JPH04110069A - Production of wall panel with metallic surface pattern finish - Google Patents

Abstract

PURPOSE:To obtain a matted gloss surface of multi-phase alloy tone by preparing plural coating liquids by separately mixing plural kinds of metal powders with respective synthetic resin emulsions, and simultaneously apply these coating liquids from respective plural spraying devices on the wall of a structure. CONSTITUTION:Plural coating liquids are separately prepared by mixing plural kinds of metal powders (e.g. Al, iron, copper, tin, brass powder) with synthetic resin emulsions, water-soluble resin liquid or solvent type resin liquid. These coating liquids are separately and simultaneously applied from respective plural spraying devices on the wall of a structure. During coating, the liquids are applied so that the sprayed surface for each liquid is almost same for plural spraying devices to form a metallic surface pattern on the wall. Thereby, a monotonous metallic tone is avoided but a matted gloss surface of multi-phase alloy tone can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides a method for applying coating liquids containing two or more types of metal fine powder separately using separate coating sprays.
The present invention relates to a method of manufacturing a wall surface with a metal surface pattern finish by coating the wall surface of a building or a wall surface portion of a building component such as a precast concrete plate.

(Conventional technology) When finishing the walls of modern buildings, especially the exterior walls, with a metallic finish, metallic luster has traditionally been used. Stainless steel plates and aluminum plates have been used as decorative materials. These metal reflector wall surfaces are well suited to modern sensibilities and are consistent with urban spaces, and have come to be preferred. However, these metal materials are expensive and the construction costs are also high, which limits their use. As for other methods.

There is a method of painting concrete walls, etc. by spraying a coating solution prepared by mixing fine powder of metallic aluminum with a synthetic resin emulsion.The diffused reflection of light on the surface of fine aluminum particles creates a matte white metallic finish. This gives the appearance of

This method is excellent because it can be easily applied to the wall surface of an existing building to easily obtain a metallic building appearance.

In addition, some coating techniques for the walls of buildings include mixing fine powder of ceramic materials or natural stone with synthetic resin emulsion.
There is a method of applying the mixture by spraying, and in particular, three types of ceramic powders of different colors are separately mixed into a synthetic resin emulsion and simultaneously applied to the wall using a three-tube sprayer. As a result, porcelain colors provide a patterned or finished surface that simulates natural stone.

(Problems to be Solved by the Invention) The finishing method for walls, which involves spraying or painting a synthetic resin emulsion containing fine aluminum powder, produces a matte metal surface, but results in a monotonous appearance, which is uninteresting as a design. Also, if the three-tube spray paint has a ceramic pattern, the wall surface will not have a metallic look, of course.

The present invention is directed to a method for producing a wall surface with a metal surface pattern finish, and aims to avoid a monotonous metallic tone and provide a method for obtaining a deep and complex matte glossy surface similar to that of a multiphase alloy. It is something to do.

(Means for solving the problem) The method for manufacturing a wall surface with a metal pattern finish of the present invention involves mixing a plurality of types of metal powder separately into a synthetic resin emulsion, a water-soluble synthetic resin liquid, or a solvent-based synthetic resin liquid. These coating solutions are simultaneously applied to the walls of the building using different spray devices for each coating solution, so that the spray surfaces of each coating solution on the wall surface coincide and overlap. In this way, a metal surface pattern is formed on the wall surface, and the wall surface is finished and manufactured.

Further, this coating method is used for the wall surface portion of a member constituting a building to produce a building component having a wall surface portion finished with a metal pattern.

The configuration of the present invention will be explained in detail below.

In the wall manufacturing method of the present invention, two or more types of metal powders are exclusively used.

Aluminum, iron, stainless steel, chrome, copper.

It is a powder of tin, zinc, bronze, or brass, and all metal powders must have an unoxidized surface with a metallic luster. Sometimes fine gold or silver powder is also used, although it is more expensive.

The particle size of the metal powder must be in the range of 20 to 300 mesh, and if the particle size is coarser than 20 mesh, the metal particles will settle in the mixed emulsion, lower the viscosity of the emulsion, and increase the density. It requires the addition of a chemical agent and also causes problems in spraying from the nozzle. Also,
If the particles are finer than 300 ml, the diffused reflection of light from the metal powder on the coated surface becomes uniform5, resulting in a loss of metallic luster and the entire coated surface becomes a monotonous white or gray color, resulting in a metallic pattern. I can't.

