Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof

An anti-counterfeiting label, multi-level technology, applied in the directions of stamps, instruments, identification devices, etc., can solve the problems of anti-counterfeiting label products and anti-counterfeiting methods without pre-deformation and recovery characteristics, and achieve flexible and convenient implementation, cost reduction, and reliable results. Effect

Active Publication Date: 2013-03-13
黄为民 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are no anti-counterfeiting label products and anti-counterfeiting methods utilizing this multi-layered pre-deformation and recovery properties at present.

Method used

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  • Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof
  • Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof
  • Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A multi-level anti-counterfeiting indication method, which utilizes the thermally induced shape memory properties of shape memory polymers, and after thermodynamic pre-deformation treatment, the morphology of the polymers gradually changes accordingly during the gradual heating process. Features are made into labels to identify the authenticity of the item.

[0030] The thermally induced shape memory effect of the thermally induced shape memory polymer is significant: the residual deformation of the polymer after thermodynamic processing is higher than 5%; the shape recovery rate is higher than 5%. The thermotropic shape memory polymer is a pure polymer or a polymer-based composite material.

[0031] A thermotropic shape memory polymer of a certain size is used as the substrate of the label, and is subjected to multiple pre-deformation treatments at a temperature higher than the initial temperature of its glass transition or melting transition to make a fi...

Embodiment 2

[0034] Embodiment 2: Taking epoxy polymer as the matrix, the process of preparing anti-counterfeiting labels with non-overlapping pre-deformation is as follows figure 1 As shown, the following process steps are included:

[0035] Heat the label to 70°C;

[0036] pressed on its surface as figure 1 (b) Indentations shown (maximum diameter of the indentation is 5 mm, depth is 2 mm, and the distance between each indentation is 10 mm);

[0037] Lower the temperature to 60°C, and press out more indentations on different areas of its surface;

[0038] Cool to room temperature. get as figure 1 (c) Finished label shown.

Embodiment 3

[0039] Example three: the process of preparing an anti-counterfeit label with overlapping pre-deformation is as follows: figure 2 As shown, the following process steps are included:

[0040] Heat the label to 70°C;

[0041] Extrude such as figure 2 (b) the first type of indentation shown;

[0042] Lower the temperature to 60°C, and use another mold with another pattern to extrude in the same area such as figure 2 (c) The second type of indentation shown;

[0043] down to room temperature to obtain figure 2 (d) Finished label shown.

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Abstract

The invention relates to the anti-counterfeit indication technology, in particular to a multi-layered anti-counterfeit label, a production method thereof and a multi-layered anti-counterfeit indication method adopting the multi-layered anti-counterfeit label, the multi-layered anti-counterfeit label is based on the thermal shape memory effect of polymer, and the authenticity of a product can be identified according to the gradual change of the feature of the multi-layered anti-counterfeit label. The multi-layered anti-counterfeit label is provided with a substrate made of thermal shape memory polymer material, and the substrate is provided with a plurality of predeformations which are formed under different temperatures higher than the initial temperature of the glass transition or melting transition of the material in the process of one or more times of heating. The multi-layered anti-counterfeit label has a simple structure, is small and low in cost, and is hard to counterfeit; and the anti-counterfeit method is easy to implement, is low in cost, and is hard to imitate.

Description

technical field [0001] The present invention relates to anti-counterfeit indication technology, in particular to a polymer-based thermally induced shape memory effect, a multi-layer anti-counterfeit label and its manufacturing method for identifying the authenticity of products through the gradual change of its appearance, and the application of this multi-layer anti-counterfeit label The multi-level anti-counterfeiting indication method of the label. Background technique [0002] As more and more traditional anti-counterfeiting technologies (such as laser labels, barcodes and patterns, etc.) are mastered and copied by the outside world, product counterfeiting has become an increasingly serious social problem. Research and development of new anti-counterfeiting technology has become an urgent need. [0003] Many polymers have a pronounced shape memory effect, which allows them to sense changes in their environment and respond by changing their shape (returning to their orig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/02
Inventor 黄为民吴雪莲
Owner 黄为民
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