Wiredrawing aluminum plate with pattern coating

Abstract

The utility model provides a wiredrawing aluminum plate with a pattern coating, and belongs to the technical field of aluminum plates, the wiredrawing aluminum plate with the pattern coating comprises an aluminum substrate, and a first chemical conversion film layer is arranged on one side of the aluminum substrate; the transparent protective layer is arranged on the first chemical conversion film layer; the pattern decoration layer is arranged on the transparent protection layer, the pattern decoration layer is provided with a plurality of pattern blocks which are uniformly arranged at intervals, and the plurality of pattern blocks are arranged on the transparent protection layer in an array mode. According to the wiredrawing aluminum plate with the pattern coating, the pattern decoration layer is arranged on the aluminum substrate, so that the overall decoration effect of the aluminum plate is improved, the appearance is more novel and attractive, and the scratch resistance is improved.

Description

Technical Field

[0001] This application relates to aluminum sheet technology, and particularly to a wire-drawn aluminum sheet with a pattern coating. Background Art

[0002] There are various surface treatment processes for aluminum materials. Through different treatment methods, various different effects are presented on the surface, and they are widely used in industries such as architectural decoration, electronic appliances, and modern furniture. As a metal material, aluminum itself has slightly poor scratch resistance. Therefore, how to develop an aluminum sheet with good decorative effects and scratch resistance is the research direction of each production enterprise.

[0003] In related technologies, a polyester coating is generally directly coated on the aluminum sheet. However, the polyester coating can only enhance the scratch resistance of the aluminum sheet, and the decorative effect is average. Summary of the Utility Model

[0004] This application provides a wire-drawn aluminum sheet with a pattern coating to solve the technical problems of general scratch resistance and decorative effects of aluminum sheets in related technologies.

[0005] This application provides a wire-drawn aluminum sheet with a pattern coating, including:

[0006] An aluminum substrate;

[0007] A first chemical conversion film layer provided on one side of the aluminum substrate;

[0008] A transparent protective layer provided on the first chemical conversion film layer;

[0009] A pattern decorative layer provided on the transparent protective layer, the pattern decorative layer includes a plurality of pattern blocks arranged at intervals, and the plurality of pattern blocks are arranged in an array on the transparent protective layer.

[0010] In some possible implementation manners, the pattern decorative layer includes multiple rows of the pattern blocks arranged along a first direction, and a plurality of the pattern blocks in each row are arranged in an array along a second direction, the first direction and the second direction are perpendicular, and the pattern blocks in any two adjacent rows are staggered.

[0011] In some possible implementation manners, it further includes:

[0012] A wire-drawing layer provided on the side of the aluminum substrate facing the first chemical conversion film layer, the wire-drawing layer includes a filamentous texture structure and a plurality of blank areas spaced in the filamentous texture structure;

[0013] Wherein, the plurality of blank areas are arranged in one-to-one correspondence with the plurality of pattern blocks, and the orthographic projection of the pattern block on the wire-drawing layer is located in the blank area.

[0014] In some possible embodiments, a second chemical conversion coating layer and a primer protection layer are sequentially provided on the side of the aluminum substrate facing away from the wire drawing layer.

[0015] In some possible embodiments, the thickness of the primer protection layer is 8μm - 10μm.

[0016] In some possible embodiments, the first chemical conversion coating layer and / or the second chemical conversion coating layer is a passivation layer, and the thickness of the first chemical conversion coating layer and / or the second chemical conversion coating layer is 0.5μm - 2μm.

[0017] In some possible embodiments, the thickness of the pattern decoration layer is 2μm - 11μm, and the hardness is not less than 3HB.

[0018] In some possible embodiments, the transparent protection layer is a transparent polyester coating layer, the transparent polyester coating layer covers the first chemical conversion coating layer, and the thickness of the transparent protection layer is 8μm - 11μm.

[0019] In some possible embodiments, the thickness of the transparent protection layer is 8μm - 11μm.

[0020] In some possible embodiments, the shape of the blank area is a regular polygon, and the shape of the pattern block is a centrosymmetric figure.

