Wiredrawing aluminum plate

Abstract

The embodiment of the utility model provides a wiredrawing aluminum plate, and relates to the technical field of aluminum plate strips. The wiredrawing aluminum plate provided by the utility model comprises a substrate, a wiredrawing aluminum layer and a passivation layer, the first surface of the substrate is used for being attached to a to-be-mounted surface, the wiredrawing aluminum layer is arranged on the second surface of the substrate, and the surface, away from the substrate, of the wiredrawing aluminum layer is provided with decorative threads; the passivation layer at least covers the surface, deviating from the substrate, of the wiredrawing aluminum layer; and the decorative threads can be exposed through the passivation layer. The substrate is arranged as a structure supporting layer, the surface flatness and the material structure stability of the substrate provide a uniform adhesion foundation for the wiredrawing aluminum layer, and the consistency of the overall surface quality is guaranteed. The wiredrawing aluminum layer and the base plate are arranged in a split mode, decorative threads do not need to be manufactured on the base plate, the decorative threads of the wiredrawing aluminum layer can penetrate through the passivation layer to be exposed, the wiredrawing aluminum layer is directly arranged on the base plate, the consistency of the visual effect presented by the wiredrawing aluminum plate is guaranteed, and the difference of wiredrawing aluminum plates of different batches can be reduced.

Description

Technical Field

[0001] This application relates to aluminum sheet and strip technology, and more particularly to a brushed aluminum sheet. Background Technology

[0002] With the development of production technology, aluminum sheets and strips are being used more and more widely in modern production. Various new applications and new demands are driving technological innovation. As a common aluminum surface treatment process, wire drawing is loved by consumers for its unique texture.

[0003] In related technologies, aluminum sheets and strips usually need to undergo anodizing after wire drawing to form a protective layer, thereby improving their surface durability.

[0004] However, anodizing can easily lead to significant surface variations between different batches of aluminum sheets and strips. Utility Model Content

[0005] In view of this, this application provides a brushed aluminum sheet that can improve the surface consistency of the brushed aluminum sheet and reduce the differences between different batches of brushed aluminum sheets.

[0006] To achieve the above objectives, this application provides a brushed aluminum sheet, which adopts the following technical solution:

[0007] This application provides a brushed aluminum plate, comprising: a substrate, a brushed aluminum layer, and a passivation layer;

[0008] The first surface of the substrate is used to attach to the surface to be mounted, the brushed aluminum layer is disposed on the second surface of the substrate, the surface of the brushed aluminum layer facing away from the substrate has decorative texture, and the first surface of the substrate is opposite to the second surface of the substrate;

[0009] The passivation layer covers at least the surface of the brushed aluminum layer facing away from the substrate; the decorative texture can be seen through the passivation layer.

[0010] The above technical solution utilizes a substrate as a structural support layer. Its surface flatness and material stability provide a uniform adhesion base for the brushed aluminum layer, ensuring consistent overall surface quality. The brushed aluminum layer is separate from the substrate, eliminating the need for decorative textures on the substrate. Furthermore, the decorative textures of the brushed aluminum layer are visible through the passivation layer. By directly applying the brushed aluminum layer to the substrate, the visual consistency of the brushed aluminum sheet is guaranteed, reducing variability between different batches. The passivation layer protects the brushed aluminum layer and further enhances its chemical stability.

[0011] In one possible implementation, the brushed aluminum plate provided in this application has the passivation layer configured as a chemically oxidized portion of the chemically oxidized brushed aluminum foil.

[0012] The brushed aluminum layer is configured as the portion of the brushed aluminum foil that has not been chemically oxidized.

[0013] In one possible implementation, the brushed aluminum plate provided in this application has a first adhesive layer disposed on the second surface of the substrate, and the substrate can be connected to the brushed aluminum layer through the first adhesive layer.

[0014] In one possible implementation, the brushed aluminum plate provided in this application has a brushed aluminum layer with a thickness greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

[0015] The thickness of the substrate is greater than or equal to 0.2 mm and less than or equal to 3.0 mm.

[0016] In one possible implementation, the brushed aluminum plate provided in this application includes a first passivation layer and a second passivation layer in the passivation layer.

[0017] The first passivation layer covers the first surface of the substrate, and the second passivation layer covers at least the surface of the brushed aluminum layer opposite to the substrate.

