| CPC C08J 7/0427 (2020.01) [C09J 7/255 (2018.01); C08J 2367/02 (2013.01); C08J 2467/06 (2013.01); C09J 2301/122 (2020.08); C09J 2421/00 (2013.01); C09J 2433/00 (2013.01); C09J 2467/006 (2013.01)] | 20 Claims |

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1. An identifiable substrate, characterized in that the identifiable substrate comprises a base film and a marking layer, the base film comprising an identifying surface, the marking layer is an ink coating, wherein the marking layer is laminated with the identifying surface of the base film;
a surface tension of the identifying surface is D1; a surface tension of the marking layer is D2; and a thickness of the marking layer H satisfies 0.8 μm≤H≤(D1/D2)×5 μm.
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