Anti-counterfeiting transfer printing technology

Abstract

The invention relates to an anti-counterfeiting transfer printing technology which comprises the following steps: preparing a laser plate; coating a layer of mold release agent or imaging paint on a PET base film; carrying out vacuum pumping on the PET base film and an aluminum material device in a vacuum plating evaporator; then heating the aluminum material and depositing gaseous aluminum particles on the surface of the moving PET base film and/or the surface of the mold release agent or the imaging paint; stamping an embossing pattern on the laser plate on a mold release agent layer or an imaging paint layer and/or an aluminum layer so as to make a holographic transfer film for transfer; bonding the holographic transfer film and backing paper together; separating the PET base film from the paper, wherein the stripped PET base film can be repeatedly used for a coated base film; and coating a layer of aqueous varnish on the surface of the transferred paint layer and/or the aluminum layer. The technology can combine an anti-counterfeiting printing technology with a transfer printing technology, and an aluminum plating layer transferred on the paper can be made to be thin, thereby saving the aluminum material; in addition, the base film used in transfer printing can be repeatedly utilized and does not pollute the environment.

Description

technical field [0001] The invention relates to a printing process technology, in particular to an anti-counterfeiting transfer printing process. Background technique [0002] In the traditional printing process, the ink is directly dried on the surface of the self-made substrate. Due to the flatness of the paper and the absorbency of the paper surface, it is not conducive to the leveling of the ink. If the paper's ability to absorb ink is too strong, it will cause print defects such as powdering of the imprint, low gloss, print-through, reduced ink layer density, and change in hue. Therefore, for printed matters with high requirements for color and tone reproducibility, one method is to use plastic film composite paper such as OPP or PET for printing. The disadvantage of this process is that the plastic film is a non-degradable material, which will pollute the environment and is not conducive to environmental protection. Another way is to use UV (ultraviolet light) to irr...

AI Technical Summary

Problems solved by technology

[0008] Although this process adopts an indirect printing method, that is, thermal transfer printing, the single-handed production equipment, materials, environmental protection, efficiency and cost have great limitations:

[0009] 1. Limited to the use of sublimation inks, the color saturation of printed products is very low;

[0010] 2. The temperature change has a great influence on the peeling effect of the layer;

[0011]3. Use a special heat transfer machine to complete the transfer of the color film. The heat transfer machine has slow production speed, low efficiency and high cost

[0012]4. Production requires high temperature of 200~300℃, which consumes a lot of energy and is dangerous to operators

[0014] 1. For the common release agent material used in the transfer film, the aluminum-sprayed layer is only in contact with the release agent, which can effectively peel off the aluminum-sprayed layer, but there is a relatively thick ink layer between the two, which cannot meet the printing requirements. Effective stripping of ink

[0015]2. The ordinary water-based transfer glue used in the transfer film can peel the aluminum sprayed layer from the release agent material, but because there are still some Thick ink layer, the side can not meet the effective transfer of printing ink layer and aluminum spray layer from the release layer at the same time