Point light source reading laser encryption plastic film anticounterfeiting mark and preparation method thereof

Abstract

The invention belongs to the technical field of anticounterfeiting, and particularly relates to a point light source reading laser encryption plastic film anticounterfeiting mark and a preparation method thereof. The laser encryption plastic film anticounterfeiting mark comprises a PET layer, an imaging layer, a laser encryption information layer, a copying layer, a printing layer, a gravure layer, a pressure-sensitive adhesive layer and a silicone oil paper layer which are sequentially connected from top to bottom, and digital coding information is hidden in the laser encryption information layer. According to the invention, two parameters of grating space frequency and grating angle in grating lattices are used for manufacturing a laser encryption information layer mould pressing plate;laser encryption information is copied on the PET imaging layer to form the laser encryption information layer, hidden information can be presented only by uncovering the anticounterfeiting mark and irradiating the back surface of the mark by using handheld point light source equipment by a consumer, and the consumer judges authenticity of the mark by identifying the hidden information, so that anticounterfeiting mark has exclusiveness.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting, and in particular relates to a point light source reading laser encrypted plastic film anti-counterfeiting mark and a preparation method thereof. Background technique [0002] At present, the electronic code anti-counterfeiting labels used in the anti-counterfeiting market are basically the laser electronic code anti-counterfeiting labels and paper electronic code anti-counterfeiting labels that have been popular for many years. [0003] Laser embossed holographic anti-counterfeiting technology was introduced into my country in the late 1980s and early 1990s. Especially from 1990 to 1994, hundreds of production lines were introduced all over the country, accounting for more than half of the world's manufacturers at that time. At the beginning of the introduction, this anti-counterfeiting technology did play a certain role in anti-counterfeiting, but as time went by, the laser holograp...

AI Technical Summary

Problems solved by technology

At the beginning of the introduction, this anti-counterfeiting technology did play a certain role in anti-counterfeiting, but as time went by, laser holographic image production technology spread rapidly, and now it has been broken by counterfeiters from all aspects, almost completely losing the ability of anti-counterfeiting, prompting People have to start looking to improve existing technology

Therefore, optical image encoding and encryption technologies such as laser reading, optical miniaturization, low-frequency lithography, random interference fringes, Moiré fringes, etc. are used. All of the above technologies require professional testing equipment to identify true and false, making many consumers unable to use the above anti-counterfeiting Features to identify true and false, not conducive to market promotion

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