state, by positioning the nailer head 31 in the groove 12, the pin nail 30 can be driven into the molding 1 at a predetermined inclination angle θ5 (40° or more and 80° or less). Thus, the pin nail 30 can be easily driven into the first back joist Bj1, and the time required to fix the molding 1 can be greatly reduced. This ensures ease of installation for fixing the molding 1 to the wall W, and furthermore, ensures the function of fixing the molding 1 to the wall W. In addition, from an environmental perspective, the amount of unnecessary pin nails 30 can be reduced, resulting in a reduction in waste.

[0075] Furthermore, because the pin nail 30 is inclined relative to the molding 1, it is possible to drive the pin nail 30 further into the molding 1 and wall W compared to when it is not inclined, thereby ensuring sufficient penetration. Therefore, in various structural conditions of the building 200, even if the pin nail 30 is not driven into the first back joist Bj1, the anchoring force between the pin nail 30 and the molding 1 and wall W is increased, making it easier to fix the molding 1 to the wall W.

[0076] Furthermore, considering the case where the pin nails 30 cannot be driven into the first back joist Bj1, the thickness T1 of the molding 1 is ensured to be between 3 mm and 15 mm. The pin nails 30 are driven into the molding 1 at a predetermined inclination angle θ5 (between 40° and 80°). Therefore, a large amount of penetration of the pin nails 30 into the molding 1 and the wall W can be ensured. As a result, even if the pin nails 30 cannot be driven into the first back joist Bj1, the molding 1 can be securely fixed to the wall W with the pin nails 30.

[0077] Here, when attaching the molding 1 to the wall W with an adhesive (not shown), it is conceivable that the adhesive may ooze out from between the molding 1 and the wall W. Therefore, a recess 22 is provided on the back surface 20b of the molding. Thus, the adhesive between the molding 1 and the wall W can be directed into the recess 22. In this way, the recess 22 can prevent the adhesive from oozing out from between the molding 1 and the wall W.

[0078] According to the building 200 of the first embodiment described above, a groove 12 is provided in the molding 1, and a pin nail 30 is driven into the first surface 13 of the groove 12. Therefore, the pin nail 30 can be driven in at a predetermined inclination angle θ5 (40° or more, 80° or less) relative to the front surface 20f of the molding. This makes it easy to drive the pin nail 30 into the first back joist Bj1. Thus, ease of installation for fixing the molding 1 to the wall W can be ensured, and furthermore, the function of fixing the molding 1 to the wall W can be ensured.

[0079] Furthermore, because the pin nail 30 is inclined with respect to the molding front 20f, it is possible to drive the pin nail 30 further into the molding 1 and wall W compared to when it is not inclined, thereby ensuring sufficient penetration. Therefore, even if the pin nail 30 is not driven into the first back joist Bj1, the anchoring force between the pin nail 30 and the molding 1 and wall W is increased, making it easier to fix the molding 1 to the wall W.

[0080] According to the installation method for the molding 1 according to the first embodiment described above, first, the molding 1 is placed so that its back surface 20b is in contact with the wall W. Next, a nailer head 31 is placed in the groove 12 of the molding 1. Then, the nailer head 31 is used to drive a pin nail 30 into the molding 1 and the wall W at a predetermined inclination angle θ5 (40° or more, 80° or less) relative to the front surface 20f of the molding. As a result, the pin nail 30 can be easily driven into the first back joist Bj1. This ensures ease of installation for fixing the molding 1 to the wall W, and further ensures the function of fixing the molding 1 to the wall W.

[0081] According to the molding winding body 100 of the first embodiment described above, the long molding 1 is wound with the molding back surface 20b facing outwards. Therefore, when the long molding 1 is unwound from the wound state, the curling of the foamed resin can be kept to a minimum. This prevents gaps from forming between the molding 1 and the wall W when the long molding 1 is unwound from the wound state during installation. Thus, ease of installation for fixing the molding 1 to the wall W can be ensured, and the function of fixing the molding 1 to the wall W can also be ensured. In addition, it eliminates reliance on individual skill by enabling stable installation regardless of the skill level of the installer. Furthermore, by keeping the curling of the foamed resin to a minimum, the molding 1 can be installed from the bottom of the groove 12 without damaging the molding 1. This further improves the ease of installation for fixing the molding to the wall.

[0082] According to the molding system 400 of the first embodiment, since it includes a molding 1 and a fitting 401, it is possible to ensure ease of installation for fixing the molding 1 to the wall W, and furthermore, it is possible to ensure the function of fixing the molding 1 to the wall W.

[0083] Next, the second embodiment will be described with reference to Figures 16 to 24. In the second embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0084] (Second Embodiment) As shown in Figures 16 to 23, the molding 300 is modified in which the groove portion 12 of the first embodiment is replaced with a groove portion 302. Accordingly, the molding 300 comprises a main body 310 which differs in the shape of the groove portion 302 from the main body 10, and a coating layer 320 which differs in the shape of the groove portion 302 from the coating layer 20. The other configurations of the molding 300 are the same as those of the molding 1 of the first embodiment. The groove portion 302 is a decorative recess that is recessed in a substantially V-shape from the front surface 20f of the molding toward the back surface 20b of the molding. The groove portion 302 extends in the longitudinal direction (X direction) of the molding 1. The groove portion 302 has a first surface 303 and a second surface 304.

[0085] The first surface 303 is formed as an inclined surface with an upward slope, moving from the front surface 20f of the molding 20b to the back surface 20b of the molding as it moves from the bottom surface 20a of the molding 300 towards the top surface 20t of the molding 300. The lower end of the first surface 303 is connected to the upper end of the fourth surface 19. The second surface 304 is formed as an inclined surface with an upward slope, moving from the back surface 20b of the molding 20f to the front surface 20f of the molding as it moves from the bottom surface 20a of the molding 300 towards the top surface 20t of the molding 300. The end of the second surface 304 on the front surface 20f of the molding is connected to the lower end of the third surface 18. The second surface 304 is connected to the end of the first surface 303 on the back surface 20b of the molding at the bottom of the groove 302 which is formed in a roughly V shape. The second surface 304 does not have to have such an upward slope; it is sufficient if it extends from the upper side of the first surface 303 toward the front surface 20f of the molding. Therefore, the groove 302 comprises a first surface 303 which is an inclined surface that extends from the front surface 20f of the molding to the back surface 20b of the molding as it moves from the bottom to the top, and a second surface 304 which is located above the first surface 303 and extends from the back surface 20b of the molding to the front surface 20f of the molding.

