Patent ID: 6508961
Filing Date: 2003-01-21
Classification: B29C,Y10S

Abstract:
A method for molding an optical disk comprising:applying a thermally insulative mold insert onto a thermally conductive mold form by coating the mold insert on the mold form, the mold insert having a coefficient of thermal expansion compatible with the coefficient of thermal expansion of the mold form and comprising an adhesion promoting material; positioning the coated mold form in a thermally conductive mold apparatus with the mold insert positioned between the mold form and the mold apparatus; injecting a molten thermoplastic material into the mold apparatus; retaining the molten thermoplastic material in the mold apparatus for a time sufficient for the molten thermoplastic material to cool below its glass transition temperature to form the optical disk; and ejecting the optical disk from the mold apparatus.