WO2000060272A1

WO2000060272A1 - Sound insulating member

Info

Publication number: WO2000060272A1
Application number: PCT/JP1999/001778
Authority: WO
Inventors: Yasuyuki Ohira; Mitsuo Hori
Original assignee: Shishiai-Kabushikigaisha
Priority date: 1999-04-02
Filing date: 1999-04-02
Publication date: 2000-10-12

Abstract

A sound insulating member applied to piping in a plumbing system and an air conditioning system in a building, comprising a sound isolating layer with a surface density of 5.0 to 25.0 kg/m2 and a sound absorbing layer with a thickness of 5.0 to 10.0 mm, thereby providing an ease-of-handling and an excellent sound insulating performance.

Description

Itoda »Soundproofing member Technical field The present invention relates to a soundproofing member applied to piping such as a water supply / drainage device or an air conditioner of a building. More specifically, the present invention relates to a soundproof member which is applied to a pipe having a joint and a straight pipe curved substantially in an L shape and has excellent handleability and excellent soundproof performance. In recent years, with the demand for more comfortable indoor environments and living spaces, there has been a great deal of attention to noise control. Development is underway. In order to meet such demands, there has been proposed a soundproofing member in which a sound insulating layer made of an asphalt sheet is laminated with a sound absorbing layer made of an air cushion sheet, glass wool, felt or the like. However, in order to obtain a sufficient soundproofing effect in the above-described soundproofing member, a method of increasing the sound insulation density or increasing the thickness of the sound absorbing layer has been adopted. However, if the method of increasing the thickness of the sound absorbing layer is adopted, a thickness of 10.0 to 20 mm is required to obtain a sufficient soundproofing effect, and the sound absorbing layer itself becomes bulky. Becomes harder. As a result, when the soundproofing member is installed around the pipe, there is a possibility that the pipe cannot be installed in the space of the construction site. This is especially true around pipes. This is a problem in straight pipe sections where space is limited. On the other hand, in the case of a curved portion, the sound absorbing layer becomes hard, and it is difficult to attach the sound absorbing layer to a curved surface. In addition, the noise generated from the distribution pipes is not uniform and varies depending on the location. In particular, curved joints where fluids collide are areas where noise is generated. Therefore, it is necessary to enhance the soundproofing especially in such a curved portion. The present invention has been made in view of such circumstances, and is a soundproof member excellent in handleability, particularly in handleability for piping having a curved portion, and excellent in a curved pipe portion that generates large noise. It is an object of the present invention to provide a soundproof member having soundproof performance. DISCLOSURE OF THE INVENTION In order to achieve the above object, according to the present invention, a soundproofing member applied to a pipe having a curved joint portion and a straight pipe portion such as a water supply / drainage device for a building or an air conditioner has a surface density of from 5.0 to 2 5. 0 sound insulation layer and the thickness of kg / m ² 5. 0-1 0. soundproof member; and a sound absorbing layer of O mm and its gist. For the soundproofing member having such a main configuration, a combination of the sound insulation layer, the vibration suppression layer, the vibration suppression layer, and the sound absorption layer, a combination of the sound insulation layer, the vibration suppression layer, and the sound absorption layer, the sound insulation layer, the vibration suppression layer, and the sound absorption layer A combination of layers or a combination of a sound insulation layer and a sound absorption layer can be adopted. Incidentally, as the sound absorbing layer, a layer made of a urethane chip product of a recycled material can be suitably used. The soundproofing member may have a form in which the outer surface is covered with a heat-shrinkable film such as polyvinyl chloride, polyethylene, polyester, polypropylene, and polystyrene. Further, in this soundproofing member, both ends of the pipe can be left attached to the circumference of the pipe so as to be slidable. Further, the sound insulation layer or the Z and sound absorption layers of the sound insulation member applied to the curved joint portion and the sound insulation member applied to the straight pipe portion can be formed to have different configurations. Since the soundproofing member of the present invention has a sound insulating layer having an areal density of 5.0 to 25.0 kg / m ^{2 and} a sound absorbing layer having a thickness of 5.0 to 100.0 mm, it is curved. It has excellent handling properties, such as installation on a pipe that has been installed, and has excellent soundproofing performance. Further, in the soundproofing member of the present invention, since the soundproofing member is fastened to the pipe by heat shrinkage of the heat shrinkable film provided on the outer surface, the adhesive or the adhesive is used. It is not necessary, and can be easily and securely mounted by heating, and processing is easy. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged sectional view of a main part showing a soundproof member of the present invention.

