JPH084246A - Contamination resistant external wall material - Google Patents

Abstract

PURPOSE:To provide a dry external wall material in which the contamination resistance, particularly, of the dressed surface of the outer wall material has significantly been improved. CONSTITUTION:In the dressed surface 2 having a recessed pattern 3 and a protruding pattern 4 of an external wall material 1, one of the recessed pattern 3 and the protruding pattern 4 is protected with a hydrophilic paint film 10, and the other with a water repelling paint film 11. The dirt adhered onto the dressed surface 2 is reduced, the dirt, even when adhered, is removed by the familiarity and repellence with the rainwater, and the beautiful dressed surface 2 is kept over a long period of time.

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 having improved stain resistance on the outer wall of buildings and structures, especially on the decorative surface of the outer wall material.

[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 surface is not smooth due to the coating material to which the electric conductor is added, the electric conductor cannot be evenly distributed, and there is a disadvantage that dust is unevenly distributed.

Further, in the water-repellent coating film, since the droplets are unevenly distributed due to the distribution density and dust and dirt adhere to the droplets, there is a drawback that the dirt spreads by using the dust and dirt 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 provides a decorative surface of an outer wall material, in particular, a decorative surface on which irregular patterns having an arbitrary pattern are formed by an embossed pattern or the like. Coat with a water-repellent coating film, and coat the other with a hydrophilic coating film to replace stains by rainwater or wash water and the "compatibility" and "repellency" of the coating film, and improve the stain resistance by the self-cleaning ability, The present invention proposes a stain-resistant outer wall material that always has a beautiful decorative surface and has enhanced weather resistance.

[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 are explanatory views showing an embodiment of a stain resistant outer wall material according to the present invention, in which 1 is an outer wall material such as a metal plate, a ceramic plate, a tile, a cement plate, a composite plate with various materials, and the like. The dry material of item (1) is provided with at least the optional concave pattern 3 and convex pattern 4 on the decorative surface 2.

A core material 5 is made of one of polyurethane foam, polyisocyanurate foam, phenol foam, and flame-retardant materials thereof, and is integrally interposed between the surface material 6 and the back surface material 7.

Reference numeral 8 denotes a male connecting portion which is formed on one of the side walls of the decorative surface 2 so as to match or be concave, and further has a shape as shown in the figure, and 9 denotes a female connecting portion for the male connecting portion. It has a shape that fits with the portion 8. It should be noted that the outer wall member 1 does not necessarily require the male connecting portion 8 and the female connecting portion 9.

Explaining further, the outer wall material 1 is a dry type outer wall material, and as a specific example, it is made of a metal siding material, a spandrel, a ceramic siding material, a concrete extruded product, a resin extruded product, or the like. In some cases, the dry outer wall material 1 does not require the core material 5 and the back surface material 7.

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

The decorative surface 2 has concave patterns 3 and convex patterns 4 formed in arbitrary shapes. For example, as shown in an enlarged view in FIG. 2, one of the patterns is covered with a hydrophilic coating film 10 and the other is covered. It is coated with a water-repellent coating film 11, and the thickness of the coating film is 1
0 to 50 microns (dry). In addition, the coating method can be wiped with a roll coater, curtain flow coater, spray, or the like, or the paint can be applied at a predetermined position by matching the concave pattern 3 and the convex pattern 4, for example, application through a pattern, spraying by computer management It uses one kind of technique such as a coating device and transfer.

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

[Table 1]

In other words, Example 1 is a plate body color-coated on an aluminum plate (0.4 mm), in which the concave pattern 3 is covered with a water-repellent coating film 11 and the convex pattern 4 is covered with a hydrophilic coating film 10. The material 1 is the same as the material 1 in Example 2 except that the concave pattern 3 and the convex pattern 4 (depth: 0.5 mm) are the same as in Example 1 except that the hydrophilic coating film 1 is formed.
0, when coated with a water-repellent coating film 11.

The hydrophilic coating film 10 is a modified coating of a fluorine-containing ceramic, for example, a product name "Ares Serafusso (manufactured by Kansai Paint Co., Ltd.)" having a thickness of about 20 microns (dry). Furthermore, as the water-repellent coating film 11, a coating film having a thickness of 20 μm (dry) was formed with a paint containing silicon resin as a main component. As a comparative example, a coating material containing a polyester resin as a main component was applied to form a coating film having the same thickness as in Example 1.

Incidentally, means a comparison by measuring the lightness difference (ΔL) one year after in a certain region, and means stains after the weather resistance test and the sunshine WOM irradiation time (200).
It means the comparison of the lightness difference (ΔL) after 0 hour. Also,
In Examples 1 and 2, the difference in performance is shown in (a) the area ratio of the concave pattern 3 and the convex pattern 4, (b) each hydrophilic coating film 10,
It is presumed to be the non-staining functional difference of the water-repellent coating film 11.

As is clear from the above performance comparison, in the outer wall material 1 according to the present invention, dirt is replaced by the familiarity between rainwater and the hydrophilic coating film 10, and the water-repellent coating film 11 is combined with the rainwater collecting function. More dirt is washed off and the makeup surface 2
The stain resistance is greatly improved and the weather resistance is also excellent.

[0019]

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 can also have sufficient weather resistance. It has the self-cleaning power to remove stains by the "compatibility" and "repelling" of rainwater due to the synergistic effect of the characteristics of the hydrophilic coating film and the water-repellent coating film. Dirt adhering to the concave pattern will be made to be a beautiful surface by popping up or popping out by familiarizing with rainwater. Since the hydrophilic 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 hydrophilic coating film. 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.

[Explanation of symbols]

 1 Outer wall material 2 Decorative surface 3 Concave pattern 4 Convex pattern 5 Core material 6 Surface material 7 Back material 8 Male type connection part 9 Female type connection part 10 Hydrophilic coating film 11 Water repellent coating film

Claims (1)

[Claims] 1. An outer wall material 1 for vertical or vertical application, wherein a decorative surface 2 is provided with a concave pattern 3 and a convex pattern 4, and one of the concave pattern 3 and the convex pattern 4 is a water repellent coating film. 11. A stain-resistant outer wall material, characterized in that it is coated with 11, and the other is coated with a hydrophilic coating film 10.