JPH01299956A - Soundproof floor material - Google Patents

Abstract

PURPOSE:To enhance noise insulating performance not only for a high-frequency high sound but also for a low-frequency low sound by laminating layers for attenuating sounds in a low and intermediate sound region, in a soundproof floor material. CONSTITUTION:The title floor material is constituted by integrating three layers: a surface layer 8 which has a decorative surface and consists of a composite plywood in which a noise insulation sheet 3 and plywood 2 and 4 are stuck together, an intermediate layer 9 in which a wire gauze 6 and foam sheets 5, 7 consisting of rubber, plastic foam, or the like are stratified, and a lower layer 10 in which iron powder, iron oxide powder and iron slag have been added to asphalt and kneaded into a plate shape. Since the intermediate layer 9 and the lower layer 10 attenuates the sounds in a low and intermediate sound range out of generated impact noise, an extremely excellent noise insulating performance for a floor impact sound can be obtained as a whole.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a soundproof flooring material, and is particularly useful as a soundproofing flooring material for the floors of high-rise apartment buildings, and is useful for reducing impact noise generated on floors above to downstairs. The present invention relates to a soundproof flooring material that has an excellent soundproofing effect on propagation of not only high-frequency sounds but also low-frequency sounds with low frequencies, and is capable of preventing floor noise desired by residents of apartment complexes due to its comprehensive soundproofing effect.

[Prior art] The floors of high-rise apartment buildings using conventional concrete or ALC temporary (foamed concrete cured with high-pressure steam in an autoclave! Fi) are made of concrete, slag or AL.
C. It is made of slag floor.

The propagation of these floor impact sounds has a low frequency of 63 to 25
It is extremely loud in the low frequency range of 0 hertz, which is a problem. Conventionally, efforts have been made to prevent noise by using carpets or jutetan on the floor, but pests such as mites and diseases (asthma) caused by the accumulation of dust are occurring. As a result, residents have recently begun to demand wooden flooring. However, when wooden flooring is used instead, the noise from downstairs becomes louder, which is another social problem that we often hear about.

Currently, various flooring material manufacturers are making efforts to improve the sound insulation performance of their soundproof floors, but the current situation is that sufficient effects have not yet been achieved.

Currently, the structure of general soundproof flooring materials manufactured by soundproof flooring manufacturers uses a composite plywood surface layer made of plywood and sound insulation sheets made of rubber, asphalt, plastic, etc., and then a layer of rubber, plastic foam, or Many soundproof flooring materials are used, with a cushioning sheet such as a mat or carpet made of fiber as the lower layer, and these two layers integrated into one. Although attempts have been made to improve it by processing it, sufficient sound insulation performance has not yet been achieved.

The soundproof flooring materials mentioned above have excellent sound insulation performance against high frequencies (1 to 4 km, Hertz) and medium sounds (500 Hertz), but they have excellent sound insulation performance for high frequencies (1 to 4 km, Hertz) and medium sounds (500 Hertz), but they have excellent sound insulation performance for high frequencies (63 to 250 Hertz).
Hertz) The sound insulation performance for bass sounds is poor.

This means that when attempting to reduce the impact force applied to the floor by using cushioning materials etc. with the intention of reducing sound 1, the vibration and sound of the floor generated by the impact force will work in the direction of deterioration. A part of the vibration energy is transferred from the high frequency range to the low frequency range, and as a result, a phenomenon occurs in which the sound pressure of bass sounds with a frequency of 63 to 250 Hz increases by 5 to 15 dB (decibels). Therefore, this phenomenon is the most difficult problem for researchers of soundproof flooring materials, and is the reason why it has not been solved yet.

[Problems to be Solved by the Invention] The present invention provides a soundproofing flooring material that is installed on the concrete/slag or ALC/slag upper floor to reduce and eliminate floor impact sound, especially the low sound, which propagates downstairs. Improves sound insulation effect,
Downstairs J, 1. Sound rating of S-standard buildings (A
The objective is to pass the floor impact sound level L-55 or L-50 for light sound (I419).

Other objects and novel features of the present invention will become apparent from the entire description and accompanying drawings.

