A laser composite adhesive film for card manufacturing and an anti-fake card

Abstract

The utility model discloses a kind of card-making laser composite glue film and anti-fake card, comprising: base film;Laser anti-fake layer, set on base film upper surface, include hologram or diffraction grating structure formed by embossing and / or engraved text, laser anti-fake layer is equipped with local positioning laser area and / or non-positioning laser area;Medium coating, transparent or translucent coating for coating covering on the upper surface of laser anti-fake layer;Glue coating, set on medium coating surface, for bonding with card. Composite glue film is formed by directly coating laser anti-fake layer, medium coating and glue coating on base film, and the multi-level sheet structure of anti-fake beautiful appearance is formed, manufacturing process is simplified, it is convenient for mass production, and laser anti-fake layer sets local positioning laser area, non-positioning laser area and combines engraved text, it is favorable to improve the anti-fake performance and copy difficulty of card.

Description

Technical Field

[0001] This disclosure belongs to the field of sheet structure and packaging design technology, specifically a laser composite film for card making and an anti-counterfeiting card. Background Technology

[0002] Laser cards, a type of card that combines aesthetics and anti-counterfeiting features, are widely used in daily life. However, the current manufacturing process for laser cards typically requires the creation of a dielectric film, a base film, and a transparent protective film, followed by multiple laminations and hot-pressing processes. This results in repetitive production steps, low processing efficiency, and excessively high costs. Furthermore, laser cards suffer from low anti-counterfeiting levels and poor local decorative effects, making it difficult to meet the diverse design and anti-counterfeiting requirements of sheet packaging. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this disclosure provides a laser composite adhesive film for card making, characterized in that it includes: a base film 1; a laser anti-counterfeiting layer 2, disposed on the upper surface of the base film 1, comprising an embossed holographic or diffraction grating structure and / or engraved graphics, wherein the laser anti-counterfeiting layer 2 is provided with locally positioned laser areas and / or non-positioned laser areas; a medium coating 3, which is a transparent or translucent coating applied to the upper surface of the laser anti-counterfeiting layer 2; and an adhesive coating 4, disposed on the surface of the medium coating 3, for bonding with the card.

[0004] In one embodiment, the lower surface of the base film 1 is provided with a deformation protection layer 5, which is formed by coating with a wear-resistant coating.

[0005] In one embodiment, the area ratio of the local positioning laser area to the non-positioning laser area of ​​the laser anti-counterfeiting layer 2 is 1:5 to 1:1, and the position of the local positioning laser area corresponds to the preset marking area on the card surface.

[0006] In one embodiment, the engraved graphics include microtext or patterns formed by a localized laser-etched area corresponding to the laser anti-counterfeiting layer.

[0007] In one embodiment, the interface between the dielectric coating 3 and the laser anti-counterfeiting layer 2 is assembled with a concave-convex surface structure.

[0008] In one embodiment, the adhesive coating 4 is a hot melt adhesive layer or a UV-curable adhesive layer, and a transition bonding layer is provided between the adhesive coating 4 and the medium coating 3.

[0009] In one embodiment, the base film 1 is made of PVC or PET material and has a thickness of 0.01 mm to 0.3 mm.

[0010] In one embodiment, a corona treatment layer is provided between the base film and the laser anti-counterfeiting layer 2.

[0011] In one embodiment, nano-silica particles with a particle size of 10~100nm and a content of 0.1~5wt% are dispersed in the dielectric coating 3.

[0012] This disclosure provides an anti-counterfeiting card, including a laser composite adhesive film for card making.

[0013] This disclosure provides a laser composite adhesive film for card making and an anti-counterfeiting card, which solves the problems of repetitive processes, low processing efficiency, excessively high costs, low anti-counterfeiting level, and poor local decorative effect in the prior art, and has the following technical effects:

[0014] 1. By directly coating a laser anti-counterfeiting layer, a dielectric coating, and an adhesive coating onto the base film, a multi-layer sheet structure with anti-counterfeiting and aesthetic appeal is formed, simplifying the manufacturing process and facilitating large-scale production.

[0015] 2. The introduction of deformation protection layer and dielectric coating further enhances the structural strength and stability of the composite membrane, and reduces wear and deformation.

