Temperature and time recording mark
A technology of time recording and identification, which is applied to stamps, instruments, identification devices, etc., and can solve the problem of lack of real-time temperature monitoring for product storage
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[0018] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] The invention provides a temperature and time record mark.
[0020] refer to figure 1 , figure 1 It is the first embodiment of the present invention. In this embodiment, the temperature and time record mark includes a base layer 300, a phase change layer 100, an indication layer 200, and a display layer 400. The phase change layer 100 and the indication layer 200 are located at On the same plane, the phase change layer 100 is located at one end of the temperature and time recording mark, and the indicating layer 200 is located at the other end of the temperature and time recording mark. The indicating layer 200 has a capillary structure. When the ambient temperature is greater than or equal to the phase change critical value of the phase change layer 100, the phase change layer 100 penetrates into the indicat...
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