JPH068521U - Sound insulation composite panel - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sound insulating composite panel in which a surface layer is laminated on both surfaces of a core material layer, in which a reduction in transmission loss in a specific center frequency range is not observed. [Structure] A core material layer 4 is laminated between the surface layers 1 and 2 in a sandwich shape. The surface layer 1 is made of gypsum board, and the surface layer 2 is made of a vibration-proof rubber sheet.
A plate-like body having a size of m ² or more is used. The core material layer 4 is a mesh-like body made of rubber-like elastic material and having a checkered pattern. With such a laminated structure, the transmission loss in the specific center frequency range does not decrease, and the sound of any frequency is blocked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sound insulating composite panel mainly used as a wall material, floor material, ceiling material, etc. for construction.

[0002]

[Prior art]

 Conventionally, gypsum board has been used as a wall material, floor material, ceiling material, etc. for construction since it is cheaper than other materials and relatively easy to construct. However, as the number of apartment houses has increased recently, and even in the case of independent houses, residential areas close to highways and high-speed railroads often suffer from so-called noise pollution. The things that we have have come to be required.

[0003] Generally speaking, the sound insulation property is a physical property that prevents sound from being transmitted, and "transmission loss (TL)" is used to indicate the sound insulation property of a panel. This transmission loss is a decibel representation of how much the energy of the projected sound becomes weaker than the original projected energy when it penetrates the panel.

In the case of a panel made of a homogeneous material, the transmission loss is proportional to the logarithm of the weight per unit area of the panel. Therefore, a material having a higher density or a thicker one is better for improving sound insulation. Also, since the transmission loss of multiple walls is the sum of the transmission loss of each panel, it is known that the sound insulation is greater when the double wall is used than when the material is thickened.

[0005]

[Problems to be solved by the device]

 However, depending on the material of the panel, the transmission loss decreases in a certain frequency range. This decrease phenomenon (also known as coincidence effect) is attributed to the resonance of sound energy. Gypsum board is no exception, and it is known that there is a drop due to transmission loss, as shown in Fig. 4.

The one shown in FIG. 4 is one in which two gypsum boards are piled up and placed inside and outside with a stud in between to form a partition wall, and the transmission loss varies depending on the center frequency. The broken line graph shown by the lower solid line is for the partition wall showing the cross section below, and the broken line graph shown by the upper broken line is for the partition wall also showing the cross section above. In all cases, a decrease in this transmission loss is observed when the center frequency is between 2 kHz and 4 kHz.

Since the reduction of the transmission loss occurs in a relatively high tone range, for example, the noise of a child in the next house or the high tone of a stereo sound cannot be completely cut off. Even such a structure with partition walls cannot be sufficient countermeasures, so recently, sound-insulating panels in which lead, which is a high specific gravity substance, is attached to this gypsum board have become available in the market. . The aim is to improve the sound insulation performance and reduce the coincidence effect by applying lead, but the current situation is that the effect is still insufficient.

The present invention provides a sound-insulating composite panel that does not show a decrease in transmission loss in a specific frequency range, regardless of which structure is used, that is, one composite panel or a partition wall. It was done for the purpose.

[0009]

[Means for solving the problem]

The present invention has a "core material layer and surface layers laminated on both sides thereof, and the core material layer is made of a mesh-like body having a grid-like striped pattern made of rubber-like elastic material. A sound-insulating composite panel characterized by comprising a plate-like body having an areal density of 3 kg / m ² or more, at least one of which is a gypsum board ".

That is, the present invention provides a sound insulation having a surface layer made of a plate having an areal density of 3 kg / m ² or more, a sound insulation having a core material layer sandwiched therebetween, and its lattice. Its main purpose is to prevent the deterioration of sound insulation performance due to the reduction of transmission loss by utilizing the synergistic action with the special function described later that the space portion interposed between the striped patterns.

The plate-like body forming the surface layer used in the sound-insulating composite panel of the present invention must have an areal density of 3 kg / m ² or more, and if it is less than this, the desired effect is not obtained. I can't get it. A so-called anti-vibration rubber sheet is preferably used as the plate-like body satisfying this condition. In addition, a thermoplastic resin such as vinyl chloride resin may contain metal powder such as lead or iron, or silica sand. Examples thereof include a vibration-proof sheet formed by filling an inorganic high specific gravity substance into a sheet, a lead plate, a gypsum board, or the like.

The rubber-like elastic material forming the core layer used in the sound-insulating composite panel of the present invention is a so-called “elastomer” sealing material, such as silicone rubber, urethane rubber, polysulfide rubber and the like. Of rubber materials, in addition to rubber elasticity, refers to those that also have close-closed sealing properties, vibration absorption properties (shock vibration absorption properties), stress strain relaxation properties, etc., but silicone sealants for civil engineering and construction are particularly suitable. Can be adopted by.

The core material layer in the present invention must be a mesh-like body having a checkered pattern, and if the core material layer is provided on the entire surface between these surface layers, even if sound energy is projected on the panel, The desired effect cannot be exerted. The reason is that the intervening spaces between the striped patterns act to prevent resonance of sound energy that causes a reduction in transmission loss.

The checkered pattern is not particularly limited, and the shape of the string-shaped body arranged in the warp and weft direction may be a round bar shape or a square bar shape. The body may be woven or knitted in the longitudinal direction, or may be a plate-like body which is regularly opened to form a mesh.

Further, the cords arranged in the longitudinal and latitudinal directions preferably have a thickness and a width of 3 to 10 mm and an interval of 50 to 200 mm. If it is difficult to form a reticulated mesh, and if the spacing is less than this range, sufficient space for sound insulation cannot be obtained. Conversely, if it exceeds this range, the core material layer itself is Sound insulation performance is insufficient.

