JP2017110468A - Structural body for bath room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structural body for bath room capable of maintaining its antifouling function for a long time.SOLUTION: A structural body for bath room 1 includes: a resin base material 10; a film base material 20 supported by the resin base material 10; and a resin layer 30 which is supported by the film base material 20 and contains fine particles of 10-30 nm in diameter. The resin layer 30 has a roughness structure 31 with distance in the roughness of 300-10 μm, and the area ratio of a convex 33 being 0.5 or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bathroom structure used in a bathroom.

  Conventionally, there has been known a composite material that can easily remove dirt adhering to the surface and maintain the surface in a clean state (see, for example, Patent Document 1). The composite material described in Patent Document 1 is a composite material in which a surface layer containing photocatalyst particles is formed. In the composite material, the photocatalyst particles are photoexcited to make the surface of the surface layer hydrophilic, and then the surface can be maintained in a clean state by washing the surface with alkaline water.

JP 2000-279905 A

  However, the conventional composite material requires a cleaning process using alkaline water in order to remove the attached dirt. During the cleaning process, the surface may be damaged, and the antifouling function may be impaired. For this reason, the antifouling function cannot be maintained for a long time.

  Then, an object of this invention is to provide the structure for bathrooms which can maintain an antifouling function for a long period of time.

  To achieve the above object, a bathroom structure according to one embodiment of the present invention includes a resin base material, a film base material supported by the resin base material, and fine particles having a diameter of 10 nm to 30 nm. A resin layer supported by a film substrate, and the resin layer has a first concavo-convex structure in which a concavo-convex interval is 300 nm or more and 10 μm or less, and an area ratio of convex portions is 0.5 or less.

  According to the bathroom structure according to the present invention, the antifouling function can be maintained for a long period of time.

It is sectional drawing of the structure for bathrooms which concerns on embodiment. It is the schematic which shows the use environment of the structure for bathrooms concerning embodiment. It is a top view which shows a part of structure for bathrooms concerning embodiment. It is process sectional drawing which shows the process of manufacturing a decorating sheet in the manufacturing method of the structure for bathrooms which concerns on embodiment. In the manufacturing method of the structure for bathrooms concerning an embodiment, it is a process sectional view showing the process of combining and decorating a decoration sheet and a resin base material. It is a figure which shows the relationship between the diameter of a droplet, and a contact area. It is a figure which shows the relationship between the area ratio of an unevenness | corrugation, and a contact angle.

  Below, the structure for bathrooms which concerns on embodiment of this invention is demonstrated in detail using drawing. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.

(Embodiment)
[Bathroom structure]
First, the outline of the bathroom structure according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view of a bathroom structure 1 according to the present embodiment. FIG. 2 is a schematic view showing an environment in which the bathroom structure 1 according to the present embodiment is used.

  The bathroom structure 1 is used as a member used in a bathroom. Specifically, as shown in FIG. 2, the bathroom structure 1 is used as an interior material of the floor 101 of the bathroom 100. The bathroom structure 1 is not limited to the floor 101 and may be used as an interior material for the wall 102 or the ceiling 103. Alternatively, the bathroom structure 1 may be used for the bottom 105 of the bathtub 104 or the door of the bathroom 100.

  In the present embodiment, bathroom structure 1 is a sheet-like member having a predetermined uneven structure. Specifically, as shown in FIG. 1, the bathroom structure 1 includes a resin base material 10, a film base material 20, a resin layer 30, and a surface layer 40. The resin base material 10, the film base material 20, the resin layer 30, and the surface layer 40 are laminated | stacked in this order.

  Below, each component of the structure 1 for bathrooms which concerns on this Embodiment is demonstrated in detail.

[Resin substrate]
The resin base material 10 is a member that supports the film base material 20. Specifically, the resin base material 10 is a member formed from a sheet-like resin material. In the present embodiment, as shown in FIG. 1, the resin base material 10 has an anti-slip structure 11. The anti-slip structure 11 is provided on the film base 20 side.

The anti-slip structure 11 is, for example, a structure for preventing a person or the like from slipping and falling, and is an uneven structure formed in a predetermined pattern. Specifically, the anti-slip structure 11 is an example of a second concavo-convex structure having a concavo-convex interval wider than the concavo-convex structure 31 of the resin layer 30. That is, the unevenness interval D ₁ of the anti-slip structure 11 is larger than the unevenness interval D ₂ of the uneven structure 31. As shown in FIG. 1, the anti-slip structure 11 has a concave portion 12 and a convex portion 13.