[0086] In the molding 300, the thickness of the coating layer 320 is preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less, for the same reasons as the coating layer 20 in the first embodiment. Here, the thickness of the coating layer 320 may be uniformly uniform, but it is preferable that it has a variable thickness with different thicknesses in parts. The thickness of the coating layer 320 is more preferably greater (thicker) in the part constituting the first surface 303 than in the part constituting the third surface 18. The thickness of the coating layer 320 is even more preferably greater in the part constituting the first surface 303 than in the part constituting the third surface 18 by a range of 1.5 times or more and 3 times or less.

[0087] In the second embodiment, the thickness of the coating layer 320 of the molding 300 is, for example, such that the thickness of the portion constituting the first surface 303, the thickness of the portion constituting the second surface 304, and the thickness of the portion constituting the fourth surface 19 are approximately equal.

[0088] Furthermore, the thickness of the coating layer 320 is approximately the same for the portion constituting the third surface 18, the portion constituting the first top surface 20t1, the portion constituting the second top surface 20t2, the portion constituting the molding bottom surface 20a, the portion constituting the upper part 20b1 of the molding back surface 20b, and the portion constituting the lower part 20b2 of the molding back surface 20b. These thicknesses are smaller than the thickness of the portion constituting the first surface 303, the portion constituting the second surface 304, and the portion constituting the fourth surface 19. Note that the thickness of the coating layer 320 is not limited to this example and can be of various thicknesses, but it is preferable that the thickness of the first surface 303 be greater (thicker) than the thickness of the third surface 18.

[0089] In the groove 302, the angle θ3 between the first surface 303 and the second surface 304 is set to 45° or more and 160° or less, similar to the groove 12 in the first embodiment. Hereinafter, the angle θ3 between the first surface 303 and the second surface 304 may be referred to as the "angle θ3 of the groove 302". The reason for setting the angle θ3 of the groove 302 to 45° or more and 160° or less is as follows: That is, various patterns such as 7 mm and 4 mm are used for the pin nails 30 driven in by the nailer head 31 (see Figure 24). If the pin nail 30 has a head, the diameter of the head may be 3 mm or less, and is not particularly limited to 5 mm or less, 10 mm or less, etc. A smaller diameter head is less conspicuous and has better aesthetic appeal. The length of the pin nail 30 may be 10 mm or more, and is not particularly limited to 20 mm or more, 30 mm or more, 40 mm or more, etc. Various types of nailer heads 31 are used to correspond to the patterns of each pin nail 30. Therefore, the angle θ3 of the groove portion 302 is set to 45° or more and 160° or less. Furthermore, it is more preferable that the angle θ3 of the groove portion 302 be 90° or more and 120° or less.

[0090] Furthermore, the width Wi2 of the groove 302 was set to 3 mm or more and 10 mm or less, more preferably 4 mm or more and 5 mm or less, similar to the groove 12 in the first embodiment. The depth De2 of the groove 12 was also set to 3 mm or more and 10 mm or less, more preferably 4 mm or more and 5 mm or less, similar to the groove 12 in the first embodiment. In this way, the angle θ3, width Wi2, and depth De2 of the groove 302 were set. As a result, the groove 302 can accept various types of nailer heads 31 (see Figure 24) corresponding to the patterns of each pin nail 30.

[0091] Furthermore, the first surface 303 is the surface that the tip 31a (see Figure 24) of the nailer head 31 contacts. The inclination angle θ4 of the first surface 303 is 20° or more and 45° or less, similar to the first surface 13 in the first embodiment. The inclination angle θ4 of the first surface 303 is the angle at which the first surface 303 is with respect to the molding front surface 20f. Therefore, by bringing the tip 31a of the nailer head 31 into contact with the first surface 13, the nailer head 31 can be inclined with respect to the molding front surface 20f. This allows the nailer head 31 to drive in the pin nail 30 at an angle with respect to the first surface 13 of the molding front surface 20f.

[0092] Multiple pin nails 30 are driven into the first surface 303 of the groove 302 at intervals in the longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the first surface 303. Therefore, the pin nails 30 are driven from the first surface 303 into the molding 300, the wall W, and the first back joist Bj1 at an inclination angle of 40° or more and 80° or less with respect to the molding front surface 20f.

[0093] Here, the molding winding body, molding system, and building of the second embodiment are configured in the same way as the molding winding body 100, molding system 400, and building 200 of the first embodiment. Furthermore, the method for installing the molding 300 in the second embodiment is the same as the method for installing the molding 1 in the first embodiment.

[0094] According to the molding 300, molding winding body, molding system, building, and method of constructing the molding 300 as described above in the second embodiment, the same functions and effects as those of the molding 1, molding winding body 100, molding system 400, building 200, and method of constructing the molding 1 of the first embodiment can be obtained.

[0095] Next, the third embodiment will be described mainly with reference to Figure 25. In the third embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0096] (Third Embodiment) As shown in Figure 25, the molding 500 according to the third embodiment has grooves 512 that have a different shape from grooves 12, instead of grooves 12. Accordingly, the molding 500 has a main body 510 that has a different shape in the position of grooves 512 from the main body 10, and a coating layer 520 that has a different shape in the position of grooves 512 from the coating layer 20.

[0097] The groove 512 has a first surface 513 instead of the first surface 13. The first surface 513 is formed as an inclined surface with an upward slope from the molding front 20f side to the molding back 20b side as it moves from the bottom to the top. The first surface 513 is a curved surface and protrudes outward from the molding 500 in a curved shape. The lower end of the first surface 513 is connected to the upper end of the second curved portion 16.

[0098] The groove 512 has a flat portion 515 and a curved portion 516 at the bottom of the groove, instead of the first curved portion 15. The flat portion 515 is a flat surface that extends perpendicular to the Y direction, which is the thickness direction of the molding 500. The lower end of the flat portion 515 is connected to the upper end of the first surface 513. The curved portion 516 is a curved surface and is formed in a concave curve toward the inside of the molding 500. The lower end of the curved portion 516 is connected to the upper end of the flat portion 515.

