CN114170888A - Double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed and preparation method thereof - Google Patents
Double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed and preparation method thereof Download PDFInfo
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- CN114170888A CN114170888A CN202111482680.1A CN202111482680A CN114170888A CN 114170888 A CN114170888 A CN 114170888A CN 202111482680 A CN202111482680 A CN 202111482680A CN 114170888 A CN114170888 A CN 114170888A
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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
- G09F3/02—Forms or constructions
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
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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
- G09F3/03—Forms or constructions of security seals
- G09F3/0394—Forms or constructions of security seals with violation indication by generating a random number
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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
- G09F3/08—Fastening or securing by means not forming part of the material of the label itself
- G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
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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
Abstract
The invention provides a double-code double-layer holographic laser transfer-preventing utilization label capable of being collected at high speed, which sequentially comprises a first substrate layer, a holographic laser information surface layer, a two-dimensional code layer, a white ink layer, a first adhesive layer, a first aluminum-plated layer, a second substrate layer, an uncovering adhesive layer, a verification information layer, a second aluminum-plated layer, a holographic laser information sublayer, a non-dry bottom adhesive layer and a release layer from top to bottom; uncovering the removable holographic surface layer of the label above the adhesive layer and the anti-transfer holographic sublayer below the adhesive layer; the label is affixed to the surface of the item and/or its packaging by a non-drying primer layer. After the holographic laser information surface layer is uncovered, the bottom rate of the anti-transfer holographic sublayer can be ensured to be more than 99.5%, the delamination is complete, the sublayer is complete and lossless, and the transfer cannot be complete through a conventional method, so that the label cannot be completely transferred and reused. The detection level of the two-dimensional code is more than B level, and the two-dimensional code can be collected and identified at high speed.
Description
Technical Field
The invention belongs to the technical field of anti-counterfeiting materials, and particularly relates to a double-code double-layer holographic laser anti-transfer utilization label capable of being collected at a high speed and a preparation method thereof.
Background
An anti-counterfeiting film or label with a double-layer holographic laser image is a commonly used anti-counterfeiting material in recent years.
CN203386419U discloses an anti-uncovering type positioning anti-counterfeit label with a double-layer holographic laser image, which comprises a base material (1), a first UV holographic laser coating (2), a second holographic laser coating (3), a plating layer (4), an adhesive layer (5) and base paper (6) which are compounded in sequence from bottom to top, wherein a first holographic laser pattern on the first UV holographic laser coating (2) and a second holographic laser pattern on the second holographic laser coating (3) form an accurate sleeve position; the holographic laser pattern I is a hidden holographic laser pattern, and the holographic laser pattern II is a visible holographic laser pattern; the adhesive layer 5 is a pressure-sensitive adhesive, and the base paper 6 is release paper. Uncovering the backing paper, and attaching the finished label product to an object to be attached, such as a packaging box seal, and the like, wherein the second holographic laser pattern can be seen; and (3) uncovering the base material, wherein the holographic laser pattern I is arranged on the base material, and the third image holographic laser pattern I and the holographic laser pattern II combined image appear on the pasted object. The utility model discloses an increase the anti-fake ability of commodity, the true and false of discernment commodity that makes the customer can be easy.
CN208499172U discloses a double-layer holographic anti-counterfeiting film, which comprises a BOPET (biaxially oriented polyethylene terephthalate) base layer, a composite imaging layer, a coating and a glue layer which are sequentially overlapped from bottom to top, wherein the composite imaging layer comprises a holographic layer A and a holographic layer B which are sequentially arranged from bottom to top, the holographic layer A is formed by die-pressing a holographic anti-counterfeiting pattern A on the imaging layer, and the holographic layer B is formed by die-pressing a holographic anti-counterfeiting pattern B on the imaging layer; and the thickness is moderate, and the copying is not easy. The anti-counterfeiting packaging box comprises a packaging box and the double-layer holographic anti-counterfeiting film, wherein the double-layer holographic anti-counterfeiting film covers the outer surface of the packaging box, the anti-counterfeiting packaging box is strong in anti-counterfeiting performance, and counterfeiters are difficult to copy.
In practice, CN203386419U discloses an anti-uncovering type positioning anti-counterfeiting label with a double-layer holographic laser image, which comprises a base material (1), a UV holographic laser coating I (2), a holographic laser coating II (3), a plating layer (4), an adhesive layer (5) and base paper (6) which are compounded in sequence from bottom to top, wherein a holographic laser pattern I on the UV holographic laser coating I (2) and a holographic laser pattern II on the holographic laser coating II (3) form accurate nesting; the utility model discloses an increase the anti-fake ability of commodity, the true and false of discernment commodity that makes the customer can be easy.
