CN114067664A - Color-changing anti-counterfeit label - Google Patents
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- CN114067664A CN114067664A CN202111214239.5A CN202111214239A CN114067664A CN 114067664 A CN114067664 A CN 114067664A CN 202111214239 A CN202111214239 A CN 202111214239A CN 114067664 A CN114067664 A CN 114067664A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0294—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time where the change is not permanent, e.g. labels only readable under a special light, temperature indicating labels and the like
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/04—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps to be fastened or secured by the material of the label itself, e.g. by thermo-adhesion
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0208—Indicia
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0257—Multilayer
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Abstract
本发明公开了一种色变防伪标签，属于防伪标签技术领域。该防伪标签由上往下依次设置有透明保护层、温变油墨层、防伪信息层、易碎层、基层、粘结层和离型纸层；所述的防伪信息印刷在防伪信息层，所述的温变油墨层采用可逆变的温变油墨印刷，温变油墨层覆盖住防伪信息层，防伪信息不可视，高温检测时温变油墨由深色变为透明。本发明公开的色变防伪标签设置有多种防伪方式，能够实现充分的防伪，并且具有粘贴后不能从商品上完整剥离、不可再利用的特点，进一步增强了本发明的防伪标签的防伪性能。
The invention discloses a color-changing anti-counterfeiting label, which belongs to the technical field of anti-counterfeiting labels. The anti-counterfeiting label is sequentially provided with a transparent protective layer, a temperature-changing ink layer, an anti-counterfeiting information layer, a fragile layer, a base layer, an adhesive layer and a release paper layer from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer, so The temperature-changing ink layer is printed with reversible temperature-changing ink, the temperature-changing ink layer covers the anti-counterfeiting information layer, and the anti-counterfeiting information is invisible, and the temperature-changing ink changes from dark color to transparent during high temperature detection. The color-changing anti-counterfeiting label disclosed in the present invention is provided with various anti-counterfeiting methods, which can realize sufficient anti-counterfeiting, and has the characteristics that it cannot be completely peeled off from the commodity and cannot be reused after pasting, which further enhances the anti-counterfeiting performance of the anti-counterfeiting label of the present invention.
Description
Technical Field
The invention relates to the technical field of anti-counterfeit labels, in particular to a color-changing anti-counterfeit label.
Background
Counterfeit products are an important challenge for all known brands, and the copying or secondary recycling of anti-counterfeiting information in the products is an important way for counterfeiting. In order to protect the brand of an enterprise and attack and prevent counterfeit commodities, the enterprise often adopts an anti-counterfeit label.
The anti-counterfeiting label is a mark which can be glued, printed and transferred on the surface of a target object, package or accessories (such as a commodity hanging plate, a business card and an anti-counterfeiting certificate card) and has an anti-counterfeiting function. The anti-counterfeit label can help consumers to rapidly identify the authenticity of the commodity in each industry, protect consumers' rights and interests, help enterprises to strike counterfeit products, stop batch counterfeiting, protect enterprise brands and avoid economic loss.
However, most of anti-counterfeit labels on various product packages at present have few anti-counterfeit means, simple anti-counterfeit function and poor performance of preventing secondary transfer, and the anti-counterfeit labels can be integrally transferred after being heated by a blower, so that the anti-counterfeit labels are easy to transfer, and the economic benefit of manufacturers is greatly influenced.
Therefore, how to provide an anti-counterfeit label with good anti-counterfeit effect is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides the color-changing anti-counterfeit label which has the advantages of reasonable structural design, convenience in use, good anti-counterfeit effect and high reliability.
In order to achieve the purpose, the invention adopts the following technical scheme:
a color change anti-counterfeiting label is sequentially provided with a transparent protective layer, a temperature change ink layer, an anti-counterfeiting information layer, a fragile layer, a base layer, an adhesive layer and a release paper layer from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer, the temperature change ink layer is printed by reversible temperature change ink, the temperature change ink layer covers the anti-counterfeiting information layer, the anti-counterfeiting information is invisible, and the temperature change ink is changed into transparent from deep color during high-temperature detection.
