CN115384209A - Invisible intelligent anti-counterfeiting electrochemical aluminum, and preparation method and application thereof - Google Patents
Invisible intelligent anti-counterfeiting electrochemical aluminum, and preparation method and application thereof Download PDFInfo
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- CN115384209A CN115384209A CN202211211046.9A CN202211211046A CN115384209A CN 115384209 A CN115384209 A CN 115384209A CN 202211211046 A CN202211211046 A CN 202211211046A CN 115384209 A CN115384209 A CN 115384209A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Abstract
The application belongs to the technical field of anti-counterfeiting materials, in particular to invisible intelligent anti-counterfeiting electrochemical aluminum, a preparation method and application thereof, the application utilizes specific steps to form the invisible intelligent anti-counterfeiting electrochemical aluminum, so that the anti-counterfeiting electrochemical aluminum has explicit digital information and invisible special hidden codes, and further the anti-counterfeiting effect of the anti-counterfeiting electrochemical aluminum is guaranteed.
Description
Technical Field
The application belongs to the technical field of anti-counterfeiting materials, and particularly relates to invisible intelligent anti-counterfeiting electrochemical aluminum, a preparation method and application thereof.
Background
Counterfeiting is a counterfeiting behavior for famous and high-quality products, which may harm public food safety and environmental safety to cause serious negative effects, and advanced anti-counterfeiting technology can protect famous and high-quality products.
The existing anti-counterfeiting technology is generally a visible anti-counterfeiting technology, and comprises material anti-counterfeiting and digital anti-counterfeiting, the visible anti-counterfeiting technology is easy to identify, and is oriented to common consumers, the material anti-counterfeiting depends on the characteristics of the material, and the consumers need to identify the anti-counterfeiting by naked eyes and experience, so that the anti-counterfeiting technology is easy to counterfeit by other companies, the anti-counterfeiting technology is not suitable for single anti-counterfeiting identification, the digital anti-counterfeiting is that the consumers scan two-dimensional codes through mobile phones to obtain true and false information, the digital codes are generally easily-scanned visible digital information, and the counterfeiting is relatively easy.
The invisible anti-counterfeiting technology can be used for printing by using invisible ink, the infrared invisible ink is common invisible ink, the infrared invisible ink comprises infrared excitation ink and infrared absorption ink, the content printed by the infrared excitation ink emits visible light after being irradiated by infrared light and can be observed by naked eyes, the infrared absorption ink is also invisible after being irradiated by the infrared light, and the printed information can be seen only through special equipment.
The application of near-infrared absorbing materials to invisible inks has been disclosed in many documents, but most of infrared absorbing materials are easy to counterfeit, and counterfeiters can easily prepare invisible inks by themselves using infrared absorbing materials which are easily purchased in the market, thus causing considerable harm to the production of genuine products.
The digital anti-counterfeiting information printed on the electrochemical aluminum can be used for conventional anti-counterfeiting, and the anti-counterfeiting information is a two-dimensional code, a bar code or a file which can be seen by naked eyes; the imitation difficulty of the conventional invisible printing ink cannot meet the requirements of customers, so that how to prepare the unique invisible anti-counterfeiting intelligent electrochemical aluminum becomes a technical problem which is urgently needed to be solved at present.
Disclosure of Invention
In order to solve the problems, the application provides invisible intelligent anti-counterfeiting electrochemical aluminum, a preparation method and application thereof.
The first purpose of the application is to provide a preparation method of the invisible intelligent anti-counterfeiting electrochemical aluminum, which utilizes specific steps to form the invisible intelligent anti-counterfeiting electrochemical aluminum, so that the anti-counterfeiting electrochemical aluminum has dominant digital information and invisible special hidden codes, and the anti-counterfeiting effect of the anti-counterfeiting electrochemical aluminum is further ensured.