[0099] The groove 512 has a second surface 514 instead of the second surface 14. The second surface 514 is planar and extends perpendicular to the Z direction. The second surface 514 is located above the first surface 513 and extends from the molding back surface 20b side toward the molding front surface 20f side. The end of the second surface 514 on the molding back surface 20b side is connected to the end of the molding front surface 20f side of the curved portion 516. The end of the second surface 514 on the molding front surface 20f side is connected to the end of the molding back surface 20b side of the third curved portion 17. When driving in a pin nail 30, the nailer head 31 is brought into contact with the first surface 513, which is the target of the nail, and at that time it comes into contact with the third curved portion 17 to position it vertically relative to the molding 500.

[0100] The combined height h in the Z direction of the planar portion 515 and the curved portion 516 is 1 mm or more and less than 3 mm, more preferably 1.5 mm. In other words, the vertical distance h between the first surface 513 and the second surface 514 is 1 mm or more and less than 3 mm, more preferably 1.5 mm. The groove portion 512 includes a first surface 513 which is an inclined surface that extends from the molding front surface 20f to the molding back surface 20b as it goes from the bottom to the top, and a second surface 514 which is located above the first surface 513 and extends from the molding back surface 20b to the molding front surface 20f.

[0101] In the molding 500 as well, the thickness of the coating layer 520 is preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less, for the same reasons as the coating layer 20 in the first embodiment. Here, the thickness of the coating layer 520 may be uniformly uniform, but it is preferable that it has a variable thickness with different thicknesses in parts. The thickness of the coating layer 520 is more preferably greater (thicker) in the part constituting the first surface 513 than in the part constituting the third surface 18. The thickness of the coating layer 520 is even more preferably greater in the part constituting the first surface 513 than in the part constituting the third surface 18 by a range of 1.5 times or more and 3 times or less.

[0102] In the third embodiment, the thickness of the coating layer 520 of the molding 500 is, for example, such that the thickness of the portion constituting the first surface 513, the thickness of the portion constituting the planar portion 515, the thickness of the portion constituting the second curved portion 16, and the thickness of the portion constituting the fourth surface 19 are approximately equal.

[0103] Furthermore, the thickness of the coating layer 520 is approximately the same for the portion constituting the second surface 514, the portion constituting the third curved portion 17, the portion constituting the third surface 18, the portion constituting the first top surface 20t1, the portion constituting the second top surface 20t2, the portion constituting the molding bottom surface 20a, the portion constituting the upper part 20b1 of the molding back surface 20b, and the portion constituting the lower part 20b2 of the molding back surface 20b. These thicknesses are smaller than the thickness of the portion constituting the first surface 513, the portion constituting the planar portion 515, the portion constituting the second curved portion 16, and the portion constituting the fourth surface 19. Note that the thickness of the coating layer 520 is not limited to this example and can be of various thicknesses, but it is preferable that the thickness of the first surface 513 be greater (thicker) than the thickness of the third surface 18.

[0104] In the groove 512, the angle θ1 between the first surface 513 and the second surface 514, which is the angle θ1 between the surface tangent to the central position of the first surface 513 in a side view of the molding 500 from the longitudinal direction and the second surface 514, is set to 45° or more and 160° or less, for the same reasons as the groove 12 in the first embodiment. In this case as well, it is more preferable that the angle θ1 of the groove 512 be 90° or more and 120° or less.

[0105] Furthermore, the width Wi1 of the groove 512 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment. The depth De1 of the groove 512 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment.

[0106] Furthermore, the inclination angle θ2 of the first surface 513, which is the surface that the tip 31a (see Figure 12) of the nailer head 31 contacts, was set to 20° or more and 45° or less, for the same reasons as the first surface 13 in the first embodiment.

[0107] Multiple pin nails 30 are driven into the first surface 513 of the groove 512 at intervals along its longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the surface tangent to the driving position on the first surface 513. Therefore, the pin nails 30 are driven from the first surface 513 into the molding 500, the wall W, and the first back joist Bj1 at an inclination angle of 40° or more and 80° or less with respect to the molding front surface 20f.

[0108] Here, the molding winding body, molding system, and building of the third embodiment are configured in the same way as the molding winding body 100, molding system 400, and building 200 of the first embodiment. Furthermore, the method for installing the molding 500 in the third embodiment is the same as the method for installing the molding 1 in the first embodiment.

[0109] According to the molding 500, molding winding body, molding system, building, and method for constructing the molding 500 as described above in the third embodiment, the same functions and effects as those of the molding 1, molding winding body 100, molding system 400, building 200, and method for constructing the molding 1 of the first embodiment can be obtained.

[0110] Furthermore, according to the molding 500, molding winding body, molding system, building, and method for constructing the molding 500 according to the third embodiment, since the molding 500 has a planar portion 515 between the first surface 513 and the second surface 514, it can accommodate various types of nailer heads 31.

[0111] Next, the fourth embodiment will be described mainly with reference to Figure 26. In the fourth embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0112] (Fourth Embodiment) As shown in Figure 26, the molding 600 according to the fourth embodiment has grooves 612 that have a different shape from grooves 12, instead of grooves 12. Accordingly, the molding 600 has a main body 610 that has a different shape in the position of grooves 612 from the main body 10, and a coating layer 620 that has a different shape in the position of grooves 612 from the coating layer 20.

[0113] The groove 612 has a first surface 613 instead of the first surface 13. The first surface 613 is formed as an inclined surface with an upward slope from the molding front 20f side to the molding back 20b side as it moves from the bottom to the top. The first surface 613 is a curved surface and protrudes outward from the molding 600 in a curved shape. The lower end of the first surface 613 is connected to the upper end of the second curved portion 16.

[0114] The groove 612 has a flat section 615 and a curved section 616 at the bottom of the groove, instead of the first curved section 15. The flat section 615 is flat and has an inclined surface that slopes from the back surface 20b of the molding to the front surface 20f of the molding as it extends from the bottom to the top. The lower end of the flat section 615 is connected to the upper end of the first surface 613. Because the flat section 615 has an inclined surface that slopes from the back surface 20b of the molding to the front surface 20f of the molding as it extends from the bottom to the top, the upper end of the first surface 613 can be positioned on the back surface 20b of the molding. The curved section 616 is a curved surface and has a concave curve that curves inward toward the inside of the molding 600. The lower end of the curved section 616 is connected to the upper end of the flat section 615.

