The invention is a smart label that irreversibly indicates cumulative time of heating above the pre-defined temperature. The invented time-temperature indicator (TTI) is thin, flexible and self-adhesive.
![](https://jro-ktt.si/wp-content/uploads/2018/07/KI.png)
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The invention is a smart label that irreversibly indicates cumulative time of heating above the pre-defined temperature. The invented time-temperature indicator (TTI) is thin, flexible and self-adhesive.