MICROCELLULAR FOAM OF THERMOPLASTIC RESIN PREPARED WITH DIE HAVING IMPROVED COOLING PROPERTY AND METHOD FOR PREPARING THE SAME

摘要

The present invention relates to a microcellular foam of a thermoplastic resinand a method for preparing the same, and more particularly to a microcellularfoam comprising a skin layer having a porosity of below 5% and a core layerhaving a porosity of at least 5%, wherein the thickness of the skin layeraccounts for 5 to 50% of the entire foam, and a method for preparing the same.The microcellular foam of the present invention is advantageous in that it hasa thicker skin layer and smaller and uniform micropores in the core layer,compared with conventional microcellular foams, while having mechanicalproperties comparable to those of conventional non-foamed sheets.