Carbonaceous hollow molded article and fabrication method thereof

Abstract

Disclosed is a seamless central diameter expanded hollow molded articles made only of glasslike carbon. A fabrication method of the seamless carbonaceous hollow molded article having an expanded core includes: a cast-molding process, in which a liquid thermosetting resin is poured into a cavity formed between a core and an outer body made of a thermally fusible (or hot meltable) material, and a seamless thermosetting resin molded article having an expanded core is formed in hollow shape; a core flowing out process, in which the thermally fusible material of the cast molded core melts by heating and flows out; and a carbonization process, in which the thermosetting resin molded article is carbonized.

Dependencies are inferred from the claim text.