Temperature management member under reduced-pressure atmosphere and temperature management method under reduced-pressure atmosphere

摘要

A temperature management member under a reduced-pressure atmosphere, wherein the difference in the discoloration temperature of a temperature-sensitive discoloration layer between under an atmospheric pressure atmosphere and under a reduced-pressure atmosphere can be minimized. A temperature management member under a reduced-pressure atmosphere includes a temperature-sensitive discoloration layer which contains granular or powdery hot-melt matter that melts at a melting temperature corresponding to a heating temperature to be detected under a reduced-pressure atmosphere and which is discolored in response to the hot melting thereof, and a difference in the melting temperature of the hot-melt matter within the temperature-sensitive discoloration layer between under an atmospheric pressure atmosphere and under the reduced-pressure atmosphere is 5° C. at most.

主权项

1. A temperature management member under a reduced-pressure atmosphere of at most 1000 Pa comprising:
a temperature-sensitive discoloration layer which contains a granular or powdery hot-melt matter that melts at a melting temperature corresponding to a heating temperature to be detected under the reduced-pressure atmosphere and which discolors in response to the hot melting of the hot-melt matter, wherein a difference in the melting temperature of the hot-melt matter within the temperature-sensitive discoloration layer between any two pressures selected from the group consisting of under an atmospheric pressure atmosphere, under a reduced-pressure atmosphere of 1000 Pa, and under a reduced-pressure atmosphere of 0.1 Pa is 5° C. at most, and the hot-melt matter melts at substantially the same temperature under any reduced-pressure atmosphere in the range of 0.1 Pa to 1000 Pa.