Laser encryption anti-counterfeiting adhesive tape and preparation method thereof

Abstract

The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a laser encryption anti-counterfeiting adhesive tape and a preparation method thereof. The laser encryption anti-counterfeiting adhesive tape comprises a release silicone oil layer, a PET base film layer, a composite coating, a laser encryption information layer, a transfer coating, a printing layer and an adhesive 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 parametersof grating space frequency and grating angle in grating lattices are used; a laser encryption information layer mould pressing plate is manufactured, laser encryption information is copied on the composite coating to form the laser encryption information layer, hidden information can be presented when point light source equipment is used for irradiating the reverse side of the adhesive tape, and consumers can judge the authenticity of the adhesive tape by identifying the hidden information, so that the adhesive tape has exclusiveness, and the anti-counterfeiting strength is improved.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting, and in particular relates to a laser-encrypted anti-counterfeiting adhesive tape and a preparation method thereof. Background technique [0002] 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 holographic image production technology spread rapidly, and now it has been broken by counterfeiters from all aspects, and almost completely lost the anti-counterfeiting ability. People had to start looking to improve existing technologies. Therefore, optical image encoding and encryption technologies s...

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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