[Means for solving the problem] and [Action 1] The soundproof flooring material according to the present invention has a decorative surface on its surface layer, and is made of rubber,
It is made of composite plywood made by laminating a sound insulating sheet made of plastic, asphalt, and/or cork with plywood, and the middle layer is made of one or more types of wire mesh, rubber or plastic foam, organic or inorganic fiber mat, or thick fabric. It is made of a composite cushioning material layered with one or more types of cushioning material sheets, and the lower layer is asphalt, iron powder, iron oxide powder, and steel slag (slag). Alternatively, it is composed of an asphalt root-like body obtained by adding and kneading two or more kinds of asphalt to form a plate-like body, and is characterized by having a structure in which the above-mentioned three layers, the surface layer, middle layer, and lower layer, are integrated.

The background to the development of the soundproof flooring material according to the present invention is as follows.

That is, the inventors found that on concrete slag or on A
As a result of test research on the relationship between impact sound insulation performance of various materials, materials, and prototypes under the conditions of L and C slags, the +11 surface layer is made of wood-based plywood as a base material to meet the wishes of residents. , The surface is decorated with decorative veneer, cork sheet, plastic sheet, etc., and the interior is one or two sound insulation sheets made of rubber, plastic, asphalt, and/or cork that have the effect of reducing and absorbing impact forces. A composite plywood made by laminating the above and plywood was selected.

The sound insulating sheet with the best sound insulating performance was a foamed rubber sheet containing iron oxide powder and filled with a large number of small cells and then vulcanized.

This composite plywood was able to significantly reduce the sound generated by the impact of objects.

(2) Next is the middle layer, which includes cushioning materials currently used in soundproof flooring, such as mats or long-pile thick fabrics (carpets) made of rubber, plastic foam, and fibers.
Although it has an excellent sound insulation effect on high and medium sounds with a frequency of 500 to 4000 Hz, it not only has no sound insulation effect on low sounds with a frequency of 63 to 250 Hz, but on the contrary, it does not have a sound insulation effect on low sounds with a frequency of 63 to 125 Hz. On the other hand, the sound pressure is 5 to 1
5 d 13 It was found that an increasing decrease was observed, and as a result of many experimental studies, the inventors of the present invention sought to improve the sound insulation performance for low-frequency sounds. After further research, they discovered that the sound insulation effect could be improved by using a cushioning material made of one or more types of wire mesh and rubber or plastic foam, organic or inorganic fiber mats, or thick materials in the middle layer. A composite cushioning material made by laminating one or more sheets was selected.

(3) Furthermore, an asphalt plate was selected as a lower layer for these surface and middle layers.

That is, as a result of experimental research, the present inventors found that iron powder, iron oxide powder, and steel slag (mining slag) were added to asphalt.
Knead the seeds or two or more, or mix some of these with sand,
The asphalt plate made by kneading the substituted crushed stone generates 4g of floor impact! I learned that there is a sound insulation function that reduces the sound in the low and middle range of 63 to 500 Hz by 5 to 10 dB overall.

As a soundproof flooring material, it has a structure and composition that combines the above three types of layers into one, so it has an extremely excellent overall sound insulation performance against floor impact sound. I learned that it can be done.

Next, an example of the structure of the soundproof flooring material of the present invention will be explained based on the drawings.

FIG. 1 shows a cross section of an example of a composite plywood used for the surface layer according to the present invention. l indicates the decorative m board used for surface decoration, 2,4
indicates plywood, and 3 indicates sound insulation sheets made of rubber, plastic, asphalt, and cork.

Figure 2 shows a cross section of an example of the composite cushioning material used in the middle layer according to the present invention, and 5.7 shows a mat or thick fabric cushioning sheet made of rubber or plastic foam or organic or inorganic fibers. , 6 indicates a wire mesh.

FIG. 3 shows an example of the structure of the soundproof flooring material of the present invention.

In the figure, A indicates the soundproof flooring material of the present invention, 8 indicates the composite plywood of its surface layer, 9 indicates the composite cushioning material of the middle layer, and 10 indicates iron powder, iron oxide powder, or steel slag in the asphalt of the lower layer. Alternatively, the =- part is replaced with sand or crushed stone and is mixed into an asphalt plate. +1 is concrete slag or AL on the -L floor of a high-rise apartment building.
Indicates C slug.

Next, each layer constituting the soundproof flooring material of the present invention will be explained in detail.

