JPH059587B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for applying a mixed material used for surface treatment of buildings, etc.

[Prior Art] The term "building" as used herein includes not only ordinary buildings but also building materials used in construction, such as blocks.

Traditionally, natural stone has been often used as a finishing material for the exterior walls of buildings due to its aesthetic appearance and weather resistance. For example, there is a method of making granite or marble into a thin plate shape and pasting it to an external wall or the like.

However, natural stone is very scarce these days, and much of it has to be imported, making it expensive due to transportation costs and other factors. Of course, there are domestically produced ones, but they are more expensive. In addition, because it is made into a thin plate shape, it is difficult to manufacture and raw materials are wasted, which also contributed to the price increase.

Therefore, as an alternative to this, various finishing materials for exterior walls, floors, columns, interior walls, etc. of buildings have been invented and used.

Conventional methods for applying building finishing materials to exterior walls and the like include troweling methods, roller methods, and spraying methods. The troweling method is an old method in which the finishing material is applied using a trowel. In the roller method, a roller is used instead of a trowel, and by providing unevenness on the roller, it is possible to apply the coating in a certain degree of three-dimensionality. The spray method uses the power of compressed air to spray from a spray gun.

Even in these various methods, since the beauty of natural stone is excellent, efforts are made to create an appearance similar to that of natural stone.

[Problems to be Solved by the Invention] However, the above conventional method has the following drawbacks.

In traditional spraying methods, the finish material is placed in the only tank of the spray gun and sprayed, so even if the mixed material is adjusted to various colors, the result is a single mixed color that looks like natural stone. It is difficult to achieve a perfect color tone. Because it is a colored aggregate, it does not completely mix into one color like paint, but since it is ejected from a spray gun, which is a small nozzle, the aggregate itself is very small, and the color is almost uniform. Put it away. Therefore, it is far from the appearance of natural stone.

Spray guns having multiple tanks have also existed. However, with this gun, paint and coagulant are held in separate tanks, and the paint is sprayed from two nozzles to condense where it is applied, thereby preventing condensation within the tank. Therefore, this is a single material that is used for very different purposes, and in this method,
The above drawbacks cannot be overcome in any way.

In addition, double spraying, in which one color is sprayed and then another color is sprayed on top of it again, will cause the finishing material to overlap in that area and only the color of the last applied color will appear. It becomes almost one color.

In the end, it was not possible to achieve the appearance of natural stone using conventional finishing materials.

Therefore, in the construction industry, etc., there has been a long-awaited building finishing material that exhibits the same aesthetic appearance as natural stone and can be manufactured easily and at low cost.

[Means for Solving the Problem] In view of this situation, the inventor of the present invention provided a spray gun with a plurality of tanks and spray nozzles, filled each tank with materials adjusted to different colors, and created a system in which the materials were mixed in the tank. They invented a method to apply each material from each nozzle without causing any problems.

The feature is that multiple types of mixed materials of different colors, which are made by mixing moderately crushed natural stone mixed into synthetic resin, are prepared in separate tanks within one spray gun. The seed mixture is simultaneously sprayed from separate spray ports of a multi-head spray gun having a plurality of spray ports, thereby applying the seed mixture in a non-mixed, multi-colored manner.

The term pulverization used here refers to pulverizing into fine particles, and does not necessarily mean pulverizing into powder.The size of the pulverized material is approximately 20 mm in diameter.

The mixed material is made by pulverizing natural stone to show an appropriate particle size distribution, or by mixing various types of pulverized stones to show an appropriate particle size distribution, and then mixing this into synthetic resin. .

The synthetic resin used in the present invention is preferably an emulsion type resin, and the most preferred is an acrylic emulsion. Of course, other emulsion-based, epoxy-based, and urethane-based materials can also be used.

The method for producing the aggregate according to the present invention involves simply pulverizing natural stone.

This is the gist of the mixed material used in the method of the present invention, which includes a thickener to improve workability, a PH regulator to protect the container during storage (rust prevention), and an antifoaming agent. Agents, etc. may also be added.

Non-mixed multicolor coating means that mixed materials of different colors are applied so that the colors do not mix with each other.

Since the method of the present invention involves simultaneous spraying from separate spray ports, it is difficult to apply with a single-head spray gun.

[Example] First, a method for producing the mixed material used in the present invention will be described. The following example is the components of one embodiment of the mixture.

(1) 61.60 parts of crushed natural stone (2) Acrylic emulsion (50% solids)
25.20 parts (3) Thickener (Hydroxymethylcellulose)
11.35 parts (4) PH adjuster (ammonia water) 0.17 parts (5) Antifoaming agent (alcohol-based) 0.03 parts (6) Film-forming agent (alcohol-based) 0.39 parts (7) Water 1.26 parts are parts by weight. be. The film forming aid is used to lower the temperature of forming a transparent film of the emulsion.

In this example, a viscosity agent, a PH regulator, an antifoaming agent, a film-forming aid, etc. are mixed in for ease of workability and storage, but these are not necessary and are essential components of the present invention. Not an element.

Next, the particle size distribution of the aggregate can be freely selected depending on the expression of the pattern, but in view of its strength and aesthetics, the following particle size distribution was adopted in this example.

Mesh distribution 3 to 12 60 (Wt%) 12 to 20 30 (〃 ) 20 to 50 10 (〃 ) If such a particle size distribution is adopted, the finished material will have high crack strength, excellent weather resistance, and extremely It has an appearance similar to natural stone.

