KR100569840B1 - Functional Sound Absorbing Material with Membrane Complex Laminated - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sound absorbing membranes that can be used in outdoor soundproofing facilities, such as road sound barriers, and more particularly, to sound absorbing membranes that can be used for soundproof walls of roof or tunnel type.

The sound absorbing film of the present invention is composed of a sound absorbing layer of a synthetic resin material composition having a predetermined thickness, preferably 9 to 11 mm, and a Teflon mixed fiber and PVC having a predetermined thickness, preferably 1.5 to 2.3 mm, on both surfaces of the sound absorbing layer. It is characterized by a functional membrane composite sound-absorbing membrane in which the membrane is bound. In addition, the synthetic resin material is characterized in that the polyester.

Sound Absorbing Membrane, Noise, Functional

Description

Functional Sound Absorbing Material with Membrane Complex Laminated}             

1 is a perspective view showing a conventional soundproof wall

2 is a cross-sectional view of a functional membrane composite sound-absorbing membrane according to the present invention.

Figure 3 is a perspective view showing an embodiment in which the membrane composite sound-absorbing membrane of the present invention is used as the roof of the ring-shaped sound-proof wall.

<Description of the symbols for the main parts of the drawings>

M: Membrane P: Polyester Layer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sound absorbing membranes that can be used in outdoor soundproofing facilities, such as road sound barriers, and more particularly, to sound absorbing membranes that can be used for soundproof walls of roof or tunnel type.

As industrialization progresses, noise sources are increasing, and awareness of noise regulation measures is also increasing. In particular, the role of sound barriers to prevent or absorb noise from vehicles during road traffic network expansion and maintenance has become important. In general, sound barriers are classified into sound absorbing, reflective, interference, and resonant types, and the sound absorbing materials used are glass wool + metal, ceramic materials, and aluminum materials (foamed aluminum, sintered aluminum, and fiber aluminum). , Ultra-light foam concrete, synthetic resin, and the like are used.

As shown in FIG. 1, the general upright sound barrier consists of assembling a plurality of struts 1 and a soundproof plate 2 fitted between the struts at a certain distance in a section where noise or dust is normally required. However, as the apartment becomes higher and the width of the road becomes wider, the noise blocking efficiency of the middle floor or more decreases. As a result, the sound absorbing material is improved and the height of the soundproof wall is increased, and the upper end part 3 of the soundproof wall is bent toward the center of the road so that the sound wave is straight. At the same time, the reflection effect can be improved.

However, the existing soundproof walls using porous concrete, steel, or wood will go out from their own weight, and the installation cost will increase accordingly. As the height increases, the moment of the wind will increase, so the safety design cost required will increase. There is no choice but to. Of course, the problem of harming the aesthetics of the city due to the high soundproof walls is another big problem. In addition, the sound absorbing materials described above may be mainly used as a side wall of the soundproof wall because it requires the internal support element or is a hard board of heavy weight. When using a sound absorbing material, such as metal or ceramic, which is a heavy weight on the roof requires a lot of foundation and support means to maintain it, the soundproof wall as a whole may be unstable load. In addition, in the case of soundproof tunnels, work is performed in the order of anchor installation, support installation, cutting of the support flange, soundproof plate installation, and flange welding, which may violate the original design standards. There is a problem of poor workability due to interference, field cutting and welding.

In addition, there is a problem in that the time required for the construction as described above is long, the cost is high, and the design tends to be uniform and monotonous.

On the other hand, when selecting a synthetic resin material of flexible (flexible) material for use in the roof structure, although there is no significant difference in sound absorption performance, as well as durability to withstand from wind and snow, it is porous and functions as adhesion of dust, etc. This has a problem of deterioration.

The present invention has been made to meet the above point, the object of the present invention is to increase the transportation and construction costs when using the existing rigid-type sound-absorbing material in the roof-type soundproofing facilities, excessive load of the basic structure To overcome the problem.

Another object of the present invention is to facilitate the joining of the foundation frame, maintain the rigidity to withstand loads such as strong wind and snow, and can be processed to remove the non-flammable or adhesive such as dust Do it.

In addition, the present invention provides a functional sound absorbing material that can maximize the sound absorbing effect by using multiple membrane structures.

In order to achieve the above object, the membrane composite sound absorption membrane of the present invention,

In the sound-absorbing film used for soundproofing facilities on roads and railroads,

A sound absorbing layer of a synthetic resin composition having a predetermined thickness, and a membrane made of Teflon mixed fiber and PVC having a predetermined thickness are bound to an upper layer or both surface layers of the sound absorbing layer.

The thickness of the polyester layer is 9 to 11 mm, and the thickness of the membrane is 1.5 to 2.3 mm.

In addition, the synthetic resin material is characterized in that the polyester.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components or parts are denoted by the same reference numerals as much as possible, and detailed descriptions of related known functions or configurations are omitted.