[0018] In one possible implementation, the brushed aluminum plate provided in this application further includes a thermal insulation layer located on the side of the brushed aluminum layer facing away from the substrate.

[0019] In one possible implementation, the brushed aluminum plate provided in this application has a second adhesive layer between the thermal insulation layer and the brushed aluminum layer, and the second adhesive layer connects the thermal insulation layer and the brushed aluminum layer.

[0020] In one possible implementation, the brushed aluminum plate provided in this application has a thermal insulation layer with a thickness greater than or equal to 8 micrometers and less than or equal to 30 micrometers.

[0021] The thickness of the second adhesive layer is greater than or equal to 1 micrometer and less than or equal to 3 micrometers.

[0022] In one possible implementation, the brushed aluminum plate provided in this application has an electrostatic film protective layer on the side of the thermal insulation layer facing away from the brushed aluminum layer.

[0023] The electrostatic film protective layer is adsorbed onto the thermal insulation layer in the first state, and is used to detach from the thermal insulation layer in the second state.

[0024] In one possible implementation, the thickness of the electrostatic film protective layer of the brushed aluminum plate provided in this application is set to be greater than or equal to 40 micrometers and less than or equal to 50 micrometers.

[0025] The brushed aluminum sheet provided in this application includes a substrate, a brushed aluminum layer, and a passivation layer. A first surface of the substrate is used to attach to the surface to be mounted. The brushed aluminum layer is disposed on a second surface of the substrate, and the surface of the brushed aluminum layer facing away from the substrate has decorative patterns. The first surface of the substrate and the second surface of the substrate are opposite each other. The passivation layer covers at least the surface of the brushed aluminum layer facing away from the substrate. The decorative patterns are visible through the passivation layer. By setting the substrate as a structural support layer, its surface flatness and material structure stability provide a uniform adhesion base for the brushed aluminum layer, ensuring the consistency of the overall surface quality. The brushed aluminum layer and the substrate are separately disposed, eliminating the need to create decorative patterns on the substrate. Furthermore, the decorative patterns of the brushed aluminum layer are visible through the passivation layer, ensuring the consistency of the visual effect presented by the brushed aluminum sheet and reducing the variability between different batches of brushed aluminum sheets. The passivation layer protects the brushed aluminum layer and further improves its chemical stability.

[0026] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the technical solutions provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0027] The specific embodiments of this application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this application, and this application is not limited to the specific embodiments described below.

[0028] Figure 1 This is a schematic diagram of the internal structure of the brushed aluminum sheet provided in this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100, Substrate; 200, Brushed aluminum layer; 300, Passivation layer; 300a, First passivation layer; 300b, Second passivation layer; 400, First adhesive layer; 500, Thermal insulation layer; 600, Second adhesive layer; 700, Electrostatic protective film layer.

[0031] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise specified precisely.

[0036] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0037] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0038] With the development of production technology, aluminum sheets and strips are being used more and more widely in modern production. Various new applications and new demands are driving technological innovation. As a common aluminum surface treatment process, wire drawing is loved by consumers for its unique texture. In related technologies, aluminum sheets and strips usually need to be painted or anodized after wire drawing to beautify them and improve their surface durability.

[0039] However, painted brushed aluminum sheets cannot meet food-grade requirements, making it impossible to place painted aluminum strips in containers that come into contact with food, thus reducing their applicability. Anodized aluminum sheets, unlike painting, undergo surface treatment using an electric current to electrolyze a conductive acidic electrolyte, causing oxidation of the aluminum metal surface that forms the anode. This results in a thick, dense protective aluminum oxide film on the aluminum surface. This oxide film is not an additional layer, does not peel off, and has high hardness, fully meeting food-grade requirements. However, the thickness or density of the oxide film formed on the surface of anodized aluminum sheets is uncontrollable, leading to significant surface variations between different batches. Furthermore, anodizing is a costly and time-consuming process.

