Packaging foil comprising a luminescent compound
AssigneeSensor Spot B.V.
InventorsAntonius Johannes VAANHOLD, Marc Jaap STAAL, Sacco TE LINTEL HEKKERT
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Abstract
The invention relates to a multi-layered packaging foil comprising a layer L-1 having an oxygen gas transmission rate OGTR-1; a luminescent compound having the property that its luminescence is capable of being quenched by oxygen; and a layer L-2 adhering to L-1 and to the luminescent compound. The layer L-2 has an oxygen gas transmission rate OGTR-2 that is at least 20 times higher than OGTR-1, and the luminescent compound is present between L-1 and L-2. The invention further relates to a packaging comprising a packaging foil of the invention and to a method for measuring the oxygen content in a packaging.
Claims15
Multi-layered packaging foil comprising
- a layer L-1 having an oxygen gas transmission rate OGTR-1;
- a luminescent compound having the property that its luminescence is capable of being quenched by oxygen;
- a layer L-2 adhering to L-1 and to the luminescent compound, the layer L-2 having an oxygen gas transmission rate OGTR-2 that is at least 20 times higher than OGTR-1;
- wherein the luminescent compound is present between L-1 and L-2.
Dependencies are inferred from the claim text.