Sheet-like anti-counterfeiting material and anti-counterfeiting paper

A sheet-like, anti-counterfeiting layer technology, applied in papermaking, textiles and papermaking, fiber raw material processing, etc., can solve the problem of lack of anti-counterfeiting paper

Active Publication Date: 2011-06-29
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, there is a lack of anti-counterfeiting paper in the field with multi-level anti-counterfeiting functions such as naked eye recognition, fast machine reading, and expert analysis.

Method used

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  • Sheet-like anti-counterfeiting material and anti-counterfeiting paper
  • Sheet-like anti-counterfeiting material and anti-counterfeiting paper
  • Sheet-like anti-counterfeiting material and anti-counterfeiting paper

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preparation example Construction

[0061] The present invention also provides a preparation method of a sheet-shaped anti-counterfeiting material, comprising the steps of:

[0062] The main fiber and composite fiber are added in the main slurry according to the required ratio to form a paper anti-counterfeiting carrier layer;

[0063] Adding an anti-counterfeiting layer on the surface of the paper anti-counterfeiting carrier layer to obtain a sheet-like anti-counterfeiting material composite layer;

[0064] The composite layer of the sheet-shaped anti-counterfeiting material is cut and formed into a special-shaped structure other than a regular quadrilateral, so as to obtain the sheet-shaped anti-counterfeiting material.

[0065] In a specific embodiment of the present invention, the special-shaped sheet-shaped anti-counterfeit material of the present invention is composed of two parts: an anti-counterfeit carrier and an anti-counterfeit layer. Among them, the anti-counterfeiting carrier is made of cotton fibe...

Embodiment 1

[0075] A five-pointed star-shaped anti-counterfeiting material, the paper anti-counterfeiting carrier is made by uniformly mixing 90% cotton pulp and 10% fish-scale spruce wood semi-chemical pulp, and the anti-counterfeiting layer is a pattern printed by magnetic pearlescent ink screen. Its shape is a five-pointed star with a diameter of 5 mm. The paper with this kind of anti-counterfeiting material has three layers of anti-counterfeiting functions: the public can see the pearly five-pointed star in the paper with the naked eye; the instrument can quickly detect its magnetic properties; It is wine red, and the fibers of spruce spruce are bright yellow; there are crack-type pits unique to spruce on the fibers of spruce spruce, and the angle between the axial direction of the pit and the fiber axis is less than 30°.

Embodiment 2

[0077] A star-shaped sheet-shaped anti-counterfeiting material, the paper-based anti-counterfeiting carrier is made by uniformly mixing 95% cotton pulp, 4.5% chemical wood pulp, and 0.5% wool (length: 1.0±0.1mm), and the anti-counterfeiting layer is coated the Y 2 o 3 :Eu 3+ 、Sr 2 SiO 8 .2SrCl 2 :Eu 2+ Phosphor. It is red under 254nm ultraviolet excitation and blue under 365nm ultraviolet excitation. This feature can be observed with the naked eye and can be identified with an instrument. After dyeing with Herzberg stain, it can be observed that the cotton fiber is wine red, the wood pulp fiber is light blue to purple blue, and the wool fiber is light yellow. Under the microscope, it can be observed that wool has a longitudinal scale-like structure unique to animal fibers.

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Abstract

The invention provides a sheet-like anti-counterfeiting material, and the sheet-like anti-counterfeiting material adopts a special-shaped structure except for positive quadrilateral; the sheet-like anti-counterfeiting material comprises the following layered structures: a paper-based anti-counterfeiting carrier layer, wherein the paper-based anti-counterfeiting carrier is paper prepared by remixing at least two fibers; and a anti-counterfeiting layer. The invention also provides a preparation method of the sheet-like anti-counterfeiting material, and anti-counterfeiting paper containing the sheet-like anti-counterfeiting material. Based on the sheet-like anti-counterfeiting material of the invention, anti-counterfeiting paper can be obtained with multi-level anti-counterfeiting functions of visual identification, rapid machine-reading, and expert analysis.

Description

technical field [0001] The invention relates to a paper anti-counterfeiting material, which belongs to the technical field of paper anti-counterfeiting. Background technique [0002] Using sheet materials to carry anti-counterfeiting substances is one of the effective ways for paper to realize anti-counterfeiting function. [0003] In the prior art, there is a sheet-shaped anti-counterfeiting material composed of a paper carrier and an anti-counterfeiting layer, but the paper carrier involved is only a carrier of the anti-counterfeiting layer and does not have anti-counterfeiting performance itself. [0004] A fluorescent fiber paper is also disclosed in the prior art. In the structure of the anti-counterfeiting mark, the substrate layer is a fluorescent fiber paper provided with colored fibers and / or fluorescent fibers visible under ultraviolet light, which has a certain anti-counterfeiting function. However, the anti-counterfeiting function possessed by the fluorescent fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/40D21H15/02B32B29/00
Inventor 李鸿斌张敏
Owner CHINA BANKNOTE PRINTING & MINTING
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