(1) The surface of the composite plywood used in the present invention is decorated with decorative QlI & (Tsuffi), cork sheets, and plastic sheets, and the interior is made of sound-insulating rubber sheets, plastic sheets, asphalt sheets, A desirable example of a cork sheet is one or more sound insulation sheets such as a foamed rubber sheet made by mixing rubber deluxe with iron oxide powder and then subjecting it to a post-washing process, and two or more sheets of plywood. Laminated composite plywood is exemplified, and it is said that the composite plywood has the ability to reduce the noise generated by impact force.

(2) A composite cushioning material made by laminating a combination of wire mesh and cushioning material was used for the middle layer.

The sound insulation effect of the wire mesh used for this purpose is attenuation of propagation in the vertical downward direction, and this is thought to be due to the following reasons. In other words, when the surface plate generates sound and vibration due to impact force, the wire mesh vibrates violently due to resonance or resonant action, and the vibration energy is widely spread and consumed in the horizontal direction, so the propagation in the vertical direction is attenuated. It is considered that

As for the types of wire mesh, tortoiseshell wire mesh or crimp wire mesh have excellent sound insulation effects, while woven wire mesh, rhombus wire mesh, and welded wire mesh are somewhat less effective (9 types of wire mesh are J, 1.5G-3551~
G-3555).

Furthermore, if the opening of the mesh of the wire mesh is too small or too large, the above effect will be reduced. 5-3
It has been found that a range of 0 m/ra is preferable.

It was also found that the thicker the wire used for the wire mesh is, 1.5 + s/+ s or more, the better the effect, while the thinner the wire, the less the effect. It turned out to be desirable.

Experimental measurements were conducted on perforated metal (iron plate with holes), which is similar to wire mesh, but no particularly significant sound insulation effect was observed.

Next, the cushioning material used for the middle layer is a cushioning material such as a rubber or plastic foam sheet, a mat-like material made of organic or inorganic (mainly glass) fibers, or a thick mat with long piles. A sheet-like material that has the effect of absorbing, mitigating, and attenuating applied impact force or floor vibrations is best; in the range of experimental measurements, foamed rubber provides the best sound insulation effect when the thickness is constant; The sheet and plastic foam sheet had a similar effect.

Next, the position of the wire mesh in the laminated structure of the combination of wire mesh and cushioning material is such that the effect decreases at the lowest layer position, and the wire mesh is inserted at the upper layer in contact with the back side of the composite plywood of the first surface layer or between two or more cushioning material sheets. It was found that the effect was greater in the position where

In addition, rather than forming a composite cushioning material by laying wire mesh and cushioning material separately on the floor surface of the construction site and laminating them, it is preferable to laminate the wire mesh and cushioning material in advance and integrate them by gluing or sewing to form a composite cushioning material. But transportation.

It is desirable because it is easy to handle and install.

It has also been found that a composite cushioning material made in advance of an integrated structure of wire mesh and foamed rubber or foamed plastic is also effective.

It has been found that a composite cushioning material with a multilayer structure consisting of two or more wire meshes of the same or different types and two or more cushioning sheets of the same or different types can provide even higher performance sound insulation effects.

The sound insulation properties of this composite cushioning material are as follows:
Not only the mid-high frequencies of 00 Hz but also 5 frequencies 63-250
Excellent sound insulation effects were obtained even for low frequencies of Hertz. What should be noted is that by selecting the S type and physical property shape of the wire mesh, it is possible to effectively suppress the sound with a center frequency of 125 Hz, an octave range, which is desired by soundproofing floor material researchers.
It was found that the sound could be reduced by ~18 dB (decibels).

(3) Asphalt with a high softening point is used as a raw material for the lower layer. S K-2207 blown asphalt,
or asphalt for waterproofing work, in some cases, adding synthetic rubber or synthetic resin, melt-mixing, or adding modifying agents,
li4 One or more types of straight asphalt modified to withstand thermal deformation or static load deformation are used as a mixture of three types of asphalt.

