CN107644582B - Holographic anti-counterfeiting film - Google Patents
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- CN107644582B CN107644582B CN201710977702.9A CN201710977702A CN107644582B CN 107644582 B CN107644582 B CN 107644582B CN 201710977702 A CN201710977702 A CN 201710977702A CN 107644582 B CN107644582 B CN 107644582B
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- 239000010410 layer Substances 0.000 claims abstract description 149
- 238000007639 printing Methods 0.000 claims abstract description 27
- 239000004831 Hot glue Substances 0.000 claims abstract description 11
- 239000003086 colorant Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 230000002441 reversible effect Effects 0.000 claims description 5
- 239000005083 Zinc sulfide Substances 0.000 claims description 4
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 4
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 4
- 238000007646 gravure printing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000012773 waffles Nutrition 0.000 description 1
- 235000014101 wine Nutrition 0.000 description 1
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Abstract
The invention relates to a holographic anti-counterfeiting film, which comprises a base film layer, a diffraction layer, a reflection layer, a transparent medium layer, a printing pattern layer and a hot melt adhesive layer which are overlapped from top to bottom, wherein the diffraction layer comprises a holographic pattern area and a zero-order diffraction optically variable pattern area, the zero-order diffraction optically variable pattern is converted into two colors along with different observation angles, the reflection layer is a local reflection layer, the color of the printing pattern on the printing pattern layer is the same as one of the two or more colors of the zero-order diffraction optically variable pattern, when the printing pattern is observed above the surface perpendicular to the base film, the base film is rotated to a certain angle, the color of the zero-order diffraction optically variable pattern is different from the color of the printing pattern, the printing pattern corresponding to the hollowed-out area of the reflection layer is displayed, and when the base film layer is observed after being continuously rotated for 90 degrees, the color of the zero-order diffraction optically variable pattern is the same as the color of the printing pattern, so that the printing pattern is hidden. The holographic anti-fake film has high anti-fake performance, unique anti-fake effect and simplified production process.
Description
Technical Field
The invention relates to a holographic anti-counterfeiting film, and belongs to the technical field of holographic anti-counterfeiting.
Background
The anti-counterfeiting film is widely applied at present, and marks of the anti-counterfeiting film can be seen from cigarettes, wines, food and beverages, daily chemical products, medical packages, high-end cards, tickets, currencies and the like of mass consumer products. The key point of the anti-counterfeiting film is the holographic plate making technology, in order to improve the anti-counterfeiting performance and the attractive effect, new holographic plate making technology is continuously emerging in more than ten years, and is popularized and applied to various fields, such as: MOTION technology, platinum relief technology, cat eye technology, dynamic crystal technology, zero-order diffraction optically variable technology, and the like.
However, with the continuous progress and development of scientific technology, the mechanisms, manufacturing processes, production technologies and the like of various disclosed unit anti-counterfeiting technologies are known and mastered by related personnel in related industries more and more rapidly, so that imitation of the anti-counterfeiting technology is easier, imitation time is short, low cost enables counterfeiters to be more spurious, and therefore, the anti-counterfeiting film which has high anti-counterfeiting performance, unique effect and easy recognition by masses is an important subject which is constantly unchanged in the industry.
Disclosure of Invention
The invention provides a holographic anti-counterfeiting film aiming at the problems of the background technology, which comprises a base film layer, a diffraction layer, a reflection layer, a transparent medium layer, a printing pattern layer and a hot melt adhesive layer which are overlapped from top to bottom, wherein the diffraction layer comprises a holographic pattern area and a zero-order diffraction optically variable pattern area, the zero-order diffraction optically variable pattern realizes conversion of two colors along with different observation angles, the reflection layer is a local reflection layer, the color of a printing pattern on the printing pattern layer is the same as one of the two colors of the zero-order diffraction optically variable pattern, when the printing pattern layer is observed above the surface perpendicular to the base film, the color of the zero-order diffraction optically variable pattern is different from the color of the printing pattern, the printing pattern corresponding to the hollowed-out area of the reflection layer is displayed, the base film layer is continuously rotated for 90 degrees again, and the color of the zero-order diffraction optically variable pattern is the same as the color of the printing pattern, so that the printing pattern is hidden. The holographic anti-counterfeiting film disclosed by the technical scheme has high anti-counterfeiting performance, unique anti-counterfeiting effect and simplified production process.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a holographic anti-counterfeiting film comprising: the base film layer, the diffraction layer, the reflection layer, the transparent medium layer and the hot melt adhesive layer are sequentially overlapped from top to bottom; the diffraction layer is provided with a holographic pattern area and a zero-order diffraction optically variable pattern area; the pattern of the zero-order diffraction optically variable pattern area is converted into two colors due to different observation angles; the method is characterized in that:
the reflective layer includes: the partial mirror aluminum coating covers the upper part of the holographic pattern area, and the hollowed-out area covers the upper part of the zero-order diffraction optically variable pattern area;
a printed pattern layer is further arranged between the transparent medium layer and the hot melt adhesive layer, the color of the printed pattern in the printed pattern layer is the same as one of the two colors of the zero-order diffraction optically variable pattern, when the transparent medium layer is observed perpendicularly above the surface of the base film layer, the color of the zero-order diffraction optically variable pattern is different from the color of the printed pattern, but the printed pattern corresponding to the hollowed-out area of the reflecting layer is displayed; when the base film layer rotates 90 degrees in any direction, the zero-order diffraction optically variable pattern is observed to be the same as the printed pattern in color from the upper surface of the base film layer, and the printed pattern is hidden. The beneficial effects are as follows: the change rule is different from that of the single zero-order diffraction optically variable pattern, so that the anti-counterfeiting method has a unique anti-counterfeiting effect.
