JP2007270976A - Sound proofing/shielding material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound proofing/shielding material easier to bend. <P>SOLUTION: Sound proofing fiber bodies 1 of low specific gravity and sound shielding fiber bodies 2 of high specific gravity 2 are laminated. Both laminated fiber bodies 1, 2 are joined to each other with a number of flexible fibers 3a which are dispersed in their mating face direction X. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a soundproofing / soundproofing material in which a soundproof fiber body having a low specific gravity and a soundproof fiber body having a high specific gravity are stacked.

In recent years, in sewage piping in buildings and condominiums, etc., there is a tendency that the sound drained from the piping is recognized as noise, and as a countermeasure, the soundproofing material is coated on the piping or the soundproofing material in advance. Or pipes coated with
As an example, there is a pipe in which a soundproofing / soundproofing material including a soundproofing material made of a soundproofing material having a low specific gravity and a soundproofing material made of a sound insulating material having a high specific gravity is coated on a pipe (for example, a patent document) 1).

JP-A-10-96496 (2nd page, FIG. 1)

However, in the soundproofing / soundproofing material that covers this type of pipe, the soundproofing body and the soundproofing body are joined with an organic adhesive, and therefore there is a tendency for the material to be difficult to bend when the adhesive is solidified. .
Therefore, there is a problem that it is difficult to wind the pipe in a cylindrical shape.
Further, when manufacturing a pipe product in which a soundproofing / sound insulation material is wound around a pipe part in a cylindrical shape, there is a similar problem and there is a problem of poor manufacturability.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a soundproofing / soundproofing material with improved bendability.

  The characteristic configuration of the first soundproofing / soundproofing material of the present invention is that a soundproofing fiber body having a low specific gravity and a soundproofing fiber body having a high specific gravity are stacked, and both the stacked fiber bodies are dispersed in the direction of the mating surface. They are connected by a large number of flexible fibers.

  According to such a configuration, in a state where the soundproofing / soundproofing material is bent, the fibers that join the two fibrous bodies are allowed at the overlapping portion with respect to the relative movement that occurs at the mating surface between the soundproofing fiber body and the soundproofing fiber body. Since it follows flexibly and deforms, it can respond to bending while the mating surfaces of both fiber bodies are in a coupled state.

  Therefore, it is possible to form a soundproofing / soundproofing material that is easy to bend compared to a conventional soundproofing / soundproofing material that is difficult to bend because the soundproofing body and the sound insulating body are joined by an adhesive body. Can be improved.

  The characteristic configuration of the second soundproofing / soundproofing material of the present invention is a soundproofing / soundproofing material that can be wound around a pipe in a tubular shape, and a low specific gravity soundproofing fiber body and a high specific gravity soundproofing fiber body are stacked, The stacked fiber bodies are connected by a large number of flexible fibers dispersed in the mating plane direction.

  According to such a configuration, in the state where the soundproofing / soundproofing material is wound around the pipe in a cylindrical shape, the fibers that bind the two fibrous bodies to the relative movement that occurs on the mating surface of the soundproofing fiber body and the soundproofing fiber body are Since it flexibly deforms and follows at the overlapping portion, the mating surfaces of the two fiber bodies can cope with the bending while being in a combined state.

Therefore, it is possible to form a soundproofing / soundproofing material that is easy to bend compared to a conventional soundproofing / soundproofing material that is difficult to bend by bonding with an adhesive body. It is possible to improve the workability in
For this reason, when winding soundproofing / soundproofing material around existing piping or new piping in a cylindrical shape, it is possible to improve the efficiency of the winding work, and when manufacturing piping wrapped with soundproofing / soundproofing material, Can be improved.

  The characteristic configuration of the third soundproofing / soundproofing material of the present invention is that a soundproofing fiber body having a low specific gravity and a soundproofing fiber body having a high specific gravity are stacked, a non-woven fabric is attached to the surface of the soundproofing fiber body, and the sound insulation fiber A metal sound-insulating sheet is attached to the surface of the body, and the stacked fiber bodies are joined together by a number of flexible fibers dispersed in the mating plane direction.

  According to such a configuration, in addition to the bendability of the soundproofing / soundproofing material, the soundproofing fiber can be peeled off from the surface side by attaching the nonwoven fabric to the soundproofing fiber body having a low specific gravity where the soundproofing fiber is easily peeled off. In addition to maintaining the performance, by attaching a metal sound insulation sheet to the surface of the sound insulation fiber body having a high specific gravity, the sound leaked from the sound insulation fiber body is reflected and prevented from leaking outside. Therefore, the sound insulation can be improved.

