JPH09170276A - Interior wall material and wall structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of dew condensation by stacking a sheet type material containing fine particles of a specific grain size or the like on an insulating material layer of specific bulk density or the like stacked on one side of a wall board of specific bulk density or the like. SOLUTION: An insulating material 4 made of glass wool or the like having bulk density between 200kg/m<3> or less and a Young's modulus between 1.0×10<3> and 1.0×10<6> N/m<2> is stacked on and integrated with one side of an interior wall board 1 made of plywood having bulk density between 300 and 500kg/m<3> and a Young's modulus between 1.0×10<6> and 1.0×10<8> N/m<2> . Also, an acoustically transparent surface sheet 9 containing many small spaces is formed out of gas permeable paper or the like. Then, spaces inside the surface sheet 9 are filled with fine particles 8 made of whiskers or the like having a mean grain size between 0.1 and 1000μm and bulk density between 0.1 and 1.5kg/m<3> , and a sheet type material 7 of 5mm or less thickness containing fine particles is thereby formed. Furthermore, the sheet type material 7 is stacked on and integrated with the insulating material 4, thereby forming an interior wall material 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a wall structure in a building such as a house, a wall structure for preventing dew condensation mainly due to an effect of dehumidifying / dehumidifying by aeration of air, and the wall structure. Regarding inner wall materials.

[0002]

2. Description of the Related Art In recent years, with the increase in airtightness and heat insulation of houses,
Condensation is likely to occur inside the wall due to temperature differences between the inside and outside. Condensation is also a major cause of mold, ticks, and wood decay, and has become a problem from the aspect of health and durability. As a conventional wall structure having a countermeasure against dew condensation, as shown in FIG. 14, an inner wall board 1 is attached to a frame material (not shown), and the outer surface of the inner wall board 1 is covered with a moisture-proof sheet 100 and then a heat insulating material is provided. An example is one in which the outer wall board 2 is attached via the ventilation layer 6 so as to face the heat insulating material 200 using a furring strip (not shown) or the like. Arrows indicate the flow of air.

[0003]

Since the conventional wall structure is formed by laminating many materials as described above during the on-site construction by carpenters and the like, it takes a lot of time and labor for construction, and the original design is as designed. May not be assembled into. Moreover, the heat insulating material is particularly troublesome to construct, and may change over time to block the ventilation layer.

Further, in the conventional wall structure, since only the soundproofing (sound insulation) measures are taken only by the sound absorbing effect of the heat insulating material, the sound insulation performance in the house is never sufficient, and the noise from the outside of the house is not blocked so much. An object of the present invention is to provide an inner wall material that can be used for forming a wall structure having a high sound insulation performance, which can be constructed with reduced dew condensation, can be installed in a small amount.

Another object of the present invention is to provide a wall structure which can prevent dew condensation, can be installed in a small amount, and has a high sound insulation performance.

[0006]

An inner wall material according to claim 1 is a wall board used for an inner wall of a building (hereinafter referred to as an inner wall board) and a heat insulating material laminated and integrated on one surface of the inner wall board. And a powder-containing sheet-like material laminated and integrated with the heat insulating material layer. The powder-containing sheet-like material is formed by filling a space between acoustically transparent topsheets with powder that exhibits sound absorbing performance due to vibration of particles.

According to another aspect of the present invention, there is provided an inner wall material, an inner wall board, a heat insulating material layer having a large number of protrusions on one surface and the other surface laminated and integrated on one surface of the inner wall board, and a large number of protrusions penetrating the inner wall material. And a powder-containing sheet-like material having a hole and being integrally laminated on the heat insulating material layer. The tip of the protruding portion of the heat insulating material layer projects from the hole of the powder-containing sheet material. The powder-containing sheet-like material is formed by filling a space between acoustically transparent topsheets with powder that exhibits sound absorbing performance due to vibration of particles.

The inner wall material according to a third aspect is the one according to the first or second aspect, wherein the inner wall board is at least one selected from the group consisting of plywood and gypsum board, and the heat insulating material is glass wool. , At least one selected from the group consisting of rock wool and polyurethane foam. The inner wall material according to claim 4 is the one according to claim 1 or 2, wherein the inner wall board is at least one selected from the group consisting of rock wool board, hard foam urethane board and hard foam styrene board. The heat insulating material is at least one selected from the group consisting of glass wool, rock wool and polyurethane foam.

The inner wall material according to a fifth aspect is the first to fourth aspects.
In any one of the above, the space between the surface sheets of the powder-containing sheet-like material is partitioned into a large number of small spaces arranged in a plane, and the powder is filled in a large number of small spaces. It is characterized by The inner wall material according to claim 6 is the one according to any one of claims 1 to 4, wherein the space between the surface sheets of the powder-containing sheet-like material is filled with a porous base material, and the powder is It is characterized in that it is contained in the voids of the porous substrate.

The inner wall material according to claim 7 is the inner wall material according to any one of claims 1 to 4.
In any one of the above, the lattice-like structure is sandwiched in the space between the surface sheets of the powder-containing sheet-like material, and the lattice-like structure is arranged in a plane and a large number of cells having front and back surfaces opened. And the powder is contained in the cell. The inner wall material according to claim 8 is the one according to any one of claims 1 to 7, wherein the powder contained in the powder-containing sheet material has an average particle diameter of 0.1 to 1000 μm and 0. ., And a bulk density in the range of 1 to 1.5 kg / m ³ .

The inner wall material according to the ninth aspect is the first to seventh aspects.
In any of the above items, the powder-containing sheet-like material
The powder contained in is an average particle of 0.1 to 1000 μm.
Diameter and 0.1-1.5kg / m^Three With bulk density in the range of
1st powder and spring constant 1 × 10 ^TwoDo not use fine fibers of N / m or less
It is a mixed powder with the second powder. Claim
The inner wall material according to claim 10 is described in any one of claims 1 to 7.
Of the listed items, included in the powder-containing sheet
The powder has an average particle size of 0.1 to 1000 μm and 0.1 to
1.5kg / m^Three A first powder having a bulk density in the range of
Ne constant 1 × 10^TwoSecond powder consisting of fine fibers with N / m or less
And the fine fibers adhere to the surface of the particles of the first powder.
It is characterized by that.

The inner wall material according to claim 11 is defined by claim 1
In any one of 10 items, the powder-containing sheet-like material has a thickness of 5 mm or less. The inner wall material according to claim 12 is the one according to any one of claims 1 to 11, wherein the heat insulating material has a bulk density of 200 kg / m ³ or less and 1.0 × 10 ^{3 to} 1.0 × 10 ^6. The first porous material has a Young's modulus in the range of N / m ² .