A holographic anti-counterfeiting film as described above, wherein: and a release layer is arranged between the base film layer and the diffraction layer or is also arranged between the base film layer and the diffraction layer. The beneficial effects are as follows: the holographic anti-counterfeiting film can also be used for a thermoprinting film or a transfer film.
A holographic anti-counterfeiting film as described above, wherein: the base film layer is made of one of PET, PVC, PC materials.
A holographic anti-counterfeiting film as described above, wherein: the thickness of the diffraction layer is set to be 1-2 um.
A holographic anti-counterfeiting film as described above, wherein: the specular aluminum coating is made by position printing using a gravure printer. The beneficial effects are as follows: the complex positioning aluminum washing procedure is omitted, the process is simple, and the positioning is accurate.
A holographic anti-counterfeiting film as described above, wherein: the transparent medium layer is made of zinc sulfide.
A holographic anti-counterfeiting film as described above, wherein: the pattern of the printed pattern layer is one or a combination of any of a plurality of patterns of numbers, letters, characters and figures.
A holographic anti-counterfeiting film as described above, wherein: the printing pattern layer is a reversible temperature-changing ink layer.
The holographic anti-counterfeiting film is in a colored state at room temperature, the color of a printed pattern in the printed pattern layer is the same as one of the two colors of the zero-order diffraction optically variable pattern, when the holographic anti-counterfeiting film is observed perpendicularly above the surface of the base film layer, the color of the zero-order diffraction optically variable pattern is different from the color of the printed pattern, but the printed pattern corresponding to the hollowed-out area of the reflecting layer is displayed; when the base film layer rotates 90 degrees in any direction, the zero-order diffraction optically variable pattern is observed to be the same as the printed pattern in color from the upper surface of the base film layer, and the printed pattern is hidden.
When a certain temperature is applied on the surface of the thermoprinting film in a friction way, the reversible temperature-changing ink layer is changed into a colorless state, and no matter how much the base film is rotated, no printing pattern is displayed. When the surface temperature returns to room temperature, the original display rule of the printed pattern is restored.
The beneficial effects of the invention are as follows:
(1) The anti-counterfeiting performance is higher. Compared with a single zero-order diffraction optically variable technology, the optically variable mode is more various and unique, plays a better anti-counterfeiting effect, is not easy to imitate and is easy to identify by masses.
(2) The production process is simplified. The mirror aluminum ink is positioned and printed on the surface of the diffraction layer to form the reflecting layer with metal effect, and the reflecting aluminum layer is directly positioned and printed on the required local position, so that the aluminum washing process is avoided, the production process is greatly simplified, and the positioning accuracy is also controlled.
Drawings
FIG. 1 is a schematic view of a layered structure in a first embodiment of a holographic anti-counterfeiting film according to the present invention;
FIG. 2 is one of the schematic plan views of a first embodiment of a holographic anti-counterfeit film of the present invention;
FIG. 3 is a second schematic plan view of the first embodiment of the holographic anti-counterfeit film of the present invention;
FIG. 4 is a schematic view of a layered structure in a second embodiment of the "holographic anti-counterfeiting film" of the present invention;
FIG. 5 is one of the schematic plan views of a second embodiment of the "holographic anti-counterfeit film" of the present invention;
FIG. 6 is a schematic plan view showing a second embodiment of a holographic anti-counterfeit film of the present invention.
Description of the marks in the accompanying drawings:
1-base film layer, 2-diffraction layer, 21-holographic pattern area, 22-zero diffraction light-variation pattern area, 3-reflection layer, 31-local mirror aluminum coating, 32-hollowed-out area, 4-transparent medium layer, 5-hot melt adhesive layer, 6-printing pattern layer and 7-release layer.
Detailed Description
Embodiments of the present invention are further described below with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, but any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention, which are not described in detail in the present technical solution.