[0021] The wire-drawn aluminum plate with a pattern coating provided by this application uses the aluminum substrate to provide lightweight and high-strength support. The transparent protection layer covers the first chemical conversion coating layer, enhancing the surface scratch resistance of the aluminum plate and making the product not easily scratched. The pattern decoration layer located on the transparent protection layer forms a suspended three-dimensional effect together with the transparent protection layer through multiple pattern blocks of the pattern decoration layer, so that the aluminum plate has both anti-scratch and aesthetic decoration functions, enhancing the functionality and adaptability of the aluminum plate in electronic products or decorative sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0023] Figure 1 It is a schematic structural hierarchy diagram of the wire-drawn aluminum plate with a pattern coating in the embodiment of this application;

[0024] Figure 2 It is a schematic structural diagram of the wire drawing layer of the wire-drawn aluminum plate with a pattern coating in the embodiment of this application;

[0025] Figure 3 It is a schematic structural diagram of the pattern decoration layer of the wire-drawn aluminum plate with a pattern coating in the embodiment of this application.

[0026] Description of Reference Numerals

[0027] 100. Aluminum substrate;

[0028] 200, brushed layer; 201, filamentous texture structure; 202, blank area;

[0029] 300, transparent protective layer;

[0030] 400, pattern decoration layer; 401, pattern block;

[0031] 500, first chemical conversion film layer;

[0032] 600, second chemical conversion film layer; 700, primer protective layer.

[0033] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] Terms such as "first", "second", "third", "fourth", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0038] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0039] As described in the background art, with the development of production technology, aluminum plates are increasingly widely used in modern production, and various new applications and new demands drive the continuous innovation of aluminum plate technology. As a common aluminum surface treatment process, the wire drawing process has a unique metallic texture that is deeply loved by consumers. When preparing aluminum plates, a varnish or polyester coating is usually applied to the surface of the wire-drawn aluminum plate to protect the aluminum plate from being scratched and damaged.

[0040] However, the surface process of wire drawing can only provide a basic texture decoration function, and the visual performance effect is average. If you want to add pattern decoration, it is easy to be visually confused with the wire drawing, affecting the overall aesthetic effect.

[0041] Based on this, in one or more embodiments of the present application, a wire-drawn aluminum plate with a pattern coating is provided. The solutions of the embodiments of the present application will be described below with reference to the drawings.

[0042] As Figure 1 shown, the wire-drawn aluminum plate with a pattern coating in the embodiment of the present application includes an aluminum substrate 100, a first chemical conversion film layer 500, a transparent protective layer 300, and a pattern decoration layer 400.

[0043] Among them, the first chemical conversion film layer 500 is provided on one side of the aluminum substrate 100; the transparent protective layer 300 is provided on the first chemical conversion film layer 500; the pattern decoration layer 400 is provided on the transparent protective layer 300, and the pattern decoration layer 400 includes a plurality of pattern blocks 401 arranged at intervals, and the plurality of pattern blocks 401 are arranged in an array on the transparent protective layer 300.

[0044] As can be seen from the above description, for the drawn aluminum plate with a pattern coating according to the embodiment of the present application, the aluminum substrate 100 provides lightweight and high-strength support. The transparent protective layer 300 covers the first chemical conversion film layer 500, enhancing the surface scratch resistance of the drawn aluminum plate with a pattern coating, making the product not easily scratched; the pattern decoration layer 400 located on the transparent protective layer 300, through the plurality of pattern blocks 401 of the pattern decoration layer 400 and the transparent protective layer 300 together form a suspended three-dimensional effect, so that the drawn aluminum plate with a pattern coating has both anti-scratch and aesthetic decoration functions, enhancing the functionality and adaptability of the drawn aluminum plate with a pattern coating in electronic products or decorative sheet metal parts.

[0045] Further, the pattern decoration layer 400 in the embodiment of the present application includes multiple rows of pattern blocks 401 arranged along a first direction, and each row of pattern blocks 401 is arranged in an array along a second direction. The first direction and the second direction are perpendicular, and the pattern blocks 401 in any two adjacent rows are staggered.

