Stainless steel decorative plate for automobile

Abstract

The utility model discloses a stainless steel decorative plate for an automobile, which comprises a heat insulation layer, a black glue layer, a transparent PET (polyethylene terephthalate) layer, a color layer and a protective film layer which are sequentially arranged on one surface of a stainless steel base material layer in the thickness direction from inside to outside, and the color layer is a paint layer. Due to the arrangement of the transparent PET layer, when the stainless steel decorative plate is bent, the bent corner does not turn white, meanwhile, paint of different colors can be selected for the color layer according to the actual situation, the color vividness of the decorative plate is improved, in addition, due to the arrangement of the black glue, the color of the stainless steel decorative plate is consistent, and the attractiveness of the decorative plate is further improved. And the protection film layer is arranged, so that the protection on the outer layer of the decorative plate can be improved, and a protection film can be torn off during use.

Description

Technical Field

[0001] This utility model relates to the field of color steel plate technology, and in particular to stainless steel decorative plates for automobiles. Background Technology

[0002] Steel plates are now widely used in industry and daily life, especially thin plates, which are used in automobiles, refrigerators, washing machines, and high-end room partitions, among other things.

[0003] Stainless steel exterior trim parts for automobiles are increasingly sought after by consumers due to their strong surface corrosion resistance and high-quality and beautiful appearance. In order to meet consumer demand, major car manufacturers have added a large number of such decorative parts to the non-functional areas of the car body. The main parts include window frame trims, door handle trims, door welcome panels, SUV pedal trims and other products.

[0004] Existing automotive exterior steel panels are generally made by spraying paint onto the surface of a stainless steel substrate. Chinese Patent Publication No. CN118927727A discloses a stainless steel decorative panel for automobiles, comprising a stainless steel substrate layer and, sequentially disposed on one surface of the stainless steel substrate layer from the inside out, a steel protective layer, an adhesive layer, a protective film layer, and an outer coating. The steel protective layer is a chromium-free, phosphorus-free, and formaldehyde-free steel plate protective layer, and the outer coating is a paint coating. This meets environmental protection requirements and improves the protection of the substrate layer. However, the above-mentioned automotive stainless steel decorative panel still has some problems, such as the steel plate turning white at the bending angle when the panel is bent, thus reducing the aesthetics of the panel. Therefore, it is necessary to provide a new automotive stainless steel decorative panel to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve at least one of the above-mentioned technical problems, the purpose of this utility model is to provide a stainless steel decorative panel for automobiles that does not turn white when bent, has an aesthetically pleasing appearance, and a consistent color.

[0006] Based on the above problems, the technical solution provided by this utility model is as follows:

[0007] The purpose of this utility model is to provide a stainless steel decorative panel for automobiles, including a stainless steel substrate layer. On one side of the stainless steel substrate layer in the thickness direction, a heat insulation layer, a black adhesive layer, a transparent PET layer, a color layer and a protective film layer are sequentially provided from the inside to the outside. The color layer is a paint layer.

[0008] Optionally, the stainless steel substrate layer is made of 3-series or 4-series stainless steel.

[0009] Optionally, the heat insulation layer is a heat insulation passivation layer.

[0010] Optionally, the black adhesive layer is epoxy resin black adhesive.

[0011] Optionally, the black adhesive layer is applied by coating or spraying onto the side of the heat insulation layer facing away from the stainless steel substrate layer.

[0012] Optionally, the transparent PET layer is bonded to the side of the black adhesive layer facing away from the heat insulation layer by lamination.

[0013] Optionally, the color layer is a water-based or oil-based paint layer.

[0014] Optionally, the color layer is applied by coating or spraying onto the side of the transparent PET layer that faces away from the black adhesive layer.

[0015] Optionally, the protective film layer is a PE film.