[0115] The groove 612 has a second surface 614 instead of the second surface 14. The second surface 614 is planar and extends perpendicular to the Z direction. The second surface 614 is located above the first surface 613 and extends from the back surface 20b of the molding toward the front surface 20f of the molding. The end of the second surface 614 on the back surface 20b of the molding is connected to the end of the curved portion 616 toward the front surface 20f of the molding. The end of the second surface 614 toward the front surface 20f of the molding is connected to the end of the third curved portion 17 toward the back surface 20b of the molding. When driving in a pin nail 30, the nailer head 31 is brought into contact with the first surface 613, which is the target of the nail, and at that time it comes into contact with the third curved portion 17 to position it vertically relative to the molding 600.

[0116] The combined height h in the Z direction of the planar portion 615 and the curved portion 616 is 1 mm or more and less than 3 mm, more preferably 1.5 mm. In other words, the vertical distance h between the first surface 613 and the second surface 614 is 1 mm or more and less than 3 mm, more preferably 1.5 mm. The groove portion 612 includes a first surface 613 which is an inclined surface that extends from the molding front surface 20f to the molding back surface 20b as it goes from the bottom to the top, and a second surface 614 which is located above the first surface 613 and extends from the molding back surface 20b to the molding front surface 20f.

[0117] In the molding 600 as well, the thickness of the coating layer 620 is preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less, for the same reasons as the coating layer 20 in the first embodiment. Here, the thickness of the coating layer 620 may be uniformly uniform, but it is preferable that it has a variable thickness with different thicknesses in parts. The thickness of the coating layer 620 is more preferably greater (thicker) in the part constituting the first surface 613 than in the part constituting the third surface 18. The thickness of the coating layer 620 is even more preferably greater in the part constituting the first surface 613 than in the part constituting the third surface 18 by a range of 1.5 times or more and 3 times or less.

[0118] In the fourth embodiment, the thickness of the coating layer 620 of the molding 600 is, for example, such that the thickness of the portion constituting the first surface 613, the thickness of the portion constituting the planar portion 615, the thickness of the portion constituting the second curved portion 16, and the thickness of the portion constituting the fourth surface 19 are approximately equal.

[0119] Furthermore, the thickness of the coating layer 620 is approximately the same for the portion constituting the second surface 614, the portion constituting the third curved portion 17, the portion constituting the third surface 18, the portion constituting the first top surface 20t1, the portion constituting the second top surface 20t2, the portion constituting the molding bottom surface 20a, the portion constituting the upper part 20b1 of the molding back surface 20b, and the portion constituting the lower part 20b2 of the molding back surface 20b. These thicknesses are smaller than the thickness of the portion constituting the first surface 613, the portion constituting the planar portion 615, the portion constituting the second curved portion 16, and the portion constituting the fourth surface 19. Note that the thickness of the coating layer 620 is not limited to this example and can be of various thicknesses, but it is preferable that the thickness of the first surface 613 be greater (thicker) than the thickness of the third surface 18.

[0120] In the groove 612, the angle θ1 between the first surface 613 and the second surface 614, which is the angle θ1 between the surface tangent to the central position of the first surface 613 in a side view of the molding 600 from the longitudinal direction and the second surface 614, is set to 45° or more and 160° or less, for the same reasons as the groove 12 in the first embodiment. In this case as well, it is more preferable that the angle θ1 of the groove 612 be 90° or more and 120° or less.

[0121] Furthermore, the width Wi1 of the groove 612 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment. The depth De1 of the groove 612 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment.

[0122] Furthermore, the inclination angle θ2 of the first surface 613, which is the surface that the tip 31a of the nailer head 31 (see Figure 12) contacts, was set to 20° or more and 45° or less, for the same reasons as the first surface 13 in the first embodiment.

[0123] Multiple pin nails 30 are driven into the first surface 613 of the groove 612 at intervals along its longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the surface tangent to the driving position on the first surface 613. Therefore, the pin nails 30 are driven from the first surface 613 into the molding 600, the wall W, and the first back joist Bj1 at an inclination angle of 40° or more and 80° or less with respect to the molding front surface 20f.

[0124] Here, the molding winding body, molding system, and building of the fourth embodiment are configured in the same way as the molding winding body 100, molding system 400, and building 200 of the first embodiment. Furthermore, the method for installing the molding 600 in the fourth embodiment is the same as the method for installing the molding 1 in the first embodiment.

[0125] According to the molding 600, molding winding body, molding system, building, and method of constructing the molding 600 as described above in the fourth embodiment, the same functions and effects as those of the molding 1, molding winding body 100, molding system 400, building 200, and method of constructing the molding 1 of the first embodiment can be obtained.

[0126] Furthermore, according to the molding 600, molding winding body, molding system, building, and method for installing the molding 600 according to the fourth embodiment, the molding 600 has a planar portion 615 between the first surface 613 and the second surface 614, and the planar portion 615 is formed as an inclined surface that moves from the molding back surface 20b side to the molding front surface 20f side as it moves from the bottom to the top. As a result, the upper end of the first surface 613 can be positioned on the molding back surface 20b side. Therefore, it can accommodate various types of nailer heads 31.

[0127] Next, the fifth embodiment will be described mainly with reference to Figure 27. In the fifth embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0128] (Fifth Embodiment) As shown in Figure 27, the molding 700 according to the fifth embodiment has grooves 712 that have a different shape from grooves 12 instead of grooves 12. Accordingly, the molding 700 has a main body 710 that has a different shape in the position of grooves 712 from the main body 10, and a coating layer 720 that has a different shape in the position of grooves 712 from the coating layer 20.

[0129] The groove 712 has a first surface 713 instead of the first surface 13. The first surface 713 is formed as an inclined surface with an upward slope from the molding front 20f side to the molding back 20b side as it moves from the bottom to the top. The first surface 713 is a curved surface and protrudes outward from the molding 700 in a curved shape. The lower end of the first surface 713 is connected to the upper end of the second curved portion 16.

[0130] The groove 712 has a flat section 715, a curved section 716, and a flat section 717 at the bottom of the groove, instead of the first curved section 15. The flat section 715 is flat and extends perpendicular to the Y direction. The curved section 716 is a curved surface and is formed in a concave curve toward the inside of the molding 700. The lower end of the curved section 716 is connected to the upper end of the flat section 715. The flat section 717 is flat and extends perpendicular to the Z direction. The end of the flat section 717 on the molding back surface 20b side is connected to the lower end of the flat section 715, and the end of the flat section 717 on the molding front surface 20f side is connected to the upper end of the first surface 713. The formation of the flat section 717 causes the flat section 715 to be offset toward the molding back surface 20b side relative to the upper end of the first surface 713.