The holographic laser patterns in the technology are repeated due to the limitation of pattern design, version printing and the like, and are not combined with modes of randomly changing two-dimensional codes, verification codes and the like which can be used for true and false query and verification through the Internet, so that consumers of commodities can perform true and false query, verification and traceability through the ways of telephones, official networks, mobile phone APPs and the like. On the other hand, in recent years, it is common to inquire, verify and trace the authenticity of a commodity by means of a two-dimensional code, a verification code and the like, but how to effectively combine the commodity with an anti-counterfeit label with a holographic laser image and obtain other purposes is a technical problem which is not easy to handle.
Disclosure of Invention
In order to solve the technical problems, the invention provides a double-code double-layer holographic laser transfer-prevention utilization label capable of being collected at high speed, which comprises a first substrate layer, a holographic laser information surface layer, a two-dimensional code layer, a white ink layer, a first adhesive layer, a first aluminum-plated layer, a second substrate layer, a uncovering adhesive layer, a verification information layer, a second aluminum-plated layer, a holographic laser information sublayer, a non-dry bottom adhesive layer and a release layer from top to bottom in sequence;
the first substrate layer, the holographic laser information surface layer, the two-dimensional code layer, the white ink layer, the first adhesive layer, the first aluminum-plated layer, the second substrate layer and the uncovering adhesive layer form an uncoverable holographic surface layer of the label; the verification information layer, the second aluminum-plated layer, the holographic laser information sublayer and the non-dry bottom adhesive layer form an anti-transfer holographic sublayer of the label; the label is affixed to the surface of the item and/or its packaging by a primer layer.
The detection grade of the two-dimensional code on the finished label product is preferably more than grade B, so that 100% reading of information of the two-dimensional code can be guaranteed when 1500 labels are collected and identified every minute. The detection standard of the two-dimensional code grade can be ISO/IEC 15415, and the ABCD of the measurement result is reduced step by step; the detection device comprises REA VeriCube. The two-dimensional code comprises a stacked two-dimensional bar code and a matrix two-dimensional code, wherein the two-dimensional code is generally black and rectangular, comprises a square shape and is positioned in the middle of a white ink area, the side length of each white ink blank area on the periphery of the two-dimensional code is not less than 1.20 times of the corresponding side length of the outer edge of the two-dimensional code, and the grade of the two-dimensional code reaches B-grade and A-grade levels through the combination of ink printing blackness, the whiteness of the white ink area, the edge sharpness of a dot line of the two-dimensional code, the size of the two-dimensional code and data digits. The two-dimensional code includes a variable two-dimensional code. The blackness of the two-dimensional code ink mark is higher than 95%, and the whiteness of the white ink area is higher than 90%.
The verification information of the holographic sublayer can be formed by combining one or more of numbers, characters, graphs and images, comprises a combination of randomly generated information and set information, and comprises a verification code formed by combining one or more of numbers, characters and characters; the verification code can be a digital string which is generated by digital conversion software and has the functions of anti-counterfeiting and tracing. The authentication information may be multi-colored and/or single-colored.
The label can reveal the two-dimensional code positioned in the white ink area and the surface layer holographic laser information positioned outside the white ink area from the removable holographic surface layer; and after the holographic surface layer is uncovered, the verification information and the secondary holographic laser information can be seen. After the label is adhered to the surface of a commodity and/or a package thereof through the non-drying bottom glue layer, even if the adhering surface is flat and smooth, the label is difficult to be completely and nondestructively separated through a mode of slightly cutting the non-drying bottom glue through a thin blade, and the transfer and the reutilization of the adhered label are avoided.
The release force values formed by releasing the adhesive layer include: the transverse force is 3 plus or minus 0.5N/25mm, and the peeling strength is 0.002-0.003N/mm. After the holographic surface layer is removed, the anti-migration holographic sublayer is exposed.
The peel force values for the first layer of adhesive and for the layer of adhesive that does not dry after the label is applied to the surface of the item and/or its packaging, include: the transverse force is more than or equal to 5N/25mm, and the peeling strength is more than or equal to 0.005N/mm.
A spot color transparent ink layer can be arranged between the verification information layer and the holographic laser information sublayer, and is printed by adopting a spot color ink and a spot color channel, so that the imitation difficulty is improved, and the holographic laser information effect of the sublayer can be revealed. The spot color means that, at the time of printing, such a color is not synthesized by printing four colors such as C, M, Y, K, but is printed exclusively with a certain "specific ink" which is specific to a certain color gamut and extremely high in color accuracy.
