JP2003193669A - Soundproof boundary-floor structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soundproof boundary-floor structure effectively preventing a propagation to a ceiling on a lower floor of an impulse on an upper floor generated on a flooring and having soundproofness having high performance in which both soundproof performance of a heavy impulsive sound and a lightweight impulsive sound are improved. <P>SOLUTION: In the soundproof boundary-floor structure in which a board material 3, a vibration-control soundproof material 2 and the flooring 1 are laminated successively on a floor backing material 5 through spacers 4, contact areas among the spacers 4 disposed between the floor backing material 5 and the board material 3 and the floor backing material 5 are 3% to 30% of a floor backing-material area. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof floor structure suitable for use in the floor of a house or the like.

[0002]

2. Description of the Related Art In recent years, wooden flooring floors are often used in general detached houses, and floor impact sound on the upper floors is easily transmitted to the lower floors. There is. In addition, higher soundproofing performance is required for two-family houses and small-scale housing.

In order to improve flooring floor impact noise,
For example, a method is known in which a binder such as a thermoplastic resin, rubber or asphalt and an aggregate such as sand iron, slag or iron powder are kneaded and processed into a sheet, and a sheet in which a non-woven fabric is laminated as a face material on the surface thereof is used. (E.g.
5777).

Further, in order to make it difficult to transmit vibrations and sounds generated in the upper floor to the ceiling of the lower floor, hanging trees or the like are attached to the floor joists (beams) at a predetermined interval, and a rim is attached to the lower part of the hanging tool. A so-called suspended ceiling, which is installed at regular intervals, is often used. Especially in framed wall construction houses, suspended ceilings are often used,
For example, as described in Japanese Unexamined Patent Publication No. 08-144424, an attempt has been made to reduce particularly heavy impact noise by devising a suspending device so as to block the impact on the upper floor. Further, in recent years, in the case of floors with floors, it is becoming more common to take measures against floor impact noise by using a suspended ceiling as the lower floor ceiling and disposing a soundproof sheet under the flooring.

[0005]

[Problems to be Solved by the Invention] However, in recent years, the number of detached two-family houses with different living hours has increased,
Even if you place a suspended ceiling or soundproof sheet as described above,
Soundproofing performance that satisfies both heavy floor impact sound and lightweight floor impact sound has not been obtained. According to the study by the present inventor, it is possible to improve the performance by increasing the thickness of the soundproof sheet, but the flooring has a general thickness of 12 mm.
In this case, if the thickness of the soundproof sheet exceeds 10 mm, the effect due to the increase in the thickness of the sheet is hard to be expressed, and there is a limit to the improvement of the soundproof performance. The present invention has been made in view of the above problems of the conventional floor structure, and an object thereof is to provide a high-performance soundproofing floor structure.

[0006]

In order to achieve the above object, the present invention is a floor structure in which a plate material, a vibration damping and sound insulating material and a flooring are sequentially laminated on a floor base material via a spacer. And the contact area between the spacer disposed between the floor base material and the plate material and the floor base material is 3 of the floor base material area.
Provided is a soundproofing floor structure that is at least 30% and at most 30%.

The present invention will be described in more detail below. The vibration damping and soundproofing material of the present invention preferably has an areal density of 5 kg / m ² or more. If it is less than 5 kg / m ² , sufficient soundproof performance may not be obtained. Further, the vibration-damping and sound-proofing material is preferably a sheet-like vibration-damping and sound-proofing material having a layer whose base material is a mixture of a high specific gravity filler and resin, rubber, or asphalt. As the high specific gravity filler, a filler having a specific gravity of preferably 2 or more, more preferably 4 or more is used. When the specific gravity is less than 2, high vibration damping and soundproofing cannot be obtained in many cases.

As the high specific gravity filler, sand iron, iron powder, iron oxide, calcium carbonate, zircon sand, chromite sand, iron slag powder, silica sand, lead powder, tin oxide, zinc oxide,
Barium sulfate, iron sulfide, mica, aluminum hydroxide,
Talc, clay, etc. are used. The high specific gravity filler can be used in any form such as powder, fibrous form, and flaky form, but powder is preferable in terms of good mixing / dispersion. The particle size of the high specific gravity filler is preferably 2 mm or less, more preferably 5 μm to 500 μm. If it exceeds 2 mm, it is difficult to mix uniformly, so that the performance of the obtained vibration damping and soundproofing material tends to be non-uniform.

As the matrix in which the high specific gravity filler is dispersed, at least one of resin, rubber and asphalt can be selected (of course, a mixture of two or more kinds may be used). The resin is preferably a thermoplastic resin, for example, vinyl chloride resin, polypropylene resin,
Polyethylene resin, acrylic resin and the like are preferably used. As the rubber, natural rubber, SBR (styrene butadiene rubber), NBR (nitrile rubber), CR (chloroprene rubber), BR (butadiene rubber), IR (isoprene rubber) and the like can be used, and are not particularly limited. Absent.

