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Nuclear track anti-counterfeit transfer film and manufacturing method thereof

A manufacturing method and nuclear track technology, applied in the field of anti-counterfeiting, can solve the problems of difficulty in accurate positioning, broken belts, and difficult to avoid damage to the bottom belt, and achieve the effect of stable quality and easy quality control.

Inactive Publication Date: 2008-08-13
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the base material of the nuclear track anti-counterfeiting film is a plastic film with a thickness greater than 10 microns, in order to thermally transfer the nuclear track anti-counterfeiting film to the packaging material that needs anti-counterfeiting, it must be punched and then hot stamped with positioning. This method is difficult to achieve accurate positioning due to film deformation. In addition, due to punching, it is difficult to avoid damage to the bottom belt, and it is easy to cause belt breakage during use.
Therefore, the nuclear track anti-counterfeiting film produced by the prior art is not suitable for transferring the anti-counterfeiting film to the package by heat transfer technology to realize packaging integration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1 Nuclear track anti-counterfeiting thermal transfer film

[0068] 1. Coating acrylate release layer on PET, coating thickness 0.8g / m 2 ;

[0069] 2. Then apply 2.0g / m on it 2 Multi-mixed resin layer;

[0070] 3. Reactor fission fragments irradiate the above-mentioned film, and the irradiated surface is a multi-mixed resin surface;

[0071] 4. Make a printing plate according to the required pattern;

[0072] 5. Gravure printing hot melt on the multi-mixed resin surface;

[0073] 6. Chemical etching: 6.25N NaOH 70°C, etching for 5 minutes;

[0074] 7. Cleaning: wash in water for 3 times for 10 minutes;

[0075] 8. Drying: Dry at 40°C for 5 minutes.

Embodiment 2

[0076] Example 2 Nuclear track anti-counterfeiting thermal transfer film

[0077] 1. Coating acrylate release layer on PET, coating thickness 0.5g / m 2 ;

[0078] 2. Then apply 5.0g / m on it 2 Multi-mix resin layer of acrylate and epoxy resin;

[0079] 3. Press the laser pattern;

[0080] 4. Vacuum evaporation aluminum layer;

[0081] 5. Accelerator-accelerated 100MeV Ar-40 irradiates the thermal transfer film, and the irradiated surface is an aluminum-coated layer.

[0082] 6. Make a printing plate according to the required pattern;

[0083] 7. Use a gravure printing machine to print hot melt on the irradiated film aluminized layer to form the required pattern;

[0084] 8. Sodium hypochlorite solution at 60°C, etched for 10 minutes;

[0085] 9. Wash the above film in water for 3 times, the total time is about 10 minutes.

[0086] 10. Dry at 40°C to 70°C for 3 minutes.

Embodiment 3

[0087] Example 3 Nuclear track anti-counterfeiting cold transfer film:

[0088] 1. Coating acrylate release layer on PET, coating thickness 1.0g / m 2 ;

[0089] 2. Then apply 2.0g / m on it 2 Multi-mix resin layer of acrylate and epoxy resin;

[0090] 3. Press the laser pattern;

[0091] 4. Reactor fission fragments irradiate the above film, and the irradiated surface is a multi-mixed resin surface;

[0092] 5. Make a printing plate according to the required pattern;

[0093] 6. Use a gravure printing machine to print hot melt on the multi-mixed resin layer after irradiation to form the required pattern;

[0094] 7.5N NaOH 65°C, etch for 10 minutes;

[0095] 8. Wash the above film in water for 3 times, the total time is about 10 minutes.

[0096] Dry at 9.50°C for 2 minutes.

[0097] 10. According to the size of the label, print UV curable ink on the hot melt adhesive surface.

[0098] When in use, it is irradiated with UV light, and the nuclear track anti-counterfeiting...

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Abstract

The invention discloses a nuclear track security transfer film and the manufacturing method, which belong to the anti-counterfeiting technology field .The nuclear track security transfer film includes thermal transfer film and cold transfer film ,which are formed by coating a multi-mixed resin layer on PET coating ,and the multi-mixed resin layer can be transferred and can suppress laser. The preparation technology is as follows: the nuclear track is formed on a thermal transfer laser layer or a cold transfer laser layer after suppression of laser hologram, irradiation, imaging, chemical etching, cleaning in soft water and drying, thus the preparation of nuclear track security transfer film is completed. Besides, the thickness of the produced nuclear track security transfer film is only 1 micron or a few microns, the produced nuclear track security transfer film can attach the nuclear track which has anti-counterfeit feature to carriers having various packages by methods of heat and cold transfer without punching. The mature preparation technology is suitable for rapid completion of large quantities of additional anti-counterfeiting technology, and precision positioning. The problem that the bottom belt is easy to rupture in the conventional manufacturing of anti-counterfeit labels in a rapid labeling machine is avoided because of no punching.

Description

technical field [0001] The invention belongs to the field of anti-counterfeiting technology, and in particular relates to a nuclear track anti-counterfeiting transfer film and a manufacturing method thereof. Background technique [0002] The existing nuclear track anti-counterfeiting technology is to make the nuclear track on the PET film, so it is suitable for compounding with paper or plastic film to make a label. Since the base material of the nuclear track anti-counterfeiting film is a plastic film with a thickness greater than 10 microns, in order to thermally transfer the nuclear track anti-counterfeiting film to the packaging material that needs anti-counterfeiting, it must be punched and then hot stamped with positioning. This method is difficult to achieve accurate positioning due to film deformation. In addition, due to punching, it is difficult to avoid damage to the bottom belt, and it is easy to cause broken belts during use. Therefore, the nuclear track anti-c...

Claims

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Application Information

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IPC IPC(8): B41M5/00B41M1/30B44C1/165B44C1/22B29C59/16
Inventor 王玉兰徐世平陈靖邢宾杰
Owner TSINGHUA UNIV
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