Polyethylene-based resin expanded bead production method, and polyethylene-based resin expanded beads

Abstract

A method for producing expanded beads that have excellent in-mold moldability and produce a molded article of polyethylene-based resin expanded beads having a low shrinkage rate while increasing a biomass degree is provided. In the method, the polyethylene-based resin particles is composed of a mixed resin, which is obtained by kneading linear low-density polyethylene and branched low-density polyethylene, wherein the branched low-density polyethylene has a biomass degree of 30% or more and a heat of fusion of 95 J/g or more; a blending amount of the branched low-density polyethylene in the mixed resin is 5% by mass or more and less than 40% by mass, where a total of the linear low-density polyethylene and the branched low-density polyethylene is 100% by mass; and a heat of fusion of the polyethylene-based resin particle is 90 J/g or more.

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