Examples of the thermoplastic resin to be used for such foamed moldings include thermoplastic resins such as polypropylene, polyethylene, polyethylene terephthalate (PET), acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene terpolymer (ABS resin), polystyrene (PS resin), polycarbonate resin (PC resin) and polyamide; or polymer alloys composed of those thermoplastic resins.