  The shape, size, interval, and the like of the concave portion 12 and the convex portion 13 are not particularly limited. In the present embodiment, as an example, the concave portion 12 is a concave portion (groove) having a lattice shape in plan view. A plurality of rectangular convex portions 13 are formed in a matrix by forming the concave portions 12 having a lattice shape in plan view. Alternatively, a plurality of columnar convex portions 13 may be arranged two-dimensionally. The shape and arrangement of the recess 12 and the protrusion 13 may be regular or irregular (random). That is, in the anti-slip structure 11, the concave portion 12 and the convex portion 13 are formed in a predetermined pattern (including a random pattern) in plan view.

  The resin base material 10 is made of, for example, fiber reinforced plastic (FRP) or SMC (Sheet Molding Compound) material containing glass fiber. Alternatively, the resin base material 10 may be an artificial marble containing acrylic or polyester as a main component. The resin base material 10 is formed by press molding using an SMC material, for example.

[Film substrate]
The film base 20 is a base supported by the resin base 10 and supports the resin layer 30. In the present embodiment, the film substrate 20 is provided along the uneven surface of the anti-slip structure 11 of the resin substrate 10. That is, the film substrate 20 is bonded to the uneven surface of the anti-slip structure 11. The film base 20 has a shape along the uneven shape of the anti-slip structure 11 of the resin base 10.

  The film base material 20 is formed from resin materials, such as a polyethylene terephthalate and a polycarbonate, for example. Although the thickness of the film base material 20 is not specifically limited, The whole intensity | strength of the structure 1 for bathrooms can be raised by making it thin.

[Resin layer]
The resin layer 30 is supported by the film substrate 20. In the present embodiment, the resin layer 30 is provided along the uneven surface of the anti-slip structure 11. That is, the resin layer 30 is bonded to the surface of the film base 20 opposite to the resin base 10. The resin layer 30 has a shape along the uneven shape of the anti-slip structure 11 of the resin base material 10.

  In the present embodiment, the resin layer 30 is formed using a photocurable resin. Specifically, the resin layer 30 is formed using an ultraviolet curable resin.

  The resin layer 30 contains fine particles having a diameter of 10 nm or more and 30 nm or less. Specifically, a plurality of fine particles are dispersed in the resin layer 30. In the present embodiment, the fine particles are smaller than the size of the convex portion 33 of the concavo-convex structure 31. For example, a plurality of fine particles are dispersed inside the convex portion 33. The diameter of the fine particles may be 20 nm or more and 30 nm or less.

  The fine particles are formed of a material having higher strength than a resin material (specifically, an ultraviolet curable resin) that is a main component of the resin layer 30. The fine particles are, for example, silica particles, but are not limited thereto. The fine particles may be, for example, inorganic particles such as titanium dioxide, or ceramic particles.

  By the resin layer 30 containing fine particles, the strength of the resin layer 30 can be increased. In the present embodiment, since a plurality of fine particles are dispersed in the convex portion 33, the strength of the convex portion 33 can be increased. That is, the convex portion 33 is resistant to external impact and is not easily broken.

  As shown in FIG. 1, the resin layer 30 has a concavo-convex structure 31. The uneven structure 31 is provided on the side opposite to the film base 20. That is, the uneven structure 31 is provided on the outer surface side of the bathroom structure 1.

  The uneven structure 31 is provided in the recess 12 of the anti-slip structure 11. In the present embodiment, the concavo-convex structure 31 is formed not only on the concave portion 12 but also on the convex portion 13. Specifically, the concavo-convex structure 31 is formed on the bottom and side surfaces of the concave portion 12 of the anti-slip structure 11 and the top surface of the convex portion 13. That is, the concavo-convex structure 31 is formed on the entire surface of the resin layer 30 opposite to the film base 20 side.

Uneven structure 31, the distance _{D 2} of the irregularities is an example of 10μm or less of the first uneven structure or 300 nm. The concavo-convex structure 31 is a fine concavo-convex structure formed by a so-called nanoimprint technique, and is a structure capable of realizing super water repellency (contact angle with water of 150 ° or more). As shown in FIG. 1, the concavo-convex structure 31 has a concave portion 32 and a convex portion 33.

