| 摘要 |
PURPOSE:To improve the adhesive power between an adhesive agent layer and substrate by joining a joining part by a UV-curing epoxy adhesive agent via a chlorinated polyolefin layer provide between the substrate and recording layer. CONSTITUTION:The epoxy UV-curing adhesive agent is provided via the chlorinated polyolefin layer in the joint region of two sheets of the substrates or between the substrate and annular spacer of an information recording medium constituted by joining two sheets of the above-mentioned substrates directly or via the inside or outside spacer by the adhesive agent and providing the recording layer on the inside surface of at least one of the substrates. More specifically, the three; the chlorinated polyolefin and the UV-curing epoxy adhesive agent plus a primer make inter-diffusion between each other in the joint part and therefore, the high adhesive power is maintained even in the case of transporting and preserving the recording medium under the environmental conditions of the severe temp., humidity, etc. The breakdown of the recording medium by the deformation of the substrates, etc., is thus prevented and the durability thereof is improved. |
