Shell, manufacturing method thereof and electronic equipment

Abstract

The invention provides a shell and a manufacturing method thereof and electronic equipment, the shell comprises a base material layer, a texture layer and a protection layer which are arranged in a stacked mode, the texture layer is arranged on the surface of the base material layer, the surface, away from the base material layer, of the texture layer is provided with preset textures, and forming materials of the texture layer comprise coating; the coating comprises at least two solvents with different relative volatilization rates. The protective layer is arranged on the surface of the texture layer and has light transmission. In the forming process of the texture layer, due to different volatilization speeds of the solvent, the uniform wrinkles are formed on the surface of the coating under the action of surface tension, after the coating is cured, the uniform wrinkles are the preset textures on the surface of the texture layer, and the preset textures can present an ice flower-shaped effect; the texture layer with the ice flower texture enables the shell to have an ice flower appearance effect. According to the shell provided by the invention, the ice flower texture appearance can be realized without adopting specific ice flower paint, and the shell can be suitable for base material layers formed by various materials.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic devices, and in particular, to a shell and a manufacturing method thereof, and an electronic device. BACKGROUND

[0002] With the improvement of living standards and technological level, users' requirements for the appearance effect of devices such as mobile phones, computers and cars are also increasing. The shells of these devices are usually designed in structure and appearance coating to make the devices have good visual appearance effect.

[0003] The ice flower texture effect is similar to the ice flowers condensed on the winter glass window. It is favored by users due to its special texture, and the effects of strange color and strong three-dimensional sense. At present, the ice flower texture effect needs to be formed by purchasing ice flower paint for spraying and curing, and some ice flower paints have strict restrictions on the substrate. The manufacturers have certain restrictions when implementing the ice flower texture effect on the shell. SUMMARY

[0004] To overcome the problems in the related art, the present disclosure provides a shell and a manufacturing method thereof, and an electronic device.

[0005] According to a first aspect of the present disclosure, a shell is provided, which comprises:

[0006] a substrate layer;

[0007] a texture layer, the texture layer being arranged on a surface of the substrate layer, a surface of the texture layer away from the substrate layer being provided with a preset texture;

[0008] a protective layer, the protective layer being arranged on a surface of the texture layer, the protective layer having light transmittance;

[0009] wherein the forming material of the texture layer comprises a coating, and the coating comprises at least two solvents with different relative volatilization rates.

[0010] In some embodiments of the present disclosure, the coating comprises an ultraviolet light curing coating.

[0011] In some embodiments of the present disclosure, the surface roughness of the substrate layer is 0.40 μm-2.24 μm.

[0012] In some embodiments of the present disclosure, the thickness of the texture layer is 6 μm-50 μm.

[0013] In some embodiments of the present disclosure, the protective layer comprises an intermediate layer and a surface layer arranged in layers, the intermediate layer covering the texture layer, and the hardness of the surface layer is greater than that of the intermediate layer.

[0014] In some embodiments of the present disclosure, the thickness of the intermediate layer is 3 μm-12 μm; and / or,

[0015] The thickness of the surface layer is 5 μm-20 μm.

[0016] In some embodiments of the present disclosure, the material of the intermediate layer and the surface layer comprises a coating, and the coating comprises an ultraviolet light curing coating.

[0017] In some embodiments of the present disclosure, the shell further comprises a metal layer, and the metal layer covers the surface of the texture layer.

[0018] In some embodiments of the present disclosure, the material of the metal layer comprises at least one of zinc, nickel, silver, copper, chromium, cadmium, gold, tin, and rhodium.

[0019] In some embodiments of the present disclosure, the thickness of the metal layer is 0.01 μm-0.50 μm.

[0020] According to a second aspect of the present disclosure, a manufacturing method of a shell is provided, and the manufacturing method of the shell comprises:

[0021] A coating is arranged on the surface of a substrate layer, and the coating is cured to form a texture layer, and a preset texture is formed on the surface of the texture layer away from the substrate layer; wherein the coating comprises at least two solvents with different relative evaporation rates;

[0022] A protective layer is formed on the surface of the texture layer, and the protective layer has light transmittance.

[0023] In some embodiments of the present disclosure, the coating comprises an ultraviolet light curing coating;

[0024] The curing condition of the ultraviolet light curing coating comprises: the ultraviolet light intensity is 300 mJ / cm 2 -1500 mJ / cm 2 , the curing temperature is 30℃-70℃, and the curing time is 1 min-8 min.

[0025] In some embodiments of the present disclosure, the ultraviolet light curing coating is arranged on the surface of the substrate layer by using a spraying process, and the spraying pressure of the spraying process is 2 kPa-9 kPa.

[0026] In some embodiments of the present disclosure, the protective layer formed on the surface of the texture layer comprises:

[0027] A first coating is arranged on the surface of the texture layer, and the first coating forms an intermediate layer under a first preset condition;

[0028] A second coating is arranged on the surface of the intermediate layer, and the second coating forms a surface layer under a second preset condition;

[0029] The hardness of the surface layer is greater than the hardness of the intermediate layer.

[0030] In some embodiments of the present disclosure, the first coating and the second coating are both ultraviolet curing coatings.

[0031] The first preset condition includes: the intensity of ultraviolet light is 100 mJ / cm 2 -500 mJ / cm 2 , the curing temperature is 45-75℃, and the curing time is 1-8 min; and / or,

[0032] The second preset condition includes: the intensity of ultraviolet light is 300 mJ / cm 2 -1000 mJ / cm 2 , the curing temperature is 30-70℃, and the curing time is 1-8 min.

[0033] In some embodiments of the present disclosure, before forming the texture layer, the method for manufacturing the shell further comprises:

[0034] Performing surface treatment on the substrate layer.

[0035] In some embodiments of the present disclosure, before forming the protective layer, the method for manufacturing the shell further comprises:

[0036] Forming a metal layer covering the surface of the texture layer.

[0037] According to a third aspect of the present disclosure, an electronic device is provided, which comprises the shell provided by the first aspect of the present disclosure.

[0038] The technical solution provided by the embodiments of the present disclosure can have the following beneficial effects: because the coating used to form the texture layer comprises at least two solvents with different relative evaporation rates, the evaporation rates of the solvents are different during the formation of the texture layer, and the surface of the coating forms uniform and irregular wrinkles due to the surface tension, and after the coating is cured, the uniform and irregular wrinkles are the preset texture on the surface of the texture layer, the preset texture can present an ice flower effect, and under the protection of the protective layer with light transmission, the texture layer makes the shell have an ice flower appearance effect. The shell provided by the present disclosure can realize the ice flower texture appearance without using a specific ice flower paint, and can be applied to substrate layers formed by various materials.