[0040] Based on the aforementioned technical problems, this application provides a brushed aluminum plate. In this technical solution, the brushed aluminum plate includes a substrate, a brushed aluminum layer, and a passivation layer. A first surface of the substrate is used to attach to the surface to be mounted. The brushed aluminum layer is disposed on a second surface of the substrate. The surface of the brushed aluminum layer facing away from the substrate has decorative patterns. The first surface of the substrate and the second surface of the substrate are opposite each other. The passivation layer at least covers the surface of the brushed aluminum layer facing away from the substrate. The decorative patterns are visible through the passivation layer. By setting the substrate as a structural support layer, its surface flatness and material structure stability provide a uniform adhesion base for the brushed aluminum layer, ensuring the consistency of the overall surface quality. The brushed aluminum layer and the substrate are separately disposed, eliminating the need to create decorative patterns on the substrate. Furthermore, the decorative patterns of the brushed aluminum layer are visible through the passivation layer, ensuring the consistency of the visual effect presented by the brushed aluminum plate and reducing the variability between different batches of brushed aluminum plates. The passivation layer protects the brushed aluminum layer and further improves its chemical stability.

[0041] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0042] Reference Figure 1 As shown in the embodiment of this application, a brushed aluminum plate includes a substrate 100, a brushed aluminum layer 200, and a passivation layer 300.

[0043] The first surface of the substrate 100 is used to attach to the surface to be mounted. The surface to be mounted can be the inner surface or outer surface of a container, or the surface of an electrical appliance. This application does not limit the location of the surface to be mounted.

[0044] A brushed aluminum layer 200 is disposed on the second surface of the substrate 100. The surface of the brushed aluminum layer 200 facing away from the substrate 100 has decorative silk-like textures. The first surface of the substrate 100 is opposite to the second surface of the substrate 100. Here, the decorative silk-like textures of the brushed aluminum layer 200 are silk-like textures formed on the surface of the brushed aluminum layer 200, which can present a three-dimensional and high-end feel. A passivation layer 300 covers at least the surface of the brushed aluminum layer 200 facing away from the substrate 100; the decorative silk-like textures can be revealed through the passivation layer 300.

[0045] The passivation layer 300 allows the decorative brushed texture to show through. The passivation layer 300 is transparent or semi-transparent, protecting the brushed texture of the brushed aluminum layer 200 while ensuring visual consistency. This makes the texture clarity, color, and other visual effects of different batches of products more consistent, meeting consumers' demand for stable texture.

[0046] By setting the substrate 100 as a structural support layer, its surface flatness and material structure stability provide a uniform adhesion base for the brushed aluminum layer 200, ensuring the consistency of the overall surface quality. The brushed aluminum layer 200 and the substrate 100 are set separately, eliminating the need to create decorative textures on the substrate 100. Furthermore, the decorative textures of the brushed aluminum layer 200 can be revealed through the passivation layer 300, ensuring the consistency of the visual effect presented by the brushed aluminum sheet and reducing the variability between different batches of brushed aluminum sheets. The passivation layer 300 also protects the brushed aluminum layer 200 and further improves its chemical stability.

[0047] The brushed finish focuses on creating the texture of the 200mm brushed aluminum layer, while the passivation process provides independent surface protection; the two processes do not interfere with each other. The brushed finish and passivation processes are optimized separately to reduce the cross-influence of variables caused by the overlapping of processes.

[0048] In one possible implementation, the passivation layer 300 is configured as the chemically oxidized portion of the brushed aluminum foil; the brushed aluminum layer 200 is configured as the non-chemically oxidized portion of the brushed aluminum foil.

[0049] It should be noted that the brushed aluminum layer 200 is a brushed aluminum foil before passivation. Through chemical oxidation treatment of the surface of the brushed aluminum foil, the unoxidized portion remains as the brushed aluminum layer 200, while the oxidized portion forms a dense oxide layer, which is the passivation layer 300. Through this oxidation method, the passivation layer 300 and the brushed aluminum layer 200 are directly bonded, avoiding the film thickness differences caused by uneven current distribution in traditional anodizing, and significantly improving the uniformity of the oxide layer.

[0050] In one possible implementation, a first adhesive layer 400 is provided on the second surface of the substrate 100, and the substrate 100 can be connected to the brushed aluminum layer 200 through the first adhesive layer 400.

