CORE MATERIAL FOR AUTOMOBILE BUMPERS

摘要

A core material for automobile bumpers which 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/cm3 and a compression stress at 50% compression of at least 1 kg/cm2. The core material simultaneously has excellent energy absorbing property and dimensional recovery and a low density.