Example 1
Referring to fig. 1-3, the holographic anti-counterfeiting film comprises a base film layer 1, a diffraction layer 2, a reflection layer 3, a transparent medium layer 4, a printing pattern layer 6 and a hot melt adhesive layer 5 which are overlapped from top to bottom, wherein the diffraction layer 2 comprises a holographic pattern area 21 and a zero-order diffraction optically variable pattern area 22, the zero-order diffraction optically variable pattern realizes conversion of red and green colors along with different observation angles, the reflection layer 3 comprises a local mirror aluminum coating 31 and a hollowed-out area 32, the local mirror aluminum coating 31 covers the upper part of the holographic pattern area 21, and the reflection layer above the zero-order diffraction optically variable pattern area 22 is the hollowed-out area 32.
The printing pattern layer 6 is arranged between the transparent medium layer 4 and the hot melt adhesive layer 5, and is set as follows: the pattern of the printed pattern layer is a "H G" character, which is green in color. As shown in fig. 2, when the holographic anti-counterfeit film is observed in a direction perpendicular to the surface of the base film layer, and the base film layer is rotated to a certain angle, the zero-order diffraction optically variable pattern of the zero-order diffraction optically variable pattern region 22 is displayed in red, and the printed pattern 'H G' corresponding to the hollowed-out region of the reflective layer is displayed, which is different from the green of the printed pattern; as shown in fig. 3, the base film layer is rotated by 90 degrees again clockwise or counterclockwise, and the zero-order diffraction optically variable pattern turns green again when the base film layer is viewed, the same as the printed pattern in color, thereby hiding the printed pattern "H G".
In the first embodiment of the present invention, the base film layer 1 is set to be PET; the thickness of the diffraction layer 2 was 1.0um.
In the first embodiment of the invention, the mirror aluminum coating is formed by positioning and printing by using a gravure printing machine, so that the complex positioning and aluminum washing process is omitted, the process is simple, and the positioning is accurate.
The transparent dielectric layer is made of zinc sulfide.
Example two
As shown in fig. 4 to 6, the first difference from the embodiment is that a release layer 7 is disposed between the base film layer 1 and the diffraction layer 2, i.e. two embodiments of a holographic anti-counterfeiting film according to the present invention include: a base film layer 1, a release layer 7, a diffraction layer 2, a reflection layer 3, a transparent medium layer 4, a printing pattern layer 6 and a hot melt adhesive layer 5 which are sequentially overlapped from top to bottom. The diffraction layer 2 comprises a holographic pattern area 21 and a zero-order diffraction optically variable pattern area 22, the zero-order diffraction optically variable pattern realizes conversion of two colors of yellow and blue along with different observation angles, the reflection layer 3 comprises a local mirror aluminum coating 31 and a hollowed-out area 32, the local mirror aluminum coating 31 covers the holographic pattern area 21, and the reflection layer above the zero-order diffraction optically variable pattern area 22 is the hollowed-out area 32; a printed pattern layer 6 is arranged between the transparent medium layer 4 and the hot melt adhesive layer 5, and the printed pattern layer 6 is a reversible temperature-changing ink layer. Setting: the pattern of the printed pattern layer is Chinese character Hua Gong; in the room temperature state, the two characters are yellow, as shown in fig. 5, when the base film layer is rotated to a certain angle in the observation of being perpendicular to the surface of the base film, the zero-order diffraction optically variable pattern is blue, the color of the zero-order diffraction optically variable pattern is different from that of the printed pattern, and the printed pattern corresponding to the hollowed-out area of the reflecting layer is displayed; as shown in fig. 6, after the base film layer is rotated by 90 degrees again, the light-changing pattern with zero-order diffraction is yellow when being observed downwards from the upper side of the surface of the base film layer, and the light-changing pattern is the same as the printed pattern in color, so that the "waffle" of the printed pattern is hidden. When a certain temperature is applied on the surface of the hot stamping film in a back-and-forth friction way, the reversible temperature-changing ink layer is changed into a colorless state, and no matter how much the base film rotates, two characters of a printing pattern (Chinese character 'Hua' are not displayed at the moment). When the surface temperature returns to room temperature, the original display rule of the printed pattern is restored.
In the second embodiment of the present invention, the base film layer 1 is PET, and the thickness of the diffraction layer 2 is 2.0um.
The transparent dielectric layer is made of zinc sulfide.
Compared with a single zero-order diffraction optically variable technology, the holographic anti-counterfeiting film provided by the invention has the advantages that optically variable modes are more various and more unique, a better anti-counterfeiting effect is achieved, the holographic anti-counterfeiting film is not easy to imitate and is easy to identify by masses, and the holographic anti-counterfeiting film can be also used for a thermoprinting film or a transfer film. The mirror aluminum ink is positioned and printed on the surface of the diffraction layer to form the reflecting layer with metal effect, and the reflecting aluminum layer is directly positioned and printed on the required local position, so that the aluminum washing process is avoided, the production process is greatly simplified, and the positioning accuracy is also controlled.
