Composite anticorrosive tile

Abstract

The application relates to a composite anticorrosive tile, a lower surface of a metal substrate layer is hot melt connected with a lower surface layer through a second adhesive layer; an upper surface layer is located above the metal substrate layer, and an arrayed stripe groove is arranged on the upper surface layer; the stripe groove is a convex groove or a concave groove; the upper surface layer is hot melt connected with the metal substrate layer through a first adhesive layer; a color coating layer is attached to an upper surface of the upper surface layer; the color coating layer has a glossiness of 10-30 degrees; the upper surface layer and the lower surface layer have the same size, and a projection of the metal substrate layer on the lower surface layer is located in the lower surface layer; through the above arrangement, the upper surface layer is diffusely reflective to avoid light pollution; in addition, the stripe groove plays a role in anti-skid, increases the contact area with the first adhesive layer, strengthens the bonding strength of the upper surface layer and the metal substrate layer, and disperses stress; the part of the upper surface layer more than the two sides of the metal substrate layer and the part of the lower surface layer more than the two sides of the metal substrate layer are hot melt bonded together, isolate the metal substrate layer, and form a continuous and complete physical isolation barrier.

Description

Technical Field

[0001] This application relates to the field of anti-corrosion roofing sheet technology, and in particular to a composite anti-corrosion roofing sheet. Background Technology

[0002] Currently, color steel plates are an economical and practical building and decorative panel. There are many types, but they are not complicated. The base material is mostly cold-rolled steel plate or hot-dip galvanized base material, and the coating is mostly polyester, silicone-modified polyester, polyvinylidene fluoride, etc. During long-term use, the surface coating is affected by external forces such as light, temperature difference, humidity difference, water accumulation, acid corrosion, pollutants, airflow, hail, etc., which often cause surface cracking, fading, corrosion, etc. This not only affects the overall appearance of the building, but also causes incalculable damage to the building structure and environmental pollution.

[0003] In marine environments, the combined effects of complex environmental characteristics and climatic factors such as sunlight, temperature, humidity, salt spray, precipitation, and wind on steel structures greatly exacerbate corrosion, leading to serious economic losses and safety hazards.

[0004] When enterprises that produce corrosive substances, such as chemical plants, salt chemical plants, pickling plants, smelting plants, paper mills, printing and dyeing plants, use color steel plates as wall and roof panels, it is necessary to ensure their functionality. Sometimes they need to be replaced once a year, and even in enterprises with strong corrosiveness, they need to be replaced every few months. Otherwise, normal production cannot be maintained and personal safety cannot be guaranteed.

[0005] In related technologies, multi-layer composite tiles are used to solve the above problems, which have the effects of heat insulation, corrosion resistance and noise reduction, but the following problems still exist:

[0006] An unreasonable weight distribution of each layer of material can affect the flexibility of the composite board, making it more prone to creases or cracks during installation, increasing the difficulty of installation; and it can also prevent the functions and performance of each layer of material from being fully utilized, which may cause conflicts between them.

[0007] The surface reflectivity of the upper material is high, which can cause some light pollution; in addition, during construction and maintenance, the smooth surface of the composite tile poses a risk of slipping when maintenance personnel walk on it. Summary of the Invention

[0008] This application provides a composite anti-corrosion tile to solve the problems in related technologies where the surface reflectivity of the upper material is high, which can cause light pollution; in addition, during construction and maintenance, the smooth surface of the composite tile poses a risk of slipping when maintenance personnel walk on it.

[0009] In a first aspect, a composite anti-corrosion roofing sheet is provided, comprising:

[0010] A metal substrate layer, the lower surface of which is thermally bonded to a lower surface layer via a second adhesive layer;

[0011] The upper surface layer is located above the metal substrate layer and has an array of striped grooves, which are raised grooves or recesses; the upper surface layer is thermally fused to the metal substrate layer through a first adhesive layer; a colored paint layer is attached to the upper surface of the upper surface layer; the gloss of the colored paint layer is 10-30 degrees.

[0012] The upper and lower surfaces have the same dimensions, and the metal substrate layer is projected onto the lower surface layer and lies within the lower surface layer.

[0013] In some embodiments, when the stripe groove is a recess, the recessed direction of the stripe groove has an angle with the direction perpendicular to the upper surface layer; the angle is an acute angle.

[0014] In some embodiments, when the stripe groove is a recess, the recessed direction of the stripe groove is perpendicular to the upper surface layer.

