Core material for automobile bumpers.

摘要

A core material for automobile bumpers is composed of a molded article of foamed particles of a polypropylene-type resin, the molded article has a density of 0.015 to 0.045 g<Sub>/</Sub>cm<Sup>3</Sup> and a compression stress at 50% compression of at least 1 kg/cm<Sup>2</Sup> (98 kPa). The core material has excellent energy absorbing property and dimensional recovery and a low density.