JPH084247A - Contamination resistant external wall material - Google Patents

Abstract

PURPOSE:To reduce the contamination of a wall surface by forming the surface of a specified area from the upper part of each base material forming an external wall into a water repelling coating film surface, and the surface of the remaining area in the lower part into a hydrophilic coating film surface, and effectively carrying away the dirt. CONSTITUTION:A water repelling paint film 4 is formed in the area w1 of about 1/3 from the upper part of the dressed surface 2 of a contamination resisting external wall material 1. A hydrophilic paint film 5 is formed in the area w2 of the remaining 2/3. At the time of raining, the rainwater making contact with the upper part is repelled by the coating film 4, and carried down. A large quantity of the carried rainwater wets the coating film 5 to ooze out the dirt, and carries it away to make the surface clean. The dirt can be significantly reduced, the dirt can be easily removed only by washing, the weathering resistance can be improved, and since the hydrophilic coating film absorbs a trace amount of moisture to become difficult to charge with static electricity, the wall hardly dirties.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stain-resistant outer wall material in which the stain resistance of the outer wall of a building or a structure, particularly the dry outer wall material, is improved.

[0002]

2. Description of the Related Art In recent years, the living environment is severely polluted with air, and it is the reality that the outer walls are considerably soiled in a few months. As a countermeasure, wash with water or a cleaning agent. Use a smooth surface to prevent dust and dirt from adhering. Use an antistatic coating.
Make a water coating film. Camouflage with embossed patterns and colors. And so on.

[0003]

However, it is a simple and preferable method to clean the above-mentioned outer wall surface, but it takes time and cost to set up the scaffold, and if the number of times is large, scratches on the cosmetic surface are caused. Also, peeling of the coating film occurs. In addition, the above-mentioned cannot be expected to change the decorative surface and has a finished surface similar to the glass surface, and cannot exhibit the characteristics of metal.

Further, in the above-mentioned case, since the coating material contains the conductor, the surface is not smooth, and the conductor cannot be uniformly distributed, so that dust and dust are unevenly distributed.

Further, in the water-dried coating film, droplets are unevenly distributed depending on the distribution density, and dust and dirt adhere to the droplets.
There was a drawback that dirt spreads around dust as a core.

Further, the above is not a fundamental solution, but the degree of dirt is reduced by the optical illusion.
There was a disadvantage that the selection range was limited in terms of color and pattern.

[0007]

In order to eliminate such drawbacks, the present invention, in the case of vertical construction in a building or a structure, extends from the eaves to the base in a region of about 1/3 of the outer wall material (decorative surface). A water-repellent coating is formed on the other side, and a stain-resistant coating made of a hydrophilic coating is formed on the other area, and in the case of horizontal lining, the width per sheet is above, that is, 1/3 from the mounting portion. A water-repellent coating film is formed on the upper area (decorative surface), and a hydrophilic coating film is formed on the other remaining areas. Rainwater generally flows down from the upper 1 / 3rd position downward, Contamination-resistant outer wall material that replaces stains with "familiarity" and "wetness" with the coating surface and further removes the stains by rainwater flowing down from above to significantly improve the stain resistance by self-cleaning ability Is proposed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the stain resistant outer wall material according to the present invention will be described in detail below with reference to the drawings. 1 and 2 (a) to 2 (c) are explanatory views showing an embodiment of the stain resistant outer wall material according to the present invention, in which 1 is a metal-based composite board, a ceramic tile, a cement extruded slab, etc. One type of dry type stain resistant outer wall material, 2 is one type of surface material such as metal type, ceramic type, tile type, etc., 6 is a core material, 7 is a back side material, 8 is a male connecting portion, 9 is a female It is a mold connection part.

More specifically, the stain-resistant outer wall material 1 is a dry outer wall material, and is composed of a metal siding material, a spandrel, a ceramic siding material, a concrete extruded product, a resin extruded product, and the like. In some cases, the dry stain resistant outer wall material 1 does not require the core material 6 and the back surface material 7.

The backing material 7 is made of a surface-treated steel plate, an aluminum plate, an aluminum extruded plate, a stainless steel plate or the like, and a thin plate material is formed into a predetermined shape by roll molding or press molding, for example, a gutter shape.

A decorative surface 3 is a smooth surface, or an embossed surface having an uneven pattern such as stucco, a rippled surface, etc., and an area W ₁ about 1/3 above the decorative surface 3 (in the eaves direction). The outermost surface is formed with a room temperature dry type or baking type water repellent coating film 4, and the other decorative surface 3, that is, about 2/3 remaining
The surface of the position region (W ₂ ) is composed of a room temperature dry type or a baking type hydrophilic coating film 5.

In other words, when rainwater comes in contact with the upper side, it is repelled by the water-repellent coating film 4 and all flows down, and the large amount of rainwater wets the hydrophilic coating film 5 to exude dirt or ooze it to adhere. , Pour out the dirt such as the soaked dust,
It has a clean surface. In addition, such a mechanism is always repeated in the case of rain.

