Magnetic effect pre-coated colored tape and preparation method and printing method thereof

Abstract

The invention relates to an anti-counterfeiting material and a preparation method thereof, in particular to a pre-coated ribbon with a magnetic effect and a preparation method and a printing method of the pre-coated ribbon. In order to overcome the defects that in the prior art, magnetic printing equipment is difficult to install and is difficult to flexibly adapt to different printing processes, the pre-coated ribbon with the magnetic effect comprises a base film and a plurality of coatings which are sequentially arranged on the base film, the multiple coatings comprise a bottom coating, a release layer, a magnetic coating, a first reinforcing coating and a back adhesive layer which are sequentially arranged from the position close to the base film, the bottom coating is used for improving the surface adhesive force of the base film, the release layer has the release and trimming effects, the magnetic coating is used for expressing the magnetic effect, and the first reinforcing coating is used for improving the surface adhesive force of the base film. The first reinforcing coating is used for reinforcing the connecting force between the magnetic coating and the back adhesive layer, and the back adhesive layer is used for being bonded with a printing stock during hot transfer printing; meanwhile, the invention further provides a preparation method and a printing method of the pre-coated colored tape with the magnetic effect.

Description

Technical Field

[0001] This invention relates to anti-counterfeiting materials and their preparation methods, specifically to a magnetic pre-coated ribbon and its preparation and printing methods. Background Technology

[0002] Magnetic printing has a unique light-sensitive effect that is easily identifiable by users but difficult to counterfeit. Therefore, it is widely used in the field of anti-counterfeiting printing. By using magnetic printing to load anti-counterfeiting information onto various labels, envelopes, and packaging, it can effectively protect goods.

[0003] Magnetic printing technologies were first disclosed as early as 2006. For example, Chinese patent CN1812886A disclosed a method and apparatus for inducing patterns in a coating containing magnetic particles through a magnetic field. This involves engraving a magnetic plate to create a magnetic imprint, thereby altering the arrangement of magnetic photochromic pigments to obtain information imprints, thus opening up applications of magnetic printing in anti-counterfeiting. US patent US2008 / 0171144A1 disclosed a magnetic printing text overprinting technology, presenting a magnetic anti-counterfeiting effect from an external perspective. Chinese patent CN111776471A disclosed a scene-changing anti-counterfeiting structure, anti-counterfeiting plastic seal, and its preparation method, utilizing magnetic printing to create a scene-changing effect and producing an effectively anti-counterfeiting plastic seal product. It is evident that magnetic printing possesses very high anti-counterfeiting performance.

[0004] However, magnetic printing cannot easily incorporate magnetic elements in its printing formula design. The incorporation of magnetic elements requires magnetic orientation and shaping processes using a magnetic field, which involves highly complex modifications to the equipment's magnetic field module. Therefore, if magnetic printing is to be added to a user's existing printing process, custom-made equipment must be commissioned, which is not compatible with the user's existing equipment and leads to increased printing costs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in installing magnetic printing equipment and the inability to flexibly adapt to different printing processes, and to provide a magnetic effect pre-coated ribbon, its preparation method, and printing method.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0007] A magnetic effect pre-coated tape, characterized in that it comprises a base film and multiple coatings sequentially disposed on the base film; the multiple coatings include, starting from the position closest to the base film, a base layer, a release layer, a magnetic coating, a first reinforcing coating, and an adhesive layer; the base film is a polymer film; the base layer comprises a resin, a curing agent, and a diluent uniformly mixed in a mass ratio of 10:(1~4):(1~10), used to improve the surface adhesion of the base film; the release layer comprises a resin, a curing agent, and a diluent uniformly mixed in a mass ratio of 10:(1~4):(1~10), used to improve the surface adhesion of the base film; the release layer comprises a resin, a curing agent, and a diluent uniformly mixed in a mass ratio of 10:(1~4):(1~10), used to improve the surface adhesion of the base film; The resin and diluent in a ratio of 10:(1-4):(1-100) serve as release agents and edge trimmers; the magnetic coating comprises a uniformly mixed resin, magnetic pigment, and diluent for expressing magnetic effects; the first reinforcing coating comprises a uniformly mixed resin, curing agent, and diluent in a mass ratio of 10:(1-4):(1-100) for enhancing the adhesion between the magnetic coating and the adhesive layer; the adhesive layer comprises a uniformly mixed adhesive resin and diluent in a mass ratio of 10:(1-100) for bonding with the substrate during hot stamping.

