Time-temperature indicator and monitoring method for monitoring quality state of thermally sensitive article
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United States of America Patent
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Apr 11, 2017
Grant Date -
May 1, 2014
app pub date -
Jun 26, 2012
filing date -
Jun 29, 2011
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Abstract
The present invention relates to a time-temperature indicator for monitoring the quality state of a thermally sensitive article and a monitoring method. The present invention also relates to a preparation method of the time-temperature indicator and a thermally sensitive article using the time-temperature indicator. The time-temperature indicator according to the present invention comprises two laminated layers which are physically separated, i.e. a function indication layer and an adsorption function layer. The two laminated layers are stored and transported separately, and combined together in use. Therefore, the time-temperature indicator of the present invention can be stored and transported at room temperature, which reduces the usage costs of the time-temperature indicator.
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