Synthetic resin agents to which metal powder is mixed include: 1) Synthetic resin emulsions include emulsions of vinyl, acrylic, urethane, or fluorine-based polymers; solvent-based synthetic resin liquids include urethane-based, fluorine-based acrylics, etc. Modified silicone-based, epoxy-based, polyester-based, or polypropylene-based uncured resins are used. In particular, non-yellowing one-component moisture-curing urethane resins are used as urethane-based synthetic resins, and they also have gloss retention properties and resistance to changes over time after application.
Fluorine-based resins are preferably used from the viewpoint of stain resistance and durability. As the water-soluble synthetic resin liquid, an acrylic, urethane, or fluorine resin liquid is used.

Prior to application to the wall surface, two or more types of the above metal powders are
They are not mixed, but are added separately to any of the above synthetic resin agents of the same type and mixed to prepare a coating liquid.

In preparing the coating solution, it is important to adjust the viscosity; if the viscosity is less than 3000 cps, the coating solution has good fluidity and the coating droplets applied to the wall surface are well uniformed on the coating surface. For mixing.

It doesn't look like a pattern. Moreover, the coating liquid flows on the wall surface, and the coating thickness is not uniform. The coating liquid must have properties such that droplets stick to the coating liquid layer on the coating surface but do not mix uniformly, and smooth the coating surface but do not flow on the coating surface. If the viscosity of the coating solution is too low, a thickener is added to ensure a viscosity of preferably about 8000 cps.

Each coating liquid uses the same number of sprays as the number of coating liquids, is stored in each container of these sprays, and is simultaneously sprayed from the nozzle of each spray toward the wall surface using compressed air. At this time, it is important that the respective injection surfaces on the wall surface coincide and overlap. By moving the nozzle of each spray without shifting the overlapping of the spray surfaces, the entire coating surface can be coated in a constant manner.

As an element that determines the roughness of the metal surface pattern on the wall,
There is a spray aperture and air pressure.The larger the spray aperture or the lower the air pressure, the rougher the pattern will be.Therefore, the coarseness of the pattern is predetermined by the spray aperture, and at heavy fabric sites, the air pressure Adjust. The amount of application per unit time is similarly determined by the spray aperture and air pressure.

The wall surfaces to which the coating liquid is applied and the metal surface pattern is to be applied include not only existing or newly constructed concrete or cement mortar surfaces, but also plaster,
These include fiber-reinforced cement mortar walls, cellular lightweight concrete walls, and steel plates. When applying to steel plate,
As a base treatment, apply epoxy paint. In addition, precast concrete boards, gypsum boards, fiber-reinforced cement mortar board walls, aerated lightweight concrete panels,
When applying to express a metal surface pattern, before on-site assembly,
A large amount of the above molding material can be coated in a factory, and in this case, a solvent-based synthetic resin agent is used to coat the molding material.
It can be heated and forced dry. The molded material with the metal surface pattern displayed on the finished surface is transported to the site and assembled once.

The interior and exterior walls of the building are obtained.

(Function) The metal powder is mixed with a synthetic resin liquid or a synthetic resin emulsion, applied to the wall surface, and is fixed to the wall surface in the synthetic resin layer by curing of the synthetic resin, and the synthetic resin layer has translucency. Therefore, light incident on the surface of the metal powder is diffusely reflected, giving the entire synthetic resin layer a metallic tone.

Two or more types of metal powders are separately mixed in a synthetic resin liquid or the like, contained in separate coating liquids, and simultaneously sprayed onto a wall surface. Each injection liquid contains different types of metal powder, and the injection surfaces are injected so that they coincide and overlap each other on the wall surface. Therefore, these metal powders are mixed with each other because they are injected and adhere to each other. In the second case, the droplets ejected from the spray nozzle are not uniform spatially during injection, so the concentration of each metal powder is not uniform on the wall surface that is the injection surface. Instead, flat shading occurs.

Metal powders have different reflectances depending on their type and surface properties, so areas on a wall where there is a high concentration of metal powder with high reflectance will shine brightly, and conversely, areas where there is a high concentration of metal powder with low reflectance will shine. In some parts, it gets dark. Therefore, the difference in concentration and reflectance of each metal powder causes the metallic luster to vary in density, resulting in an irregular pattern.

However, in areas where the injection surfaces of the walls of the respective injection liquids do not match and do not overlap with each other, the injection liquids do not mix, so the above-mentioned shading pattern does not appear, resulting in a monotonous metallic tone. Therefore, it is important that the injection surfaces are generally aligned without any deviation.

Metal powders have different reflectances as well as different colors of reflected light; aluminum powder and stainless steel powder are white, chrome powder is bluish, copper powder is red, and so on! I stands for cream color, and brass ranges from reddish yellow to golden yellow, so by appropriately selecting a combination of two or more metal powders, a colored metal surface pattern can be formed on the wall surface.

(Example) Examples of the present invention are shown below.

[Example 1] A finished wall surface forming a metal surface pattern was manufactured on the concrete outer wall surface of an existing building.

