A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LAMINATE SOUND ABSORBING MATERIAL
To provide a sound absorbing material that has excellent sound absorbency in all of a low frequency region, a middle frequency region, a high frequency region, and an ultra high frequency region.SOLUTION: A laminate sound absorbing material has: a porous layer that is composed of a fiber layer or a microporous film and has an average flow rate pore size of 0.1-30 μm and a basis weight of 0.1-200 g/m; and a substrate layer with an average sound transmission loss at 1000-12500 Hz being 2 dB or more, the porous layer being disposed to be on the sound transmission side.SELECTED DRAWING: Figure 1
【課題】低周波数領域、中周波数領域、高周波数領域、及び超高周波領域のすべてにおいて優れた吸音性を有する吸音材の提供。【解決手段】繊維層または微多孔膜からなり、平均流量細孔径が０．１〜３０μｍ、目付けが０．１〜２００ｇ／ｍ２である多孔質層と、１０００〜１２５００Ｈｚでの平均音響透過損失が、２ｄＢ以上である基材層とを含み、多孔質層が音の透過側となるように配置される、積層吸音材。【選択図】図１
LAMINATE SOUND ABSORBING MATERIAL
To provide a sound absorbing material that has excellent sound absorbency in all of a low frequency region, a middle frequency region, a high frequency region, and an ultra high frequency region.SOLUTION: A laminate sound absorbing material has: a porous layer that is composed of a fiber layer or a microporous film and has an average flow rate pore size of 0.1-30 μm and a basis weight of 0.1-200 g/m; and a substrate layer with an average sound transmission loss at 1000-12500 Hz being 2 dB or more, the porous layer being disposed to be on the sound transmission side.SELECTED DRAWING: Figure 1
【課題】低周波数領域、中周波数領域、高周波数領域、及び超高周波領域のすべてにおいて優れた吸音性を有する吸音材の提供。【解決手段】繊維層または微多孔膜からなり、平均流量細孔径が０．１〜３０μｍ、目付けが０．１〜２００ｇ／ｍ２である多孔質層と、１０００〜１２５００Ｈｚでの平均音響透過損失が、２ｄＢ以上である基材層とを含み、多孔質層が音の透過側となるように配置される、積層吸音材。【選択図】図１
LAMINATE SOUND ABSORBING MATERIAL
積層吸音材
HATTORI TAKAYUKI (author) / ITO HIDEMI (author)
2020-02-06
Patent
Electronic Resource
Japanese
IPC:
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
B60R
Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen
,
VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
SOUND WAVES ABSORBING LAMINATE COMPOSITE MATERIAL STRUCTURE
| European Patent Office | 2022
| European Patent Office | 2020