Additionally, labeling can change colour to reveal that it is at the required temperature for best or most enjoyable consumption, whether food or drink.

ADDITIONAL INFORMATION

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.