Double-color-line anti-counterfeiting paper and production method thereof

A production method and technology for anti-counterfeiting paper, which are applied in the directions of papermaking, textile and papermaking, fiber raw material processing, etc., to achieve the effects of simple manufacturing method, simple anti-counterfeiting means and low material cost

Active Publication Date: 2014-03-12
GUANGDONG GUANHAO HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing anti-counterfeiting paper and technology, due to the limitations of material performance, industry protection, manufacturing process and method, applicati

Method used

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  • Double-color-line anti-counterfeiting paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of chromogenic material liquid A: Dissolve 1 part of 3,3-bis(1-octyl-2-indol-3-yl)phthalide in 9 parts of mineral spirits. Then add 0.5 parts of styrene maleic anhydride and 2 parts of melamine formaldehyde resin, add water to adjust the solid content to 40%, carry out emulsification and wrapping, the target average particle size is 5±1um, and prepare a red microencapsulated material.

[0030] Preparation of Chromogenic Material B Liquid: Add 1 part of PVA-205 to water, then add 9 parts of 3,3-bis(4-dimethylaminophenyl)-6-dimethylaminophthalide to prepare 40% solid content , after high-speed dispersion and homogenization, grind to an average particle size of 0.2-1.0um, more preferably 0.2-0.4um. Prepared into a red microencapsulated material.

[0031] Preparation of chromogenic material grinding liquid: Add 1.5 parts of PVA-205 to water, then add 9 parts of 2,2-bis(4-hydroxyphenyl)propane with a melting point of 158°C to prepare a solid content of 40%, afte...

Embodiment 2

[0035] On the basis of Example 1, replace the red 3,3-bis(1-octyl-2-indol-3-yl)phthalide in the chromogenic material A liquid with the yellow 3-diethyl amino-6,8-dimethylfluoran).

Embodiment 3

[0037] On the basis of Example 1, the blue 3,3-bis(4-dimethylaminophenyl)-6-dimethylaminophthalide in the chromogenic material B liquid is replaced with the black 2-phenylamino- 3-Methyl-6-dibutylaminofluoran.

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Abstract

The invention provides double-color-line anti-counterfeiting paper and a production method thereof. According to the invention, a chromophoric material and a chromogenic material are added on raw paper; under normal circumstances, the chromophoric material and the chromogenic material are colorless chromophoric substances, one of the materials is wrapped by a microcapsule, and the other is ground. After slight scribing and friction of the paper, an electron donor substance in the chromogenic material and the chromophoric material which is granular after grinding fuse immediately by using generated tiny heat and undergo a chemical reaction so as to generate a color; after forceful scribing of the paper, the microcapsule containing another chromophoric material breaks, and the chromophoric material flows out and chemically reacts with the electron donor substance in the chromogenic material so as to generate another color; thus, two different color lines are generated on the paper through application of different scribing forces, thereby achieving an anti-counterfeiting purpose. The production method provided by the invention is easy and convenient; a discriminating means is simple; special physical conditions are not needed for discrimination, and hard substances like a finger are sufficient for completion of anti-counterfeiting authentication.

Description

technical field [0001] The invention relates to a two-color thread anti-counterfeiting paper and a production method thereof. The invention belongs to the technical field of anti-counterfeiting paper and its production. Background technique [0002] As the level of counterfeiting of invoices and vouchers is increasing day by day, the number of forgery is increasing, and the economic losses and social impact caused by counterfeiting and shoddy products are increasing. fake. In the existing anti-counterfeiting paper and technology, due to the limitations of material performance, industry protection, manufacturing process and method, application cost, etc., especially the traditional anti-counterfeiting paper and technology with a single anti-counterfeiting feature have been difficult to meet the current needs. [0003] In the field of anti-counterfeiting, there are many patents related to anti-counterfeiting technology and anti-counterfeiting paper. If the company's inventi...

Claims

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Application Information

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IPC IPC(8): D21H21/44D21H21/54
Inventor 黄阳旭李臻奎明红陈浩
Owner GUANGDONG GUANHAO HIGH TECH
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