Deformation amount display body and deformation using the same or detection method of the deformation amount

摘要

PPROBLEM TO BE SOLVED: To provide an indicator excellent in constitutional simplicity and indicating both the temperature of an article to be indicated and elapsed time (temperature time history) at that temperature. PSOLUTION: This distribution history label includes a polymer composition composed of a polymer and a dye, wherein the polymer composition has the dye fixed in a specific molecular dispersion state in the polymer, and when kept at a temperature not lower than a specific temperature for a predetermined time, irreversibly changes its color to a hue different from the initial hue thereof. PCOPYRIGHT: (C)2010,JPO&INPIT