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Composite film with reflecting holographic and angular color change information double property

A technology of light angle discoloration and reflection holography, which is applied in patterns characterized by light projection effects, applications of photosensitive materials, optics, etc.

Inactive Publication Date: 2005-03-02
SHANGHAI TECHSUN ANTI COUNTERFEITING TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, combining the above two technologies to prepare an anti-counterfeiting film with the functions of reflection hologram and light angle color-changing pattern to improve the anti-counterfeiting strength has not been reported so far.

Method used

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  • Composite film with reflecting holographic and angular color change information double property
  • Composite film with reflecting holographic and angular color change information double property
  • Composite film with reflecting holographic and angular color change information double property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A transparent film with dual properties with reflective holograms and information patterns that change color depending on the viewing angle, with a structure such as Figure 4 shown. The preparation of the reflective holographic layer refers to the method described above, and the photosensitive layer material, monomer, photoinitiator, etc. are coated on the PET film with the organic protective layer 2, the coating thickness is 15μm, and the protective film is applied after drying.

[0030] The preparation of the optical angle-chromic pattern functional layer also refers to the method described above. The optical angle-chromic pattern 23 with patterns or characters made of the optical angle-chromic effect material is combined with the isolation protective layers 22 and 24 to form the optical angle-chromic layer. The release layer 6 of the reflective holographic recording layer is peeled off, the protective layer 21 of the photochromic functional layer is peeled off, and ...

Embodiment 2

[0036] A film with dual properties that has reflection holograms and information patterns that change color with the viewing angle. Its structure is as follows Figure 5 shown. The material used for the reflective holographic layer is the same as in Example 1, and it is coated on PET with a coating thickness of 12 μm. After drying, a protective film is applied. The reflective holographic layer 10 includes a PET cover film 1 , a protective layer 2 , a photopolymer information recording layer 3 , and an isolation enhancing layer 4 .

[0037] The preparation of the optical angular color-changing pattern functional layer 23 is the same as that in Example 1. The release layer 6 of the reflective holographic recording layer and the protective layer 21 of the optical angle-chromic pattern layer are peeled off respectively, and the reflective holographic layer 10 and the optical angle-chromic layer 20 are combined at about 110° C. with an acrylic heat-sensitive adhesive layer 5 . Us...

Embodiment 3

[0041] The anti-tamper film has the above-mentioned dual characteristics, and the anti-tamper function is realized by making a fragile film. Its structure is as Image 6 shown.

[0042] The preparation of each functional film is as in Example 1. The fragile base material adopts polyurethane photopolymer film (such as the product of Fudan Tianchen Company, the model is PA5003J), respectively adds reinforcement layer 4 and isolation layer 24, and then composites with functional film Form, be coated with coloring layer 25 and self-adhesive layer 26 again, cover release type protective film 27 again.

[0043] When the mark made by this method is peeled off from the release paper layer 27, pasted on the base material, and then lifted off from the base material, the mark will be destroyed naturally, thereby ensuring that the mark will not be reused.

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PUM

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Abstract

The composite film with reflecting hologram and angular color changing diagram consists of reflecting holographic layer and angular color changing information diagram layer connected via connecting layer. The reflecting holographic layer consists of surface covering layer, protecting layer, optical polymer information record layer and reinforcing layer compounded successively. The angular color changing information diagram layer consists of isolating layer, light changing function layer of angular color changing material, isolating layer, coloring layer and adhering layer compounded successively. The preparation process of the composite film includes the following steps: preparing reflecting holographic layer and the angular color changing layer separately, laminating or hot compounding the two, and optical copying. The present invention has raised anti-fake effect and may be used in anti-fake widely.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeit film materials, and in particular relates to a composite film with dual characteristics of reflection holography and optical angle change color. Background of the invention [0002] In the prior art, reflection holograms made of high polymer photosensitive materials (see Chinese patent 021374732) have high reflection efficiency, good viewing angle and three-dimensional effect, and can be used as anti-counterfeiting materials and decorative materials, which are different from The uniqueness of the molded hologram is the uniqueness of the material and the uniqueness of the vision, which improves the anti-counterfeiting level to a certain extent. Specific patterns or characters made of photochromic materials have photochromic properties (see Chinese Patent No. 021369747). The material changes color obviously, is easy to identify, and is difficult to forge, thereby achieving an effective anti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44F1/08G03C1/73G03C1/74G03H1/02
Inventor 徐良衡高芸游仁松宋立君李晓英董兰新
Owner SHANGHAI TECHSUN ANTI COUNTERFEITING TECH HLDG
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