Since natural stone is crushed and used, it is better to have a larger particle size than those with artificially added pigments. This is because color does not easily come out and to make the best use of the striped patterns, dotted patterns, etc. that natural stones have.

Next, an example of the surface of a building coated with a mixed material by the method of the present invention will be described in detail based on an example shown in the drawings. FIG. 1 is a plan view of the coated exterior wall of a building. In this example, a mixed material made from crushed natural stone in three colors (black, gray, and white) is applied in an unmixed multicolor form. Natural stones are a mixture of various colors, so even if you say three colors, it means that stones with similar colors were collected.

Especially in this example, it is applied randomly. Because it is applied randomly rather than regularly, its appearance is almost the same as that of so-called black granite, and is extremely beautiful.

FIG. 2 is a partially enlarged view of FIG. 1. The black part 1a, gray part 1b, and white part 1c of the finishing material are each composed of black fine particles 2a, gray fine particles 2b, and white fine particles 2c. However, to the human eye, each fine particle is hardly noticed, and the colored part 1
Since a, 1b, and 1c are recognized as one body, the appearance is similar to that of natural stone.

In this example, three colors are used, but it is of course possible to use two colors or four or more colors.

In this way, the colors will not be mixed in the tank and become one color, but will be applied as multiple colors.

FIG. 3 shows an embodiment of a spray gun used in the method of the invention. Material A4a, material B4b, and material C4c are put into tanks 3a, 3b, and 3c, respectively. These materials are entrained by compressed air and are injected from injection nozzles 5a, 5b, and 5c.

In this case, the angle of each injection nozzle is adjusted so that the injection nozzle concentrates on approximately one point. but,
If you actually concentrate on one point, the effect will be diminished because the three colors will be mixed or layered to form a single color. Therefore, the focus of each injection nozzle is slightly shifted. However, in reality, even if the focus is exactly the same, it does not cause much of a problem because the distance and angle from the wall etc. will be different because the person uses the spray gun to spray by hand.

In this example, a method using a three-head type spray gun was shown, but this method can be applied to any number of spray guns depending on the number of colors of the finishing material, etc.

[Effects of the Invention] In the conventional method of mixing materials of multiple colors in one tank in advance, the spray unit (one lump sprayed from the spray nozzle) itself is mixed, but with the coating method of the present invention, For example, since the sprayed units are separate, they are not mixed, and a relatively large area of the same color is created, giving an appearance almost similar to natural stone. This is the most important feature of the present invention, and can only be achieved by not mixing materials of different colors in the tank.

Furthermore, in the conventional one-tank method, before the materials are put into the tank, a predetermined amount is adjusted, mixed,
Must be stirred. In the method of the present invention, there is no need for color adjustment within the same tank, so there is no need for that effort.

Also, compared to conventional double spraying (a method of spraying one color as described above and then partially spraying another color on top of it), double spraying requires spraying twice with a spray gun; The method of the invention requires only one spraying.

Also, since it is made of natural stone and synthetic resin, it can be applied a little thicker and the surface polished flat with a grinder.

Furthermore, compared to natural stone, there is no waste of materials and all materials can be used.

In addition, ceramics fired with pigments that the inventor has already invented and applied for a patent are used as aggregates.
In a building where a mixture of synthetic resin is applied in an unmixed multi-colored manner, each component part has a single color, but since the present invention uses natural stone, the particles themselves The stone has natural patterns and subtle differences in color, making the finished product more similar to natural stone.

Since crushed natural stone is used as the aggregate for the finishing material used in the present invention, it has excellent weather resistance and is comparable to conventional natural stone. In addition, the aesthetic appearance is a very important element of the appearance of buildings, but in the present invention, since the color is the same as that of natural stone, the color etc. are naturally the same as natural stone, and vice versa. Furthermore, depending on the mixture, it is possible to express artificial patterns that are completely different from those of natural stone.

Also, if you apply the above to blocks, PC boards, wall boards, etc., you can simply paste them on site.
This allows buildings to be built that look just like natural stone. When applied to building materials in this way, the construction period can be significantly shortened because the coating can be done in advance at a factory or the like. It is also less affected by weather such as rain.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the surface of a building coated by the method of the present invention, and FIG. 2 is a partially enlarged view thereof. FIG. 3 is a perspective view showing an embodiment of a spray gun used in the method of the present invention. 1a...black part, 1b...gray part, 1c...white part, 2a...black fine particles, 2b...gray fine particles, 2
c...white fine particles, 3a, 3b, 3c...tank,
4a, 4b, 4c...material, 5a, 5b, 5c...
...Injection nozzle.

Claims (1)

[Scope of Claims] 1. A plurality of types of mixtures of moderately crushed natural stones mixed in synthetic resin with different colors are prepared in separate tanks within one spray gun, and the plurality of 1. A method for applying a mixed material, characterized in that the seed mixed material is applied in a non-mixed multicolor form by simultaneously spraying the mixed material from separate spray ports of a multi-head spray gun having a plurality of spray ports. 2. The method for applying a mixed material according to claim 1, wherein the multi-head spray gun is a three-head type. 3. The method for applying a mixed material according to claim 1 or 2, wherein the synthetic resin is an acrylic emulsion.