The dry coating amount of the holographic laser information surface layer and the holographic laser information secondary layer can be 0.5-2.0g/m2The composite material can be formed by single-die pressing under the condition of single hard roller or double hard rollers, and a nickel plate is adopted during die pressing. The material can be polyacrylate with a relative molecular weight of 70000-90000, and comprises thermoplastic resin formed by cross-linking polymerization of one or more monomers of methyl acrylate, ethyl acrylate, n-butyl acrylate, methyl methacrylate and n-butyl methacrylate. The polyacrylate can also be added with the organic fluorine resin A according to the dry matter mass ratio of 1: 0.03-0.05; the organic fluororesin A is fluorine-containing polymethyl methacrylate with the fluorine distribution on the carbon chain being almost uniform, the relative molecular weight is 6000-12000, preferably 6000-8000, and the fluorine-containing polymethyl methacrylate and perfluorononenylphenyl ether are obtained by 1:1 of the mass ratio of methyl methacrylate and perfluorononenylphenyl ether under the condition of containing ferrous oxalate catalyst and carrying out 1:1 alternate block reaction. The polyacrylate added with the organic fluoride A has better mould pressing effect, higher speed and easier demoulding, a holographic imaging layer with good quality can be prepared without adopting a mould release agent, and the nickel plate is easy to be free from material sticking and the material belt after being pressed is free from defects by controlling mould pressing temperature and pressure; the bonding quality between the holographic laser information surface layer and the adjacent layer, such as the substrate layer and the aluminized layer, is good, the adhesive strength is high enough, the bonding between the holographic laser information surface layer and the adjacent layer is not affected when the adhesive layer and the third substrate layer are uncovered and stripped, and the point can be judged through the complete non-reduction of the holographic image quality. The organic fluororesin A is matched with the thermoplastic polyacrylate for use, so that the appropriate material properties of the holographic laser information layer, including strength and toughness, are provided, the surface polarity and tension of the holographic imaging layer are reduced, and the balance and consideration of the material properties and the surface properties are realized; thus, in addition to obtaining high quality holographic imagingThe layer also obviously reduces the potential adhesive force to the nickel plate, enlarges the controllable range of rolling temperature and pressure and obviously improves the rolling linear speed. The perfluorononenylphenyl ether has the following structure:
the uncovering glue layer can be obtained by coating and drying 1024 water-based modified acrylate copolymer emulsion of British science and technology (Guangzhou) Limited company with emulsion B of organic fluorine resin added according to the mass ratio of dry substances of 1:0.05-0.10, and the dry coating amount can be 3-10 g/square meter; the proportion ensures that the uncovering force values such as cross sectional force and peeling strength meet the requirements and are stable and less influenced by coating nonuniformity; one end of the carbon chain of the organic fluororesin B is perfluoroalkyl and the other end is malonic acid dimethylesterate, the relative molecular weight of the organic fluororesin B is 800-1500, preferably 800-1000, and the organic fluororesin B has the following structure, wherein CmF2m+1In the group, m is 6-10, preferably perfluoro-linear alkyl, CnH2nThe radical is a straight-chain alkyl radical, which can carry a small number of short-chain branches such as methyl and ethyl.
The thickness of the first aluminum layer and the second aluminum layer can be 200-600 angstroms.
The first substrate layer and the second substrate layer can be PET films, BOPET films or BOPP films with the thickness of 15-30 mu m, and when high bonding force is needed, the bonding surface of the substrate layers can be subjected to corona treatment; the release layer is 15-30 μm glassine paper or PET film coated with release agent such as organosilicon on the binding surface of the non-drying adhesive layer.
