Patent ID: 6146558
Filing Date: 2000-11-14
Classification: B29C,Y10S

Abstract:
A method for molding an optical disk comprising:applying an adhesion promoter on a thermally conductive mold form;coating a thermally insulative mold insert on the adhesion promoter and the thermally conductive mold form, the mold insert having a coefficient of thermal expansion compatible with the coefficient of thermal expansion of the mold form;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; andejecting the optical disk from the mold apparatus.