[0008] Furthermore, the base film is a composite of one or more of PET, BOPP, PC, and PO, with a thickness of 5 to 250 micrometers;

[0009] The coating thickness of each of the multiple coatings is 1 to 50 micrometers;

[0010] In the base coating, the resin is a composite of one or more of acrylic acid, polyurethane, cellulose acetate butyrate, and epoxy resin; the curing agent is an isocyanate curing agent, melamine curing agent, or ammonia curing agent; and the diluent is compatible with the resin type.

[0011] In the magnetic coating, the magnetic pigment has a mass percentage of 0.1% to 20%, the magnetic pigment is a flake pigment, the pigment thickness is 0.1 to 5 micrometers, the particle size is 2 to 100 micrometers, and the arrangement angle is 0 to 180°.

[0012] Furthermore, the base film is made of PET material and has a thickness of 19 micrometers;

[0013] The mass ratio of resin, curing agent, and diluent in the base coating is 10:1:5, the coating thickness is 8 micrometers, the resin is epoxy resin, and the curing agent is melamine.

[0014] The magnetic coating contains 10% magnetic pigment by mass, has a particle size of 10 micrometers, a coating thickness of 8 micrometers, and uses acrylic resin.

[0015] The mass ratio of resin, curing agent and diluent in the first reinforcing coating is 10:1:5, the coating thickness is 10 micrometers, and the resin is a composite of one or both acrylic acid and polyurethane.

[0016] Furthermore, a coloring layer and a second reinforcing coating are sequentially disposed between the release layer and the magnetic coating;

[0017] The coloring layer is used to render different transparent colors. Its components include a uniformly mixed resin, pigment and diluent. The mass ratio of resin to diluent is 10:(1-100). The resin is a composite of one or more of acrylic acid and polyurethane. The diluent is mainly used to adjust the viscosity. The pigment is a pigment or dye. The coating thickness is 1-50 micrometers.

[0018] Furthermore, the mass ratio of resin to diluent in the coloring layer is 1:2, the resin is polyurethane, and the coating thickness is 10 micrometers.

[0019] In the second reinforcing coating, the mass ratio of resin, curing agent and diluent is 10:1:20, the resin is polyurethane, and the coating thickness is 10 micrometers.

[0020] Furthermore, the magnetic coating also includes colorants to change the apparent color of the magnetic coating.

[0021] The present invention also provides a method for preparing the above-mentioned magnetic effect pre-coated ribbon, which is characterized by including the following steps:

[0022] Step 1: Sequentially apply a base coating layer and a release layer onto the base film to obtain the first base layer;

[0023] Step 2: Prepare a magnetic coating on the release layer of the first base layer to obtain the second base layer, specifically including:

[0024] Step 2.1: Mix magnetic pigments with a particle size of 2 to 100 micrometers, resin and diluent uniformly, wherein the mass percentage of magnetic pigments is 0.1% to 20%;

[0025] Step 2.2: Apply the coating evenly to the first base layer according to the preset pattern, with a coating thickness of 1-50 micrometers;

[0026] Step 2.3: Perform magnetic orientation and magnetic shaping on the magnetic pigment to obtain the second base layer;

[0027] Step 3: Prepare the first reinforcing coating and the backing layer sequentially on the magnetic coating of the second base layer to obtain the magnetic effect pre-coated color strip.

[0028] Furthermore, in step 1, after sequentially setting the base coating layer and the release layer on the base film, a coloring layer and a second reinforcing coating are sequentially prepared on the release layer.

[0029] Meanwhile, the present invention also provides a printing method for the above-mentioned magnetic effect pre-coated ribbon, which is characterized by including the following steps:

[0030] S1. Simultaneously move the magnetic effect pre-coated ribbon and the substrate to the bottom of the hot stamping transfer equipment;

[0031] S2. The hot stamping equipment moves down and the pressure fixture on the hot stamping equipment presses the magnetic effect pre-coated ribbon onto the substrate. It continues to apply pressure and heat until the adhesive layer melts and the magnetic coating is bonded to the substrate.

[0032] S3. Peel off the base film and release layer to obtain a substrate with a patterned magnetic coating.

[0033] Furthermore, in step S2, when the magnetic effect pre-coated ribbon has a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger does not have a pattern; when the magnetic effect pre-coated ribbon does not have a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger has a pattern.