FIG. 2 is a perspective view showing the soundproof member of the present invention.

FIG. 3 is a perspective view showing a state in which the soundproof member of the present invention is applied to a pipe.

FIG. 4 is an enlarged sectional view of a main part showing another example of the soundproofing member of the present invention.

FIG. 5 is a perspective view showing a state in which the soundproof member of the present invention is piped. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a soundproof member of the present invention will be described in detail according to an embodiment shown in the drawings. The soundproofing member of the present invention has a substantially L-shaped curved portion such as a building water supply / drainage device or an air conditioner. The pipes are straight pipes and joints conventionally used, and the shape, thickness, length, etc. are arbitrary. As shown in FIGS. 1 and 2, the soundproofing member 11 of the present invention has a soundproof layer 13 and a sound absorbing layer 15. The material of the sound insulation layer 13 is not limited as long as the area density is 5.0 to 25.0 kg / m ² . Preferably, a resin obtained by random or block copolymerization with at least one of monomers which can be copolymerized with a vinyl chloride monomer, in addition to a resin polymerized with asphalt or a salt alone, is preferred. Graft copolymerization with vinyl copolymer resin, for example, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl chloride copolymer, vinylidene chloride monobutyl chloride copolymer, or resin that can be graft copolymerized with vinyl chloride monomer Examples thereof include vinyl chloride graft copolymer resins, for example, vinyl chloride resins such as ethylene-vinyl acetate-vinyl chloride daraft copolymer and polyurethane-vinyl monochloride graft copolymer. If the surface density of the sound insulating layer 13 is less than 5.0 kg Zm ² , sufficient sound insulating ability cannot be obtained particularly in a curved pipe portion where noise is generated, and the surface density is 25.0. If greater than kg / m ^2, the sound insulating layer 1 3 to Ri attached to preparative the pipe portion weight is curved heavier itself is very poor workability, such as stripping the soundproof member after attaching the pipe occurs Failure may occur. The sound insulation layer 13 is filled with fillers such as calcium carbonate, talc, magnesium oxide, alumina, titanium oxide, barite, iron oxide, zinc oxide, and graphite to improve sound insulation. be able to. The filler is preferably filled with a filling amount of 50 to 95% by weight so that the mechanical strength of the sound insulating layer 13 does not decrease while securing sufficient sound insulating properties. In addition, it goes without saying that the filling of the filler can also adjust the viscosity of the sound insulating layer 13 and reduce the mixing cost in addition to the improvement of the sound insulating property. On the other hand, the sound-absorbing layer 15 is made of urethane, chloroprene, styrene-butadiene copolymer, Resin such as polyethylene, polypropylene, ethylene acetate butyl, and styrene is used alone or in combination, and has a thickness of 5.0 to 10.0 mm. If the thickness of the sound absorbing layer 15 is less than 5.0 mm, a sufficient sound absorbing effect cannot be obtained. If the thickness is more than 10 mm, the sound absorbing layer 15 becomes bulky and hard. When 11 is mounted on the circumference of the pipe 10, if the pipe 10 cannot be installed in the space of the construction site or cannot be installed on the curved pipe, a situation may occur. The sound absorbing layer 15 preferably has an open-cell structure in order to ensure better sound absorbing properties. The expansion ratio when the sound absorbing layer 15 has a foamed structure is arbitrary, but is preferably from 10 to 50 times from the viewpoint of ensuring good sound absorbing properties. The sound absorbing layer 15 may be perforated, slitted, or the like to further enhance the sound absorbing properties. The soundproofing member 11 of the present invention includes a sound-insulating layer 13 and a sound-absorbing layer 15, as well as a damping layer 14 and a vibration-proofing layer. Anything can be added and used freely. Specific examples include a sound insulation layer, a vibration suppression layer, a vibration suppression layer, and a sound absorption layer, a sound insulation layer, a vibration suppression layer, and a sound absorption layer, and a sound insulation layer, a vibration suppression layer, and a sound absorption layer. It can take the form. In addition, by appropriately determining and using the type of each layer, the stacking order, the thickness of each layer, the number of layers, and the like according to the use and use state of the soundproof member, a soundproof member optimal for the use and use state can be produced. Can be. Examples of the vibration damping layer 14 include a material obtained by compounding rubber with the vinyl chloride resin. In this case, the rubber includes acrylonitrile-tagen rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), isoprene rubber (IR) and the like. Rubber distribution In order to obtain good viscoelastic properties at room temperature, the amount is preferably 10 to 80% by weight. If the amount is more or less than this range, sufficient viscoelastic properties at room temperature cannot be obtained. This damping layer 14 can be filled with the same filler as the sound insulating layer 13 to improve the damping property. As the filler, the same filler as exemplified in the place of the sound insulating layer 13 can be used. The vibration damping layer is mainly made of rubber-based materials such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber (NR), and isoprene rubber (IR). It is possible to use those obtained by blending a resin with these rubber-based materials. If necessary (for adjusting the hardness), the vibration isolating layer may be filled with a filler such as carbon black or calcium carbonate. When a sound damping layer is used as the sound insulating member 11 in addition to the sound insulating layer and the sound absorbing layer, the sound insulating layer and the sound damping layer may be replaced with those having different layers. It is also possible to use a single layer of sound insulation and vibration damping layer having these