JPH10159231A - Vibration control and sound insulation sheet, and vibration control and sound insulation material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control and sound insulation sheet and a vibration control and sound insulation material which do not take much time even when they are laid down to be executed on a floor substrate material and produces no floor sounding after the construction. SOLUTION: These vibration control and sound insulation sheet is laminated with a vibration control and sound insulation layer (A) 2 which is mainly composed of a high specific weight filler and synthetic resin and rubber or asphalt and a buffer layer (B) 3 which is made of a synthetic resin foam. In this case. The area ratio of a cell membrane portion in the whole area on the opposite side to the laminate side of the vibration control and sound insulation layer (A) 2 out of the buffer layer (B) 3, ranges from 0.5 to 10%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-damping and sound-insulating sheet and a vibration-damping and sound-insulating material using the same, and more particularly to a vibration-damping and sound-insulating sheet and a vibration-damping and sound-insulating material suitable for use on a floor of a house.

[0002]

2. Description of the Related Art The use of wooden flooring, multi-family homes and the like have been increasing in recent years, so that demands for preventing floor noise in apartment houses and single-family houses have been increasing. In recent years, in order to prevent floor noise, a vibration-damping and sound-insulating material or a sound-insulating material has been used between an underfloor on an upper floor and a ceiling on a lower floor.

As a vibration damping and sound insulating material for improving wooden floor impact noise, for example, JP-A-63-259595 discloses binders such as thermoplastic resin, rubber, asphalt, iron sand, slag, and the like. There is disclosed a vibration damping sound-insulating sheet in which an aggregate such as iron powder is mixed and processed into a sheet shape, and a nonwoven fabric is laminated as a buffer layer on the surface thereof.

[0004] Usually, an adhesive or a peg is used when constructing the above-mentioned vibration-damping and sound-insulating sheet. However, from the viewpoint of the reduction of the man-hour at the time of construction, the cost of the adhesive and the like, or the floor noise reduction effect. Recently, as a method of constructing a vibration damping and sound insulating sheet, a conventional method of laying down the floor without using an adhesive to fix the vibration damping and sound insulating sheet on a floor base material has been reviewed. However, in the conventional laying method, it may take a long time for the construction or cause floor noise after the construction.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a construction method which does not take much time even when laid on a flooring material.
Moreover, it is an object of the present invention to provide a vibration-damping and sound-insulating sheet without floor noise after construction and a vibration-damping and sound-insulating material using the same.

[0006]

The vibration-damping and sound-insulating sheet according to the first aspect of the present invention (hereinafter referred to as the first invention) comprises a high specific gravity filler and a synthetic resin, rubber or asphalt as a main component. And a buffer layer (B) made of a synthetic resin foam, wherein the vibration-damping and sound-insulating sheet (A) is made of a binder component and a buffer layer (B) is made of a synthetic resin foam. The area ratio of the bubble film portion in the entire area of the surface opposite to the surface on which the sound insulation layer (A) is laminated is 0.5 to 10
%.

The vibration-damping and sound-insulating sheet of the first invention comprises a vibration-damping and sound-insulating layer (A) and a buffer layer (B) laminated on each other, and the vibration-damping and sound-insulating layer (A) comprises a high specific gravity filler, And synthetic resin,
The buffer layer (B) is made of a synthetic resin foam made of a binder component containing rubber or asphalt as a main component.

The high specific gravity filler used in the vibration damping sound insulating layer (A) is preferably one having a specific gravity of 2 or more, more preferably one having a specific gravity of 4 or more. If the specific gravity is less than 2, sufficient vibration damping and sound insulating properties may not be obtained. Examples of such high specific gravity fillers include iron sand, 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 and the like.

The above-mentioned high specific gravity filler can be used in any form such as powder, fibrous, scale, etc., but powdery one is preferable because it can be easily mixed with resin or rubber components.
The particle diameter of the high specific gravity filler is preferably 2 mm or less,
More preferably, it is 5 to 500 μm. When the particle size of the high specific gravity filler exceeds 2 mm, uniform mixing becomes difficult, and the performance of the obtained vibration damping and sound insulating sheet tends to be uneven.