[0034] The beneficial effects of this invention are:

[0035] 1. This invention provides a magnetic effect pre-coated ribbon, which records magnetic signal elements on the ribbon to achieve independent preparation of the magnetic coating. With the cooperation of other layers such as the base layer and release layer, the magnetic effect pre-coated ribbon can be made separately and then effectively transferred to the substrate by heat transfer method.

[0036] 2. This invention simplifies the production method of anti-counterfeiting labels with magnetic effects. By preparing a pre-coated color ribbon with magnetic effects, a pre-coated color ribbon with magnetic effects is produced and then printed onto the substrate. This allows users to easily use magnetic elements for anti-counterfeiting on different materials and with different printing processes. Furthermore, since there are no restrictions on the direction of use of the pre-coated color ribbon with magnetic effects, the problem of circumferential magnetic arrangement can be solved, which is something that ordinary magnetic printing cannot achieve at all.

[0037] 3. In the printing method of the magnetic effect pre-coated ribbon of the present invention, since the high temperature bearing part of the magnetic effect pre-coated ribbon has been implemented during the ribbon base film production, the ribbon transfer can be achieved by using both cold and hot foil stamping techniques. Even if the substrate is not resistant to high temperature, the transfer can be effectively achieved. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the magnetic effect pre-coated ribbon structure in Embodiment 1 of the present invention;

[0039] Explanation of reference numerals in the attached figures:

[0040] 1-Base film, 2-Undercoat layer, 3-Release layer, 4-Coloring layer, 5-Second reinforcing coating, 6-Magnetic coating, 7-First reinforcing coating, 8-Adhesive backing layer. Detailed Implementation

[0041] Example 1

[0042] The present invention provides a magnetic effect pre-coated ribbon comprising a base film 1 and at least five coating layers sequentially disposed on the base film 1. In this embodiment, a total of seven coating layers are disposed, and the structure of each layer from bottom to top, starting from the position closest to the base film 1, is shown in the table below:

[0043]

[0044]

[0045] The first layer of the magnetic effect pre-coated ribbon is set as base film 1, with a thickness of 5 to 250 micrometers, which is used to support the printing of other coatings and facilitates hot stamping production. Base film 1 is set as base film 1, which is a composite material composed of one or more of the following materials: PET, BOPP, PC, PO, etc. PET material is preferred. In this embodiment, Fuwei pre-coated PET is selected, with a thickness of 19 micrometers and a width of 1200 mm.

[0046] The second layer is designated as the base coating 2, used to improve the surface adhesion of the base film 1, thereby enhancing the clarity of the release slit. The main components of the base coating 2 include resin, curing agent, and diluent, with a thickness of 1–50 micrometers. The resin can be one or more composites of acrylic acid, polyurethane, cellulose acetate butyrate (CAB), epoxy resin, etc. The curing agent is used to perform a crosslinking reaction with the resin and can be isocyanate-based curing agents, melamine curing agents, ammonia curing agents, etc. The diluent is used to adjust the viscosity of the base coating 2, and the appropriate diluent is selected according to the type of resin. The mass ratio of resin, curing agent, and diluent is 10:(1–4):(1–10). Epoxy resin and melamine are preferred as the resin and curing agent, respectively. Melamine, as a curing agent, allows the epoxy resin to undergo crosslinking and curing. In this embodiment, high-purity solid epoxy resin of Nan Ya (model NPES-904) is used, which is beneficial for stabilizing the cut edges. The curing agent is Cymel 303LF from Zhanxin Chemical, which is a melamine-based curing agent. The diluent is n-propyl ester solvent. The coating thickness is 8 micrometers, and the mass ratio of resin, curing agent and diluent is 10:1:5.

[0047] The third layer is designated as release layer 3, serving the functions of release and edge trimming. Its components include resin and diluent, or a single resin, with a coating thickness of 1–50 micrometers. The resin can be one or more composites of acrylic acid, polyurethane, CAB, etc. The diluent is used to adjust the viscosity of release layer 3, with a resin-to-diluent mass ratio of 10:(1–100). In this embodiment, acrylic resin 4738 is selected, as it has excellent edge trimming properties. The resin-to-diluent mass ratio is 1:2, and the coating thickness is set to 8 micrometers.

