JP3179746B2 - Piping soundproofing system and construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention, drainage pipes and water supply pipes, etc. water pipes, running water inside the pipe such as a gas pipe, drainage pipe soundproofing system can reduce the noise due to air flow, and
Concerning the construction method .

[0002]

2. Description of the Related Art As a conventional pipe sound insulation system, for example, a combination of a sound insulation sheet and a soft sound absorbing material as disclosed in Japanese Patent Application Laid-Open No. 4-1130 is disclosed, for example, in Japanese Patent Application Laid-Open No. 63-234.
No. 298, a sheet made by laminating an adhesive on a sound insulating sheet, for example, as disclosed in Japanese Patent Application Laid-Open No. 61-116196, is provided with a plurality of through holes in a water-curable inorganic material to obtain a soundproof effect. Are known.

[0003]

Generally, a pipe is installed in a narrow space, and therefore, the pipe is passed with a partly bent portion. In this case, the fluid flowing inside the pipe hits the inner wall of the pipe at the bent portion of the pipe, so that particularly large noise (hitting sound) is locally generated. However, the above prior arts are all soundproofing systems in which the entire pipe is covered with a soundproofing material, and no special consideration is given to a bent portion where noise is locally generated. Therefore, there is a problem that a satisfactory soundproofing effect cannot be obtained even when these conventional soundproofing systems are used for piping having a bent portion.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can be easily constructed outside a pipe having a bent portion, and has a soundproof effect. excellent piping soundproof system, your
And its construction method .

That is, according to the present invention, an adhesive sheet having an area density of 1.0 kg / m ² or more is adhered to the bent portion of the pipe having the bent portion, and the adhesive sheet is adhered to the pipe of the adhesive sheet.
The present invention provides a pipe soundproofing system characterized in that the opposite side has a non-adhesive layer and the entire pipe is covered with a sound absorbing material. In this way, by attaching an adhesive sheet having a large specific gravity to a bent portion of the pipe, in particular, where loud noise is generated locally, vibration of the pipe can be suppressed, and a sound insulation effect due to the large specific gravity can be obtained. Further, by covering the entire pipe with a sound absorbing material, an extremely high soundproofing effect can be obtained. Further, the pressure-sensitive adhesive sheet
Provide a non-adhesive layer on the side opposite to the side bonded to the pipe
Thereby, the workability of construction can be improved.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of a pipe soundproofing system according to the present invention will be described in detail. In the present invention, the pressure-sensitive adhesive sheet adhered to the bent portion of the pipe has an area density of 1.0.
kg / m ² or more, preferably 3.0 kg / m ^2.
kg / m ² or more, particularly preferably 5.0 to 30.0 kg
/ M ² . Area density of 1.0 kg /
If it is less than m ^{2, the} effect of suppressing vibration is not sufficient, and an effective soundproofing effect may not be obtained. Further, as the surface density increases, the weight increases, and if the surface density is too high, the workability of the construction is inferior. This material is not particularly limited as long as it has adhesiveness and the surface density is not less than a predetermined value, and examples thereof include butyl rubber, rubber as, acrylic, SBR, NR, and silicone. From the viewpoint of low-temperature adhesion and durability, a butyl rubber-based pressure-sensitive adhesive sheet is preferable. Also,
Although the thickness is not particularly limited, it is preferably about 1.0 to 20.0 mm from the viewpoint of construction workability and pipe space capacity.

In the present invention, in order to further improve workability, a non-adhesive layer is provided on the surface of the adhesive sheet opposite to the side adhered to the pipe .
You. The method of providing such a non-adhesive layer is not particularly limited, and examples thereof include laminating a flexible film or sheet of plastic or the like, surface treatment with a silicone resin, a fluororesin, or the like.

[0008] In the pipe soundproofing system of the present invention, the entire pipe is further covered with a sound-absorbing material. Such a sound-absorbing material is not particularly limited. For example, various plastic foams, rubber foams, non-woven fabrics, glass wool, etc. Blends of two or more of these, laminates and the like can be mentioned.
Although this thickness is not particularly limited, it is usually about 3 to 100 mm from the viewpoint of the soundproofing effect, and preferably about 3 to 30 mm in consideration of workability. May be. Further, the form of the sound absorbing material is not particularly limited, and a sheet-shaped or molded one that covers the outside of the pipe can be used.

In the present invention, a further soundproofing effect can be obtained by covering the outside of the sound absorbing material with a sound insulating material. The sound insulating material is not particularly limited, but the surface density is 0.6 to 15.0 kg / m ² , preferably 0.8 to 1 from the viewpoint of the sound insulating effect or the workability at the time of attaching to the pipe. Desirable is 10.0 kg / m ² ,
Specifically, a plastic sheet such as polyolefin (PO) or PVC, a rubber sheet such as EPT or butyl rubber, or a metal foil such as aluminum;
Examples include paper and cloth. Although the thickness is not particularly limited, it can be generally about 0.1 to 10 mm.
This sound insulating material may be laminated in advance on the sound absorbing material and coated on the pipe as a single piece or separately on the pipe.

