INTERIOR SOUND ABSORPTION SHEET AND SOUND ABSORBING SOUND-PROOFING PANEL CONTAINING SAME

摘要

Provided is a sound absorption sheet comprising: a porous substrate; and a micro-resonance layer having a pattern of a plurality of sound-absorbing holes penetrating both surfaces thereof. Also provided is a sound absorbing soundproofing panel, the exterior surface of which is covered with the sound absorption sheet comprising: the porous substrate; and the micro-resonance layer having a pattern of a plurality of sound-absorbing holes penetrating both surfaces thereof.