[0051] In the above embodiments, the first adhesive layer 400 serves as an intermediate transition layer, filling microscopic unevenness defects on the surface of the substrate 100, ensuring full contact between the brushed aluminum layer 200 and the substrate 100, significantly improving the adhesion strength between the two, and preventing delamination due to external force or temperature changes. The first adhesive layer 400 can be an environmentally friendly transparent thermosetting polyurethane water-based adhesive, which allows for direct bonding without complex mechanical fixing, reducing processing steps and equipment investment, and is particularly suitable for the rapid lamination of large-area or irregularly shaped substrates 100 with aluminum layers. Furthermore, using an environmentally friendly transparent thermosetting polyurethane water-based adhesive for the first adhesive layer 400 makes it suitable for food use, improving the practicality and functionality of the brushed aluminum plate.

[0052] The first adhesive layer 400 is compatible with substrates 100 of different materials, broadening the range of materials that can be selected for the substrate 100, while avoiding bonding failure caused by excessive differences in the coefficients of thermal expansion between the substrate and the brushed aluminum layer 200. In specific implementation, the substrate 100 can be an aluminum substrate 100 to ensure the consistency of the coefficients of thermal expansion of the materials.

[0053] In specific implementation, the thickness of the first adhesive layer 400 is set to be greater than or equal to 1 micrometer and less than or equal to 3 micrometers. When the thickness of the first adhesive layer 400 is less than 1 micrometer, it cannot effectively fill the microscopic unevenness defects on the surface of the substrate 100. When the thickness of the first adhesive layer 400 is greater than 3 micrometers, it will result in the substrate 100 and the brushed aluminum layer 200 being too thick after bonding, which is not conducive to the requirement of thinness. Furthermore, due to the fluidity and instability of the adhesive before curing, a thick first adhesive layer 400 may cause the substrate 100 and the brushed aluminum layer 200 to shift, affecting the quality of the finished product and even causing adhesive overflow. Preferably, the thickness of the first adhesive layer 400 is 2 micrometers, which can both fill the microscopic unevenness defects on the surface of the substrate 100 and improve the connection strength between the substrate 100 and the brushed aluminum layer 200.

[0054] In one possible implementation, the thickness of the brushed aluminum layer 200 is greater than or equal to 0.05 mm and less than or equal to 0.1 mm.

[0055] The thickness of the substrate 100 is greater than or equal to 0.2 mm and less than or equal to 3.0 mm.

[0056] In the above embodiments, the thickness of the brushed aluminum layer 200 is set to 0.05 mm-0.1 mm. This ensures that the brushing process produces clear decorative textures while avoiding insufficient strength or processing deformation caused by an excessively thin aluminum layer. Simultaneously, the 0.05 mm-0.1 mm brushed aluminum layer 200 avoids the processing difficulty and high cost of ultra-thin brushed aluminum foil, while also preventing rough brushed textures or uneven passivation layer 300 treatment caused by excessively thick brushed aluminum foil. The substrate 100, as the carrier layer, has a lower thickness that ensures sufficient mechanical support, preventing bending due to excessive thinness; and an upper thickness that prevents excessive thickness from causing material weight or increased processing difficulty, thus balancing structural stability and lightweight requirements.

[0057] In one possible implementation, the passivation layer 300 includes a first passivation layer 300a and a second passivation layer 300b;

[0058] The first passivation layer 300a covers the first surface of the substrate 100, and the second passivation layer 300b covers at least the surface of the brushed aluminum layer 200 facing away from the substrate 100.

[0059] In the above embodiments, the first passivation layer 300a covers the first surface of the substrate 100, which can block the direct corrosion of the substrate 100 by the external environment. It is especially suitable for container products that come into contact with their contents, thus extending the service life of the substrate 100. The second passivation layer 300b covers the outer surface of the brushed aluminum layer 200, enhancing the scratch resistance and oxidation resistance of the decorative texture, avoiding the problem of easy wear of traditional single-layer passivation films, and ensuring that the texture clarity and appearance consistency are maintained even after long-term use.

[0060] In one possible implementation, the brushed aluminum plate further includes a thermal insulation layer 500, which is located on the side of the brushed aluminum layer 200 away from the substrate 100.

[0061] In the above embodiments, the thermal insulation layer 500 is located on the side of the brushed aluminum layer 200 away from the substrate 100, which can effectively block heat transfer, such as the conduction of temperature differences between the inside and outside of the container, and enhance the product's environmental adaptability. By setting the thermal insulation layer 500 on the outer surface of the brushed aluminum layer 200, external impacts can be buffered, the risk of wear on the decorative texture can be reduced, the product's service life can be extended, and the consistency of the brushed aluminum plate surface can be further ensured.