Figure 2 is a cross-sectional view of the functional membrane composite sound-absorbing membrane according to the present invention, the polyester layer (P) is bound between the two layers of membrane (M).

Membrane is generally adopted in the sound-absorbing membrane material of the present invention in that it increases the tensile strength of the tent material, prolongs its lifespan, is resistant to acids, alkalis, etc., and has little effect of high temperature and low temperature. Although it is developed, PVF, a PVC material, is preferable for mass production and workability.

In addition, the above-described membrane is a fabric made to be freely used in a large space structure, and a strong base fabric, especially a Teflon material, is recommended in order to increase tensile strength, and may be implemented only as an upper layer of the polyester layer P as necessary. .

In addition, the polyester layer (P) is to improve the separation of the two membranes, that is, the membrane structure basically has a basic, porous polyester is adopted. Polyester is a fibrous material that contains a large amount of air layers for sound absorption, and materials that can replace glass wool, rock wool, etc. in terms of environmental protection are adopted.

The thickness of the polyester layer (P) and the membrane (M) is improved as the sound absorption increases, but on the contrary, the thickness should be thin for ease of transportability and transportability required for the roof material of the roof type soundproof wall. Therefore, as one embodiment for sound absorbing performance and workability can be adopted as the sound absorbing layer 9 ~ 11 mm, the membrane 1.5 ~ 2.3 mm, other combinations are possible.

The binder means of the polyester layer (P) and the membrane (M) described above is a durable synthetic resin adhesive (adhesive), which is required to be similar to the material of the polyester and the membrane.

3 is a perspective view showing an embodiment in which the membrane composite sound-absorbing membrane of the present invention is used as a roof of a ring-shaped soundproof wall, in which the sidewalls of the soundproof wall have a general soundproof board 13 on the foundation 11 of the edge of the road 10. It is fixed to (12), and the horizontal support 14 is extended to a predetermined position apart from the side wall, and the horizontal support 14 is provided with a membrane composite sound-absorbing membrane 15 including a vent (E). As a result, the noise shielding effect is high because the noise shielding area is widened spatially. In addition, it is not necessary to raise the height like a conventional soundproof wall in order to increase the sound absorption performance, because the height of the side wall is reduced only as necessary for vehicle communication, the stability to the wind tunnel is much improved.

As described above with reference to the drawings illustrating a functional membrane composite sound-absorbing membrane according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, but within the scope of the technical idea of the present invention Various modifications can be made by those skilled in the art.

According to the functional membrane composite sound-absorbing membrane according to the present invention as described above,

First, the synthetic resin material is less than its own weight, such as metal or concrete, the weight of the self will be less when it is used in places such as roof type soundproof walls and soundproof tunnels can be reduced.                     

Second, since it is a flexible membrane structure that does not use internal support elements, it can be cut and bonded in advance by design at the factory, so that it can be directly installed and constructed on site, thereby shortening construction period and reducing construction cost. In particular, existing soundproofing plates, such as metal or concrete, are made of rigid bodies and are very complicated to be bonded to the framework. However, this membrane composite sound-absorbing membrane has sufficient flexibility and easy on-site bonding, so the construction period is very short.

Third, because the membrane uses a Teflon mixed fibrous material or a tent material such as PVC, it is possible to secure the rigidity that can be used with the structure,

Fourth, because it is a membrane structure, it is possible to cover a large space, so that the design of a free soundproof wall is possible, and the use of various spaces and the free appearance of the appearance form can avoid the monotonous aesthetics of existing soundproofing facilities.

Fifth, since a coating treatment for flame retardant treatment or a photocatalyst coating such that dust and foreign matters cannot be easily adhered to is easy, the problem of artificial cleaning is reduced, and light transmittance can be maintained.

Sixth, the membrane structure itself has sound absorbing effect because it has moderate flexibility and breathability in the base material, and it is possible to obtain more excellent sound absorbing and sound insulating effect by stacking a separate sound absorbing material inside with the double membrane structure. It works.

Claims (3)

In the soundproof wall used for the soundproofing of the road or railroad side, the soundproof plate is fixed to the base of the edge of the road by a strut, the horizontal support is extended at a predetermined distance apart from the soundproof plate, and the sound absorbing film is provided on the horizontal support and used as a roof. The sound-absorbing membrane is a sound-absorbing layer of a synthetic resin material composition of a predetermined thickness, a membrane made of Teflon mixed fibers and PVC of a predetermined thickness as the upper layer or both surface layer of the sound-absorbing layer is bound, The thickness of the synthetic resin material is 9 to 11mm, the thickness of the membrane is 1.5 to 2.3mm, The synthetic resin composite sound-absorbing membrane, characterized in that the polyester. delete delete

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