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Packaging material having a coloring element that partially erases color at a predetermined temperature to expose the marking, and a method for producing the same
Packaging material having a coloring element that partially erases color at a predetermined temperature to expose the marking, and a method for producing the same
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机译:具有在预定温度下部分擦除颜色以使标记暴露的着色元件的包装材料及其制造方法
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摘要
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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