| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a film key not causing a functional failure even when the film key is exposed in an exposition condition of 85°C and for 96 hours, and to provide a film key manufactured by the above method. SOLUTION: The film key is manufactured by forming a laminated sheet molded body having a plurality of projection parts for push button of which, a part with a prescribed shape having the print layer is in a state of protruding upward, by drawing a laminated sheet with a print layer, a shielding layer and an adhesive resin layer laminated therein on one surface of a substrate layer made of polyester film; and by injection-molding a backing layer made of polycarbonate resin on the concave-shaped adhesive resin layer face on the back face of the projection part for the push button, after heat-shrinking a laminated sheet molded body at prescribed condition. COPYRIGHT: (C)2005,JPO&NCIPI
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