CHILLED PACKAGING
Smart or intelligent packaging can be created by the addition of temperature activated labels or thermochromic inks printed directly onto packaging, as a single temperature point, or in "traffic light" form.
Additionally, labeling can change colour to reveal that it is at the required temperature for best or most enjoyable consumption, whether food or drink.
Frozen food packaging can incorporate thermochromic inks or be moulded with thermochromic masterbatch, to signal when a product is correctly below a temperature point, or a change in colour can show that the product is now too warm. For instance an ice cream label, carton, or the plastic lid could change colour.
Ben and Jerry's interactive ice cream label
Mountains change from white to blue.
when bottle is at 4°C or below, show it is ready to drink.