[0039] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments that conform to the present application and, together with the description, serve to explain the principles of the present application.

[0041] Figure 1 is a cross-sectional view of a housing according to an exemplary embodiment.

[0042] Figure 2 is a cross-sectional view of a housing according to another exemplary embodiment.

[0043] Figure 3 is a cross-sectional view of a housing according to another exemplary embodiment.

[0044] Figure 4 is a perspective view of a housing according to an exemplary embodiment.

[0045] Figure 5 is a flowchart of a method of manufacturing a housing according to an exemplary embodiment. DETAILED DESCRIPTION

[0046] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail because they would obscure the application in unnecessary detail. The following description, given with reference to the Figures, is of the best modes presently contemplated for carrying out the application. What is described in this detailed description is not intended to be exhaustive or to be unduly restrictive. The description is aimed at providing what is believed to be the most useful embodiment of the present application, giving examples to illustrate the application's principles and its practical application. The best mode is presented in sufficient detail to enable others skilled in the art to practice the application. The application can be practiced in a variety of ways.

[0047] With the improvement of living standards and technological level, users' requirements for the appearance effect of mobile phones, computers, cars and other equipment are also increasing. The shells of these devices are usually structurally designed and appearance-coated to have a good visual appearance effect.

[0048] The ice flower texture effect is similar to the ice flowers condensed on the winter glass window. It is favored by users due to its special texture, and the effects of strange color and strong three-dimensional sense. At present, ice flower texture effect needs to be formed by purchasing ice flower paint for spraying and curing, and some ice flower paints have strict restrictions on the substrate. The manufacturers have certain restrictions when implementing the ice flower texture effect on the shell.

[0049] In view of this, the present disclosure provides a shell, which comprises a substrate layer, a texture layer and a protective layer arranged in a stack, the texture layer is arranged on a surface of the substrate layer, a preset texture is arranged on a surface of the texture layer away from the substrate layer, the forming material of the texture layer comprises a coating, and the coating comprises at least two solvents with different relative evaporation rates. The protective layer is arranged on a surface of the texture layer, and the protective layer has light transmittance. In the forming process of the texture layer of the present disclosure, due to the different evaporation rates of the solvents, the surface of the coating forms uniform wrinkles due to the effect of surface tension, and after the coating is solidified, the uniform wrinkles are the preset texture on the surface of the texture layer. The preset texture can present an ice flower effect, and under the protection of the protective layer with light transmittance, the texture layer with the preset texture makes the shell have an ice flower appearance effect. The shell provided by the present disclosure can realize the ice flower texture appearance without using special ice flower paint, and can be applied to substrate layers formed by various materials.

[0050] An example embodiment of the present disclosure provides a shell, referring to Figure 1 Figure 1 is a cross-sectional view of a shell according to an example embodiment. The shell 100 comprises a substrate layer 10, a texture layer 20 and a protective layer 30 arranged in a stack. The shell 100 can be used as a housing of any device with appearance decoration requirements, which can include a car, a terminal device such as a mobile phone, a tablet computer, a computer, etc., and a wearable device such as a watch, a headset, a bracelet, etc., but is not limited thereto. The shell 100 can be wrapped around or entirely wrapped around the main part of the device with appearance decoration requirements to protect and decorate the main part of the device.

[0051] The substrate layer 10 is the main structure of the shell 100, which is formed by a material with certain mechanical strength, for example, can include metal, alloy, engineering plastic, ceramic, glass, fiber reinforced composite material, etc. The shape of the substrate layer 10 can be designed based on the outer shape structure of the part to be wrapped by the shell 100, for example, when the device to be wrapped by the shell 100 is a mobile phone, the shell 100 can be used as the back cover or the middle frame of the mobile phone, and the shape of the substrate layer 10 can be designed as the shape required by the middle frame skeleton, or the 2D shape, 2.5D shape or 3D shape required by the back cover.

[0052] ​Texture layer 20 is disposed on the surface of substrate layer 10, and texture layer 20 is used to provide an ice flower texture effect. The forming material of texture layer 20 includes coatings, which are a general term for liquid or solid materials that can form a solid film with protective, decorative, or other functions when applied to the surface of an object. In this embodiment, the coating includes at least two solvents with different relative evaporation rates; therefore, the coating used to form texture layer 20 in this embodiment is a liquid coating. The coating may include film-forming substances, pigments (including coloring pigments and / or fillers), solvents, and additives. Based on the curing method of the coating, the coating may include thermosetting coatings, infrared curing coatings, ultraviolet curing coatings, room temperature curing coatings, etc. In this embodiment, the curing type of the coating forming texture layer 20 is not limited; it can be any one of thermosetting coatings, infrared curing coatings, ultraviolet curing coatings, and room temperature curing coatings. The coating can be applied to the surface of substrate layer 10 by spraying, brushing, rolling, etc., and forms texture layer 20 after curing.

[0053] Since the texture layer 20 is bridged with the substrate layer 10, the film-forming substance in the coating that forms the texture layer 20 can be a resin material with a large number of polar groups in its molecular structure, such as epoxy acrylic resin, modified epoxy acrylic resin, polyester acrylic resin, amino acrylic resin, polyurethane acrylic resin, etc. These resins can generate strong adsorption forces with adjacent interfaces and can adhere well to materials such as metals, steel, fiberglass, wood, and plastics.

[0054] The coating used to form the texture layer 20 may include at least two solvents with different relative evaporation rates. Since the evaporation rate of a solvent is affected by four factors—temperature, vapor pressure, surface area, and the velocity of airflow over the surface—the relative evaporation rate of the solvent is measured using the evaporation rate of n-butyl acetate as a baseline to reflect the volatility of the solvent. In some examples, the solvent in the coating used to form the texture layer 20 may include n-propylbenzene and ethanol. In other examples, the solvent in the coating used to form the texture layer 20 may include ethyl acetate and butyl acetate. In other examples, the solvent in the coating used to form the texture layer 20 may include butanone and n-butanol. In other examples, the solvent in the coating used to form the texture layer 20 may include butyl acetate and n-butanol. In other examples, the solvent in the coating used to form the texture layer 20 may include ethyl acetate, butyl acetate, and n-butanol. Of course, the solvent in the coating used to form the texture layer 20 may also include other combinations of solvents with different relative evaporation rates.