[0010] The construction method of the soundproof piping system of the present invention is as follows.
On the bent part of the pipe, on the side opposite to the side that adheres to the pipe,
Adhesive sheet with an adhesive layer and an area density of 1.0 kg / m ² or more
And then cover the entire pipe from above.
It is a construction method of a pipe sound insulation system that covers sound absorbing material.
You. Since it has a non-adhesive layer on the back of the adhesive sheet,
Workability without sticking to adhesive sheet when coating sound material
Is improved.

[0011]

EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Example 1 As a pressure-sensitive adhesive sheet to be attached to a bent portion of a pipe, a butyl rubber-based pressure-sensitive adhesive sheet having an area density of 10.0 kg / m ² (1
0 mm thick) and urethane foam and E
A sheet shape (for a straight pipe portion) and a molded product (for a bent portion) (10 mm thick) made of a blend of a PT-based foam were used, and a PVC sheet (1 mm thick) was used as a sound insulating material.
Each of these soundproofing materials is connected to a pipe (drain pipe: VU10
0) to make a pipe soundproofing system. That is,
First, the bent portion 1 of the pipe is covered with the adhesive sheet 2,
Next, the entire pipe was covered with a sound absorbing material 3 in which a sound insulating material was previously laminated.

[0012] As Example 2 adhesive sheet using the surface density 5.0 kg / m ² of butyl rubber pressure-sensitive adhesive sheet (5mm thick), using polyester cotton (30 mm thick) as a sound absorbing material, PVC as sound insulation materials
Except for using a sheet (1 mm thick), the pipe was constructed in the same manner as in Example 1.

[0013] except using no adhesive sheet Comparative Example 1 bent portion, Example 1
The construction was performed in the same manner as described above.

[0014] except using no adhesive sheet Comparative Example 2 bent portion, Example 2
The construction was performed in the same manner as described above.

[0015] Comparative Example 3 soundproofing material was not subjected to anything.

With respect to the pipe soundproofing systems obtained in Examples and Comparative Examples, the noise level at the time of drainage was measured by the following method. 1) Each of the designated soundproofing materials is applied to the drain pipe constructed as shown in FIG. 1 (other than Comparative Example 3). 2) A microphone is placed at a height of 1.2 m, just below the center of the horizontal pulling section. 3) After the above preparations are completed, drain water from 2F (flow rate 360 liter / min). 4) Noise measurement is performed for 5 seconds from the start of drainage, and the maximum value during that period is used as the measured value. 5) The measurement results are shown in FIG. From the results of FIG. 2, it can be seen that the pipe soundproofing system of the present invention has a lower noise level and a higher soundproofing effect than that of the comparative example. Especially unpleasant 1
The effect is great in the frequency range above kHz.

[0017]

The pipe soundproofing system according to the present invention is characterized in that a sound-absorbing material and a sound-insulating material are attached in such a manner that a pressure-sensitive adhesive sheet having a large surface density is attached to a bent portion of a pipe where a loud noise is generated, and the entire pipe is covered from above. By performing the construction, a piping system having an extremely excellent soundproofing effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example of a pipe soundproofing system of the present invention.

FIG. 2 is a graph showing a sound pressure level (dBA) at each frequency of the pipe soundproofing system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bent part 2 Adhesive sheet 3 Sound absorbing material

Claims (5)

(57) [Claims] 1. A pressure-sensitive adhesive sheet having an area density of 1.0 kg / m ² or more is affixed to the bent portion of the pipe having the bent portion, and the opposite side of the pressure-sensitive adhesive sheet to the side bonded to the pipe.
A soundproofing system for pipes, characterized in that the surface has a non-adhesive layer and the entire pipe is covered with a sound absorbing material. 2. A soundproofing system for pipes, wherein a soundproofing material is further coated on the outside of the sound absorbing material according to claim 1. 3. A soundproofing system for pipes, wherein the pressure-sensitive adhesive sheet according to claim 1 is a butyl rubber-based pressure-sensitive adhesive. 4. The sound absorbing material according to claim 1, wherein the sound absorbing material is a sheet.
Shape or a shape that covers the outside of the piping.
And a pipe soundproofing system. 5. Adhering to a pipe at a bent portion of the pipe
Surface density 1.0kg / m with non-adhesive layer on opposite side ^Two
Cover the above adhesive sheet, then apply sound absorbing material to the entire pipe.
Construction method of sound insulation system for piping to cover.