Adopt above-mentioned technical scheme's beneficial effect: according to the invention, the temperature-change ink layer is printed above the anti-counterfeiting information layer, the temperature-change ink is dark at normal temperature, the anti-counterfeiting information is invisible, and the ink can be changed into transparent ink to display the anti-counterfeiting information through high-temperature test when a consumer needs to verify the anti-counterfeiting.
Meanwhile, the anti-counterfeiting label is also provided with the fragile layer, when a lawbreaker tries to remove the anti-counterfeiting label by adopting an electric blower heating mode, the fragile layer is easy to damage and difficult to recover, and the fragile layer can not be removed and then attached to the original place or the surface of a fake and counterfeit product again, so that the anti-counterfeiting label plays a role in breaking and anti-counterfeiting.
Preferably, the anti-counterfeiting information in the anti-counterfeiting information layer comprises anti-counterfeiting printing information, an RFID electronic chip, a fluorescent fiber anti-counterfeiting ring and a colorless fluorescent anti-counterfeiting strip.
Adopt above-mentioned technical scheme's beneficial effect: the RFID electronic chip is provided with the unique electronic code, and is convenient to read through an RFID reader, so that the anti-counterfeiting label cannot be imitated, the colorless fluorescent anti-counterfeiting strip is made of colorless fluorescent ink in a printing mode, no information can be seen from the surface, and fluorescent invisible information can appear after the fluorescent lamp irradiates. The fluorescent fiber anti-counterfeiting ring has visual characteristics of different colors under ultraviolet light, can observe a ring formed by multiple colors, is a physical fiber, can be picked out by a needle, and is different from a printed fiber.
Preferably, the diameter of the fluorescent fiber anti-counterfeiting ring is 2-5mm, the width of the ring filament is 0.1-0.2mm, the thickness of the fluorescent fiber anti-counterfeiting ring is 10-30 μm, the fluorescent fiber anti-counterfeiting ring is composed of a plurality of parts with different color visual characteristics under ultraviolet light, and the fluorescent fiber anti-counterfeiting ring is colorless or multicolor under natural light.
Preferably, the anti-counterfeiting printing information is one or more of characters, anti-counterfeiting patterns, two-dimensional codes or bar codes.
Preferably, a laser layer is arranged between the transparent protective layer and the temperature change ink layer, the laser layer is laser paper, a laser film, a laser resin layer or a laser gurley layer, the laser layer is provided with a hollowed-out area corresponding to the anti-counterfeiting information position on the anti-counterfeiting information layer, and the hollowed-out area can avoid shielding the anti-counterfeiting information and guarantee the anti-counterfeiting effect.
The laser layer has the irreproducibility, different visual effects are generated by the light refraction by utilizing the photosensitive characteristic of the laser material, so that false labels generated by printing and color printing can be eliminated, and the resolution of the anti-counterfeit labels is effectively improved.
Preferably, the fragile layer is made of fragile paper or flexible ceramic and is provided with a plurality of cracks, and the cracks enable the label not to be completely uncovered during secondary transfer, so that the commodity is further guaranteed to be a genuine product.
Preferably, the temperature change ink comprises the following raw materials in parts by weight: 90-110 parts of polyvinyl butyral resin emulsion, 15-25 parts of microcapsule temperature-change powder, 10-20 parts of m-xylylenediamine, 8-10 parts of azopropulene, 1-3 parts of hindered amine light stabilizer, 6-8 parts of propionamide copolymer solution, 4-6 parts of organic modified polysiloxane and 4-6 parts of natural grease.
Preferably, the temperature-change pigment is selected from temperature-change pigments with a temperature change value of 50-80 ℃, and the temperature-change pigment is in color when the temperature-change value is lower than the temperature change value and gradually turns colorless with the temperature rise from the temperature change value.
Preferably, the transparent protective layer is a non-release transparent protective film layer made of PET, PEN, PC, PP, BOPP, OPP, PVC or PI materials.