[0046] Exemplarily, the first direction is Figure 3 the Y direction of the aluminum substrate, that is, the width direction, and the second direction is Figure 3 the X direction of the aluminum substrate, that is, the length direction. Through the above settings, the staggered pattern blocks 401 form a good visual effect, and the pattern decoration layer 400 has more three-dimensional and hierarchical senses.

[0047] In some embodiments, the drawn aluminum plate with a pattern coating further includes a wire drawing layer 200. The wire drawing layer 200 is provided on the side of the aluminum substrate 100 facing the first chemical conversion film layer 500. The wire drawing layer 200 includes a filamentous texture structure 201 and a plurality of blank areas 202 spaced in the filamentous texture structure 201; wherein, the plurality of blank areas 202 are arranged in one-to-one correspondence with the plurality of pattern blocks 401, and the orthographic projection of the pattern block 401 on the wire drawing layer 200 is located in the blank area 202.

[0048] The thickness of the wire drawing layer 200 is generally 10-20 μm. When the thickness of the wire drawing layer 200 is less than 10 μm, the texture is relatively shallow and the visual perception effect is not good; when the thickness of the wire drawing layer 200 is greater than 20 μm, higher processing technology and more processing time are required, increasing the processing cost. Therefore, on the premise of controlling the material cost, the thickness of the wire drawing layer 200 is 10-20 μm, which can make the wire drawing texture more delicate and achieve higher surface quality and decoration effect.

[0049] In addition, the aluminum substrate 100 is used to provide lightweight and high-strength support. The uniformly spaced blank areas 202 in the wire-drawing layer 200 replace the texture continuity of the wire-drawing layer 200 in the related art. The pattern decoration layer 400 located on the upper layer corresponds precisely to the blank areas 202, so that the aluminum plate not only has the unique metallic texture of wire-drawing, but also has the decorative effect of pattern blocks 401 on the surface, making it more decorative and aesthetic.

[0050] In the embodiments of the present application, the wire-drawing aluminum plate with a pattern coating can be applied to electronic products, construction projects, or vehicle decoration sheet metal parts, etc. For different application scenarios, the shape of the wire-drawing aluminum plate with a pattern coating can be adjusted accordingly, and no absolute limitation is made in the embodiments of the present application.

[0051] As Figure 2 shown, the wire-drawing layer 200 can be formed on the aluminum substrate 100 by a local wire-drawing process, and a filamentous texture structure 201 is formed by selective masking and precise processing, as long as uniformly spaced blank areas 202 can be formed on the aluminum substrate 100.

[0052] Exemplarily, a wear-resistant polyester film (Polyethylene Terephthalate Film, PET) or polyvinyl chloride (PVC) film is covered on the aluminum substrate 100, and then the aluminum substrate 100 is pattern-etched. Through laser cutting or precision engraving processes, the wire-drawing areas where the filamentous texture structure 201 is required are hollowed out on the protective film, and the unprocessed parts are the reserved blank areas 202. Then, the aluminum substrate 100 is subjected to overall mechanical wire-drawing treatment, and the hollowed wire-drawing areas are rubbed to form the filamentous texture structure 201, thereby leaving the blank areas 202.

[0053] Alternatively, a wire-drawing layer 200 is formed on the surface of the aluminum substrate 100 by a wire pattern rolling process. Specifically, raised modules that are not wire-drawn and texture modules for wire-drawing are preset on the surface of the rolling mill. Through the transfer of the rolling mill pressure, a local wire-drawing effect is formed on the surface of the aluminum substrate 100. The raised modules correspond to the blank areas 202 on the wire-drawing layer 200, and the wire-drawing texture modules correspond to the filamentous texture structures 201 on the wire-drawing layer 200. By adjusting the intervals and sizes of the raised modules and texture modules, the density of the filamentous texture structures 201 and the sizes of the blank areas 202 on the wire-drawing layer 200 are correspondingly adjusted.

