| abstract |
To provide a clean sound-absorbing material that has sound-absorbing characteristics in a low-frequency range, does not require an assembly process, is not unnecessarily thick, and has no problem that fine particles or fibers are dissipated. . A sound absorbing material (1) comprises a matrix resin (2) constituting an open-cell foam made of a thermoplastic resin, and a fibrous material (3) dispersed in the matrix resin. The fibrous substance (3) has a hollow part (4) over its entire length. [Selection] Figure 1 |