JP2001348286A - Method for decorating building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building material decoration method by which a building material having semitransparency and deeper appearance can be obtained without adversely affecting advantages of the coated surface with a clear coating material, such as good blocking resistance. SOLUTION: This method comprises subjecting the surface of a building material to color coating and thereafter, subjecting the color-coated surface of the building material to clear coating, wherein in the clear coating stage, the color-coated surface of the building material is coated with a clear coating material containing KANSUISEKI (white Japanese marble) powder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of decorating a building material, and more particularly to a method of decorating a building material such as a fiber reinforced cement board with a colored paint.

[0002]

2. Description of the Related Art Building materials such as fiber-reinforced cement building materials are:
If left as it is, the surface is flat and the color is gray-white to gray-black, achromatic, and thus poor in design.

[0003] Therefore, this kind of building material is often coated with a colored coating on the surface, and as such a coating means, a colored coating is applied to the surface of the building material, and a clear coating is applied to impart design and coating durability. Is widely practiced.

[0004] In the case of applying a decorative coating by the above means, if only the clear coating is used, the coating strength is low, and the coating is crushed and deformed during packing and loading of products, and blocking such as adhesion of interleaving paper is caused. In order to solve such a problem and to improve the design of the painted surface, colored silica sand, colored mica, colored resin beads and the like are added to the clear paint as an aggregate.

[0005] In addition, the addition of the aggregate also has a secondary effect such as quicker drying of the clear coating film. Particularly, when a flat surface is painted with a clear paint to which no aggregate is added,
There is also an advantage that generation of minute air bubble marks, which often appear in the coating film before drying, can be almost completely prevented, and defects in the coating film can be eliminated.

[0006]

However, the finished surface of the clear coating by adding the above-mentioned aggregate does not have a slightly transparent and deep appearance as seen on the surface of natural stone, although the aggregate is scattered. There is a problem that it is difficult to achieve only a flat and monotonous appearance.

The present invention solves the above-mentioned problems, and develops a cosmetic method for a building material capable of having a translucent surface and a deeper appearance without impairing the above-mentioned advantages such as blocking resistance, etc. The task was to do.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a method for decoratively applying a building material, wherein the surface of the building material is colored and then the clear coating is applied to the surface of the colored coating. It is characterized by being painted with a paint.

[0009] Here, cold water stone is a kind of marble and is a naturally occurring crystalline limestone, which has a pure white to green-gray appearance and often has a striped pattern. In the present invention, among these, those exhibiting pure white to white are preferably used, and more preferably those having translucency are used.

Therefore, the transparency of the coating film is not lost despite the addition of the aggregate. Furthermore, since it is a natural aggregate, the addition of powder maintains the strength and blocking resistance of the coating film.

According to a second aspect of the present invention, in the above-mentioned invention, the particle size of the hydrated water powder is 50 to 150 μm. The reason for setting the particle diameter in the range of 50 to 150 μm is that pulverization smaller than 50 μm takes too much time and is expensive, but the effect of imparting transparency by pulverization cannot be expected much more and is wasted. Also, particles larger than 150 μm may cause clogging of the spray nozzle, resulting in poor coating workability.

In the above range, the particle diameter which can be efficiently applied by spraying or the like and which can provide a suitable transparency is preferably about 75 μm. According to a third aspect of the present invention, in the above method, the amount of the hydrated water powder added to the clear paint is 5 to 30 parts by mass based on 100 parts by mass of the paint.

If the amount is less than 5 parts by mass, properties such as transparency and anti-blocking properties cannot be obtained. Also, 3
If the amount is more than 0 parts by mass, even if the powder particle diameter is small, clogging occurs in the spray nozzle used in the coating process, and the coating workability deteriorates.

According to a fourth aspect of the present invention, there is provided a method for decorating a building material according to the above invention, wherein a colored aggregate is added to the clear paint. When the colored aggregate is mixed with the fluorite powder that imparts a transparency, the transparency is emphasized, and the cosmetic effect is enhanced.

[0015]

Next, an embodiment of the present invention will be described. A fiber reinforced cement board having a width of 45 cm and a length of 180 cm was prepared, and an ivory enamel paint was applied to the surface thereof and dried.

The coated fiber reinforced cement board was used as a sample board and painted with the following clear paint. Example 1 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and uniformly mixed to prepare a clear paint.