The metal powders include A: Aluminum powder (manufactured by Daiyani Co., Ltd., particle size 80 mesh), B: Stainless steel powder (manufactured by Daiyani Co., Ltd., particle size 200 mesh), and C: Nickel powder (Daiyani Co., Ltd., particle size 200 mesh). ), particle size 200 mesh) 3
Prepared types. These three types of metal powders A, B, and C were separately added to an acrylic acid ester resin emulsion (Product name: Acronal, manufactured by Yuka Badish Co., Ltd., resin solid content 50%) at a ratio of 1 weight to 1% of the metal powder. To 100 parts, 200 parts of the above resin emulsion and 50 parts of water were mixed and stirred, and a 2% solution of methyl cellulose was added as a thickener to adjust the viscosity, and a mixture containing metal aluminum was added. Coating liquid A, which is also made of stainless steel powder, B
A solution C of nickel powder was prepared.

The spray used for application was a special type called a three-tube sprayer, with a container at the top and a spray gun body directly below it. This sprayer has a structure in which a compressed air pipe is inserted into a mixing chamber that communicates with the lower outlet part of the sprayer, and three independent sprayers are connected in a row at right angles to the injection direction. be. The three-tube sprayer has the direction of each nozzle adjusted so that at a position of approximately 60cm+* from the nozzle, each spray surface overlaps a single circle of approximately 60cm and is approximately evenly distributed. There is.

1.5Q of each of the above prepared coating solutions was injected into each of the three spray containers without mixing, and an air pressure of 4 kg was supplied to the mixing chamber using a spray nozzle with an inner diameter of 3IIll. The above wall surface was sprayed under the conditions of /aI. The amount of air was adjusted so that the coating weight ratio of each coating solution was approximately 4 parts of aluminum powder, 4 parts of stainless steel powder, and 2 parts of nickel powder. The amount of coating liquid is approximately 1kg/m, 15rr? It was applied to the wall of

Immediately after coating, the coating liquids were fixed on the coated surface without running down or mixing with each other.

It was left in this state for one day to dry and harden.

After curing, the coated surface of the wall surface has bright shine in areas rich in aluminum powder, dark areas rich in nickel powder, and intermediate shine in areas rich in stainless steel powder.As a whole, the surface of the multiphase alloy Under direct sunlight, the fine aluminum powder flickers and shines, especially against a black background, giving it a luxurious impression not seen on conventional metal walls.

The coated finished surface of the wall surface after curing was generally flat and sufficiently smooth for a wall surface. Further, as a result of measuring the coating thickness after curing, the average thickness was 3 m.

[Example 2] Colored metal powder was applied to the outer wall of an existing building to produce a wall with a colored metal surface pattern.

The metal powders used were A: Copper powder (2 grain size 2o-200 mesh manufactured by Daiyani Co., Ltd.), B: Bronze part (Daiyani Co., Ltd.)
Co., Ltd., bronze flake powder, particle size 20-20
0 mesh), and C: Brass powder (manufactured by Daiyani Co., Ltd.,
There were three types with particle sizes ranging from 20 to 200 mesh.

To prepare the coating solution, a solvent-type room-temperature-curing fluororesin (manufactured by Central Glass Co., Ltd., product name: Cefral Coat Clear) is used.To 100 parts of this room-temperature-curing fluororesin, 50 parts of toluene as a solvent, 25 parts of methyl isobutyl ketone,
Solution A of the coating solution containing copper powder is prepared by mixing 25 parts of n-butyl acetate, 8 parts of hexamethylene diisocyanate as a hardening agent (both manufactured by Central Glass Co., Ltd.), and 80 parts of the above metal powder. Similarly, B solution for the bronze part.

A solution C of brass powder was obtained.

When applying the above wall surface, the said A
Inject each liquid, B liquid, and C liquid, and the injection aperture diameter is 3 mm.
Under an air pressure of 4 kg/cm2, approximately equal amounts of the three liquids were
At the same time, spray so that the spray surfaces roughly match and overlap,
Approximately 80m2 of wall surface was coated.

After application, leave it at room temperature, and the coating solution will be completely cured after 8 days, and the appearance of the wall surface will be as follows: Part of the copper powder is reddish-brown, part of the bronze part is yellow-brown, and part of the bronze part is yellowish-brown. It was yellow in color, and when viewed from a distance, it showed a rich variety of rich shades of golden yellow.

[Example 3] A cement mortar board for the exterior wall of a building was molded, and a resin liquid mixed with colored metal powder was applied to the wall surface of the molded board.
We produced a wall with a metal surface pattern finish.