In order to achieve the first purpose of the present application, the technical solution of the present application is:
the preparation method of the invisible intelligent anti-counterfeiting electrochemical aluminum is characterized by comprising the following steps:
s1, selecting a PET film with the thickness of 10-30 microns, and obtaining a base film layer with a dyne value of at least 38 after corona treatment;
s2, sequentially coating a release coating and a holographic information coating on the PET by using a roll-to-roll coating machine on the base film layer, and drying to form a release layer and a holographic information layer;
s3, embossing and gravure-printing protective ink on the PET film coated with the release layer and the holographic information layer by using a mould pressing-gravure press, wherein the mould pressing plate uses a nickel plate to convert the planar holographic information layer into the PET film with the mould pressing laser holographic information layer;
s4, using a vacuum aluminum plating machine to perform vacuum evaporation plating on a metal layer on the laser holographic information layer of the PET film to form an aluminum plated layer;
s5, washing the aluminum layer on the area, which is not covered with the gravure printing protection ink, of the PET film by using an aluminum washing machine to form a hollow aluminum plated layer;
s6, printing a graphic information layer on the hollow aluminum plating layer of the PET film by using a traditional printer or a digital printer;
s7, coating a hot melt adhesive coating containing a characteristic spectrum absorber on the image-text information layer of the PET film by using a coating machine to form a hot melt adhesive layer with characteristic spectrum absorption;
and S8, cutting to form the invisible intelligent anti-counterfeiting electrochemical device.
Further, in step S2, the dry coating amount of the release layer is 0.8 to 1.0g/m 2 The mesh roller is 200 mesh anilox roller, and the drying temperature is 80-120-170-170-130 ℃.
Further, in step S2, the holographic information coating is an acrylate coating, and the dry coating amount is 1.2-1.4g/m 2 The drying temperature is 80-100-130-160-160-100 ℃, and the coating speed is 80m/min.
Further, in step S3, the molding temperature is 150-190 ℃ and the vehicle speed is 30-50m/min.
Further, in step S4, the thickness of the aluminum plating layer is 300-500 angstroms.
Further, in step S7, the characteristic spectrum absorber is a derivative containing a double-layer phthalocyanine.
Furthermore, the characteristic spectrum absorber adopts double-layer copper phthalocyanine with benzo crown ether disubstituted group, the adding amount is 3% -10%, and the dry coating amount of the hot melt adhesive is 1.4-1.6g/m 2 The drying temperature is 80-100-130-140-140-100 ℃, and the coating speed is 80m/min.
Furthermore, the hot stamping temperature of the hidden intelligent anti-counterfeiting electric aluminum for hot stamping on the packing material is 100-250 ℃.
The second purpose of this application is to provide stealthy intelligent anti-fake electrochemical aluminium, through arranging explicit digital information and stealthy specific hidden code on electrochemical aluminium for only can confirm the true and false of anti-fake code through the intelligent product scanning inquiry true and false and purpose-made intelligent recognizer confirm the combined action of true and false through cell-phone etc..
In order to achieve the second objective of the present application, the technical solution of the present application is:
the invisible intelligent anti-counterfeiting electrochemical aluminum adopts the preparation method, the invisible intelligent anti-counterfeiting electrochemical aluminum comprises a data information layer, the data information layer is divided into a digital area, a hidden code image area, a verification code area, a two-dimensional code printed in the digital area, bar code digital information, a hidden code encryption pattern printed in the hidden code image area, a verification code printed in the verification code area, the verification code comprises customer product information or prompts for anti-counterfeiting information, the digital information, the hidden code encryption pattern and the verification code are mutually associated, the two sides of the data information layer are provided with the aluminum plating layer, the upper ends of the data information layer and the aluminum plating layer are provided with the holographic laser layer, the upper end of the holographic laser layer is provided with the release layer, the upper end of the release layer is provided with the base film layer, and the lower end of the data information layer is provided with the back glue layer.
The third purpose of this application is to provide stealthy intelligent anti-fake electrochemical aluminium's application method, with stealthy intelligent anti-fake electrochemical aluminium printing on the packing material for the packing material possesses anti-fake effect, and then makes the product possess anti-fake effect.
