WO2019146328A1

WO2019146328A1 - Member for water-use areas

Info

Publication number: WO2019146328A1
Application number: PCT/JP2018/047040
Authority: WO
Inventors: 真利子熊谷; 基晋青木; 真奥村
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-01-29
Filing date: 2018-12-20
Publication date: 2019-08-01
Also published as: TW201932690A; JPWO2019146328A1; TWI705176B; JP6982773B2

Abstract

A member (1) for water-use areas having joints (11) on the top face thereof comprises an uneven structure (30) that is provided on the top face of the member (1) for water-use areas and that has a plurality of protrusions (31) and a plurality of recesses (32)The plurality of protrusions (31) and the plurality of recesses (32) each have a long side along a first direction and are alternately provided side by side in a second direction intersecting the first direction. The widths of the protrusions (31) and recesses (32) in the second direction are in the order of micrometers. The first direction intersects the joints (11).

Description

Watering member

The present invention relates to a watering member.

BACKGROUND Conventionally, a bathroom floor sheet provided with a plurality of small projections on its surface is known (see, for example, Patent Document 1). The bathroom floor sheet described in Patent Document 1 has anti-slip properties by being provided with a plurality of small protrusions.

JP 2012-158914 A

However, in the above-mentioned conventional bathroom floor sheet, there is a problem that the droplets adhering to the surface remain and the quick drying property is poor.

Then, an object of this invention is to provide the water spreading member which has the outstanding quick-drying property.

In order to achieve the above object, a water spreading member according to an aspect of the present invention is a water spreading member having a joint on an upper surface, and has a plurality of projections and a plurality of recesses provided on the upper surface. The plurality of convex portions and the plurality of concave portions are elongated along a first direction, and are alternately provided in a second direction intersecting the first direction, The width of each of the protrusion and the recess in the second direction is on the order of micrometers, and the first direction is a direction intersecting the joint.

According to the present invention, it is possible to provide a water spreader having excellent quick drying properties.

FIG. 1: is a figure which shows the bathroom provided with the water around member which concerns on embodiment. Drawing 2 is a perspective view expanding and showing a part of watering member concerning an embodiment. FIG. 3 is a cross-sectional view of the water around member taken along line III-III of FIG. FIG. 4 is a perspective view showing the concavo-convex structure of the watering member according to the embodiment. FIG. 5 is a cross-sectional view of the concavo-convex structure and the film member taken along line VV of FIG. FIG. 6A is a cross-sectional view showing another example of the concavo-convex structure according to the embodiment. FIG. 6B is a cross-sectional view showing another example of the concavo-convex structure according to the embodiment. FIG. 7: is sectional drawing which shows each process of the manufacturing method of the film member of the watering member which concerns on embodiment.

Below, the water around member which concerns on embodiment of this invention is demonstrated in detail using drawing. Each embodiment described below shows one specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangements 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 components in the following embodiments, components not described in the independent claims are described as optional components.

Further, each drawing is a schematic view, and is not necessarily illustrated exactly. Therefore, for example, the scale and the like do not necessarily match in each figure. Further, in each of the drawings, substantially the same configuration is given the same reference numeral, and overlapping description will be omitted or simplified.

Further, in the present specification, the term indicating the relationship between elements such as parallel or orthogonal, the term indicating the shape of an element such as square or rectangle, and the numerical range are not expressions expressing only strict meanings. This expression is meant to include a substantially equivalent range, for example, a difference of about several percent.

Moreover, in the present specification and drawings, the x-axis, the y-axis and the z-axis indicate three axes of the three-dimensional orthogonal coordinate system. In each embodiment, the two axes parallel to the surface of the watering member are the x-axis and the y-axis, and the direction orthogonal to the surface is the z-axis direction. The positive direction of the x-axis is the main drainage direction of the watering member. The surface of the watering member is inclined relative to the horizontal surface to enhance drainage performance. For this reason, the z-axis direction is inclined with respect to the vertical direction. In addition, in this specification, "a planar view" means the thing when it sees from the direction perpendicular | vertical with respect to the surface of a water covering member.

Embodiment
[Overview]
First, the outline of the watering member 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a view showing a bathroom 90 provided with a watering member 1 according to the present embodiment.

