Positioning laser certificate anti-fake thin film for individually printing and preparation method thereof

A technology of laser and thin film, applied in the field of anti-counterfeiting film for positioning laser documents and its preparation, can solve the problems of unfavorable large-area laminated cards, easy to be replaced, card body warping, etc., to achieve enhanced security and social stability, Simplify the certification equipment and process, unique effect of process design

Active Publication Date: 2013-10-09
SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PET film is widely used at home and abroad to make positioning laser anti-counterfeiting film for document anti-counterfeiting. PET film has excellent temperature resistance and is also conducive to laser printing personalized information. However, due to the strong crystallinity and strong cohesion of PET film, it is easy to be exposed On the other hand, the front and back sides of the certificate need to be used in pairs, otherwise it is easy to warp the card body
PVC film is a non-crystalline material with low cohesive force and is easily deformed at high temperature. It is widely used in the production of lamination-free tape film, but it is rarely used for positioning laser anti-counterfeiting printing carriers.
At the same time, the PVC tape film can hardly withstand the high temperature of the fixing roller of ordinary laser printers, so PVC cards are generally printed by thermal sublimation, which requires a special card printer, and is not conducive to large-area lamination of cards. Application report of PVC positioning laser anti-counterfeiting film with chemical printing

Method used

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  • Positioning laser certificate anti-fake thin film for individually printing and preparation method thereof

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preparation example Construction

[0024] The invention relates to a certificate anti-counterfeiting film and its preparation method which is applied in the field of anti-counterfeiting and has the functions of personalized printing and positioning laser anti-counterfeiting. An anti-counterfeit film with special printing on it by a specific process. The structure of the anti-counterfeit film is anti-static layer 1, substrate 2, composite adhesive layer 3, substrate 4, laser information layer 5, reflective medium layer 6, anti-counterfeit graphics Layer 7, adhesive layer 8.

[0025] Among them, the antistatic layer is a coating made of a variety of polymers containing conjugated π electron structures or water-soluble polymer materials containing sulfonic acid groups, carboxyl groups, and hydroxyl groups, or a coating containing conductive powders containing rare earth oxides. Resin coating, which is coated on the outermost layer of the film layer, to ensure that the material can be printed in large quantities wi...

Embodiment 1

[0035] The PVC film with a thickness of 60 μm is used as the substrate, and the light-cured coating is partially rolled on it. The graphic surface of the metal nickel plate engraved with laser information such as orthogonal optical change and 3D dynamic graphics and text is completely bonded to the light-curing coating under a pressure of 3000N / m2, and an ultraviolet lamp with a light intensity of 120w / cm is used for light treatment. After curing, the dry film thickness of the coating is 2.0-2.5 μm. Remove the metal nickel plate to obtain a PVC film with localized positioning and printed laser graphics. Physical deposition of a layer of SiO by thermal evaporation on photocurable coatings 2 Coating, the thickness is about 60nm. Use gravure printing to print anti-counterfeit graphics on the coating, chemically corrode after drying, and obtain laser graphics with enhanced local reflection. Then apply a layer of water-based polyurethane hot melt adhesive by roller coating, dry ...

Embodiment 2

[0037] Under the same conditions as in Example 1, change the laser information, change the PET film base material into 80g coated paper, use LED to print the head portrait and personal information on the PVC adhesive layer, and use the card core with the chip After lamination, the portrait information with high resolution and good reproducibility can be obtained, which is both beautiful and anti-counterfeiting. It is suitable for making student ID cards, high-end club membership cards and other ID documents.

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Abstract

The invention relates to the technical field of an anti-fake thin film and a preparation method thereof, and in particular relates to a positioning laser certificate anti-fake thin film for individually printing, wherein the thin film comprises an anti-static layer, a base material, a composite glue layer, a base material, a laser information layer, a reflecting medium layer, an anti-fake image-text layer and an adhesive layer, which are sequentially connected with one another from top to bottom. In order to obtain the anti-fake thin film with the structure, the laser anti-fake image text is prepared on the base in a positioning way at high precision, and is compounded with the base material, and a PVC (polyvinyl chloride) film is supported by the base material. The preparation method specifically comprises the following steps of: (1) preparing the laser information layer; (2) physically depositing the reflecting layer; (3) printing the anti-fake image text; (4) deionizing; (5) coating the adhesive layer; and (6) compositing. According to the thin film and the preparation method thereof provided by the invention, the position laser anti-fake function and the individual printing function are integrated onto the PVC film and a PETG (polyethylene terephthalate glycol) film to prepare a card in a layering way, the thin film and the preparation method thereof are unique in technical design and low in comprehensive cost, the certificate preparation equipment and technological process can be simplified, the manipulation resistance, the forgery resistance and the alteration resistance of the certificate can be preferably carried out, and the thin film can be widely used for the fake resistance of various legal certificates, certificate card tickets and the like.

Description

[technical field] [0001] The invention relates to the technical field of anti-counterfeiting films and preparation methods thereof, in particular to a positioning laser document anti-counterfeiting film for personalized printing and a preparation method thereof. [Background technique] [0002] With the in-depth development of my country's residence permit system, bank security credit system, and service industry standardization system, the issuance of my country's certificates is increasing, including identity cards, credit cards, membership cards, passports, visas, etc. Residents need to use various documents for employment, life, business, tourism, etc., which also breeds some high-tech crimes, such as tampering with personalized information and imitating various documents. In order to combat this phenomenon, the identity documents of various countries widely use information-based digital encryption technology. However, when personal information is not shared or the readi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/50B32B27/06B32B9/04B32B33/00B32B37/02B32B37/12B32B37/15B32B38/14
Inventor 彭继荣黄斗兴滕晓辉凌夏冰
Owner SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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