JPH11228254A - Decorative light-weight foam concrete panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide ornamental autoclaved light-weight concrete(ALC) that has the coated faces with high ornamental effect of irregular and uneven face exposing the inner foams formed on the surface layer side that can be seen through form the outside as well as shows excellent waterproofs. SOLUTION: In this ornamental light-weight foam concrete panel, an irregular and uneven face 2 having inner foams exposed on the surface of the concrete panel, the water absorption inhibitor coated face 4 are formed in order on the surface of the panel, and finally the surface is finished so that the shape of the uneven pattern face 2 can be seen through the surface layer of the transparent finish coat 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative lightweight cellular concrete panel mainly used for the inner and outer walls of a building, and more particularly, to a concrete panel in which internal bubbles are exposed on the surface layer side by shot blasting or the like. The present invention relates to a decorative lightweight cellular concrete panel having a regular uneven surface, which has excellent waterproofness and a painted surface with a high decorative effect that allows the shape of the irregular surface to be directly seen through from the outside and has a high decorative effect. is there.

[0002]

BACKGROUND OF THE INVENTION Lightweight cellular concrete panels (autoclaved light weight concrete panels ...
ALC panels are hereinafter referred to as ALC panels) because they are more porous than concrete, and therefore have excellent lightness and heat insulation properties, and are widely used for building materials, for example, for the use of inner and outer walls of buildings by utilizing these characteristics. ing.

[0003] Since the ALC panel is used as a surface material of various building materials as described above, in order to enhance its decorative effect, the ALC panel has an irregular surface in which internal bubbles are exposed to the surface layer by shot blasting or the like. In many cases, an uneven surface is formed, and a desired coating is further applied thereon to be put to practical use.

A method for coating an ALC panel on which irregular bubbles are formed by exposing such internal bubbles is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-75553. A method is known in which a silane-based primer as a waterproofing agent is applied to a varnish, and a paint is applied thereon.

However, in the above-mentioned conventional method, since an organic solvent is used as a solvent for the primer, when the water content of the base ALC panel is high, the permeability of the primer is poor and a sufficient waterproof effect is obtained. Not only is not obtained, but also the coating must be applied after the undercoating agent is sufficiently cured, which involves a problem that the processing time becomes long.

Further, in the above-mentioned conventional method, when the paint is applied by a spraying method or a roller method in accordance with the conventional ALC panel coating method, the concave portions of the uneven surface formed on the surface of the ALC panel are not filled. There is also a problem that a portion or a paint pool is generated, the shape of the irregular uneven surface formed by the blast method or the like is lost, and the decorative effect is reduced.

Further, in the above-mentioned conventional method, especially when a transparent paint is used as the paint and it is intended to make the uneven surface formed on the surface of the ALC panel transparent from the outside, the paint is applied to the concave portion of the uneven surface. Because it is not filled enough,
There is a problem in that the shape of the uneven surface cannot be seen through as it is, and only a decorative effect contrary to expectations can be obtained.

[0008] Accordingly, the cosmetic AL has excellent waterproofness and has a painted surface through which the shape of the irregular uneven surface with the internal air bubbles exposed on the surface can be directly seen through from the outside.
The fact is that the realization of the C panel has always been desired.

[0009]

SUMMARY OF THE INVENTION The present invention has been achieved as a result of studying to solve the problems in the prior art described above.

[0010] Accordingly, an object of the present invention is to provide a coating having a high decorative effect, having excellent waterproofness and allowing the shape of an irregular uneven surface exposing internal air bubbles formed on the surface layer side to be seen from the outside as it is. An object of the present invention is to provide a decorative ALC panel having a surface.

[0011]

In order to achieve the above-mentioned object, a decorative ALC panel according to the present invention comprises a light-weight cellular concrete panel, a surface of which has irregular irregularities with internal bubbles exposed, and a surface coated with a water-absorbing agent. , And a transparent paint-coated surface are sequentially formed, and the shape of the uneven surface is finished through the transparent paint-coated surface so as to be transparent.

