Invention Grant
US08722575B2 Packaging material with a coloured element which at a predetermined temperature discolours partially, revealing a marking, and method for producing this material 有权
具有预定温度的着色元件的包装材料部分地变色,露出标记,以及制造该材料的方法

Packaging material with a coloured element which at a predetermined temperature discolours partially, revealing a marking, and method for producing this material
Abstract:
It is disclosed a packaging material (1) for a pharmaceutical product. The packaging material comprises a colored element (2) which at a predetermined temperature, below which the pharmaceutical product must be kept, discolors partially, revealing a marking. The element is formed by a first portion forming the marking (2′) printed with conventional ink, and a second portion (2″) printed with thermochromic ink. The thermochromic ink is colored below the predetermined temperature and becomes colorless when this predetermined temperature is reached or exceeded. The two portions are arranged so that the first portion is invisible below the predetermined temperature, but becomes visible when this temperature is reached or exceeded.
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