Patent ID: 8901182

Claim:
A process for producing expanded polyolefin resin particles with use as a foaming agent of water contained in an aqueous dispersion medium, the process including the steps of: dispersing polyolefin resin particles together with the aqueous dispersion medium into a closed vessel; heating the polyolefin resin particles up to or above a softening temperature of the polyolefin resin particles and pressurizing the polyolefin resin particles; and releasing the polyolefin resin particles into a zone whose pressure is lower than an internal pressure of the closed vessel, the polyolefin resin particles being composed of a polyolefin resin composition comprising: polyolefin resin; polyethylene glycol homopolymer in not less than 0.05 parts by weight to not more than 2 parts by weight to 100 parts by weight of the polyolefin resin; and a foam nucleating agent; wherein the polyethylene glycol homopolymer is a PEG homopolymer that excludes the presence of any additional co-monomers and wherein the polyethylene glycol homopolymer has an average molecular weight of not less than 200 to not more than 9,000.