The above embodiments of the present invention are not to be construed as limiting the scope of the present invention, and those skilled in the art will understand that modifications and equivalent substitutions of the present invention do not depart from the scope of the technical solution of the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Claims (6)
1. A holographic anti-counterfeiting film comprising: the base film layer, the diffraction layer, the reflection layer, the transparent medium layer and the hot melt adhesive layer are sequentially overlapped from top to bottom; the diffraction layer is provided with a holographic pattern area and a zero-order diffraction optically variable pattern area; the pattern of the zero-order diffraction optically variable pattern area is converted into two colors due to different observation angles; the method is characterized in that:
the reflective layer includes: the partial mirror aluminum coating covers the upper part of the holographic pattern area, and the hollowed-out area covers the upper part of the zero-order diffraction optically variable pattern area;
a printed pattern layer is further arranged between the transparent medium layer and the hot melt adhesive layer, and the color of a printed pattern in the printed pattern layer is the same as one of two colors of the zero-order diffraction optically variable pattern;
the thickness of the diffraction layer is set to be 1-2 um;
the mirror aluminum coating is manufactured by using a gravure printing machine for positioning printing;
observing the holographic anti-counterfeiting film in a direction perpendicular to the surface of the base film layer, and displaying a zero-order diffraction optically variable pattern of the zero-order diffraction optically variable pattern area when the base film layer is rotated to a certain angle, wherein the color of the zero-order diffraction optically variable pattern is different from that of a printed pattern in the printed pattern layer, and the printed pattern corresponding to the hollowed-out area of the reflecting layer is displayed; and rotating the base film layer by 90 degrees clockwise or counter clockwise, wherein when the base film layer is observed, the color of the zero-order diffraction optically variable pattern area is changed into the same as that of the printed pattern in the printed pattern layer, and the printed pattern corresponding to the hollowed-out area of the reflecting layer is hidden.
2. A holographic anti-counterfeiting film as claimed in claim 1, wherein: and a release layer is arranged between the base film layer and the diffraction layer or is also arranged between the base film layer and the diffraction layer.
3. A holographic anti-counterfeiting film as claimed in claim 1, wherein: the base film layer is made of one of PET, PVC, PC materials.
4. A holographic anti-counterfeiting film as claimed in claim 1, wherein: the transparent medium layer is made of zinc sulfide.
5. A holographic anti-counterfeiting film as claimed in claim 1, wherein: the pattern of the printed pattern layer is one or a combination of any of a plurality of patterns of numbers, letters, characters and figures.
6. A holographic anti-counterfeiting film as claimed in claim 1, wherein: the printing pattern layer is a reversible temperature-changing ink layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710977702.9A CN107644582B (en) | 2017-10-17 | 2017-10-17 | Holographic anti-counterfeiting film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710977702.9A CN107644582B (en) | 2017-10-17 | 2017-10-17 | Holographic anti-counterfeiting film |
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| CN107644582A CN107644582A (en) | 2018-01-30 |
| CN107644582B true CN107644582B (en) | 2023-12-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870755B (en) * | 2019-03-29 | 2021-07-27 | 武汉华工图像技术开发有限公司 | Holographic anti-counterfeiting packaging film and manufacturing method of zero-order diffraction grating thereof |
| CN110867133A (en) * | 2019-11-27 | 2020-03-06 | 深圳市宜美特科技有限公司 | Cross-grain holographic anti-counterfeiting film made of polyester film material |
| CN114633572B (en) * | 2022-03-02 | 2023-12-01 | 武汉华工图像技术开发有限公司 | Optically variable anti-counterfeiting scraping ink, scraping ink product and preparation method thereof |
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| CN102910028A (en) * | 2012-09-28 | 2013-02-06 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting component and manufacturing method thereof |
| CN102956147A (en) * | 2011-08-24 | 2013-03-06 | 中钞特种防伪科技有限公司 | Anti-fake film and manufacturing method thereof |
| WO2016141420A1 (en) * | 2015-03-06 | 2016-09-15 | Innovia Security Pty Ltd | A hidden image security device and method |
| CN207302479U (en) * | 2017-10-17 | 2018-05-01 | 武汉华工图像技术开发有限公司 | A kind of holographic anti-counterfeiting film |
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2017
- 2017-10-17 CN CN201710977702.9A patent/CN107644582B/en active Active
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| CN1666888A (en) * | 2000-01-21 | 2005-09-14 | 光学涂层实验公司 | Optically variable security devices |
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