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Sandwich anti-fake element containing magnetic film, paper products containing the element and manufacturing method thereof

A technology of anti-counterfeiting components and production methods, which is applied in the direction of layered products, printed matter, computer parts, etc., can solve the problems of anti-counterfeiting component thickness and specific weight, unfavorable papermaking and anti-counterfeiting component hiding, etc., so as to improve anti-counterfeiting ability and concealment Anti-counterfeiting effect, beneficial effect of mosaic

Active Publication Date: 2011-09-07
CHINA BANKNOTE PRINTING & MINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a kind of anti-counterfeit element with a sandwich layer containing a magnetic film for the current anti-counterfeit element with large thickness and specific gravity, which is not conducive to the release in papermaking and the hidden defects of the anti-counterfeit element. The thickness is not affected by the thickness of the coating substrate, and the outer masking layer can adjust the thickness and specific gravity according to the characteristics of the embedded paper, which is more conducive to the embedding and hiding of anti-counterfeiting elements in the paper

Method used

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  • Sandwich anti-fake element containing magnetic film, paper products containing the element and manufacturing method thereof
  • Sandwich anti-fake element containing magnetic film, paper products containing the element and manufacturing method thereof
  • Sandwich anti-fake element containing magnetic film, paper products containing the element and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] According to the ordinary copying process, the specific gravity of the copying is 0.65g / cm 3 , cotton fiber paper layer 1a and cotton fiber paper layer 1b with a thickness of 15 μm and 20 μm. On the PET substrate film with a thickness of 20 μm, a silicone oil release film 2 with a thickness of 10 μm is coated, and dried or cured. The raw material of the silicone oil release film is a commercially available product, and a fluoroplastic release film (commercially available) can also be used. A vacuum magnetron sputtering roll coater is used to sputter a layer of amorphous coating 3 with a thickness of 50 nm on the surface of the release film 2, such as the amorphous film in the embodiment of CN200710122026.3. On the peeling machine, the amorphous coating film 3 and the release film 2 are peeled off from the PET base film, and the starch adhesive is used for surface sizing, and then the cotton fiber paper layers 1a and 1b are laminated on the composite machine. put toget...

Embodiment 2

[0051] Choose a specific gravity of 0.85g / cm 3 The polypropylene film is used as masking layer 1a and 1b. On the PET substrate film with a thickness of 30 μm, a layer of fluoroplastic release film 2 with a thickness of 5 μm is coated and dried or cured. The raw material of the fluoroplastic release film is a commercially available product, and a silicone oil release film (commercially available) may also be used. Use a vacuum magnetron sputtering roll coater to sputter a layer of amorphous coating 3 with a thickness of 30nm on the surface of the release film 2, for example, the coating composition is Ni 38 Cr 8 Fe 54 alloy. On the peeling machine, the amorphous coating film 3 and the release film 2 are peeled off from the PET base film, and after surface sizing, they are pressed on the composite machine with the polypropylene films 1a and 1b as the masking layer by lamination. put together and get figure 1 For the anti-counterfeiting components shown, the specific proces...

Embodiment 3

[0053] use image 3 With the shown device and operation, the anti-counterfeiting element 24 obtained by compounding according to the method of embodiment 1 or embodiment 2 is embedded in two layers of paper 23a and 23b in papermaking, and the Figure 4 The security paper shown.

[0054] The anti-counterfeiting paper can be banknote paper, valuable product packaging paper or cardboard, etc.

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Abstract

The invention provides a sandwich anti-fake element containing a magnetic film and a preparation method thereof. The anti-fake element is formed by compounding the magnetic film, a release film and covering layers, wherein the magnetic film is formed on the surface of the release film, and the covering layers are respectively compounded on the outer sides of the magnetic film and the release filmto form a sandwich structure. The anti-fake element comprises the following manufacturing steps: coating the release film on the surface of a flexible substrate; manufacturing the magnetic film layer; stripping the magnetic film layer and the release film off from the flexible substrate; compounding a sandwich; and blanking into the anti-fake element of the required shape. The thickness of the anti-fake element is not influenced by the thickness of the film coated substrate, and the thickness and specific gravity of the covering layers on the outer sides can be selected according to the characteristic of the embedded paper, thereby being more favorable for embedding and concealing the anti-fake element in the paper.

Description

technical field [0001] The invention relates to an anti-counterfeit element with a magnetic film in the sandwich layer, which can be used to produce valuable documents such as banknotes, securities, checks, passports, labels or signs, etc. The invention also relates to the magnetic film in the sandwich layer Method for manufacturing a security element. Background technique [0002] In order to improve the anti-counterfeiting ability of valuable documents such as banknotes, securities, checks, passports, signs, etc., anti-counterfeiting elements with magnetic anti-counterfeiting information are often embedded in paper, such as security threads and security sheets. The magnetic security thread is formed by setting a magnetic information layer on the surface of the substrate, and embedded in the paper by opening a window or fully burying it. The magnetic information layer usually deposits appropriate magnetic metal or alloy components on the surface of the substrate by methods...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/00B32B9/04B42D15/00G06K19/06
Inventor 李晓伟李万里文大兴李策曹瑜李新宇李鸿斌
Owner CHINA BANKNOTE PRINTING & MINTING
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