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|1. (WO2018014362) OPTICAL ANTI-COUNTERFEITING MARK BASED ON FIBROIN AND PREPARATION METHOD THEREFOR|
|Applicants:||NANTONG TEXTILE AND SILK INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
|Title:||OPTICAL ANTI-COUNTERFEITING MARK BASED ON FIBROIN AND PREPARATION METHOD THEREFOR|
Disclosed is an optical anti-counterfeiting mark based on fibroin, comprising a fibroin film layer and a gold film layer located on the fibroin film layer, wherein the area of the gold film layer is smaller than that of the fibroin film layer. A method for preparing the optical anti-counterfeiting mark pattern based on fibroin, comprising the following steps: a fibroin water solution is prepared; a base material is coated with the fibroin water solution to obtain a fibroin film; and a layer of a gold film is sputtered onto the fibroin film by using a mask plate to obtain the optical anti-counterfeiting mark pattern based on fibroin. By sputtering one layer of a thin gold (Au) film on the surface of the fibroin film, the anti-counterfeiting mark pattern appears under high humidity, the preparation is simple, and the manufacturing cost of the optical anti-counterfeiting mark can be markedly reduced.