A kind of laser holographic anti-counterfeiting film and preparation method thereof

Abstract

The invention belongs to the technical field of laser anti-counterfeiting, and provides a laser holographic anti-counterfeiting film and a preparation method thereof. Firstly, a binding agent is prepared, the prepared binding agent and ink are mixed, the mixed material coats the surface of a base film, an anti-counterfeiting information coating material is added to form an ink layer, and finally, a polyurethane membrane coats the ink layer to obtain the laser holographic anti-counterfeiting film. Compared with a conventional method, the method provided by the invention uses the polyurethane membrane as a laser holographic anti-counterfeiting film, basic characteristics and excellent performance of a common aluminum coated laser holographic anti-counterfeiting film are retained, and meanwhile the binding agent reinforces interface bonding between the base film and the polyurethane membrane, improvement of film forming strength and toughness is facilitated, temperature resistance and weathering resistance of the film are improved, the reflectivity and the refractive index of the polyurethane membrane are effectively improved, anti-counterfeiting performance is reinforced, the process is simple, the costs are low and the laser holographic anti-counterfeiting film is easy to produce in a large scale.

Description

technical field

[0001] The invention belongs to the technical field of laser anti-counterfeiting and provides a laser holographic anti-counterfeiting film and a preparation method thereof. Background technique

[0002] my country's anti-counterfeiting technology is gradually formed and developed under the conditions of developing a socialist market economy. Because the current legal system is not perfect and the market is not standardized, some criminals at home and abroad specialize in counterfeiting famous or best-selling products in order to seek huge profits. Fake goods and false ones have formed a certain scale of counterfeit goods market, as well as various counterfeit banknotes, certificates, etc., which have become a dirty current hindering the healthy development of my country's economy. The development of anti-counterfeiting technology and the formation of anti-counterfeiting industry are the needs of the development of my country's socialist market economy. [000...