In order to achieve the third objective of the present application, the technical solution of the present application is:
the application method of the invisible intelligent anti-counterfeiting electrochemical aluminum has the advantages that the invisible intelligent anti-counterfeiting electrochemical aluminum is hot-stamped on a package, and the hot-stamping temperature is 100-250 ℃.
Compared with the prior art, the beneficial effect of this application is:
1. the utility model provides an anti-fake electrochemical aluminium of recessive intelligence can carry out the thermoprint on wrappage such as card paper, metal, plastics, the thermoprint pattern is clear, antifriction, the anti-fake electrochemical aluminium of recessive intelligence has the digital information of dominance and stealthy hidden sign indicating number, through arranging the digital information of dominance and stealthy specific hidden sign indicating number on electrochemical aluminium for only can confirm the true and false of anti-fake sign indicating number through the combined action that intelligent products such as cell-phones scan inquiry true and false and purpose-made intelligent recognition ware confirm the true and false.
2. After the invisible intelligent anti-counterfeiting electric aluminum hot stamping, the printed two-dimensional code information is scanned by using a mobile phone, the identification speed is high, the characteristic spectrum absorber does not influence the scanning identification of the two-dimensional code information, the handheld intelligent signal identifier is not influenced by a gold stamping substrate, only responds to the characteristic spectrum absorber, does not respond to other infrared absorption materials, and does not generate false response.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic view of the internal structure of the present application.
In the figure:
1.2, a release layer, 3, a holographic laser layer, 4, an aluminum coating layer, 5, a data information layer, 6 and a back glue layer.
The specific implementation mode is as follows:
the present application is further described with reference to the following drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present disclosure, do not refer to any components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
Example 1
The embodiment is a recessive intelligent anti-counterfeiting electrochemical aluminum, which takes a back adhesive layer 6 as a base, the back adhesive layer 6 is a dried polyurethane coating, so that the hidden code anti-counterfeiting information electrochemical aluminum can be pasted on a product, more specifically, the core layer of the embodiment is a data information layer 5, aluminum-plated layers 4 are arranged on two sides of the data information layer 5, holographic laser layers 3 are arranged at the upper ends of the data information layer 5 and the aluminum-plated layers 4, a release layer 2 is arranged at the upper end of the holographic laser layer 3, a base film layer 1 is arranged at the upper end of the release layer 2, and the back adhesive layer 6 is arranged at the lower end of the data information layer 5, in the embodiment, the base film layer 1 is a polyester film, the thickness of the base film layer 1 is 10-30um, for example, the thickness of the base film layer 1 is 1698, the PET film reaches more than 38 dyne value after corona treatment, and the base film layer 1 is made of organic silicon resin, the holographic laser layer 3 is thermoplastic acrylate paint, a hollow area is arranged in the middle of the aluminum-plated layer 4, the data information layer 5 is located in the hollow area of the aluminum-plated layer 4, metal aluminum is evaporated under a vacuum condition and aluminum washing is carried out to form the hollow area, the data information layer 5 is divided into a digital area, a hidden code image area and a verification code area, two-dimensional codes and bar code digital information are printed in the digital area, a hidden code encryption pattern is printed in the hidden code image area, a verification code is printed in the verification code area, the verification code comprises customer product information or prompt of anti-counterfeiting information, the digital information, the hidden code encryption pattern and the verification code are mutually associated, the data information layer 5 is printed by a variable data printing machine, and particularly, the variable data printing machine comprises a Hewlett-packard digital printing machine and a square and regular code spraying printing machine.
As an application method of the invisible intelligent anti-counterfeiting electrochemical aluminum, the invisible intelligent anti-counterfeiting electrochemical aluminum is adopted in the embodiment, and the invisible intelligent anti-counterfeiting electrochemical aluminum is hot-stamped on a package at the hot-stamping temperature of 100-250 ℃.
