Point light source reading laser encryption holographic anti-counterfeiting gasket and preparation method thereof

Abstract

The invention belongs to the technical field of anti-counterfeiting, and particularly relates to a point light source reading laser encryption holographic anti-counterfeiting gasket and a preparationmethod thereof. The laser encryption holographic anti-counterfeiting gasket includes a PET layer, an imaging layer, a laser encryption information layer, an aluminized layer, a printing layer, an upper adhesive layer, a foaming layer, a lower adhesive layer and a lower PET layer which are sequentially connected from top to bottom. The laser encryption information layer hides digital coded information. Two parameters of grating space frequency and a grating angle in a grating lattice are used to produce a laser encryption information layer molded plate, laser encryption information is copied onthe PET imaging layer to form a laser encryption information layer, when consumers use handheld point light source equipment to irradiate the front of the holographic anti-counterfeiting gasket, thehidden information is presented for determining the authenticity of a product, and the point light source reading laser encryption holographic anti-counterfeiting gasket is a novel holographic anti-counterfeiting gasket that is difficult to imitate but easy to identify.

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 encryption holographic anti-counterfeiting gasket and a preparation method thereof. Background technique [0002] The traditional anti-counterfeiting gasket is mainly used for sealing to prevent the product from getting wet and to store the product more effectively for a long time; in addition, it is to keep the product in good condition during transportation, prevent the bottle body from scratching the bottle cap, and prevent the bottle from being damaged. Water leaks out. However, the competition in the sales market of alcoholic beverages, beverages, and health care products is becoming increasingly fierce. The products of many manufacturers, especially brand-name products, are facing a huge risk of counterfeiting, and huge costs have been invested in anti-counterfeiting and traceability. [0003] Laser embossed hologr...

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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