Patent of the Month

The International Hologram Manufacturers Association (IHMA) Patent Newsletter is a monthly review of patents issued in the fields of security, decorative and data storage holography, along with holographic techniques, processes and displays.

In the ‘Printing Card Relief Microlens’ category of February’s edition of the newsletter, Wuhan Huagong Image Technology & Development discloses an application that provides a transparent anti- counterfeiting film and an anti-counterfeiting certificate card which relates to the field of anti-counterfeiting printing.

The transparent anti-counterfeiting film comprises a wear-resistant layer, a base film layer, an imaging layer, a dielectric layer, an anti-ultraviolet layer and an adhesive layer which are sequentially stacked, wherein holographic patterns are arranged on the surface, close to the dielectric layer of the imaging layer.

The wear-resistant layer is made of UV resin, and a micro-lens array is arranged on the surface, close to the base film layer of the imaging layer.

The anti-counterfeiting certificate card comprises a card and the transparent anti-counterfeiting film. The transparent anti-counterfeiting film in the embodiment of the application is resistant to wear and can resist ultraviolet rays. The speed of losing key information on the anti- counterfeiting card due to yellowing and aging can be reduced by sticking the transparent anti-counterfeiting film on the anti-counterfeiting card.

The patent claims that the utility model provides a transparent anti-counterfeiting film characterised by a wearing layer, base membrane layer, imaging layer, dielectric layer, anti-ultraviolet layer and the glue film that the stromatolite set up in proper order.

The imaging layer is close to the surface of dielectric layer, which is provided with holographic pattern, the material of wearing layer is the UV resin, and is close to the surface of the base membrane layer, which is provided with the microlens array.

Transparent anti-counterfeiting film and anti- counterfeiting certificate card.

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