3D random magnetic pattern digital anti- counterfeiting label and preparation method thereof

Abstract

A 3D random magnetic pattern digital anti-counterfeiting label and preparation method thereof are provided, which relate to the technical field of anti-counterfeiting labels. The 3D random magnetic pattern digital anti-counterfeiting label includes: a 3D magnetic ink anti-counterfeiting layer, including 3D magnetic photochromic nanoparticles, the 3D magnetic photochromic nanoparticles include: a first nano zinc oxide film layer, a first nano titanium dioxide film layer, a magnetic nano film layer, a second nano titanium dioxide film layer and a second nano zinc oxide film layer from bottom to top. The 3D random magnetic pattern digital anti-counterfeiting label shows bright stripes under different illumination angles, the 3D random magnetic pattern digital anti-counterfeiting label is rotated to observe a dynamic optically variable effect of magnetic ink from different angles to thereby distinguish the authenticity, and the bright stripes show regular circular particle patterns, which has high recognition and is easy to recognize.

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