The cement mortar board was made by mixing and kneading 100 parts of Portland cement, 300 parts of No. 6 silica sand, 40 parts of acrylic acid ester resin emulsion (5 product names: Acronal, manufactured by Yuka Bade Sonyu Co., Ltd., resin solid content 50%), and 30 parts of water. After adjusting the viscosity by adding sodium ligninsulfonate, it was placed in a mold of 90 cm x 120 cm with a thickness of about 6 cm.
The coating solution 5, which was injected and molded by air drying and curing to a thickness of ,
Although it is a solvent-based room temperature curing fluororesin, the difference is that instead of 8 parts of isocyanate as a hardening agent, 3 parts of hexamethylolmethylated melamine (manufactured by Central Glass Co., Ltd.) is used, and the resin liquid is heated. It was used as a hardening type.

One side of this cement mortar board that was in contact with the bottom of the formwork was coated with liquid A, liquid B, and
Each of the liquids was simultaneously sprayed and applied using the three-barrel sprayer described above. After application, heat to approximately 150℃ using a hair dryer.
30 minutes after application, the coating solution was dried and hardened.

The coated wall surface after drying and hardening has a luxurious golden shine. By this method, a cement mortar board as a building component having a metal surface pattern finish wall surface can be molded. By pasting the mortar board onto the existing rough concrete wall surface with adhesive resin mortar, it was possible to create a finished wall surface.

(Effects of the Invention) By carrying out the method of manufacturing a wall surface with a metal surface pattern finish according to the present invention, the following effects can be achieved.

Unconventional, varied, and luxurious interior or exterior walls of existing or newly constructed buildings.

It is possible to easily form a finishing decoration of a metal surface pattern that exhibits luster and shine.

By freely selecting the combination of metal powders, it is possible to form metal patterns with various variations on the wall surface, and by using chromatic metal powders, the wall surface can be colored with luster and shine. By changing the type of metal powder used for each position on the wall surface to be coated, it is also possible to create a large pattern with a metallic luster.

Finishing decorations with metal surface patterns can be easily and abundantly formed on building components and wall materials such as precast concrete plates, cement mortar molded plates, aerated lightweight concrete panels, and steel plates in advance at the factory manufacturing stage. By transporting the above members with such finishing decorations to a construction site and assembling them, it becomes possible to form finishing decorations with metal surface patterns on the inner and outer walls of a building.

that's all

Claims (1)

[Scope of Claims] 1. A plurality of coating liquids each made by separately mixing a plurality of types of metal powders into a synthetic resin emulsion, a water-soluble synthetic resin liquid, or a solvent-based synthetic resin liquid, each of which is different for each coating liquid. A metal surface that is simultaneously coated onto a wall surface of a building from a spray device such that the spray surfaces of each coating liquid on the wall surface generally coincide and overlap to form a metal surface pattern on the wall surface. A method of manufacturing a patterned wall surface. 2. Constructing a plurality of coating liquids each consisting of a plurality of types of metal powder mixed separately with a synthetic resin emulsion, a water-soluble synthetic resin liquid, or a solvent-based synthetic resin liquid using a plurality of spray devices different for each coating liquid. Forming a metal surface pattern on the wall surface by applying the liquid simultaneously to the wall surface of the member that constitutes the object, and at the time of application, the spraying surfaces of each coating liquid on the wall surface portion generally coincide and overlap. A method for manufacturing a building component having a wall portion finished with a metal surface pattern. 3. The method for manufacturing a wall surface with a metal surface pattern finish according to claim 1 or claim 2, wherein the metal powder is aluminum, iron, stainless steel, chromium, nickel, ferroalloy, copper, tin, zinc, bronze or brass powder. A method for manufacturing a building component having a wall portion finished with a metal surface pattern as described above. 4. The method for manufacturing a wall surface finished with a metal surface pattern according to claim 1, or the method for manufacturing a building component having a wall surface finished with a metal surface pattern according to claim 2, wherein the particle size of the metal powder is in the range of 20 to 300 mesh. 5.Synthetic resin emulsion is vinyl-based, acrylic-based,
The method for manufacturing a wall surface finished with a metal surface pattern according to claim 1, or the method for manufacturing a building component having a wall surface portion finished with a metal surface pattern according to claim 2, wherein the emulsion is an emulsion of a urethane-based or fluorine-based polymer. 6. The method for manufacturing a wall surface with a metal surface pattern finish according to claim 1 or claim 2, wherein the solvent-based synthetic resin liquid is an uncured resin of urethane type, fluorine type, acrylic modified silicone type, epoxy type, polyester type or polypropylene type. A method for manufacturing a building component having a wall portion finished with a metal surface pattern as described above. 7. The method for producing a wall surface finished with a metal surface pattern according to claim 1, or the building having a wall section finished with a metal surface pattern according to claim 2, wherein the water-soluble synthetic resin liquid is an acrylic, urethane, or fluorine resin liquid. Method for manufacturing component parts.