The watering member 1 is a floor material for a bathroom used for the floor 91 of the bathroom 90, as shown in FIG. The water circulation member 1 can rapidly flow water toward the drainage groove 92 provided on the floor 91.

In addition, the water circulation member 1 may be provided in the bottom 94 of the bathtub 93 arrange | positioned at the bathroom 90 shown in FIG. The water circulation member 1 may be used not only in the bathroom 90 but also in the bottom of a sink or sink such as a washbasin or a kitchen, a drain, or a floor of a wet room or passage.

Below, the specific structure of the water covering member 1 is demonstrated in detail using FIG.2 and FIG.3.

[Constitution]
FIG. 2: is a perspective view which expands and shows a part of water covering member 1 which concerns on this Embodiment. FIG. 3 is a cross-sectional view of the water covering member 1 taken along line III-III in FIG.

As shown in FIGS. 2 and 3, the watering member 1 includes a floor member 10, a film member 20, and a concavo-convex structure 30. The water covering member 1 has the joint 11 on the upper surface.

The floor member 10 is provided with joints 11 on the surface. As shown in FIG. 3, the floor member 10 has joints 11 and a flat portion 12.

The joint 11 is a mesh-like groove provided on the surface of the floor member 10. As shown in FIG. 2, the joint 11 is, for example, a through joint (also referred to as a “corn joint”), and includes a plurality of longitudinal grooves 11 a and a plurality of lateral grooves 11 b.

The plurality of longitudinal grooves 11a are parallel to each other and arranged at equal intervals. The plurality of lateral grooves 11b are parallel to each other and arranged at equal intervals. The plurality of longitudinal grooves 11a and the plurality of lateral grooves 11b are orthogonal to each other.

A portion surrounded by two adjacent vertical grooves 11 a and two adjacent horizontal grooves 11 b is a flat portion 12. The flat portion 12 is a flat portion of the surface of the floor member 10. The flat portion 12 is parallel to the xy plane.

The arrangement interval of the vertical grooves 11 a and the arrangement interval of the horizontal grooves 11 b are, for example, the same. In this case, the front view shape of the flat portion 12 is a square. The arrangement interval of the vertical grooves 11a and the arrangement interval of the horizontal grooves 11b may be different. In this case, the front view shape of the flat portion 12 is a rectangle. Further, the longitudinal grooves 11a and the lateral grooves 11b may intersect diagonally. In this case, for example, the front view shape of the flat portion 12 is a parallelogram or a rhombus.

The width of each of the longitudinal grooves 11a and the lateral grooves 11b is on the order of millimeters. For example, the width of each of the vertical grooves 11a and the horizontal grooves 11b is 1 mm or more and 4 mm or less, but is not limited thereto. The width of each of the longitudinal grooves 11a and the lateral grooves 11b may be shorter than 1 mm or longer than 4 mm. The width of the longitudinal groove 11a is a length in the short side direction (that is, the y-axis direction) of the longitudinal groove 11a. The width of the lateral groove 11b is a length in the lateral direction (that is, the x-axis direction) of the lateral groove 11b.

As shown in FIG. 3, the cross-sectional shape of the longitudinal groove 11 a is an inverted trapezoidal shape, but is not limited thereto. The cross-sectional shape of the longitudinal groove 11a may be V-shaped or U-shaped. In addition, the cross-sectional shape of the vertical groove 11a may be rectangular or square without taper. The cross-sectional shape of the lateral groove 11b is, for example, the same as the cross-sectional shape of the longitudinal groove 11a, but may be different.

In the present embodiment, the entire floor member 10 is inclined downward toward the drainage direction. Specifically, as shown in FIG. 2, the longitudinal grooves 11 a extend in parallel to the drainage direction represented by the positive direction of the x-axis. The longitudinal groove 11a is inclined at an inclination angle φ with respect to the horizontal plane. The lateral grooves 11 b extend in parallel to the horizontal direction represented by the y-axis direction. The flat portion 12 is inclined at an inclination angle φ with respect to the horizontal plane.

The floor member 10 is premised on the person standing up. Therefore, the inclination angle φ is, for example, 1.2 degrees or less, for example, 1.1 degrees as an example, in order to reduce a sense of discomfort due to the floor being inclined when a person stands up.