[0016] 3. The laser anti-counterfeiting layer features locally positioned laser areas and non-positioned laser areas, combined with engraved graphics, which helps to improve the card's anti-counterfeiting performance and make it more difficult to counterfeit.

[0017] 4. The dielectric coating adopts an uneven surface structure and introduces nano-silica particles, alumina particles or silicon nitride particles, which improves the optical performance of the composite film and the connection strength between it and other layers. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a schematic diagram of the structure of a laser composite adhesive film for card making.

[0020] Key identifiers:

[0021] 1. Base film; 2. Laser anti-counterfeiting layer; 3. Medium coating; 4. Adhesive coating; 5. Deformation protection layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Laser cards, a type of card that combines aesthetics and anti-counterfeiting features, are widely used in daily life. However, the current manufacturing process for laser cards typically requires the creation of a dielectric film, a base film, and a transparent protective film, which are then bonded together by heat pressing. This results in repetitive processes, low processing efficiency, and excessively high costs. Furthermore, laser cards suffer from low anti-counterfeiting levels and poor local decorative effects, making it difficult to meet the diverse design requirements and anti-counterfeiting needs of sheet packaging.

[0024] To address the deficiencies and problems of existing technologies, this disclosure provides a laser composite adhesive film for card making and an anti-counterfeiting card having the composite film. Specific embodiments and accompanying drawings are described below. Figure 1 The present invention will be further elaborated and explained.

[0025] This disclosure provides a laser composite adhesive film for card manufacturing, comprising: a base film 1; a laser anti-counterfeiting layer 2, disposed on the upper surface of the base film 1, including an embossed holographic or diffraction grating structure and / or engraved graphics, wherein the laser anti-counterfeiting layer 2 has locally positioned laser areas and / or non-positioned laser areas; a dielectric coating 3, which is a transparent or translucent coating applied to the upper surface of the laser anti-counterfeiting layer 2; and an adhesive coating 4, disposed on the surface of the dielectric coating 3, for bonding with the card. The composite adhesive film forms a multi-layered sheet structure with anti-counterfeiting and aesthetic appeal by directly coating the laser anti-counterfeiting layer, dielectric coating, and adhesive coating onto the base film, simplifying the manufacturing process and facilitating mass production. Optionally, the base film 1 is made of PVC or PET material, with a thickness of 0.01~0.3mm, wherein both PVC and PET have good processability, impact resistance, and transparency; optionally, the dielectric coating is composed of a transparent UV-curable resin or a thermosetting resin, having good light transmittance and bonding strength.

[0026] In one embodiment, a deformation protection layer 5 is provided on the lower surface of the base film 1. The deformation protection layer 5 is formed by coating with a wear-resistant coating, which can be selected from wear-resistant coatings such as polyurethane, epoxy resin, fluoropolymer, acrylic resin, ceramic coating, polycarbonate, silica, alumina, and organosilicon modified materials. The deformation protection layer further enhances the structural strength and service stability of the composite film, reducing wear and deformation. In other embodiments, the deformation protection layer can also be provided on the upper surface of the base film.

[0027] In one embodiment, the area ratio of the locally positioned laser area to the non-positioning laser area of ​​the laser anti-counterfeiting layer 2 is 1:5 to 1:1, and the position of the locally positioned laser area corresponds to the preset marking area on the surface. This is used to enhance the anti-counterfeiting and aesthetics of the composite film through complex laser design, while also visually highlighting the preset marking area on the card surface through the locally positioned laser. The preset marking area corresponds to areas that require special attention, such as the card's identification area, magnetic stripe area, contact pad placement area, chip positioning area, and arrow indicator area. Optionally, the non-positioning laser area uses random, uniform stripes to make it difficult for counterfeiters to replicate the pattern positioning relationship.

[0028] In one embodiment, the engraved graphics include microtext or patterns formed by a localized laser area corresponding to the laser anti-counterfeiting layer. The line width of the anti-counterfeiting microtext can be selected from 10μm to 150μm. The microtext requires a high-magnification magnifying glass or special equipment for identification and is difficult to imitate. At the same time, the graphics are embedded inside the laser field, which does not affect the overall aesthetics. It also provides dual anti-counterfeiting verification points, further improving the anti-counterfeiting level of the product.

