METHOD AND APPARATUS FOR MANUFACTURE OF LAMINATED OPTICAL DISC

摘要

When forming an adhesive layer (AS) between a first substrate (6) and a second substrate (9), and laminating the first substrate (6) and second substrate (9) to produce a disc (OD), temperature (T) and other various conditions are adjusted based on the adhesive layer thickness ( DELTA D) of the manufactured optical disc, to thereby change the viscosity ( nu ) of adhesive (PP) to match each process, and thus high quality discs can be consistently manufactured, and the operating efficiency of the manufacturing apparatus can be improved. Moreover, an optical disc free of bubbles mixed in the adhesive layer (AS) of a laminated optical disc (OD) can be stably manufactured.