[0012] In the decorative ALC panel of the present invention, the irregular uneven surface on which the internal air bubbles are exposed on the surface of the lightweight cellular concrete panel is formed by shot blasting, and the surface on which the water-absorbing agent is applied is made of an aqueous resin. It is formed using an emulsion, the resin component of the aqueous emulsion resin is at least one selected from silane resin, silicone resin, urethane resin and acrylic resin, and the transparent paint is acrylic resin Being formed using at least one selected from paint, urethane resin paint, silicone resin paint, acrylic silicone resin paint and fluororesin paint,
The transparent paint coated surface is finished by blowing air to the transparent paint from an air nozzle having a slit-shaped air outlet before the transparent paint is solidified, so that the transparent paint is uniformly applied to the concave portions of the uneven surface. It is filled and formed, and the surface thickness of the transparent paint-coated surface is 0.
A desirable condition is ² kg / m ² or more, and when these conditions are applied, it is possible to expect a better effect to be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and effects of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an enlarged sectional view showing a surface of an example of a decorative ALC panel according to the present invention, and FIGS. 2A to 2D are explanatory views showing a coating method of the decorative ALC panel according to the present invention in the order of steps.

As shown in FIG. 1, the decorative ALC panel according to the present invention comprises, on the surface of an ALC panel 1, an irregular uneven surface 2 exposing internal bubbles, a surface 3 coated with a water-absorbing agent, and a transparent paint. The coating surface 4 is sequentially formed, and the shape of the uneven surface 2 is finished through the transparent coating surface 4 so that it can be seen through from the outside.

That is, the surface 3 coated with the water-absorbing agent is the uneven surface 2
Since the transparent paint-coated surface 4 is uniformly filled in the recesses of the uneven surface 2, the irregular uneven surface 2 formed by shot blast and exposing internal bubbles to the outside is The shape can be seen through the transparent paint coated surface 4 from the outside as it is, and a high decorative effect is exhibited.

The decorative ALC panel of the present invention can be efficiently manufactured by the method described below.

First, an ALC panel is prepared. here,
The ALC panel used in the present invention is a panel-like molded product obtained by adding a known foaming agent and an appropriate amount of water to concrete, kneading, molding, and dewatering, and generally contains about 20% by weight of water. , Whose absolute specific gravity is in the range of 0.6 or less.

In the present invention, first, as shown in FIG. 2A, the surface of the ALC panel 1 having a surface shape composed of flat and regular cut marks by a piano wire or the like is applied.
Apply shot blasting.

Thus, on the surface of the ALC panel 1, as shown in FIG. 2B, an irregular uneven surface 2 exposing internal bubbles to the surface layer is formed.

Next, as shown in FIG. 2C, a water-absorbing agent is applied on the formed uneven surface 2 to form a water-absorbing agent-coated surface 3.

As the water-absorbing inhibitor used in the present invention, it is preferable to use an aqueous resin emulsion containing at least one resin selected from silane resins, silicone resins, urethane resins and acrylic resins.

The term "aqueous resin emulsion" as used herein means a dispersion obtained by dispersing the above resin components in water using an appropriate dispersant, and has a viscosity of 10 dpa. Those having a resin solid content concentration of 3 to 20% by weight or less are preferably used.

As a method of applying the water-absorbing agent composed of the water-based resin emulsion to the surface of the ALC panel 1, a conventionally known brush coating, spray coating, dip coating or the like can be adopted. The thickness is desirably in the range of 0.1 to 5 kg / m ^{2 in} terms of resin solid content.

Here, since the ALC panel 1 easily absorbs water, when an aqueous resin emulsion is used as a water absorption inhibitor, it is not necessary to adjust the water content of the ALC panel 1 itself, and furthermore, the resin component is not required. Can be applied and permeated in a short time, and the working time until the overcoating of the transparent paint in the subsequent coating process can be remarkably reduced. That is, since the ALC panel 1 contains about 20% by weight of water, it has excellent compatibility with the aqueous resin emulsion, and the aqueous resin emulsion permeates the ALC panel 1 quickly. Also, even if water remains in the applied portion, if the transparent paint used in the coating process is a water-based paint, without adversely affecting the waterproof performance and adhesion of the coating film, The drying of the water-absorbing agent can be performed simultaneously with the drying of the transparent paint.

As described above, by using the water-based resin emulsion as the water-absorbing agent, the waterproof performance of the transparent paint-coated surface 4 is supplemented, and the rapid curing of the transparent paint due to the water absorption of the ALC panel 1 is prevented. Further, it is possible to maintain the proper fluidity of the transparent paint and to uniformly fill the recesses of the uneven surface 2 of the transparent paint.

