Device for checking whether the cold chain has been broken

摘要

The invention relates to a device making it possible to check whether the negative temperature of a product or an enclosure has undergone a rise, and if it has, by how much. It consists of a plastic sheet 1 with one or more chambers 2 containing one blue pellet 3 and one yellow pellet 4, for example consisting of a mixture, alcohol and dye, and a plastic sheet 5 welded onto the previous sheet 1 in order to close the chambers. The excess on either side of the chambers 2 constitutes margins 6 intended for text or fastening. When the temperature rises, the pellets 3 and 4 melt, as a function of the adjustment of their mixture, in order to given an irreversible green coloration. The sheet 1 and the sheet 2 are respectively transparent and opaque white, or vice versa. The device according to the invention is in particular intended for checking the continuity of the cold chain. IMAGE