  In the concavo-convex structure 31, the area ratio of the convex portion 33 is 0.5 or less. The area ratio of the convex portion 33 is a ratio of the area of the convex portion 33 to the area of the resin layer 30 in a plan view (that is, the total area of the concave portion 32 and the convex portion 33).

The height of the protrusions 33 is determined, for example, in accordance with the distance D ₂ of irregularities. For example, the wider the interval D _2, the height of the convex portion 33 becomes higher. Although the distance from the bottom face of the recessed part 32 to the film base material 20, ie, the thickness of the resin layer 30, is 20 micrometers or more and 30 micrometers or less, for example, it is not limited to this.

  In the present embodiment, the bottom surface of the concave portion 32 and the top surface of the convex portion 33 are flat (planar). Specifically, as shown in FIG. 1, the cross-sectional shapes of the concave portion 32 and the convex portion 33 are substantially rectangular. In addition, the cross-sectional view shape of the recessed part 32 and the convex part 33 is not limited to this. For example, the bottom surface of the recess 32 may be smoothly curved.

  FIG. 3 is a plan view showing a part of the bathroom structure 1 according to the present embodiment. Specifically, FIG. 3 is a plan view of the concavo-convex structure 31 of the resin layer 30 located in the concave portion 12 of the anti-slip structure 11.

In the present embodiment, a plurality of columnar convex portions 33 are arranged in a two-dimensional manner, and a concave portion 32 is provided in a region other than the plurality of convex portions 33. Specifically, the plurality of convex portions 33 are arranged in a triangle. More specifically, the plurality of convex portions 33 are arranged such that the three convex portions 33 adjacent to each other are located at the apexes of an equilateral triangle (the length of one side is D ₂ ).

で表される。なお、ｄ_１は、円柱状の凸部３３の上面の直径であり、ｄ_２は、隣り合う２つの凸部３３間の距離である。 In the example shown in FIG. 3, the area ratio of the convex portion 33, the length of one side to the area of an equilateral triangle of D _2, represented by the area of the projection 33 within the equilateral triangle. Specifically, since one cylindrical convex portion 33 exists in a rhombus (two regular triangles) having a side length of D ₂ (= d ₁ + d ₂ ), the area of the convex portion 33 The ratio is

It is represented by Here, d ₁ is the diameter of the upper surface of the cylindrical convex portion 33, and d ₂ is the distance between two adjacent convex portions 33.

  In addition, the shape, size, arrangement, and the like of the concave portion 32 and the convex portion 33 are not particularly limited as long as the area ratio of the convex portion 33 satisfies 0.5 or less. For example, the convex portion 33 may be a prismatic convex portion, or a lattice-shaped concave portion 32 may be provided. Or the recessed part 32 may be formed in the column shape. The shape and arrangement of each of the concave portion 32 and the convex portion 33 may be regular or irregular. That is, in the concavo-convex structure 31, the concave portion 32 and the convex portion 33 are formed in a predetermined pattern (including a random pattern) in plan view.

[Surface layer]
The surface layer 40 is formed of a thin film containing a low surface energy material as a main component. The low surface energy material is, for example, a material having a contact angle with water of 90 ° or more. It should be noted that “contact angle” means a contact angle with respect to water unless otherwise specified in the present embodiment.

  Specifically, the low surface energy material has a functional group containing fluorine. For example, as the low surface energy material, a fluorine-based coating agent having water repellency can be used. The thickness of the surface layer 40 is, for example, 10 nm or less.

  The surface layer 40 is a layer exposed on the outermost surface of the bathroom structure 1. That is, the surface layer 40 may come into contact with water, and dirt components such as scale may adhere.

  The surface layer 40 may be a layer formed by segregation of a low surface energy material. For example, a functional group containing fluorine may be segregated on the surface by using a fluorine-containing resin as the resin layer 30.

[Production method]
Then, the manufacturing method of the structure 1 for bathrooms which concerns on this Embodiment is demonstrated. First, the manufacturing method of the decorating sheet 2 is demonstrated using FIG. FIG. 4 is a process cross-sectional view illustrating a process of manufacturing the decorative sheet 2 in the method for manufacturing the bathroom structure 1 according to the present embodiment.