As the asphalt, it is possible to use, for example, natural asphalt, petroleum asphalt such as straight asphalt, blown asphalt, compound asphalt type 3, type 4, cutback asphalt and the like. For the above resins, rubber, and asphalt,
A plasticizer for adjusting the viscosity, a processing aid such as a thickener and a gelling agent, a pigment and the like may be added. In the case of the sheet-shaped vibration damping and sound-insulating material composed of the high specific gravity filler, especially iron oxide powder (specific gravity 5.5), and asphalt, the asphalt content is preferably 15 to 30% by weight.

A preferred composition containing a resin or the like constituting the vibration damping and soundproofing material is, for example, 100 parts by weight of a styrene / isoprene block copolymer, 20 to 1000 parts by weight of an ethylene / vinyl acetate copolymer and a high specific gravity inorganic powder. Three
A resin composition containing 100 to 1000 parts by weight, 100 parts by weight of a styrene-isoprene block copolymer,
Examples thereof include a resin composition containing 10 to 500 parts by weight of an ethylene / vinyl acetate copolymer, 10 to 500 parts by weight of a petroleum resin, and 300 to 1000 parts by weight of mica or calcium carbonate. Further, as a preferable composition containing asphalt that constitutes the vibration damping and soundproofing material, blown asphalt, 3 types of compound asphalt, or a specific gravity of 4 to 100 parts by weight of these asphalts is used.
6 to 100 parts by weight of iron oxide powder and 0 to 400 of calcium carbonate.

The thickness of the vibration damping and soundproofing material is preferably 2 to 20 mm, more preferably 3 to 12 mm. When it is less than 2 mm, the vibration damping and soundproofing properties are insufficient, and when it exceeds 20 mm, the vibration damping and soundproofing material becomes too heavy, resulting in poor workability. The specific gravity of the base material of the vibration damping and soundproofing material is preferably 1.5 to 4.0, and 1,5
If it is less than 4, vibration damping and soundproofing is insufficient, and if it exceeds 4, it becomes too heavy and the workability becomes poor. The areal density (weight per unit area) obtained by multiplying the thickness and the specific gravity is preferably 5 kg / m ² or more. The upper limit of areal density is not particularly recognized,
If it is too high, problems such as workability and load bearing capacity of the vehicle body may occur due to an increase in weight, so caution is required. In addition, vibration damping and soundproofing materials have laminated buffer layers, non-woven fabric, paper,
The sheet may be reinforced with a resin film or the like.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be shown below and further described with reference to the drawings. FIG. 1 is a schematic sectional view showing an example of a soundproof floor structure of the present invention, and FIG. 2 is a schematic sectional view showing an example of a conventional suspended ceiling system.
As illustrated in FIG. 1, the soundproof floor structure of the present invention has a floor base material 5 on which a plate material 3, a vibration damping soundproof material 2 and a flooring 1 are laminated in this order via a spacer 4, and a joist ( A field edge 8 is provided under a beam 6 via an attached hanging tool 7, and a ceiling material 9 (gypsum board) on the lower floor is attached to the field edge 8.

The floor base material 5 is not particularly limited, but for example, plywood, particle board, OSB board, MFD board, gypsum board, ALC, slab deck and the like are preferably used.

The plate material 3 in the present invention is a spacer 4
The plywood, particle board, OSB board, MFD board, gypsum board, etc. are preferably used.

In the present invention, the spacer 4 and the plate member 3 are
It is arranged between the floor base materials 5. The contact area between the spacer 4 and the floor base material 5 needs to be 3% or more and 30% or less. If it is less than 3%, it may be difficult to ensure a uniform thickness of the gap even if a spacer is arranged, so that the soundproofing performance may deteriorate and the floor may not be horizontal. 30%
When it exceeds, the propagation of vibration becomes high, and it becomes difficult to improve the soundproofing performance. The shape of the spacer is not particularly limited, such as a strip shape (striped shape), an island shape, a lattice shape, or a random arrangement, but a strip shape is the most preferable in consideration of workability.

Further, the thickness of the spacer is preferably 0.1 mm or more and 3 mm or less, more preferably 0.3 mm or more and 1 mm or less. If it is less than 0.1 mm, vibration easily propagates and sufficient soundproof performance cannot be obtained. Also, 3 mm
If it exceeds, the compressive rigidity of the floor after construction will be low and the walking feeling will be poor. The spacer is preferably flexible, and examples thereof include resin and rubber foams.
The compressive elastic modulus is preferably 10 ³ Pa or more and 10 ⁷ Pa or less. 10 ³ compression rigidity of the floor after the construction is less than Pa is low, a bad will win walking feeling, 10 ⁷
If it exceeds Pa, vibration may easily propagate and sufficient soundproof performance may not be obtained. The compressive elastic modulus of the spacer in the present invention is measured according to JIS K7181. The spacer may be adhered to the floor base material or the plate material, or may not be adhered. Further, one or both of the front and back surfaces of the spacer may be subjected to an adhesive treatment or the like.