[0029] In one embodiment, the interface between the dielectric coating 3 and the laser anti-counterfeiting layer 2 is joined with a concave-convex surface structure, which further enhances the connection strength between the dielectric coating and the laser anti-counterfeiting layer. At the same time, the concave-convex surface provides optical reflection or refraction, which enhances the laser brightness of the film and the difficulty of counterfeiting.

[0030] In one embodiment, nano-sized silica particles, alumina particles, or silicon nitride particles are dispersed within the dielectric coating 3. The particle size can be selected as 10-100 nm, and the content is 0.1-5 wt%, used to increase the wear resistance, high-temperature resistance, and improve the reflection and transmission characteristics of the dielectric coating. In another embodiment, polymers such as polyester or polyimide can be added to the dielectric coating 3 as needed, serving as a flexible substrate or protective layer.

[0031] In one embodiment, to enhance the structural connection strength between layers, the adhesive coating 4 is a hot melt adhesive layer or a UV-curable adhesive layer, and a transition bonding layer is provided between the adhesive coating 4 and the dielectric coating 3. The transition bonding layer can be an aluminum-plated layer or a silane coupling agent transition layer, etc., to enhance the bonding strength and tear resistance of the composite film.

[0032] In one embodiment, a corona-treated layer is provided between the base film 1 and the laser anti-counterfeiting layer 2. The upper surface of the base film 1 is corona-treated to form a roughened layer, which is used to enhance the adhesion of the laser anti-counterfeiting layer 2.

[0033] This disclosure provides an anti-counterfeiting card, including a laser composite film for card making, suitable for making bank cards, membership cards, gift cards, art collection cards, etc., which combines aesthetic design and anti-counterfeiting performance.

[0034] The above provides a detailed description of a laser composite adhesive film for card making and an anti-counterfeiting card provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea and method of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A laser composite adhesive film for card making, characterized in that, include: Base film (1); A laser anti-counterfeiting layer (2) is disposed on the upper surface of the base film (1) and includes a holographic or diffraction grating structure formed by embossing and / or engraved graphics. The laser anti-counterfeiting layer (2) is provided with a local positioning laser area and / or a non-positioning laser area. The medium coating (3) is a transparent or semi-transparent coating applied to the upper surface of the laser anti-counterfeiting layer (2); An adhesive coating (4) is disposed on the surface of the medium coating (3) for bonding with the card.

2. The laser composite adhesive film for card making according to claim 1, characterized in that, The lower surface of the base film (1) is provided with a deformation protection layer (5), which is formed by coating with a wear-resistant coating.

3. The laser composite adhesive film for card making according to claim 1, characterized in that, The ratio of the area of ​​the local positioning laser area to the area of ​​the non-positioning laser area of ​​the laser anti-counterfeiting layer (2) is 1:5 to 1:1, and the position of the local positioning laser area corresponds to the preset marking area on the card surface.

4. The laser composite adhesive film for card making according to claim 1, characterized in that, The engraved graphics include microtext or patterns formed by localized laser lithography areas corresponding to the laser anti-counterfeiting layer.

5. The laser composite adhesive film for card making according to claim 1, characterized in that, The interface between the medium coating (3) and the laser anti-counterfeiting layer (2) is joined with a concave-convex surface structure.

6. The laser composite adhesive film for card making according to claim 1, characterized in that, The adhesive coating (4) is a hot melt adhesive layer or a UV-curable adhesive layer, and a transition adhesive layer is provided between the adhesive coating (4) and the medium coating (3).

7. The laser composite adhesive film for card making according to claim 1, characterized in that, The base film (1) is made of PVC or PET material and has a thickness of 0.01 mm to 0.3 mm.

8. The laser composite adhesive film for card making according to claim 1, characterized in that, A corona treatment layer is provided between the base film and the laser anti-counterfeiting layer (2).

9. The laser composite adhesive film for card making according to claim 1, characterized in that, The dielectric coating (3) contains nano-silica particles, alumina particles, or silicon nitride particles.

10. An anti-counterfeiting card, characterized in that, Includes the laser composite adhesive film for card making as described in any one of claims 1-9.

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