Expanded Molded Article Having Voids

摘要

An expanded molded article having a void percentage of 5 to 50%, the molded article comprising 50 to 800 parts by weight of styrene-based resin relative to 100 parts by weight of non-crosslinked linear low-density polyethylene-based resin which can be obtained by using a metallocene catalyst, wherein the molded article is obtained by impregnating styrene-modified linear low-density polyethylene-based resin beads with a volatile blowing agent to provide expandable beads, pre-expanding the expandable beads and then subjecting the obtained pre-expanded beads to expansion molding, the styrene-modified linear low-density polyethylene-based resin beads each have the styrene-based resin dispersed in the form of particles, and a diameter of particle is 0.8 mum or smaller in a surface region within at least 5 mum from the bead surface and in a center region within a 5 mum radius from the bead center.