[0010] The compounding amount of the high specific gravity filler contained in the vibration damping sound insulating layer (A) is preferably 70 to 99.5% by weight, more preferably 80 to 99% by weight. When the ratio of the high specific gravity filler is less than 70% by weight, it is difficult to obtain a vibration damping and sound insulating sheet having excellent sound insulation of impact sound. On the other hand, when the ratio of the high specific gravity filler exceeds 99.5% by weight, synthetic Uniform mixing with a binder component containing resin, rubber or asphalt as a main component becomes difficult.

As the synthetic resin used as the binder component, a thermoplastic resin is preferable, and for example, a vinyl chloride resin, a polypropylene, a polyethylene, an acrylic resin and the like are suitably used.

Examples of the rubber used as the binder component include natural rubber, SBR (styrene butadiene rubber), NBR (nitrile butadiene rubber), CR (chloroprene rubber), BR (butadiene rubber), and IR (isoprene rubber). And vulcanized ones are preferred.

The above-mentioned synthetic resin or rubber is preferably emulsified because the vibration-damping and sound-insulating layer (A) can be easily formed. Examples thereof include acrylic resin emulsions, vinyl chloride ester copolymer emulsions, and SB emulsions.
R emulsion, NBR emulsion and the like are preferably used.

Examples of the asphalt include petroleum asphalts such as natural asphalt, straight asphalt, blown asphalt and cutback asphalt. These may be used alone or in combination of two or more.

The synthetic resin, rubber or asphalt used as the binder component may contain a plasticizer for adjusting viscosity; a processing aid such as a thickener and a gelling agent; and a pigment. When the above-mentioned emulsion is used as a binder component, it is preferable to mix and adjust a filler with the emulsion to form a slurry, since handling properties and molding efficiency are improved.

The amount of the binder component contained in the vibration-damping and sound-insulating layer (A) is preferably 0.5 to 30 parts by weight, more preferably 1 to 30 parts by weight, based on 100 parts by weight of the high specific gravity filler. 20 parts by weight. If the amount of the binder component is less than 0.5 part by weight, the high specific gravity filler is difficult to be sufficiently held by the binder component,
The obtained vibration-damping and sound-insulating sheet may have insufficient strength. Further, when the amount of the binder component exceeds 30 parts by weight, the obtained vibration damping and sound insulating sheet may have reduced vibration damping and sound insulating properties.

The method of producing the vibration-damping and sound-insulating layer (A) is not particularly limited as long as it can be formed into a sheet shape. Extrusion molding, calender molding, press molding, cast molding, etc., as well as coating and laminating. And spray coating.

As the synthetic resin foam used for the buffer layer (B), for example, any of closed-cell foam such as polyethylene foam and polystyrene; and open-cell foam such as flexible polyurethane foam can be used. . However,
When a closed-cell foam having a skin layer is used as the buffer layer (B), the foam is preferably sliced and arranged so that the slice surface is in contact with the floor base material,
It is not preferable to arrange the skin layer so as to be in contact with the floor base material.

The distinction between the above-mentioned open-cell foam and closed-cell foam is not clearly defined, but usually, ASTM
It is determined by measuring the closed cell rate according to the measurement method of D2856. That is, the closed cell ratio is a ratio of closed cells (perfect cells without pores) in the entire volume of the foam expressed as a percentage by volume. Those having a low closed-cell rate, that is, those having a high open-cell rate, are referred to as open-cell foams.

The expansion ratio of the synthetic resin foam is as follows:
10 to 50 times is preferred. If the foaming ratio is less than 10 times, the tackiness with the floor base material is reduced and slipperiness is caused. If the foaming ratio is more than 50 times, walking feeling may be reduced when a vibration damping and sound insulating sheet is constructed.

In general, a sheet-like foam is used for the buffer layer (B), and its thickness is preferably 0.5 to 5 mm. When the thickness is less than 0.5 mm, the tackiness with the floor base material is reduced and slipperiness is caused. When the thickness is more than 5 mm, walking sensation may be reduced when constructed under the floor finishing material.

