SOUND ABSORBING SHEET FOR MEMBRANOUS CEILING

摘要

PROBLEM TO BE SOLVED: To provide a sound absorption sheet for a non-combustible membranous ceiling suitable for an indoor membranous ceiling construction and a luminous ceiling membranous construction excellent in light weight and performance effect by illumination and video projection and having an anti-resonance effect.SOLUTION: A sound absorption sheet 1 for a membranous ceiling includes an embedding part 3-1 into which a part of a resin fire-resistant layer 3 has infiltrated inside a nonwoven fabric 2 in a laminating interface between the nonwoven fabric 2 and the resin fire-resistant layer 3 as a laminate disposed with the resin fire-resistant layer 3 including a silicon-based resin or a soft vinyl chloride-based resin on one surface of the nonwoven fabric 2 with the nonwoven fabric 2 including a glass filament in a main body as a base material. The depth of this embedding part 3-1 has 1 to 35% of the thickness of the nonwoven fabric.SELECTED DRAWING: Figure 1