[0131] The groove 712 has a second surface 714 instead of the second surface 14. The second surface 714 is planar and extends perpendicular to the Z direction. The second surface 714 is located above the first surface 713 and extends from the molding back surface 20b side toward the molding front surface 20f side. The end of the second surface 714 on the molding back surface 20b side is connected to the end of the molding front surface 20f side of the curved portion 716. The end of the second surface 714 on the molding front surface 20f side is connected to the end of the molding back surface 20b side of the third curved portion 17. When driving in a pin nail 30, the nailer head 31 is brought into contact with the first surface 713, which is the target of the nail, and at that time it comes into contact with the third curved portion 17 to position it vertically relative to the molding 700.

[0132] The combined height h in the Z direction of the planar portion 715 and the curved portion 716 is 1 mm or more and less than 3 mm, more preferably 1.5 mm. In other words, the vertical distance h between the first surface 713 and the second surface 714, or in other words, the vertical distance h between the planar portion 717 and the second surface 714, is 1 mm or more and less than 3 mm, more preferably 1.5 mm. The groove portion 712 includes a first surface 713 which is an inclined surface that extends from the molding front surface 20f to the molding back surface 20b as it goes from the bottom to the top, and a second surface 714 which is located above the first surface 713 and extends from the molding back surface 20b to the molding front surface 20f.

[0133] In the molding 700 as well, the thickness of the coating layer 720 is preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less, for the same reasons as the coating layer 20 in the first embodiment. Here, the thickness of the coating layer 720 may be uniformly uniform, but it is preferable that it has a variable thickness with different thicknesses in parts. The thickness of the coating layer 720 is more preferably greater (thicker) in the part constituting the first surface 713 than in the part constituting the third surface 18. The thickness of the coating layer 720 is even more preferably greater in the part constituting the first surface 713 than in the part constituting the third surface 18 by a range of 1.5 times or more and 3 times or less.

[0134] In the fifth embodiment, the thickness of the coating layer 720 of the molding 700 is, for example, such that the thickness of the portion constituting the first surface 713, the thickness of the portion constituting the planar portion 715, the thickness of the portion constituting the second curved portion 16, and the thickness of the portion constituting the fourth surface 19 are approximately equal.

[0135] Furthermore, the thickness of the coating layer 720 is approximately the same for the portion constituting the second surface 714, the portion constituting the third curved portion 17, the portion constituting the third surface 18, the portion constituting the first top surface 20t1, the portion constituting the second top surface 20t2, the portion constituting the molding bottom surface 20a, the portion constituting the upper part 20b1 of the molding back surface 20b, and the portion constituting the lower part 20b2 of the molding back surface 20b. These thicknesses are smaller than the thickness of the portion constituting the first surface 713, the portion constituting the planar portion 715, the portion constituting the second curved portion 16, and the portion constituting the fourth surface 19. Note that the thickness of the coating layer 720 is not limited to this example and can be of various thicknesses, but it is preferable that the thickness of the first surface 713 be greater (thicker) than the thickness of the third surface 18.

[0136] In the groove 712, the angle θ1 between the first surface 713 and the second surface 714, which is the angle θ1 between the surface tangent to the central position of the first surface 713 in a side view of the molding 700 from the longitudinal direction and the second surface 714, is set to 45° or more and 160° or less, for the same reasons as the groove 12 in the first embodiment. In this case as well, it is more preferable that the angle θ1 of the groove 712 be 90° or more and 120° or less.

[0137] Furthermore, the width Wi1 of the groove 712 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment. The depth De1 of the groove 712 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment.

[0138] Furthermore, the inclination angle θ2 of the first surface 713, which is the surface that the tip 31a (see Figure 12) of the nailer head 31 contacts, was set to 20° or more and 45° or less, for the same reasons as the first surface 13 in the first embodiment.

[0139] Multiple pin nails 30 are driven into the first surface 713 of the groove 712 at intervals along its longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the surface tangent to the driving position on the first surface 713. Therefore, the pin nails 30 are driven from the first surface 713 into the molding 700, the wall W, and the first back joist Bj1 at an inclination angle of 40° or more and 80° or less with respect to the molding front surface 20f.

[0140] Here, the molding winding body, molding system, and building of the fifth embodiment are configured in the same way as the molding winding body 100, molding system 400, and building 200 of the first embodiment. Furthermore, the method for installing the molding 700 in the fifth embodiment is the same as the method for installing the molding 1 in the first embodiment.

[0141] According to the molding 700, molding winding body, molding system, building, and method of constructing the molding 700 as described above in the fifth embodiment, the same functions and effects as those of the molding 1, molding winding body 100, molding system 400, building 200, and method of constructing the molding 1 of the first embodiment can be obtained.

[0142] Furthermore, according to the molding 700, molding winding body, molding system, building, and method for constructing the molding 700 according to the fifth embodiment, the molding 700 has a planar portion 715 between the first surface 713 and the second surface 714, and the planar portion 715 is offset from the first surface 713 toward the molding back surface 20b, so it can accommodate various types of nailer heads 31.

[0143] Next, the sixth embodiment will be described mainly with reference to Figures 28 and 29. In the sixth embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and detailed explanations are omitted.

[0144] (Sixth Embodiment) As shown in Figures 28 and 29, the molding 800 according to the sixth embodiment has a groove 812 that has a different shape from the groove 12, instead of the groove 12. Accordingly, the molding 800 has a main body 810 that has a different shape in the position of the groove 812 from the main body 10, and a coating layer 820 that has a different shape in the position of the groove 812 from the coating layer 20.

[0145] The groove 812 has a first surface 813 instead of the first surface 13. The first surface 813 is formed as an inclined surface with an upward slope from the molding front 20f side to the molding back 20b side as it moves from the bottom to the top. The first surface 813 is a curved surface and protrudes outward from the molding 800 in a curved shape. The lower end of the first surface 813 is connected to the upper end of the second curved portion 16.

[0146] The groove 812 has a flat section 815 and a curved section 816 at the bottom of the groove, instead of the first curved section 15. The flat section 815 is flat and extends perpendicular to the Y direction. The lower end of the flat section 815 is connected to the upper end of the first surface 813. The curved section 816 is a curved surface and is formed in a concave curve toward the inside of the molding 800. The lower end of the curved section 816 is connected to the upper end of the flat section 815.

