PROCESS FOR MONITORING THE HISTORY OF TEMPERATURE VERSUS TIME OF DEEP-FROZEN PRODUCT, INDICATOR FOR APPLYING SAID PROCESS AND UTILIZATION OF SAID PROCESS

摘要

The indicator is intended to monitor historical temperature to time deep frozen prods. For this purpose, the temperature of the function using the liquid fiber element formed body (1,18) of the diffusion velocity of pendency effect. Working as main body, perhaps paper slip band (1) package moisture-proof piece (5) or filter is arranged to prismatic in cardboard pill (18) or cylindrical bore is formed as synthetic material) it is used. One of extremeties main bodys, which are had leisure, allows sensing moisture. Activate the indicator by keeping it monitored with the product of water or ice reserves. The water retention is included in any one moisture from product itself, or is provided and be placed in packaging in a lowland by reserve feed water source. Cellulose main body (1) has the substance of water-soluble aquation, preferably sodium chloride and/or citric acid. Arrival is clearly indicated in indicator by/indicator (4,17). It is arranged before indicator contact reserve feed water source, the latter freezes, and the main body (1) of contact area (1a) is that in one embodiment, the substance of impregnation with adhesives is preferably sugared. In order to avoid premature color changing indicator (4) is by diffusion process, when indicator is not activated, buffer area is provided.