To provide a sound absorption structural body showing excellent sound absorption efficiency without using any thick fibered sound absorbing material by sticking a sound absorbing film on a perforated board partially in a state of non-tensile force.
In this sound absorption structural body, a sound absorbing film 2 is laminated on one side or both sides of a metal plate (punching metal 1) having a large number of openings, and the sound absorbing film 2 is made to partially adhere to the metal plate 1 in a state of non-tensile force. The metal plate 1 sticking the sound absorbing film 2 thereon is combined with a frame structural body 4 such as channel steel, and sound absorbing frequency is controlled by providing a rear side air layer 5 between the metal plate 1 and frame structural body 4.
| JP2866860 | [Title of Invention] Soundproofing material |
| JP2004084216 | PARTITION WALL |
| WO/2020/169169 | JOINT TAPE |
YUZURIHA KAZUHITO
TSUCHIYA NOBUYUKI
KOSHIISHI KENJI