[0048] The fourth layer is designated as coloring layer 4. This coating is used to render different transparent colors and includes resin, pigment, and diluent. The resin can be one or more composites of materials such as acrylic acid and polyurethane. The diluent is mainly used to adjust the viscosity. The mass ratio of resin to diluent is 10:(1-100). The coating thickness is 1-50 micrometers. The pigment can be pigments, dyes, etc. In this embodiment, polyurethane resin 4200 is selected, the mass ratio of resin to diluent is 1:2, and the coating thickness is 10 micrometers.

[0049] The fifth layer is set as the second reinforcing coating 5, which is used to enhance the connection between the coloring layer 4 and the magnetic layer. The components include resin and diluent. The resin can be one or more composites of materials such as acrylic acid and polyurethane. The diluent is mainly used to adjust the viscosity. The mass ratio of resin, curing agent and diluent is 10:(1~4):(1~100). The coating thickness is 1~50 micrometers. In this embodiment, polyurethane resin 4200 is selected as the resin, and Demox 3390 is selected as the curing agent. The mass ratio of resin, curing agent and diluent is 10:1:5. The coating thickness is 10 micrometers.

[0050] The sixth layer is set as a magnetic coating 6, which is used to express the magnetic effect. The magnetic effect refers to the light and dark changes that appear after the magnetic pigments are oriented. Magnetic pigments are generally flake pigments. By oriented the flake pigments, countless tiny reflectors can be produced. The magnetic effect is fixed on the color strip using coating technology, which makes it easier to heat transfer.

[0051] The magnetic coating 6 consists of resin, magnetic pigment, and diluent. The resin is used to orient the magnetic pigment in the coating at a set angle. The resin can be a composite of one or more materials such as acrylic, polyurethane, and polyester, which has excellent edge cutting. The diluent is mainly used to adjust the viscosity of the magnetic coating 6. Depending on the type of resin and diluent selected, the magnetic coating 6 can be UV-based, water-based, oil-based, or EB-based.

[0052] Magnetic pigments are flake-shaped pigments with a specific aspect ratio, a particle size (d50) of 2–100 micrometers, and a pigment thickness of 0.1–5 micrometers. These flake-shaped pigments can effectively generate magnetic field deflection, producing a magnetic effect. During coating, the partial or complete deflection of these flake-shaped pigments creates directional gloss. The alignment angle of the magnetic pigments ranges from 0 to 180°, and can be infinitely close to 0° or 180°. This invention can utilize magnetic pigments produced through methods such as chemical magnetization, optical vacuum coating, and magnetic aluminum alloying.

[0053] The thickness of the magnetic coating 6 is 1 to 50 micrometers, wherein the mass percentage of the magnetic pigment is 0.1% to 20%. In this embodiment, acrylic resin 620-2 and magnetic pigment with a particle size of 10 micrometers are selected, the coating thickness is 8 micrometers, and the mass percentage of the magnetic pigment is 10%. This ratio gives the magnetic pigment good dispersibility and excellent directional gloss.

[0054] The magnetic coating 6 is the core coating of this invention. It is applied using a magnetic coating machine, preferably using micro-gravure coating. The application of the magnetic pigment includes magnetic orientation and magnetic shaping processes. In this embodiment, the magnetic coating machine places the magnetic mold after the coating head to achieve magnetic orientation. The magnetic mold can be a magnetic roller or a magnetic module, preferably a magnetic roller. The magnetic coating 6 preferably has UV properties, and magnetic shaping can be achieved quickly after passing through the magnetic roller.

[0055] The 7th layer is set as the first reinforcing coating 7, which is used to enhance the connection between the magnetic coating 6 and the adhesive layer 8. The components include resin, curing agent and diluent. The resin can be one or more composites of materials such as acrylic acid and polyurethane. The diluent is used to adjust the viscosity. The mass ratio of resin to diluent is 10:(1~4):(1~100). The coating thickness is 1~50 micrometers. In this embodiment, the resin is polyurethane resin 4200, the curing agent is Demox 3390, the mass ratio of resin, curing agent and diluent is 10:1:20, and the coating thickness is 10 micrometers.

