Patent ID: 8870082

Claim:
A temperature-sensitive label comprising: a container provided with means for an application on an item to be monitored, wherein: said container houses at least one temperature-sensitive system made up of a filiform shape memory member restrained to a filiform bias member, and said filiform bias member is provided with an engaging seat, formed by bending the filiform bias member back at one of the ends of the filiform bias member, in which one of the ends of said filiform shape memory member is introduced in such a way that in case of exposure to a temperature lower than a preset critical threshold temperature (T c ), the filiform shape memory member performs a phase transition, from austenitic phase to martensitic phase, which causes irreversible disengagement of the filiform shape memory member from the restraint formed by said engaging seat, the temperature-sensitive label further comprising displaying configured to display said irreversible disengagement.