Control device of the breaking of the cold chain (or fresh) after signature of a quick freezing / freezing (or refrigeration)

摘要

Method of detecting interruption of deep freezing, freezing or refrigeration, employs an indicator with a substrate that comprises water-resistant paper, PVC, PET or extruded PP. The substrate of the indicator resists temperature changes and moisture. An Independent claim is included for the equipment for carrying out the method of the claim, that includes the indicator that comprises a patch (PA) that changes color at a temperature of deep freezing, freezing or refrigeration, and a further patch (PB) that is inert at this temperature.