[0016] Optionally, the protective film layer is bonded to the side of the color layer facing away from the transparent PET layer by means of lamination or adhesive.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] This utility model discloses a stainless steel decorative panel for automobiles. The transparent PET layer prevents the bending angle from turning white during bending. The color layer allows for the selection of different paint colors to suit various needs, enhancing the panel's color vibrancy. Furthermore, the use of black adhesive ensures color consistency, further improving the panel's aesthetics. A protective film layer provides enhanced protection for the outer layer of the panel and can be removed before use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional structural diagram of the stainless steel decorative panel for automobiles according to this utility model.

[0021] in:

[0022] 10. Stainless steel substrate layer; 20. Heat insulation layer; 30. Black adhesive layer; 40. Transparent PET layer; 50. Color layer; 60. Protective film layer. Detailed Implementation

[0023] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0024] For the automotive stainless steel decorative panel of this utility model embodiment, see [link / reference]. Figure 1 It includes a stainless steel substrate layer 10, a heat insulation layer 20, a black adhesive layer 30, a transparent PET layer 40, a color layer 50, and a protective film layer 60, where the color layer 50 is a paint layer. The stainless steel substrate layer 10 undergoes a degreasing treatment on one side, i.e., ... Figure 1 The upper surface shown is passivated to form a heat-insulating passivation layer. Then, a layer of black adhesive 30 is applied or sprayed onto the outer surface of the heat-insulating passivation layer. This not only facilitates the subsequent bonding and fixing of the transparent PET layer 40, but also ensures color consistency of the decorative panel, improves its aesthetics, and further enhances its protective function. Next, a transparent PET layer 40 is adhered to the outer surface of the black adhesive layer 30, i.e., the side facing away from the heat-insulating layer 20. This transparent PET layer 40 protects the stainless steel substrate layer 10 during bending, preventing the bending angle from turning white and causing defects that would affect the aesthetics of the decorative panel. Finally, a color layer 50 is applied to the outer surface of the transparent PET layer 40, i.e., the side facing away from the black adhesive. The color layer 50 enhances the aesthetics of the decorative panel. It should be noted that the color layer 50 can be sprayed or coated with various colors of paint according to actual usage requirements. Finally, a protective film 60 is applied to the outer surface of the color layer 50, i.e., the side facing away from the transparent PET layer 40, to form a protective film layer 60 on the outer surface of the stainless steel decorative panel. This film layer 60 serves to protect the color layer 50 and the stainless steel substrate layer. In actual use, the protective film layer 60 can be removed to improve the color saturation and smoothness of the decorative panel. The automotive stainless steel decorative panel of this embodiment uses stainless steel as the substrate. After passivation treatment to form a heat-insulating passivation layer, a black adhesive layer 30, a transparent PET layer 40, and a color layer 50 are sequentially applied. Finally, a film is applied to form a stainless steel decorative panel for automotive decoration. The structure is simple. While meeting the requirements for lightweighting, the stainless steel substrate layer 10 is extensible and will turn white when bent. The transparent PET layer 40 in this invention prevents the bending angle from turning white when the decorative panel is bent, improving its aesthetics. Furthermore, because the transparent PET layer 40 is translucent, the black adhesive layer 30 ensures color consistency and enhances the adhesion of the transparent PET layer 40, thereby improving the structural strength of the decorative panel.

[0025] In this embodiment, the stainless steel substrate layer 10 can be selected from 3-series stainless steel, such as the commonly available 304, or 4-series stainless steel, such as the commonly available 436 or 442. Those skilled in the art can choose according to the intended use of the final product. The thickness is also not particularly limited and can be selected from 0.2 to 1.0 mm.

