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False proof thin film and producing method thereof

A film and film layer technology, which is applied in the field of anti-counterfeiting films with invisible patterns and its production, can solve the problems of reducing the reliability of anti-counterfeiting and being easily imitated, and achieve the effects of strong anti-counterfeiting strength and enhanced visual effects.

Inactive Publication Date: 2008-12-03
CHINA BANKNOTE PRINTING & MINTING
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Problems solved by technology

The defect of visible pattern is that it is easy to be imitated, so it will greatly reduce the reliability of its anti-counterfeiting

Method used

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  • False proof thin film and producing method thereof
  • False proof thin film and producing method thereof
  • False proof thin film and producing method thereof

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Embodiment Construction

[0039] figure 1For making the device schematic diagram of anti-counterfeit film of the present invention, comprise vacuum winding coating machine 1 and pulse laser source 2, wherein, pulse laser source 2 is arranged in vacuum winding coating machine 1, is installed in the winding roller of winding room 3 4 and the vacuum coating chamber 5 between the last film deposition chamber. The production process of the anti-counterfeiting film in this device is as follows: first, the flexible substrate of the required coating is continuously unrolled by the unwinding roller 6 in the vacuum winding chamber 3, and passed by the corresponding guide rollers 7 and 8, tension Roller 9 and pressing roller 10 convey described flexible base material to coating chamber 5, and cooling roller 11 is arranged in the middle of this coating chamber 5, and five sputtering target chambers 12 are arranged on the edge of vacuum coating chamber 5 around cooling roller 11 The corresponding target sources in...

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Abstract

The invention discloses an anti-fake film and a method for making the same. The method comprises the following steps of: depositing a layer of metal film by vacuum roll coating technique on a flexible base material, producing a group of invisible codes which can only be read by machines after the dealing the metal film by a pulsed laser source or a pulsed ion source. The anti-fake film of the invention can play an anti-fake function by both naked eye visualization and machine reading, and can be analyzed by experts finally, with ideal results. Therefore, the anti-fake film can be applied widely to the prevention of fake commodities, ID cards, securities and paper money.

Description

technical field [0001] The invention relates to an anti-counterfeiting product and a manufacturing method thereof, in particular to an anti-counterfeiting film with an invisible pattern and a manufacturing method thereof. Background technique [0002] Anti-counterfeiting technology is widely used in various security documents such as securities and identity documents, and is also widely used in product anti-counterfeiting identification. A commonly used anti-counterfeiting identification mark is a metal film anti-counterfeiting mark. The metal film therein is usually produced by using a flexible roll-to-roll coating machine such as disclosed in Chinese patent document CN2339589Y. This roll-to-roll coating machine is composed of a winding chamber, a coating chamber and auxiliary devices; in the coating chamber, a plurality of magnetron sputtering targets are arranged around a cooling roller. There is an isolation groove between the two targets, and the isolation groove comm...

Claims

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Application Information

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IPC IPC(8): B44F1/12C23C14/14C23C14/34C21D1/26C22F1/00B42D25/30
Inventor 李新宇李晓伟潘峰曾飞曹瑜杨惊彭榕
Owner CHINA BANKNOTE PRINTING & MINTING
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