Anti-fake tin-plated sheet

Abstract

The utility model relates to tinned sheet production technical field especially relates to a kind of anti-fake tinned sheet, including low-carbon substrate layer, tinning layer, anti-fake layer and laser transmission layer set gradually, the laser transmission layer can make laser from its transmission to anti-fake layer, and anti-fake pattern is processed using laser etching in anti-fake layer.The utility model is combined with the anti-fake layer of laser etching by laser transmission layer, supports directly through laser etching to generate anti-fake pattern on finished product, avoids prefabrication limit, and expands application scenario;Micron level concave-convex structure of anti-fake layer can form high-precision, difficult-to-copy anti-fake mark, and improve anti-fake effect.Laser etching does not need additional material, reduces long-term production cost;Laser transmission layer protects anti-fake pattern from physical abrasion or oxidation, while maintaining surface flatness, suitable for subsequent printing or packaging application;Laser etching process has no chemical residue, ensures safety, and can be applied to can-making, bottle cap and other scenarios.

Description

Technical Field

[0001] This utility model relates to the field of tin-plated sheet production technology, and in particular to an anti-counterfeiting tin-plated sheet. Background Technology

[0002] Traditional tin-plated sheets used for packaging materials have shortcomings. They are mostly used to affix anti-counterfeiting patterns or labels after the finished product is finished. Affixing trademarks to the outside of the finished product is costly and has poor anti-counterfeiting function. In addition, trademarks cannot be affixed to the inside of cans, and the patterns are easy to fall off and cannot be maintained.

[0003] To address this, patent specification CN221368579U discloses a tin-plated sheet with double-sided anti-counterfeiting patterns, comprising a steel substrate, tin plating layers, a glossy layer, and a transparent coating. The steel substrate has tin plating layers formed by an acidic bright tin plating process on both sides. A glossy layer is provided on the outer side of each tin plating layer. An anti-counterfeiting pattern is formed on the surface of each glossy layer by roll forming. A transparent coating is also provided on the outer side of each glossy layer. The tin plating layers, formed by the acidic bright tin plating process and combined with the glossy layers, create a glossy surface. The anti-counterfeiting pattern is formed on the surface of the glossy layer. The transparent coating fills the depressions created by the anti-counterfeiting pattern, making the glossy layer relatively smooth. This design achieves a double-sided anti-counterfeiting effect, meeting the requirements of anti-counterfeiting packaging.

[0004] However, the above-mentioned tin-plated sheets have been found to have shortcomings in use. The anti-counterfeiting patterns need to be formed by acid etching in advance, that is, they need to be pre-made during the processing. The anti-counterfeiting patterns cannot be made on the finished product, which limits the application of tin-plated sheets. Summary of the Invention

[0005] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide an anti-counterfeiting tin-plated sheet. This tin-plated sheet can be used to fabricate anti-counterfeiting patterns on the finished product, thus expanding the application of tin-plated sheets.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: An anti-counterfeiting tin-plated sheet includes a low-carbon substrate layer, a tin-plated layer, an anti-counterfeiting layer, and a laser transmission layer arranged sequentially. The laser transmission layer allows laser light to be transmitted through it to the anti-counterfeiting layer, and anti-counterfeiting patterns are processed on the anti-counterfeiting layer by laser etching.

[0007] Furthermore, in the aforementioned anti-counterfeiting tin-plated sheet, the low-carbon substrate layer is a DR material with a thickness of 0.12 to 0.15 mm, used to provide basic mechanical strength.

[0008] Furthermore, in the aforementioned anti-counterfeiting tin-plated sheet, the tin plating layer is formed by an acidic tin plating process, and the plating thickness is 1.2–1.8 g / m². 2 .

[0009] Furthermore, in the aforementioned anti-counterfeiting tin-plated sheet, the anti-counterfeiting layer is a laser-etchable metal alloy layer or a polymer material layer, with a thickness of 5–15 μm, and the etched pattern has a micron-level concave-convex structure.

[0010] Furthermore, in the aforementioned anti-counterfeiting tin-plated sheet, the laser transmission layer is a transparent coating or plastic film with a thickness of 10–30 μm.

[0011] Furthermore, in the aforementioned anti-counterfeiting tin-plated sheet, the wavelength of the laser is 900-1100nm, and the laser transmission layer is highly transparent at a wavelength of 900-1100nm.