The invention discloses a preparation method of a double-code double-layer holographic laser anti-uncovering label capable of being collected at a high speed, which comprises the following steps:
(1) a second substrate layer with corona on two sides is adopted, aluminum is plated on one side of the second substrate layer, required glue is coated outside the aluminum plated layer, and the aluminum plated layer is dried to form a composite film comprising a first glue layer, a first aluminum plated layer and the second substrate layer;
(2) coating a coating of a holographic laser information sublayer on the corona surface of a third substrate layer with a single-sided corona, drying, sequentially performing die pressing to form holographic laser information and aluminizing of the sublayer, printing an optional spot color transparent ink layer and printing verification information on the aluminized surface, and forming a composite film comprising a verification information layer, an optional spot color transparent ink layer, a second aluminized layer and the holographic laser information sublayer;
(3) coating a coating of a holographic laser information surface layer on the corona surface of a first substrate layer with a corona on one side, drying, sequentially performing die pressing to form holographic laser information on the surface layer, printing a two-dimensional code and printing a white ink layer, then compounding a composite film obtained in the step (1) on the white ink layer through a first adhesive layer surface, coating a coating of a stripping adhesive layer on the other corona surface of a second substrate layer, and drying; further compounding the composite film obtained in the step (2) and comprising the verification information layer, the optional spot color transparent ink layer, the second aluminum coating layer and the holographic laser information sublayer outside the uncovered adhesive layer, wherein the uncovered adhesive layer is compounded with the tail corona surface of the third base material layer;
(4) stripping the third substrate layer of the film material obtained in the step (3), coating the required glue outside the exposed holographic laser information sublayer, and drying to form an adhesive-free bottom layer; die-cutting the single label into a required shape and size in the direction perpendicular to the laminating direction, and compounding the obtained label to the release surface of the release layer film through the outer surface of the non-dry primer layer;
(5) and slitting and rewinding the release layer film adhered with the label to prepare the release layer film long roll adhered with the label.
The peeling cross-sectional force between the third substrate layer and the holographic laser information secondary layer in the step (2) can be 2 +/-0.5N/25 mm, and the peeling strength can be 0.001-0.015N/mm; when the thermoplastic polyacrylate used in the holographic laser information sublayer is matched with the organic fluororesin A, the addition of the organic fluororesin A also contributes to the stability and reliability of the peeling transverse force and the peeling strength. And (4) the peeling cross-sectional force between the non-drying bottom adhesive layer and the release layer film in the step (4) can be less than or equal to 0.5N/25mm, and the peeling strength can be less than or equal to 0.0005N/mm.
In the step (3), a mould pressing digital printing integrated machine can be adopted, the holographic laser information is formed by mould pressing, the two-dimensional code and the white ink layer are printed in sequence, the accuracy of the nesting of the holographic laser information, the two-dimensional code and the white ink layer is guaranteed, and a mould pressing machine and a digital printing machine can also be adopted in sequence. Preferably, the two-dimensional code ink is waterproof, the white ink layer ink is water-based, and the dry coating amount of the white ink is 10-20 g/square meter, so that the erosion of the printed two-dimensional code by the white ink with larger printing thickness and ink amount is prevented, and the problems of irregular edges, such as reduction of definition or recognition level of the two-dimensional code, generation of edge burrs and the like, are avoided.
The mould pressing in the steps (2) and (3) can be carried out under the condition of double hard rollers, the mould pressing pressure is controlled more accurately, and the obtained holographic image has better effect. The conventional rolling mode with the nickel plate hard roller and the soft roller has the defects of inaccurate pressure control and slightly poor holographic image effect. The diameter of the compression roller can be 8-20cm, a heating temperature control component is arranged in the compression roller provided with the nickel plate, the compression roller not provided with the nickel plate is preferably internally provided with the heating temperature control component, and the compression roller is made of stainless steel or copper alloy; the mold pressing temperature is 150-. The molding pressure is the maximum pressure at the position of the slit between the two hard rollers and can be set in a software control system.
In the steps (1) and (2), the aluminum plating process is carried out in a vacuum aluminum plating machine, and the mass purity of the aluminum wire is more than or equal to 99.5 percent, preferably more than or equal to 99.9 percent; the vacuum degree of aluminizing is less than or equal to 10 Pa.
In the step (1), the first adhesive layer can be coated by 1024 water-based modified acrylate copolymer emulsion of Yingcao science and technology (Guangzhou) GmbH, and the dry coating amount can be 1-3 g/square meter.
The glue of the bottom glue layer is not dried in the step (4), and the ARKEMA (Achima) ENCOR 9446 water-based polyacrylate emulsion which is low in viscosity, can be diluted and easily coated, has very high dry film adhesiveness, comprises a low-energy surface, can form a firm flexible film, has excellent waterproof and antioxidant properties and can have the service life of more than ten years can be adopted; the dry coating amount can be from 10 to 20 grams per square meter.
In the steps, in the coating process of the holographic laser information surface layer and the sub-layer, the liquid raw materials of the polyacrylate and the fluorine-containing resin comprise solution type, emulsion type and water-based type; 200-600 mesh anilox coating rolls can be adopted, the coating speed is 10-60m/min, and the drying condition is 90-120 ℃ x2-5 seconds; in the glue coating process, a 500-1000 mesh anilox coating roller can be adopted, the coating speed is 60-100m/min, and the drying condition is 120-140 ℃ x2-6 seconds.