[0056] The 8th layer is set as an adhesive backing layer 8, which is used to bond with the substrate during hot stamping. During bonding, the release layer 3, coloring layer 4, second reinforcing coating 5, magnetic coating 6, first reinforcing coating 7, and adhesive backing layer 8 are separated from the base layer and base film 1. The adhesive backing layer 8 is composed of adhesive resin and diluent. The adhesive resin can be one or more composites of materials such as acrylic acid and polyurethane. The diluent is mainly used to adjust the viscosity. The mass ratio of adhesive resin to diluent is 10:(1~100), and the coating thickness is 1~50 micrometers. In this embodiment, polyurethane resin 5129 is selected, the mass ratio of adhesive resin to diluent is 1:2, and the coating thickness is 10 micrometers.

[0057] In this invention, each coating can be applied using flexographic printing, screen printing, gravure printing, comma coating, micro-gravure coating, screen roller coating, or multi-roller coating. In this embodiment, micro-gravure coating is used, and the coating roller can be a 40-350 mesh ceramic roller, preferably a 250 mesh ceramic roller. The ceramic roller can make the coating of each coating, especially the magnetic coating 6, more stable.

[0058] The diluent for each coating is selected according to the corresponding resin type. Commonly used diluents include esters, alcohols, ethers, ketones, water, monomers, etc.

[0059] The preparation of the magnetic effect pre-coated ribbon in this embodiment specifically includes the following steps:

[0060] Step 1: Mix the components of each coating evenly according to the proportion, and sequentially apply the base coating 2, release layer 3, coloring layer 4 and second reinforcing coating 5 on the base film 1 to obtain the first base layer;

[0061] Step 2: Prepare a magnetic coating 6 on the release layer 3 of the first base layer to obtain the second base layer, specifically including:

[0062] Step 2.1: Mix magnetic pigment with a particle size of 10 micrometers, resin and diluent evenly, with the magnetic pigment accounting for 10% by mass.

[0063] Step 2.2: Apply the mixture from Step 2.1 evenly to a predetermined position on the first base layer, with a coating thickness of 8 micrometers;

[0064] Step 2.3: Perform magnetic orientation and magnetic shaping on the magnetic pigment to obtain the second base layer;

[0065] Step 3: Prepare the first reinforcing coating 7 and the backing layer 8 sequentially on the magnetic coating 6 of the second base layer to obtain the magnetic effect pre-coated color ribbon.

[0066] The magnetic coating 6 on the magnetic effect pre-coated ribbon can form magnetic patterns, text, numbers, and English letters, etc., which are then transferred onto the substrate at the required angle. Combined with a multi-color heat transfer device, it is possible to create a variety of effects with multiple colors, magnetic effects, and / or patterns. The heat transfer device used in this invention is a multi-angle magnetic effect heat transfer device that transfers the magnetic effect pre-coated ribbon onto the substrate. This device can adjust the angle during heat transfer according to the desired magnetic arrangement direction, thereby achieving multi-angle heat transfer and forming a magnetic anti-counterfeiting label. The printing of the magnetic effect pre-coated ribbon specifically includes the following steps:

[0067] S1. Simultaneously move the magnetic effect pre-coated ribbon and the substrate to the bottom of the multi-angle magnetic effect heat transfer equipment;

[0068] S2. The multi-angle magnetic effect heat transfer equipment moves down, and the pressure fixture on the multi-angle magnetic effect heat transfer equipment presses the magnetic effect pre-coated ribbon onto the substrate. It continues to apply pressure and heat until the adhesive layer 8 melts and the magnetic coating 6 is bonded to the substrate.

[0069] S3. Peel off the magnetic coating 6 from the base film 1 and release layer 3 to obtain a substrate with patterned magnetic coating 6.

[0070] When the magnetic effect pre-coated ribbon has a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger does not have a pattern; when the magnetic effect pre-coated ribbon does not have a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger has a pattern.

[0071] The multi-angle magnetic heat transfer equipment can use cold heat transfer, hot heat transfer, and 3D heat transfer. The substrate can be PVC, PET, paper, or other materials.

[0072] Example 2

[0073] The difference between this embodiment and Embodiment 1 is that the magnetic effect pre-coated tape includes a base film, a primer layer, a release layer, a magnetic coating, a reinforcing coating, and an adhesive layer arranged sequentially. The magnetic coating comprises resin, magnetic pigment, and a diluent. The preparation of the magnetic effect pre-coated tape in this embodiment specifically includes the following steps:

[0074] Step 1: Sequentially apply a base coating layer and a release layer onto the base film to obtain the first base layer;

[0075] The thickness of the base coating is 50 micrometers, and the mass ratio of resin, curing agent and diluent is 10:4:10.