After heating and melting asphalt, asphalt 10
Mix 400 to 800 of one or more of iron powder, iron oxide powder, and steel slag to 11 parts of 0 weight F, or add a mixture of 400 to 800 slag iron powder, iron oxide powder, and steel slag, or replace some of them with sand or crushed stone, and knead. The paste or slurry obtained is cast or deposited on a flat plate to have a substantially uniform thickness, and then the desired thickness is obtained by roll pressure or flat plate pressure, which is then cooled.
By solidifying it, a heavy plate-like object with a specific gravity of 2.3 or more could be obtained.

In the present invention, it is preferable to use such a heavy asphalt plate having a specific gravity of 2.3 or more as the lower layer in order to achieve the object of the present invention.・For the convenience of the manufacturing process, storage, and construction handling, the plate-shaped body may be covered on one or both sides with a board material such as plywood, particle board, or cardboard, and then melted and bonded. .

'Mr!' of this asphalt plate! The i-characteristics have the effect of reducing the front pressure in general for bass frequencies of 63 to 250 hertz.

As explained separately about the three layers constituting the present invention, the sound insulation properties of these three layers exhibit a synergistic effect,
As a result, concrete slag or △[,
When a soundproof flooring material having the composition of the present invention is applied to a C. slag floor 1.1.1. 1. When the light floor percussion sound specified in SA-1418 is generated. J, 1. S Δ-14
-55 of the sound insulation class of the floor impact sound level specified in 19.
Or 1. -5' Passed 0 and achieved M sound performance of 1.

In the soundproof flooring material of the present invention, the building to be constructed is horizontally spread,
Due to the lack of concrete slag in the floor and the required Ma performance grade, the underlying asphalt plate is missing.
Composite plywood for the surface layer and composite cushioning material for the middle layer (lower layer)
There are cases where it is possible to satisfy the m-tonality class t@) required for a composition structure consisting of only layers.

[Example] Next, the present invention will be explained based on examples.

[Example-1] Three sheets of plywood with a thickness of 250/m and iron oxide powder with a thickness of 2.5/m were mixed, filled with a large number of small bubbles, and then treated. Insert the rubber sheet and the cork sheet with a thickness of 2.5+m/m between the plywood boards and stack them together in 5 layers.
A composite plywood was produced by decorative processing and used as the surface layer.

(2) Using wire bent into a corrugated shape with a diameter of 2.5 m/a+ of Lj tip wire of [-8', a crimp wire mesh woven with a mesh opening of approximately 2.5 m/+m is woven into a crimp wire mesh with a thickness of 81/1. Spread it on a foam rubber sheet,
In history, a punch carpet with a thickness of 41 I/ll was laid on top of a wire mesh to create a composite cushioning material with a three-layer laminated structure centered on the wire mesh, which served as the middle layer.

(3) Three types of asphalt for waterproofing work (J, 1.S) as asphalt.
K-2207, with the physical properties and properties listed in the three types in Table 4), and 300 parts by weight of iron oxide powder and 1 part by weight of iron oxide powder and a particle size of 0.3 to 4 particles/m to 100 parts by weight of this asphalt. A 300-heavy part of steel slag is mixed to form an aggregate with these mixing ratios, and while melting asphalt at 180 to 230°C, the aggregate is kneaded to form a paste, which is made into a paste with a thickness of 5.5 m/ Cast on +m plywood, thickness 15I171
1. Roll pressure is applied to form an asphalt plate-like object, and this is then covered with 3 m/1 thick plywood. Roll pressure is applied to weld the plywood and asphalt paste-like material, and then cooled. An asphalt plate was made and used as the lower layer.

(4) The above three-layer structure of the surface layer, middle layer, and lower layer is used as the composition of the soundproof flooring material, and the soundproofing material is laid on the concrete slag floor with a thickness of 15cm+ on the second floor and above of the second floor of the concrete building apartment complex. Activate the light warm sound impact drop generator specified in Jl, s A-1418 on the floor, and the floor impact generated by it! Put the L sound downstairs, J, 1. When measured according to the method specified in Section S, the measured values for each octave band center frequency are as shown in Table 1, and it passed the floor impact noise level rating 150 specified by J.1.5A-1419. I found out that I got it.

Table 1 [Example-2] (1) -Hehe No. 6 One sheet each of plywood of thickness 4-/l and 5.5Il/Im and thickness 2
17- A commercially available rubber sheet was laminated into a two-layer structure, and a four-layer composite plywood was made by pasting a 2-meter thick cork sheet on top of the 4-meter-thick plywood. This was used as the surface layer.

