Time-temperature indicator devices
The invention claims priority of British Patent Application No. 9801138.0, filed Jan. 20, 1998, titled "Time-Temperature Indicator Devices," by Michael J. Simons. A time-temperature indicator device comprises a polymeric layer having a first and second surface and a dye composition adhered...
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| Sprache: | eng |
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| Zusammenfassung: | The invention claims priority of British Patent Application No. 9801138.0, filed Jan. 20, 1998, titled "Time-Temperature Indicator Devices," by Michael J. Simons.
A time-temperature indicator device comprises a polymeric layer having a first and second surface and a dye composition adhered to said first surface comprising a dye which diffuses into the polymeric layer as a result of a cumulative time-temperature exposure wherein the polymeric layer is formed from a natural or synthetic rubber polymer or copolymer. The device may be attached to a product for monitoring cumulative time-temperature exposure. |
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