The inner wall material according to claim 13 is the same as that according to claim 12.
In the one described in the item 1, the inner wall board is 300 to 50.
Bulk density within the range of 0 kg / m ³ and 1.0 × 10 ^{6 to} 1.0
The second porous material has a Young's modulus within a range of × 10 ⁸ N / m ² . The inner wall material according to claim 14 is the one according to any one of claims 1 to 11,
The heat insulating material is a second porous material having a bulk density in the range of 300 to 500 kg / m ³ and a Young's modulus in the range of 1.0 × 10 ^{6 to} 1.0 × 10 ⁸ N / m ^2. It is characterized by

The inner wall material according to the fifteenth aspect is the thirteenth aspect.
Alternatively, the second porous material may be a rock wool sound absorbing plate made of rock wool fiber and a binder. The board for inner wall is a board for interior of a building used as a wall separating the inside and outside of a house or a house, a partition wall in the building, and the like, and is arranged on the indoor side in the wall structure. Examples of the inner wall board include plywood, fiber board, wood cutting board, cement board, PC board (pulp cement board), calcium silicate board (silica board), gypsum board, rock wool board, hard urethane foam board, hard board. Plate-shaped materials such as expanded styrene plate and high-density glass wool plate are used. A surface decorative material layer for interior (for example, cloth or coating film) may be provided on the indoor surface of the inner wall board.

Examples of the heat insulating material constituting the heat insulating material layer include at least one selected from the group consisting of glass wool, rock wool and polyurethane foam. High density rock wool, hard expanded styrene plate, hard expanded urethane plate, Hard insulation such as low density glass wool is preferred. The heat insulating material is laminated and integrated so as to cover one surface of the inner wall board to form a heat insulating material layer. The inner wall board and the heat insulating material are integrated by, for example, adhering the two with an adhesive.

A large number of protrusions may be formed on the surface of the heat insulating material layer opposite to the surface laminated and integrated on one surface of the inner wall board. The protrusions protrude through the through holes of the powder-containing sheet-like material described later. When the wall structure is formed, the tip of the protrusion abuts the inner surface of the outer wall material, so that the ventilation layer is reliably and easily formed between the powder-containing sheet and the outer wall material in a portion other than the protrusion. Further, the protrusion can reinforce the outer wall material, or can eliminate the need for a furring strip for attaching the outer wall material.

The shape, size, height, spacing, arrangement, etc. of the protrusions are not particularly limited, but the vertical air flow may be easily generated in the wall structure or the vertical air flow in the wall structure. It is preferably set so as to facilitate flow and to reinforce the outer wall material. The powder-containing sheet-like material (also referred to as a powder-holding sheet) is formed by filling a space between acoustically transparent surface sheets with powder that exhibits sound absorbing performance due to vibration of particles. Since the powder that exhibits sound absorbing performance due to the vibration of particles (longitudinal vibration) has excellent sound absorbing characteristics,
In the powder-containing sheet material using this powder, even if the filling amount of the powder is reduced, that is, the powder layer thickness is reduced (the thickness of the powder-containing sheet material is, for example, 5 mm or less, preferably Can exhibit sound absorption performance in the low frequency range (even if it is 3 mm or less). Moreover, the powder-containing sheet-like material obtained by filling the space between the acoustically transparent surface sheets with the powder in the thickness direction is
It is possible to satisfy both the sound absorbing performance and the handleability as a material.

The powder-containing sheet material is laminated and integrated on the surface of the heat insulating material layer opposite to the surface on the inner wall board side. The powder-containing sheet material and the heat insulating material are integrated with each other by, for example, bonding the both with an adhesive. When a large number of protrusions are formed on the surface of the heat insulating material layer opposite to the surface laminated and integrated on one surface of the inner wall board, the powder-containing sheet material has a large number of holes through which the protrusions penetrate. Have. The powder-containing sheet-like material and the heat insulating material layer are laminated and integrated so that the protrusions penetrate through the holes of the powder-containing sheet-like material and project.

The shape and size of the holes of the powder-containing sheet,
It is preferable that the spacing, arrangement, etc. be set in accordance with those of the protrusions of the heat insulating material layer. The surface sheet used for the powder-containing sheet material is not particularly limited as long as it is acoustically transparent in the thickness direction and can prevent powder spillage. For example, breathable paper, woven fabric, non-woven fabric sheet, glass cloth, etc., or approximately 50μ in thickness
Polymer sheets such as polyester sheets, polyethylene sheets, vinyl sheets and the like having a size of m or less, metal foils such as aluminum foil and the like can be mentioned. These sheets are arbitrarily selected depending on the particle size of the powder used and the filling amount of the powder. The sheet is formed, for example, into a bag shape by adhering openings at both ends of a tubular sheet by a method described below, or by stacking two sheets so as to face each other, and a method for forming a peripheral edge portion described later. It may be in the form of a bag by being adhered by. Further, the edge of the hole through which the protrusion of the heat insulating material layer penetrates can be similarly bonded.

The powder contained in the powder holding sheet is a powder which exhibits sound absorbing performance by vibrating the particles, for example, Japanese Patent Laid-Open Nos. 5-158483 and 5-173.
The powder having excellent sound absorbing properties proposed in Japanese Patent No. 577 may be used. Examples of the powder that exhibits sound absorbing performance due to vibration of particles include flat type and peak type powders having a frequency characteristic of sound absorption coefficient. Unless the frequency characteristics of the sound absorption coefficient are flat type or peak type, the sound absorption characteristics in the low sound range may be inferior.

A flat type having frequency characteristics of sound absorption coefficient
Is when a sound wave with a frequency above a certain frequency is incident
In addition, it has a substantially constant sound absorption coefficient. Where special
Since the constant frequency changes depending on the thickness of the powder layer,
There is no particular limitation on the value of. Flat type, sound absorption frequency
The powder having several characteristics includes: vermiculite (average particle size: 200 to 400 μm,
Bulk density: 0.1g / cm^Three) ・ Wet silica (average particle size: 400-500 μm, bulky
Degree: About 0.1-0.2g / cm^Three) ・ Soft calcium carbonate (average particle size: 1-2 μm, bulky)
Degree: About 0.4g / cm^Three) Nylon powder (average particle size: 180-500 μm,
Bulk density: About 0.5g / cm ^Three) ・ Ferrite calcined product (average particle size: 1.3-1.5 μm,
Bulk density: about 1.0 g / cm ^Three) Gold mica (average particle size: 650 μm, bulk density: about 0.
5 to 0.6 g / cm^Three) Etc., each used alone, or
, Two or more powders are used together.

