IC TAG AND METHOD FOR MANUFACTURING IC TAG

摘要

PROBLEM TO BE SOLVED: To provide an IC tag enabling to check under which temperature and humidity environment the IC tag has been used.

SOLUTION: This IC tag 1 is provided with an inlet layer 3, and a double-sided tape 5 is formed on one face of the inlet layer 3. An upper paper 7 is formed on the other face of the inlet layer 3. The upper payer 7 has temperature discoloration inks 17a and 17b as temperature discoloration parts and a humidity history display part 41 as a humidity discoloration part formed thereon. The temperature discoloration inks 17a and 17b are inks which irreversibly becomes discolored when the IC memory and/or antennas 23a and 23b in the inlet layer 3 reach temperature beyond an operable temperature range. The humidity history display part 41 is a section which irreversibly becomes discolored when the IC memory and/or the antenna reaches humidity beyond an operable humidity range.

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