[0015] In some embodiments, a closed loop is formed between the outer periphery of the upper surface layer and the outer periphery of the lower surface layer through a first adhesive layer and a second adhesive layer to isolate the metal substrate layer from the outside air.

[0016] In some embodiments, the upper surface layer includes color-coated aluminum foil, color-coated stainless steel foil, or color-coated copper foil;

[0017] Both the first adhesive layer and the second adhesive layer include a hot melt adhesive film;

[0018] The metal substrate layer includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate.

[0019] The lower surface layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0020] In some embodiments, the thickness of the upper surface layer is 0.08~0.2mm; the thickness of the metal substrate layer is 0.4~1.0mm; the thickness of the lower surface layer is 0.08~0.2mm; and the thicknesses of the first adhesive layer, the second adhesive layer, and the third adhesive layer are all 0.02~0.2mm.

[0021] In some embodiments, an intermediate layer and a third adhesive layer are disposed between the first adhesive layer and the metal substrate layer, and from top to bottom;

[0022] The outer periphery of the intermediate layer and the outer periphery of the lower surface layer form a closed loop through a second adhesive layer and a third adhesive layer to isolate the metal substrate layer from the outside air.

[0023] In some embodiments, the upper surface layer includes color-coated aluminum foil, color-coated stainless steel foil, or color-coated copper foil; the metal substrate layer includes aluminum-zinc plate, aluminum-magnesium-manganese plate, or stainless steel plate.

[0024] The first adhesive layer, the second adhesive layer, and the third adhesive layer all include a hot melt adhesive film;

[0025] The intermediate layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0026] The lower surface layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0027] In some embodiments, the upper surface layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0028] The metal substrate layer includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate.

[0029] The first adhesive layer, the second adhesive layer, and the third adhesive layer all include a hot melt adhesive film;

[0030] The intermediate layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0031] The lower surface layer includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0032] In some embodiments, the thickness of the upper surface layer is 0.06~0.10mm; the thickness of the metal substrate layer is 0.4~1.0mm; the thickness of the lower surface layer is 0.08~0.2mm; the thickness of the first adhesive layer, the second adhesive layer and the third adhesive layer is 0.02~0.2mm; and the thickness of the intermediate layer is 0.08~0.13mm.

[0033] The beneficial effects of the technical solution provided in this application include:

[0034] This application provides a composite anti-corrosion tile. A lower surface layer is thermally bonded to the lower surface of a metal substrate layer via a second adhesive layer. An upper surface layer is located above the metal substrate layer and has an array of striped grooves, which are either raised grooves or recessed grooves. The upper surface layer is thermally bonded to the metal substrate layer via a first adhesive layer. A colored paint layer is attached to the upper surface of the upper surface layer. The gloss of the colored paint layer is 10-30 degrees. The upper and lower surface layers have the same size, and the projection of the metal substrate layer onto the lower surface layer is located within the lower surface layer. This configuration allows the upper surface layer to diffusely reflect light, avoiding light pollution. Furthermore, the striped grooves not only provide anti-slip properties but also increase the contact area with the first adhesive layer, strengthening the bond between the upper surface layer and the metal substrate layer and dispersing stress.

[0035] In addition, the upper and lower surface layers are the same size, and the projection of the metal substrate layer on the lower surface layer is located within the lower surface layer; this allows the portion of the upper surface layer that extends beyond the two sides of the metal substrate layer to be thermally bonded together with the portion of the lower surface layer that extends beyond the two sides of the metal substrate layer, forming a sealed and effective protection for the metal substrate layer, creating a continuous and complete physical barrier, and improving the corrosion resistance. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 The sheet material provided in this application embodiment has not been subjected to pressure rollers;

[0038] Figure 2 The anti-corrosion coated tile provided in the embodiments of this application has been subjected to pressure rollers;

[0039] Figure 3 A schematic diagram illustrating the principle of enhanced adhesion when the stripe groove is a recessed groove, as provided in the embodiments of this application;

[0040] Figure 4 A schematic cross-sectional view of the composite anti-corrosion tile of the first structure provided in this application embodiment before edge sealing;

[0041] Figure 5 A cross-sectional schematic diagram of the first type of composite anti-corrosion tile provided in the embodiments of this application;

[0042] Figure 6 A schematic cross-sectional view of the composite anti-corrosion tile with the second structure provided in the embodiments of this application before edge sealing;

[0043] Figure 7 A cross-sectional schematic diagram of the second type of composite anti-corrosion tile provided in the embodiments of this application;

[0044] Figure 8 Provided for the embodiments of this application Figure 7 A schematic diagram showing the replacement of medium-coated aluminum foil with a high-weather-resistant resin film.

