Anti-counterfeiting method integrating dark lines, latent images and unlocking through embossing

A dark pattern and latent image technology, applied in the field of anti-counterfeiting, can solve the problems of no 3D three-dimensional sense, can not be very fine, can not achieve unlocking and anti-counterfeiting, etc., and achieve strong three-dimensional sense, good anti-counterfeiting effect, and good anti-counterfeiting effect. Effect

Pending Publication Date: 2019-05-03
DONGGUAN YUNCHENG PLATE MAKING
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Problems solved by technology

Anti-counterfeiting patterns mainly include three methods: dark pattern, latent image, and unlocking. Most of the existing technologies use gravure printing to make anti-counterfeiting patterns. It has a great impact on the engraving accuracy. This kind of products cannot be very fine. The most fine level of printed matter is generally 100 lines/cm; (2) The printed pattern is 2D flat and has no 3D stereoscopic effect. Latent image (that is, the 3D shape of dots reflects light at different angles to hide text or patterns in the shading, and the hidden patterns can only be seen through a certain angle) has poor anti-counterfeiting effect; (3) gravure printing production Unlocking anti-counterfeiting patterns (that is, using

Method used

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  • Anti-counterfeiting method integrating dark lines, latent images and unlocking through embossing
  • Anti-counterfeiting method integrating dark lines, latent images and unlocking through embossing
  • Anti-counterfeiting method integrating dark lines, latent images and unlocking through embossing

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Example Embodiment

[0031] The present invention will be further described in conjunction with the following examples.

[0032] The anti-counterfeiting method for embossing dark lines, latent images, and unlocking / unlocking integration of this embodiment includes the following steps:

[0033] It includes the following steps:

[0034] Step 1. Use image processing software to first make a uniformly arranged grid, and the shape of all the dots 1 in the grid is a three-dimensional hemisphere (such as figure 1 Shown).

[0035] Step 2: Make a certain distance offset from the hemispherical dot 1 corresponding to the pattern to be hidden in the grid, the offset is 0.02-0.04mm (the dot 1 where the offset occurs is like figure 2 As shown), after the offset is done, use a laser direct engraving machine to engrave on the copper roller, so as to obtain the hidden pattern 3 displayed after matching with the unlocking film 2 (such as image 3 Shown);

[0036] Step 3. Using image processing software, select part of the h...

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Abstract

The invention relates to the anti-counterfeiting technical field, in particular to an anti-counterfeiting method integrating dark lines, latent images and unlocking through embossing. The method comprises the steps of manufacturing grids composed of hemispherical-shaped uniformly arranged dots, carving unlocking hidden patterns, carving the latent images, carving the dark lines, carrying out electrolytic polishing, plating with chromium and embossing. Compared with the prior art, the method has the advantages that the three anti-counterfeiting technologies of the dark lines, the latent imagesand unlocking are combined into a whole, a laser direct engraving machine is adopted for carving, embossing is carried out on a printing object through an embossing process, the engraved dots are in athree-dimensional hemispherical shape, the stereoscopic impression of the manufactured anti-counterfeiting patterns is stronger, the fineness of carved net line scan reach 200 lines/centimeter, the anti-counterfeit effect is better, in addition, printing ink is not used in the whole manufacturing process, and the method is more environment-friendly.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting technology, in particular to an anti-counterfeiting method integrating embossing to produce dark lines, latent images and unlocking. Background technique [0002] At present, the demand for anti-counterfeiting of various products in the market is becoming more and more extensive, especially the anti-counterfeiting technology requirements for cigarette pack products are getting higher and higher. Anti-counterfeiting patterns mainly include three methods: dark pattern, latent image, and unlocking. Most of the existing technologies use gravure printing to make anti-counterfeiting patterns. It has a great impact on the engraving accuracy. This kind of products cannot be very fine. The most fine level of printed matter is generally 100 lines / cm; (2) The printed pattern is 2D flat and has no 3D stereoscopic effect. Latent image (that is, the 3D shape of dots reflects light at different angles to hide...

Claims

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Application Information

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IPC IPC(8): B41M3/14B41C1/05
Inventor 上官彦军任文师
Owner DONGGUAN YUNCHENG PLATE MAKING
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