In the case where the buffer layer (B) is disposed so as to be in contact with the floor substrate, the foam cell portion of the foam is in contact with the floor substrate, but the foam cell portion is in contact with the floor substrate. There is no. It is known that the size of the contact area of the foam film with the foam affects the workability and walking feeling.

In the vibration-damping and sound-insulating sheet of the first invention, the area of the bubble film portion in the total area of the surface of the buffer layer (B) opposite to the surface on which the vibration-damping and sound-insulating layer (A) is laminated is provided. The rate is limited to 0.5-10%. When the area ratio of the bubble film portion is less than 0.5%, the walking sensation of the obtained vibration damping and sound insulating material is reduced, and floor noise tends to occur. When it exceeds 10%, the tack between the vibration damping sound insulating sheet and the floor base material is tacked. Since the workability is reduced, the workability is reduced due to slipperiness.

The thickness of the vibration-damping and sound-insulating sheet of the first invention is preferably from 1 to 30 mm because the vibration-damping and sound-insulating performance becomes insufficient and the manufacture becomes difficult when the sheet is thin, and the workability is deteriorated when the sheet is thick. Preferably, more preferably 2 to 2
0 mm.

In order to improve the handling strength of the vibration-damping and sound-insulating sheet, a synthetic fiber nonwoven fabric may be laminated as a surface material on the vibration-damping and sound-insulating layer (A) side. As synthetic fibers, for example, nylon, polyester, polyethylene,
Fibers such as polypropylene are exemplified. As a method for producing the nonwoven fabric, any method such as a spun bond method, a melt flow method, a flash yarn prevention method, a tow opening method, and a burst fiber method may be used.

The basis weight of the synthetic fiber nonwoven fabric is 10 to 150
g / m ² , more preferably 20 to 50 g / m ^2
2 If the basis weight is less than 10 g / m ² , problems tend to occur in the accuracy of the non-woven fabric. If the basis weight exceeds 150 g / m ² , the adhesive permeates the non-woven fabric when the adhesive is applied to integrate with the floor, and the bonding work is performed. It may be difficult.

The invention according to claim 2 of the present invention (hereinafter referred to as “second
The vibration-damping and sound-insulating material according to the first aspect of the present invention comprises a plywood, a particle board, an OSB board,
It is obtained by laminating between a floor base material such as an MFD board and a floor finishing material such as a flooring material.

In the above vibration damping and sound insulating material, the vibration damping and sound insulating sheet is laid and laid so that the contact area ratio between the buffer layer (B) and the floor base material is 0.5 to 10% of the floor base material surface area. Further, a floor finishing material is laminated on the vibration damping and sound insulating sheet with an adhesive. The floor covering material, the vibration damping sheet and the floor finishing material are fixed to each other by nails such as finish nails from the floor finishing material side.

[0029]

The vibration-damping and sound-insulating sheet of the first invention has a vibration-damping and sound-insulating layer (A) comprising a high specific gravity filler and a binder component containing a synthetic resin, rubber or asphalt as a main component, and a buffer layer (a foam). By being formed from the laminate of (B), the surface density of the vibration-damping and sound-insulating layer (A) is large, and the sound-absorbing effect of the buffer layer (B) is excellent.

In the vibration damping and sound insulating material of the second invention, the contact area ratio between the buffer layer (B) of the vibration damping and sound insulating sheet of the first invention and the floor base material is 0.5 to 10% of the floor base material area. By doing so, the tackiness with the floor base material is good and it is not slippery, so that positioning when laying on the floor base material can be easily performed, and the construction time can be shortened.

A vibration-damping and sound-insulating material according to a second aspect of the present invention comprises:
By being formed from the laminate of the vibration damping sound insulating sheet and the floor finishing material of the present invention, the floor noise is less likely to occur because the vibration damping sound insulating sheet does not easily slide on the floor base material even after construction.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the following examples.

