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AssigneesJnc Corporation, Jnc Fibers Corporation
InventorsTakayuki HATTORI, Masaru NISHIJIMA
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To provide a sound-absorbing material that exhibits sound-absorbing property excellent in a low frequency region, and is also excellent in space-saving performance. The laminated sound-absorbing material contains a plurality of fiber layers, and a base material layer existing between the fiber layer and the fiber layer, in which the laminated sound-absorbing material contains at least three fiber layers, each fiber layer is formed of fibers having a fiber diameter of less than 450 nanometers, and has a basis weight of 0.1 to 50 g/m2, and the base material layer has a basis weight of 1 g/m2 or more and a thickness of 0.1 millimeter or more, and the base material layer is at least one selected from the group of a nonwoven fabric, a film, a glass fiber and paper.
A laminated sound-absorbing material containing a plurality of fiber layers, and a base material layer existing between a fiber layer of the plurality of fiber layers and other fiber layer of the plurality of fiber layers, wherein the laminated sound-absorbing material contains at least three fiber layers, and each fiber layer is formed of fibers having a fiber diameter of less than 450 nanometers and a basis weight of 0.1 to 50 g/m2, and the base material layer has a basis weight of 1 g/m2 or more and a thickness of 0.1 millimeter or more, and the base material layer is at least one selected from the group of a nonwoven fabric, a film, a glass fiber and paper.
Dependencies are inferred from the claim text.