With a frequency characteristic of peak type sound absorption coefficient
Has the maximum value of the frequency characteristic curve of the sound absorption coefficient that is convex upward
That is. Here, the frequency that has a convex maximum is
The value is particularly limited because it changes depending on the thickness of the powder layer.
I don't know. Powder with peak-type sound absorption frequency characteristics
Examples thereof include silica, mica, talc and the like. Yo
More specifically, for example, gold mica (average particle size: 40 μm, bulk density: about 0.4
g / cm^Three) ・ Wet silica (average particle size: 7 to 150 μm, bulk density:
About 0.1-0.3g / cm^Three) ・ Spherical silica (average particle size: 3 to 28 μm, bulk density: approx.
0.3-0.9 g / cm^Three) Talc (average particle size: 1.5 to 9.4 μm, bulk density:
About 0.3-0.5g / cm^Three・ Acrylic resin fine powder (average particle size: 1-2 μm, bulky)
Degree: About 0.3g / cm^Three) Calcium silicate powder (average particle size: 20 to 30 μm,
Bulk density: about 0.1 g / cm ^Three・ Perlite powder (average particle size: 100-150 μm,
Density: About 0.1-0.2g / cm^Three) Fluororesin powder (average particle size: 5-25 μm, bulky)
Degree: About 0.4-0.5g / cm ^Three) ・ Bentonite (average particle size: 0.3-3.5 μm, bulk
Density: About 0.5-0.8g / cm^Three) Shirasu balloon (average particle size: 30-50 μm, bulky)
Degree: About 0.2-0.3g / cm^Three) ・ Fused silica (average particle size: 5 to 32 μm, bulk density: approx.
0.5-0.8g / cm^Three) ・ Silicon carbide powder (average particle size: 0.4 to 5.0 μm,
Density: about 0.6 to 1.1 g / cm^Three) ・ Nylon powder (average particle size: 5-250 μm, bulk
Density: About 0.3-0.5g / cm^Three) ・ Acrylic resin powder (average particle size: 45 μm, bulk density:
About 0.6-0.7g / cm^Three) ・ Carbon fiber powder (average fiber diameter: 14-18 μm, fiber
Length: 100-200 μm, Bulk density: About 0.5-0.6
g / cm^Three・ Titanium dioxide powder (average particle size: 0.1 to 0.25μ)
m, bulk density: about 0.5-0.7 g / cm^Three) Calcium carbonate powder (average particle size: 3 to 30 μm, bulk
Density: About 0.6-1.0g / cm^Three) ・ Vinyl chloride resin powder (average particle size: 130 μm, bulky)
Degree: about 0.5g / cm^ThreeBarium ferrite magnetic powder (average particle size: 1.8 to 2.2)
μm, bulk density: about 1.5g / cm^Three) ・ Silicone powder (average particle size: 0.3-0.7μ)
m, bulk density: about 0.2 to 0.3 g / cm^Three) Etc., each used alone, or
, Two or more powders are used together.

According to a sixteenth aspect of the present invention, in the wall structure, the inner wall board is disposed on the indoor side of the building, and the inner wall material is a powder-containing sheet material. The outer wall material is arranged outside the building so as to face each other through a ventilation layer. As the outer wall material, fiber board, metal siding board, wood chip cement board, magnesium carbonate board,
Any commonly used building material such as an extruded board may be used.

The aeration layer is a part of an aeration path in which the air entering from the lower part of the building rises between the powder-containing sheet and the outer wall material, and goes out through the attic to the outside. Is.

[0025]

In the inner wall material of the present invention, the inner wall board, the heat insulating material and the powder-containing sheet material are laminated and integrated. Therefore, the heat insulating material and the powder-containing sheet material should be applied separately. It is possible to easily form a wall structure. In this inner wall material, since the surface of the heat insulating material layer on the ventilation layer side is covered with the powder-containing sheet-like material, the inner wall material and the outer wall material should be attached so that the ventilation layer is formed between the inner wall material and the outer wall material. This makes it possible to form a wall structure in which the ventilation layer is less likely to be blocked by the heat insulating material. Thereby, the ventilation layer can be secured and the ventilation in the wall is improved. That is, the air that has entered the wall from the lower part of the building rises up between the powder-containing sheet-like material and the outer wall material, and goes out through the attic to be easily ventilated naturally or forcibly. For this reason, dew condensation is less likely to occur in the wall structure. The powder-containing sheet material has sound absorbing performance because the powder that exhibits sound absorbing performance due to vibration of the particles is filled in the space between the acoustically transparent surface sheets, and the wall structure has sound insulating performance. Can be given.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the drawings showing its embodiments. -First Embodiment- The inner wall material 5 shown in A of Fig. 1 is a powder for the inner wall board 1 and four layers of the heat insulating material laminated and integrated on one surface on the outdoor side of the inner wall board 1 and the heat insulating material layer. The sheet-like material 7 is included. The inner wall member 5 and the outer wall member 2 are constructed so as to form the ventilation layer 6 between the powder-containing sheet-like material 7 of the inner wall member 5 and the outer wall member 2, thereby forming a wall structure. This wall structure is shown in Figure 1.
As seen in 3, it is used for the walls of houses. 1 and 13
In, the arrow indicates the flow of air.

The powder-containing sheet 7 is formed by filling the space between the acoustically transparent surface sheets 9, 9 with the powder 8. The powder 8 exhibits sound absorbing performance due to vibration of particles (longitudinal vibration). Further, in the sheet-shaped material 7, since the powder 8 is closed in the space between the surface sheets 9 and 9, spillage of the powder 8 can be prevented, handling is excellent, and low vibration due to longitudinal vibration of the powder 8 is achieved. Has high sound absorption characteristics in the frequency range.

As the inner wall board 1, gypsum board,
Any commonly used building material such as plywood, fiber board, wood cutting board, cement board, PC board, calcium silicate board, etc. may be used.
The heat insulating material 4 may be a hard heat insulating material such as high density rock wool, hard foam styrene, and hard foam urethane. The outer wall material 2 may be a generally used building material such as a fiber board, metal siding, wood chip cement board, magnesium carbonate board, and extruded board.

The inner wall material 5 has an inner wall board 1 and a heat insulating material 4. For example, the inner wall board 1 is high density glass wool, and the heat insulating material 4 is a gradient material structure such as low density glass wool. But it's okay. By using plywood and / or gypsum board as the inner wall board 1 and using at least one selected from the group consisting of glass wool, rock wool and polyurethane foam as the heat insulating material 4, in addition to the above dew condensation preventing effect, sufficient heat insulating property is obtained. Can be given.

At least one selected from the group consisting of rock wool board, rigid foamed urethane plate and rigid foamed styrene plate is used as the inner wall board 1, and the heat insulating material 4 is selected from the group consisting of glass wool, rock wool and polyurethane foam. By using at least one, the heat insulating property can be further improved as compared with the case of using plywood and / or gypsum board as the inner wall board 1.

