JP3033381U - Building material board with charcoal - Google Patents

Abstract

(57) [Abstract] [Problem] To further improve various functions such as humidity control, deodorization and heat retention without deteriorating the rigidity characteristics and the like of building material boards.
Controls the growth of mold and spoilage bacteria. SOLUTION: Charcoal powder is mixed with charcoal powder, and charcoal powder is allowed to exist inside a void formed by interlocking the charcoal hair. The surface of the wood wool mixed with the charcoal powder is coated with cement paste to cover and harden the cement layer. 1 for gypsum board
Add about 0 g of charcoal powder.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a building material board mixed with charcoal powder, particularly to a wood wool cement board in which wood hair carved in the fiber direction is piled up irregularly and the surface is covered with cement paste, and a plaster board.

[0002]

[Prior art]

 Wood wool cement boards and gypsum boards are used as building materials with excellent fire resistance, sound absorption, and moisture absorption, as inner wall materials, outer wall materials, ceiling materials, and roof base materials.

The wood wool cement board is produced by stacking wood hairs cut out to a length of 20 cm or more at random, applying cement paste on the surface of the wood hair, covering the surface, and press-molding. Since the board is equipped with many thin and elongated wooden hairs, the minute voids created by the intertwined wooden hairs contribute to sound absorption and moisture absorption. It is also specified as a semi-incombustible material in the Building Standards Law, and it has excellent fire protection.

[0004]

[Problems to be solved by the invention]

 By the way, conventional wood-wool cement boards leave room for further improvement in humidity control and deodorization, which regulate the respiration of atmospheric moisture. Although it has high heat insulation and heat retention due to the wood wool voids, there is still room for improvement in these points.

In particular, in terms of the propagation of various bacteria and the prevention of rust, which are likely to cause problems in basements and warehouses, there is a problem that cannot be solved by simply increasing hygroscopicity and removing moisture. However, if the content rate of the wood wool is excessively increased, another problem such as a decrease in rigidity of the board may occur. On the other hand, it is widely known that gypsum board is excellent in fire resistance, but has poor hygroscopicity.

Therefore, an object of the present invention is to further improve various functions of humidity control, deodorizing property and heat retaining property without deteriorating the rigidity characteristics of the board, and suppress the growth of mold and spoilage fungi. The point is to provide a plate.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object and to achieve the object, the wood wool cement board according to the present invention is made by mixing wood hair and charcoal powder and stacking the wood hair, and thus the wood hair is entangled with each other. To exist.

Ordinary cement paste is applied to the surface of the wood wool and compression molding is performed. It is not necessary to mix charcoal powder into the cement.

The gypsum board is characterized in that charcoal powder is mixed with the gypsum when the board is formed.

[0010]

[Action]

 The wood wool cement board according to the present invention contains charcoal powder in the fine voids of the laminated wood fiber. The humidity control property of the wood wool cement board is because when the humidity is high, the moisture is absorbed in the fine voids of the wood fiber, and conversely, when the atmospheric humidity decreases, the moisture is discharged. Since it has microscopic pores, the humidity control property is further improved.

Along with this, the function of preventing dew condensation is enhanced. Condensation becomes a serious problem when heating in winter in a highly airtight house, but in addition to the wood wool voids, the small pores of the charcoal particles absorb moisture, which causes moisture to drip and push in. It also reduces problems such as mold.

The surface of the charcoal particles and the micropores adsorb odorous particles. The conventional wood wool cement board was also able to reduce the odor of ammonia, etc. This is because odor particles are incorporated into the minute voids inside the board. Wood itself does not have high adsorptivity. However, if a large number of charcoal particles are present in the minute voids formed by the wood wool fibers, not only the number of fine pores will increase, but also the odor particle adsorption performance will be significantly improved.

