Pigment sheet with various anti-counterfeiting functions and preparation method thereof

A technology of pigments and functions, applied in the field of pigment flakes with multiple anti-counterfeiting functions and its preparation, can solve the problems of less anti-counterfeiting pigments and single anti-counterfeiting function of anti-counterfeiting pigments, so as to improve the anti-counterfeiting performance, increase the difficulty of imitation, and increase the difficulty of imitation Effect

Inactive Publication Date: 2019-04-12
HUIZHOU FORYOU OPTICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the existing anti-counterfeiting pigments all have a single anti-counterfeiting function, and there are few anti-counterfeiting pigments that combine first-line anti-counterfeiting and second-line anti-counterfeiting.

Method used

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  • Pigment sheet with various anti-counterfeiting functions and preparation method thereof
  • Pigment sheet with various anti-counterfeiting functions and preparation method thereof
  • Pigment sheet with various anti-counterfeiting functions and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0056] refer to image 3 , the preparation method of the pigment flakes with multiple anti-counterfeiting functions comprises the following steps:

[0057] S101: Provide a base layer.

[0058] Specifically, the base layer is a rigid base, for example, the material of the base layer is quartz glass.

[0059] S102: sequentially depositing a first absorption layer, a first dielectric layer, at least one reflective layer, a second dielectric layer, and a second absorption layer on the base layer.

[0060] Wherein, at least one of the reflective layer, the first medium layer, the second medium layer, the first absorbing layer or the second absorbing layer is a material layer containing a predetermined proportion of the magnetic resonance anti-counterfeiting material with electromagnetic wave response function.

[0061] Specifically, under high vacuum conditions, physical vapor deposition (PVD) can be used to sequentially deposit the first absorbing layer, the first dielectric layer...

Embodiment 1

[0069] The pigment sheet includes a first absorption layer, a first medium layer, a first reflection layer, a second medium layer and a second absorption layer which are stacked.

[0070] In terms of mass percentage, 90-96% of the magnetic resonance anti-counterfeiting material is added to the first reflection layer, wherein the first reflection layer is an aluminum plate, and 95% of the magnetic resonance anti-counterfeiting material is added to the aluminum.

Embodiment 2

[0072] The pigment sheet comprises a first absorption layer, a first medium layer, a first reflection layer, a second reflection layer, a second medium layer and a second absorption layer which are stacked.

[0073] In terms of mass percentage, 90-96% of the magnetic resonance anti-counterfeiting material is added to the second reflection layer, wherein the first reflection layer is an aluminum plate, and 95% of the magnetic resonance anti-counterfeiting material is added to the aluminum.

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Abstract

The invention discloses a pigment sheet having various anti-counterfeiting functions and a preparation method thereof. The pigment sheet comprises at least a reflective layer having a first surface and a second surface opposite to the first surface, a first medium layer arranged at the outer side of the first surface and having a first outer surface, a second medium layer disposed on the outer side of the second surface and having a second outer surface, a first absorption layer disposed at the outer side of the first outer surface, and a second absorption layer disposed on the outer side of the second outer surface, wherein at least one of the reflective layer, the first medium layer, the second medium layer, the first absorption layer and the second absorption layer is a material layer containing a predetermined amount of magnetic resonance anti-counterfeiting material and having an electromagnetic wave responsive function. In the above manner, the pigment has an angle-dependent optical effect and a magnetic function, and also has a machine-readable second-line anti-counterfeiting function.

Description

technical field [0001] The present application relates to the technical field of anti-counterfeiting pigments, in particular to a pigment flake with multiple anti-counterfeiting functions and a preparation method thereof. Background technique [0002] In recent years, optical color-changing pigments and magnetic optical-variable pigments prepared based on the interference principle of multilayer films have been widely used in high-end anti-counterfeiting fields. In the prior art, optically variable pigments mostly adopt a five-layer symmetrical structure: absorbing layer / dielectric layer / reflecting layer / dielectric layer / absorbing layer, and the related patent is CN1202429C. Regarding magnetic pigments, US4838648 patent to Phillips et al. describes a thin film magnetically variable structure in which magnetic material can be used as reflective or absorbing layer. And the mentioned magnetic material is a cobalt-nickel alloy. The structure is absorbing layer / medium layer / mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/037C09C1/00C09D5/23
CPCC09C1/0015C09D5/23C09D11/037C09D11/50
Inventor 陈龙孙倩云陈章荣
Owner HUIZHOU FORYOU OPTICAL TECH
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