[0045] In the figure: 1. Top surface layer; 2. First adhesive layer; 3. Metal substrate layer; 4. Second adhesive layer; 5. Bottom surface layer; 6. Stripe groove; 7. Intermediate layer; 8. Third adhesive layer. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] This application provides a composite anti-corrosion tile to solve the problems in related technologies where the surface reflectivity of the upper material is high, which can cause light pollution; in addition, during construction and maintenance, the smooth surface of the composite tile poses a risk of slipping when maintenance personnel walk on it.

[0048] Please see Figures 1-4 A composite anti-corrosion roofing sheet, comprising:

[0049] The metal substrate layer 3 has a lower surface layer 5 that is thermally bonded to its lower surface by a second adhesive layer 4.

[0050] The upper surface layer 1 is located above the metal substrate layer 3 and has an array of striped grooves 6, which are raised grooves or recesses; the upper surface layer 1 is thermally fused to the metal substrate layer 3 through the first adhesive layer 2; a colored paint layer is attached to the upper surface of the upper surface layer 1; the gloss of the colored paint layer is 10-30 degrees. Figure 4 The intermediate color paint layer is marked as A; Figure 1 and Figure 2 In the middle, B indicates a sheet material that has not been pressed by the roller, and C indicates a laminated anti-corrosion tile that has been pressed by the roller.

[0051] The upper surface layer 1 and the lower surface layer 5 have the same size, and the metal substrate layer 3 is projected onto the lower surface layer 5 and located within the lower surface layer 5.

[0052] The above settings enable the upper surface layer 1 to diffuse reflect light and avoid light pollution. In addition, its striped grooves 6 not only serve as an anti-slip surface, but also increase the contact area with the first adhesive layer 2, thereby strengthening the bond strength between the upper surface layer 1 and the metal substrate layer 3 and dispersing stress.

[0053] Furthermore, a closed loop is formed between the outer periphery of the upper surface layer 1 and the outer periphery of the lower surface layer 5 through the first adhesive layer 2 and the second adhesive layer 4, ensuring complete sealing and isolating the metal substrate layer 3 from the outside air. That is, with the upper surface layer 1 and the lower surface layer 5 having the same dimensions, and the metal substrate layer 3 projecting onto the lower surface layer 5 within the lower surface layer 5, the portions of the upper surface layer 1 extending beyond the sides of the metal substrate layer 3 and the portions of the lower surface layer 5 extending beyond the sides of the metal substrate layer 3 are thermally bonded together through the first adhesive layer 2 and the second adhesive layer 4, forming a sealed and effective protection for the metal substrate layer 3. This creates a continuous and complete physical barrier, enhancing the corrosion resistance.

[0054] In some preferred embodiments, the stripe groove 6 is configured as follows:

[0055] In the first case, when the stripe groove 6 is a recess, the recessed direction of the stripe groove 6 is perpendicular to the upper surface layer 1.

[0056] The second type is when the stripe groove 6 is a groove, the recessed direction of the stripe groove 6 has an angle with the direction perpendicular to the upper surface layer 1; the angle is an acute angle; such as 30°-60°.

[0057] The second form is preferred in this application, see reference. Figure 3 As shown, since there is an angle between the recessed direction of the stripe groove 6 and the direction perpendicular to the upper surface layer 1, according to the theorem that the hypotenuse of a right triangle is greater than the right-angled side, the depth of the recessed stripe groove 6 increases. Therefore, the contact area further increases, and the bonding strength between the upper surface layer 1 and the metal substrate layer 3 also further increases. When the stripe groove 6 is a recess, it can be achieved using a pressing process.

[0058] In some preferred embodiments, the following two specific products are disclosed for different use scenarios, and their weight distribution is adjusted to solve the problems of warping, increased overall product volume, delamination, or detachment caused by uneven weight distribution of multilayer materials. The specific reasons for these problems are as follows:

[0059] In terms of performance: The metal substrate layer 3 is the main supporting structure of the product. If the weight distribution is unreasonable and its weight proportion is significantly reduced, it means a reduction in thickness and strength. For example, reducing the thickness of the 0.8mm thick aluminized zinc plate to 0.4mm to achieve even weight distribution will significantly reduce its bending strength, tensile strength, and corrosion resistance. When bearing large wind loads, snow loads, or being corrosive, the metal substrate may not be able to provide sufficient support and protection, leading to a decrease in the structural stability of the entire composite panel and making it prone to deformation, cracking, or even corrosion perforation.

