HEAT HISTORY DISPLAY LABEL, SELF-ADHESIVE LABEL, AND LABELED ARTICLE

摘要

PROBLEM TO BE SOLVED: To prevent a label peeled off with the use of heat from being used wrongfully. SOLUTION: A heat history display label 10 comprises: a base material 111; a first ink 114a that is supported by the base material 111 and changes colors irreversibly by being heated to a first temperature or higher; and a second ink 114b that is supported by the base material 111 and changes colors by being cooled to a second temperature or lower. COPYRIGHT: (C)2010,JPO&INPIT