[0147] The groove 812 has a second surface 814 in place of the second surface 14. The second surface 814 is a curved surface and protrudes outward from the molding 800 in a curved shape. The second surface 814 is located above the first surface 813 and extends from the back surface 20b of the molding toward the front surface 20f of the molding. The end of the second surface 814 on the back surface 20b of the molding is connected to the end of the curved portion 816 toward the front surface 20f of the molding. The end of the second surface 814 toward the front surface 20f of the molding is connected to the end of the third curved portion 17 toward the back surface 20b of the molding.

[0148] The groove 812 includes a first surface 813 which is an inclined surface that extends from the front surface 20f of the molding to the back surface 20b of the molding as it moves from the bottom to the top, and a second surface 814 which is located above the first surface 813 and extends from the back surface 20b of the molding to the front surface 20f of the molding. When the nailer head 31 drives in the pin nail 30, it comes into contact with the first surface 813, which is the target of the nail, and at that time it comes into contact with the third curved portion 17 to position it vertically relative to the molding 1.

[0149] In the molding 800 as well, the thickness of the coating layer 820 is preferably 0.3 mm or more, and more preferably 0.5 mm or more and 2.5 mm or less, for the same reasons as the coating layer 20 in the first embodiment. Here, the thickness of the coating layer 820 may be uniformly uniform, but it is preferable that it has a variable thickness with different thicknesses in parts. The thickness of the coating layer 820 is more preferably greater (thicker) in the part constituting the first surface 813 than in the part constituting the third surface 18. The thickness of the coating layer 820 is even more preferably greater in the part constituting the first surface 813 than in the part constituting the third surface 18 by a range of 1.5 times or more and 3 times or less.

[0150] In the sixth embodiment, the thickness of the coating layer 820 of the molding 800 is, for example, such that the thickness of the portion constituting the first surface 813, the thickness of the portion constituting the planar portion 815, the thickness of the portion constituting the second curved portion 16, and the thickness of the portion constituting the fourth surface 19 are approximately equal.

[0151] Furthermore, the thickness of the coating layer 820 is approximately the same for the portion constituting the second surface 814, the portion constituting the third curved portion 17, the portion constituting the third surface 18, the portion constituting the first top surface 20t1, the portion constituting the second top surface 20t2, the portion constituting the molding bottom surface 20a, the portion constituting the upper part 20b1 of the molding back surface 20b, and the portion constituting the lower part 20b2 of the molding back surface 20b. These thicknesses are smaller than the thickness of the portion constituting the first surface 813, the portion constituting the planar portion 815, the portion constituting the second curved portion 16, and the portion constituting the fourth surface 19. Note that the thickness of the coating layer 820 is not limited to this example and can be of various thicknesses, but it is preferable that the thickness of the first surface 813 be greater (thicker) than the thickness of the third surface 18.

[0152] In the groove 812, the angle θ1 between the first surface 813 and the second surface 814, which is the angle θ1 between the surface tangent to the central position of the first surface 813 in a side view of the molding 800 viewed from the longitudinal direction and the surface tangent to the central position of the second surface 814 in a side view of the molding 800 viewed from the longitudinal direction, is set to 45° or more and 160° or less, for the same reasons as the groove 12 in the first embodiment. In this case as well, it is more preferable that the angle θ1 of the groove 812 be 90° or more and 120° or less.

[0153] Furthermore, the width Wi1 of the groove 812 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment. The depth De1 of the groove 812 was set to 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 5 mm or less, similar to the groove 12 of the first embodiment.

[0154] Furthermore, the inclination angle θ2 of the first surface 813, which is the surface that the tip 31a of the nailer head 31 (see Figure 12) contacts, was set to 20° or more and 45° or less, for the same reasons as the first surface 13 in the first embodiment.

[0155] Multiple pin nails 30 are driven into the first surface 813 of the groove 812 at intervals along its longitudinal direction. The pin nails 30 are driven in, for example, at an angle perpendicular to the surface tangent to the driving position on the first surface 813. Therefore, the pin nails 30 are driven from the first surface 813 into the molding 800, the wall W, and the first back joist Bj1 at an inclination angle of 40° or more and 80° or less with respect to the molding front surface 20f.

[0156] Here, the molding winding body, molding system, and building of the sixth embodiment are configured in the same way as the molding winding body 100, molding system 400, and building 200 of the first embodiment. Furthermore, the method for installing the molding 800 in the sixth embodiment is the same as the method for installing the molding 1 in the first embodiment.

[0157] According to the molding 800, molding winding body, molding system, building, and method for constructing the molding 800 as described above in the sixth embodiment, the same functions and effects as those of the molding 1, molding winding body 100, molding system 400, building 200, and method for constructing the molding 1 of the first embodiment can be obtained.

[0158] Furthermore, according to the molding 800, molding winding body, molding system, building, and method for constructing the molding 800 according to the eighth embodiment, since the molding 800 has a planar portion 815 between the first surface 813 and the second surface 814, it can accommodate various types of nailer heads 31.

[0159] The technical scope of this disclosure is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of this disclosure.

[0160] For example, the recess 22 may be omitted. Also, for example, the moldings 1, 300, 500, 600, 700, and 800 may have a hollow structure. In addition, various materials other than those mentioned above can be used as the material constituting the moldings 1,300, 500, 600, 700, and 800, such as PVC (polyvinyl chloride) resin, TPO (olefin-based thermoplastic elastomer) resin, ABS (acrylonitrile, butadiene, styrene) resin, and TPE (thermoplastic elastomer) resin. Furthermore, for example, the moldings 1,300, 500, 600, 700, and 800 can be manufactured by various methods other than co-extrusion, such as injection molding and extrusion. Also, for example, in addition to using pin nails 30, various fixing methods can be used to fix the moldings 1,300, 500, 600, 700, and 800 to the wall W, such as fixing with double-sided tape, fixing with screws, and fitting fixation.

[0161] Furthermore, it is possible to replace the components in this embodiment with well-known components as appropriate, without departing from the spirit of this disclosure.

[0162] (Note) The above embodiment can be understood, for example, as follows.