[0012] The beneficial effects of this utility model are: This invention combines a laser-transmitting layer with a laser-etchable anti-counterfeiting layer, enabling the direct generation of anti-counterfeiting patterns on finished products via laser etching. This avoids pre-fabrication limitations and expands application scenarios. The micron-level uneven structure of the anti-counterfeiting layer forms high-precision, difficult-to-replicate anti-counterfeiting labels, enhancing the anti-counterfeiting effect. Compared to traditional labeling anti-counterfeiting, laser etching requires no additional materials, reducing long-term production costs. The laser-transmitting layer protects the anti-counterfeiting pattern from physical wear or oxidation while maintaining surface flatness, suitable for subsequent printing or packaging applications. The laser etching process leaves no chemical residue, further ensuring safety and applicable to can manufacturing, bottle cap production, and other scenarios.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the composition of this utility model; In the attached diagram, the components represented by each number are as follows: 1-Low carbon substrate layer, 2-Tin plating layer, 3-Anti-counterfeiting layer, 4-Laser transmission layer. Detailed Implementation

[0016] 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. Example 1

[0017] like Figure 1 As shown, this embodiment provides an anti-counterfeiting tin-plated sheet, including a low-carbon substrate layer 1, a tin-plated layer 2, an anti-counterfeiting layer 3, and a laser transmission layer 4 arranged sequentially. The laser transmission layer 4 enables laser light to be transmitted through it to the anti-counterfeiting layer 3, and anti-counterfeiting patterns are processed on the anti-counterfeiting layer 3 by laser etching.

[0018] In this embodiment, the low-carbon substrate layer 1 is a DR material with a thickness of 0.12 to 0.15 mm, which is used to provide basic mechanical strength.

[0019] In this embodiment, the tin plating layer 2 is formed by an acidic tin plating process, and the plating thickness is 1.2–1.8 g / m. 2 .

[0020] In this embodiment, the anti-counterfeiting layer 3 is a laser-etchable metal alloy layer with a thickness of 5 to 15 μm, and the etched pattern has a micron-level uneven structure.

[0021] In this embodiment, the laser transmission layer 4 is a transparent coating or plastic film with a thickness of 10–30 μm.

[0022] In this embodiment, the wavelength of the laser is 900 ~ 1100nm, and the laser transmission layer 4 is highly transparent at a wavelength of 900 ~ 1100nm.

[0023] One specific application of this embodiment is as follows: This invention combines a laser-transmitting layer with a laser-etchable anti-counterfeiting layer, enabling the direct generation of anti-counterfeiting patterns on finished products via laser etching. This avoids pre-fabrication limitations and expands application scenarios. The micron-level uneven structure of the anti-counterfeiting layer can form high-precision, difficult-to-replicate anti-counterfeiting labels, enhancing the anti-counterfeiting effect. Compared to traditional labeling anti-counterfeiting, laser etching requires no additional materials, reducing long-term production costs. The laser-transmitting layer protects the anti-counterfeiting pattern from physical wear or oxidation while maintaining surface flatness, suitable for subsequent printing or packaging applications. The laser etching process leaves no chemical residue, further ensuring safety and applicable to can manufacturing, bottle cap production, and other scenarios. Example 2

[0024] The difference between this embodiment and Embodiment 1 is that the anti-counterfeiting layer 3 is a polymer material layer that can be laser-etched.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A type of anti-counterfeiting tin-plated sheet, characterized in that, It includes a low-carbon substrate layer, a tin-plated layer, an anti-counterfeiting layer and a laser transmission layer arranged in sequence. The laser transmission layer allows laser light to be transmitted through it to the anti-counterfeiting layer, and anti-counterfeiting patterns are processed on the anti-counterfeiting layer by laser etching.

2. The anti-counterfeiting tin-plated sheet according to claim 1, characterized in that, The low-carbon substrate layer is a DR material with a thickness of 0.12 to 0.15 mm.

3. The anti-counterfeiting tin-plated sheet according to claim 1, characterized in that, The tin plating layer is formed by an acidic tin plating process, and the plating thickness is 1.2–1.8 g / m. 2 .

4. The anti-counterfeiting tin-plated sheet according to claim 1, characterized in that, The anti-counterfeiting layer is a laser-etchable metal alloy layer or a polymer material layer with a thickness of 5 to 15 μm. The etched pattern has a micron-level concave-convex structure.

5. The anti-counterfeiting tin-plated sheet according to claim 1, characterized in that, The laser transmission layer is a transparent coating or plastic film with a thickness of 10–30 μm.

6. The anti-counterfeiting tin-plated sheet according to claim 5, characterized in that, The wavelength of the laser is 900~1100nm, and the laser transmission layer is highly transparent at a wavelength of 900~1100nm.

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