  Therefore, in addition to a function that is easy to bend, it is possible to improve sound insulation and sound insulation, so that it is possible to provide a high-quality sound insulation and sound insulation material.

  The characteristic configuration of the fourth soundproofing / sound insulating material of the present invention is a fiber in which the fiber is drawn out in a state that spans both fiber bodies as the needle punches in and out of the stacked fiber bodies, Both fiber bodies are composed of rock wool.

According to such a configuration, a large number of fibers can be provided in a coupled state across both the soundproof fiber body and the sound insulation fiber body by means of a kneaded punch, so that a soundproof / sound insulation material can be produced efficiently. .
Moreover, the manufacturing cost can be reduced by using inexpensive rock wool for the fibers forming the soundproof fiber body and the sound insulation fiber body.

  Therefore, it is possible to improve manufacturability and cost.

Hereinafter, an embodiment of the soundproofing / soundproofing material of the present invention will be described with reference to the drawings.
[First Embodiment]
As shown in FIG. 1 and FIG. 2, the soundproofing / sound insulating material A of this embodiment is obtained by stacking a soundproof fiber body 1 having a low specific gravity and a soundproof fiber body 2 having a high specific gravity. 2 are combined by a large number of flexible fibers 3a dispersed in the mating surface direction X.

  In the soundproof fiber body 1, for example, rock wool is used as a soundproof fiber material, and a nonwoven fabric 3 formed of synthetic resin fibers such as polyethylene is attached to the surface thereof.

  The sound insulation fiber body 2 is made of, for example, rock wool as a sound insulation fiber material, and a sound insulation sheet 4 made of metal such as aluminum is attached to the surface of the sound insulation fiber body 2 with an adhesive 5.

  The fiber 3a is formed by stacking the soundproof fiber body 1 and the soundproof fiber body 2, and a large number of needles from the nonwoven fabric 3 attached to the soundproof fiber body 1 are brought into the body of the sound insulation fiber body 2 as the needle punch enters and leaves. And the non-woven fibers constituting the nonwoven fabric 3 are made to extend from the soundproof fiber body 1 to the sound insulation fiber body 2.

  The fiber 3a drawn to the sound insulation fiber body 2 is entangled with the rock wool cutting fiber and integrated with the sound insulation fiber body 2 while cutting the sound insulation fiber of high specific gravity rock wool.

  As a result, the nonwoven fabric 3, the soundproof fiber body 1, and the sound insulation fiber body 2 are combined. Since this bonded fiber 3a is a fiber that is forcibly pulled out from the nonwoven fabric 3, an elastic force acts so as to pull the two fiber bodies 1 and 2 of the soundproof fiber body 1 and the sound insulation fiber body 2 closer together. As a result, the sound insulation fiber body 2 can form a tightly bonded state to the soundproof fiber body 1.

  Further, the coupling of the soundproof fiber body 1 and the sound insulation fiber body 2 by the fibers 3a by the needle punch is performed on the entire area of the mating surfaces of the stacked fiber bodies 1 and 2 so that the fibers 3a are aligned in the mating surface direction X. Are formed in a dispersed state.

  Furthermore, the nonwoven fabric 3 is attached to the surface of the soundproof fiber body 1 by the connection between the soundproof fiber body 1 and the sound insulation fiber body 2 by the fibers 3 a by needle punching.

  Since the fiber 3a has flexibility, the fiber 3a 1 and 2 are bonded to each other by flexibly deforming such as extending with respect to the relative movement of the mating surfaces of both the fiber bodies 1 and 2. The state will be maintained.

  With such a configuration, for example, when the soundproof fiber body 1 is bent in an inner circumferential side, the two fiber bodies 1 and 2 follow the relative movement of the soundproof fiber body 1 and the sound insulation fiber body 2. Since the fiber 3a that joins 2 can cope with the relative movement of the overlapping due to its flexibility, it can be easily bent while maintaining the joining of the two fibrous bodies 1 and 2.

  Moreover, in the soundproofing / soundproofing material A of this embodiment, since the nonwoven fabric 3 is attached to the soundproof fiber body 1 having a low specific gravity where the soundproofing fiber is easily peeled off from the surface side, the soundproofing property is prevented by preventing the peeling off. The sound insulation sheet 4 made of metal is attached to the surface of the sound insulation fiber body 2 with high specific gravity, so that the sound leaked from the sound insulation fiber body 2 is reflected and prevented from leaking outside. Therefore, the sound insulation can be improved.

  Next, the case where such a soundproofing / soundproofing material A is wound around the pipe 6 in a cylindrical shape as shown in FIG. 3 will be described.

