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Anti-counterfeiting material, manufacturing method of anti-counterfeiting material, anti-counterfeiting element and anti-counterfeiting pigment

A production method and technology of anti-counterfeiting components, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, identification devices, etc., can solve the problems of single use range of films and no material use value

Pending Publication Date: 2021-11-02
CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scope of use of the above-mentioned film is single, and the use value of this kind of material has not been brought into full play.
Moisture-sensitive layer-by-layer assembly films have not been used to show / hide clear images with tunable structural colors

Method used

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  • Anti-counterfeiting material, manufacturing method of anti-counterfeiting material, anti-counterfeiting element and anti-counterfeiting pigment
  • Anti-counterfeiting material, manufacturing method of anti-counterfeiting material, anti-counterfeiting element and anti-counterfeiting pigment

Examples

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Effect test

Embodiment 1

[0065] This embodiment provides an anti-counterfeiting material, which can be the first color under natural light when the humidity value of the environment is less than the first humidity value; and when the humidity value of the environment is greater than or equal to the first humidity value, And when it is less than or equal to the second humidity value, in response to the change of the humidity value, at least two color changes occur on the basis of the first color, wherein at least two color changes can be identified under natural light.

[0066] The embodiment of the present application proposes an anti-counterfeiting material, which can display different colors under different humidity environments, so this characteristic can be used for counterfeiting. When authenticating products made of this material, change the humidity of the environment where the product is located, so as to determine the authenticity of the product by observing the color change of the finished pr...

Embodiment 2

[0094] This embodiment provides an anti-counterfeiting material. In addition to the technical features of Embodiment 1 above, this embodiment further includes the following technical features.

[0095] Polyelectrolyte films contain polyelectrolyte materials that are capable of undergoing volume changes under changes in humidity.

[0096] In this embodiment, the polyelectrolyte film includes a polyelectrolyte material, and the volume of the polyelectrolyte material can change under humidity changes. For example, when the humidity changes, the polyelectrolyte material will swell or deswell. Specifically, the polyelectrolyte material can When it comes into contact with liquid, it can swell, and then the volume increases. On the contrary, when it cannot touch the liquid, it can deswell, and then the volume decreases, that is, there is a volume change, and then a dynamic structural color is produced. Because the above color change is There is a line-corresponding relationship with...

Embodiment 3

[0098] This embodiment provides an anti-counterfeiting material. In addition to the technical features of any of the above embodiments, this embodiment further includes the following technical features.

[0099] Polyelectrolyte films include chitosan films and photoactive carboxymethylcellulose-azido derivative films.

[0100] In this embodiment, the polyelectrolyte film includes a chitosan film and a photoactive carboxymethylcellulose-azido derivative film, which further broadens the range of humidity that the anti-counterfeiting material can respond to, increases the color types that the anti-counterfeiting material can change, and improves the anti-counterfeiting effect. Material reliability.

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Abstract

The invention provides an anti-counterfeiting material, a manufacturing method of the anti-counterfeiting material, an anti-counterfeiting element and an anti-counterfeiting pigment. When the humidity value of the environment where the anti-counterfeiting material is located is smaller than a first humidity value, the anti-counterfeiting material is in a first color under natural light; when the humidity value of the environment is larger than or equal to the first humidity value and smaller than or equal to the second humidity value, at least two color changes occur on the basis of the first color in response to the change of the humidity value, and the at least two color changes can be recognized under natural light, under differenthumidity environments, the different colors of the anti-counterfeiting are presented, so that the characteristics can be used for authentic identification.

Description

technical field [0001] The invention relates to the technical field of anti-counterfeiting materials, in particular, to an anti-counterfeiting material, a method for making the anti-counterfeiting material, an anti-counterfeiting element and an anti-counterfeiting pigment. Background technique [0002] In related art, humidity-sensitive thin films were developed to monitor humidity changes and showed potential applications in non-contact control of diodes or computers. However, the range of application of the above-mentioned thin film is single, and the use value of the material has not been brought into full play to the greatest extent. Moisture-sensitive layer-by-layer assembled films have not been used to show / hide clear images with tunable structural colors. Contents of the invention [0003] The present invention aims to solve at least one of the above technical problems. [0004] Therefore, the first object of the present invention is to provide an anti-counterfeit...

Claims

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Application Information

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IPC IPC(8): G09F3/02C09K9/00
CPCG09F3/0291G09F3/0294C09K9/00
Inventor 董亚鲁陈韦刘萃王斌陈庚古克
Owner CHINA BANKNOTE SECURITY PRINTING TECH RES INST CO LTD
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