The floor member 10 is formed of, for example, a thermoplastic resin or a thermosetting resin. Specifically, the floor member 10 is formed of a fiber reinforced plastic (FRP) or a sheet molding compound (SMC) material containing glass fibers. Alternatively, the floor member 10 may be formed of an artificial marble containing acrylic or polyester as a main component. The floor member 10 is formed, for example, by press molding using an SMC material.

The film member 20 is provided along the surface of the floor member 10. Specifically, as shown in FIG. 3, the film member 20 is provided so as to cover each of the joint 11 and the flat portion 12. The thickness of the film member 20 is substantially uniform. As shown in FIG. 3, on the upper surface of the film member 20, a groove having a shape substantially the same as the shape of the joint 11 of the floor member 10 is formed.

FIG. 4 is a perspective view showing the concavo-convex structure 30 of the watering member 1 according to the present embodiment. As shown in FIG. 4, the uneven structure 30 is provided on the top surface of the film member 20.

The uneven structure 30 is also provided at the joint 11. Specifically, as shown in FIG. 4, the concavo-convex structure 30 is continuously provided at the joint 11 and the flat portion 12 excluding the joint 11. More specifically, the concavo-convex structure 30 is provided on the entire flat portion 12 and the longitudinal groove 11 a across the plurality of flat portions 12 aligned along the y-axis direction. Further, the concavo-convex structure 30 is also provided in the lateral groove 11 b.

FIG. 5 is a cross-sectional view of the concavo-convex structure 30 and the film member 20 taken along line VV of FIG. As shown in FIG. 5, the film member 20 includes a base 21 and a resin layer 22.

The base 21 is a member that supports the resin layer 22. The base 21 is provided on the floor member 10. Specifically, the base 21 is provided along the joint 11 and the flat portion 12 of the floor member 10.

The substrate 21 is, for example, a resin film, a metal foil or a non-woven fabric. As a material of the resin film, polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyvinyl acetate (PVAc) or the like can be used. The size and shape of the substrate 21 are not particularly limited. The substrate 21 has an appropriate size and shape depending on the purpose of use, the use environment, and the like.

The resin layer 22 is provided on the base 21. The resin layer 22 is formed using, for example, a photocurable resin material such as an ultraviolet curable resin. As the ultraviolet curing resin, silicone resin, acrylic resin, urethane resin and the like can be used. The thickness of the resin layer 22 is, for example, 1 μm to 50 μm, but is not limited thereto.

The resin layer 22 has a concavo-convex structure 30 as shown in FIGS. 4 and 5. The concavo-convex structure 30 is provided on the upper surface of the resin layer 22, and is provided on the uppermost surface of the water around member 1. That is, when the water covering member 1 is used for a floor material etc., the uneven structure 30 is exposed to the outermost surface.

In the present embodiment, the contact angle to water of the material forming the concavo-convex structure 30, that is, the material of the resin layer 22 is 90 degrees or less. That is, the resin layer 22 is formed using a hydrophilic material.

As shown in FIGS. 4 and 5, the concavo-convex structure 30 has a plurality of convex portions 31 and a plurality of concave portions 32. The uneven structure 30 is a fine uneven structure having a stripe shape. The stripe shape is a shape in which a plurality of convex portions 31 extending substantially in parallel to each other are arranged at a predetermined interval. Recesses 32 are between adjacent convex portions 31.

The stripe shape is also referred to as a line-and-space shape in which lines and spaces are alternately arranged and extends in the same direction. The convex portion 31 corresponds to a line, and the concave portion 32 corresponds to a space.

Each of the plurality of convex portions 31 and the plurality of concave portions 32 is elongated along the first direction. A first direction which is a direction in which the convex portion 31 and the concave portion 32 extend intersects the joint 11. Specifically, as shown in FIG. 4, the first direction is orthogonal to the joint 11 and parallel to the y-axis direction.

In the present embodiment, the first direction is orthogonal to the longitudinal groove 11 a of the joint 11. That is, the first direction is orthogonal to the drainage direction of the watering member 1. The first direction may be orthogonal to the lateral groove 11 b of the joint 11. Alternatively, the first direction may obliquely intersect at least one of the longitudinal grooves 11a and the lateral grooves 11b.

