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Assignee3M Innovative Properties Company
InventorsYing Lin, Hassan Sahouani, Ying Shi, Kenneth M. White
Estimating the term…
A thermal indicator, a thermal indicating composition (1), as well as two kinds of thermal indicating structures (11) are disclosed. The thermal indicator comprises an organic solid material (2) having a melting point higher than ambient temperature and a dye (3) which contacts the organic solid material (2) and is capable of being dissolved in the organic solid material (2) when the thermal indicator is heated to the melting point of the organic solid material (2). The thermal indicator, the thermal indicating composition (1), as well as these two kinds of thermal indicating structures (1) have simple structures and can be manufactured by a simple process. Furthermore, the existence of the dye (3) in its crystalline state offers significant resistance to UV radiation in outdoor applications.
A thermal indicator comprising an organic solid material having a melting point higher than ambient temperature and a dye which contacts the organic solid material, wherein the dye is in a crystalline state and wherein the dye dissolves in the organic solid material to a molecular state to show the true color of the dye's molecular state when the thermal indicator is heated to the melting point of the organic solid material.
9-19. (canceled)
22-29. (canceled)
A thermal indicating structure comprising a transparent substrate, an adhesive layer, and a stripping liner laminated in turn, wherein one side of the transparent substrate facing to the adhesive layer has one or more depression portions which are filled with the thermal indicating composition comprising an organic solid material having a melting point higher than ambient temperature and a dye which contacts the organic solid material, wherein the dye is in a crystalline state and wherein the dye dissolves in the organic solid material to a molecular state to show the true color of the dye's molecular state when the thermal indicator is heated to the melting point of the organic solid material.
31-36. (canceled)
A thermal indicating structure comprising a transparent substrate, an organic solid layer having a melting point higher than ambient temperature, a dye layer, an isolation polymer layer, an adhesive layer, and a stripping liner laminated in turn, wherein the dye layer comprises a dye disposed in a crystalline state and wherein the dye dissolves into the organic solid layer to a molecular state to show the true color of the dye's molecular state when the thermal indicating structure is heated to the melting point of the organic solid layer.
45-49. (canceled)
Dependencies are inferred from the claim text.