[0054] In some embodiments, as Figure 1 shown, the wire-drawing aluminum plate with a pattern coating further includes a first chemical conversion film layer 500. The first chemical conversion film layer 500 is disposed between the wire-drawing layer 200 and the transparent protective layer 300, and the first chemical conversion film layer 500 covers the wire-drawing layer 200.

[0055] Further, a second chemical conversion film layer 600 and a primer protection layer 700 are sequentially provided on the side of the aluminum substrate 100 facing away from the wire drawing layer 200.

[0056] In the above embodiment, the first chemical conversion film layer 500 and / or the second chemical conversion film layer 600 is a passivation layer. The first chemical conversion film layer 500 is formed on the wire drawing layer 200 of the aluminum substrate 100 through cleaning and passivation, and the second chemical conversion film layer 600 is directly formed on the side of the aluminum substrate 100 facing away from the wire drawing layer 200 through cleaning and passivation.

[0057] Here, the thickness of the first chemical conversion film layer 500 and / or the second chemical conversion film layer 600 is 0.5 μm - 2 μm. Specifically, the thicknesses of both the first chemical conversion film layer 500 and the second chemical conversion film layer 600 are within 0.5 μm - 2 μm. For example, the thicknesses of the first chemical conversion film layer 500 and the second chemical conversion film layer 600 are 0.5 μm, 1 μm, or 2 μm.

[0058] When the thicknesses of the first chemical conversion film layer 500 and the second chemical conversion film layer 600 are less than 0.5 μm, the corrosion resistance is poor, and the bonding force with the subsequent transparent protection layer 300 and primer protection layer 700 is weak, which easily affects the overall quality of the wire-drawn aluminum plate. When the thicknesses of the first chemical conversion film layer 500 and the second chemical conversion film layer 600 are greater than 2 μm, it will increase the additional raw material cost and will, to a certain extent, affect the gloss of the wire-drawn aluminum plate. Therefore, it is preferred that the thicknesses of both the first chemical conversion film layer 500 and the second chemical conversion film layer 600 are within 0.5 μm - 2 μm.

[0059] The first chemical conversion film layer 500 and the second chemical conversion film layer 600 can adopt a silane film layer, or a zinc phosphate film layer, a chromate film layer, a fluoziric acid film layer, etc. The first chemical conversion film layer 500 covers the surface of the wire drawing layer 200, and the second chemical conversion film layer 600 covers the back side of the aluminum substrate 100. The first chemical conversion film layer 500 and the second chemical conversion film layer 600 form a dense protection layer, which has good corrosion resistance and can effectively isolate the erosion of the aluminum substrate 100 by external corrosive substances (such as acids, alkalis, salts, etc.). In a humid environment or an environment with corrosive gases, the chemical conversion protection film can significantly extend the service life of the wire-drawn aluminum plate.

[0060] In addition, the first chemical conversion film layer 500 can enhance the adhesion between the transparent protection layer 300 and the wire drawing layer 200, providing a more firm adhesion basis for the transparent protection layer 300. The second chemical conversion film layer 600 enhances the adhesion between the primer protection layer 700 and the aluminum substrate 100, providing a more firm adhesion basis for the primer protection layer 700.

[0061] In some embodiments, the primer protection layer 700 can be made of different materials according to the application scenarios, substrate types, and application environment requirements of the wire-drawn aluminum plate with a pattern coating. For example, the primer protection layer 700 can be an epoxy resin primer, a zinc-rich primer, an acrylic primer, etc. There is no absolute limitation on the material selection of the primer protection layer 700 in the embodiments of the present application.

[0062] Specifically, the thickness of the primer protection layer 700 is 8μm - 10μm. For example, the thickness of the primer protection layer 700 can be selected as 8μm, 9μm, or 10μm.

[0063] When the thickness of the primer protection layer 700 is greater than 10μm, it will increase the consumption of the coating material, raise the production cost, and also easily affect the adhesion between the primer protection layer 700 and the second chemical conversion film layer 600. When the thickness of the primer protection layer 700 is less than 8μm, it cannot effectively isolate external corrosive media (such as moisture, salt spray, acid-base substances, etc.), resulting in the corrosion of the aluminum substrate 100. Therefore, it is preferred that the thickness of the primer protection layer 700 is 8μm - 10μm.