The plurality of convex portions 31 and the plurality of concave portions 32 are alternately provided in a second direction intersecting the first direction. A second direction which is a direction in which the plurality of convex portions 31 and the plurality of concave portions 32 are arranged is orthogonal to the first direction. Specifically, as shown in FIG. 4 and FIG. 5, the convex portions 31 and the concave portions 32 are alternately provided one by one in the x-axis direction.

The shapes of the plurality of convex portions 31 are the same as each other, and the shapes of the plurality of concave portions 32 are also the same as one another, but are not limited thereto. The shapes of the convex portion 31 and the concave portion 32 may be different from each other.

As shown in FIG. 5, the cross-sectional shape of each of the protrusion 31 and the recess 32 is, for example, a rectangle or a square. The width w1 of the protrusion 31 and the width w2 of the recess 32 are on the order of micrometers. Specifically, the widths w1 and w2 have a length of 1 μm or more and less than 1 mm (1000 μm).

In the present embodiment, the width w1 of the protrusion 31 is equal to or less than the width w2 of the recess 32. When the upper surface of the water pouring member 1 is viewed from the front, the plurality of convex portions 31 occupy 50% or less of the area occupied by the plurality of convex portions 31 and the plurality of concave portions 32. In other words, the area occupied by the plurality of projections 31 is equal to or less than the area occupied by the plurality of recesses 32. The width w1 of the convex portion 31 is, for example, in the range of 5 μm to 50 μm, and is 10 μm as an example. The width w2 of the recess 32 is, for example, in the range of 5 μm to 50 μm, and is 10 μm as an example.

The ratio of the depth h to the width w2 of the recess 32, that is, h / w2 is 0.1 or more and 0.6 or less. The depth h of the recess 32 corresponds to the height of the protrusion 31. The depth h is represented, for example, by the height from the highest position of the convex portion 31 to the lowest position of the concave portion 32.

In addition, a radius (rounded portion) may be provided at the corner of the tip end portion of the convex portion 31. The tip of the convex portion 31 is a tip in the height direction (z-axis direction). In the present embodiment, since the cross-sectional shape (xz cross section) of the convex portion 31 is substantially rectangular, the upper surface (surface on the positive side in the z-axis direction) of the convex portion 31 corresponds to the tip of the convex portion 31.

The rounded portion (curved portion) is, for example, a curved surface of a predetermined radius. The predetermined radius is, for example, not more than 1.4 times the height h of the convex portion 31. Further, the corner of the tip end portion of the convex portion 31 may be an inclined surface which is inclined with respect to the upper surface of the convex portion 31 without being limited to the radius. As a result, dust, dirt and the like are less likely to be caught on the convex portions 31, and the antifouling property can be enhanced.

Further, the shape of the concavo-convex structure 30 is not limited to the example shown in FIG. Here, different shapes of the uneven structure 30 will be described with reference to FIGS. 6A and 6B.

FIG. 6A is a cross-sectional view showing a concavo-convex structure 30 a which is another example of the concavo-convex structure 30 according to the present embodiment. As shown to FIG. 6A, the uneven structure 30a has several convex part 31a and several concave part 32a. The concavo-convex structure 30 a is the same as the concavo-convex structure 30 except that the cross-sectional shape in the short direction is different.

As shown in FIG. 6A, the width of the convex portion 31a is longer at the root portion than at the tip portion. Specifically, the width of the protrusion 31a gradually increases from the tip to the root. The cross-sectional shape of the convex portion 31a is, for example, trapezoidal. The width wb of the root portion of the convex portion 31a is longer than the width wa of the tip portion.

The width of the recess 32a is shorter on the bottom side than on the opening side, contrary to the protrusion 31a. The cross-sectional shape of the recess 32a is, for example, an inverted trapezoidal shape.

In the concavo-convex structure 30a shown in FIG. 6A, the width w1 of the convex portion 31a and the width w2 of the concave portion 32a are, for example, widths at a central point in the depth direction of the concave portion 32a (that is, a position of height h / 2). It is defined, but not limited to this.