[0062] In practice, the insulation layer 500 can be made of high- and low-temperature resistant PET film (polyethylene terephthalate), which has good chemical resistance and can ensure the safety and stability of the brushed aluminum plate. Alternatively, the insulation layer 500 can be made of PMP film (polymethyl methacrylate film), which is transparent and colorless, ensuring that the decorative texture of the brushed aluminum layer 200 is visible. The thickness of the insulation layer 500 is set to be greater than or equal to 8 micrometers and less than or equal to 30 micrometers. When the thickness of the insulation layer 500 is less than 8 micrometers, heat is more easily conducted within the insulation layer 500, resulting in poor insulation performance. Furthermore, an insulation layer 500 less than 8 micrometers is easily scratched, potentially exposing the brushed aluminum layer 200 underneath to the air, affecting chemical stability. When the thickness of the insulation layer 500 is greater than 30 micrometers, the insulation layer 500 is too thick, leading to a bulky product or increased processing difficulty.

[0063] In one possible implementation, a second adhesive layer 600 is provided between the thermal insulation layer 500 and the brushed aluminum layer 200, and the second adhesive layer 600 connects the thermal insulation layer 500 and the brushed aluminum layer 200.

[0064] The second adhesive layer 600 is configured to be transparent and colorable by adding colorant.

[0065] Specifically, the second adhesive layer 600 is an environmentally friendly transparent thermosetting polyurethane water-based adhesive that does not contain organic solvents, thus ensuring the stability of the second adhesive layer 600.

[0066] In the above embodiment, the second adhesive layer 600 directly connects the thermal insulation layer 500 and the brushed aluminum layer 200, forming a stable composite structure. The transparency of the second adhesive layer 600 ensures that the decorative texture of the brushed aluminum layer 200 is not obstructed.

[0067] Furthermore, the transparent adhesive layer not only fulfills the bonding requirements but also achieves a decorative function by adding colorant to adjust the color of the second adhesive layer 600. For example, colorant of any color among red, green, yellow, and blue can be added to the second adhesive layer 600, or more color effects can be achieved by appropriately mixing different colorant ratios, so that the second adhesive layer 600 can present a variety of rich and colorful appearance effects.

[0068] In practice, the thickness of the insulation layer 500 is greater than or equal to 8 micrometers and less than or equal to 30 micrometers.

[0069] The thickness of the second adhesive layer 600 is greater than or equal to 1 micrometer and less than or equal to 3 micrometers.

[0070] In the above embodiments, the insulation layer 500 with a thickness of 8 to 30 micrometers can effectively block heat conduction while avoiding material redundancy and weight increase due to excessive thickness, thus meeting the requirements for lightweighting. By setting the thickness of the second adhesive layer 600 to 1 to 3 micrometers, transparency can be achieved, ensuring that the decorative texture is visible, and color can be adjusted by adding colorant to meet personalized appearance requirements, while avoiding the uneven coloring problem caused by traditional thick adhesive layers.

[0071] In one possible implementation, an electrostatic film protective layer 700 is also provided on the side of the thermal insulation layer 500 facing away from the brushed aluminum layer 200.

[0072] In the first state, the electrostatic protective layer 700 is adsorbed onto the thermal insulation layer 500, and in the second state, the electrostatic protective layer 700 is used to detach from the thermal insulation layer 500.

[0073] Here, the electrostatic film protective layer 700 can be set as a PE electrostatic film. Covering the surface of the insulation layer 500, the electrostatic film protective layer 700 effectively prevents scratches, friction, or dust contamination during transportation and storage, ensuring the integrity of the insulation layer 500 and the decorative texture beneath it, and avoiding batch-to-batch appearance differences due to surface damage. In the second state, the electrostatic film protective layer 700 can be easily detached from the insulation layer 500 without additional cleaning or treatment, avoiding the problem of residual adhesive residue from traditional protective films and simplifying the end-use process. Furthermore, the application and removal of the electrostatic film protective layer 700 is simple, suitable for integration into automated production lines, reducing human error and improving production efficiency and batch stability.

[0074] In one possible implementation, the thickness of the electrostatic protective layer 700 is set to be greater than or equal to 40 micrometers and less than or equal to 50 micrometers. This achieves a balance between scratch protection and lightweight design.