Through the technical scheme, compared with the prior art, the color change anti-counterfeiting label is disclosed and provided. When the consumer needs to verify the authenticity of the commodity, the following method can be used:
1. identifying authenticity by whether fluorescent invisible information exists or not through fluorescent lamp irradiation;
2. whether a fluorescent fiber ring exists or not is identified through the irradiation of an ultraviolet lamp;
3. identifying authenticity by scanning or inquiring the anti-counterfeiting printing information;
4. the authenticity is identified by heating and observing whether anti-counterfeiting information is exposed by using high-temperature heating equipment such as a blower and the like;
5. the authenticity is identified through the color reflected by the laser layer.
The color-changing anti-counterfeiting label disclosed by the invention is provided with multiple anti-counterfeiting modes, and can realize sufficient anti-counterfeiting. The anti-counterfeiting label has the characteristics of being incapable of being completely peeled off from a commodity after being pasted and being recycled, and further enhances the anti-counterfeiting performance of the anti-counterfeiting label.
The layers can be connected together by bonding, printing, hot melting and other modes, the bonding liquid can be selected from water glue, oil glue, non-setting adhesive, UV glue, gloss oil and the like, and the bonding liquid is solidified by a hot curing or ultraviolet curing mode to form the bonding layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a color-change anti-counterfeit label provided in embodiment 1 of the present invention;
fig. 2 is a schematic view of a color-change anti-counterfeit label provided in embodiments 2 to 3 of the present invention;
in fig. 1:
1-a transparent protective layer; 2-temperature change ink layer; 3-anti-counterfeiting information layer; 4-a frangible layer; 5-a base layer; 6-a bonding layer; 7-a release paper layer;
in fig. 2:
1-a transparent protective layer; 2-laser layer; 3-temperature change ink layer; 4-anti-counterfeiting information layer; 5-a frangible layer; 6-a base layer; 7-a tie layer; 8-release paper layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the invention provides a color-changing anti-counterfeit label, which is sequentially provided with a transparent protective layer 1, a temperature-changing ink layer 2, an anti-counterfeit information layer 3, a fragile layer 4, a base layer 5, an adhesive layer 6 and a release paper layer 7 from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer 3, the temperature change ink layer 2 is printed by reversible temperature change ink, the temperature change ink layer covers the anti-counterfeiting information layer 3, the anti-counterfeiting information is invisible, and the temperature change ink is changed from deep color to transparent color during high-temperature detection;
the anti-counterfeiting information in the anti-counterfeiting information layer 3 comprises anti-counterfeiting printing information, an RFID electronic chip, a fluorescent fiber anti-counterfeiting ring and a colorless fluorescent anti-counterfeiting strip;
the ring diameter of the fluorescent fiber anti-counterfeiting ring is 3mm, the width of the ring filament is 0.1mm, the thickness is 10 μm, the fluorescent fiber anti-counterfeiting ring consists of a plurality of parts with different color visual characteristics under ultraviolet light, and the fluorescent fiber anti-counterfeiting ring is colorless or multicolor under natural light;
the anti-counterfeiting printing information is a variable two-dimensional code;
the fragile layer 4 is made of fragile paper and is provided with a plurality of cracks;
the temperature change ink comprises the following raw materials in parts by weight: 100 parts of polyvinyl butyral resin emulsion, 20 parts of microcapsule temperature-change powder, 15 parts of m-xylylenediamine, 9 parts of azoproylene, 2 parts of hindered amine light stabilizer, 7 parts of propionamide copolymer solution, 5 parts of organic modified polysiloxane and 5 parts of natural oil.
The temperature change pigment is black organic heat-sensitive temperature change pigment with the temperature change value of 60 ℃, is black when being lower than the temperature change value, and gradually changes into colorless along with the temperature rise from the temperature change value;
the preparation method of the temperature-change ink comprises the following steps: uniformly mixing the microcapsule temperature change powder and the polyvinyl butyral resin emulsion according to a proportion, adding the nitrogen-propylene ingot, stirring for 10min at a constant temperature of 35 ℃, adding the rest components, and stirring for 10 min;
the transparent protective layer is a non-release transparent protective film layer made of BOPP materials.
