Method of forming a shaped article of resin using cavity enlargement to induce foaming

摘要

A shaped article of resin disclosed which possesses a two-ply construction wherein the outer side of a core-layer resin foamed at a void ratio in the range of from 30 to 80% is wrapped with a skin-layer resin. This shaped article of resin is produced by a method which comprises injecting a skin-layer resin into a molding mold and subsequently or simultaneously injecting therein a core-layer resin foamed in advance in a molding device.