The double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed has the beneficial effects that:
1. the uncovering force value formed by uncovering the adhesive layer is moderate, and the bottom remaining rate of the anti-transfer holographic sublayer after the holographic laser information surface layer is uncovered can be ensured to be more than 99.5 percent and can easily reach more than 99.9 percent; the holographic surface layer is a two-dimensional code carrier, the anti-transfer holographic sublayer is a verification information carrier, and verification information such as a verification code can be checked and checked to inquire authenticity only by uncovering the surface layer; the verification information contains random information and the carrier is a secondary holographic laser film, so that batch copying, preparation and use of the information are avoided.
2. The two-dimensional code of the holographic surface layer, in particular the scanning identification information of the variable two-dimensional code, can comprise partial verification information of the anti-transfer holographic sublayer, such as a verification code; or after the two-dimensional code is scanned and identified through the corresponding APP, all or part of verification information contained in the product company server or obtained through calculation can be obtained, so that the product user can conveniently compare and judge the product to inquire, verify and trace the authenticity of the product.
3. The uncovering force value of the label is stable and accurate through a double-layer coating process, so that the label can be cut and separated at an excessive speed, the peeling is complete, the surface layer is not residual, and the sublayer is complete and lossless.
4. Because the secondary layer does not have films such as PET and the like as a carrier for bearing, the secondary layer is directly and strongly bonded on an attached object and cannot be completely transferred by a conventional method, so that the label cannot be completely transferred and reused.
5. The detection grade of the two-dimensional code on the label finished product is more than grade B, and 100% reading of the two-dimensional code information can be guaranteed when 1500 labels are collected and identified every minute.
6. When the transfer-proof holographic sublayer comprises the spot color transparent ink layer, the anti-counterfeiting grade and the counterfeiting difficulty of the label product are improved, and the holographic effect of the holographic laser information sublayer is not influenced; the verification code on the secondary layer can be composed of numbers, characters and characters with different sizes, different fonts and different color rules, and the purpose of marking is achieved.
7. When the mould pressing is carried out under the condition of double hard rollers, the mould pressing pressure is controlled more accurately, and the quality and the effect of the obtained surface layer holographic image and the obtained sublayer holographic image are both obviously improved.
Detailed Description
The invention is further illustrated, but is not to be construed as being limited, by the following examples.
Example 1
The double-code double-layer holographic laser anti-transfer utilization label is prepared by the following steps:
(1) a second substrate layer with corona on two sides is adopted, aluminum is plated on one side of the second substrate layer, required glue is coated outside the aluminum plated layer, and the aluminum plated layer is dried to form a composite film comprising a first glue layer, a first aluminum plated layer and the second substrate layer;
(2) coating a coating of a holographic laser information sublayer on one side of a third substrate layer by adopting the third substrate layer, drying, sequentially forming holographic laser information and aluminizing of the sublayer through mould pressing, and printing verification information on an aluminized surface to form a composite film comprising a verification information layer, a second aluminized layer and the holographic laser information sublayer;
(3) coating a coating on the surface layer of the holographic laser information on the first substrate layer, drying, sequentially performing die pressing to form the holographic laser information on the surface layer, printing the two-dimensional code and printing a white ink layer, then compounding the white ink layer with the first adhesive layer in the step (1) to obtain a composite film comprising the first adhesive layer, the first aluminum-plated layer and the second substrate layer, coating a coating for uncovering the adhesive layer on the outer surface of the second substrate layer, and drying; further compounding the composite film containing the verification information layer, the second aluminum-plated layer and the holographic laser information sublayer, which is obtained in the step (2), outside the uncovered adhesive layer;
(4) stripping the third substrate layer of the film material obtained in the step (3), coating the required glue outside the exposed holographic laser information sublayer, and drying to form an adhesive-free bottom layer; die-cutting the single label into a required shape and size in the direction perpendicular to the laminating direction, and compounding the obtained label to the release surface of the release layer film through the outer surface of the non-dry primer layer;
(5) and slitting and rewinding the release layer film adhered with the label to prepare the release layer film long roll adhered with the label.
In the steps (1) to (4), the substrate layers are all PET films with the length of about 1000m and the width of 35cm and the thickness of 20 mu m; during the coating process of the holographic laser information surface layer and the sub-layer, a 300-mesh anilox coating roller is adopted, the coating speed is 50m/min, the drying condition is 100 ℃ for x3 seconds, and the dry coating amount is 1.2g/m2Coating once; in the glue coating process, a 600-mesh anilox coating roller is adopted, the coating speed is 100m/min, the drying condition is 130 ℃ and x2.5 seconds, and the coating is carried out for 1-2 times according to the dry coating amount requirement. The coating of the holographic laser information sublayer in the steps (2) to (3) is thermoplastic polymethyl methacrylate resin, is a water-based coating with the ash content of less than or equal to 0.1 m% at 800 ℃ after being dried by distillation, and has the relative molecular weight of 80000. The aluminum plating process is carried out in a vacuum aluminum plating machine, and the average aluminum plating thickness is 400 angstroms; the mass purity of the aluminum wire is more than or equal to 99.9 percent, and the aluminum plating vacuum degree is 5-10 Pa.
