| 摘要 |
PURPOSE:To prevent the flocculation of an adhesive agent for optical disks to be generated in the case of long-term preservation and to prevent the degradation in appearance by incorporating superfine particulate anhydrous silica into the above-mentioned adhesive agent. CONSTITUTION:After a recording film 2 and a protective film 3 are formed on a disk substrate 1, the adhesive agent 4 is roll-coated on the surface to prepare a one-face disk. Such disk are press-welded and stuck to each other by bringing the adhesive agents 4 into contact with each. The superfine particulate anhydrous silica is incorporated into the adhesive agent 4 in order to prolong the time to flocculation at this time. Since the flocculation of the adhesive agent 4 is thereby prevented over a long period of time, the appearance of the optical disk is not degraded even if said disk is preserved for a long period of time after the optical disk is stuck by the adhesive agent 4. |
