Mitsubishi Chemical Corporation

Masanari Nakayama

Naoyuki Uchida

Kazuma Inoue

Shogo Koga

Haruki Koshitouge

Yuya Saito

The present invention addresses the problem of providing a sound insulating structure which provides a sufficient sound insulating effect even when an adhesive layer is arranged therein, and in which a shift in the frequency band where the sound insulating effect is generated is unlikely to occur. This sound insulating structure includes, at least: a sound insulating member that includes a sheet-like sheet section and plural projections arranged on the sheet section; and an adhesive layer arranged on a surface of the sheet section on the opposite side of the side provided with the projections, and the sound insulating structure satisfies the following Formula (1): E_glue/I_glue>0.5×(E_membrane/H) (1) (wherein, E_glue (MPa): storage modulus of adhesive layer, I_glue (mm): average thickness of adhesive layer, E_membrane (MPa): storage modulus of sheet section and projections, and H (mm): average height of sheet section and projections).

Sound insulating structure

To provide a sound insulation sheet member which is excellent in sound insulation performance in a low frequency band and which has a compact configuration. A sound insulation sheet memberincluding a substrateand a concavo-convex structureplaced on at least one surface of the substrate, in which the concavo-convex structureis provided by repeatedly arranging a plurality of units each defined as a concavo-convex unit shapeincluding a linear convex portion, in one direction at substantially constant intervals on the surface of the substrate

Growing community of inventors

Tokyo, Japan

Masanari Nakayama