In the present invention, as a means for laminating the core material layer and the surface layer, one of the plate-like bodies forming the surface layer or one of the plate-like bodies forming the surface layer is used. A method in which a fluid core material forming material is applied or sprayed onto the facing surface using an applicator gun, and then pressure-bonded to form a laminate, or a core material layer previously formed in a predetermined mesh pattern And the like, and sandwiching them between the surface layers and laminating by pressure bonding using an always dry adhesive.

[0017]

[Action]

In the sound insulation panel of the present invention, since the plate-like body forming the surface layer is made of a plate-like body having an areal density of 3 kg / m ² or more, effective sound insulation is obtained, and at least Since one gypsum board is used, it is possible to obtain a gypsum board that has a certain degree of excellent workability.

Further, since the material forming the core material layer is a mesh-like body made of a rubber-like elastic material and exhibiting a checkered pattern, the sound energy projected on one surface of the panel is the rubber-like elastic material. The vibration damping property of itself and the ability to prevent the resonance of sound energy in the space formed by the core material layer prevent the occurrence of the resonance phenomenon.

[0019]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. In the figure, 1 and 2 are the surface layers of the sound-insulating composite panel 3 of the present invention. The surface layer 1 is composed of two gypsum boards with a thickness of 12 mm, and the surface layer 2 is a thickness. Is a 5.0 mm nitrile rubber anti-vibration rubber sheet.

Reference numeral 4 denotes a core material layer laminated on the surface layers 1 and 2 in a sandwich shape. Round bar-shaped silicone rubber cord-shaped bodies 5 and 6 having a diameter of 5.0 mm are arranged at intervals of 50 mm. It is formed in such a shape that it is separated from each other and intersects in the longitudinal direction without any step, and is previously molded by a punching method. A large number of space portions S, S ... Are formed in the mesh.

The laminated core layer 4 and the surface layers 1 and 2 are pressure-bonded to each other by using a normally dry adhesive to obtain the sound insulation panel 3 of the present invention. The obtained panel 3 has a total thickness of 22.0 mm and an area density of 17.4.

FIG. 3 shows the result of measuring the transmission loss for each center frequency of the panel 3 obtained as described above. The broken line A consisting of a solid line shows the transmission loss of the panel 3 which is the product of the present invention, and the broken line B consisting of a broken line is from the gypsum board (thickness of 12 mm, two sheets stacked, areal density: 16.6) It shows the transmission loss of the conventional product.

FIGS. 2A to 2D are plan views showing other examples of the striped pattern shape of the core material layer, in which FIG. 2A shows a cord-shaped body having a round bar cross section. No. 7 and No. 7 are formed in a shape in which they are diagonally intersected without any step. In the same figure (b), the cord-shaped body 8 having the same round bar cross section is formed into a shape in which the latitudinal direction intersects with the juxtaposed warp direction in a stepwise manner.

Further, as shown in the same front view (e) as the front view of the same (c), the one shown in FIG. (E) is a cord-shaped body having a rectangular cross section and having a wide width 9 and a narrow width. No. 10 is mixed with each other and is formed into a shape that intersects in the longitudinal direction without any step. In FIG. 4D, the flat plate 11 is formed by regularly forming rectangular through holes 12, 12 ...

1A and 1B and 2A to 2D show examples in which the cord-shaped bodies intersect in the longitudinal direction without any step, but in addition, the cords intersect in a plain weave pattern. Alternatively, the warp cords juxtaposed and the weft cords juxtaposed in the same manner may be formed by overlapping in the vertical direction.

[0026]

[Effect of device]

In the sound-insulating composite panel of the present invention, since the plate-like body forming the surface layer is a plate-like body having an areal density of 3 kg / m ² or more, effective sound-insulating properties can be obtained. Further, since the material forming the core material layer is a mesh-like body made of a rubber-like elastic material and exhibiting a checkered pattern, the sound energy projected on one surface of the panel is contained in the rubber-like elastic material itself. The anti-vibration property and the ability to prevent the resonance of sound energy in the space formed by the core layer prevent the occurrence of the resonance phenomenon.

Therefore, it is possible to eliminate a decrease in transmission loss of the gypsum board in a specific frequency range, and it is possible to provide a gypsum board excellent in sound insulation. In addition, since gypsum board is used as the material for forming the surface layer, the advantages such as the low material cost and the excellent workability that the conventional panel made of gypsum board can play are also large and small. Things are obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

2 (a) to (d) are plan views showing various other examples of the shape of the core material layer used in the present invention, and (e) is a front view of the same (c).

3 is a line graph showing the values of transmission loss for each center frequency of the product of the present invention shown in FIG. 1 in comparison with those of the conventional product.

FIG. 4 is a polygonal line graph showing the cross-sectional structures of two types of conventional products and showing the values of the transmission loss for each center frequency that each has.

[Explanation of symbols]

 1, 2 Surface layer 3 Sound insulation composite panel 4 Core material layer 5, 6, 7, 8, 9, 10 String 11 Flat plate 12 Through hole S Space part

Claims (1)

[Scope of utility model registration request] 1. A core material layer and surface layers laminated on both surfaces thereof, wherein the core material layer is made of a mesh-like body made of a rubber-like elastic material and exhibiting a grid-like striped pattern. , Areal density is 3k
A sound-insulating composite panel characterized by comprising a plate-like body of g / m ² or more, at least one of which is a gypsum board.