Example 2
To the above hidden intelligent anti-counterfeiting electrochemical aluminum, the embodiment discloses a preparation method of the hidden intelligent anti-counterfeiting electrochemical aluminum, which comprises the following steps:
s1, selecting a PET film with the thickness of 10-30 microns, and obtaining a base film layer 1 by using corona treatment to obtain a value of at least 38 dynes;
s2, sequentially coating a release coating and a holographic information coating on the PET by using a roll-to-roll coating machine on the base film layer 1, and drying to form a release layer 2 and a holographic information layer;
s3, embossing and gravure printing protective ink on the PET film coated with the release layer 2 and the holographic information layer by using a mould pressing-gravure press, wherein the mould pressing plate uses a nickel plate to convert the planar holographic information layer into the PET film with the mould pressing laser holographic information layer, and the laser holographic information layer is also a holographic laser layer 3;
s4, using a vacuum aluminum plating machine to perform vacuum evaporation plating on a metal layer on the laser holographic information layer of the PET film to form an aluminum plated layer 4;
s5, washing the aluminum layer on the PET film in the area not covered with the gravure printing protection ink by using an aluminum washing machine to form a hollow aluminum-plated layer 4;
s6, printing a graphic information layer on the hollow aluminum-plated PET film layer 4 by using a traditional printer or a digital printer;
s7, coating a hot melt adhesive coating containing a characteristic spectrum absorber on the image-text information layer of the PET film by using a coating machine to form a hot melt adhesive layer with characteristic spectrum absorption;
and S8, cutting to form the invisible intelligent anti-counterfeiting electrochemical device.
In step S2, the dry coating amount of the release layer is 0.8 to 1.0g/m 2 The mesh roller is 200 mesh anilox roller, the drying temperature is 80-120-170-170-130 ℃, the drying temperature is the temperature of the drying tunnel, and the drying tunnel is long, so the temperature in the drying tunnel is arranged in a ladder way, namely the drying temperature of the drying tunnel is changed from the head end to the tail end of the drying tunnel to 80-120-170-170-130 ℃.
In step S2, the holographic information coating is an acrylate coating, and the dry coating amount is 1.2-1.4g/m 2 The drying temperature is 80-100-130-160-160-100 ℃, the coating speed is 80m/min, the drying temperature is the temperature of the drying tunnel, and the drying tunnel is long, so the temperature in the drying tunnel is arranged in a ladder way, namely the drying temperature of the drying tunnel is changed from the head end to the tail end of the drying tunnel to 80-100-130-160-160-100 ℃.
In step S3, the mold pressing temperature is 150-190 ℃, and the vehicle speed is 30-50m/min.
In step S4, the aluminum plating layer has a thickness of 300-500 angstroms.
In step S7, the characteristic spectral absorber is a derivative containing a double-layered phthalocyanine, which has weak absorption in the visible region and strong absorption in the near-infrared wavelength region. The phthalocyanine is a macrocyclic structure with 18 pi electron conjugation, and benzene rings around the phthalocyanine ring can be substituted by different substituents, and can also be subjected to conjugated substitution to enable the absorption region of the phthalocyanine to be red-shifted. After the phthalocyanine is formed into the double-layer metal derivative, the phthalocyanine has strong absorption in a near infrared wavelength region, and particularly for the phthalocyanine derivative with a specific substituent, a near infrared absorption characteristic peak is clear. For the recessive intelligent anti-counterfeiting electrochemical aluminum of a specific company, different phthalocyanine derivatives can be used for preparation, and different characteristic signal identifiers are correspondingly used for obtaining unique characteristic effects. The double-layer metal phthalocyanine derivative has stable physical and chemical properties and is an ideal infrared absorption dye. Crown ether substituent groups with different carbon atoms generate phthalocyanine which has strong absorption in a near infrared region, the crown ether substituted phthalocyanine derivative is added into a hot melt adhesive coating and coated on the alumite to obtain the recessive intelligent anti-counterfeiting alumite, the substituent groups contained on the monomer of the double-layer phthalocyanine comprise benzo crown ether, benzene and nitrobenzene, axial coordination can be formed on the phthalocyanine, the ligands comprise imidazole ligands, sulfide ligands and fullerene modified ligands, and the benzo crown ether comprises benzo 15 crown and benzo 18 crown 6.
