Abstract: A device for monitoring the expiration of goods includes a substrate and an unreacted composition affixed thereto which is intrinsically reactive to one or both of its thermal environment and the length of time following activation. The reactivity results in a color formation of the composition with the color formation being a single color upon reaction to one of said thermal environment or length of time and multiple colors upon reaction to both. The device may be a label affixed to a container containing the goods to be monitored or may be printed directly on a container.

Abstract: A device and method for monitoring the expiration of goods includes a substrate, a coating of polydiacetylene, said coating having properties of (1) changing from a first color irreversibly to a second color immediately upon being subjected to a specified temperature and (2), upon activation upon contact by an activating agent, changing from said first color to said second color at a temperature lower than said specified temperature after a time delay of at least one hour and an activating agent on a portion but not all of said coating.

Abstract: This article is a self-wound, water dissolvable tape. The tape is substantially removable with water, and may be wound onto a spool without an interleaving layer of release coated material. The tape comprises a water dissolvable, continuous phase substrate having a first surface and a second surface, a water dissovable, continuous phase adhesive layer on the first surface of the substrate, and a water dissolvable, continuous phase abherent layer on the second surface of the substrate.

Abstract: A device for monitoring the expiration of goods includes a substrate and an unreacted composition affixed thereto which is intrinsically reactive to one or both of its thermal environment and the length of time following activation. The reactivity results in a color formation of the composition with the color formation being a single color upon reaction to one of said thermal environment or length of time and multiple colors upon reaction to both. The device may be a label affixed to a container containing the goods to be monitored or may be printed directly on a container.