[0064] The transparent protection layer 300 in the embodiments of the present application is a transparent polyester coating layer that covers the first chemical conversion film layer 500. The transparent polyester coating layer itself has a good shielding effect on ultraviolet rays, can prevent the direct irradiation of ultraviolet rays on the first chemical conversion film layer 500 and the aluminum substrate, and avoid its aging and discoloration. At the same time, the coating formed by the transparent polyester has a relatively high hardness, can effectively resist friction and scratching during daily use, the transparent polyester coating can reduce the generation of scratches, and maintain the smoothness of the surface of the wire-drawn aluminum plate.

[0065] Since the transparent polyester coating layer is arranged to cover the first chemical conversion film layer 500, the transparent protection layer 300 can promote the adhesion between the aluminum substrate 100 and the pattern decoration layer 400, prevent the blank area 202 from being exposed due to the local pattern block 401 not covering it, thereby avoiding the direct exposure of the aluminum substrate 100 to the air and affecting the product quality.

[0066] In addition, the transparent polyester coating layer can clearly display the patterns and textures of the wire-drawing layer 200 and the pattern decoration layer 400, does not affect the cooperation between the pattern block 401 and the filamentous texture structure 201, and can show the overall beauty of the wire-drawn aluminum plate while ensuring the protection function.

[0067] Further, colored paste particles are mixed in the transparent protective layer 300. Here, the colored paste particles are directly mixed into the polyester coating. The addition of the colored paste particles makes the transparent protective layer 300 not only a single transparent layer, but also able to present rich color levels. These colored paste particles can be particles of different colors and sizes, forming a unique visual effect. For example, fine golden particles can make the surface of the drawn aluminum plate sparkle with golden light under light irradiation, adding to the aesthetic value. Of course, the density of the added colored paste particles should not be too large to avoid overly affecting the transparency of the transparent protective layer 300.

[0068] The thickness of the transparent protective layer 300 in the above embodiments is 8μm - 11μm. Exemplarily, the thickness of the transparent protective layer 300 is 8μm, 10μm or 11μm. The transparent protective layer 300 with different thicknesses is selected according to the actual application scenario.

[0069] When the thickness of the transparent protective layer 300 is less than 8μm, it is easy to cause uneven coating and affect transparency, and the protection performance of the aluminum substrate 100 cannot be guaranteed; when the thickness of the transparent protective layer 300 is greater than 11μm, it will increase the material usage and production cost, and also extend the drying and curing time, affecting the overall production efficiency. Therefore, it is preferred that the thickness of the transparent protective layer 300 is 8μm - 11μm.

[0070] As Figure 3 shown, the pattern decoration layer 400 in the embodiments of the present application can be provided on the transparent protective layer 300 through roll printing or screen printing processes. Exemplarily, when using the screen printing process, a corresponding screen printing plate is prepared according to the designed pattern of the pattern block 401. The pattern block 401 part on the printing plate is a through hole, and the other parts are closed. The screen printing plate is attached to the transparent protective layer 300 of the aluminum substrate 100, and a squeegee is used to scrape the printing paint across the screen printing plate. The printing paint is transferred to the transparent protective layer 300 through the through holes to form the pattern decoration layer 400. Finally, the printed pattern decoration layer 400 is dried and cured to make the pattern decoration layer 400 closely adhere to the transparent protective layer 300.

[0071] Of course, the pattern of the pattern block 401 in the pattern decoration layer 400 can be flexibly designed and changed, such as various single-color patterns or shapes. In some embodiments, the printed pattern block 401 is subjected to high-temperature baking and cracking, so that the pattern block 401 has an ice flower appearance, thereby further enhancing the aesthetic effect of the pattern decoration layer 400.