[0163] <1> A molding according to one aspect of the present disclosure comprises a body made of foamed resin and a coating layer made of non-foamed resin provided on the outer surface of the body. A groove is provided on the front surface of the molding, extending in the longitudinal direction of the molding. The groove comprises a first surface that extends from the front side to the back side of the molding as it moves from one side to the other in a direction that intersects the longitudinal direction and the thickness direction of the molding, and a second surface located on the other side of the first surface, extending from the back side to the front side. The molding has a third surface located on the other side of the second surface, extending from one side to the other. The thickness of the coating layer is greater on the first surface than on the third surface.

[0164] In this molding, the thickness of the coating layer on the first surface extending from the front to the back of the molding, as it moves from one side to the other in a direction that intersects the longitudinal direction of the molding and the thickness direction of the molding, is greater than the thickness of the coating layer on the third surface extending from one side to the other, located on the other side of the second surface which extends from the back to the front of the molding. Therefore, a pin nail can be driven into the first surface, which has a thicker coating layer, using a nailer head. This increases the frictional force applied to the pin nail from the non-foamed resin coating layer during driving, thereby preventing the pin nail from penetrating the coating layer and coming out to the foamed resin body. As a result, the molding can be easily and reliably fixed to the wall with a pin nail. Therefore, ease of installation for fixing the molding to the wall is ensured, and the functionality of fixing the molding to the wall is also ensured.

[0165] A groove is provided on the front surface of the molding. The groove has a first surface and a second surface. The first surface extends from the front side to the back side as you move from one side to the other side. The second surface is located on the other side relative to the first surface and extends from the back side to the front side. Therefore, the first surface allows the nailer head to be tilted relative to the front surface while the tip of the nailer head is in contact with it, and the second surface allows the tip of the nailer head to be received while in contact with the first surface.

[0166] <2> In the molding according to <1> above, the thickness of the coating layer on the first surface may be 1.5 times or more and 3 times or less than the thickness of the coating layer on the third surface.

[0167] In this molding, the thickness of the coating layer on the first surface is 1.5 to 3 times greater than the thickness of the coating layer on the third surface. This allows for a greater frictional force to be applied from the non-foamed resin coating layer to the pin nail during installation, thereby further preventing the pin nail from penetrating the coating layer and coming out to the foamed resin body. As a result, the molding can be easily and securely fixed to the wall with the pin nail. Therefore, ease of installation for fixing the molding to the wall is ensured, and the functionality of fixing the molding to the wall is also ensured.

[0168] <3> In the molding according to <1> or <2> above, the main body is exposed from the coating layer on part or all of the back surface of the molding, and in the part of the main body exposed from the coating layer, the arithmetic mean height Sa as defined in ISO 25178 may be 10 μm or more and 300 μm or less, and the maximum height Sz may be 100 μm or more and 2000 μm or less.

[0169] According to the molding, the arithmetic mean height Sa on the back of the molding is between 10 μm and 300 μm, and the maximum height Sz is between 100 μm and 2000 μm. This allows the molding to be firmly attached to the wall with adhesive or double-sided tape.

[0170] <4> In the molding relating to any one of <1> to <3> above, the angle between the first surface and the second surface is 45° or more and 160° or less, and the inclination angle of the first surface with respect to the front surface may be 20° or more and 45° or less.

[0171] According to the molding, various types of pin nails, such as 7mm and 4mm patterns, are used in the nailer head. If the pin nail has a head, the diameter of the head may be 3mm or less, but is not particularly limited to 5mm or less, 10mm or less, etc. Smaller head diameters are less noticeable and have better aesthetic appeal. The length of the pin nail may be 10mm or more, but is not particularly limited to 20mm or more, 30mm or more, 40mm or more, etc. Various types of nailer heads are used to correspond to each pin nail pattern. Therefore, the angle between the first and second surfaces is set to 45° or more and 160° or less. This allows the groove to accommodate various types of nailer heads corresponding to each pin nail pattern. In addition, the nailer head can be tilted relative to the front by bringing its tip into contact with the first surface. In this state, the nailer head can drive the pin nail in at an angle relative to the front (i.e., the molding).

[0172] Furthermore, on the back side of the wall, for example, back joists may be arranged at intervals in the vertical direction. Therefore, the inclination angle of the first surface relative to the front was set to 20° or more and 45° or less. In this state, by positioning the nailer head in the groove, the pin nails can be driven into the molding at a predetermined inclination angle (40° or more and 80° or less). Thus, the pin nails can be easily driven into the back joists. This ensures ease of installation for fixing the molding to the wall, and furthermore, ensures the function of fixing the molding to the wall.

[0173] Furthermore, because the pin nails are angled relative to the molding, they can be driven deeper into the molding and wall (e.g., drywall) compared to when they are not angled, thus ensuring sufficient penetration. Therefore, even if the pin nails are not driven into the back joists, the fixing force between the pin nails and the molding and wall is increased, making it easier to fix the molding to the wall.

[0174] <5> In the case of a molding relating to any one of <1> to <4> above, the thickness of the molding from the front to the back may be 3 mm or more and 15 mm or less.

[0175] According to the molding, the thickness of the molding was ensured to be between 3 mm and 15 mm to account for cases where pin nails cannot be driven into the back joists. Pin nails are driven into this molding at a predetermined angle (between 40° and 80°). Therefore, a large amount of penetration of the pin nails into the molding and the wall (e.g., gypsum board) can be ensured. As a result, even if the pin nails cannot be driven into the back joists, the molding can be securely fixed to the wall with the pin nails.

[0176] <6> In the molding relating to any one of <1> to <5> above, a recess extending in the longitudinal direction of the molding may be provided on the back surface.

[0177] With molding, when attaching the molding to a wall with adhesive, it is possible that the adhesive may seep out from between the molding and the wall. Therefore, a recess is provided on the back of the molding. This allows the adhesive between the molding and the wall to escape into the recess. As a result, the recess prevents the adhesive from seeping out from between the molding and the wall.

[0178] <7> A molding system according to one aspect of the present disclosure comprises a molding described in any one of <1> to <6> and a fitting.

[0179] In this molding system, the thickness of the coating layer on the first surface of the molding, extending from the front side to the back side as it moves from one side of the groove to the other side, is greater than the thickness of the coating layer on the third surface, which is located on the other side of the second surface and extends from the back side to the front side of the molding. Therefore, a pin nail can be driven into the first surface, which has a thicker coating layer, using a nailer head. This increases the frictional force applied to the pin nail from the non-foamed resin coating layer during driving, thus preventing the pin nail from penetrating the coating layer and coming out into the foamed resin body. As a result, the molding can be easily and reliably fixed to the wall with a pin nail. Therefore, ease of installation for fixing the molding to the wall is ensured, and the functionality of fixing the molding to the wall is also ensured.