The powder 8 may be, for example ,: 0.1-1000 μm average particle size and 0.1-1.5 kg
a powder having a bulk density in the range of / m ³ , an average particle size of 0.1 to 1000 μm and 0.1 to 1.5 kg
1st powder having a bulk density in the range of / m ³ and spring constant 1
× 10 ² N / m or less, mixed powder with a second powder consisting of fine fibers, or ・ 0.1 to 1000 μm average particle size and 0.1 to 1.5 kg
1st powder having a bulk density in the range of / m ³ and spring constant 1
And a second powder composed of fine fibers of 10 ² N / m or less,
Powders in which the fine fibers are attached to the surfaces of the particles of the first powder are mentioned. When the powder 8 is any of these three types, the sound insulation performance obtained when the inner wall board 1 and the heat insulating material 4 are the above or not, can be further improved.

If the average particle size or bulk density of the powder is out of the above range, the sound absorption characteristics in the low sound range may be deteriorated.
From the point of enhancing the sound absorption characteristics in the low range,
A powder having an average particle diameter of 300 μm and a bulk density in the range of 0.1 to 0.8 kg / m ³ is more desirable. As the powder in the powder-containing sheet material 7, an average particle diameter of 0.1 to 1000 μm and 0.1 to 1.5 kg
with a bulk density in the range of / m ³ (preferably 1 to 300 μm
Powder having an average particle size of 10 and a bulk density in the range of 0.1 to 0.8 kg / m ³ ) and a spring constant of 1 × 10 ² N / m or less (preferably a spring constant of 10 N / m or less). Mixed powder with a second powder consisting of fine fibers, or-0.1 to 1000 μm average particle size and 0.1 to 1.5 kg
with a bulk density in the range of / m ³ (preferably 1 to 300 μm
Powder having an average particle size of 10 and a bulk density in the range of 0.1 to 0.8 kg / m ³ ) and a spring constant of 1 × 10 ² N / m or less (preferably a spring constant of 10 N / m or less). It is even more desirable to use a powder having a second powder composed of fine fibers, in which the fine fibers adhere to the surfaces of the particles of the first powder. By using these powders, the sound absorption characteristics in the low sound range are further improved. If the spring constant of the microfibers deviates from the above range, the sound absorption characteristics in the low sound range may be deteriorated.

Specifically, instead of the powder 8, as shown in FIG. 7, powder particles 80 are mixed with a powder composed of fine fibers 81 having a spring constant within the above numerical range. Alternatively, the particles 80 of powder consisting of the powder particles 80
By attaching the fine fibers 81 made of powder of the fine fibers 81 to the surface of the powder, the sound absorption characteristics can be made lower than that of the powder made of the powder particles 80, and the thickness of the powder layer (or sheet). It is possible to further reduce the thickness of the material.

As the fine fibers 81 to be adhered to and mixed with the powder particles 80, whiskers such as metal whiskers, plastic fibers, plant fibers, glass fibers or a structure in which they are aggregated are used. More specifically, mention may be made of potassium titanate whiskers, silicon carbide whiskers, zinc oxide whiskers, calcium silicate needle powder, sepiolite and the like. Although the fiber diameter and the fiber length are not particularly limited, the average fiber diameter is usually in the range of 0.1 to 10 μm, and the fiber length is in the range of several μm to several tens μm.

The fine fibers 81 are not limited to these, and may have a spring constant of 1 × 10 ² N / m or less, preferably a spring constant of 10 N / m or less. Further, the mixing ratio of the powder particles 80 and the fine fibers 81 is not particularly limited, but the weight ratio of the powder of the powder particles 80 and the powder of the fine fibers 81 is, for example, 20: 1 to 1: 1. Within the range of 1:10, 5: 1 to 1:
The range of 3 is preferable. If the ratio of the fine fiber powder is out of the above range, the sound absorption characteristics in the low sound range may be deteriorated.
The method for adhering the fine fibers 81 to the powder particles 80 is not particularly limited. For example, a method in which the fine fiber bodies are mixed with a diluted binder and sprayed on the powder particles flowing in hot air, or , A method in which powder particles coated with a heat-fusible binder and fine fibers are mixed and heated.

The sound absorbing mechanism of the powders 8, 80 will be described. When a sound wave is incident on the powder layer, the longitudinal vibration mode of the powder layer is excited, and the sound absorption coefficient increases in the frequency band in which the mode occurs. The frequency at which the sound absorption coefficient increases becomes the peak frequency (f
If r), fr can be expressed by the following equation with Young's modulus E of the powder layer, bulk density ρ, and powder layer thickness t. fr = (E / ρ) ^1/2 / 4t The Young's modulus E of the powder layer is determined by the spring constant of the powder particle surface.

Usually, the spring constant of the surface of powder particles is 1 × 10.
^Since it is larger than ² N / m, if the spring constant of the fine fibers 81 is less than 1 × 10 ² N / m, which is smaller than the spring constant of one powder particle, the sound absorption characteristic can be further lowered. .
The thickness of the powder-containing sheet material 7 can be 5 mm or less, preferably 3 mm or less. As described above, the sound absorption peak frequency fr is determined by the powder physical properties (E / ρ) ^1/2 and the powder layer thickness t. Therefore, it is necessary to select the thickness of the powder-containing sheet-like material and the powder layer to be used according to the required sound absorption characteristics. It is effective to increase the thickness in order to obtain high sound absorption characteristics in the low sound range, but if the thickness exceeds 5 mm, the handleability as a sheet becomes difficult.

The method for integrating the inner wall board 1, the heat insulating material 4, and the powder-containing sheet 7 is not particularly limited, and may be sewn with a thread, for example, an adhesive or an adhesive may be attached to the board or sheet. And the like, and a method of adhering with a binder of heat fusion. -Second Embodiment-In the inner wall member 5 and the wall structure of the first embodiment, a heat insulating material layer 40 is used instead of the heat insulating material layer 4, and a powder containing sheet-like material is used instead of the powder containing sheet-like material 7. Item 17 can be used. As shown in FIGS. 3 and 4, the heat insulating material layer 40 has a large number of protrusions 30 on the surface opposite to the surface laminated with the inner wall board 1. The protrusion 30 is a cylinder, a cone,
In the form of a prism, a pyramid, a truncated cone, a truncated pyramid, a hemisphere, a line (for example, a line extending in the vertical direction), the same height as the total of the thickness of the powder-containing sheet material 17 and the width of the ventilation layer 6. Have
It is provided so as to form a vertical air passage in the wall structure. The heat insulating material layer 40 including the protrusions 30 is integrally formed so that the heat insulating material has such a shape, or is separately formed and bonded so as to be integrated by an adhesive or heat fusion. Can be done. The powder-containing sheet-like material 17 has the protrusion 3 in the powder-containing sheet-like material 7.
The powder-containing sheet 7 is the same as the powder-containing sheet 7 except that it has a hole 91 (see FIG. 5) through which 0 can pass, and the edge portion of the hole 91 is an adhesive portion 90. However, the second
In the wall structure of the embodiment, the ventilation layer 6 can be formed by using the protrusion 30 without using the furring strip. By doing so, the workability can be further improved.