Example 2
As shown in fig. 2, the invention provides a color-changing anti-counterfeit label, which is sequentially provided with a transparent protective layer 1, a laser layer 2, a temperature-changing ink layer 3, an anti-counterfeit information layer 4, a fragile layer 5, a base layer 6, an adhesive layer 7 and a release paper layer 8 from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer 4, the temperature change ink layer 3 is printed by reversible temperature change ink, the temperature change ink layer covers the anti-counterfeiting information layer 4, the anti-counterfeiting information is invisible, and the temperature change ink is changed from deep color to transparent color during high-temperature detection;
the anti-counterfeiting information in the anti-counterfeiting information layer 4 comprises anti-counterfeiting printing information, an RFID electronic chip, a fluorescent fiber anti-counterfeiting ring and a colorless fluorescent anti-counterfeiting strip;
the ring diameter of the fluorescent fiber anti-counterfeiting ring is 5mm, the width of the ring filament is 0.2mm, the thickness is 20 μm, the fluorescent fiber anti-counterfeiting ring consists of a plurality of parts with different color visual characteristics under ultraviolet light, and the fluorescent fiber anti-counterfeiting ring is colorless or multicolor under natural light;
the anti-counterfeiting printing information is a bar code;
the laser layer 2 is a laser resin layer, and a hollow area is arranged at the position, corresponding to the anti-counterfeiting information, on the anti-counterfeiting information layer 4 on the laser layer 2;
the fragile layer 5 is made of flexible ceramics and is provided with a plurality of cracks;
the temperature change ink comprises the following raw materials in parts by weight: 90 parts of polyvinyl butyral resin emulsion, 25 parts of microcapsule temperature change powder, 15 parts of m-xylylenediamine, 10 parts of N-propylidene, 3 parts of hindered amine light stabilizer, 6 parts of propionamide copolymer solution, 4 parts of organic modified polysiloxane and 6 parts of natural grease;
the temperature change pigment is a deep blue organic heat-sensitive temperature change pigment with a temperature change value of 70 ℃, the temperature change pigment is deep blue when the temperature change value is lower than the temperature change value, and the temperature change pigment gradually changes into colorless along with the temperature rise from the temperature change value;
the preparation method of the temperature-change ink comprises the following steps: uniformly mixing the microcapsule temperature change powder and the polyvinyl butyral resin emulsion according to a proportion, adding the nitrogen-propylene ingot, stirring for 10min at a constant temperature of 35 ℃, adding the rest components, and stirring for 10 min;
the transparent protective layer is a non-release transparent protective film layer made of OPP materials.
Example 3
As shown in fig. 2, the invention provides a color-changing anti-counterfeit label, which is sequentially provided with a transparent protective layer 1, a laser layer 2, a temperature-changing ink layer 3, an anti-counterfeit information layer 4, a fragile layer 5, a base layer 6, an adhesive layer 7 and a release paper layer 8 from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer 4, the temperature change ink layer 3 is printed by reversible temperature change ink, the temperature change ink layer covers the anti-counterfeiting information layer 4, the anti-counterfeiting information is invisible, and the temperature change ink is changed from deep color to transparent color during high-temperature detection;
the anti-counterfeiting information in the anti-counterfeiting information layer 4 comprises anti-counterfeiting printing information, an RFID electronic chip, a fluorescent fiber anti-counterfeiting ring and a colorless fluorescent anti-counterfeiting strip;
the diameter of the fluorescent fiber anti-counterfeiting ring is 2mm, the width of the ring filament is 0.1mm, the thickness is 30 μm, the fluorescent fiber anti-counterfeiting ring consists of a plurality of parts with different color visual characteristics under ultraviolet light, and the fluorescent fiber anti-counterfeiting ring is colorless or multicolor under natural light;
the anti-counterfeiting printing information is an anti-counterfeiting pattern of an enterprise trademark;
the laser layer 2 is a laser resin layer, and a hollow area is arranged at the position, corresponding to the anti-counterfeiting information, on the anti-counterfeiting information layer 4 on the laser layer 2;
the fragile layer 5 is made of fragile paper and is provided with a plurality of cracks;