[0180] <8> An architectural structure according to one aspect of the present disclosure includes a wall, a molding according to any one of <1> to <6> above whose back surface is in contact with the wall, and a fastener embedded in the first surface of the molding.

[0181] In this building design, the molding has a groove, and a fastener is driven into the first surface of the groove. Therefore, the fastener can be driven into the front of the molding at a predetermined angle of inclination (40° or more, and 80° or less). This allows the fastener to be easily driven into the back joist. Thus, ease of installation for fixing the molding to the wall is ensured, and furthermore, the functionality of fixing the molding to the wall is ensured.

[0182] Furthermore, because the fasteners are angled relative to the molding, they can be driven deeper into the molding and wall (e.g., drywall) compared to when they are not angled, thus ensuring sufficient penetration. Therefore, even if the fasteners are not driven into the back joists, the fixing force between the fasteners and the molding and wall is increased, making it easier to secure the molding to the wall.

[0183] <9> A molding installation method according to one aspect of the present disclosure is a molding installation method for installing the molding described in any one of <1> to <6> above, wherein the back surface of the molding is brought into contact with a wall, an installation tool is placed in the groove, and the fixing device is driven into the molding and the wall with the installation tool at a predetermined inclination angle with respect to the front surface.

[0184] According to the molding installation method, first, the molding is placed with its back in contact with the wall. Next, the installation tool is placed in the groove of the molding. Then, the fastener is driven into the molding and the wall at a predetermined angle relative to the front using the installation tool. As a result, the fastener can be easily driven into the back joist. This ensures ease of installation when fixing the molding to the wall, and furthermore, ensures the functionality of fixing the molding to the wall.

[0185] <10> A molding winding according to one aspect of the present disclosure is a molding winding obtained by winding the molding described in any one of <1> to <6> above, wherein the molding is wound with its back surface facing outward.

[0186] In the case of a molded molding, the main body is exposed on the back and the covering layer is exposed on the front. The main body is molded from foamed resin. The covering layer is molded from non-foamed resin. Foamed resin expands and contracts more than non-foamed resin. Therefore, for example, if the molding is wound with the back facing inward, the foamed resin will shrink significantly. As a result, when the molding is unwound from a wound state, a significant curl is likely to remain in the foamed resin. Consequently, when unwinding the molding from a wound state, gaps are likely to occur between the molding and the wall, impairing the ease of installation of the molding.

[0187] Therefore, in the molding winding method, the molding is wound with the back surface facing outwards. Compared to winding the molding with the back surface facing inwards, shrinkage of the foamed resin can be kept to a minimum. As a result, when the molding is unwound from the wound state, the curling of the foamed resin can be kept to a minimum. This prevents gaps from forming between the molding and the wall when unwinding the molding from the wound state. Thus, ease of installation for fixing the molding to the wall can be ensured, and furthermore, the function of fixing the molding to the wall can be ensured.

[0188] Furthermore, the molding has a groove on its front surface. The groove is formed in a roughly V-shape between the first and second surfaces. For example, if the foamed resin has a significant curl, it is necessary to straighten the curl of the foamed resin when installing the molding. When straightening the curl of the foamed resin, stress concentrates at the bottom of the groove, which may damage the molding from the groove. In contrast, by minimizing the curl of the foamed resin, the molding can be installed without damaging the molding from the bottom of the groove. This further improves the ease of installation when fixing the molding to the wall.

[0189] According to the above-described embodiments of this disclosure, it is possible to provide a molding, a molding wrap, a building, and a molding installation method that can ensure ease of installation for fixing the molding to a wall, and further ensure the function of fixing the molding to a wall.

[0190] 1, 300, 500, 600, 700, 800... Molding 10, 310, 510, 610, 710, 810... Main body 20, 320, 520, 620, 720, 820... Covering layer 20b... Back of molding (back of the molding) 20b3... Central part (part of the main body exposed from the covering layer) 20f... Front of molding (front of the molding) 12, 302, 512, 612, 712, 812... Groove 13, 303, 513, 613, 713, 813... First surface 14, 304, 514, 614, 714, 814... Second surface 22... Recess 30... Pin nail (fixing device) 31... Nailer head (installation tool) 100... Molding winding 200... Building 400...Molding system 401...Special part T1...Molding thickness W...Wall θ1, θ3...Angle of groove θ2, θ4...Inclination angle of the first surface

Claims

1. A molding comprising a body made of foamed resin and a coating layer made of non-foamed resin provided on the outer surface of the body, wherein a groove extending in the longitudinal direction of the molding is provided on the front surface of the molding, the groove comprises a first surface extending from the front side to the back side of the molding as it moves from one side to the other in a direction intersecting the longitudinal direction and intersecting the thickness direction of the molding, and a second surface located on the other side of the first surface and extending from the back side to the front side, the molding has a third surface located on the other side of the second surface and extending from one side to the other side, and the thickness of the coating layer is greater on the first surface than on the third surface.

2. The molding according to claim 1, wherein the thickness of the coating layer on the first surface is 1.5 times or more and 3 times or less than the thickness of the coating layer on the third surface.

3. The molding according to claim 1, wherein the main body is exposed from the coating layer on part or all of the back surface of the molding, and in the portion of the main body exposed from the coating layer, the arithmetic mean height Sa as defined in ISO 25178 is 10 μm or more and 300 μm or less, and the maximum height Sz is 100 μm or more and 2000 μm or less.

4. The molding according to claim 1, wherein the angle between the first surface and the second surface is 45° or more and 160° or less, and the inclination angle of the first surface with respect to the front surface is 20° or more and 45° or less.

5. A molding winding body comprising a molding according to claim 1 or 2, wherein the molding is wound with its back surface facing outward.

6. A molding system comprising the molding described in claim 1 or 2 and a fitting.

7. A building comprising a wall, a molding according to claim 1 or 2 having its back surface in contact with the wall, and a fastener driven into the first surface of the molding.

8. A method for installing molding according to claim 1 or 2, comprising: bringing the back surface of the molding into contact with a wall; placing an installation tool in the groove; and using the installation tool to drive a fastener into the molding and the wall at a predetermined inclination angle with respect to the front surface.

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