  The decorative sheet 2 is a molded sheet composed of the film base 20, the resin layer 30, and the surface layer 40 before being molded together with the resin base 10. The decorative sheet 2 is manufactured using, for example, a transfer technique using a roll-to-roll gravure printing apparatus or a nanoimprint apparatus.

  First, as shown to (a) of FIG. 4, the film base material 20 is prepared. Next, as illustrated in FIG. 4B, the ultraviolet curable resin 30 a is applied to the main surface of the film base 20 using the discharge device 90. A plurality of fine particles having a diameter of 10 nm or more and 30 nm or less may be dispersed in the ultraviolet curable resin 30a. Thereby, the resin layer 30 before hardening with a substantially uniform film thickness is formed on the film substrate 20. When the ultraviolet curable resin 30a contains a solvent component, a drying step may be performed after the film formation.

  Next, as shown in FIG. 4 (c), while rotating a cylinder (plate cylinder) 91 having irregularities of a predetermined shape along the resin layer 30 before curing, the resin layer 30 and the cylinder 91 By irradiating the resin layer 30 with ultraviolet rays (UV light) using an ultraviolet light source 92 at the portion in contact therewith, the shape is transferred to the resin layer 30 before curing. Since the concave / convex structure 31 is inverted in the cylinder 91, the concave / convex structure 31 is formed in the resin layer 30. Thereby, the resin layer 30 having the strong uneven structure 31 is formed.

  Next, as shown in FIG. 4D, a thin film containing a low surface energy material as a main component is formed as the surface layer 40 on the uneven surface of the uneven structure 31 by performing fluorine coating. As a fluorine coating method, a dip method, a spray method, a vapor deposition method, or the like is appropriately selected according to the target film quality.

  Moreover, you may put the layer which has adhesiveness with respect to SMC material 10a in the back side of the uneven | corrugated surface of the film base material 20. FIG.

  As described above, the decorative sheet 2 including the film base 20, the resin layer 30 having the concavo-convex structure 31, and the surface layer 40 is manufactured.

  Next, the process of molding the decorative sheet 2 and the resin base material 10 together will be described with reference to FIG. FIG. 5 is a process cross-sectional view showing a process of molding the decorative sheet 2 and the resin base material 10 together in the method for manufacturing the bathroom structure 1 according to the present embodiment.

  First, as shown in FIG. 5A, the decorative sheet 2 and the SMC material 10 a are placed on a mold 94. At this time, the SMC material 10a is placed on the surface of the film base 20 opposite to the resin layer 30 side. That is, the decorating sheet 2 is placed on the mold 94 so that the resin layer 30 is located on the lower side of the film substrate 20, and the SMC material 10a is placed on the placed decorating sheet 2.

  Next, as shown in FIG. 5B, the decorative sheet 2 and the SMC material 10 a are integrally molded by pressing the mold 95 against the mold 94. Concavities and convexities corresponding to the anti-slip structure 11 are formed on the mold 94, and the anti-slip structure 11 is formed on the resin base material 10. Since the decorative sheet 2 is also molded, the decorative sheet 2 (specifically, the film substrate 20 and the resin layer 30) is processed into a shape along the uneven surface of the anti-slip structure 11.

  As shown in FIG. 5C, by removing the mold 95 from the mold 94, the bathroom structure 1 is formed as shown in FIG. 5D. Although not shown in FIG. 5 (d), as shown in FIG. 1, the resin base material 10 is provided with a non-slip structure 11, and is added in accordance with the uneven shape of the anti-slip structure 11. The decorative sheet 2 is deformed.

[Advantages of water repellent function against bathroom dirt]
In the bathroom, the main cause of dirt is the adhesion of scale components (calcium) in moisture. For example, after the droplets adhering to the floor surface are dried, calcium contained in the droplets adheres in a layered manner to the portion where the droplets and the floor are in contact. At this time, the larger the contact area between the droplet and the floor, the harder it is to remove calcium adhering in layers. Furthermore, when sebum etc. adhere on the layered calcium, the sebum is difficult to remove.

  FIG. 6 is a diagram showing the relationship between the diameter of the droplet and the contact area. In FIG. 6, the horizontal axis indicates the diameter of the droplet, and the vertical axis indicates the contact area of the droplet.