  Examples of the target pipe 6 include a straight pipe, a joint pipe such as an elbow or cheese, and a branch pipe. Winding around the pipe 6 is necessary when the existing pipe or new pipe construction site is improved to be soundproof / soundproof piping, or when a pipe product with soundproofing / sound insulation function is provided by wrapping around the pipe. To be implemented.

  Specifically, the adhesive 7 is applied to the outer peripheral surface of the pipe 6, and the other side of the non-woven fabric 3 on one side of the soundproofing / sound insulating material A is used as a corresponding adhesive surface from the one end side to the outer peripheral surface along the circumferential direction. Wound up to the end side.

  At the time of winding, the bending reaction force of the soundproofing / sound insulating material A is strong, and it is difficult to wind when the adhesive strength of the adhesive 7 in a state where it is coated and can be bonded to the pipe 6 is difficult to wind. The soundproof fiber body 1 and the sound insulation fiber body 2 having a high specific gravity are stacked, and the stacked fiber bodies 1 and 2 are joined by a large number of flexible fibers 3a dispersed in the mating surface direction. Since the sound insulating material A is wound, since the winding is easy and the winding reaction force is weak, it can be wound regardless of the strength of the adhesive 7, so that the winding workability is good.

  In the pipe 6 around which the soundproofing / sound insulation material A is wound, noise such as drainage sound from the pipe 6 is attenuated by the soundproof fiber body 1 and is prevented from leaking outside by the soundproof fiber layer 2.

  Further, in the soundproofing / soundproofing material A in this embodiment, the fiber 3a that forms a bond between the soundproofing fiber body 1 and the soundproofing fiber body 2 is positioned in the body of the sound insulation fiber body 2, and penetrates the sound insulation fiber body 2. Therefore, the sound insulation fiber body 2 is covered with the sound insulation sheet 4 in a sealed state, and the sound insulation effect is not impaired.

[Another embodiment]
1) In the sound and sound insulation material A of the above embodiment, the example in which the fiber 3a for joining the sound insulation fiber body 1 and the sound insulation fiber body 2 is formed by needle punching has been described, but the present invention is not limited to this, and the sound insulation fiber body 1 is pulled out by driving a water jet punch in a state of passing through the sound insulation fiber body 2 from the side of the nonwoven fabric 3 attached to the fiber 1, and the fiber 3 a made of the drawn nonwoven fiber is extended from the sound insulation fiber body 1 to the sound insulation fiber body 2. Accordingly, the soundproofing / soundproofing material for joining the soundproofing fiber body 1 and the soundproofing fiber body 2 may be used.
In this case, after the soundproof fiber body 1 and the soundproof fiber body 2 are joined by the fiber 3 a, the sound insulation sheet 4 is attached to the surface of the sound insulation fiber body 2.

2) In the above embodiment, the soundproof fiber body 1 and the sound insulation fiber body 2 are formed from rock wool. However, the present invention is not limited to this, and even if both are glass wool, either one is locked. It may be made of wool and the other may be made of glass wool.

Exploded sectional view showing soundproofing and sound insulation materials Cross section of the main part showing the configuration of soundproofing and sound insulation materials Sectional view showing a state where soundproofing and sound insulation material is wound around the pipe in a cylindrical shape

Explanation of symbols

A Sound insulation / sound insulation material 1 Sound insulation fiber body 2 Sound insulation fiber body 3 Non-woven fabric 3a Fiber 4 Sound insulation sheet

Claims (4)

  A soundproofing / soundproofing material in which a soundproofing fiber body with a low specific gravity and a soundproofing fiber body with a high specific gravity are stacked, and the stacked fiber bodies are joined together by a number of flexible fibers distributed in the mating plane direction. .   A soundproofing / soundproofing material that can be wound around a pipe in a cylindrical shape, stacking a low specific gravity soundproof fiber body and a high specific gravity soundproof fiber body, and dispersing the stacked fiber bodies in the direction of their mating surfaces. Soundproofing / sound insulating material joined by a number of flexible fibers.   A soundproof fiber body having a low specific gravity and a soundproof fiber body having a high specific gravity are stacked, a nonwoven fabric is attached to the surface of the soundproof fiber body, a metal soundproof sheet is attached to the surface of the soundproof fiber body, A soundproofing / soundproofing material in which the stacked fiber bodies are joined together by a large number of flexible fibers dispersed in the mating surface direction. The binding fiber is a fiber drawn out in a state that spans both fiber bodies as the needle punches in and out of the stacked fiber bodies, and the both fiber bodies are made of rock wool. The soundproofing / sound insulating material according to any one of 3 above.

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