The flooring in the present invention is not particularly limited as long as it is generally used as a floor finishing material. For example, a single wood-based material, a laminated wood-based sheet, a wood-based material, a paper material, etc. Of the wood chips that are integrated by compression, wood fibers that are integrated by compression (fiber board),
Examples thereof include those made of resin and those obtained by laminating these surface decorative plates.

The soundproof floor structure of the present invention according to claim 1 is capable of reducing not only heavy floor impact sound but also light weight floor impact sound. It is possible to reduce the sound.

(Operation) The soundproof floor structure of the present invention is a floor structure in which a plate material, a vibration damping soundproof material and a flooring are sequentially laminated on a floor base material through a spacer, wherein the floor base material is The contact area between the spacer disposed between the base material and the plate material and the floor base material is 3% or more and 30% or less of the floor base material area. Since the spacer is arranged between the two, it is possible to reduce the propagation of the impact generated by the flooring to the ceiling of the lower floor and improve the soundproof performance. Further, when the surface density of the vibration damping and soundproofing material is set to 5 kg / m ² or more, the above performance can be exhibited at a high level.

[0021]

EXAMPLES Examples and comparative examples of the present invention will be described below.
A specific description will be given with reference to the drawings.

Example 1 As shown in FIG. 1, 2 × 10
A floor base material 3 (15 mm plywood) is fixed on a joist (beam) 6 (about 38 mm x 235 mm, disposition pitch 455 mm), and the plate material 3 (particle board, thickness) via a spacer 4 thereon. 10 mm), vibration-damping and sound-proofing material 2 (compared to 100 parts by weight of blown asphalt, 500 parts by weight of iron oxide powder having a specific gravity of 5.5 and an average particle size of 80 μm, specific gravity of about 2.7, thickness of 3 mm, surface density of about 11 kg / m ² ), and a wood flooring 1 having a thickness of 12 mm are laminated, and a field edge 8 (35 mm x 35 mm timber timber, arrangement pitch 303 mm) is placed under the joist 6 with respect to the joist 6 as shown in FIG. They were arranged vertically (crossed) and fixed with screws using no gaps. In addition, 7 is a hanging tool made of vinyl chloride resin. Next, the ceiling 9 on the lower floor through this field 8
Attach (gypsum board, thickness 12.5 mm), joist 6
Sound absorbing material (not shown, rock wool, 40 kg /
m ³ and thickness 55 mm) were arranged to obtain a soundproof floor structure. The spacer 4 is a foam type double-sided tape # 530 (thickness 0.8 mm, width 50 mm, compression elastic modulus 1.1 × 10 ⁵ Pa, single-sided adhesive processing) manufactured by Sekisui Chemical Co., Ltd. (Contact area 25%). No nails (finish nails) 15
It was fixed by hammering at a pitch of 0 mm.

(Example 2) A plate material (plywood 9
mm) was placed via a spacer. The spacer is Softlon S # 1001 (thickness 1 mm, width 40 mm, compression elastic modulus 0.8 × 10 ⁵ Pa, manufactured by Sekisui Chemical Co., Ltd.,
One-sided adhesive processing) was used, and they were arranged in strips at a pitch of 300 mm (contact area: about 13%). A vibration damping and soundproofing material and flooring were installed on the plate material. Each of the nails (finish nail) was driven in at a 150 mm pitch without using an adhesive. As a vibration damping and soundproofing material, a specific gravity of 5.5 and an average particle size of 80 with respect to 100 parts by weight of Bron asphalt
A sheet composed of 500 parts by weight of iron oxide powder having a particle size of about 2.7, a specific gravity of about 2.7, a thickness of 4 mm and an areal density of about 11 kg / m ² was used. Otherwise in the same manner as in Example 1, the soundproof floor structure shown in FIG. 1 was obtained.

(Example 3) A plate material (made by Yoshino Gypsum Co., Ltd .: gypsum board, tiger super hard;
5 mm) was placed via a spacer. As the spacer, Sekisui Chemical Co., Ltd. double-sided tape # 530 (thickness 0.8 mm, size: 60 mm × 60 mm, compression elastic modulus 1.1 × 10 ⁵ Pa) is used, and the so-called XY plane in the XY plane is used. 150 mm × 15 in the XY direction (ie, 150 mm × 15 in the XY direction).
One 60 mm × 60 mm spacer was arranged in the range of 0 mm. The contact area at this time was 16%). A vibration damping and soundproofing material and flooring were installed on the plate material. Each of the nails (finish nail) was driven in at a 150 mm pitch without using an adhesive. As a vibration damping and soundproofing material, for 100 parts by weight of Bron asphalt,
A sheet composed of 500 parts by weight of iron oxide powder having a specific gravity of 5.5 and an average particle size of 80 μm, having a specific gravity of 2.7, a thickness of 6 mm and an areal density of about 16 kg / m ² was used. Otherwise in the same manner as in Example 1, the soundproof floor structure shown in FIG. 1 was obtained.

