| 摘要 |
<p>An indicating device for displaying the temperature history of an object is disclosed. The indicating device includes a reservoir of indicating material secured with respect to the object, where the indicating material is solid below a predetermined temperature and liquid at or above this temperature and a wicking member arranged in contact with the reservoir so that the indicating material migrates from the reservoir when in liquid form through the wicking member thereby altering the visual appearance of an indicating portion of the wicking member. Furthermore, the indicating device includes a barrier layer substantially overlaying and in contact with the wicking member, wherein the barrier layer includes a viewing aperture to view the indicating portion of the wicking member.</p> |