The characteristic spectrum absorber adopts double-layer copper phthalocyanine with benzo crown ether double-substituent, the adding amount is 3% -10%, for example, the adding amount can be 5%, the hot melt adhesive dry coating amount is 1.4-1.6g/m 2 The drying temperature is 80-100-130-140-140-100 ℃, the coating speed is 80m/min, and the characteristic spectrum absorber is preferably modified by graphene.
In step 1, a 20 μm thick and 1500mm wide PET film is selected, corona treatment is performed to obtain a 40 dyne value, a PET base film is obtained, and in step 8, recessive intelligent anti-counterfeiting electrochemical aluminum with a width of 45mm is obtained by slitting.
In addition, the characteristic spectrum absorber adopts double-substituent double-layer copper phthalocyanine of nitrophenyl, the addition amount is 7%, and the recessive intelligent anti-counterfeiting electrochemical aluminum meeting the requirements is obtained.
The embodiment can also be provided with a comparison embodiment group, the comparison embodiment is prepared basically according to the steps S1-S7 of the embodiment 2, the difference is that the used characteristic spectrum absorber adopts commercially available infrared absorption ink, the infrared absorption ink is added according to the use requirement to obtain red comparison group electrochemical aluminum, when the temperature is 120 ℃ and the pressure is 0.2MPa, the electrochemical aluminum materials prepared in the comparison embodiment and the embodiment are hot-stamped on the paperboard, the hot stamping time is 0.7S, the pattern is complete after the hot stamping and is cut orderly, the two-dimensional code after the scanning hot stamping is used for jumping to a corresponding verification interface, the response is quick, a dealer scans an identification area by using a special hidden handheld terminal intelligent identifier, the identifier identifies and sends out a corresponding genuine product signal prompt, the comparison group electrochemical aluminum obtained in the comparison embodiment is used for hot stamping, a special hidden handheld terminal intelligent identifier is used for scanning the identification area after the hot stamping, the identifier identifies and sends out a corresponding suspected imitation signal prompt.
The hot stamping temperature for hot stamping the hidden intelligent anti-counterfeiting electrochemical aluminum on the packing material is 100-250 ℃.
A hidden intelligent anti-counterfeiting method for a handheld terminal comprises the steps of thermoprinting electrochemical aluminum on a product, irradiating an identification area with a characteristic spectrum absorber on the product by using infrared light with the wavelength of 750nm-1500nm, detecting by using an intelligent spectrum detector with an optical filter, and outputting a specific acousto-optic-electric signal to perform anti-counterfeiting prompt when a specific signal of the characteristic spectrum absorber is detected.
The information intelligent anti-counterfeiting method of the explicit mobile intelligent terminal comprises the following steps: and the mobile intelligent terminal is used for carrying out image acquisition identification or optical signal identification on the digital information area, carrying out transcoding identification on the digital information or the spectrum information and then outputting a corresponding acousto-optic-electric signal.
The characteristic spectrum absorber is used for recessive handheld terminal intelligent anti-counterfeiting, and the handheld terminal refers to a handheld intelligent characteristic signal recognizer.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the specific embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood that those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application.
Claims (10)
1. The preparation method of the invisible intelligent anti-counterfeiting electrochemical aluminum is characterized by comprising the following steps:
s1, selecting a PET film with the thickness of 10-30 mu m, and obtaining a base film layer (1) by using corona treatment to obtain a value of at least 38 dyne;
s2, sequentially coating a release coating and a holographic information coating on the PET by using a roll-to-roll coating machine on the base film layer (1), and drying to form a release layer (2) and a holographic information layer;
s3, embossing and gravure printing protective ink on the PET film coated with the release layer (2) and the holographic information layer by using a mould pressing-gravure press, wherein the mould pressing plate uses a nickel plate to convert the planar holographic information layer into the PET film with the mould pressing laser holographic information layer;
s4, using a vacuum aluminum plating machine to perform vacuum evaporation plating on a metal layer on the laser holographic information layer of the PET film to form an aluminum plating layer (4);
s5, washing the aluminum layer on the PET film in the area not covered with the gravure printing protection ink by using an aluminum washing machine to form a hollow aluminum-plated layer (4);
s6, printing a picture and text information layer on the hollow aluminum plating layer (4) of the PET film by using a traditional printer or a digital printer;
s7, coating a hot melt adhesive coating containing a characteristic spectrum absorber on the image-text information layer of the PET film by using a coating machine to form a hot melt adhesive layer with characteristic spectrum absorption;
and S8, cutting to form the invisible intelligent anti-counterfeiting electrochemical device.