the temperature change ink comprises the following raw materials in parts by weight: 110 parts of polyvinyl butyral resin emulsion, 15 parts of microcapsule temperature-change powder, 20 parts of m-xylylenediamine, 8 parts of azoproylene, 1 part of hindered amine light stabilizer, 8 parts of propionamide copolymer solution, 6 parts of organic modified polysiloxane and 4 parts of natural oil;
the temperature change pigment is golden yellow organic heat-sensitive temperature change pigment with the temperature change value of 80 ℃, is golden yellow when being lower than the temperature change value, and gradually turns into colorless along with the temperature rise from the temperature change value;
the preparation method of the temperature-change ink comprises the following steps: uniformly mixing the microcapsule temperature change powder and the polyvinyl butyral resin emulsion according to a proportion, adding the nitrogen-propylene ingot, stirring for 10min at a constant temperature of 35 ℃, adding the rest components, and stirring for 10 min;
the transparent protective layer is a PET non-release transparent protective film layer.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The color-changing anti-counterfeiting label is characterized in that a transparent protective layer, a temperature-changing ink layer, an anti-counterfeiting information layer, a fragile layer, a base layer, an adhesive layer and a release paper layer are sequentially arranged from top to bottom; the anti-counterfeiting information is printed on the anti-counterfeiting information layer, the temperature change ink layer is printed by reversible temperature change ink, the temperature change ink layer covers the anti-counterfeiting information layer, the anti-counterfeiting information is invisible, and the temperature change ink is changed into transparent from deep color during high-temperature detection.
2. The color-changing anti-counterfeiting label according to claim 1, wherein the anti-counterfeiting information in the anti-counterfeiting information layer comprises anti-counterfeiting printing information, an RFID electronic chip, a fluorescent fiber anti-counterfeiting ring and a colorless fluorescent anti-counterfeiting strip.
3. The color-changing security label according to claim 2, wherein the fluorescent fiber security ring has a ring diameter of 2-5mm, a ring filament width of 0.1-0.2mm, and a thickness of 10-30 μm, and is composed of a plurality of portions having different color visual characteristics under ultraviolet light, and is colorless or multicolor under natural light.
4. The color-changing anti-counterfeiting label according to claim 2, wherein the anti-counterfeiting printing information is one or more of characters, anti-counterfeiting patterns, two-dimensional codes or bar codes.
5. The color-changing anti-counterfeiting label according to claim 2, wherein a laser layer is arranged between the transparent protection layer and the temperature-changing ink layer, the laser layer is laser paper, a laser film, a laser resin layer or a laser gurley layer, and the laser layer is provided with a hollowed-out area corresponding to the anti-counterfeiting information position on the anti-counterfeiting information layer.
6. The color-changing anti-counterfeiting label according to claim 1, wherein the fragile layer is made of fragile paper or flexible ceramic and is provided with a plurality of cracks.
7. The color-changing anti-counterfeiting label according to claim 1, wherein the temperature-changing ink comprises the following raw materials in parts by weight: 90-110 parts of polyvinyl butyral resin emulsion, 15-25 parts of microcapsule temperature-change powder, 10-20 parts of m-xylylenediamine, 8-10 parts of azopropulene, 1-3 parts of hindered amine light stabilizer, 6-8 parts of propionamide copolymer solution, 4-6 parts of organic modified polysiloxane and 4-6 parts of natural grease.
8. The color-change anti-counterfeit label according to claim 7, wherein the temperature-change pigment is selected from temperature-change pigments with a temperature-change value of 50 ℃ to 80 ℃, and the temperature-change pigment is a color of the temperature-change pigment below the temperature-change value and gradually turns colorless with the increase of temperature from the temperature-change value.
9. The color-changing anti-counterfeit label according to claim 1, wherein the transparent protective layer is a non-release transparent protective film layer made of PET, PEN, PC, PP, BOPP, OPP, PVC or PI.
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| CN202111214239.5A CN114067664A (en) | 2021-10-19 | 2021-10-19 | Color-changing anti-counterfeit label |
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| CN202111214239.5A CN114067664A (en) | 2021-10-19 | 2021-10-19 | Color-changing anti-counterfeit label |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114863791A (en) * | 2022-04-20 | 2022-08-05 | 中国科学技术大学 | Multiple anti-counterfeit label and preparation method thereof |
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