JP3354504B2 - Wood wool cement board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wool cement board used as a floor material, a wall material, a ceiling material and the like of a building.

[0002]

2. Description of the Related Art A wood wool cement board formed by pressing a large number of wools (broad wool, narrow wool, etc.) obtained by cutting wood into shavings with liquid cement has a low thermal conductivity. Excellent heat insulation performance, excellent sound absorption and sound insulation performance, fire and fire resistance performance, and because of its light weight and toughness, it is used as a heat insulation board, sound insulation board, etc. for building flooring, wall materials, ceiling materials, and concrete casting materials. It is frequently used for such purposes.

[0003]

[Problems to be Solved by the Invention] Wood wool cement board (wide wood wool cement board, wood fiber cement board, wood cement board)
Due to their excellent properties, there is a tendency for applications to be more and more widespread, and this trend demands more and more changes in performance such as heat insulation performance. Due to this demand, the material and shape of the wool are variously modified, stone powder is mixed into the wool, small holes are formed in the pressed wool cement board, Attempts have been made to attach another sheet member to a plate, and this has been commercialized.

[0004] However, it is difficult to modify both the heat insulating performance, soundproofing and soundproofing performance, fireproofing and fireproofing performance of the wood wool cement board, and by mixing or laminating other members for performance modification, At present, there is a problem that the lightweight property of the wool cement board is impaired.

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a wood wool cement board in which various properties such as heat insulation performance and sound insulation / insulation performance can be modified, and which can be easily reduced in weight. And

[0006]

Means for Solving the Problems To achieve the above object of the present invention, cork grains having a particle diameter of 1 to 30 mm are added to wood wool, and the weight ratio of the total weight of cork grains is 5 to 50 with respect to the total weight of wood wool 100. The mixed liquid is kneaded with a liquid cement as a binder, and the kneaded material is press-formed into a flat plate having a predetermined thickness.

[0007] The cork grain is obtained by granulating natural raw cork or granulating the natural raw cork by steam heating and pressurizing the cork. is there. Such cork grains are excellent in elasticity, heat insulation, and sound absorbing properties peculiar to cork, and are also exhibited in a wood wool cement board in which these types of properties are commercialized. In particular, carbonized cork granules are excellent in humidity control performance, deodorization performance, and mite repellent performance.Wool wool cement boards made by mixing this with wood wool at a predetermined weight ratio are particularly suitable for flooring, wall materials and ceiling materials. It becomes an excellent building material.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS.

The wood wool cement board 1 shown in FIG. 1 and FIG.
It is composed of wood wool 2, cork grains 3, and cement 4. Wood wool 2
Is a wool which is a raw material of an existing wool cement board, and is mass-produced by, for example, a wool machine 10 as shown in FIG. The wood wool machine 10 mass-produces the wood wool 2 by cutting wood 11 such as pine, cedar, cypress, and the like into a shaving shape with a plane blade 12. In the figure, reference numeral 13 denotes a wood presser, and 14 denotes a container for accommodating the manufactured wool 2.

The cork grain 3 is a raw cork grain produced from a natural cork oak bark, or a carbonized cork grain obtained by steam-heating and pressurizing the raw cork grain to expand the carbon. The cork grains 3 can also be mass-produced using a wood wool machine 10 as shown in FIG. 3B, for example. In this case, the cork block 15 in which a large amount of cork is block
Then, the cork grains 3 may be formed by cutting. In the present invention, the particle size of the cork particles 3 is set to 1 mm to 30 mm for the reason described later.
It is specified in the range of mm.

The above-mentioned wood wool 2 and cork grains 3 are mixed at a weight ratio of 5 to 50 of the total weight of cork grains with respect to the total weight of wood wool 100, and liquid cement 4 as a binder is kneaded. By pressing the kneading material into a flat plate having a predetermined thickness, the wood wool cement board 1 shown in FIG. 1 is manufactured. This production equipment should use the existing wool cement board production equipment,
A specific example is shown in FIG. 4 and described.

A large amount of material 20 obtained by adding liquid cement 4 to a mixture of wood wool 2 and cork particles 3 and kneading the mixture is put into a hopper 21, and the material 20 is quantified on a conveyor 22 from the lower end opening of the hopper 21. Supply. In addition, hopper 2
If necessary, lime or a small amount of magnesium chloride may be mixed in the material 20 supplied to 1. Also, if the corks 3 are immersed in water before kneading the wood wool 2, the corks 3 and the liquid cement 4, the familiarity of the three will be improved and the quality of the material 20 will be improved.

When the material 20 supplied from the hopper 21 to the conveyor 22 is conveyed by the conveyor 22 to the thickness-regulating rotary roller 24, the thickness of the material 20 is made uniform by the rotary roller 24, and It is conveyed to the conveyor 23. The material 20 on the conveyor 23 of the press machine 25 is pressed from above and below by the press machine 25 to form a wood wool cement board having a predetermined thickness. The press-molded wood wool cement board is cut into a predetermined size, a plurality of the pieces are stacked and stored, cured for a predetermined time, and commercialized.