The glue used for the first glue layer in the step (1) is 1024 water-based modified acrylate copolymer emulsion of Yingcao scientific and technology (Guangzhou) GmbH, and the dry coating amount is 2 g/square meter. The uncovering adhesive layer is obtained by adding an organic fluororesin B emulsion into a 1024 water-based modified acrylate copolymer emulsion of the Kyowa science and technology (Guangzhou) Limited company according to the mass ratio of dry matters of 1:0.08, coating and drying, wherein the dry coating amount is 6 g/square meter, the relative molecular weight of the organic fluororesin B is 800-850, and the structure is shown in the specification, wherein C ismF2m+1M in perfluoro-linear alkyl is 8, CnH2nThe radical is a straight-chain alkyl radical; the liquid raw material of the organic fluororesin B is water-based paint with the ash content of less than or equal to 0.1m percent at 800 ℃ after being evaporated to dryness, has good compatibility with the 1024 water-based modified acrylate copolymer emulsion, is easy to mix uniformly, and is very stable during the use and the storage at normal temperature within 2 days after being mixed uniformly. The glue used for the non-drying primer layer in the step (4) is ARKEMA (Achima) ENCOR 9446 water-based polyacrylate emulsion, the dry coating amount is 15 g/square meter, and the coating is carried out for 2 times. The two-dimensional code ink used in the step (3) is waterproof, and the white ink layer ink is water-based ultra whiteThe dry coating quantity of the ink and the white ink is 12 g/square meter.
The mould pressing of the steps (2) and (3) is carried out under the condition of a single hard roller, and a conventional rolling mode with a nickel plate hard roller and a conventional soft roller is adopted; the hard roller is made of stainless steel, and the diameters of the two rollers are 12 cm; the molding conditions were 160 ℃ and 0.8MPa, and the linear velocity was 40 m/min.
In the step (2), the equipment used for printing the verification information is a Hewlett packard Indigo WS6900 digital printer, and Hewlett packard Indigo electronic ink is adopted. The printed verification information content is generated and controlled by software, wherein the graphics and the images are set unchanged, and the digital information containing numbers, characters and characters is randomly generated and contains a plurality of colors.
In the step (3), the equipment used for die pressing and printing the two-dimensional code and the white ink layer is a die pressing digital printing integrated machine, and after the holographic imaging layer is formed, the two-dimensional code and the white ink layer are respectively printed; the two-dimensional code, the ink amount, the content, the shape and the size of the white ink layer are generated, set and controlled by software and are in networking control with the HP Indigo WS6900 digital printer in the step (2); the matrix type two-dimensional code correspondingly generated is square, the side length is 12mm, the matrix type two-dimensional code is located in the middle of a square white ink area, each side length of the white ink blank area is 1.20 times of the corresponding side length of the outer edge of the two-dimensional code, and the two-dimensional code information comprises the name of a commodity manufacturer, the production year and the digital information which is randomly generated in the step (2) and is set to be unchanged.
The release layer film in the step (4) is glassine paper with the adhesive surface coated with an organic silicon release agent and the thickness of 30 mu m.
Example 2
The double-code double-layer holographic laser anti-transfer utilization label is prepared according to the steps (1) to (5) of the embodiment 1, and the difference is that the thermoplastic polymethyl methacrylate resin water-based paint used in the holographic laser information sublayers in the steps (2) to (3) is added with the water-based paint of the organic fluororesin A according to the dry matter mass ratio of 1:0.04, the two water-based paints have good compatibility and are easy to mix uniformly, and the mixture is stored at normal temperature within 2 days and is very stable in the using process after being mixed uniformly; the fluorine-containing resin A is fluorine-containing polymethyl methacrylate with the relative molecular weight of 7000 and the fluorine distribution on the carbon chain being substantially uniform, and is obtained by carrying out 1:1 interval block reaction on methyl methacrylate and perfluorononenylphenyl ether according to the mass ratio of 1:1 under the condition of containing a ferrous oxalate catalyst, wherein the perfluorononenylphenyl ether has the structure.