Example 1 1000 parts by weight of iron sand (specific gravity: 4.6, particle size: 200 mesh pass) as a high specific gravity filler, and non-vulcanized carboxy-modified SBR as a binder component
Emulsion (JSR-061 manufactured by Nippon Synthetic Rubber Co., Ltd.
9 ", solid content 48% by weight, specific gravity: 1.0) 30 parts by weight,
2 parts by weight of methylcellulose ("Metroze 90SH30000" manufactured by Shin-Etsu Chemical Co., Ltd.) as a thickener and 150 parts by weight of water were mixed to prepare a slurry for a vibration damping and sound insulating layer. Next, the slurry was applied to a polyester nonwoven fabric (basis weight: 50 g / m ² ) as a surface material so as to have a thickness of 4 mm, and a polyurethane open cell foam (thickness: 1.5 mm) as a buffer layer was formed thereon. , Foaming ratio 40 times)
By heating at 80 ° C. for 3 hours to evaporate the water, as shown in FIG. 1, the surface material 1 is laminated on one surface of the vibration damping and sound insulating layer 2 and the buffer layer 3 is laminated on the other surface of the vibration damping and sound insulating layer 2 The obtained vibration damping and sound insulating sheet was obtained. Table 1 shows the thickness and weight of this vibration damping and sound insulating sheet.
It was shown to.

Example 2 1000 parts by weight of iron sand (specific gravity: 4.6, particle size: 200 mesh pass) as a high specific gravity filler, and non-vulcanized carboxy-modified SBR as a binder component
Emulsion (JSR-061 manufactured by Nippon Synthetic Rubber Co., Ltd.
9 ", solid content 48% by weight, specific gravity: 1.0) 35 parts by weight,
2 parts by weight of methylcellulose ("Metroze 90SH30000" manufactured by Shin-Etsu Chemical Co., Ltd.) as a thickener and 150 parts by weight of water were mixed to prepare a slurry for a vibration damping and sound insulating layer. Next, the slurry was applied on a polyester nonwoven fabric (basis weight: 50 g / m ² ) as a surface material so as to have a thickness of 4 mm, and a polyurethane open cell foam (thickness 2 mm, foam (30 times magnification)
The mixture was heated at a temperature of 3 ° C. for 3 hours to evaporate water, thereby obtaining a vibration-damping and sound-insulating sheet having the thickness and weight shown in Table 1.

Example 3 1000 parts by weight of iron sand (specific gravity: 4.6, particle size: 200 mesh pass) as a high specific gravity filler, and non-vulcanized carboxy-modified SBR as a binder component
Emulsion (JSR-061 manufactured by Nippon Synthetic Rubber Co., Ltd.
9 ", solid content 48% by weight, specific gravity: 1.0) 200 parts by weight, methyl cellulose (Shin-Etsu Chemical Co., Ltd." Metroze 90SH30000 ") 2 parts by weight and water 150
The composition consisting of parts by weight was supplied to an extruder to prepare a vibration damping sound insulating layer. Next, a polyester nonwoven fabric (weight per unit area: 50 g / m ² ) as a surface material is laminated on one surface of the vibration damping sound insulating layer using a rubber-based adhesive, and a buffer layer is formed on the other surface of the vibration damping sound insulating layer. Laminated using a rubber-based adhesive so that the sliced surface of the sliced polyethylene closed-cell foam (thickness: 2 mm, expansion ratio: 30) is on the floor base material side described later, A heavy vibration damping and sound insulating sheet was obtained.

(Comparative Example 1) Polyester nonwoven fabric (basis weight:
Except for using 50 g / m ² ), a vibration-damping and sound-insulating sheet having the thickness and weight shown in Table 1 was obtained in the same manner as in Example 1.

Comparative Example 2 The control of the thickness and weight shown in Table 1 was carried out in the same manner as in Example 2 except that a polyurethane open-cell foam (thickness: 2 mm, expansion ratio: 70 times) was used as the buffer layer. A vibration-insulating sheet was obtained.