(2) A wire mesh with a wire diameter of 1.6 m/m is woven into a hexagonal shape of 19 to 22 m/m by partially twisting the wire to 1. Layer it on a felt sheet, layer it with a non-woven fabric with a thickness of about 1.5+s/m on top of this wire mesh,
A three-layer cushioning material was made, and this was used as the middle layer.

(3) As the asphalt plate of the lower layer, an asphalt plate made by the method described in Example-1 was used.

(4) The three-layer structure of the above surface layer, middle layer, and bottom layer is a soundproof floor.

As for the composition of the material, concrete t! The concrete slag floor with a thickness of 15 cm is laid on the second floor or above of a built-up apartment complex, and a light floor impingement sound is generated on this soundproof floor by the method described in Example-1, and this is heard downstairs. As a result of the measurement, the measured values are as shown in Table 2. J, T, S A-141
It was found that it could pass the floor impact sound level L-55 of the 9 regulations.

Table 2 [Example-3] +11'''``8-1''1 Composite plywood made by the manufacturing method described in Example-1 was used for the surface layer.

(The main ingredient is a mixed latex of 1.t styrene-butadiene synthetic rubber black 20 parts by weight and 30 parts of natural rubber latex, and a foaming agent (potassium oleate) and other additives are added to this. A foamed latex made by foaming a mixed latex containing the necessary flow agents (sulfur powder, various flow accelerators, additive gelling agents, etc.) by high-speed stirring is placed on a flat plate for about 10 minutes.
In this foamed latex, cast to a thickness of +s/a+,
Diameter of the wire mesh or wire used in Example-1: 2.5 m/w
The opening of the mesh is 25s/- using wire bent into a corrugated shape.
After washing the woven clip wire mesh, the foamed latex was heated to gel, molded, and then heated and washed away.A composite cushioning material was used as the middle layer.

(3) For the asphalt lower layer, an asphalt plate made by the manufacturing method described in Example-1 was used.

(4) Assuming the above three-layer structure of the surface layer, middle layer, and lower layer as the composition of the soundproof flooring material, the thickness of the second floor and above of a high-rise apartment complex + 5c + a
Installed on ALC slag floor.

A light moldy floor impact sound was generated on this soundproof floor by the method described in Example 1, and the sound was measured downstairs.The 111 constant value was as shown in Table 3, and was in compliance with J, 1.5A-1419 regulations. It was found that it could pass the floor impact sound level L-55.

Table 3 [Effects of the Invention] According to the present invention, a soundproof flooring material with high soundproofing effect could be provided.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the structure of the surface layer showing an embodiment of the present invention;
The figure is a cross-sectional view of the structure of a middle layer showing an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the structure of a soundproof flooring material showing an embodiment of the present invention. 1... Decorative veneer 2.4... Plywood 3... Sound insulation sheet 5.7... Foam sheet 6... Wire mesh A... Soundproof flooring material 8... Surface layer 9. ...Middle layer 10...Lower layer Patent applicant Oshika Shinko Co., Ltd. Representative patent attorney vi Yoshihiro Fuji Figure 1 Figure 2 Figure 3 Munono

Claims (1)

[Claims] 1. A flooring material to be laid/constructed on the floor, the surface layer of which has a decorative surface, and is made by bonding a sound insulating sheet made of rubber, plastic, asphalt and/or cork to plywood. The middle layer of the flooring is composed of one or more types of wire mesh and one or more types of rubber or plastic foam, organic or inorganic fiber mats, or thick fabric cushioning sheets.
The lower layer of the flooring material is an asphalt plate made by adding and kneading one or more of iron powder, iron oxide powder, and steel slag to asphalt. 1. A soundproof flooring material, characterized in that it has a structure that integrates three layers: a surface layer, a middle layer, and a bottom layer. 2. The soundproof flooring material according to claim 1, wherein part of the iron powder, iron oxide powder, and/or steel slag added to the asphalt is replaced with sand or crushed stone. 3. The soundproof flooring material according to claim 1, which is a composite cushioning material made into an integrated structure in which the wire mesh is contained inside the cushioning material. 4. A soundproof flooring material comprising a two-layer structure of the composite plywood according to claim 1 and the composite cushioning material according to claim 1.