[0055] During the curing process of the coating used to form the texture layer 20, at least two solvents in the coating evaporate under the same conditions. Due to the different relative evaporation rates of the different solvents, the surface of the coating forms uniform and irregular wrinkles due to the surface tension during the curing process. After the coating cures to form the texture layer 20, these uniform and irregular wrinkles are the preset texture 21 on the surface of the texture layer 20.

[0056] The preset texture 21 can be a continuous and irregular mesh or silk-like vein pattern. In the thickness direction of the outer shell 100, the preset texture 21 is a three-dimensional texture with varying density, giving the texture layer 20 an uneven surface. When a user views the surface of the texture layer 20 from a top-down angle, the preset texture 21 on the surface of the texture layer 20 can reflect and scatter some of the incident light, allowing the preset texture 21 to present an ice flower texture effect similar to the ice flowers that condense on a windowpane in winter.

[0057] In this embodiment, by setting the solvent in the coating that forms the texture layer 20, the texture layer 20 can present an ice flower texture effect. There is no need to use ice flower paint that has specific requirements for the material of the substrate layer 10. The shell 100 formed by various materials as the substrate layer 10 can achieve an appearance with an ice flower effect.

[0058] In some examples, the surface roughness (Ra value) of the substrate layer 10 can be set between 0.40 μm and 2.24 μm to improve the adhesion between the coating forming the texture layer 20 and the substrate layer 10, thereby improving the reliability of the housing 100. In some examples, the surface roughness (Ra value) of the substrate layer 10 can be set between 0.8 μm and 2.0 μm. It is understood that the surface roughness of the substrate layer 10 can be within the above-mentioned range by performing a surface treatment process on the substrate layer 10. The specific surface treatment process selected can be determined based on the material of the substrate layer 10. For example, when the material of the substrate layer 10 includes metals, alloys, ceramics, glass, etc., the surface treatment process can include etching, sandblasting, etc. As another example, when the material of the substrate layer 10 includes engineering plastics, the surface treatment process can include etching, oxidation, etc.

[0059] In some examples, since the substrate layer 10 is usually in close contact with the device body to be covered by the housing 100, the texture layer 20 can be disposed on one side surface of the substrate layer 10, that is, the texture layer 20 is disposed on the outer surface of the substrate layer 10, so that the stacked structure of the housing 100 is only disposed on one side surface of the substrate layer 10, thereby reducing the thickness of the housing 100.

[0060] In some examples, the coating forming the texture layer 20 may include a UV-curable coating. This UV-curable coating may include components such as a resin matrix, additives, solvents, and fillers. The additives may include photoinitiators. That is, the UV-curable coating can be cured by UV light irradiation, allowing the texture layer 20 to adhere to the surface of the substrate layer 10. Compared to thermosetting coatings, UV-curable coatings require only lower temperatures during the curing process to rapidly solidify the liquid coating into a film. This reduces the impact of the texture layer 20 curing process on the strength and material properties of the substrate layer 10, preventing changes in the properties of the substrate layer 10 from affecting the formation of the preset texture 21 during the coating's curing process. This results in a well-uniform distribution of the formed preset texture 21. Compared to room-temperature curing coatings, UV-curable coatings cure faster, resulting in a more uniform distribution of the formed preset texture 21. The texture layer 20 formed by the UV-curable coating gives the outer shell 100 a good ice-flower texture appearance and ensures the overall reliability of the outer shell 100.

[0061] In some examples, the thickness of the texture layer 20 can be set between 6μm and 50μm. In other examples, the thickness of the texture layer 20 can be set between 10μm and 40μm. If the thickness of the texture layer 20 is too small, it will not be able to bridge the substrate layer 10 and the protective layer 30 well, and it will be difficult to form a three-dimensional preset texture 21 on the surface of the texture layer 20. Since the coating film formed by the paint forming the texture layer 20 itself has low strength, if the thickness of the texture layer 20 is too large, it will easily affect the overall strength of the shell 100, and the paint with excessive thickness is prone to shrinkage stress during the curing process, affecting the adhesion between the texture layer 20 and the substrate layer 10.

[0062] A protective layer 30 is disposed on the surface of the texture layer 20 to protect the texture layer 20 and prevent the preset texture 21 on the surface of the texture layer 20 from being worn and affecting the appearance of the ice flower pattern. It is understood that, since the protective layer 30 is the surface of the outer casing 100 that comes into contact with the user, the protective layer 30 can be formed of a material with high hardness and mechanical strength to ensure that the outer casing 100 has good hardness and scratch resistance, thus ensuring good reliability.

[0063] The protective layer 30 is translucent, allowing the ice flower effect provided by the preset texture 21 on the surface of the texture layer 20 to be well presented. It is understood that the protective layer 30 can be formed of a colorless, transparent material, so that the preset texture 21 presented by the texture layer 20 is the same as the ice flower effect presented by the outer shell 100. Alternatively, the protective layer 30 can be formed of a colored, transparent material, so that the preset texture 21 presented by the texture layer 20 and the color carried by the protective layer 30 work together, making the color of the preset texture 21 presented by the outer shell 100 more vibrant and the decorative effect more ideal.

[0064] In some examples, the material forming the protective layer 30 may include transparent resin coatings, such as epoxy resin, phenolic resin, polyurethane resin, etc., which can be formed on the surface of the textured layer 20 by brushing, spraying, roller coating, or other methods. The material of the protective layer 30 may also include transparent hard film materials with high hardness, wear resistance, and corrosion resistance, such as silicon dioxide, aluminum oxide, zinc oxide, titanium nitride, zirconium nitride, and silicon nitride, which can be formed on the surface of the textured layer 20 by chemical vapor deposition, evaporation, or other methods.

[0065] It is understandable that the surface of the protective layer 30 can have fine textures, which may be formed under the influence of the preset texture 21 on the surface of the texture layer 20, so that the shell 100 can provide the user with a certain textured tactile feel. In other examples, the surface of the protective layer 30 can be a flat surface without any three-dimensional texture, so that the protective layer 30 can provide the user with a smooth and flat feel, while reducing the light refraction and light reflection of the protective layer 30, so that the appearance of the preset texture 21 presented by the texture layer 20 can be well displayed. The shell 100 provided by this disclosure can achieve the appearance of ice flower texture without the use of ice flower paint, so that shells formed by various materials as the base layer 10 can have a good appearance effect.