On the other hand, when a resin solution diluted with an organic solvent is used as a water-absorbing inhibitor instead of the water-based resin emulsion, the solvent repels the moisture contained in the panel in advance and evaporates to the outside. In addition to the fact that it takes a long time to dry and has no effect of hardening the panel surface, the same effect as described above cannot be expected.

Subsequently, as shown in FIG. 2 (D), a transparent paint is applied on the water-absorbing agent-applied surface 3 which has been applied and permeated by means of conventionally known brush coating and spray coating. The transparent paint coated surface 4 is formed.

Specific examples of the transparent paint used here include acrylic resin-based paint, urethane resin-based paint, silicone resin-based paint, acrylic silicone resin-based paint, and fluororesin-based paint. Any color may be used as long as it has a performance capable of forming a film. For the above-mentioned reasons, the transparent paint is an aqueous paint using water as a solvent, specifically, a water-dispersed paint in which resin particles are dispersed in water represented by various synthetic resin emulsions, and a polar group having a strong hydrophilicity. It is desirable to use a water-soluble paint in which a resin having the following formula is dissolved in water.

The dry solid content of the transparent paint is 20
It is desirable that the content be not less than% by weight. That is, by setting the dry solid content of the transparent paint to 20% by weight or more,
By drying after filling the inside of the bubble with the transparent paint to the inside of the uneven surface 2, the filling efficiency is increased due to less shrinkage of the paint, so that not only the waterproof property is improved, but also the uneven design is less damaged. However, when the dry solid content is less than 20% by weight, the above-mentioned effect tends to be not obtained. When a solvent-free paint containing no volatile component is used as the transparent paint, the paint has less shrinkage (file), so that a better effect can be obtained.

After the application of the transparent paint, as shown in FIG. 2D, before the transparent paint is solidified, air is blown from the air nozzle 6 having the slit-shaped air outlet 5 onto the transparent paint. By finishing, the transparent paint is uniformly filled in the concave portions of the uneven surface 2 where the internal bubbles are exposed, and the transparent paint coated surface 4 having a substantially uniform surface thickness can be formed.

That is, an air nozzle 6 having a slit-shaped air outlet 5 having a length larger than the width of the ALC panel 1 was used, and the uneven surface 2 was directed upward as shown in FIG. While the air nozzle 6 is horizontally moved in the direction of arrow A in the length direction of the ALC panel 1, air 7 is blown against the transparent paint from the slit-shaped air outlet 5 so that the blown air holds the transparent paint. Since the transparent paint is uniformly filled into the concave portions of the uneven surface 2 because the transparent paint is uniformly arranged and dried and solidified while the surface thickness of the transparent paint is equalized by the wind pressure of the air 7, Thus, the transparent paint coated surface 4 having a substantially uniform film thickness is formed.

Therefore, the formed transparent paint-coated surface 4 has a uniform surface thickness as shown in FIG. 1 and is uniformly filled in the concave portions of the concave-convex surface 2 existing therebelow. Can see through the shape of the uneven surface 2 as it is, and this decorative ALC panel will exhibit an excellent decorative effect.

In the above air blowing step, the distance between the surface of the ALC panel 1 and the slit-shaped air outlet 5 of the air nozzle 6 is 5 to 50 mm, and the distance from the slit-shaped air outlet 5 of the air nozzle 6 is Is preferably 200 mmAq or more.

[0035] However, the transparent paint coated surface 4, it is desirable that the surface thickness to 0.2 Kg / m ² or more impasto, in its thickness is less than 0.2 Kg / m ^2, the interior of the exposed foam Until the paint is no longer filled, it is not preferable.

The cosmetic ALC of the present invention having the above constitution
The panel has a novel decorative effect that has excellent waterproofness imparted by a water-absorbing agent and has a painted surface that allows the shape of the uneven surface that exposes internal bubbles formed on the surface to be seen from the outside from the outside It can be widely applied to uses such as various building materials.

[0037]

The structure and effects of the present invention will be further described below with reference to examples.

By subjecting the surface of the ALC panel having a water content of 20% by weight to a shot blasting process, a surface shape having regular cut marks using a piano wire is used instead of an irregular shape in which internal bubbles are exposed to the outside. A surface shape having a rough surface was formed.