[0075] The implementation principle of a brushed aluminum plate according to an embodiment of this application is as follows: The brushed aluminum plate includes a substrate 100, a brushed aluminum layer 200, and a passivation layer 300 arranged sequentially. The first surface of the substrate 100 is used to attach to the surface to be mounted. The brushed aluminum layer 200 is disposed on the second surface of the substrate 100. The surface of the brushed aluminum layer 200 facing away from the substrate 100 has decorative textures. The first surface of the substrate 100 and the second surface of the substrate 100 are opposite to each other. The passivation layer 300 covers at least the surface of the brushed aluminum layer 200 facing away from the substrate 100. The decorative textures can be seen through the passivation layer 300. A heat insulation layer 500 is bonded to the passivation layer 300 through a second adhesive layer 600. An electrostatic protective layer 700 is disposed on the side of the heat insulation layer 500 facing away from the second adhesive layer 600. By setting the substrate 100 as a structural support layer, its surface flatness and material structure stability provide a uniform adhesion base for the brushed aluminum layer 200, ensuring the consistency of the overall surface quality. The brushed aluminum layer 200 and the substrate 100 are set separately, so there is no need to make decorative textures on the substrate 100. The decorative textures of the brushed aluminum layer 200 can be exposed through the passivation layer 300, ensuring the consistency of the visual effect presented by the brushed aluminum plate and reducing the difference between different batches of brushed aluminum plates. The passivation layer 300 can protect the brushed aluminum layer 200 and further improve chemical stability.

[0076] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein.

[0077] The embodiments in this application are intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0078] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A brushed aluminum sheet, characterized in that, include: Substrate, brushed aluminum layer, and passivation layer; The first surface of the substrate is used to attach to the surface to be mounted, the brushed aluminum layer is disposed on the second surface of the substrate, the surface of the brushed aluminum layer facing away from the substrate has decorative texture, and the first surface of the substrate is opposite to the second surface of the substrate; The passivation layer at least covers the surface of the brushed aluminum layer opposite to the substrate; The decorative filaments are visible through the passivation layer.

2. The brushed aluminum plate according to claim 1, characterized in that, The passivation layer is configured as the chemically oxidized portion of a chemically oxidized brushed aluminum foil; The brushed aluminum layer is configured as the portion of the brushed aluminum foil that has not been chemically oxidized.

3. The brushed aluminum plate according to claim 1, characterized in that, A first adhesive layer is provided on the second surface of the substrate, and the substrate can be connected to the brushed aluminum layer through the first adhesive layer.

4. The brushed aluminum plate according to claim 1, characterized in that, The thickness of the brushed aluminum layer is greater than or equal to 0.05 mm and less than or equal to 0.1 mm; The thickness of the substrate is greater than or equal to 0.2 mm and less than or equal to 3.0 mm.

5. The brushed aluminum plate according to claim 1, characterized in that, The passivation layer includes a first passivation layer and a second passivation layer; The first passivation layer covers the first surface of the substrate, and the second passivation layer covers at least the surface of the brushed aluminum layer opposite to the substrate.

6. The brushed aluminum plate according to claim 1, characterized in that, It also includes a thermal insulation layer located on the side of the brushed aluminum layer facing away from the substrate.

7. The brushed aluminum plate according to claim 6, characterized in that, A second adhesive layer is provided between the thermal insulation layer and the brushed aluminum layer, and the second adhesive layer connects the thermal insulation layer and the brushed aluminum layer.

8. The brushed aluminum plate according to claim 7, characterized in that, The thickness of the insulation layer is greater than or equal to 8 micrometers and less than or equal to 30 micrometers; The thickness of the second adhesive layer is greater than or equal to 1 micrometer and less than or equal to 3 micrometers.

9. The brushed aluminum sheet according to any one of claims 6 to 8, characterized in that, An electrostatic film protective layer is also provided on the side of the thermal insulation layer that is away from the brushed aluminum layer; The electrostatic film protective layer is adsorbed onto the thermal insulation layer in the first state, and is used to detach from the thermal insulation layer in the second state.

10. The brushed aluminum plate according to claim 9, characterized in that, The thickness of the electrostatic film protective layer is set to be greater than or equal to 40 micrometers and less than or equal to 50 micrometers.

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