-Third Embodiment-In the inner wall member 5 and the wall structure of the first and second embodiments, the powder-containing sheet-like materials 7 and 17 have a planar space between the surface sheets 9 and 9. It is possible to partition the powder 8 into a large number of small spaces that are arranged in the small space. For example, as shown in FIG. 1B and FIG. 2 or FIG. 5, the surface sheets 9 and 9 are partially bonded (bonded part 90), and the powder 8 is bonded to the bonded part 9.
It is divided by 0 into a cell-shaped unit structure. That is, the sheets 9 have a lattice structure (or cell structure) by being partially bonded, and the powder 8 is divided and held inside the sheet 9. Since the powder 8 is filled inside the cell structure surrounded by the adhesive portion 90 as described above, the movement of the powder 8 is hindered by the adhesive portion 90,
It is possible to suppress deterioration of sound absorption performance due to uneven distribution of powder.

The method of partially adhering the sheets 9 and 9 is not particularly limited, and for example, sewing with a thread,
Examples of the method include a method in which an adhesive or a pressure-sensitive adhesive is attached to the sheet for adhesion, and a heat fusion binder is used for adhesion. That is, it suffices if the bonded portion can be maintained within the range of normal handling. As the size of the cell portion surrounded by the adhesive portion of the sheet, if it is usually in the range of several cm to several tens cm, it does not affect the sound absorption characteristics, but the smaller the cell size,
There is an advantage that the cell structure that is broken by cutting or the like is small and the spill of powder is reduced.

In the third embodiment, as the top sheet 9, the sheets 9 are adhered to each other.
It is desirable that the material has a heat fusion property. Alternatively, when the surface sheets 9 are adhered to each other with a binder or the like, the surface sheet 9 does not need to have adhesiveness, adhesiveness, or heat-sealing property, and the powder containing the above-described first and second embodiments is contained. The same material as the sheet 9 used for the sheet-shaped materials 7 and 17 can be used.

-Fourth Embodiment-In the inner wall member 5 and the wall structure of the first and second embodiments, powders as shown in FIGS. 8 to 9 are used instead of the powder-containing sheet-like materials 7 and 17. The containing sheet material 27 can be used. In the sheet-shaped material 27, in the sheet-shaped materials 7 and 17, the space between the topsheets 9 and 9 is filled with the porous base material 93, and the powder 8 is included in the voids of the porous base material 93. Other than the above (see FIG. 10), they are the same as the sheet-shaped materials 7 and 17, respectively.

The porous base material 93 is a sheet-like porous material serving as a skeleton, and is, for example, a polyester non-woven fabric, rayon, nylon, polypropylene non-woven fabric, a fiber structure such as glass wool or rock wool, urethane foam and the like. Examples of the foamed resin material include In the fourth embodiment, the surface sheet 9 has adhesiveness when it is adhered to the porous base material 93 and integrated as a powder-containing sheet material.
It is desirable to have adhesiveness and heat fusion. Or,
When the surface sheet 9 and the porous base material 93 are bonded to each other with a binder or the like, the surface sheet 9 does not need to have adhesiveness, adhesiveness, or heat fusion property, and the first and second embodiments described above The same material as the sheet 9 used for the powder-containing sheet-like materials 7 and 17 can be used.

-Fifth and Sixth Embodiments-In the inner wall member 5 and the wall structure of the first and second embodiments, instead of the powder-containing sheet-like materials 7 and 17, as shown in FIG. Any powder-containing sheet material 37 can be used. In the sheet-like material 37, in the sheet-like materials 7 and 17, a lattice-like structure (a structure 94 woven into a mesh in FIG. 11) is sandwiched in the space between the surface sheets 9 and 9, and the structure 94 Are the same as the sheet-shaped materials 7 and 17, respectively, except that they have a large number of cells arranged in a plane and open on the front and back sides, and the powder 8 is contained in the voids of the structure 94.

Alternatively, in the inner wall member 5 and the wall structure of the first and second embodiments, a powder-containing sheet material 47 as shown in FIG. 12 is used instead of the powder-containing sheet materials 7 and 17. Can be used. Sheet material 4
7 is a sheet-like material 7 and 17 and has a lattice-like structure (the honeycomb 9 in FIG. 12) in the space between the surface sheets 9 and 9.
5) is sandwiched, and the honeycomb 95 has a large number of cells having front and back surfaces arranged in a plane, and the powder 8 is contained in the voids of the honeycomb 95. Are the same as

The openings of the structure 94 and the honeycomb 95 are closed by the surface sheet 9. As shown in FIG. 11, the lattice-shaped structure that serves as the skeleton of the powder-containing sheet-like material is
Examples thereof include those having a mesh shape, or those having a honeycomb shape as shown in FIG. 12, and more specifically, a polymer sheet having a mesh shape, a paper honeycomb and the like can be mentioned, but the invention is not limited thereto. It is not something that will be done. However, from the viewpoint of handleability as a sheet, it is even more desirable that the lattice-like structure has flexibility.

In the fifth and sixth embodiments, the topsheet 9
As to the adhesiveness, when it is adhered to the structure 94 or the honeycomb 95 to be integrated as a powder-containing sheet,
It is desirable to have adhesiveness and heat fusion. Or,
When the surface sheet 9 and the structural body 94 or the honeycomb 95 are bonded to each other with a binder or the like, the surface sheet 9 does not need to have adhesiveness, adhesiveness, or heat-sealing property, and the first and second embodiments described above are performed. The same material as that of the sheet 9 used for the powder-containing sheet-shaped materials 7 and 17 in the form may be used.

-Seventh Embodiment- In each of the inner wall material 5 and the wall structure of the first to sixth embodiments, the heat insulating material 4 has a bulk density of 200 kg / m ³ or less and 1.0 × 10 ³ to 1. A first porous material having a Young's modulus in the range of 0 × 10 ⁶ N / m ² can be used.
With such a structure, it is possible to provide more excellent sound absorbing performance in the low frequency range as compared with the case where the heat insulating material 4 is not the first porous material.

The first porous material is not particularly limited as long as it has a bulk density of 200 kg / m ³ or less and a Young's modulus of 1.0 × 10 ^{3 to} 1.0 × 10 ⁶ N / m ² . Usually, fibrous materials made of inorganic and organic fibers such as rock wool, glass wool, and non-woven fabric, and foamed resin bodies such as urethane are used. When the bulk density or Young's modulus of the first porous material is out of the above range, it becomes difficult to resonate the sheet-like material, and the sound absorbing action in the low frequency range may be reduced. The density and Young's modulus of the first porous material are preferably selected in the optimum range according to the thickness of the porous material used. When reducing the thickness of the porous material, it is preferable to select one having a relatively low bulk density and a small Young's modulus.