Next, “AQUA SEAL 1100W” manufactured by Sumitomo Seika Co., Ltd. was applied as a water-absorbing agent on the uneven surface of the ALC panel by brush coating at a thickness of 0.3 kg / m ² .

Next, the applied water-absorbing agent was not dried, and "V" manufactured by Dainippon Paint Co., Ltd.
Freon "(dry solid content: 30% by weight) was applied in a thickness of 0.3 kg / m ² by spray coating.

Subsequently, before the applied transparent paint solidifies and loses its fluidity, the transparent paint has a length greater than the width of the ALC panel in the length direction of the ALC panel with the uneven surface facing upward. While moving an air nozzle having a slit-shaped air outlet, air was blown to make the applied thickness of the transparent paint uniform, and then the ALC panel was sufficiently dried. In this case, the pressure of the air blown from the slit-shaped air outlet of the air nozzle is 1,000 mmAq, and the distance between the slit-shaped air outlet and the surface of the ALC panel is 4 mm.
0 mm.

At the time of this air blowing, the transparent paint on the uneven surface of the ALC panel is pressed by air to uniformly fill the concave portions of the uneven surface, and the surface thickness on the uneven surface is 0.1 kg / g.
It was possible to form an almost uniform surface of the transparent paint of m ² .

The thus obtained decorative ALC panel has excellent waterproofness, and has an irregular uneven shape exposing internal air bubbles formed on the surface thereof.
It was transparent from the outside through the transparent paint-coated surface, and exhibited a new decorative effect.

[0044]

As described above, the cosmetic AL of the present invention
The C panel has excellent waterproofness imparted by a water-absorbing agent, and is formed by uniformly filling a concave portion of a concave and convex surface exposing internal bubbles formed on the surface thereof with a transparent paint. Has a high decorative effect, which can be seen through the transparent paint-coated surface from the outside as it is, so that it can be widely applied to various uses such as building materials.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a surface showing an example of a decorative ALC panel of the present invention.

FIGS. 2 (A) to 2 (D) are explanatory views showing a method of applying a decorative ALC panel according to the present invention in the order of steps.

[Explanation of symbols]

 Reference Signs List 1 ALC panel 2 Uneven surface 3 Water-absorbing agent-coated surface 4 Transparent paint-coated surface 5 Slit-shaped air outlet 6 Air nozzle 7 Air

Continuation of the front page (72) Inventor Osamu Yamada 2035 Shimoi-machi, Shioi-machi, Owariasahi-shi, Aichi Prefecture Inside Onoda ALC Co., Ltd. Onoda ALC Co., Ltd.

Claims (7)

[Claims] Claims: 1. A lightweight cellular concrete panel is provided with an irregular irregular surface on which internal cells are exposed, a surface coated with a water-absorbing agent, and a surface coated with a transparent paint, which are sequentially formed on the surface of the lightweight cellular concrete panel,
A decorative lightweight cellular concrete panel, characterized in that the shape of the irregular surface is finished as it is through the transparent paint-coated surface. 2. The decorative lightweight cellular concrete panel according to claim 1, wherein the irregular irregular surface on which the internal cells on the surface of the lightweight cellular concrete panel are exposed is formed by shot blasting. 3. The lightweight lightweight cellular concrete panel according to claim 1, wherein the water-absorbing agent-coated surface is formed using an aqueous resin emulsion. 4. The cosmetic according to claim 3, wherein the resin component of the aqueous emulsion resin is at least one selected from a silane resin, a silicone resin, a urethane resin and an acrylic resin. Lightweight cellular concrete panels. 5. The transparent paint is formed using at least one selected from an acrylic resin paint, a urethane resin paint, a silicone resin paint, an acrylic silicone resin paint and a fluororesin paint. The decorative lightweight cellular concrete panel according to any one of claims 1 to 4, characterized in that: 6. The transparent paint-coated surface is finished by blowing air to the transparent paint from an air nozzle having a slit-shaped air outlet before the transparent paint is solidified, so that The decorative lightweight cellular concrete panel according to any one of claims 1 to 5, wherein the transparent paint is formed by being uniformly filled. 7. The method according to claim 1, wherein the surface thickness of the transparent paint-coated surface is 0.2 kg / m ² or more.
7. The decorative lightweight cellular concrete panel according to any one of items 6 to 6.