| 摘要 |
PROBLEM TO BE SOLVED: To realize a sound absorptive panel capable of suppressing noise of a wide frequency range from leaking outside, without installing a special device.SOLUTION: A sound absorptive panel 5 has a tabular shape as a whole and is arranged in a state facing a space S including a noise generation source. The sound absorptive panel 5 includes: a sound absorptive layer 51 including zeolite particles 512 being a plurality of porous particles and a frame material 511 being a coupling member that makes the zeolite particles 512 couple or contact with each other; and a backup layer 52 positioned opposite to the space S while interposing the sound absorptive layer 51, and having a solid inner structure. A sound absorptive face 5a facing the space S of the sound absorptive layer 51 is porous. The zeolite particles 512 are exposed to outside. |
