Soundproof structure and method of manufacturing soundproof structure
AssigneeNitto Denko Corporation
InventorsTetsuya OTSUKA, Naoto HAYASHI, Takeshi SUTOU
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Abstract
A soundproof structure includes a porous fibrous body that attenuates incident sound waves, wherein the fibrous body is formed of fibers having an average fiber diameter of 0.5 μm or more and 5 μm or less, and includes a surface layer on which the sound waves are incident and a propagation layer that is stacked with the surface layer and that propagates the sound waves from the surface layer, and wherein the propagation layer includes a high density layer having a density higher than a density of the surface layer.
Claims6
A soundproof structure comprising:
- a porous fibrous body that attenuates incident sound waves,
- wherein the fibrous body is formed of fibers having an average fiber diameter of 0.5 μm or more and 5 μm or less, and includes a surface layer on which the sound waves are incident and a propagation layer that is stacked with the surface layer and that propagates the sound waves from the surface layer, and
- wherein the propagation layer includes a high density layer having a density higher than a density of the surface layer.
A method of manufacturing a soundproof structure including a porous fibrous body that attenuates incident sound waves, the method comprising:
- a step of forming a surface layer on which the sound waves are incident and a step of forming a high density layer having a density higher than a density of the surface layer, using fibers having an average fiber diameter of 0.5 μm or more and 5 μm or less.
Dependencies are inferred from the claim text.