The clear paint is applied to the surface of the coated fiber reinforced cement board by a spray device at an application amount of 10 g /
It was coated to a thickness of ² to 25 μm and dried. Example 2 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and 1 part by mass of colored mica having an average particle size of 100 mesh was added and uniformly mixed to prepare a clear paint.

The clear paint was spray-coated and dried on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1. Example 3 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and 4 parts by mass of colored mica having an average particle size of 100 mesh were added and uniformly mixed to prepare a clear paint.

The clear paint was spray-coated on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1 and dried. Example 4 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and 10 parts by mass of colored No. 8 silica sand were added and uniformly mixed to prepare a clear paint.

The clear paint was spray-coated on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1 and dried. Comparative Example 1 4 parts by mass of colored mica having an average particle size of 100 mesh was added to 100 parts by mass of the clear paint, and the clear paint was prepared by uniform mixing without adding the hydrated water powder.

This clear coating was spray-coated on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1 and dried. Comparative Example 2 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and uniformly mixed to prepare a clear paint.

This clear paint was spray-coated and dried on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1. Comparative Example 3 The average particle size was 75 μm with respect to 100 parts by mass of the clear paint.
Was added and uniformly mixed to prepare a clear paint.

This clear coating was spray-coated on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1. Comparative Example 4 The average particle size was 150 μm with respect to 100 parts by mass of the clear paint.
20 parts by mass of chilled stone powder was added and uniformly mixed to prepare a clear paint.

This clear coating was spray-coated on the surface of the coated fiber-reinforced cement board in the same manner as in Example 1.
Tables 1 were obtained when the appearances of Examples 1 to 3 and Comparative Examples 1 to 4 were evaluated by visual sensory inspection.

In Table 1, "good" in the column of appearance evaluation means that the clear coating film gives a deep and transparent feeling to the ivory color of the base, and when colored mica and colored silica sand are added. Depending on the location of these colored aggregates in the clear coating, the surface layer can be seen clearly, and the depth and depth can be felt even with a thin clear coating due to the visual effect that looks hazy as it goes to the lower layer. .

"Defective" means that the above-mentioned transparent feeling was not felt, and only a flat appearance without depth was felt. The term "painting difficult" means that the spray nozzle clogged with cold water stone powder during painting and that nozzle cleaning was required.

[0027]

[Table 1] Next, the sample plates in Examples 1 to 4 and Comparative Examples 1 and 2 were stacked on each other with 30 sheets of sandwich paper interposed therebetween, and allowed to stand for 10 days to examine the presence or absence of crushing and blocking of the coating film.

As a result, in Comparative Examples 1 and 2, 3
Blocking of the slip sheet was observed in the plate materials up to the first sheet, and crushing was observed in a part of the clear coating film of the plate material located at the lowermost stage. In contrast, in Examples 1 to 4, neither blocking nor crushing of the coating film was observed.

[0029]

As described above, according to the first aspect of the present invention, it is possible to easily apply a transparent surface makeup such as natural stone to the surface of a building material such as a fiber reinforced cement board. An aesthetically pleasing cosmetic layer can be obtained at low cost.

According to the second and third aspects of the present invention, painting can be performed with high work efficiency. According to the fourth aspect of the present invention, the transparency of the coating film is further emphasized by the colored aggregates scattered in the transparent fluorite, and the coating film having an excellent appearance can be obtained.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 201/00 C09D 201/00 F term (Reference) 4D075 AE03 CA08 CA32 CA47 CB06 DA06 DB12 DB61 DC01 EA43 EC01 EC11 EC13 EC53 EC54 4G028 FA03 4G055 AA02 AC01 BA36 BA38 4J038 EA011 HA556 KA08 KA20 PB05 PC04

Claims (4)

[Claims] [1] A method for makeup of a building material, characterized in that, after the surface of the building material is colored, when the clear coating is performed on the surface of the colored coating, the surface is painted with a clear paint to which chilled stone powder is added. 2. The particle diameter of the dolomite powder according to claim 1,
A makeup method for a building material having a size of 50 to 150 μm. 3. The amount of the hydrated stone powder according to claim 1 or 2 added to the clear paint is 5 to 100 parts by weight of the paint.
A makeup method for a building material, which is 30 parts by mass. 4. A method for making a building material, wherein a coloring aggregate is added to the clear paint according to claim 1, 2 or 3.