properties. In this case, as the sound insulation damping layer, for example, a resin matrix made of a vinyl chloride resin and filled with a piece of Myricin as shown in JP-A-8-73648, For example, a resin matrix made of a chlorinated butyl resin and filled with mylar pieces and calcium carbonate can be used. The soundproofing member 11 of the present invention has a soundproofing layer, a sound absorbing layer, and, if necessary, a vibration damping layer and a vibration damping layer, so that an excellent soundproofing effect can be derived. For example, the soundproof member 11 shown in FIG. 1 has a sound insulating layer 13, a sound absorbing layer 15 and a vibration damping layer 14, and the sound insulating layer 13, the vibration damping layer 14 and the sound absorbing layer 15 are The sound-absorbing member 11 was attached to the outer periphery of the pipe 10 so that the sound-absorbing layer 15 of the sound-insulating member 11 was located on the side of the pipe 10 through the adhesive layer 16, and was generated from the pipe 10. Water supply and drainage noise is absorbed by the sound absorbing layer 15 Therefore, the noise caused by the noise from the sound absorbing layer 15 is attenuated by the vibration damping layer 14, and the noise is reduced by the sound insulating layer 13. The soundproofing member 11 of the present invention may be attached to the peripheral surface of the pipe 10 by interposing an adhesive or a pressure-sensitive adhesive, or may be wound around the peripheral surface of the pipe and fastened with a tape or a belt from above. The installation can be done in two ways: one is to install it at the site, and the other is to install it around pipes in advance so that the installation work at the site can be omitted. As a form that can be omitted, for example, there is a type in which a soundproofing member corresponding to the shape and size of the straight pipe or L pipe to be used is attached in advance around the pipe with an adhesive or adhesive. There is something. The soundproofing member 11 shown in Fig. 1 is also of the type that is previously attached to the piping 10 circumference, and the outer surface is made of a heat-shrinkable film 12 of polyvinyl chloride, polyethylene, polyester, polypropylene, polystyrene, etc. It is what covered. In the case of the soundproofing member 11 whose outer surface is covered with the heat-shrinkable film 12, the soundproofing member 11 is fitted into the pipe 10 without using an adhesive or an adhesive, and is heated to heat the film 1 2 on the outer surface. Can be thermally contracted, and the soundproof member 11 can be tightened and attached to the pipe 10. Further, like the soundproofing member shown in FIG. 3, the both ends of the pipe 10 may be left so as to be slidably attached to the peripheral surface of the pipe 10. Fig. 3 shows the case where the soundproofing member 11 is applied to the pipe 10 (straight pipe). The soundproofing member 11 is attached, leaving both ends fitted into the L pipe, and this can be slid. Things. In other words, the soundproofing member 11 in FIG. 3 has the outer surface covered with the heat-shrinkable film 12 described above, and the soundproofing member 11 is fitted to the pipe 10 without using an adhesive or an adhesive. Then, this is heated to thermally shrink the film 12 on the outer surface, so that the soundproof member 11 is fastened and attached to the pipe 10. This is soundproof The member 11 can be slid around the pipe 10. For this reason, if the soundproof part Neo 11 is attached to the pipe 10 in advance, if it becomes necessary to cut the pipe 10 to an appropriate length at the site according to the situation of the factory, the soundproof member 1 It is sufficient to slide the pipe 1 to one side of the pipe 10 and cut only the other end of the pipe 10, so that the length of the pipe 10 can be adjusted more efficiently. Further, the soundproofing member 11 of the present invention can be formed such that the thickness of the sound insulating layer and the thickness of the sound absorbing layer are different between the joint portion 10a having a curved shape and the straight pipe portion 1Ob. In other words, the thickness of the sound absorbing material or the sound insulating material can be increased in a curved portion where noise is particularly large, and can be reduced in the straight pipe portion 10b. Further, only the surface density of the sound insulation layer may be changed. This makes it possible to effectively prevent noise in a portion where noise is generated, and to install the straight pipe portion 10b and a portion where noise is low with only the minimum soundproof member 11. This is effective when the straight pipe section 10b cannot be made thicker due to the limited space at the construction site, and the pipe 10 has the entire straight pipe section 10b. Since the straight pipe section 10b requires a large amount of soundproofing members 11 to improve the soundproofing effect, a similar effect can be obtained by using a small amount of soundproofing members 11 in the curved section. The effect can be obtained. Example An asphalt sheet (density 3.4) as a sound insulating material and a molded chip product (density 0.05) (crushed from urethane as a sound absorbing material) (density 0.05) (manufactured by INNOAT CORPORATION) were laminated and integrated. Thus, a soundproofing member (having the form shown in Fig. 4) was manufactured. Attach this soundproofing member 11 around the joint having the straight pipe portion 10a and the curved portion 10b of the pipe 10 and laminate the polyester film 12 on the outer surface of the asphalt sheet and heat it. Then, the polyester film 12 was shrunk, and the soundproof member 11 was attached to the pipe. Then, each of the sump-noles in which the soundproofing member i1 made of a sound absorbing material or a sound insulating material having various thicknesses is applied to the straight pipe portion 10a and the joint portion 1Ob is piped as shown in FIG. The drainage noise from the drain is picked up by a noise meter (LA-210, manufactured by Ono Sokki Co., Ltd.) placed 10 m away from the pipes (drainage pipe), the noise level is measured, and the FFT analyzer (CF — 350, manufactured by Ono Sokki Co., Ltd.). The results are shown in Table 1. ① indicates the thickness of the sound absorbing material ( _mm ), and ② indicates the thickness of the sound insulating material ( _mm ).

