| 摘要 |
PURPOSE:To obtain an optical recording medium which obviates deterioration of an optical recording layer by an adhesive agent and exfoliation by repetitive bending by using a thermoplastic adhesive agent contg. a specific compd. and trackifier in the adhesive agent for forming an adhesive layer. CONSTITUTION:This optical card is constituted by providing the optical record ing layer 2 on the track groove surface of a substrate 1 having track groove parts 5 and sticking a protective base material 4 on the optical recording layer 2 via the adhesive layer 3. The thermoplastic adhesive agent contg. at least 1 kind of the copolymers selected from an ethylene/acrylic acid copolymer and ethylene/acrylate copolymer and/or ethylene/maleic anhydride/acrylic acid ternary copolymer and the tackifier is used for the adhesive layer 3. The optical recording medium which obviates the erosion of the optical recording layer 2 by the adhesive agent and the exfoliation in spite of repetitive bending is thereby obtd. |
