JP2007262761A - Floor pan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor pan P which enables water to be hardly left as a waterdrop and stain to be hardly attached even when water is attached to a rising part 2 of the floor pan P and an almost horizontal part 1 in the vicinity of the rising part 2. <P>SOLUTION: The rising part 2 is erected at a peripheral edge of the almost horizontal part 1 to be a wash space in the floor pan P. A minute uneven part 3 having a hydrophilic property is formed in the almost horizontal part 1 in the vicinity of the rising part 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a floor pan installed in a bathroom.

  Conventionally, a bath space is formed by installing a floor pan on a floor slab of a bathroom (see, for example, Patent Document 1). About 1/3 to half of the floor pan is a bathtub installation part, and the remaining part is a washing place.

  As shown in FIG. 3, the surface of the floor pan P, in particular, the upper surface serving as a washing place is subjected to a hydrophilic treatment for ensuring drainage. Specifically, the hydrophilic treatment is performed by providing fine irregularities 3 on the surface, so that the spreading area of the water adhering to the fine irregularities 3 is increased to form a film, and the adhering water is independently formed as small water droplets. This is to prevent dirt such as water stains from remaining.

However, in the conventional floor pan P, the fine irregularities 3 for ensuring such hydrophilicity are due to various reasons such as manufacturing reasons, e.g. ease of manufacturing a mold, and restrictions from the viewpoint of design. Of course, only the substantially horizontal portion 1 on the upper surface of the floor pan P is subjected to hydrophilic treatment, and the fine unevenness 3 is not provided on the rising portion 2 standing on the periphery of the substantially horizontal portion 1 of the floor pan P. In other words, the fine irregularities 3 were not provided in the vicinity of the rising portion 2 of the substantially horizontal portion 1. For this reason, when water adheres to the rising portion 2 of the floor pan P or the substantially horizontal portion 1 in the vicinity of the rising portion 2, it remains as a water droplet, and when this water droplet dries, it becomes dirty.
JP 2004-251095 A

  The present invention has been invented in view of the above-mentioned conventional problems, and the object of the present invention is that even if water adheres to the rising portion of the floor pan or the substantially horizontal portion in the vicinity of the rising portion, it is difficult to remain as water droplets. It is an object to provide a floor pan that is difficult to stick.

  In order to solve the above problem, in the floor pan according to claim 1, in the floor pan P in which the rising portion 2 is erected on the periphery of the substantially horizontal portion 1 serving as a washing place, the substantially horizontal portion in the vicinity of the rising portion 2 is provided. 1 is provided with fine irregularities 3 for imparting hydrophilicity.

  By adopting such a configuration, even if water adheres to the vicinity of the rising portion 2 erected on the peripheral edge of the substantially horizontal portion 1 of the floor pan P, it does not easily remain as water droplets and is difficult to get dirty.

  The floor pan according to claim 2 is characterized in that, in claim 1, the fine unevenness 3 is provided on the side surface of the rising portion 2.

  By adopting such a configuration, even if water adheres to the rising portion 2 erected on the peripheral edge of the substantially horizontal portion 1 of the floor pan P, it does not easily remain as water droplets, and it is difficult to get dirt.

  In the present invention, even if water adheres not only to the substantially horizontal portion inside the upper surface of the floor pan, but also to the rising part of the peripheral edge or the vicinity of the rising part, it is difficult to remain as water droplets, making it difficult to get dirt. Even if it remains a little, it is easy to remove by cleaning.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The floor pan P is used to form a bathing space by installing the floor pan P on the floor slab of the bathroom, and a part of the upper surface serves as a bathtub installation part and the remaining part serves as a washing place. A portion that becomes a washing place (a rising portion 2 is erected on the periphery of a substantially horizontal portion 11 to be described later. An L-shaped panel mounting portion 4 is formed at the upper end of the rising portion 2. The wall panel WP is placed on the panel placement portion 4.

  The floor pan P is molded from various synthetic resins including FRP, but is often a synthetic resin having low hydrophilicity. The material having low hydrophilicity is a material having a large contact angle of water of 60 degrees or more on a mirror surface, that is, a flat surface (for example, 60 degrees to 75 degrees for a decorative fiber sheet, 75 degrees to 90 degrees for FRP). is there. If the surface of the floor pan P is a flat surface, it is not preferable that the remaining water swells without spreading and remains independently and becomes dirty when dried. Therefore, the fine unevenness 3 for imparting hydrophilicity to the surface of the floor pan P is provided. In the present invention, not only the intermediate portion of the substantially horizontal portion 1 of the washing place but also the substantially horizontal portion 1 as shown in FIG. The fine unevenness 3 of 1 μm to 100 μm is provided in the vicinity of the rising part 2 at the periphery or on the side surface of the rising part 2. In addition, the code | symbol 5 in a figure is the convex part for drainage groove 5a formation, and is width several mm-several cm.

  The side surface of the rising portion 2 of the floor pan P is a curved surface portion that is erected so as to be substantially perpendicular to the upper surface of the peripheral edge of the substantially horizontal portion 1 or is continuously connected from the substantially horizontal portion 1 to the side surface of the rising portion 2. The fine irregularities 3 may be connected to the corner where the rising portion 2 is rising, to the curved surface portion (see FIG. 1B), or further to the side surface of the rising portion 2 (see FIG. 1). (See (c)) It is provided continuously.

