| 摘要 |
The packing material has a laminated structure of multiple layers, which has a substrate layer (1) and an indicator layer (2) on the inner side laminated structure, which has a sectional indicator substance (4) with a reversible indicator. The reversible indicator visibly changes its feature under photo activation. A photo blocker layer (3) is provided. The reversible indicator is a time temperature indicator, a glycemic index indicator out-arranged by gas, particularly oxygen or carbon dioxide or a service indicator reversibly out-arranged by a substance, particularly ethylene. Independent claims are included for the following: (1) a packing product unit with a packing; (2) a method for marking of a packing, particularly a packing product unit; and (3) a method for examination of a packing product unit for the quality inspection of the product. |