Normally, the first porous material having a bulk density of 200 kg / m ³ or less, such as rock wool or glass wool, has a density of 5
It exhibits sound absorption characteristics in the mid-high range above 00 Hz, but has almost no sound absorption effect in the low frequency range. However, in the case of the seventh embodiment, the sound absorbing action in the low frequency range is enhanced by the sound absorbing action by the resonance of the powder-containing sheet-like material having the first porous material as the spring. Further, since the powder-containing sheet-like material has a sound-transmitting property, the sound wave transmitted through the powder-containing sheet-like material enters the inside of the first porous material, so that the sound absorbing characteristic in the middle and high range is also provided. Can be given. Therefore, the material of the first porous material to be laminated is arbitrarily selected according to the thickness of the powder-containing sheet material, the type of powder to be filled, and the physical properties.

-Eighth Embodiment- In the inner wall member 5 and the wall structure of the seventh embodiment, the inner wall board 1 has a bulk density in the range of 300 to 500 kg / m ³ and 1.0 × 10 ⁶ to 1. A second porous material having a Young's modulus within the range of 0.0 × 10 ⁸ N / m ² can be used. With such a structure, it is possible to provide more excellent sound absorbing performance in the low frequency range as compared with the case where the heat insulating material 4 is not the first porous material.

The second porous material has a bulk density of 300 to 50.
Within the range of 0 kg / m ³ , Young's modulus 1.0 × 10 ⁶ ~
It is not particularly limited as long as it is within the range of 1.0 × 10 ⁸ N / m ² , but specifically, rock wool sound absorbing plate composed of rock wool fiber and binder, inorganic fiber such as rock wool, glass wool, Examples include boards molded with a binder such as a phenol resin, or foamable resin boards such as urethane boards.

When the bulk density or Young's modulus of the second porous material is out of the above range, it becomes difficult to resonate the sheet-like material,
There is a risk that the sound absorption effect in the low frequency range will be reduced. Second
The density and Young's modulus of the porous material are preferably selected in the optimum range according to the thickness of the porous material used. When reducing the thickness of the second porous material, it is preferable to select a material having a relatively low bulk density and a small Young's modulus. The second porous material has a bulk density of 300 to 500 kg / m ³ and a Young's modulus of 1.0 × 10 ^{6 to} 1.0 × 10 ⁸ N / m ² , so that it is used as a board. Can be handled, and at the same time, a sound absorbing effect as a porous material in the mid-high range and a sound absorbing effect in the low frequency range of the powder-containing sheet material can be obtained at the same time.

-Ninth Embodiment- In the inner wall member 5 and the wall structure of each of the first to sixth embodiments, the heat insulating material 4 has a bulk density in the range of 300 to 500 kg / m ³ and 1.0 × 10 5. ^{6 to} 1.0 × 10 ⁸ N / m ²
A second porous material having a Young's modulus within the range of can be used. With such a structure, it is possible to provide more excellent sound absorbing performance in the low frequency range as compared with the case where the heat insulating material 4 is not the first or second porous material.

The second porous material has a bulk density of 300 to 50.
Within the range of 0 kg / m ³ , Young's modulus 1.0 × 10 ⁶ ~
It is not particularly limited as long as it is within the range of 1.0 × 10 ⁸ N / m ² , but specifically, rock wool sound absorbing plate composed of rock wool fiber and binder, inorganic fiber such as rock wool, glass wool, Examples include boards molded with a binder such as a phenol resin, or foamable resin boards such as urethane boards.

When the bulk density or Young's modulus of the second porous material is out of the above range, it becomes difficult to resonate the sheet-like material,
There is a risk that the sound absorption effect in the low frequency range will be reduced. Second
The density and Young's modulus of the porous material are preferably selected in the optimum range according to the thickness of the porous material used. When reducing the thickness of the second porous material, it is preferable to select a material having a relatively low bulk density and a small Young's modulus. The second porous material has a bulk density of 300 to 500 kg / m ³ and a Young's modulus of 1.0 × 10 ^{6 to} 1.0 × 10 ⁸ N / m ² , so that the elastic modulus is Is larger than the bulk elastic modulus of air by one order or more, and the sound absorbing effect due to the resonance of the powder-containing sheet material cannot be obtained, but the advantage that it can be handled as a board is obtained. Furthermore, by laminating the second porous material and the powder-containing sheet-like material, the sound absorbing effect in the mid-high range as a porous material and the sound absorbing effect in the low frequency range of the powder-containing sheet-like material. Can be obtained at the same time.

The inner wall material of the present invention can be handled as an inner wall panel provided with the inner wall board, the heat insulating material layer, and the powder-containing sheet material. The inner wall material may have a frame body used for attachment to a base material or the like, if necessary.

[0058]

Hereinafter, specific examples of the present invention will be described.
The present invention is not limited to the examples below. (Embodiment 1) In the inner wall material 5 and the wall structure shown in A of FIG. 1, the inner wall board 1 is a gypsum board (thickness 12 mm),
The heat insulating material 4 has a density of 100 kg / m ³ and a Young's modulus of 2 × 10 ^5.
N / m ² rock wool (80 mm thick) is used. The outer wall material 2 is an ALC plate (autoclave-cured lightweight cellular concrete plate) or asbestos cement plate (both having a thickness of 12 m).
m) is used. The powder-containing sheet material 7 is a surface sheet 9
This is a sheet having a thickness of 5 mm, in which the powder 8 is closed by.
The powder 8 has an average particle size of 150 μm and a bulk density of 0.3 kg.
A silica powder of / m ³ (having a frequency characteristic of peak type sound absorption coefficient) is used. The topsheet 9 has a thickness of 200 μm,
A glass cloth having a mesh diameter of about 20 μm and having air permeability. The outer peripheral portions of the topsheets 9 are adhered to each other with a heat-fusible binder, and the space between the sheets 9 is filled with the powder 8. A sheet-like material 7 in which the powder 8 is closed by a glass cloth 9 in order to prevent the powder 8 from spilling.
Therefore, it is easy to handle and has a high sound absorbing characteristic in the low frequency range due to the vertical vibration of the powder 8. Moreover, in the wall structure of the house formed by using the inner wall material 5, as shown in FIGS. 1A and 13, air flows upward in the wall, so that dew condensation in the wall is prevented.

