| 摘要 |
PURPOSE: A double-sided printing sheet for manufacturing a pennant type safety sign board is provided to arrange a printed design to a front side in which the rear surface of the printed design is printed, thereby preventing discrimination degradation. CONSTITUTION: A printing sheet(1,2) is comprised of a pair of thermoplastic synthetic resin materials and has high luminosity in order to clearly display the color of a printed design. An inner sheet(3) made of a dark color thermoplastic synthetic resin material is inserted between the printing sheets. The inner sheet and the printing sheet are laminated into a triple structure through a thermosetting attachment process. |