FIG. 6B is a cross-sectional view showing a concavo-convex structure 30 b which is another example of the concavo-convex structure 30 according to the present embodiment. As shown to FIG. 6B, the uneven structure 30b has several convex part 31b and several concave part 32b. The concavo-convex structure 30 b is the same as the concavo-convex structure 30 except that the cross-sectional shape in the short direction is different.

As shown to FIG. 6B, the width | variety of the convex part 31b is longer in a root part rather than a front-end | tip part. Specifically, the width of the convex portion 31 b gradually increases from the tip portion to the root portion. The cross-sectional shape of the convex portion 31 b is, for example, semicircular.

Furthermore, as shown to FIG. 6B, the convex part 31b has taper 33b in root part. Specifically, the taper 33 b is, for example, a curved surface of a predetermined radius. The predetermined radius is equal to or less than 0.1 times the height h of the convex portion 31 b. The taper 33 b may not be a curved surface but may be an inclined surface.

In the concavo-convex structure 30b shown in FIG. 6B, the width w1 of the convex portion 31b and the width w2 of the concave portion 32b are, for example, widths at a central point in the depth direction of the concave portion 32b (that is, a position of height h / 2). It is defined, but not limited to this.

Further, the shape of the concavo-convex structure is not limited to the example described above. For example, the concavo-convex structure may be formed in a sawtooth shape, or may be formed in a wavy shape. For example, the cross-sectional shape of the convex portion may be a triangle, and the cross-sectional shape of the recess may be an inverted triangle. That is, the upper surface of the convex portion may not be flat but may be sharp. Also, the bottom surface of the recess may not be flat but may be pointed. That is, the recess may be a V-shaped groove.

[Production method]
Then, the manufacturing method of the watering member 1 which concerns on this Embodiment is demonstrated.

FIG. 7: is sectional drawing which shows each process of the manufacturing method of the film member 20 of the watering member 1 which concerns on this Embodiment. The film member 20 is manufactured using, for example, a transfer technique using a nanoimprint apparatus or a roll-to-roll gravure printing apparatus.

First, as shown in (a) of FIG. 7, the base material 21 is prepared, and the resin film 22 a is formed on the prepared base material 21. For example, the resin film 22 a is formed by applying an ultraviolet curable resin material on the surface of the base 21 using a discharge device or the like. At this time, the resin film 22a is not cured and can be easily deformed.

Next, as shown in (b) of FIG. 7, a mold 95 is prepared. The mold 95 is provided with a concavo-convex structure 96 for transferring the concavo-convex structure 30 to the resin film 22 a. The concavo-convex structure 96 has a shape in which the concavities and convexities of the concavo-convex structure 30 are reversed.

Next, as shown in (c) of FIG. 7, the concave and convex structure 30 is formed on the resin film 22 a by pressing the mold 95 against the resin film 22 a. Specifically, the concavo-convex structure 30 of the mold 95 is transferred to the surface of the resin film 22a, whereby the concavo-convex structure 30 is formed on the surface of the resin film 22a.

At this time, the resin film 22 a is cured by irradiating ultraviolet light from the side of the base material 21 in a state where the mold 95 is sufficiently pressed to the resin film 22 a. Thereby, the concavo-convex structure 30 is formed on the resin layer 22.

Finally, as shown in (d) of FIG. 7, the film member 20 having the uneven structure 30 is formed by removing the mold 95.

As described above, the film member 20 is manufactured. By attaching the manufactured film member 20 to the surface of the floor member 10, the water-covered member 1 is manufactured.

[Effect, etc.]
As described above, the water spreading member 1 according to the present embodiment is a water spreading member having the joint 11 on the upper surface, and is provided with the unevenness having the plurality of projections 31 and the plurality of recesses 32 provided on the upper surface. A structure 30 is provided. Each of the plurality of convex portions 31 and the plurality of concave portions 32 is long in the first direction, and is alternately provided in the second direction intersecting the first direction. The width of each of the protrusion 31 and the recess 32 in the second direction is on the order of micrometers. The first direction in which the convex portions 31 and the concave portions 32 extend is a direction intersecting the joint 11.

As a result, since the long convex portions 31 and the long concave portions 32 of the concavo-convex structure 30 are formed in a stripe shape, the droplets attached to the concavo-convex structure 30 have the convex portions 31 and the concave portions 32 extended. It is easy to flow along one direction. Since the first direction intersects the joint 11, droplets flowing along the first direction are easily drawn into the joint 11. The droplets drawn into the joint 11 gather together, increase in weight, and are drained by the inclination of the joint 11 along the drainage direction.