[0060] The primary function of the upper surface layer 1 is to provide decoration and initial protection. An unreasonable weight distribution can increase its thickness and weight, which, while potentially improving protective performance, is limited by material properties and cost. For example, increasing the thickness of the color-coated aluminum foil from 0.1mm to 0.2mm not only increases material costs but may also lead to problems such as coating cracking and peeling, thus reducing its protective effect. Furthermore, an excessively thick upper surface layer 1 increases the overall weight, affecting the product's portability and ease of installation.

[0061] The lower layer 5 is responsible for enhancing the product's weather resistance, water resistance, and sealing performance. If the weight is evenly distributed, resulting in a reduction in its thickness, such as reducing the 0.15mm thick PVDF high weather-resistant resin film to 0.08mm, it will weaken its ability to resist environmental factors such as ultraviolet rays and acid rain, reduce sealing performance, and make it easier for moisture and corrosive media to penetrate into the metal substrate, thus shortening the product's service life.

[0062] In terms of cost:

[0063] An unbalanced weight distribution among the layers may necessitate the use of more expensive materials or increased material quantities. For example, to increase weight in the upper layer, thicker coated stainless steel foil or a larger amount of paint may be required, significantly increasing material costs. Similarly, for the lower layer 5, achieving a certain weight may require a higher density or thicker resin film, also increasing costs.

[0064] An unreasonable weight distribution of each material layer may necessitate adjustments to the production process. For example, increasing the thickness of the top layer 1 may require more precise melt-bonding processes and cooling and winding equipment to ensure a uniform coating without cracking. Simultaneously, thinning the metal substrate layer may require higher processing precision and stricter production environment control to prevent deformation or damage during processing, all of which increase processing costs.

[0065] An unreasonable weight distribution among the layers increases the relative thickness and volume of each layer, leading to a larger overall product volume and a smaller quantity of product per unit volume. During transportation, this requires more packaging materials and transport space, reducing efficiency and increasing costs. Although the overall weight may not change significantly after evenly distributing the weight among the layers, differences in material properties can affect the product's installation performance. For example, a thicker top layer may affect the flexibility of the laminate, making it more prone to creases or cracks during installation, increasing installation difficulty. Conversely, a thinner metal substrate layer may require more precise installation techniques to ensure a tight connection with the supporting structure, preventing loosening or detachment during use.

[0066] Regarding collaboration between different layers:

[0067] An unreasonable weight distribution among the layers can prevent each layer from fully realizing its function and performance, and may cause conflicts between them. For example, if the upper layer is thickened to increase weight, it may result in insufficient adhesion between it and the metal substrate, leading to delamination or detachment. If the lower layer is thickened to meet weight requirements, it may increase the difference in thermal expansion coefficients between it and the metal substrate, causing warping or deformation when the temperature changes, thus affecting the overall performance and appearance quality of the product.

[0068] To address the above issues, the weight is ultimately reflected in the thickness parameter, and the following settings were made:

[0069] refer to Figure 4 Figure 5 The first type, the upper surface layer 1 includes color-coated aluminum foil, color-coated stainless steel foil or color-coated copper foil;

[0070] Both the first adhesive layer 2 and the second adhesive layer 4 include a hot melt adhesive film;

[0071] The metal substrate layer 3 includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate.

[0072] The lower layer 5 includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0073] The thickness of the upper surface layer 1 is 0.08~0.2mm; the thickness of the metal substrate layer 3 is 0.4~1.0mm; the thickness of the lower surface layer 5 is 0.08~0.2mm; and the thicknesses of the first adhesive layer 2, the first adhesive layer 2 and the third adhesive layer 8 are all 0.02~0.2mm.

[0074] refer to Figure 6 and Figure 7The second type is an enhanced version of the first type. In this type, an intermediate layer 7 and a third adhesive layer 8 are disposed between the first adhesive layer 2 and the metal substrate layer 3, and from top to bottom. The outer periphery of the intermediate layer 7 and the outer periphery of the lower surface layer 5 form a closed ring through the second adhesive layer 4 and the third adhesive layer 8 to isolate the metal substrate layer 3 from the outside air.