[0072] The thickness of the pattern decoration layer 400 in the embodiments of the present application is 2μm - 11μm, and the hardness is not less than 3HB. Exemplarily, the thickness of the pattern decoration layer 400 is 2μm, 8μm or 11μm, and the hardness is 3HB. The pattern decoration layer 400 can be made of resin materials such as amino resin and epoxy resin or pigments, and the embodiments of the present application do not make an absolute limitation on this.

[0073] The thickness of the pattern decoration layer 400 is less than 2 μm, the three-dimensional sense and layering of the pattern blocks 401 are insufficient, the visual effect is dull, and the ideal decoration effect cannot be achieved. Moreover, the overly thin pattern decoration layer 400 has poor abrasion resistance and is likely to affect the later decoration; when the thickness of the pattern decoration layer 400 is greater than 11 μm, the surface of the drawn aluminum plate will be too rough and uneven, reducing the quality of the product. Therefore, it is preferable that the thickness of the pattern decoration layer 400 is 2 μm - 11 μm.

[0074] In some embodiments, such as Figure 2 and Figure 3 shown, the shape of the blank area 202 is a regular polygon, and the shape of the pattern block 401 is a centrosymmetric figure. Specifically, Figure 2 the shape of the blank area 202 in is a regular hexagon, and the shape of the pattern block 401 is a regular hexagon adapted to the blank area 202. Of course, the shape of the pattern block 401 can also be snowflake-shaped or other patterns.

[0075] After considering the specification and practicing the utility model disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0076] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A drawn aluminum plate with a patterned coating, characterized in that, include: Aluminum substrate; A first chemical conversion film layer is provided on one side of the aluminum substrate; a transparent protective layer, disposed on the first chemical conversion film layer; The pattern decoration layer is provided on the transparent protective layer. The pattern decoration layer comprises a plurality of pattern blocks arranged at intervals. The plurality of pattern blocks are arranged in an array on the transparent protective layer.

2. The drawn aluminum plate with a pattern coating according to claim 1, wherein The pattern decoration layer includes multiple rows of pattern blocks arranged along a first direction, multiple pattern blocks in each row are arranged in an array along a second direction, the first direction is perpendicular to the second direction, and the pattern blocks in any two adjacent rows are staggered.

3. The drawn aluminum sheet with a pattern coating according to claim 2, wherein Also includes: a wire drawing layer, disposed on a side of the aluminum substrate facing the first chemical conversion film layer, the wire drawing layer comprising a wire-like texture structure and a plurality of blank areas spaced apart in the wire-like texture structure; The plurality of blank areas are arranged in a one-to-one correspondence with the plurality of pattern blocks, and the orthographic projections of the pattern blocks on the wire drawing layer are located in the blank areas.

4. The drawn aluminum sheet with a pattern coating according to claim 3, characterized in that, A second chemical conversion film layer and a primer protection layer are sequentially provided on a side of the aluminum substrate away from the wire drawing layer.

5. The wire-drawn aluminum plate with a pattern coating according to claim 4, wherein The thickness of the primer protective layer is 8 μm-10 μm.

6. The drawn aluminum sheet with a pattern coating according to claim 4, characterized in that, The first chemical conversion film layer and / or the second chemical conversion film layer is a passivation layer, and the thickness of the first chemical conversion film layer and / or the second chemical conversion film layer is 0.5 μm-2 μm.

7. The drawn aluminum sheet with a pattern coating according to any one of claims 1 to 6, characterized in that, The thickness of the pattern decoration layer is 2 μm-11 μm, and the hardness is not less than 3HB.

8. The drawn aluminum plate with a pattern coating according to any one of claims 1 to 6, characterized in that, The transparent protective layer is a transparent polyester coating layer, and the transparent polyester coating layer covers the first chemical conversion film layer.

9. The drawn aluminum plate with a decorative coating according to claim 8, characterized in that, The thickness of the transparent protective layer is 8 μm-11 μm.

10. The drawn aluminum sheet with a pattern coating according to claim 3, characterized in that, The shape of the blank area is a regular polygon, and the shape of the pattern block is a centrally symmetrical figure.

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