Patent ID: 8789651

Claim:
A structure having a sound absorption characteristic comprising: a surface layer having microscopic pores formed on a part of a surface, communicating passages communicating with the microscopic pores, and sound pores of a porous layer that are formed at an inner part deeper than the surface layer and that have a volume larger than volumes of the microscopic pore and the communicating passage, wherein the surface layer, the communicating passages, and the sound pores are provided on a portion where at least one of a sound absorption characteristic and a sound insulation characteristic that is desired, wherein a part of the sound pores communicates with the microscopic pore through the communicating passage, while another part of the sound pores forms closed spaces by being connected to the surface layer, and wherein the structure is formed by coating and foaming a foamable synthetic resin composition, which provides at least one of the sound absorption characteristic and/or the sound insulation characteristic by the microscopic pores of the surface layer, the communicating passages, the sound pores, and the surface layer which is in contact with the sound pores, on the portion where at least one of the sound absorption characteristic and the sound insulation characteristic is desired.