[0026] In this embodiment, the heat insulation layer 20 is formed by applying a heat insulation coating, which is a mixture of conventional stainless steel passivation liquid and heat insulation material, onto the upper surface of the stainless steel substrate layer 10. The specific formulations of the passivation liquid, heat insulation material, and heat insulation coating are not described or limited, as they are readily known and implemented by those skilled in the art and are not the innovation of this invention. The thickness of the heat insulation layer 20 is also not described or limited in detail; those skilled in the art can make selections based on actual needs. The formation of the heat insulation layer 20 enables the decorative panel to have heat insulation functionality, making it suitable for automotive decoration, especially for interior panels. In this embodiment, the heat insulation layer 20 preferably adopts a heat insulation passivation layer, which improves the heat insulation functionality of the decorative panel and also allows the subsequent black adhesive layer 30 to better bond with the stainless steel substrate layer 10.

[0027] In this embodiment, the black adhesive is preferably a commercially available epoxy resin black adhesive. The thickness is not described or limited and can be selected and designed according to actual needs. The black adhesive can be bonded to the outer surface of the heat insulation layer 20 using conventional coating or spraying methods.

[0028] The thickness of the transparent PET layer 40 in this embodiment is not specifically described or limited, and can be selected according to actual needs. The PET layer has high hardness and chemical resistance, which not only improves the protection of the decorative panel, but more importantly, ensures that the bending angle of the decorative panel will not turn white when bent, thus affecting its aesthetics. In this embodiment, the transparent PET layer 40 is bonded to the outer surface of the black adhesive using a conventional lamination method. The operation is simple.

[0029] In this embodiment, the color layer 50 is a paint layer of various colors selected according to actual needs, which can be bonded to the outer surface of the transparent PET layer 40 by conventional coating or spraying methods. For example, the color layer 50 can use commercially available water-based or oil-based paints; specific details are not described or limited. The purpose is twofold: firstly, to improve the protection of the stainless steel substrate layer 10; and secondly, to increase the color vibrancy of the decorative panel, enhance its aesthetics, and thus improve the product's market competitiveness. The thickness of the color layer 50 is not specifically described or limited and can be selected and designed according to actual needs.

[0030] In this embodiment, the protective film layer 60 is a conventional PE protective film available on the market. It can be bonded to the outer surface of the color layer 50 by conventional lamination methods or by adhesive bonding. In actual use, the protective film layer 60 can be peeled off, which can improve the color gloss and the smoothness of the feel.

[0031] Additionally, it should be noted that, Figure 1 The thickness of each structural layer shown does not represent its actual thickness.

[0032] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stainless steel decorative sheet for an automobile, comprising a stainless steel base material layer, characterized by, A heat insulation layer, a black glue layer, a transparent PET layer, a color layer and a protective film layer are sequentially arranged from inside to outside on one surface of the stainless steel substrate layer in the thickness direction, and the color layer is a paint layer.

2. The stainless steel trim plate for an automobile according to claim 1, characterized by The stainless steel substrate layer is made of 3-series stainless steel or 4-series stainless steel.

3. The stainless steel trim plate for an automobile according to claim 1, characterized by The heat insulation layer is a heat insulation passivation layer.

4. The stainless steel trim plate for an automobile according to claim 1, characterized by The black glue layer is an epoxy resin black glue.

5. The stainless steel trim plate for an automobile according to claim 4, characterized by The black glue layer is combined on one surface of the heat insulation layer away from the stainless steel substrate layer by coating or spraying.

6. The stainless steel trim plate for an automobile according to claim 1, characterized by The transparent PET layer is combined on one surface of the black glue layer away from the heat insulation layer by pressing.

7. The stainless steel trim plate for an automobile according to claim 1, characterized by The color layer is a water-based or oil-based paint layer.

8. The stainless steel trim plate for an automobile according to claim 1 or 7, characterized by The color layer is combined on one surface of the transparent PET layer away from the black glue layer by coating or spraying.

9. The stainless steel trim plate for an automobile according to claim 1, wherein The protective film layer is a PE film.

10. The stainless steel trim plate for an automobile according to claim 1 or 9, characterized by The protective film layer is attached on one surface of the color layer away from the transparent PET layer by pressing or sticking.

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