Further, the charcoal powder increases the number of fine pores, and the far infrared ray emitting function of the charcoal significantly improves the heat retaining property of the board. Far infrared rays are emitted for a long time when the charcoal particles are heated by indoor warm air. Far-infrared rays in the band emitted by charcoal particles effectively suppress the growth of mold and spoilage bacteria. On the other hand, when charcoal powder is mixed in gypsum board, the hygroscopicity is improved, and the far-infrared emission function of charcoal powder further improves the heat retention.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a flow chart showing an example of manufacturing a wood wool cement board according to the present invention. First, wood is cut to a size of 20 cm or more to produce wood wool (S-1). The thinness and width of the wool are set according to the board specifications.

Next, the wood wool and the charcoal powder are mixed (S-2). The ratio of wood wool to charcoal powder can be appropriately changed depending on the place of use and purpose of use of the cement board, but the weight ratio (%) is, for example, in the range of 95: 5 to 50:50. The type of charcoal is not limited, but when using a material with a relatively high specific gravity, such as Bincho charcoal, reduce the mixing ratio so that the weight of the charcoal cement board, which is characterized by light weight, is not affected. I hope that.

Further, since the charcoal powder is mixed in the minute space of the intertwined wood wool fibers, it is desirable that the size of the charcoal powder is about 5 mm at the maximum. Of course, even if the charcoal crushed particles having a particle size exceeding this range are mixed in, no problem will occur as long as the crushed particles are crushed internally during pressure molding.

Next, the surface of the wooden hair which is mixed with the charcoal powder and overlapped is coated with cement paste, and molded and pressed (S-3). Then, after predetermined curing, a drying process is performed to obtain a final product (S-4).

As shown in FIG. 2, the wood wool cement board thus prepared has a large number of wood hairs 2, charcoal powder 3, and voids (gap) 4 inside the cement surface layer 1. For the sake of purification, the number of charcoal powders 3 is drawn extremely small in the drawing, but in reality the charcoal powders 3 are filled in the gaps 4. This is because it is easier to absorb moisture than mere voids, to adsorb odor fine particles, and to improve soundproofing.

As described above, such a wood wool cement plate can remove moisture and prevent dew condensation, so that the commercial value as an inner wall material or a ceiling material is further improved. Also, due to its characteristics such as mold prevention and the prevention of spoilage germ growth, it can further enhance its value as a wall material for warehouses and indentations.

[0020] Furthermore, by improving the heat retention by far infrared rays, not only can the fuel efficiency of indoor heating be improved, but even when the outside temperature in winter is harsh, such as in Hokkaido, after heating is stopped The decrease in indoor temperature is significantly suppressed, and the comfort of the living space can be further enhanced.

The wood wool cement board according to the present invention does not impair the conventional characteristics. Characteristics such as ease of forming, lightness, ease of construction, manufacturing cost, fire resistance, and little change over time remain unchanged. In addition, the wood wool cement board according to the present invention is not limited to wood hair that has been cut out long, and thin wood pieces that are finely cut may be used.

On the other hand, when charcoal powder is mixed into the gypsum board, the charcoal powder exhibits the original fire resistance, as well as the hygroscopicity (humidity control), heat retention and antibacterial properties of the charcoal powder. The amount of charcoal powder used for the gypsum board can be effective even with a small amount of, for example, about 4 to 10 g. If the amount is around 10 grams, there is no aesthetic problem such as the white color of the plaster becoming dirty.

[0023]

[Effect of the invention]

 As described above, according to the building material board of the present invention, the moisture control, deodorizing, and heat retaining functions are further improved without deteriorating the rigidity characteristics of the board, and the propagation of mold and spoilage bacteria. Can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of manufacturing a wood wool cement board according to the present invention.

FIG. 2 is a partial cross-sectional view showing an example of a wood wool cement board according to the present invention.

[Explanation of symbols]

 1 Cement surface layer 2 Wood wool 3 Charcoal powder 4 Gap

Claims (2)

[Utility model registration claims] 1. A method of mixing charcoal powder and charcoal powder and laminating the charcoal hair so that the charcoal powder is present inside the voids formed by the interlocking of the charcoal hair and the cement paste is applied to the surface of the charcoal hair and compressed. A building material board containing charcoal that is characterized by being molded. 2. A charcoal-containing building material board characterized by being formed by mixing charcoal powder with gypsum.