| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermoplastic synthetic resin laminated sheet having the same surface hue, enabling discrimination of resin plates different in characteristics mutually and not causing incongruous feeling on its end surfaces. SOLUTION: A laminated sheet is constituted by integrally laminating outer layers 2 and 2 on both surfaces of an inner layer and the content of a pigment contained in the inner layer 1 is set smaller or larger than the content of the pigment contained in outer layers 2 and 2 to form the thermoplastic synthetic resin laminated sheet A. When the laminated sheet is viewed from end surfaces thereof, the presence of the inner layer is confirmed by the difference in the contents of the pigments. This laminated sheet can be discriminated from a resin plate having the same hue and having no difference between inner and outer layers. Since the discrimination of the inner and outer layers is based on the difference between the contents of pigments, an incongruous feeling is not caused in hue changes of end surfaces. COPYRIGHT: (C)2004,JPO
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