| abstract |
An object of the present invention is to provide expanded resin particles capable of molding a sound-absorbing member excellent in sound-absorbing performance by a resin-expanded molded article. Moreover, it aims at providing the laminated body which uses the resin foam molded object as a base material, even if it is a thin material, high sound absorption performance is obtained. The resin expanded particles of the present invention are resin expanded particles containing a resin and having a concave external portion, wherein the ratio ρ 0 /ρ 1 of the density ρ 0 of the resin and the true density ρ 1 of the resin expanded particles is 2 to 20, , The ratio ρ 1 /ρ 2 of the true density ρ 1 of the expanded resin particles to the bulk density ρ 2 of the expanded resin particles is 1.5 to 4.0. |