[0066] In some possible implementations, refer to Figure 2 As shown, the outer casing 100 includes a substrate layer 10, a texture layer 20, and a protective layer 30 stacked together. The protective layer 30 is mainly used to protect the texture layer 20. The protective layer 30 may include an intermediate layer 31 and a surface layer 32 stacked together to further enhance its protective function. The intermediate layer 31 is disposed between the texture layer 20 and the surface layer 32. The surface layer 32 is configured to have a higher hardness than the intermediate layer 31, so that the surface layer 32 serves as the surface of the outer casing 100 that comes into contact with the user, ensuring that the outer casing 100 has good hardness and scratch resistance.

[0067] Since the surface of the textured layer 20 has a preset texture 21, and the hardness of the intermediate layer 31 is less than that of the surface layer 32, the intermediate layer 31, located between the textured layer 20 and the surface layer 32, can adhere the textured layer 20 and the surface layer 32, preventing the protective layer 30 from peeling off. Furthermore, the intermediate layer 31 can also act as a barrier, increasing the difficulty for corrosive media such as water vapor, oxygen, and chemical corrosive substances to reach the textured layer 20. The intermediate layer 31 can also fill in the preset texture 21, resulting in a smooth surface for the surface layer 32.

[0068] In some examples, the materials for the intermediate layer 31 and the surface layer 32 can be coatings. Coatings may include film-forming substances, pigments (including coloring pigments and / or fillers), solvents, and additives. Based on the curing method, coatings may include thermosetting coatings, infrared curing coatings, ultraviolet curing coatings, room temperature curing coatings, etc. The coatings forming the intermediate layer 31 and the surface layer 32 can be any one of thermosetting coatings, infrared curing coatings, ultraviolet curing coatings, or room temperature curing coatings; they may be the same or different types. It is understood that, since the surface layer 32 has a higher hardness than the intermediate layer 31, the hardness properties of the film-forming substance in the coating used to form the surface layer 32 should be greater than the hardness properties of the film-forming substance in the coating used to form the intermediate layer 31.

[0069] In some examples, the coatings forming the intermediate layer 31 and the surface layer 32 may include UV-curable coatings. Since the intermediate layer 31 is in contact with the textured layer 20, the composition of the UV-curable coating forming the intermediate layer 31 may be similar to that of the UV-curable coating forming the textured layer 20. The film-forming material of the UV-curable coating forming the intermediate layer 31 may be a material including polar groups, so that the intermediate layer 31 can effectively bridge the textured layer 20 and the surface layer 32.

[0070] Since the intermediate layer 31 formed by the coating is not completely sealed, a large number of tiny pores can be seen on the coating surface after magnification. The surface layer 32, formed by a UV-curable coating containing a film-forming substance with high hardness, is placed on the intermediate layer 31, which can further isolate the textured layer 20 from the corrosive medium. At the same time, since the surface layer 32 is the surface layer of the outer shell 100, the UV-curable coating forming the surface layer 32 can have good hardness, impact resistance, wear resistance, acid and alkali resistance, etc., so that the ice flower appearance effect of the outer shell 100 can have a long service life and ensure that the outer shell 100 has good structural reliability.

[0071] It is understandable that the coatings forming the intermediate layer 31 and the surface layer 32 are UV-curable coatings. Since this type of coating only requires a low temperature during the curing process to cure the liquid coating into a film, the curing process of the intermediate layer 31 and the surface layer 32 reduces the changes in the strength and material properties of the substrate layer 10 caused by the curing process, thus ensuring the structural reliability of the shell 100.

[0072] In some examples, the thickness of the intermediate layer 31 can be set between 3μm and 12μm. In other examples, the thickness of the intermediate layer 31 can be set between 4μm and 10μm. If the thickness of the intermediate layer 31 is too small, it cannot effectively bridge the texture layer 20 and the surface layer 32, nor can it effectively fill the preset texture 21 on the surface of the texture layer 20. If the thickness of the intermediate layer 31 is too large, it can easily cause shrinkage stress, affecting the adhesion between the intermediate layer 31 and the texture layer 20.

[0073] In some examples, the thickness of the surface layer 32 can be set between 5μm and 20μm. In other examples, the thickness of the surface layer 32 can be set between 7μm and 18μm. If the thickness of the surface layer 32 is too small, it cannot provide good protection properties such as hardness and impact resistance for the surface of the housing 100. If the thickness of the surface layer 32 is too large, the light transmittance of the surface layer 32 will decrease, which may affect the presentation of the ice flower texture effect of the housing 100.

[0074] In some examples, reference Figure 3 As shown, in addition to the substrate layer 10, texture layer 20, and protective layer 30, the outer shell 100 also includes a metal layer 40, which covers the surface of the texture layer 20. That is, the metal layer 40 is disposed between the texture layer 20 and the protective layer 30, and the metal layer 40 is attached to the surface of the preset texture 21 on the surface of the texture layer 20. The metal layer 40 does not fill in the preset texture 21, but rather provides a metallic luster to the preset texture 21. The preset texture 21 with a metallic luster can present a good three-dimensional effect and a bright color ice flower appearance effect.

[0075] The metal layer 40 can be formed using a metallic material with a good metallic luster, such as at least one of zinc, nickel, silver, copper, chromium, cadmium, gold, tin, and rhodium. Specifically, the metal layer 40 formed of zinc has a bluish-white metallic luster; the metal layer 40 formed of silver, cadmium, tin, or rhodium has a silvery-white metallic luster; the metal layer 40 formed of copper has a purplish-red metallic luster; the metal layer 40 formed of chromium has a steel-gray metallic luster; and the metal layer 40 formed of gold has a golden-yellow metallic luster.

[0076] In some examples, the thickness of the metal layer 40 can be set between 0.01 μm and 0.50 μm. In other examples, the thickness of the metal layer 40 can be set between 0.02 μm and 0.10 μm. If the thickness of the metal layer 40 is too small, it cannot adequately cover the surface of the texture layer 20, resulting in poor metallic luster. If the thickness of the metal layer 40 is too large, it may significantly obscure the shape of the preset texture 21 on the surface of the texture layer 20, leading to a poor final ice flower appearance of the casing 100 and potentially increasing the weight of the casing 100.

