Patent ID: 8435615

Claim:
A hollow foamed blow-molded article having a polypropylene-based resin foam layer, wherein the polypropylene-based resin foam layer has an equilibrium compliance Je 0 of 2.0×10 −3 Pa −1 to 15.0×10 −3 Pa −1 and a swell S of 2.5 or less, wherein the foam layer has an apparent density “d” of 0.20 to 0.65 g/cm 3 and a ratio a/c of an average cell diameter “a” in the thickness direction of the molded article to an average cell diameter “c” in the longitudinal direction of the molded article of 0.1 to 0.5, and wherein the hollow foamed blow-molded article has an average molded article thickness T of 1 to 5 mm and a variation coefficient Cv of the molded article thickness of 50% or less.