| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-reliability recording medium by bonding two transparent resin boards with a filmy optical setting adhesive contg. a copolymer of ethylene, vinyl acetate and maleic acid and/or maleic anhydride as a main component to tightly bond the resin boards mutually at a good operability. SOLUTION: Two transparent resin boards 1, 2 having reflective layers 1a, 2a formed on signal bit surfaces for digital video discs of a double-side read system or two boards 1, 2 having a semitransparent layer 1b and a reflective layer 2a formed on signal bit surfaces for digital video discs of a single-side read system are mutually bonded, using an optical setting adhesive contg. a copolymer of ethylene, vinyl acetate and maleic acid and/or maleic anhydride as a main component, and the copolymer of ethylene, vinyl acetate and maleic acid and/or maleic anhydride as a main component has pref. a vinyl acetate content of 10-50 wt.%. |