From Table 1, for example, when trying to obtain 54 dB or less using a sound absorbing material of 5 mm and a sound insulating material of 1.5 mm, 90% of the sound absorbing material of 6 mm and sound insulating material 2. It is necessary to attach the entire straight pipe close to it, but if it is done at the joint part, the whole

It was confirmed that 10% could achieve 53.2 dB, 1 Omm, and 53.8 dB with 1 Omm and 1.5 mm, respectively.

Claims

Scope of word blue

1. A soundproofing member applied to piping having curved joints and straight pipes, such as plumbing equipment and air conditioners for buildings, with a surface density of 5.0 to 25.0 kg / m. ^2. A soundproof member comprising: the sound insulating layer of No. ^{2; and} a sound absorbing layer having a thickness of 5.0 to 10.0 mm.

2. The sound insulation member is a combination of a sound insulation layer, a vibration suppression layer, a vibration insulation layer, and a sound absorption layer, a combination of a sound insulation layer, a vibration suppression layer, and a sound absorption layer, a combination of a sound insulation layer, a vibration insulation layer, and a sound absorption layer. 2. The soundproofing member according to claim 1, wherein the soundproofing member comprises a combination of a sound insulation layer and a sound absorption layer.

3. The soundproofing member according to claim 1 or 2, wherein the sound absorbing layer is made of a urethane chip product of a recycled material.

4. The soundproofing according to any one of claims 1 to 3, wherein the outer surface of the soundproofing member is covered with a heat-shrinkable film such as polyvinyl chloride, polyethylene, polyester, polypropylene, and polystyrene. Element.

5. The soundproofing member according to any one of claims 1 to 4, wherein both ends of the pipe are left slidably attached to a peripheral surface of the pipe.

6. The sound-insulating layer or the sound-absorbing layer or the sound-absorbing layer of the soundproofing member applied to the curved joint portion and the soundproofing member applied to the straight pipe portion have different configurations. The soundproofing member according to any one of the above.