Printed TTI indicators
AssigneeAvantone Oy
InventorsPekka Koivukunnas, Eero Hurme
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Abstract
The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicators. The printed TTI indicator is selectively activated at the time of packaging of a perishable product or alternatively at the time of opening of the package of a perishable product.
Claims27
A TTI indicator, characterized in that the TTI indicator comprises, printed on a substrate layer, an optional protective layer on the substrate, a diffusion layer, agent A and agent B on the substrate or on the protective layer or on the diffusion layer, an optional outer protective layer, and an optional outer substrate layer.
A method for the manufacture of a TTI indicator, characterized in that at least one stripe or dot or a geometrical figure comprising agent A and at least one stripe or dot or a geometrical figure comprising agent B, or at least one stripe or dot or a geometrical figure comprising a blend of agent A and agent B are printed on a substrate, which is optionally coated with a protective layer and/or with a diffusion layer, and on the agents A and B a diffusion layer is printed in the case it was not earlier printed, then an optional outer protective layer is printed and then an optional outer surface layer is attached.
Use of a TTI indicator according to claim 1 or manufactured according to any one of claims 12-26 for monitoring the exposure of a perishable product to a critical condition of such time and temperature which will result in spoilage or unacceptable degradation of the quality of the perishable product.
Dependencies are inferred from the claim text.