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Preparation method for legal certificate visual anti-fake component

A certificate and visual technology, which is applied in the field of legal certificate visual anti-counterfeiting components and its preparation, can solve problems such as difficult to grasp, and achieve the effects of special manufacturing process, preventing collapse and simple structure

Active Publication Date: 2015-07-22
SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

PETG film has strong activity and is not easy to grasp during use, but at the same time it has very excellent plasticity. In the prior art, PETG material is mainly used for food and drug packaging, and its application on certificates is limited to card bodies. Such as patent application number 200410041031.8, the patent name is PETG card base for resident ID cards and its manufacturing process
Therefore, the use of PETG materials for visual anti-counterfeiting parts of documents has not yet been reported.

Method used

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  • Preparation method for legal certificate visual anti-fake component

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preparation example Construction

[0029] The preparation method of the legal document visual anti-counterfeiting component of the present invention comprises the following steps:

[0030]Step 1: Fabrication of PETG film. Using the casting method, through the mutual cooperation of the extrusion amount and the stretching speed, the thickness of the film is controlled to be 35-120 μm, and the thickness is detected online by using the principle of different light transmittance of the film of different thickness; PETG particle heating temperature 180-270°C; use twin-screw feeding to ensure that the feeding cavity rate (ratio of feeding volume to cavity volume) can be fed at a constant speed and uniformly from 0 to 100%; the vacuum method is used to replace the original heating method to remove PETG particles Eliminate water vapor blasting from the inner layer of the film at high temperature and leave a blast hole on the surface of the film, commonly known as "air trap"; twin-screw feeding method and vacuum dehydrat...

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Abstract

The invention relates to the field of a legal certificate visual anti-fake technology, in particular to a legal certificate visual anti-fake component. The legal certificate visual anti-fake component comprises a substrate layer, an information layer, a lingering layer, a reflective layer and a reinforced layer which are sequentially compounded from top to bottom, wherein the substrate layer is a PETG thin film, and the substrate layer and the information layer are integrated. A preparation method of the legal certificate visual anti-fake component includes the steps of selecting the PETG thin film as the substrate layer; copying a laser holography work version; coating the information layer on the substrate layer, and copying holographic grating of the laser holography work version onto the information layer; manufacturing the lingering layer and manufacturing the reflective layer on the lingering layer; developing; manufacturing the reinforced layer; curing the reinforced layer. According to the legal certificate visual anti-fake component and the preparation method of the legal certificate visual anti-fake component, the PETG thin film is adopted as the substrate layer, the PETG thin film can be softened under a certain temperature and pressure and can be directly bonded with a clamp body, environmental protection is facilitated, the PETG thin film is in crosslinking with the information layer to a certain degree, and the combination is quite tight. Besides, the manufacturing process is particular, and a great leap is achieved on the certificate visual anti-fake technology.

Description

[technical field] [0001] The invention relates to the technical field of visual anti-counterfeiting of statutory certificates, in particular to a visual anti-counterfeiting component of legal certificates and a preparation method thereof. [Background technique] [0002] The visual anti-counterfeiting of the document is embodied in the anti-counterfeiting film of the document. In the prior art, the visual anti-counterfeiting part of the document usually uses PET, PVC and other materials as the carrier, and is bonded to the card body through the adhesive layer, and basically uses a relatively single The printing method realizes the transmission and reproduction of information. PETG film has strong activity and is not easy to grasp during use, but at the same time it has very excellent plasticity. In the prior art, PETG material is mainly used for food and drug packaging, and its application on certificates is limited to card body. Such as the patent application number 2004100...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F3/02B32B27/36B32B33/00
Inventor 黄斗兴刘庆佩孔汉璋朱云峰顾文佳
Owner SHANGHAI HONGDUN ANTI COUNTERFEIT MATERIAL
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