(Comparative Example 1) The same as Example 1 except that the spacer 5 and the plate member 4 in FIG. 1 were not used, and the vibration damping and soundproofing material 2 was disposed directly on the floor base material 3. The floor structure shown in FIG. 2 was obtained.

(Comparative Example 2) A plate material (particle board, thickness 10 mm) was placed on the floor base material without using a spacer.
In the same manner as in Example 1 except that the
The floor structure shown in FIG. 2 was obtained.

(Comparative Example 3) As a spacer, double-sided tape # 530 manufactured by Sekisui Chemical Co., Ltd. (thickness 0.8 mm, width:
100 mm, compression elastic modulus 1.1 × 10 ⁵ Pa) was used, and the same floor structure as in Example 1 was used except that the contact area between the spacer and the floor base material (and the plate material) was 50%. Obtained.

(Acoustic Evaluation) With respect to the above Examples 1 to 3 and Comparative Examples 1 to 3, performance tests of light floor impact sound and heavy floor impact sound were conducted. [Test method] JIS A1418-1, and JIS
The floor impact sound level was measured by the measurement method and sound insulation grade based on A1418-2. The results are shown in Table 1 and Table 2.
Shown in. The compression elastic modulus of the spacer is JIS K 7
181, and was measured. The test piece is 50 mm x 50
mm × thickness (mm), and calculated by the following formula. Compression modulus (MPa) = (σ ₂ −σ ₁ ) / (ε ₂ −
ε ₁ ) where σ ₁ : compressive stress measured at strain value ε ₁ (MPa) σ ₂ : compressive stress measured at strain value ε ₂ (MP
a) ε ₁ : compression strain ε ₁ = 0.01 ε ₂ : compression strain ε ₂ = 0.03

[0029]

[Table 1]

[0030]

[Table 2]

In the acoustic evaluation of the lightweight floor impact sound, 250H
Since z and 500 Hz are related to the overall sound performance, it is possible to judge that a material excellent in this region (a material having a low noise level) is a vibration damping and soundproofing material having excellent acoustic performance. In the acoustic evaluation of heavy floor impact sound, 63Hz and 125Hz are related to the overall sound performance, so that the ones excellent in this area (the ones with low noise level) can be judged to be the vibration damping and soundproofing materials excellent in acoustic performance. .

[0032]

In the soundproof floor structure of the present invention, a plate material, a vibration damping soundproof material and a flooring are sequentially laminated on a floor base material through a spacer, and the floor base material and the plate material are arranged between them. Since the contact area between the installed spacer and the floor base material is 3% or more and 30% or less of the floor base material area, it is possible to effectively reduce the propagation of the impact generated by the flooring to the ceiling of the lower floor, and to reduce the weight. It has high performance soundproofing with improved soundproofing performance for both impact sound and lightweight impact sound. The surface density of the vibration damping and soundproofing material is 5
When it is more than Kg / m ² or when the compression elastic modulus of the spacer is 1
When it is 0 ³ Pa or more and 10 ⁷ Pa or less, the above effect can be more reliably exhibited. Further, when the suspended floor structure is adopted, the heavy floor impact sound can be further reduced.

[0033]

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a soundproof floor structure of the present invention.

FIG. 2 is a cross-sectional view showing an example of a conventional soundproof floor structure.

[Explanation of symbols]

1 ... Flooring 2 ... Vibration control and soundproofing material 3 ... Plate material 4 ... Spacer 5 ... Floor base material 6 ... joists 7 ... Hanging equipment 8 ... Noen 9 ... Gypsum board (ceiling material)

Claims (4)

[Claims] 1. A floor structure in which a plate material, a vibration damping material and a flooring are sequentially laminated on a floor base material via a spacer, and the floor structure is disposed between the floor base material and the plate material. The contact area between the spacer and the floor base material is 3 of the floor base material area.
% Or more and 30% or less, a soundproof floor structure. 2. The soundproof floor structure according to claim 1, wherein the vibration damping and soundproofing material has an areal density of 5 kg / m ² or more. 3. The soundproof floor structure according to claim 1, wherein the compression elastic modulus of the spacer is 10 ³ Pa or more and 10 ⁷ Pa or less. 4. The soundproof floor structure according to claim 1, wherein the ceiling of the lower floor is a suspended ceiling.