(Comparative Example 3) After preparing a vibration-damping and sound-insulating layer in the same manner as in Example 3, a polyester nonwoven fabric (basis weight: 50 g / m ² ) as a surface material was rubber-based on one surface of the vibration-damping and sound-insulating layer. The sliced surface of the sliced polyethylene closed-cell foam (thickness: 2 mm, foaming ratio: 30 times) laminated with an adhesive and used as a buffer layer on the other surface of the vibration-damping sound-insulating layer is in contact with the vibration-damping sound-insulating layer. Were laminated using an adhesive to obtain a vibration-damping and sound-insulating sheet having the thickness and weight shown in Table 1.

[0039]

[Table 1]

Construction of the vibration-damping and sound-insulating material The sound- damping and sound-insulating sheets obtained in the above Examples and Comparative Examples were applied to the second floor of a unit-type 2-by-4 house ("2U Home" manufactured by Sekisui Chemical, 6 tatami mats). The construction was performed as shown in FIG. That is, the vibration-damping and sound-insulating sheet 21 is laid on a particle board having a thickness of 20 mm, which is the floor base material 23, so that the cushioning layer is in contact with the contact area ratio shown in Table 1, and the floor is placed thereon. A 6 mm thick flooring material, which is a finishing material 22, is bonded using a vinyl acetate paste-based adhesive (trade name “Esdine floor tile” manufactured by Sekisui Chemical Co., Ltd.). A 40-mm finish nail was nailed at intervals of 150 mm and integrated, and a three-layer vibration-damping and sound-insulating material was fixed on the floor joist 24. Further, a sound absorbing material 25 is arranged between the floor joists 24.

The time required to obtain a vibration-damping and sound-insulating material from the vibration-damping and sound-insulating sheet was measured. The results are shown in Table 1.
Furthermore, the presence or absence of occurrence of floor noise was judged by hearing when a person actually walked on the vibration damping material installed on the second floor, and the results are shown in Table 2.

[0042]

[Table 2]

[0043]

The vibration-damping and sound-insulating sheet of the first invention is as described above, and comprises a vibration-damping and sound-insulating layer comprising a high specific gravity filler and a binder component containing synthetic resin, rubber or asphalt as a main component. By laminating the buffer layer made of the resin foam, the surface density is large, and the buffer layer has a sound absorbing effect, so that it has excellent vibration damping and sound insulating properties. Furthermore, when the above-mentioned vibration damping sound insulation sheet is constructed, by contacting the buffer layer with the floor base material, the tackiness with the floor is good and it is hard to slide, so that the positioning can be easily performed and the construction time can be greatly reduced. .

In the vibration damping and sound insulating material of the second invention, a floor base material is laminated on the buffer layer side of the vibration damping and sound insulating sheet of the first invention, and a chemical finishing material is laminated on the vibration damping and sound insulating layer side. Therefore, the vibration-damping and sound-insulating sheet becomes difficult to move, and floor noise does not occur.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a vibration damping and sound insulating sheet of the present invention.

FIG. 2 is a partially cutaway perspective view showing a vibration damping sound insulating material.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 surface material 2 vibration-damping and sound-insulating layer 3 buffer layer 21 vibration-damping and sound-insulating sheet 22 floor finishing material 23 floor base material 24 floor joist 25 sound absorbing material

Claims (2)

[Claims] 1. A vibration-damping sound-insulating layer (A) composed of a high-specific-gravity filler and a binder component mainly composed of synthetic resin, rubber or asphalt, and a buffer layer (B) composed of a synthetic resin foam. In the vibration damping and sound insulating sheet, the area ratio of the bubble film portion in the entire area of the surface of the buffer layer (B) opposite to the surface on which the vibration damping and sound insulating layer (A) is laminated is 0. 0.5 to 10%. 2. A floor finishing material is laminated on the sound insulating layer (A) side of the vibration damping and sound insulating sheet according to claim 1, and a floor base material is laminated on the buffer layer (B) side of the vibration damping and sound insulating sheet. And a contact area ratio between the buffer layer (B) and the floor base material is 0.5 to 10% of the floor base material surface area.