[0076] The release layer is 15 micrometers thick, and the mass ratio of resin to diluent is 10:1.

[0077] Step 2: Prepare a magnetic coating on the release layer of the first base layer to obtain the second base layer, specifically including:

[0078] Step 2.1: Mix magnetic pigment with a particle size of 90 micrometers, resin and diluent, with the magnetic pigment accounting for 0.5% by mass.

[0079] Step 2.2: Apply the mixture from Step 2.1 evenly to the predetermined position on the first base layer, with a coating thickness of 45 micrometers;

[0080] Step 2.3: Perform magnetic orientation and magnetic shaping on the magnetic pigment to obtain the second base layer;

[0081] Step 3: Prepare an reinforcing coating and an adhesive backing layer on the magnetic coating of the second base layer to obtain a magnetic effect pre-coated ribbon.

[0082] The mass ratio of resin, curing agent and diluent in the reinforced coating is 10:1:100, and the coating thickness is 50 micrometers.

[0083] The mass ratio of adhesive resin to diluent in the backing layer is 10:1, and the coating thickness is 2 micrometers.

[0084] Example 3

[0085] The difference between this embodiment and Embodiment Two is that the magnetic coating comprises resin, magnetic pigment, colorant, and diluent. The colorant is used to change the apparent color of the magnetic coating and can be pigment or dye. The preparation of the magnetic effect pre-coated strip in this embodiment specifically includes the following steps:

[0086] Step 1: Sequentially apply a base coating layer and a release layer onto the base film to obtain the first base layer;

[0087] The thickness of the base coating is 1 micrometer, and the mass ratio of resin, curing agent and diluent is 10:2:1.

[0088] The release layer is 50 micrometers thick, and the mass ratio of resin to diluent is 1:10.

[0089] Step 2: Prepare a magnetic coating on the release layer of the first base layer to obtain the second base layer, specifically including:

[0090] Step 2.1: Mix magnetic pigment, colorant, resin and diluent with a particle size of 30 micrometers, wherein the mass percentage of magnetic pigment is 20%;

[0091] Step 2.2: Apply the mixture from Step 2.1 evenly to the predetermined position on the first base layer, with a coating thickness of 26 micrometers;

[0092] Step 2.3: Perform magnetic orientation and magnetic shaping on the magnetic pigment to obtain the second base layer;

[0093] Step 3: Prepare an reinforcing coating and an adhesive backing layer on the magnetic coating of the second base layer to obtain a magnetic effect pre-coated ribbon.

[0094] The mass ratio of resin, curing agent and diluent in the reinforced coating is 10:1:1, and the coating thickness is 1 micrometer.

[0095] The mass ratio of adhesive resin to diluent in the backing layer is 10:100, and the coating thickness is 50 micrometers.

[0096] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the scope of the technology disclosed in the present invention, and such modifications or substitutions should all be covered within the scope of protection of the present invention.

Claims

1. A magnetic effect pre-coated ribbon, characterized in that: It includes a base film (1) and a plurality of coatings sequentially disposed on the base film (1); the plurality of coatings include a base coating (2), a release layer (3), a magnetic coating (6), a first reinforcing coating (7) and an adhesive layer (8) sequentially disposed from a position close to the base film (1); The base film (1) is a polymer film; The composition of the base coating (2) includes a resin, a curing agent and a diluent that are uniformly mixed in a mass ratio of 10:(1~4):(1~10) to improve the surface adhesion of the base film (1); The release layer (3) consists of a uniformly mixed resin and a diluent in a mass ratio of 10:(1 to 100), and has the functions of release and edge trimming. The magnetic coating (6) consists of a uniformly mixed resin, magnetic pigment and diluent, used to express the magnetic effect; The first reinforcing coating (7) comprises a resin, a curing agent and a diluent that are uniformly mixed in a mass ratio of 10:(1~4):(1~100) to enhance the bonding force between the magnetic coating (6) and the adhesive layer (8). The adhesive backing layer (8) comprises a uniformly mixed adhesive resin and a diluent in a mass ratio of 10:(1 to 100), used for bonding with the substrate during hot stamping.