Example 3
Preparing the double-code double-layer holographic laser anti-transfer utilization label of the embodiment basically according to the steps (1) to (5) of the embodiment 2, wherein the difference is that the molding of the holographic laser information sub-layer of the steps (2) to (3) is carried out under the condition of double hard rollers, and a hard roller with the same nickel plate and another stainless steel hard roller are adopted; the molding conditions were 180 ℃ and 0.5MPa, and the linear velocity was 50 m/min.
Example 4
Basically according to the steps (1) to (5) of the embodiment 2, the double-code double-layer holographic laser anti-transfer utilization label of the embodiment is prepared, except that in the step (2), a spot color transparent ink layer is printed between the verification information layer and the second aluminum-plated layer, Hewlett packard Indigo Magenta electronic ink is adopted, and a spot color channel is set for printing, wherein the ink amount is 2; and in the step (3), the side length of each white ink blank area is 1.35 times of the corresponding side length of the outer edge of the two-dimensional code.
In the operation process of the embodiment, the coating and drying effects of the glue and the holographic laser information surface coating are normal and meet the requirements; the combination and composite quality between each layer is normal and meets the requirements; the detection can remove the holographic surface layer and prevent the transferring holographic sublayer, and the holographic anti-counterfeiting effect reaches the standard. The blackness of the ink marks of the two-dimensional codes is higher than 95%, and the whiteness of the white ink area is higher than 90%.
The equipment of two-dimensional code grade is REA VeriCube, and the detection standard is ISO/IEC 15415.
After the labels of the embodiment 1 and the labels of the embodiment 1 are aged at 80 ℃ and 240h, the glassine tapes are respectively torn off and 2000 labels are respectively stuck on the side cylindrical surface of a white spirit glass bottle and the plane surface of the package box made of the souvenir PP material.
Typical results of the primary effect measurements are shown in Table 1.
TABLE 1
Claims (10)
1. A double-code double-layer holographic laser transfer-preventing utilization label capable of being collected at high speed sequentially comprises a first substrate layer, a holographic laser information surface layer, a two-dimensional code layer, a white ink layer, a first adhesive layer, a first aluminum-plated layer, a second substrate layer, an uncovering adhesive layer, a verification information layer, a second aluminum-plated layer, a holographic laser information sub-layer, a non-dry bottom adhesive layer and a release layer from top to bottom;
the first substrate layer, the holographic laser information surface layer, the two-dimensional code layer, the white ink layer, the first adhesive layer, the first aluminum-plated layer, the second substrate layer and the uncovering adhesive layer form an uncoverable holographic surface layer of the label; the verification information layer, the second aluminum-plated layer, the holographic laser information sublayer and the non-dry bottom adhesive layer form an anti-transfer holographic sublayer of the label; the label is affixed to the surface of the item and/or its packaging by a non-drying primer layer.
2. The label capable of being collected at high speed and used for preventing double-code double-layer holographic laser transfer as claimed in claim 1, wherein the detection level of the two-dimensional code on a finished label is more than B level; the two-dimensional code comprises a stacked two-dimensional bar code and a matrix two-dimensional code and is positioned in the middle of the white ink area, and the side length of each white ink blank area on the periphery of the two-dimensional code is not less than 1.20 times of the corresponding side length of the outer edge of the two-dimensional code; the blackness of the two-dimensional code ink mark is higher than 95%, and the whiteness of the white ink area is higher than 90%.
3. The label of claim 1, wherein the verification information of the holographic sublayer is composed of one or more of numbers, characters, words, graphics and images, and comprises a combination of randomly generated information and setting information, and comprises a verification code composed of one or more of numbers, characters and words; or the verification code is a digital string with anti-counterfeiting and tracing functions generated by digital conversion software; or the authentication information is multi-colored and/or monochrome.
4. The double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed according to claim 1, wherein the uncovering force value between the uncovering glue layer and the anti-transfer holographic secondary layer comprises: the transverse force is 3 plus or minus 0.5N/25mm, and the peeling strength is 0.002-0.003N/mm; or the peel force values between the release liner and the goods and/or their packaging include: the transverse force is more than or equal to 5N/25mm, and the peel strength is more than or equal to 0.005N/mm; or the peeling force value between the first adhesive layer and the first aluminum plating layer comprises: the transverse force is more than or equal to 5N/25mm, and the peeling strength is more than or equal to 0.005N/mm.
