COLOR CHANGING DEVICE FOR MONITORING SHELF-LIFE OF PERISHABLE PRODUCTS
专利汇可以提供COLOR CHANGING DEVICE FOR MONITORING SHELF-LIFE OF PERISHABLE PRODUCTS专利检索，专利查询，专利分析的服务。并且A color changing device for monitoring the time-temperature storage history, i.e. shelf-life, of perishable products. The device is constructed of an activator tape, containing an activator composition matrix, an indicating tape, containing an indicating composition matrix and an optional barrier matrix between the activator tape and the indicating tape. At least one matrix is a pressure sensitive adhesive. The activating composition, e.g. an organic acid such as citric acid, diffuses through the barrier and/or indicating matrix to continuously contact the indicating composition, e.g. an acid-based dye indicator such as 2,2',4,4',4'', -pentamethoxy triphenylmethanol, to produce a visually observable color change at the temperature being monitored. The color intensifies with time and temperature, as more activator composition diffuses into the indicating matrix. The matrices are water-impermeable and the device preferably possesses activation energy and rate constant values for the color change which are substantially the same as those for product decay. This allows accurate and continuously observable monitoring of the available shelf-life of the perishable product to which the device is adhered to.，下面是COLOR CHANGING DEVICE FOR MONITORING SHELF-LIFE OF PERISHABLE PRODUCTS专利的具体信息内容。
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