(57) The present Idea has as object a label to be applied on the packages of the foods
to be deep-frozen. It is made by a grid or net fixed on a base covered by a cap, contains
a coloured liquid, filled through a hole which is then closed by a film or a plate.
The liquid contained in the "defrosting detector label", is made by a mixture composed by water, alcohol and/or salt and/or sugar
further to the coloring agent which has the feature (in compliance of the elements
mixing) of remaining liquid also at temperatures below centigrade zero. And to consolidate
only at a prefixed temperature. The label is applied to the food packages before the
deep-freezing. After the deep-freezing the label will have an icicle kept by the net
reservoir without the cap. In case of defrosting, the icicle will melt at the prefixed
temperature, revealing the defrosting.
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