METHOD OF FOAMING RECYCLED CROSSLINKED POLYMERIC RESINS VIA SUPERCRITICAL DECROSSLINKING REACTION AND FORM MATERIALS MANUFACTURED BY THE SAME

摘要

PURPOSE: A manufacturing method of a foam product is provided to manufacture a foam product with uniform foam cells from waste crosslinked plastics. CONSTITUTION: A manufacturing method of a foam product comprises: a step of obtaining a recycled polyolefin resin by the supercritical decrosslinking reaction of waste plastics; a step of mixing 100 parts by weight of a base resin which comprises the recycled polyolefin resin, 1-10 parts by weight of a foaming agent, and 0.2-5 parts by weight of a crosslinking agent; and a step of foaming the mixture at 170 deg. C or more. The waste crosslinked plastic is a crosslinked polyolefin-based copolymer. The base resin comprises 10-100 weight% of the recycled polyolefin resin.