| 摘要 |
PROBLEM TO BE SOLVED: To provide a displayer capable of displaying heat history surely and irreversibly with a simple structure relative to the heat history over a prescribed temperature, and a laminate having a thermometric agent layer and an information recording film layer. SOLUTION: In this temperature indicating display device, an irreversible change is generated when exposed at a prescribed temperature, and thereby the temperature history can be displayed. The device has the information recording film layer for recording information, an information record holding layer for holding the information, and the thermometric agent layer comprising a material whose state is changed depending on the temperature. The device is characterized by changing the display state of the information recorded in the information recording film layer by the change of the material state in the thermometric agent layer when exposed to the prescribed temperature. In addition to the device, its laminate, a vessel for installing it therein, and a labeled label capable of temperature indication display are also provided.
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