| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature display label of weather-proof for clear color development. SOLUTION: A wax 2 which is melted at a pre-set temperature is placed on a color surface 7 side of a base material 1 which is a sheet with one surface colored so as to cover the base material 1. On the front surface side of the wax 2, a layer of masking material 3 comprising a material which changes from opaque to transparent when the wax 2 melts and infiltrates is formed. A both-sided adhesive tape 4 is pasted on the rear surface of the base material 1, and the entire front surface side is covered with a transparent film 5.
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