Wood wool cement board 1 manufactured as described above
Is the same toughness, heat insulation performance, and the same as a conventional wood wool cement board without cork if the amount of cork grains 3 is small.
It has sound-absorbing and sound-insulating properties and fire and fire resistance. When the amount of cork grains 3 is large, the elastic performance specific to cork and the following performance are added.

When the cork grains 3 are raw cork grains, when the raw cork begins to burn, the surface is carbonized and expands, and the expansion blocks the air and suppresses the spread of fire.
The flameproofing performance of is improved.

When the cork grains 3 are carbonized cork grains, the thermal conductivity of the carbonized cork is about 0.03 to 0.04 kcal / mh.
° C, which is much smaller than that of wood wool, the heat insulation performance of the wood wool cement board 1 is improved from several percent to about several tens of the heat insulation performance of the conventional wood wool cement board without cork. In addition, carbonized cork particles obtained by heat-treating raw cork are excellent in sound absorption performance, humidity control performance, deodorizing performance, and mites repelling performance because the raw cork is a porous body that has been carbonized and expanded. It is utilized for the cement board 1.

Further, since the carbonized cork grains 3 are lighter in weight than the wood wool 2, the more the wood cork grains 3 are used, the lighter the wood wool cement board 1 becomes. Further, when carbonized cork is produced from raw cork, a tan component as an adhesive comes out on the surface of the cork, and the ani component adheres the wood wool 2 and the carbonized cork grains 3 to each other. The toughness is enhanced, and the amount of cement in the binder can be reduced by the tar component, so that the weight of the wood wool cement board 1 can be further reduced.

In the above-mentioned wood wool cement board 1, if the average particle size of the cork grains 3 is smaller than 1 mm, the performance peculiar to cork cannot be utilized, and mass production of such fine cork grains becomes difficult, and the production cost becomes low. It will be expensive. On the other hand, if the average particle size of the cork grains 3 exceeds 30 mm, uniform mixing with the wood wool 2 becomes difficult, and the quality and strength of the wood wool cement board 1 become unstable.

The mixing ratio of the wool 2 to the cork grains 3 is also important. If the total weight of the cork grains is as small as 5 or less with respect to the total weight of 100 wool, the amount of cork is too small and the performance peculiar to cork is hardly obtained. If the total weight of the cork grains exceeds 50, the cork amount will be too large, and it will be difficult to mix uniformly with the wood wool 2 and the production cost and material cost will increase, and the toughness as a building material will increase. Will be missing.

The wood wool cement board 1 of the embodiment shown in FIG.
Is a rectangular flat plate shape, but the shape of the wood wool cement plate of the present invention is not limited to a flat plate shape, but may be a block shape, a square rod shape, or the like.

[0021]

According to the present invention, cork grains mixed with wood fur impart excellent properties as a building material such as heat insulation performance and sound absorbing performance peculiar to cork to a wood wool cement board. Can provide a multifunctional and lightweight wood wool cement board as a building material such as a floor material, a wall material, and a ceiling material.

In particular, when the cork particles are carbonized cork particles obtained by carbonizing and expanding raw cork by steam heating and pressure, the heat insulating performance, sound absorbing performance, humidity control performance, deodorizing performance, and mite repelling performance become more remarkable. Further, a high quality, multifunctional wood wool cement board can be provided as a building material such as flooring.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wool cement board showing an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of the wool cement board of FIG.

FIG. 3A is a front view showing an outline of an apparatus for manufacturing wood wool (wood wool machine), and FIG. 3B is a front view showing an outline of an apparatus for manufacturing cork granules.

FIG. 4 is a front view showing an outline of an apparatus for manufacturing a wool cement board.

[Explanation of symbols]

 Reference Signs List 1 wood wool cement board 2 wood wool 3 cork grain (carbonized cork grain) 4 cement

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI E04F 13/14 102 E04F 13/14 102B (56) References JP-A 1-244065 (JP, A) JP-A 2-132631 (JP, U) Jpn. , A1) French Patent Application Publication 2727675 (FR, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) C04B 18/26 C04B 18/24 C04B 16/02 CA (STN) JICST file ( JOIS)

Claims (2)

(57) [Claims] 1. A cork grain having a particle diameter of 1 to 30 mm is added to wood wool, and a total weight of cork grain is 5 to 50 with respect to a total weight of wood wool of 100.
A wood wool cement board, characterized in that a liquid cement as a binder is kneaded with a mixture obtained by mixing at a weight ratio of 1, and the kneaded material is press-formed into a flat plate having a predetermined thickness. 2. The wood wool as claimed in claim 1, wherein the cork grains are carbonized cork grains obtained by cutting raw cork of an arbitrary shape by steam heating and cutting and pressing carbonized cork. Cement board.