As described above, since the droplets adhering to the surface of the water around member 1 are easily drawn into the joint 11, the amount of droplets (also referred to as residual droplets) remaining on the flat portion 12 can be sufficiently reduced. By reducing the amount of residual droplets, the disappearance due to evaporation or the like is promoted, and the drying of the water around member 1 becomes quick.

As described above, according to the present embodiment, the water spreading member 1 having excellent quick drying property is provided. By increasing the quick drying property, it is possible to suppress an increase in mold and slime and the like, and it is also possible to enhance the antifouling property of the water spreading member 1.

Further, for example, the first direction in which the convex portion 31 and the concave portion 32 extend is a direction orthogonal to the joint 11.

As a result, the droplets are more easily drawn into the joint 11, so that the quick drying property of the water around member 1 can be improved.

Also, for example, the ratio of the depth to the length in the second direction of each of the plurality of recesses 32 is 0.1 or more and 0.6 or less.

Thereby, since the recessed part 32 does not become too deep, it can suppress that stain | pollution | contamination remain in the recessed part 32. FIG. According to the antifouling property test conducted by the present inventors, when the ratio of the depth to the width of the recess 32 is 0.6 or less, sufficient antifouling property can be secured.

Also, for example, a floor member 10 provided with joints 11 on the surface, a base member 21 provided on the floor member 10, and a film member 20 having a resin layer 22 provided on the base member 21 are provided. . The resin layer 22 has a concavo-convex structure 30 on the opposite surface of the base 21.

Thereby, since the concavo-convex structure 30 is provided on the surface of the resin layer 22, the concavo-convex structure 30 with high processing accuracy can be formed by, for example, nanoimprinting. Since the dimension of the concavo-convex structure 30 is easily formed as designed, expected quick drying can be easily realized.

Further, for example, the contact angle to water of the material forming the concavo-convex structure 30 is 90 degrees or less.

As a result, since the material constituting the concavo-convex structure 30 is hydrophilic, the droplet flows so as to fill the recess 32 and flows so as to slide on the droplet buried in the recess 32. Therefore, the contact portion between the droplet not filling the concave portion 32 and the concavo-convex structure 30 is only the tip portion of the convex portion 31. Since the contact area between the droplet and the concavo-convex structure 30 is reduced, the droplet is less susceptible to the frictional force from the convex portion 31 and is flowed in a sliding manner. That is, the water sliding property of the droplet is enhanced, and it becomes easy to be drawn into the joint 11 promptly. As described above, according to the present embodiment, it is possible to further enhance the quick drying property of the watering member 1.

For example, when the top surface of the watering member 1 is viewed from the front, the plurality of convex portions 31 occupy 50% or less of the area occupied by the plurality of convex portions 31 and the plurality of concave portions 32.

As a result, the contact area between the convex portion 31 and the droplet can be reduced, so that the droplet is less susceptible to the frictional force from the convex portion 31 and is made to slide in a sliding manner. As described above, according to the present embodiment, it is possible to further enhance the quick drying property of the watering member 1.

Also, for example, the width of each of the plurality of convex portions 31 may be longer at the root portion than at the tip portion.

As a result, the droplet is easily drawn into the recess 32, and the droplet is likely to be filled in the recess 32. As described above, since the droplets fill the concave portions 32 to increase the water sliding property of the droplets, it is possible to further enhance the quick drying property of the water-covered member 1.

Also, for example, the width of each of the plurality of protrusions 31 may gradually increase from the tip to the root.

As a result, the droplet is easily drawn into the recess 32, and the droplet is likely to be filled in the recess 32. Because the droplets fill the recesses 32 to increase the water slippage of the droplets, it is possible to further enhance the quick drying property of the water around member 1.

Also, for example, each of the plurality of convex portions 31 may have a taper at the root portion.

As a result, dirt and the like are less likely to be accumulated at the bottom of the concave portion 32, so that the antifouling property can be enhanced.

