JP2789441B2 - How to attach calcium silicate panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a calcium silicate panel in building work.

[0002]

2. Description of the Related Art When a calcium silicate panel, which is a kind of non-combustible building material, is attached to a building, the panel is often fixed to a base material with nails or screws. In order not to be exposed on the surface, it is common to drive or screw the top until it enters the inside of the panel, so that the holes formed in the panel are filled with putty to smooth the panel surface.

[0003] When the panel surface is thereafter painted or a wallpaper is applied to make up, the above-mentioned putty-filled portion is hidden by the coating film or wallpaper and becomes invisible. However, in the case of a panel having an uneven pattern on its surface, it is often the case that surface makeup such as painting is not applied after fixing to a base material, in which case the putty-filled portion remains exposed.

[0004] It is unsightly if a large number of putty filling portions are conspicuous on the surface where the panel is stuck, so that the color tone of the putty has been conventionally adjusted so that when the putty dries and hardens, the color becomes as close as possible to the panel. I have. However, the effect is not sufficient, and the putty-filled portion is still quite noticeable.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention is to find a putty suitable for the above-mentioned use rather than a putty merely taking color tone into consideration, and to use the silicic acid to make the putty-filled portion almost inconspicuous. It is an object of the present invention to provide a method for attaching a calcium-based panel.

[0006]

The inventor of the present invention believes that the putty-filled portion of the panel is still noticeable even when the color tone is adjusted because of the difference in light reflectance between the panel and the putty-filled portion. Based on the novel finding that the cured product of putty is more noticeable because it has a higher reflectance than the panel, when attaching the calcium silicate panel to the building, the panel is attached with nails or screws. Is fixed to the base material, and holes formed in the panel surface by nailing or screwing have pores having a porosity of 40 to 70%, an average pore diameter of 100 to 150 °, and a diameter of 1000 %, And a putty formed after drying a porous cured product having a pore size distribution of not less than% and the same color as the panel is filled.

The putty having the above characteristics used in the practice of the present invention is as follows.
Basically, putty having a particle size of 15 to 100 μm is prepared by mixing a small amount of water with a coating film forming element comprising a pigment, an acrylic resin emulsion, a thickener, and the like. % And a particle size of 0.5 to 15 μm are selected from those containing about 7 to 43% by weight, respectively. Adjustment of the characteristics of the putty (cured product) necessary for adapting to various calcium silicate panels is possible by changing the compounding ratio of the two pigments within the above range. The higher the ratio, the larger the average pore diameter and the higher the porosity of the cured product.

In order to make the putty cured product the same color as the calcium silicate panel, a colored pigment such as mica or clay and a white pigment such as calcium carbonate or talc are appropriately used as pigments which are the main raw materials of the putty. And adjust their compounding ratio. On a wall of a general building, the partial color difference is not so noticeable, so that the same color tone between the panel and the putty cured product is not strictly required. It is sufficient that the difference does not matter.

[0009]

The putty used in the method of the present invention has a porosity of 40 to 70 when filled into the holes on the panel to be attached and cured.
%, Average pore diameter of 100 to 150 °, diameter of 1000
The pores below Å have a pore size distribution of 70% or more of the total pores, which is the same or similar to the porous structure of the calcium silicate panel. further,
Since the color tone is similar to that of the panel, the cured putty described above has not only a color tone but also a light reflectance very similar to that of the panel, and is almost inconspicuous on the panel attachment surface.

[0010]

EXAMPLES A putty having the following composition was prepared from pigments such as calcium carbonate, talc and mica. Pigment having a particle size of 15 to 100 μm 70% by weight Pigment having a particle size of 0.5 to 15 μm 25% by weight Acrylic resin emulsion 4% by weight (solid content) Thickener (cellulose derivative) 1% by weight 100% of the above mixture 15 parts by weight of water

The dried and cured product of this putty has substantially the same color as the calcium silicate panel described later, has a pore size distribution as shown in FIG. 1, has a porosity of 66%, and an average pore size. The pores having a diameter of 115 ° and a diameter of 1000 ° or less accounted for 70% or more of all the pores.

A commercially available calcium silicate panel having a pore size distribution as shown in FIG. 2 and having a porosity of 58%, an average pore size of 108 °, and a pore having a diameter of 1000 ° or less of 70% or more of all pores was prepared. With a screw, fix the screw to the base material by screwing the screw until the top of the screw enters the panel, thereby filling the hole formed in the panel surface with the above putty, and filling the putty so that the entire panel surface becomes flat. Finished the surface of the part.

[0013] After the putty was cured, the surface to which the panel was attached was beautiful with no paint-filled portion and no paint.

[0014]

As described above, by selecting and using a putty having a specific range of the porosity and the pore size distribution, not only the color tone of the putty-filled portion but also the light reflectance matches that of the calcium silicate panel. According to the panel adhering method of the present invention, it is possible to construct a beautiful panel adhering wall surface in which the putty-filled portion is less noticeable than in the conventional method.

[Brief description of the drawings]

FIG. 1 is a graph showing the pore size distribution of a cured product of putty used in Examples.

FIG. 2 is a graph showing a pore size distribution of a calcium silicate panel used in Examples.

Claims (3)

(57) [Claims] When attaching a calcium silicate panel to a building, the panel is fixed to a base material with a nail or a screw, and then a porosity is formed in a hole formed on the panel surface by a nail or a screw. A putty formed after drying a porous cured product having a pore size distribution of 40 to 70% and having an average pore diameter of 100 to 150 ° and a diameter of 1000 ° or less and having a pore size distribution of 70% or more of all pores and having the same color as the panel. A method for attaching a calcium silicate panel, characterized by filling. 2. When attaching a calcium silicate panel to a building, the panel is fixed to a base material with nails or screws, and then a particle size is formed in a hole formed in the panel surface by nailing or screwing. 15 ~ 100μm pigment 60
~ 80% by weight and a pigment having a particle size of 0.5 to 15 µm
3 to 7% by weight as a solid content of a film-forming element other than a pigment.
% By weight, each containing putty having a porosity of 40 to 70% when dried, an average pore diameter of 100 to 150 °, and a pore size distribution in which pores having a diameter of 1000 ° or less are 70% or more of all pores and a panel. A method for sticking a calcium silicate panel, characterized by filling a porous cured product having the same color as the above. 3. A putty containing an acrylic resin emulsion and a thickener as a coating film forming element.
A method for attaching the calcium silicate panel according to the above.