[0077] refer to Figure 4 As shown, Figure 4 This is an exemplary embodiment illustrating the actual effect of the casing, combined with... Figure 3 and Figure 4 Because a metal layer 40 is disposed between the textured layer 20 and the protective layer 30 in the outer shell, the entire outer shell can actually present a bright, iridescent ice flower texture appearance. To make the ice flower texture effect more pronounced... Figure 4 In the image, the white, shiny area represents the ice-flower texture appearance where the casing is illuminated. As the position of the light source changes, or as the angle of the casing changes, the position where the light is reflected also changes, allowing the user to visually perceive different forms of the brightly colored ice-flower texture from different locations on the casing.

[0078] In one exemplary embodiment, this disclosure provides a method for manufacturing a housing, referring to... Figure 5 As shown, Figure 5 This is a flowchart illustrating a method for manufacturing a housing, as shown in an exemplary embodiment. The method for manufacturing a housing may include the following steps:

[0079] Step S100: Apply a coating to the surface of the substrate layer, and cure the coating to form a textured layer. The textured layer has a preset texture on the surface away from the substrate layer. The coating includes at least two solvents with different relative evaporation rates.

[0080] Step S200: A protective layer is formed on the surface of the texture layer, and the protective layer is transparent.

[0081] In step S100, refer to Figure 1 As shown, the substrate layer 10 serves as the main structure of the outer shell 100 and is formed of a material with a certain mechanical strength, such as metal, alloy, engineering plastic, ceramic, glass, fiber-reinforced composite material, etc.

[0082] The coating used to form the texture layer 20 is applied to the surface of the substrate layer 10 by spraying, brushing, or rolling, and then cured to form the texture layer 20. Since the coating forming the texture layer 20 includes at least two solvents with different relative evaporation rates, the coating used to form the texture layer 20 is a liquid coating. The coating may include film-forming substances, pigments (including coloring pigments and / or fillers), solvents, and additives. The coating used to form the texture layer 20 can be any one of thermosetting coatings, infrared curing coatings, ultraviolet curing coatings, or room temperature curing coatings. When curing the coating, the curing method can be determined based on the curing type of the selected coating used to form the texture layer 20.

[0083] Since the texture layer 20 is bridged with the substrate layer 10, the film-forming substance in the coating that forms the texture layer 20 can be a resin material with a large number of polar groups in its molecular structure, such as epoxy acrylic resin, modified epoxy acrylic resin, polyester acrylic resin, amino acrylic resin, polyurethane acrylic resin, etc. These resins can generate strong adsorption forces with adjacent interfaces and can adhere well to materials such as metals, steel, fiberglass, wood, and plastics.

[0084] The coating used to form the texture layer 20 may include at least two solvents with different relative evaporation rates. Since the evaporation rate of a solvent is affected by four factors—temperature, vapor pressure, surface area, and the velocity of airflow over the surface—the relative evaporation rate of the solvent is measured using the evaporation rate of n-butyl acetate as a baseline to reflect the volatility of the solvent. In some examples, the solvent in the coating used to form the texture layer 20 may include n-propylbenzene and ethanol. In other examples, the solvent in the coating used to form the texture layer 20 may include ethyl acetate and butyl acetate. In other examples, the solvent in the coating used to form the texture layer 20 may include butanone and n-butanol. In other examples, the solvent in the coating used to form the texture layer 20 may include butyl acetate and n-butanol. In other examples, the solvent in the coating used to form the texture layer 20 may include ethyl acetate, butyl acetate, and n-butanol. Of course, the solvent in the coating used to form the texture layer 20 may also include other combinations of solvents with different relative evaporation rates.

[0085] During the curing process of the coating used to form the texture layer 20, at least two solvents in the coating evaporate under the same conditions. Due to the different relative evaporation rates of the different solvents, the surface of the coating forms uniform and irregular wrinkles due to the surface tension during the curing process. After the coating cures to form the texture layer 20, these uniform and irregular wrinkles are the preset texture 21 on the surface of the texture layer 20.

[0086] The preset texture 21 can be a continuous and irregular mesh or silk-like vein pattern. In the thickness direction of the outer shell 100, the preset texture 21 is a three-dimensional texture with varying density, giving the texture layer 20 an uneven surface. When a user views the surface of the texture layer 20 from a top-down angle, the preset texture 21 on the surface of the texture layer 20 can reflect and scatter some of the incident light, allowing the preset texture 21 to present an ice flower texture effect similar to the ice flowers that condense on a windowpane in winter.

[0087] In this embodiment, by setting the solvent in the coating used to form the texture layer 20, the texture layer 20 can present an ice flower texture effect. There is no need to use ice flower paint that has specific requirements for the material of the substrate layer 10. The shell 100 formed by various materials as the substrate layer 10 can achieve an appearance with an ice flower effect.

[0088] In some examples, the coating forming the texture layer 20 may include a UV-curable coating. This UV-curable coating may include components such as a resin matrix, additives, solvents, and fillers. The additives may include photoinitiators. That is, the UV-curable coating can be cured by UV light irradiation, allowing the texture layer 20 to adhere to the surface of the substrate layer 10. Compared to thermosetting coatings, UV-curable coatings require only lower temperatures during the curing process to rapidly solidify the liquid coating into a film. This reduces the impact of the texture layer 20 curing process on the strength and material properties of the substrate layer 10, preventing changes in the properties of the substrate layer 10 from affecting the formation of the preset texture 21 during the coating's curing process. This results in a well-uniform distribution of the formed preset texture 21. Compared to room-temperature curing coatings, UV-curable coatings cure faster, resulting in a more uniform distribution of the formed preset texture 21. The texture layer 20 formed by the UV-curable coating gives the outer shell 100 a good ice-flower texture appearance and ensures the overall reliability of the outer shell 100.

[0089] In some examples, the UV-curable coating used to form the texture layer 20 may include a UV-curable coating of model UV-01-01921C manufactured by Huaxing Paint Co., Ltd.

[0090] A UV-curable coating for forming the texture layer 20 is applied to one side of the substrate layer 10. By controlling the curing conditions of the UV-curable coating, it can be effectively cured to form the texture layer 20, and at least two solvents in the UV-curable coating can be effectively volatilized during the curing process. During curing, the surface of the UV-curable coating forms uniform and irregular wrinkles due to surface tension, resulting in a preset texture 21 with good three-dimensionality and ice flower texture. The curing conditions of the UV-curable coating may include curing temperature, curing time, and UV light intensity. In some examples, the curing conditions of the UV-curable coating may include a UV light intensity of 300 mJ / cm². 2 -1500mJ / cm 2 The curing temperature is 30℃-70℃, and the curing time is 1min-8min. In other examples, the curing conditions for UV-curable coatings may include: UV light intensity of 400mJ / cm². 2 -1400mJ / cm 2 The curing temperature is 40℃-57℃, and the curing time is 2min-6.5min.