5. The high-speed-collectable double-code double-layer holographic laser anti-transfer utilization label as claimed in claim 4, wherein the uncovering glue layer is formed by coating and drying a 1024 water-based modified acrylate copolymer emulsion of the Kyowa science and technology (Guangzhou) Co., Ltd in a dry matter mass ratio of 1:0.05-0.10, wherein the emulsion B is added with an organic fluorine resin, and the dry coating amount is 3-10 g/square meter; the organic fluororesin B has a relative molecular weight of 800-1500 and a structure shown in the specification, wherein C ismF2m+1The radical is perfluoro-linear alkyl, m is 6-10, CnH2nThe group is a straight-chain alkyl group:
6. the high-speed-collectable double-code double-layer holographic laser anti-transfer utilization label of claim 1, wherein the dry coating amount of the holographic laser information surface layer and the holographic laser information sublayer is 0.5 to 2.0g/m2The single-hard roller or double-hard roller single-die pressing is carried out, and a nickel plate is adopted during die pressing; the holographic laser information surface layer and the holographic laser information sublayer are made of polyacrylate with the relative molecular weight of 70000-90000 and comprise methyl acrylate, ethyl acrylate, n-butyl acrylate and methacrylic acidOne or more of methyl ester and n-butyl methacrylate is monomer, and the thermoplastic resin is formed by cross-linking polymerization.
7. The label capable of being collected at high speed and used for preventing the transfer of double-code double-layer holographic laser information as claimed in claim 6, wherein the polyacrylate of the holographic laser information surface layer and the holographic laser information sublayer is added with an organic fluorine resin A according to a dry matter mass ratio of 1: 0.03-0.05; the organic fluororesin A is fluorine-containing polymethyl methacrylate with the relative molecular weight of 6000-12000, and is obtained by carrying out 1:1 interval block reaction on methyl methacrylate and perfluorinated nonenylphenyl ether according to the mass ratio of 1:1, wherein the perfluorinated nonenylphenyl ether has the following structure:
8. the double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed according to claim 1, wherein a spot color transparent ink layer is further arranged between the verification information layer and the holographic laser information sublayer, and is printed by adopting a spot color ink and a spot color channel; or the thickness of the first aluminum plating layer and the second aluminum plating layer is 200-600 angstroms; or the thicknesses of the first base material layer and the second base material layer are 15-30 mu m of PET film, BOPET film or BOPP film; or the release layer is glassine paper or a PET film with the thickness of 15-40 μm, and the release agent is coated on the binding surface of the release layer and the non-drying adhesive layer.
9. The method for preparing the double-code double-layer holographic laser anti-transfer utilization label capable of being collected at high speed according to claim 1, comprising the following steps of:
(1) a second substrate layer with corona on two sides is adopted, aluminum is plated on one side of the second substrate layer, required glue is coated outside the aluminum plated layer, and the aluminum plated layer is dried to form a composite film comprising a first glue layer, a first aluminum plated layer and the second substrate layer;
(2) coating a coating of a holographic laser information sublayer on one side of a third substrate layer by adopting the third substrate layer, drying, sequentially forming holographic laser information of the sublayer by mould pressing, aluminizing, printing an optional spot color transparent ink layer on an aluminized surface, and printing verification information to form a composite film comprising a verification information layer, an optional spot color transparent ink layer, a second aluminized layer and the holographic laser information sublayer;
(3) coating a coating on the surface layer of the holographic laser information on the first substrate layer, drying, sequentially performing die pressing to form the holographic laser information on the surface layer, printing the two-dimensional code and printing a white ink layer, then compounding the white ink layer with the first adhesive layer in the step (1) to obtain a composite film comprising the first adhesive layer, the first aluminum-plated layer and the second substrate layer, coating a coating for uncovering the adhesive layer on the outer surface of the second substrate layer, and drying; further compounding the composite film containing the verification information layer, the optional spot color transparent ink layer, the second aluminum coating layer and the holographic laser information sublayer, which is obtained in the step (2), outside the uncovered adhesive layer;
(4) stripping the third substrate layer of the film material obtained in the step (3), coating the required glue outside the exposed holographic laser information sublayer, and drying to form an adhesive-free bottom layer; die-cutting the single label into a required shape and size in the direction perpendicular to the laminating direction, and compounding the obtained label to the release surface of the release layer film through the outer surface of the non-dry primer layer;
(5) and slitting and rewinding the release layer film adhered with the label to prepare the release layer film long roll adhered with the label.
10. The method for preparing a double-code double-layer holographic laser anti-transfer utilization label capable of being collected at a high speed according to claim 9, wherein the peeling transverse force between the third substrate layer and the holographic laser information sub-layer in the step (2) is 2 +/-0.5N/25 mm, and the peeling strength is 0.001-0.015N/mm; or the mould pressing of the steps (2) and (3) is carried out under the condition of double hard rollers, the mould pressing temperature is 150-.
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