  As shown in FIG. 6, the contact area increases as the diameter of the droplet increases. As described above, the larger the contact area between the droplet and the floor, the easier it is for the scale components that cause contamination to adhere, so it is required to reduce the contact area between the droplet and the floor.

  Here, as shown in FIG. 6, the larger the contact angle, the smaller the rate of increase of the contact area. That is, the higher the water repellency of the floor surface, the smaller the contact area, even if the droplets become larger, and hardly changes. That is, as the water repellency is higher, scale components and sebum are less likely to adhere, and a high antifouling function can be realized.

  For example, when the water repellency is high, the contact area between the droplets and the floor becomes small, so that calcium tends to adhere in a lump rather than a layer. For this reason, lump calcium is weak in adhesive strength with the floor, and can be easily wiped off with, for example, a sponge. Moreover, when sebum adheres to massive calcium, sebum adheres similarly to massive. For this reason, since the ratio of the exposed part with respect to the whole sebum increases, the effect of surfactant becomes high. Therefore, sebum can be easily removed.

  Here, the water repellent effect of the bathroom structure 1 according to the present embodiment will be described.

  FIG. 7 is a diagram illustrating the relationship between the area ratio of the unevenness and the contact angle. In FIG. 7, the horizontal axis indicates the area ratio of the convex portion 33, and the vertical axis indicates the contact angle with respect to water.

  As shown in FIG. 7, the smaller the area ratio of the convex portion 33, that is, the larger the area ratio of the concave portion 32, the larger the contact angle with water. Furthermore, even if the area ratio of the protrusions 33 is the same, the contact angle with water increases as the contact angle (wetting angle) of the material of the protrusions 33 (specifically, the material of the surface layer 40) increases. .

  Specifically, as shown in FIG. 7, when the contact angle of the material is 90 ° or more, the area ratio of the convex portion 33 is set to 0.5 or less, whereby the bathroom structure 1 with respect to water The contact angle is 120 ° or more. For example, when the contact angle of the material is 110 ° and the area ratio of the convex portion 33 is 0.2 or less, the bathroom structure 1 can realize so-called super water repellency (contact angle of 150 ° or more). .

  As described above, in the present embodiment, the resin layer 30 has the concavo-convex structure 31, so that the contact angle of the droplet is increased, and further, the contact of the droplet is achieved by using the low surface energy material for the surface layer 40. The corner can be further increased. That is, the water repellent effect can be enhanced by a combination of the concavo-convex structure 31 and the material of the surface layer 40.

[Effects, etc.]
As described above, the bathroom structure 1 according to the present embodiment includes a resin base material 10, a film base material 20 supported by the resin base material 10, and a fine particle having a diameter of 10 nm to 30 nm. The resin layer 30 is supported by the base material 20, and the resin layer 30 has a concavo-convex structure 31 in which the concavo-convex interval is 300 nm or more and 10 μm or less and the area ratio of the protrusions 33 is 0.5 or less.

  Thus, since the uneven | corrugated space | interval is as narrow as 300 nm or more and 10 micrometers or less, and the area ratio of the convex part 33 is 0.5 or less, the contact angle with respect to the water in the surface of the uneven structure 31 can be enlarged. Therefore, since the bathroom structure 1 has high water repellency, the contact area of the droplets becomes small, and dirt is less likely to adhere. Moreover, since the resin layer 30 contains fine particles, the strength of the concavo-convex structure 31 can be increased. Therefore, since the uneven structure 31 has high strength, the uneven structure 31 is not easily damaged, and the water repellency state can be maintained for a long time. Thereby, according to the structure 1 for bathrooms, an antifouling function can be maintained for a long time.

  In addition, for example, the resin base material 10 has a non-slip structure 11 having an unevenness interval wider than the uneven structure 31, and the film base material 20 and the resin layer 30 are provided along the uneven surface of the anti-slip structure 11, The uneven structure 31 is provided in the recess 12 of the anti-slip structure 11.

  Thus, since the uneven structure 31 is provided in the recess 12 of the anti-slip structure 11, the water flowing into the recess 12 can be effectively repelled so that the dirt does not adhere to the recess 12. Moreover, since the concavo-convex structure 31 is provided in the concave portion 12 that is difficult to come into contact with a foreign object (such as a human body or a sponge during cleaning), the concavo-convex structure 31 is not easily damaged. For this reason, since the shape of the concavo-convex structure 31 can be maintained for a long time, the water repellency is also maintained and the antifouling function is maintained.