The area is limited to about 1/3 and 2/3 by the amount of rainfall that falls to the 1 / 3rd of the total makeup surface, and by constantly repelling it, it is about 2/3. Makeup area 3
Rain that comes into contact with the surface is collectively guided, and at that time, the hydrophilic coating film 5
The surface of the soil is exuded by the combination of water and the hydrophilic molecules in the surface, which makes the surface "jelly" and "familiar", and rainwater from the upper side (water-repellent coating 4) flows down and the dirt is also moved downward. It is what is washed away, and this phenomenon occurs on the entire wall surface.

More specifically, for example, referring to FIG.
It is formed as shown in (a) to (c). That is, FIG. 2 (a) shows that the water repellent coating film 4 and the hydrophilic coating film 5 are applied to a predetermined area on the lower surface of the final surface of the surface material 2 by a roll coater, a curtain flow coater, a sprayer or the like to a desired area. The aqueous coating film 4 and the hydrophilic coating film 5 are formed, and the thickness of each coating film is about 10 to 100 microns.

In FIG. 2B, a hydrophilic coating film 5 is formed on the entire decorative surface 3.
To form a decorative surface 3 having a water-repellent coating film 4 formed in the region of W ₁ thereon, and the treatment of the boundary between the water-reflective coating film 4 and the hydrophilic coating film 5 was a clean decorative surface 3. The stain resistant outer wall material 1.

FIG. 2C shows a water repellent coating film 4 and a hydrophilic coating film 5.
Is a stain-resistant outer wall material 1 when at least one of the above is formed into a film and attached, and has a thickness of about 10 to 50 microns. The film-shaped surface has smoothness more than the surface of the coating film, and the degree of deterioration is smaller than that of the coating film.

Therefore, in order to compare the stain resistance (non-stain resistance) performance, a test body having the following specifications was manufactured, and the results of comparing the stain resistance and the weather resistance are shown in Table 1.

[Table 1]

In the embodiment, a coating film containing silicon resin as a main component is formed as the water repellent coating film 10 on the decorative surface 3 of the aluminum surface material 2 in a thickness of 10 μm (dry), and the hydrophilic coating film 5 is fluorine. Containing ceramic modified coating film, for example, "Product name Ares Serafusso (Kansai Paint Co., Ltd.)"
Micron (dry) was formed as shown in FIG.
The comparative example is a color steel plate overcoated with polyester. In addition, means the comparison by measuring the difference in lightness (ΔL) after a year in a certain region, and means the stain after the weather resistance test and the sunshine WOM irradiation time (2000
It means the comparison of the brightness difference (ΔL) after (time).

As is clear from the above performance comparison, the stain-resistant outer wall material 1 according to the present invention has stains of rainwater and a hydrophilic coating film 5.
It is replaced by the familiarity with the water-repellent coating film, and the water-repellent coating film 4 has a function of collecting rainwater, so that dirt can be more easily flowed down, the stain resistance of the decorative surface 3 can be greatly improved, and the weather resistance can be excellent. In addition, as for the water-repellent coating film 4, it is preferable that the area where the rainwater flows down to further remove stains is about 1/3.

[0020]

As described above, according to the stain resistant outer wall material of the present invention, the degree of stain on the decorative surface can be greatly improved. It also has weather resistance. Rainwater is repelled by the upper water-repellent coating film and is collected quantitatively and flows down.The stains are replaced by the familiarity between the hydrophilic coating film and the rainwater, and the rainwater vigorously flows into this replaced state to further remove dirt. Since it is dropped, a beautiful makeup surface can be obtained for a long period of time. Even if dirt is attached, it can be removed very easily by washing.
Since the coating film is hydrophilic, it absorbs a small amount of moisture, static electricity is less likely to be charged, and dust is less likely to adhere to the surface, which makes it more resistant to stains. There are characteristics and effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a stain resistant outer wall material according to the present invention.

FIG. 2 is an enlarged view showing a part of an embodiment of a decorative surface of the stain resistant outer wall material according to the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the stain resistant outer wall material according to the present invention.

FIG. 4 is a cross-sectional view showing another embodiment of the stain resistant outer wall material according to the present invention.

[Explanation of symbols]

 1 Stain-resistant outer wall material 2 Surface material 3 Decorative surface 4 Water-repellent coating film 5 Hydrophilic coating film 6 Core material 7 Back surface material 8 Male type connecting part 9 Female type connecting part

Claims (1)

[Claims] 1. In a dry-type outer wall material which is vertically and horizontally stretched, the surface of a region of about 1/3 of the decorative surface of each base material from the eaves side to the bottom is a water-reflective coating surface, and the remaining about 2 A stain-resistant outer wall material, wherein the surface of a region of about ⅓ is a hydrophilic coating film surface.