(Embodiment 2) The inner wall member 5 and the wall structure shown in FIGS. 3 and 4 are the same as those in Embodiment 1 except that the heat insulating member 40 is used instead of the heat insulating member 4 and the powder-containing sheet-like material 7 is used.
Is the same except that 17 is used instead of. The heat insulating material 40 has a density of 100 kg / m ³ and a Young's modulus of 2 × 10 ⁵ N /
It is m ² rock wool (thickness 98 mm), and is made with a large number of protrusions 30 at a pitch of 50 mm on the surface of the outer wall material side. The protrusion 30 is a truncated cone having a bottom diameter of 50 mm and a height of 18 mm. The heat insulating material 40 has a thickness of about 80 mm excluding the protrusions 30. The powder-containing sheet material 17 is
As shown in FIG. 5, the diameter is 5 at the same pitch as the protrusions 30.
Sheet material 7 containing powder except that it has 0 mm holes
Is the same as The projecting portion 30 projects from the hole 91 of the powder-containing sheet-like material 17 and contacts the inner surface of the outer wall member 2.

(Embodiment 3) The inner wall material 5 and the wall structure of the embodiment 3 are the same as those of the embodiment 1 or 2 except that the inner wall board 1 is plywood (thickness 12 mm) and the heat insulating material 4 has a density of 80 kg / m. ^3. Same as Example 1 or 2 except that glass wool (80 mm thick) having Young's modulus of 1 × 10 ⁵ N / m ² was used.

(Embodiment 4) The inner wall member 5 and the wall structure of the fourth embodiment are the same as those of the third embodiment except that the inner wall board 1 has a density of 400 kg / m ³ and a Young's modulus of 7 × 10 ⁶ N / m. ²
The same as Example 3 except that the rock wool (thickness: 9 mm) is used. (Embodiment 5) The inner wall member 5 and the wall structure of Embodiment 5 are the same as those of Embodiments 1 to 4, but the surface sheets 9 are partially adhered to each other (adhesive portion 90).
It is the same as in Examples 1 to 4 except that the powder 8 is filled inside the cell structure surrounded by. Therefore, it is possible to prevent the sound absorbing performance from deteriorating due to the uneven distribution of the powder 8.

Example 6 The inner wall member 5 and the wall structure of Example 6 are the same as those of Examples 1 to 4 except that the following points are different. A powder-containing sheet material 27 is used in place of the powder-containing sheet material 7 or 17, a polyester film having a thickness of 25 μm is used as the surface sheet 9, and a polypropylene-based nonwoven fabric which is a sheet-shaped fiber structure as the porous substrate 93. The powder 8 is contained in the voids of the nonwoven fabric, and the total thickness of the powder-containing sheet 27 is about 2 mm.

(Embodiment 7) The inner wall member 5 and the wall structure of Embodiment 7 are the same as those of Embodiments 1 to 4, but instead of the powder-containing sheet material 7 or 17, the powder-containing sheet material 47.
Is the same except that is used. Sheet material 47 containing powder
As shown in FIG. 12, the powder 8 is contained inside the cells of the paper honeycomb 95, which is the cell structure serving as the skeleton. Further, a 25 μm-thick polyester film is provided with an adhesive layer on the front and back surface openings of the paper honeycomb 95.
The adhesive polyester film (surface sheet 9) provided with a thickness of 5 μm is adhered to form a sheet. The total thickness of the powder-containing sheet material 47 is about 2 mm.

(Embodiment 8) The inner wall material 5 and the wall structure of Embodiment 8 are the same as those of Embodiments 1 to 7, but the powder 8 is silica powder having an average particle diameter of 150 μm and a bulk density of 0.3 kg / m ³ . Body (having frequency characteristics of peak type sound absorption coefficient),
A mixed powder obtained by mixing silicon carbide whiskers (average fiber diameter 0.4 μm, fiber length within the range of 5 to 20 μm, spring constant 10 N / m) as a fine fiber structure at a weight ratio of 1: 1 is used. Except for this, it is the same as Examples 1 to 7.

(Example 9) The inner wall member 5 and the wall structure of Example 9 are the same as those of Examples 1 to 7 except that the powder 8 is silica powder having an average particle diameter of 150 μm and a bulk density of 0.3 kg / m ³ . Body (having frequency characteristics of peak type sound absorption coefficient),
Mixed powder obtained by mixing acicular powder of calcium silicate which is a fine fiber structure (average fiber diameter 1 μm, fiber length within the range of 5 to 10 μm, spring constant 16 N / m) at a weight ratio of 1: 1. The same as Examples 1 to 7 except that is used.

(Example 10) The inner wall member 5 and the wall structure of Example 10 are the same as those of Examples 1 to 7 except that the powder 8 is silica powder having an average particle diameter of 150 μm and a bulk density of 0.3 kg / m ³ . For each particle of the body (having frequency characteristics of peak-type sound absorption coefficient), a silicon carbide whisker which is a fine fiber structure (average fiber diameter 0.4 μm, fiber length 5 to 20 μm, spring constant 10 N / m) Particles (the weight ratio of the powders to each other is 1:
Same as Examples 1 to 7 except that a powder obtained by spray coating a mixed solution of 1) and an aqueous urethane emulsion binder, drying in hot air and adhering it.

(Embodiment 11) The inner wall member 5 and the wall structure of Embodiment 11 are the same as those of Embodiments 1 to 7, but the powder 8 is silica powder having an average particle diameter of 150 μm and a bulk density of 0.3 kg / m ³ . Each particle of the body (having frequency characteristics of peak type sound absorption coefficient) has acicular powder of calcium silicate (average fiber diameter 1 μm, fiber length 5 to 10 μm, spring constant 16 N / m) particles (powder weight ratio 1:
Same as Examples 1 to 7, except that a mixed solution of 1) and a water-based urethane emulsion binder is spray-coated and the powder having a structure which is dried in hot air and adhered is used.

(Embodiment 12) The inner wall member 5 and the wall structure of Embodiment 12 are the same as those of Embodiments 1 to 11 except that the heat insulating material 4 has a thickness of 25 mm, a density of 24 kg / m ³ , and a Young's modulus of 3 ×.
The same except that 10 ³ N / m ² of rockwool fiber is used. (Embodiment 13) The inner wall member 5 and the wall structure of the embodiment 13 are the same as those of the embodiment 12 except that the inner wall board 1 has a thickness of 12 mm, a density of 400 kg / m ³ , and a Young's modulus of 7 × 10.
^The same except that a rock wool sound absorbing plate of ⁶ N / m ² is used.