  In the present embodiment, the convex-concave structure 31 is also provided on the convex portion 13 of the anti-slip structure 11. The concavo-convex structure 31 provided on the convex portion 13 is easily damaged by contact with foreign matter. However, for example, since the droplets adhering to the convex portion 13 easily flow into the concave portion 12 having a low height, the damage of the concavo-convex structure 31 provided on the convex portion 13 has little influence on the water repellency. Therefore, the water repellency of the bathroom structure 1 can be maintained for a long time, and the antifouling function can be maintained for a long time.

  For example, a low surface energy material having a contact angle with water of 90 ° or more is segregated on the surface of the concavo-convex structure 31, or a thin film containing the low surface energy material as a main component is formed as the surface layer 40. ing.

  Thus, since a low surface energy material is used for the surface layer 40, not only the concavo-convex structure 31 but also the super water repellency function can be realized in combination with the water repellency function of the material. That is, according to the bathroom structure 1, the super water-repellent function can be maintained for a long period of time, so that an excellent antifouling function can be maintained for a longer period of time.

  For example, the low surface energy material has a functional group containing fluorine.

  Thereby, since the surface energy of the surface layer 40 can be lowered by the functional group containing fluorine, a more excellent super water-repellent function can be realized.

  Further, for example, the fine particles are silica particles, and in the concavo-convex structure 31, the convex portions 33 are arranged in a triangular pattern, and the resin base material 10 is formed from an SMC material containing fiber reinforced plastic or glass fiber. .

  Thereby, the intensity | strength of the resin layer 30 and the resin base material 10 can be raised, respectively.

(Other)
As mentioned above, although the bathroom structure which concerns on this invention was demonstrated based on the said embodiment and its modification, this invention is not limited to said embodiment.

  For example, in the above-described embodiment, an example in which the resin base material 10 includes the anti-slip structure 11 has been described, but the present invention is not limited thereto. The resin base material 10 may be a flat sheet-like base material.

  Moreover, for example, in the above-described embodiment, the example in which the bathroom structure 1 includes the surface layer 40 has been described, but the present invention is not limited thereto. The bathroom structure 1 may not include the surface layer 40, and in this case, the resin layer 30 is exposed on the outermost surface. Specifically, the uneven structure 31 of the resin layer 30 is exposed on the outermost surface.

  Further, for example, in the above embodiment, the surface layer 40 containing the low surface energy material as a main component is formed, but the present invention is not limited to this. As the surface layer 40, a material having a high surface energy, that is, a hydrophilic material may be used. Thereby, the structure 1 for bathrooms can exhibit super hydrophilicity.

  In addition, the embodiment can be realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or a form obtained by subjecting each embodiment to various modifications conceived by those skilled in the art. Forms are also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Structure 10 for bathrooms Resin base material 11 Anti-slip structure (2nd uneven structure)
12 Concave part 13 Convex part 20 Film substrate 30 Resin layer 31 Concave and convex structure (first concave and convex structure)
32 Concave part 33 Convex part 40 Surface layer

Claims (5)

A resin substrate;
A film substrate supported by the resin substrate;
Comprising a fine particle having a diameter of 10 nm or more and 30 nm or less, and a resin layer supported by the film substrate,
The said resin layer is a structure for bathrooms which has the 1st uneven structure whose space | interval of an unevenness | corrugation is 300 nm or more and 10 micrometers or less, and the area ratio of a convex part is 0.5 or less. The resin base material has a second concavo-convex structure in which the concavo-convex interval is wider than the first concavo-convex structure,
The film substrate and the resin layer are provided along the uneven surface of the second uneven structure,
The bathroom structure according to claim 1, wherein the first uneven structure is provided in a recess of the second uneven structure. 2. The surface of the first concavo-convex structure is segregated with a low surface energy material having a contact angle with water of 90 ° or more, or a thin film containing the low surface energy material as a main component. Or the structure for bathrooms of 2. The bathroom structure according to claim 3, wherein the low surface energy material has a functional group containing fluorine. The fine particles are silica particles,
In the first uneven structure, the convex portions are arranged in a triangle,
The bathroom structure according to any one of claims 1 to 4, wherein the resin base material is formed from a fiber reinforced plastic or SMC (Sheet Molding Compound) material containing glass fiber.

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