[0091] In some examples, the UV-curable coating used to form the texture layer 20 can be applied to one side of the substrate layer 10 using a spraying process. Compared to other methods of applying UV-curable coatings, spraying offers advantages such as lower cost and higher film uniformity. Exemplarily, the spraying process can include pneumatic spraying, electro-spraying, ultrasonic spraying, cold spraying, etc. To ensure film uniformity, the spraying pressure can be controlled between 2 kPa and 9 kPa. In some examples, the spraying pressure can be controlled between 2 kPa and 6 kPa.

[0092] In some examples, the thickness of the texture layer 20 can be set between 6μm and 50μm. In other examples, the thickness of the texture layer 20 can be set between 10μm and 40μm. If the thickness of the texture layer 20 is too small, it will not be able to bridge the substrate layer 10 and the protective layer 30 well, and it will be difficult to form a three-dimensional preset texture 21 on the surface of the texture layer 20. Since the coating film formed by the paint forming the texture layer 20 itself has low strength, if the thickness of the texture layer 20 is too large, it will easily affect the overall strength of the shell 100, and the paint with excessive thickness is prone to shrinkage stress during the curing process, affecting the adhesion between the texture layer 20 and the substrate layer 10.

[0093] In some examples, before applying the texture layer 20 to the surface of the substrate layer 10, the substrate layer 10 may be surface-treated. This surface treatment aims to bring the surface roughness of the substrate layer 10 within a suitable range, ensuring good adhesion between the coating used to form the texture layer 20 and the substrate layer 10. When the material of the substrate layer 10 includes metals, alloys, ceramics, glass, etc., the surface treatment process may include etching, sandblasting, etc. For example, when the material of the substrate layer 10 includes engineering plastics, the surface treatment process may include etching, oxidation, etc. In some examples, the surface roughness (Ra value) of the surface-treated substrate layer 10 is between 0.40 μm and 2.24 μm. In other examples, the surface roughness (Ra value) of the surface-treated substrate layer 10 may be set between 0.8 μm and 2.0 μm.

[0094] In step S200, refer to Figure 1 As shown, a protective layer 30 is formed on the surface of the texture layer 20. The protective layer 30 is used to protect the texture layer 20 and prevent the preset texture 21 on the surface of the texture layer 20 from being worn and affecting the appearance of the ice flower pattern. It can be understood that since the protective layer 30 is the surface of the outer shell 100 that comes into contact with the user, the protective layer 30 can be formed of a material with good sealing properties, high hardness and mechanical strength, so that the outer shell 100 has good hardness and scratch resistance, and ensures that the outer shell 100 has good reliability.

[0095] The protective layer 30 is translucent, allowing the ice flower effect provided by the preset texture 21 on the surface of the texture layer 20 to be well presented. It is understood that the protective layer 30 can be formed of a colorless, transparent material, so that the preset texture 21 presented by the texture layer 20 is the same as the ice flower effect presented by the outer shell 100. Alternatively, the protective layer 30 can be formed of a colored, transparent material, so that the preset texture 21 presented by the texture layer 20 and the color carried by the protective layer 30 work together, making the color of the preset texture 21 presented by the outer shell 100 more vibrant and the decorative effect more ideal.

[0096] The protective layer 30 can be formed by materials such as transparent resin coatings, such as epoxy resin, phenolic resin, polyurethane resin, etc. These materials can be applied to the surface of the textured layer 20 by coating, spraying, or other methods, and then cured to form the protective layer 30. Alternatively, the protective layer 30 can be made of transparent hard film materials with high hardness, wear resistance, and corrosion resistance, such as silicon dioxide, aluminum oxide, zinc oxide, titanium nitride, zirconium nitride, and silicon nitride. These materials can be applied to the surface of the textured layer 20 by chemical vapor deposition, evaporation, or other methods. Once the material has been deposited to a certain thickness, the protective layer 30 is formed.

[0097] In some possible implementations, in step S200, a protective layer is formed on the surface of the texture layer, including:

[0098] Step S210: Apply a first coating to the surface of the texture layer, and under a first preset condition, the first coating forms an intermediate layer;

[0099] Step S220: Apply a second coating to the surface of the intermediate layer, and under a second preset condition, the second coating forms a surface layer.

[0100] In this embodiment, reference Figure 2 As shown, the intermediate layer 31 is disposed between the textured layer 20 and the surface layer 32. The intermediate layer 31 serves to adhere the textured layer 20 and the surface layer 32, preventing the protective layer 30 from peeling off. The intermediate layer 31 also acts as a barrier, increasing the difficulty for corrosive media such as moisture, oxygen, and chemical corrosive substances to reach the textured layer 20. In addition, the intermediate layer 31 can also fill in the pre-set texture 21, so that the surface layer 32 has a smooth surface. The hardness of the surface layer 32 is set to be greater than that of the intermediate layer 31, so that the surface layer 32, as the surface of the outer shell 100 that comes into contact with the user, ensures that the outer shell 100 has good hardness and scratch resistance.

[0101] Both the first coating forming the intermediate layer 31 and the second coating forming the surface layer 32 may include film-forming substances, pigments (including coloring pigments and / or fillers), solvents, and additives. Since the surface layer 21 needs to have a harder hardness than the intermediate layer 31, the hardness properties of the film-forming substances in the second coating should be greater than those of the film-forming substances in the first coating. The first or second coating can be any of the following: thermosetting coating, infrared curing coating, ultraviolet curing coating, or room temperature curing coating. The curing types of the first and second coatings can be the same or different.

[0102] Since the intermediate layer 31 is disposed between the texture layer 20 and the surface layer 32, the resin matrix of the first coating can be a resin including polar groups, such as epoxy acrylic resin, modified epoxy acrylic resin, polyester acrylic resin, amino acrylic resin, polyurethane acrylic resin, etc., so that the intermediate layer 31 can effectively bridge the texture layer 20 and the surface layer 32.