2. The magnetic effect pre-coated ribbon according to claim 1, characterized in that: The base film (1) is a composite of one or more of PET, BOPP, PC, and PO, with a thickness of 5 to 250 micrometers; The coating thickness of each of the multiple coatings is 1 to 50 micrometers; In the base coating (2), the resin is a composite of one or more of acrylic acid, polyurethane, cellulose acetate butyrate, and epoxy resin; the curing agent is an isocyanate curing agent, melamine curing agent, or ammonia curing agent; and the diluent is compatible with the resin type. In the magnetic coating (6), the mass percentage of magnetic pigment is 0.1% to 20%, the magnetic pigment is a flake pigment, the pigment thickness is 0.1 to 5 micrometers, the particle size is 2 to 100 micrometers, and the arrangement angle is 0 to 180°.

3. The magnetic effect pre-coated ribbon according to claim 2, characterized in that: The base film (1) is made of PET material and has a thickness of 19 micrometers; The mass ratio of resin, curing agent and diluent in the base coating (2) is 10:1:5, the coating thickness is 8 micrometers, the resin is epoxy resin and the curing agent is melamine; The magnetic coating (6) contains 10% magnetic pigment by mass, has a particle size of 10 micrometers, a coating thickness of 8 micrometers, and uses acrylic resin. The first reinforcing coating (7) has a resin, curing agent and diluent mass ratio of 10:1:5, a coating thickness of 10 micrometers, and the resin is a composite of one or both of acrylic acid and polyurethane.

4. A magnetic effect pre-coated ribbon according to any one of claims 1 to 3, characterized in that: A coloring layer (4) and a second reinforcing coating (5) are also sequentially disposed between the release layer (3) and the magnetic coating (6); The coloring layer (4) is used to render different transparent colors. The components include a uniformly mixed resin, pigment and diluent. The mass ratio of resin to diluent is 10:(1~100). The resin is a composite of one or more of acrylic acid and polyurethane. The diluent is mainly used to adjust the viscosity. The pigment is a pigment or dye. The coating thickness is 1~50 micrometers.

5. The magnetic effect pre-coated ribbon according to claim 4, characterized in that: The mass ratio of resin to diluent in the coloring layer (4) is 1:2, the resin is polyurethane, and the coating thickness is 10 micrometers. In the second reinforcing coating (5), the mass ratio of resin, curing agent and diluent is 10:1:20, the resin is polyurethane, and the coating thickness is 10 micrometers.

6. A magnetic effect pre-coated ribbon according to any one of claims 1-3, characterized in that: The magnetic coating (6) also includes colorants for changing the apparent color of the magnetic coating (6).

7. A method for preparing a magnetic effect pre-coated ribbon as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Step 1: Sequentially deposit a base layer (2) and a release layer (3) on the base film (1) to obtain the first base layer; Step 2: Prepare a magnetic coating (6) on the release layer (3) of the first base layer to obtain the second base layer, specifically including: Step 2.1: Mix magnetic pigments with a particle size of 2 to 100 micrometers, resin and diluent uniformly, wherein the mass percentage of magnetic pigments is 0.1% to 20%; Step 2.2: Apply the coating evenly to the first base layer according to the preset pattern, with a coating thickness of 1-50 micrometers; Step 2.3: Perform magnetic orientation and magnetic shaping on the magnetic pigment to obtain the second base layer; Step 3: Prepare the first reinforcing coating (7) and the backing layer (8) sequentially on the magnetic coating (6) of the second base layer to obtain the magnetic effect pre-coated color strip.

8. The method for preparing a magnetic effect pre-coated ribbon according to claim 7, characterized in that: In step 1, after the base layer (2) and release layer (3) are sequentially applied on the base film (1), a coloring layer (4) and a second reinforcing layer (5) are sequentially applied on the release layer (3).

9. A printing method for the magnetic effect pre-coated ribbon according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Simultaneously move the magnetic effect pre-coated ribbon and the substrate to the bottom of the hot stamping transfer equipment; S2. The hot stamping equipment moves down and the pressure fixture on the hot stamping equipment presses the magnetic effect pre-coated ribbon onto the substrate and continues to apply pressure and heat until the adhesive layer (8) melts and the magnetic coating (6) and the substrate are bonded together. S3. Peel off the base film (1) and release layer (3) to obtain a substrate with a patterned magnetic coating (6).

10. The printing method for a magnetic effect pre-coated ribbon according to claim 9, characterized in that: In step S2, when the magnetic effect pre-coated ribbon has a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger does not have a pattern; when the magnetic effect pre-coated ribbon does not have a pattern, the pressure fixture of the multi-angle magnetic effect heat exchanger has a pattern.

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