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Composite anti-counterfeit element

A technology of anti-counterfeiting components and components, which is applied to computer parts, record carriers and instruments used in machines, etc., to achieve high anti-counterfeiting capabilities, convenient and efficient all-round anti-counterfeiting identification.

Inactive Publication Date: 2008-12-03
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There have been many studies and applications of liquid crystal materials in the field of anti-counterfeiting technology, but the combination of optical properties endowed by liquid crystal materials and other anti-counterfeiting means to form composite anti-counterfeiting has not yet been researched and published. For example, the use of magnetic materials and infrared materials for coding anti-counterfeiting Technology has been widely used, but the composite anti-counterfeiting element that combines optical anti-counterfeiting features and coded anti-counterfeiting features has not been reported and applied yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Utilize the liquid crystal material that ROLIC company produces has the characteristic of discoloration with viewing angle and has hidden positive and negative film pattern by polarizer, forms the liquid crystal layer 1 that has two-layer structure on one side of PET base material 2 according to known method, makes liquid crystal layer Invisible image 14 (see Figure 1-3 ), printed dark Fe on the other side of the PET substrate by gravure 3 o 4 Magnetic ink 4 and overprint dark common carbon black ink 5 on the face of this PET base material, constitute coding layer 3 on this face of base material, as Figure 1-2 As shown, the encoding layers are arranged in a manner similar to commercial barcodes. For the setting of the three-layer structure of the composite element, please refer to Picture 1-1 , wherein both the liquid crystal layer 1 and the substrate 2 are transparent, and the colors of the magnetic material 4 and the carbon black 5 constituting the encoding layer...

Embodiment 2

[0052] Utilize the liquid crystal material (same as embodiment 1) that ROLIC company produces with the color-changing characteristics with the angle of observation and has a hidden positive and negative film pattern by means of a polarizer, form a liquid crystal layer 1 on one side of the BOPP transparent substrate 2 according to known methods, A latent image is formed in the liquid crystal layer. On the other side of the BOPP (biaxially oriented polypropylene) base material, print dark or light-colored infrared absorbing ink 6 and dark-colored infrared reflective material 7 to apply paired codes. The application method is to first print the infrared absorbing material 6 on the set area on the surface of the substrate, and then print the infrared reflecting material 7 on the entire area of ​​the substrate surface to make the side surface such as figure 2 Composite elements shown.

[0053] The liquid crystal layer of the composite element is observed at different angles. When...

Embodiment 3

[0055] Using the liquid crystal material ROLICURETM produced by ROLIC TM PEARL 1 On one side of a transparent PET substrate or aluminized film substrate 2, an image is formed in the liquid crystal layer, and dark Fe is printed on the other side of the substrate 3 o 4 Magnetic ink 4 and NiZn ferrite ink 5 of dark soft magnetic material are overprinted to form soft and hard magnetic characteristic coding layer 3 . The side effects of this composite element are as follows image 3 shown.

[0056] The coding arrangement of the formed composite components is the same as Figure 1-2 Similarly, when the composite anti-counterfeiting element is rotated, the image of the liquid crystal layer changes from a positive film to a negative film. The distribution of soft and hard magnetic materials can be read out under a special magnetic detection instrument. Distinguish the different characteristics of soft magnetic and hard magnetic materials to achieve the purpose of verifying the a...

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Abstract

The invention provides a compound anti-fake element; the structure at least comprises a liquid crystal material layer, a base material and an anti-fake coding layer, and the anti-fake coding layer is positioned on one side of the base material while the liquid crystal layer is positioned on the other side of the base material or the surface of the anti-fake coding layer; wherein, the liquid crystal material layer has optical security feature, the anti-fake coding layer has coding structure formed by permutation and combination in the features such as soft magnetism, hard magnetism, infrared absorption and reflection, infrared up-conversion and fluorescence, etc., and simultaneously, the coding structure can be the coding formed by the combination of one or a plurality of the features. The surface of the compound element can also be adhered with a protective layer and an adhesive layer. The compound anti-fake element of the invention compounds anti-fake features which provide mass identification by the liquid crystal material and special identification by virtue of the coding into a whole, thus having a rapid and convenient identification method with higher anti-fake capacity compared with a single anti-fake element.

Description

technical field [0001] The invention relates to an anti-counterfeit element, in particular to a composite anti-counterfeit element which has the functions of public anti-counterfeiting and professional anti-counterfeiting. Background technique [0002] In the field of anti-counterfeiting technology, a variety of anti-counterfeiting methods have been developed and adopted. They include multiple levels according to the different needs of product anti-counterfeiting, such as providing public anti-counterfeiting (also known as anti-counterfeiting First-line anti-counterfeiting), second-line and third-line anti-counterfeiting that require special instruments or devices to identify. [0003] Through the ingenious collocation and specific arrangement of various anti-counterfeiting elements, a secret anti-counterfeiting code can be formed. The anti-counterfeiting code has various changes and secret information, which makes it difficult for counterfeiters to see through and imitate....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/12G06K19/14
Inventor 黄小义刘卫东柯光明周基炜唐士立刘东王真
Owner CHINA BANKNOTE PRINTING & MINTING
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