| 摘要 |
PROBLEM TO BE SOLVED: To provide a hinge sheet having relatively high tensile strength and tearing strength, and difficult to be restored to an original state when damage is inflicted thereon.SOLUTION: A hinge sheet includes a pair of resin films, and a sheet made of fiber arranged between the pair of resin films in which each fiber of the resin films and the sheet formed of fiber includes the same polymer as a main constituent. A difference between the refractive index of the resin film and the refractive index of the sheet made of fiber is preferably ≤0.1, each main constituent of the resin film and the sheet made of fiber is preferably an urethane-based resin, a part of the resin film preferably enters spaces of the fibers of the sheet formed of fiber, an average thickness is preferably 50-300 μm, the pair of resin films contain coloring agents, and the sheet formed of fiber preferably has a color identical to a color of the coloring agent. |