[0075] See Figure 7 The upper surface layer 1 includes color-coated aluminum foil, color-coated stainless steel foil, or color-coated copper foil; the metal substrate layer 3 includes aluminized zinc plate, aluminum-magnesium-manganese plate, or stainless steel plate; the first adhesive layer 2, the second adhesive layer 4, and the third adhesive layer 8 all include hot melt adhesive film; the middle layer 7 includes a high weather-resistant resin film, which is made of one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE. This enhances the product's weather resistance and adds an extra layer of protection, achieving extended sealing of the middle layer. The double sealing enhances the anti-permeability capability in high-humidity coastal environments; the lower surface layer 5 includes a high weather-resistant resin film, which is made of one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0076] See Figure 8 Alternatively, it could be: the upper layer 1 includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE; the metal substrate layer 3 includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate; the first adhesive layer 2, the second adhesive layer 4, and the third adhesive layer 8 all include a hot melt adhesive film; the middle layer 7 includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE; and the lower layer 5 includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

[0077] The thickness of the upper surface layer 1 is 0.06~0.10mm; the thickness of the metal substrate layer 3 is 0.4~1.0mm; the thickness of the lower surface layer 5 is 0.08~0.2mm; the thickness of the first adhesive layer 2, the second adhesive layer 4 and the third adhesive layer 8 is 0.02~0.2mm; and the thickness of the intermediate layer 7 is 0.08~0.13mm.

[0078] The above settings allow for adjusting the thickness of each layer in different scenarios to suit various needs; details are as follows:

[0079] The first structure (without an intermediate layer) is suitable for highly corrosive environments;

[0080] Applicable scenarios: High-temperature and highly corrosive chemical environments such as blast furnace workshops in steel plants, fertilizer plants, chemical plants, smelting workshops, and electroplating workshops.

[0081] Explanation of the reason:

[0082] Metal top layer (color-coated aluminum foil / stainless steel foil / copper foil):

[0083] It provides a rigid protective barrier to resist strong acid / alkali corrosion (such as acid mist in chemical plants and metal dust in smelting workshops), and the metal material is resistant to high temperatures (temperature in blast furnace workshops > 150℃).

[0084] The metal substrate layer is relatively thick (0.4-1.0 mm):

[0085] Enhance structural strength to withstand mechanical impacts in heavy industrial settings (such as falling objects during equipment maintenance).

[0086] Simplified structure without intermediate layers:

[0087] Reduce the risk of delamination caused by differences in interlayer thermal expansion under high-temperature conditions and improve long-term stability.

[0088] The second structure (including an intermediate layer) is suitable for coastal and general industrial environments.

[0089] Applicable scenarios: Coastal factories, automobile manufacturing, machinery manufacturing, food processing and other high humidity and moderately corrosive environments.

[0090] Explanation of the reason:

[0091] Resin top layer (PE / TPO / PVDF, etc.):

[0092] It possesses excellent resistance to salt spray (coastal chloride ion corrosion) and UV aging (ASA / PVDF resin), preventing electrochemical corrosion of metal surfaces in humid environments.

[0093] Intermediate layer (0.08-0.13mm high weather-resistant resin):

[0094] It forms a double anti-corrosion barrier, blocking the penetration of corrosive media (such as oil stains from automobile factories and organic acids from food factories).

[0095] Overall lightweight design:

[0096] The upper surface layer is thinned (0.06-0.10mm) to reduce weight and meet the load-bearing requirements of large-span factory roofs.

[0097] The following table provides a comparative explanation:

[0098]

[0099] The production process for the first product is as follows:

[0100] S1. The upper surface layer 1 is laminated with a hot melt adhesive film by melting, and then cooled and rolled up.

[0101] S2, the lower layer 5 has the same manufacturing process as the upper layer 1.

[0102] S3. The upper surface layer roll 1 and the lower surface layer roll 5, coated with hot melt adhesive film, are simultaneously unrolled and bonded to the metal substrate layer 3 via high-temperature hot melt rolling. While the upper and lower surface layers are hot-melt bonded to the metal substrate layer 3, the portions of the upper surface layer extending beyond the sides of the metal substrate layer 3 are also hot-melt bonded together, forming an effective and continuous physical barrier to protect the metal substrate. This achieves an all-around anti-corrosion and sealing effect on the sides and surface coating of the tile. This structural design not only effectively isolates moisture and corrosive media penetration but also enhances the mechanical strength of the edging structure through stress dispersion design, enabling the tile to maintain excellent sealing integrity and weather resistance even under long-term exposure to sunlight, rain, and temperature deformation.