2. The method for preparing the electrochemical aluminum with invisible intelligent anti-counterfeiting function according to claim 1, wherein in the step S2, the dry coating amount of the release layer (2) is 0.8-1.0g/m 2 The net roller uses a 200-mesh anilox roller, and the drying temperature from the head end to the tail end in the drying tunnel is changed into: 80-120-170-170-130 ℃.
3. The method for preparing the electrochemical aluminum with invisible intelligent anti-counterfeiting function according to claim 1, wherein in the step S2, the holographic information coating is an acrylate coating, and the dry coating amount is 1.2-1.4g/m 2 And the drying temperature from the head end to the tail end in the drying tunnel is changed into: 80-100-130-160-160-100 ℃, and the coating speed is 80m/min.
4. The method for preparing the invisible intelligent anti-counterfeiting electrochemical aluminum according to claim 1, wherein in the step S3, the mold pressing temperature is 150-190 ℃ and the vehicle speed is 30-50m/min.
5. The preparation method of the electrochemical aluminum for invisible intelligent anti-counterfeiting according to claim 1, wherein in the step S4, the thickness of the aluminum plating layer (4) is 300-500 angstroms.
6. The method for preparing electrochemical aluminum with invisible intelligent anti-counterfeiting function according to claim 1, wherein in step S7, the characteristic spectrum absorber is a derivative containing double-layer phthalocyanine.
7. The method for preparing the electrochemical aluminum with the invisible intelligent anti-counterfeiting function according to claim 6, wherein the characteristic spectrum absorber adopts double-layer copper phthalocyanine with benzo crown ether disubstituted, the addition amount is 3-10%, and the dry coating amount of the hot melt adhesive is 1.4-1.6g/m 2 The drying temperature is 80-100-130-140-140-100 ℃, and the coating speed is 80m/min.
8. The preparation method of the invisible intelligent anti-counterfeiting electrochemical aluminum as claimed in claim 1, wherein the stamping temperature of the invisible intelligent anti-counterfeiting electrochemical aluminum for stamping on the package is 100-250 ℃.
9. The invisible intelligent anti-counterfeiting electric aluminum is characterized by being prepared by the preparation method of the invisible intelligent anti-counterfeiting electric aluminum according to any one of claims 1 to 8, and comprising a data information layer (5), wherein the data information layer (5) is divided into a digital area, a hidden code image area and a verification code area, two-dimensional codes and bar code digital information are printed in the digital area, a hidden code encryption pattern is printed in the hidden code image area, a verification code is printed in the verification code area, the verification code comprises customer product information or a prompt for anti-counterfeiting information, and the digital information, the hidden code encryption pattern and the verification code are mutually associated;
the data information layer (5) both sides are provided with aluminized layer (4), and data information layer (5) and aluminized layer (4) upper end are provided with holographic laser layer (3), and holographic laser layer (3) upper end is provided with from type layer (2), is provided with base film layer (1) from type layer (2) upper end, and data information layer (5) lower extreme is provided with gum layer (6).
10. The application method of the invisible intelligent anti-counterfeiting electrochemical aluminum is characterized in that the invisible intelligent anti-counterfeiting electrochemical aluminum is adopted according to claim 9, and is hot-stamped on a package at the temperature of 100-250 ℃.
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| CN116198244A (en) * | 2023-02-23 | 2023-06-02 | 扬州市祥华新材料科技有限公司 | Anti-counterfeiting electrochemical aluminum hot stamping foil and preparation method thereof |
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