| 摘要 |
<p>PROBLEM TO BE SOLVED: To dispense with a frame for preventing the deformation of a surface in use, and prevent the breakage in bending by providing a marker formed of a plastic sheet having a specified flexibility and a rigidity for keeping a smooth surface. SOLUTION: A display sheet is formed of a plastic having a flexibility of the extend to which it can be wound 180 deg. around a cylindrical spindle having a diameter of about 5.08 cm while keeping the state returnable to a smooth surface without being broken at about 20 deg.C, and a rigidity of the extend to which it can keep a flat surface state free from shrinkage, corrugated wrinkle or dent in use when mounted on a frame 12 having a simple structure having no special tensile element. The center part of the sheet is preferably reinforced by a cloth layer. The display is formed by selectively solution-removing a prescribed part of a second plastic layer having a different color on a first plastic, and a third plastic layer is arranged as a barrier layer between the first and second layers.</p> |
