| 摘要 |
PURPOSE:To obtain a multi-layered sheet having a surface of a freely curved shape by using a reaction-injection-molded substrate and a sheet having either information displaying functionality, antistatic functionality or surface hardness- changable functionality provided on the substrate. CONSTITUTION:As a raw material for molding, a raw material compsn. such as polyurethane, nylon, dicyclopentadiene, polyester and epoxy is used. A multi- layered sheet I is a product wherein an information recording sheet 22 is laminated on a reaction-injection-molded substrate 24 and a transparent sheet 23 is laminated thereon. In addition, a multi-layered sheet II is a product wherein a hardness-changable sheet or an antistatic sheet 25 is laminated on the reaction- injection-molded substrate 24. On the multi-layered sheets, the peripheral part is covered with a resin mold 21 and a freely curved shape can be obtd. by cutting freely it by means of an ordinary cutting device. |
