A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LAMINATE SOUND-ABSORBING MATERIAL
The present invention addresses the problem of providing a sound-absorbing material that has excellent sound absorption in the low-frequency range, the middle-frequency range, the high-frequency range, and the ultra-high-frequency range. A laminate sound-absorbing material that includes a porous layer and a base material layer. The porous layer is a fiber layer or comprises a microporous film. The mean flow pore diameter of the porous layer is 0.1-30 µm. The basis weight of the porous layer is 0.1-200 g/m2. The average sound transmission loss of the base material layer between 1,000 Hz and 12,500 Hz is at least 2 dB. The base material layer is arranged on a sound incidence side, and the porous layer is arranged a sound transmission side.
LAMINATE SOUND-ABSORBING MATERIAL
The present invention addresses the problem of providing a sound-absorbing material that has excellent sound absorption in the low-frequency range, the middle-frequency range, the high-frequency range, and the ultra-high-frequency range. A laminate sound-absorbing material that includes a porous layer and a base material layer. The porous layer is a fiber layer or comprises a microporous film. The mean flow pore diameter of the porous layer is 0.1-30 µm. The basis weight of the porous layer is 0.1-200 g/m2. The average sound transmission loss of the base material layer between 1,000 Hz and 12,500 Hz is at least 2 dB. The base material layer is arranged on a sound incidence side, and the porous layer is arranged a sound transmission side.
LAMINATE SOUND-ABSORBING MATERIAL
SCHALLABSORBIERENDES LAMINATMATERIAL
MATÉRIAU STRATIFIÉ ABSORBANT ACOUSTIQUE
HATTORI TAKAYUKI (author) / ITO HIDEMI (author)
2022-04-20
Patent
Electronic Resource
English
IPC:
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
/
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
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
SOUND WAVES ABSORBING LAMINATE COMPOSITE MATERIAL STRUCTURE
| European Patent Office | 2022
| European Patent Office | 2020