[0103] The first coating is brushed, rolled, or sprayed onto the surface of the textured layer 20. Under first preset conditions, the first coating gradually cures to form the intermediate layer 31. The first preset conditions can be conditions that allow the first coating to cure well. The first preset conditions for curing the first coating can be determined based on the type of the first coating, as long as the first coating can cure well. For example, when the first coating is a thermosetting coating, the first preset conditions include suitable thermosetting time and thermosetting temperature, etc. As another example, when the first coating is an infrared light-curing coating, the first preset conditions include suitable curing time, curing temperature, infrared light intensity, etc. As yet another example, when the first coating is an ultraviolet light-curing coating, the first preset conditions include suitable curing time, curing temperature, ultraviolet light intensity, etc.

[0104] Since the intermediate layer 31 formed by the first coating is not completely sealed, a large number of tiny pores may be present on the surface of the intermediate layer 31 after magnification. After the first coating forms the intermediate layer 31, the second coating is applied to the surface of the intermediate layer 31. Under a second preset condition, the second coating gradually cures to form a surface layer 32. The surface layer 32 formed by the second coating is placed on top of the intermediate layer 31, which can further isolate the textured layer 20 from external moisture and other substances. At the same time, since the film-forming substance in the second coating has a high hardness, the surface layer 32 formed by the second coating serves as the surface layer of the outer shell 100, giving the outer shell 100 good hardness, impact resistance, wear resistance, acid and alkali resistance, etc., thereby enabling the ice flower appearance effect of the outer shell 100 to have a long service life and ensuring that the outer shell 100 has good structural reliability.

[0105] It is understandable that the second preset conditions for curing the second coating can also be determined based on the type of the second coating, as long as the second coating can cure well. Since the hardness of the film-forming substance in the second coating should be greater than that of the film-forming substance in the first coating, and the composition and ratio of the first and second coatings may be different, the first and second preset conditions are not entirely the same.

[0106] In some examples, the first coating used to form the intermediate layer 31 and the second coating used to form the surface layer 32 are both UV-curable coatings. Since this type of coating only requires a low temperature to cure the liquid coating into a film during the curing process, it can reduce the changes in the strength and material properties of the substrate layer 10 during the formation of the intermediate layer 31 and the surface layer 32, and ensure the structural reliability of the shell 100.

[0107] Since the intermediate layer 31 serves to bridge the texture layer 20 and the surface layer 32, the composition of the first coating can be similar to that of the UV-curable coating forming the texture layer 20. In some examples, the first coating may include a UV-curable coating of model UV-02-0012C manufactured by Huaxing Paint Co., Ltd.

[0108] The first coating is brushed, rolled, or sprayed onto the surface of the texture layer 20. Under first preset conditions, the first coating gradually cures to form the intermediate layer 31. The first preset conditions can be conditions under which the first coating can cure well. When the first coating is a UV-curable coating, the first preset conditions may include curing temperature, curing time, UV light intensity, etc. In some examples, the first preset conditions may include: UV light intensity of 100 mJ / cm². 2 -500mJ / cm 2 The curing temperature is 45℃-75℃, and the curing time is 1min-8min. In other examples, the first preset condition may include: ultraviolet light intensity of 150mJ / cm². 2 -400mJ / cm 2 The curing temperature is 47℃-63℃, and the curing time is 2min-6.5min.

[0109] Since surface layer 32 serves as the outermost surface of housing 100, the film-forming material in the components of the second coating may include materials possessing hardness, impact resistance, and abrasion resistance. In some examples, the second coating may include a UV-curable coating, model UV-03-018C, manufactured by Huaxing Paint Co., Ltd.

[0110] The second coating is brushed, rolled, or sprayed onto the surface of the intermediate layer 31. Under second preset conditions, the second coating gradually cures to form the surface layer 32. The second preset conditions can be conditions under which the second coating can cure well. When the second coating is a UV-curable coating, the second preset conditions may include curing temperature, curing time, UV light intensity, etc. In some examples, the second preset conditions may include: UV light intensity of 300 mJ / cm². 2 -1000mJ / cm 2 The curing temperature is 30℃-70℃, and the curing time is 1min-8min. In other examples, the second preset condition may include: ultraviolet light intensity of 500mJ / cm². 2 -800mJ / cm 2 The curing temperature is 45℃-59℃, and the curing time is 2min-6.5min.

[0111] In some examples, a spraying process can be used to apply the first coating to the surface of the textured layer 20, and a spraying process can be used to apply the second coating to the surface of the intermediate layer 31. The spraying process can include pneumatic spraying, electro-spraying, ultrasonic spraying, cold spraying, etc. Compared to other coating application methods, the spraying process has advantages such as low cost, high film uniformity, and good adaptability to uneven surfaces. For example, to ensure the uniformity of the film distribution, the spraying pressure used in the spraying process can be controlled between 2 kPa and 9 kPa when applying the first and second coatings. In some examples, the spraying pressure can be controlled between 2 kPa and 6 kPa.

[0112] In some examples, the thickness of the intermediate layer 31 can be set between 3μm and 12μm. In other examples, the thickness of the intermediate layer 31 can be set between 4μm and 10μm. If the thickness of the intermediate layer 31 is too small, it cannot effectively bridge the texture layer 20 and the surface layer 32, nor can it effectively fill the preset texture 21 on the surface of the texture layer 20. If the thickness of the intermediate layer 31 is too large, it can easily cause shrinkage stress, affecting the adhesion between the intermediate layer 31 and the texture layer 20.

[0113] In some examples, the thickness of the surface layer 32 can be set between 5μm and 20μm. In other examples, the thickness of the surface layer 32 can be set between 7μm and 18μm. If the thickness of the surface layer 32 is too small, it cannot provide good protection properties such as hardness and impact resistance for the surface of the housing 100. If the thickness of the surface layer 32 is too large, the light transmittance of the surface layer 32 will decrease, which may affect the presentation of the ice flower texture effect of the housing 100.

[0114] In one exemplary embodiment, the method of manufacturing the outer shell may include the following steps:

[0115] Step S201: Apply a coating to the surface of the substrate layer, and cure the coating to form a textured layer. The textured layer has a preset texture on the surface away from the substrate layer. The coating includes at least two solvents with different relative evaporation rates.

[0116] Step S202: Form a metal layer that covers the surface of the texture layer;

[0117] Step S203: A protective layer is formed on the surface of the metal layer, and the protective layer is transparent.

[0118] The implementation methods of steps S201 and S203 are the same as or similar to those of steps S100 and S200 in the above embodiments, and will not be described in detail here.

