To provide a raw sheet for a lens sheet which realizes cracking resistance while ensuring self-supporting properties, a lens sheet using the raw sheet, and a project screen provided with the lens sheet.
In the raw sheet constituting the lens sheet having the UV curable resin layer laminated on a UV resin layer as a base sheet, and consisting of a ductile material, deflection breakage in bending of the ductile material is at least 0.08 and Izot impact value is at least 5 KJ/m2. In addition, in the raw sheet consisting of a brittle material, when shearing force of the UV curable resin is F (MPa) and thickness of the raw sheet is h (m) and bending elasticity of the brittle material is E (MPa) and deflection in bending is ω(non-dimensional quantity), a material provided with physical properties in which a relation F/hEω < 1.5 is held is provided.
KIMURA MAKOTO
HASHIMOTO TATSUJI
DOI YASUHIRO
| JPH01128059A | 1989-05-19 | |||
| JPH09302177A | 1997-11-25 | |||
| JPH08165315A | 1996-06-25 | |||
| JP2000066307A | 2000-03-03 | |||
| JP2000071257A | 2000-03-07 |
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