JPH0335767Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a soundproof panel and is used in the structural field of interior materials of buildings such as wall panels and ceiling panels.

(Prior Art) Conventionally, various structures of soundproof panels for the purpose of sound insulation have been proposed. For example, a space layer is formed inside the panel to attenuate the sound waves that pass through that area, or a panel is filled with glass wool or other sound absorbing material to attenuate the sound waves that pass through the sound absorbing material. In addition, the inside of the panel has a honeycomb structure so that the sound waves that pass through the honeycomb are attenuated by the honeycomb structure.

(Problems to be Solved by the Invention) Although each of the conventional soundproof panels has been recognized to have a certain sound insulation effect, it has not been possible to obtain an average sound insulation effect over a wide frequency range. In other words, those that have a satisfactory sound insulation effect in the low frequency range generally have insufficient sound insulation effects in the high frequency range, and those that are satisfactory in the high frequency range have problems in that they are insufficient in the low frequency range. . Therefore, in order to achieve a complete sound insulation effect, it was necessary to combine two types of sound insulation panels.

(Means for solving the problem) The soundproof panel of this invention consists of plywood, a soundproof sheet made of a synthetic resin containing a high-density material, and a fireproof board, which are successively laminated on both sides with an intermediate sound-absorbing layer in between. This feature solves the above problem.

The sound absorbing layer is constructed by filling a space layer with a sound absorbing material such as glass wool or asbestos.

(Function) According to the soundproof panel of this invention, since soundproof sheets are arranged on both sides of the intermediate sound absorption layer, high soundproof performance can be obtained over a wide frequency range due to the combined effect of the sound absorption layer and the soundproof sheet. Furthermore, since a fireproof plate is arranged on the outside of each panel, a fireproof panel can be obtained. Furthermore, since several types of members are laminated and a sound absorbing layer is formed with a space filled with a sound absorbing material in the middle, a panel with heat insulation properties can be obtained.

(Example) An example of this invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, the soundproofing panel 1 has plywood 3 and soundproofing layers on both sides of a soundabsorbing layer 2 (constructed via a frame material and a timber not shown) constructed in the middle part. It is constructed by sequentially laminating sheets 4 and fireproof plates 5. The sound absorbing layer 2 is constructed by filling a space within a framework made up of a frame material 6 and a bamboo material 7 with glass wool 8. In the above, the thickness of the sound absorbing layer 2 was 2.7 cm. Also, plywood 3 was a plywood board with a thickness of 4 mm. Sound insulation sheet 4 has a thickness of 1.2 mm and an areal density of 2.1 Kg/m ²
A vinyl chloride sheet containing a high specific gravity material (Daiken Sound Insulating Sheet 940B manufactured by Daiken Industries, Ltd.) was used.
Moreover, a gypsum board with a thickness of 9 mm was used for the fire prevention board 5.

Sound insulation panel 1 configured as above (size 83
When the transmission loss was measured (cm x 70 cm), the results were obtained as shown by the solid line in Figure 3. That is, the center frequency is 30 dB over a wide range from 125 Hz to 4000 Hz.
There was a transmission loss above.

In the figure, the dashed lines indicate the sound insulation characteristics of various grades. That is, the soundproof panel 1 of the example has D-
Although the characteristics are intermediate between grades 35 and D-40, the sound insulation characteristics are significantly improved in the low frequency range.

(Effects of the invention) As explained above, according to this invention, a sound-absorbing layer and a sound-insulating sheet made of synthetic resin containing a high-density substance are combined, so it has high sound-insulating performance over a wide frequency range. This has the effect of providing a soundproof panel with a relatively thin material thickness. It also has heat insulation performance, and since a fireproof plate is provided on the outermost surface, it has the effect of providing a soundproof panel that also has fireproof performance.

[Brief explanation of the drawing]

Figure 1 is a partial sectional view of an embodiment of this invention, Figure 2 is a partial sectional view of an embodiment of this invention.
The figure is also a partial perspective view, and FIG. 3 is a graph showing the transmission loss characteristics of an embodiment of this invention. 1...Soundproof panel, 2...Sound absorbing layer, 3...Plywood, 4...Sound insulation sheet, 5...Fireproof board.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A soundproof panel characterized in that plywood, a soundproof sheet made of a synthetic resin containing a high-density substance, and a fireproof board are sequentially laminated on both sides with an intermediate sound-absorbing layer in between. 2. The soundproof panel according to claim 1, wherein the sound-absorbing layer is constructed by filling a space layer with a sound-absorbing material.