[0103] The production process for the second product is similar to that of the first product, except that the intermediate layer is laminated to the upper surface layer 1 by melting.

[0104] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0105] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0106] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A composite anti-corrosion roofing sheet, characterized in that, It includes: The metal substrate layer (3) has a lower surface layer (5) that is thermally bonded to its lower surface by a second adhesive layer (4). The upper surface layer (1) is located above the metal substrate layer (3) and has an array of stripe grooves (6) on it, the stripe grooves (6) being raised grooves or recesses; the upper surface layer (1) is thermally fused to the metal substrate layer (3) through a first adhesive layer (2); a colored paint layer is attached to the upper surface of the upper surface layer (1); the gloss of the colored paint layer is 10-30 degrees; The upper surface layer (1) and the lower surface layer (5) are the same size, and the metal substrate layer (3) is projected onto the lower surface layer (5) and located within the lower surface layer (5).

2. The composite anti-corrosion roofing sheet as described in claim 1, characterized in that: When the stripe groove (6) is a groove, the recessed direction of the stripe groove (6) has an angle with the direction perpendicular to the upper surface layer (1); the angle is an acute angle.

3. The composite anti-corrosion roofing sheet as described in claim 2, characterized in that: When the stripe groove (6) is a groove, the recessed direction of the stripe groove (6) is perpendicular to the upper surface layer (1).

4. The composite anti-corrosion roofing sheet as described in claim 1, characterized in that: The outer periphery of the upper surface layer (1) and the outer periphery of the lower surface layer (5) form a closed ring through the first adhesive layer (2) and the second adhesive layer (4) to isolate the metal substrate layer (3) from the outside air.

5. The composite anti-corrosion roofing sheet as described in claim 1, characterized in that: The upper surface layer (1) includes color-coated aluminum foil, color-coated stainless steel foil or color-coated copper foil; Both the first adhesive layer (2) and the second adhesive layer (4) include a hot melt adhesive film; The metal substrate layer (3) includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate. The lower surface layer (5) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

6. The composite anti-corrosion roofing sheet as described in claim 5, characterized in that: The thickness of the upper surface layer (1) is 0.08~0.2mm; the thickness of the metal substrate layer (3) is 0.4~1.0mm; the thickness of the lower surface layer (5) is 0.08~0.2mm; and the thicknesses of the first adhesive layer (2), the second adhesive layer (4) and the third adhesive layer (8) are all 0.02~0.2mm.

7. The composite anti-corrosion roofing sheet as described in claim 1, characterized in that: Between the first adhesive layer (2) and the metal substrate layer (3), and from top to bottom, there is also an intermediate layer (7) and a third adhesive layer (8). The outer periphery of the intermediate layer (7) and the outer periphery of the lower surface layer (5) form a closed ring through the second adhesive layer (4) and the third adhesive layer (8) to isolate the metal substrate layer (3) from the outside air.

8. The composite anti-corrosion roofing sheet as described in claim 7, characterized in that: The upper surface layer (1) includes color-coated aluminum foil, color-coated stainless steel foil or color-coated copper foil; the metal substrate layer (3) includes aluminum-zinc plate, aluminum-magnesium-manganese plate or stainless steel plate. The first adhesive layer (2), the second adhesive layer (4) and the third adhesive layer (8) all include a hot melt adhesive film; The intermediate layer (7) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE. The lower surface layer (5) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

9. The composite anti-corrosion roofing sheet as described in claim 7, characterized in that: The upper surface layer (1) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE. The metal substrate layer (3) includes an aluminum-zinc plate, an aluminum-magnesium-manganese plate, or a stainless steel plate. The first adhesive layer (2), the second adhesive layer (4) and the third adhesive layer (8) all include a hot melt adhesive film; The intermediate layer (7) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE. The lower surface layer (5) includes a high weather-resistant resin film, which is made by laminating one or more of PE, TPO, PVC, ASA, PVDF, PET, and ETFE.

10. The composite anti-corrosion roofing sheet as described in claim 9, characterized in that: The thickness of the upper surface layer (1) is 0.06~0.10mm; the thickness of the metal substrate layer (3) is 0.4~1.0mm; the thickness of the lower surface layer (5) is 0.08~0.2mm; the thickness of the first adhesive layer (2), the second adhesive layer (4) and the third adhesive layer (8) is 0.02~0.2mm; and the thickness of the intermediate layer (7) is 0.08~0.13mm.

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