Further, for example, the concavo-convex structure 30 is provided continuously at the joint 11 and the flat portion 12 which is a portion excluding the joint 11. Specifically, the plurality of convex portions 31 and the plurality of concave portions 32 are continuous from the flat portion 12 toward the joint 11.

As a result, since the flat portion 12 and the joint 11 are connected by the continuous convex portion 31, the droplet is more easily drawn into the joint 11.

(Others)
As mentioned above, although the water ring member which concerns on this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment.

For example, the uneven structure 30 may be provided only on the flat portion 12. For example, the film member 20 provided with the uneven structure 30 may be provided only on the flat portion 12. The concavo-convex structure 30 may not be provided in at least one of the longitudinal groove 11 a and the lateral groove 11 b constituting the joint 11.

Further, for example, in the above-described embodiment, although the example in which the vertical groove 11a of the joint 11 is parallel to the drainage direction has been described, the present invention is not limited thereto. The joint 11 may be provided in a direction that obliquely intersects the drainage direction.

Also, for example, the surface of the floor member 10 may not be inclined with respect to the horizontal plane. That is, the vertical grooves 11 a and the horizontal grooves 11 b of the joint 11 and the flat portion 12 may be parallel to the horizontal surface.

Also, for example, in the above embodiment, the concavo-convex structure 30 is formed using a hydrophilic material, but the concavo-convex structure 30 may be formed using a water repellent material.

Also, for example, the uneven structure 30 may be provided directly on the upper surface of the floor member 10 having the joint 11. That is, the water around member 1 may not have the film member 20.

Further, for example, in the above embodiment, the inclination angle φ of the surface of the watering member 1 is 1.2 degrees or less, but the inclination angle φ may be larger than 1.2 degrees. For example, in the case where the watering member 1 is used for a structure where it is not assumed that a person stands up very much, for example, the bottom of the bath 93, the inclination angle φ is greater than 1.2 degrees without giving discomfort to people. It is finished. Therefore, drainage can be enhanced by making the inclination angle φ larger than 1.2 degrees.

Also, for example, the contact angle to water of the material forming the concavo-convex structure may be less than 90 degrees, such as 80 degrees or less, or 60 degrees or less.

In addition, the present invention can be realized by arbitrarily combining components and functions in each embodiment without departing from the scope of the present invention or embodiments obtained by applying various modifications that those skilled in the art may think to each embodiment. The form is also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Water covering member 10 Floor member 11 Joint 20 Film member 21 Base material 22

Resin layer

30, 30a, 30b

Irregular structure

31, 31a,

31b Convex part

32, 32a, 32b Concave part

Claims

It is a watering member having a joint on the top,
It has a concavo-convex structure having a plurality of convex portions and a plurality of concave portions provided on the upper surface,
Each of the plurality of convex portions and the plurality of concave portions is elongated along a first direction, and is alternately provided in a second direction intersecting the first direction,
The width of each of the protrusion and the recess in the second direction is on the order of micrometers.
The first member is a direction intersecting with the joint.
The watering member according to claim 1, wherein the first direction is a direction orthogonal to the joint.
The water ring member according to claim 1 or 2, wherein a ratio of a depth to a length in the second direction of each of the plurality of concave portions is 0.1 or more and 0.6 or less.
A floor member provided on the surface with the joints;
A substrate provided on the floor member, and a film member having a resin layer provided on the substrate;
The water spreading member according to any one of claims 1 to 3, wherein the resin layer has the uneven structure on the surface on the opposite side of the base material.
The water spreading member according to any one of claims 1 to 4, wherein a contact angle of the material forming the concavo-convex structure with water is 90 degrees or less.
When the top surface of the watering member is viewed in front, the plurality of convex portions occupy 50% or less of the area occupied by the plurality of convex portions and the plurality of concave portions. The watering member according to any one of the items.
The watering member according to any one of claims 1 to 6, wherein a length in the second direction of each of the plurality of convex portions is longer at a root portion than at a tip portion.
The watering member according to any one of claims 1 to 7, wherein the length in the second direction of each of the plurality of convex portions gradually increases from the tip portion to the root portion.
The watering member according to any one of claims 1 to 8, wherein each of the plurality of convex portions has a taper at a root portion.
The water spreading member according to any one of claims 1 to 9, wherein the uneven structure is provided continuously in the joint and a portion excluding the joint.