(Example 14) The inner wall member 5 and the wall structure of Example 14 are the same as those of Examples 1 to 11 except that the heat insulating member 4 has a thickness of 12 mm, a density of 400 kg / m ³ , and a Young's modulus of 7
The same except that a rock wool sound absorbing plate of × 10 ⁶ N / m ² is used. As the powder 8 in the powder-containing sheet material of the present invention,
The present invention is not limited to those shown in Examples 1 to 14 above. However, as the powder, a first powder having an average particle diameter of 0.1 to 1000 μm and a bulk density in the range of 0.1 to 1.5 kg / m ³ and a spring constant of 1 × 10 ² N / m or less. Or a mixed powder with a second powder composed of fine fibers of 0.1 or 0.1
A first powder having an average particle size of ˜1000 μm and a bulk density in the range of 0.1 to 1.5 kg / m ³ and a spring constant of 1 × 10 ² N
It is even more desirable to use a second powder composed of fine fibers having a density of / m or less and the fine fibers attached to the surfaces of the particles of the first powder. That is, by using the powder having excellent sound absorbing characteristics, the sound absorbing performance in the low frequency range can be exhibited even if the filling amount of the powder, that is, the thickness of the powder layer is reduced. Therefore, it becomes possible to satisfy both the sound absorbing performance and the handleability as a material in the powder-containing sheet material molded into a sheet shape.

[0070]

The inner wall material of the present invention is an acoustically transparent surface sheet of an inner wall board, a heat insulating material layer integrally laminated on one side of the inner wall board, and a powder exhibiting sound absorbing performance by vibrating particles. Since it is provided with the powder-containing sheet-like material that is laminated and integrated with the heat insulating material layer, which is filled in the space between the two, it is possible to reduce the construction work, and the ventilation layer can be secured to improve the ventilation inside the wall. Effective in preventing dew condensation. Further, the powder-containing sheet material can impart sound insulation performance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a wall structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a powder-containing sheet material 7.

FIG. 3 is a sectional view showing a wall structure according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing an inner wall material of a second embodiment of the present invention.

FIG. 5 is a view showing a cross-sectional structure of a powder-containing sheet material 17.

FIG. 6 is a perspective view of the powder-containing sheet material 17.

FIG. 7 is a conceptual diagram of powder in which fine fiber bodies are attached to the surface of powder particles.

FIG. 8 is a diagram showing a cross-sectional structure of a powder-containing sheet material 27.

FIG. 9 is an exploded perspective view showing a powder-containing sheet material 27.

FIG. 10 is a conceptual diagram showing an internal structure of a powder-containing sheet material 27.

FIG. 11 is an exploded perspective view showing a powder-containing sheet material 37.

FIG. 12 is an exploded perspective view showing a powder-containing sheet material 47.

FIG. 13 is an explanatory view showing an example of ventilation in a house.

FIG. 14 is a cross-sectional view showing a conventional wall structure.

[Explanation of symbols]

 1 inner wall board 2 outer wall material 4 heat insulating material 5 inner wall material 6 ventilation layer 7 powder-containing sheet material 8 powder 9 acoustically transparent surface sheet 17 powder-containing sheet material 27 powder-containing sheet material 37 powder Body-containing sheet material 47 Powder-containing sheet material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Ohnishi 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Hideyuki Ando, 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (16)

[Claims] 1. A wall board used for an inner wall of a building, a heat insulating material layer laminated and integrated on one side of the wall board, and a powder-containing sheet material laminated and integrated on the heat insulating material layer, An inner wall material, wherein the powder-containing sheet-like material is filled with powder that exhibits sound absorbing performance by vibration of particles in a space between acoustically transparent surface sheets. 2. A wall board used for an inner wall of a building, a heat insulating material layer having a large number of protrusions on one surface and the other surface laminated and integrated on one surface of the wall board, and a large number of the protrusions penetrating therethrough. And a powder-containing sheet-like material having a hole of (1) and laminated and integrated with the heat-insulating material layer, wherein the tip of the protruding portion protrudes from the hole of the powder-containing sheet-like material. An inner wall material, which is made by filling a space between acoustically transparent surface sheets with powder that exhibits sound absorbing performance by vibrating particles. 3. The wall board is at least one selected from the group consisting of plywood and gypsum board, and the heat insulating material is at least one selected from the group consisting of glass wool, rock wool and polyurethane foam. The inner wall material according to claim 1 or 2. 4. The wall board is rock wool board,
It is at least one selected from the group consisting of a rigid foamed urethane board and a rigid foamed styrene board, and the heat insulating material is at least one selected from the group consisting of glass wool, rock wool and polyurethane foam. Inner wall material described in. 5. The space between the topsheets is divided into a large number of small spaces arranged in a plane, and the powder is filled in the small spaces. Inner wall material described in crab. 6. The space according to claim 1, wherein a space between the surface sheets is filled with a porous base material, and the powder is contained in voids of the porous base material. Inner wall material. 7. A lattice-like structure is sandwiched in a space between the surface sheets, the lattice-like structure has a large number of cells arranged in a plane and having front and back openings, and the powder is The inner wall material according to any one of claims 1 to 4, which is contained in a cell. 8. The powder according to claim 1, wherein the powder has an average particle size of 0.1 to 1000 μm and a bulk density in the range of 0.1 to 1.5 kg / m ³ . Inner wall material. 9. A first powder having a mean particle size of 0.1 to 1000 μm and a bulk density in the range of 0.1 to 1.5 kg / m ³ , and a spring constant of 1 × 10 ² N. The inner wall material according to any one of claims 1 to 7, which is a mixed powder with a second powder composed of fine fibers having a particle size of / m or less. 10. A first powder having an average particle size of 0.1 to 1000 μm and a bulk density in the range of 0.1 to 1.5 kg / m ³ , and a spring constant of 1 × 10 ² N. The inner wall material according to any one of claims 1 to 7, further comprising a second powder composed of fine fibers having a particle diameter of / m or less, and the fine fibers are attached to the surfaces of the particles of the first powder. 11. The inner wall material according to claim 1, wherein the powder-containing sheet material has a thickness of 5 mm or less. 12. The heat insulating material is 200 kg / m.^ThreeThe following umbrella
Density and 1.0 × 10^Three~ 1.0 × 10 ⁶N / m^TwoWithin
The first porous material having a Young's modulus and the Young's modulus.
The inner wall material according to any one of 1. 13. The wall board comprises 300 to 500 kg / m.
^ThreeAnd bulk density within the range of 1.0 × 10 ⁶~ 1.0 × 10
⁸N / m^TwoA second porous material having a Young's modulus within the range of
The inner wall material according to claim 12, wherein 14. The heat insulating material has a bulk density in the range of 300 to 500 kg / m ³ and 1.0 × 10 ^{6 to} 1.0 × 10 ⁸ N / m.
^{A second} porous material having a Young's modulus within the range of ² ,
The inner wall material according to any one of claims 1 to 11. 15. The inner wall material according to claim 13 or 14, wherein the second porous material is a rock wool sound absorbing plate composed of rock wool fibers and a binder. 16. The inner wall material according to claim 1, wherein the wall board is disposed on the indoor side of a building, and the ventilation is provided so as to face the powder-containing sheet material of the inner wall material. A wall structure comprising: an outer wall material disposed on the outdoor side of the building through a layer.