  The fine unevenness 3 is formed by forming the shape of the fine unevenness 3 (that is, the shape of the unevenness obtained by inverting the unevenness of the molded product) on the mold for forming the floor pan P, and then molding the synthetic resin. Of floor pan P. Here, the mold is pulled out in a direction perpendicular to the substantially horizontal portion 1 of the floor pan P, but the rising portion 2 has a draft to make it easy to pull out. Even if the fine irregularities 3 are provided on 2, the mold can be forcibly removed.

  Further, when the fine unevenness 3 is provided on the side surface of the rising portion 2, the rising portion 2 is formed as a separate member from the substantially horizontal portion 1 of the floor pan P as shown in FIG. This may solve the problem of removing the mold.

Hereinafter, the influence of the fine irregularities 3 on the hydrophilicity of the surface of the floor pan P will be described.
<Example 1>
The floor pan P is formed of a low hydrophilic material having a water contact angle of 60 degrees or more and less than 75 degrees on a mirror surface, like a decorative fiber sheet.

  The fine irregularities 3 formed on the surface of the material are composed of large protrusions and small protrusions.

The large protrusions are formed so that the average interval Sm is 20 to 100 μm and the ten-point average roughness Rz is 8 to 70 μm in the surface roughness measurement by the surface roughness meter. Projections are formed The small protrusions have a measurement range of 5 μm square on the surface, and any 10 points in the measurement range are measured with a laser microscope, the resolution in the horizontal and vertical (XY) direction is 0.044 μm, and the height When the measurement is performed with the resolution in the (Z) direction set to 0.01 μm, the ratio R (= S ₂ / S ₁ ) of the surface area S ₂ to the area S _{1 in} plan view of the measurement location is 1.2 ≦ It is formed so that R ≦ 2.5. In measurement by a laser microscope, in which the height at the measurement position of the horizontal and vertical (X-Y) (Z) is measured, the surface area S ₂ is calculated by measuring the height in the measurement range of the two-dimensional The Note the area S ₁ in plan view is equal to the surface area of when the height constant. In this example, R = 1.23.

  Next, the drainage property, drying property, and antifouling property were evaluated for this example.

  The drainage and drying properties are evaluated in three stages, the surface is tilted so that the gradient is 1/50, water is sprayed in the shower, and the drainage state after 60 seconds is visually observed. Met.

  As for the antifouling property, a carbon black test was conducted, and the carbon recovery rate was 90% or more, which was good.

From the above, it can be seen that the drainage and drying properties are good and the antifouling property is excellent.
<Example 2>
The floor pan P is formed of a material having a low hydrophilicity, such as FRP, whose water contact angle on the mirror surface is 75 degrees or more and less than 90 degrees.

  The fine protrusions formed on the surface of the material are composed of large protrusions and small protrusions.

  The large protrusions are formed so that the average interval Sm is 20 to 100 μm and the ten-point average roughness Rz is 8 to 70 μm in the surface roughness measurement by the surface roughness meter. A protrusion is formed.

The small protrusion has a measurement range of 5 μm square on the surface, and a laser microscope at any 10 points in the measurement range. The horizontal and vertical (XY) direction resolution is 0.044 μm and the height (Z) direction is When the measurement is performed with the resolution set to be 0.01 μm, the ratio R (= S ₂ / S ₁ ) of the surface area S ₂ to the area S _{1 in} plan view of the measurement location is 1.6 ≦ R ≦ 2.4. It was formed so that. Measurement with a laser microscope is the same as in Example 1. In this example, an experiment was conducted on three types of floor pans P having a surface area ratio R of A: R = 1.76, B: R = 1.99, and C: R = 2.31.

  The drainage and drying properties were evaluated in three stages, and the surface was tilted so as to have a gradient of 1/50, sprinkled with a shower, and the drainage state after 60 seconds was judged visually. And if the surface became a wide water film shape or a water film shape, it was good, and the state in which a mixture of water film and water droplets or many water droplets remained was poor. The shower watering conditions were a flow rate of 15 L / min, a distance of 30 cm, and a speed of 7 cm / sec.

  As a result, A and B were good in the form of a water film, and C was very good in the form of a wide water film.

  In addition, regarding the antifouling property, a carbon black test was conducted, and if the carbon recovery rate was 90% or more, it was determined to be very good, 85 to 90% to be good, and less than 85% to be bad.

  As a result, A and B were very good at 92%, and C was good at 86%.

  From the above, it can be seen that the drainage and drying properties are good and the antifouling property is excellent.

It is the floor pan of one Embodiment of this invention, (a) is an enlarged view of the corner of the periphery of a washing place, (b) is the principal part enlarged view of an example of (a), (c) is (a) It is a principal part enlarged view of the other example of. It is a floor pan of other embodiment, (a) is an enlarged view of the corner of the periphery of a washing place, (b) (c) is a principal part enlarged view explaining assembly. It is the conventional floor pan, (a) is an enlarged view of the corner of the periphery of a washing place, (b) is the principal part enlarged view of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substantially horizontal part 2 Standing part 3 Fine unevenness 4 Panel mounting part 5 Convex part 5a Drain groove P Floor pan WP Wall panel

Claims (2)

  A floor pan having a rising portion erected on the periphery of a substantially horizontal portion serving as a washing place, wherein the substantially horizontal portion in the vicinity of the rising portion is provided with fine irregularities for imparting hydrophilicity. 2. The floor pan according to claim 1, wherein fine irregularities are provided on a side surface of the rising portion.

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