[0119] In step S202, refer to Figure 3 As shown, a metal layer 40 is formed on the surface of the texture layer 20 away from the substrate layer 10. The metal layer 40 can be formed on the surface of the texture layer 20 by physical vapor deposition methods such as deposition, vacuum evaporation, sputtering, ion plating, etc., or by electroplating, hot-dip plating, etc. The metal layer 40 can be formed using a metallic material with good metallic luster, such as at least one of zinc, nickel, silver, copper, chromium, cadmium, gold, tin, and rhodium. Among them, the metal layer 40 formed by zinc has a bluish-white metallic luster, the metal layer 40 formed by silver, cadmium, tin, and rhodium has a silvery-white metallic luster, the metal layer 40 formed by copper has a purplish-red metallic luster, the metal layer 40 formed by chromium has a steel-gray metallic luster, and the metal layer 40 formed by gold has a golden-yellow metallic luster.

[0120] Due to the unique formation process of the metal layer 40, the metal is attached to the surface of the texture layer 20 in the form of atoms. Multiple metal atoms accumulate to form the metal layer 40. Therefore, the metal layer 40 is only attached to the surface of the preset texture 21 on the surface of the texture layer 20. It does not fill in the preset texture 21, but provides the preset texture 21 with a metallic luster, so that the preset texture 21 with a metallic luster can present a good three-dimensional effect and a bright color ice flower appearance effect.

[0121] In some examples, the thickness of the metal layer 40 can be set between 0.01 μm and 0.50 μm. In other examples, the thickness of the metal layer 40 can be set between 0.02 μm and 0.10 μm. If the thickness of the metal layer 40 is too small, it cannot adequately cover the surface of the texture layer 20, resulting in poor metallic luster. If the thickness of the metal layer 40 is too large, it can easily obscure the shape of the preset texture 21 on the surface of the texture layer 20, leading to a poor ice flower appearance effect of the final shell 100 and increasing the weight of the shell 100.

[0122] Understandably, when a metal layer 40 is formed in the outer shell 100, since the protective layer 30 covers the surface of the metal layer 40, to improve the adhesion between the protective layer 30 and the metal layer 40, the metal layer 40 can be further subjected to plasma treatment after its formation. During the plasma treatment process, plasma can be used to bombard the surface of the metal layer 40. When the plasma bombards the surface of the metal layer 40, it transfers its energy to the metal atoms on the surface of the metal layer 40, generating a series of physical and chemical reactions. For example, the plasma breaks the original chemical bonds on the surface of the metal layer 40, generating complex chemical reactions on the surface of the metal layer 40 to introduce new functional groups. These new functional groups graft with the metal bonds on the surface of the metal layer 40, forming a large number of branches on the surface of the metal layer 40. These branches can increase the adhesion between the metal layer 40 and the subsequently formed protective layer 30, reduce defects at the interface between the metal layer 40 and the subsequently formed protective layer 30, and improve the reliability of the formed outer shell 100.

[0123] In one exemplary embodiment, this disclosure also provides an electronic device, which may include automobiles, terminal devices such as mobile phones, tablets, computers, etc., and wearable devices such as watches, headphones, bracelets, etc., but is not limited thereto. The electronic device may include the housing provided in the above embodiments of this disclosure. The housing may partially or completely cover the main structure of the electronic device to provide both protection and decoration. Since the structure of the housing can present an ice flower appearance effect, an ice flower texture appearance can be achieved without using ice flower paint, allowing housings made of various materials to achieve an ice flower texture effect, thus improving user satisfaction.

[0124] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0125] It should be understood that the present invention 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 the invention is limited only by the appended claims.

Claims

1. A housing, characterized in that The shell comprises: a substrate layer; a texture layer disposed on a surface of the substrate layer, a surface of the texture layer away from the substrate layer being provided with a preset texture; a protective layer disposed on a surface of the texture layer, the protective layer being light-transmissive; wherein a forming material of the texture layer comprises a coating, the coating comprising at least two solvents with different relative volatilization rates.

2. The housing of claim 1, wherein The coating comprises an ultraviolet light-cured coating.

3. The housing of claim 1, wherein A surface roughness of the substrate layer is 0.40 μm-2.24 μm.

4. The housing of claim 1, wherein A thickness of the texture layer is 6 μm-50 μm.

5. The enclosure of claim 1, wherein, The protective layer comprises a middle layer and a surface layer disposed in layers, the middle layer covering the texture layer, a hardness of the surface layer being greater than a hardness of the middle layer.

6. The housing of claim 5, wherein, The middle layer has a thickness of 3 μm-12 μm; and / or, The surface layer has a thickness of 5 μm-20 μm.

7. The housing of claim 5, wherein, Materials of the middle layer and the surface layer comprise a coating, the coating comprising an ultraviolet light-cured coating.

8. The enclosure of any one of claims 1-7, wherein, The shell further comprises a metal layer covering a surface of the texture layer.

9. The housing of claim 8, wherein, The metal layer is made of at least one of zinc, nickel, silver, copper, chromium, cadmium, gold, tin, and rhodium.

10. The housing of claim 8, wherein, The metal layer has a thickness of 0.01 μm-0.50 μm.

11. A method of making a housing, characterized by: The method for manufacturing the shell comprises: disposing a coating on a surface of a substrate layer, the coating being cured to form a texture layer, a surface of the texture layer away from the substrate layer being provided with a preset texture; wherein the coating comprises at least two solvents with different relative volatilization rates; forming a protective layer on a surface of the texture layer, the protective layer being light-transmissive.

12. The method of claim 11, wherein The coating comprises an ultraviolet light-cured coating; The curing conditions of the ultraviolet light curing coating include: ultraviolet light intensity is 300 mJ / cm 2 -1500 mJ / cm 2 , curing temperature is 30℃-70℃, and curing time is 1min-8min.

13. The method of claim 12, wherein The ultraviolet light-cured coating is disposed on a surface of the substrate layer by a spraying process, a spraying pressure of the spraying process being 2 kPa-9 kPa.

14. The method of claim 11, wherein The forming of the protective layer on the surface of the texture layer comprises: disposing a first coating on a surface of the texture layer, the first coating forming a middle layer under a first preset condition; disposing a second coating on a surface of the middle layer, the second coating forming a surface layer under a second preset condition; wherein a hardness of the surface layer is greater than a hardness of the middle layer.

15. The method of claim 14, wherein the shell is formed by a process selected from the group consisting of injection molding, blow molding, rotational molding, and thermoforming. The first coating and the second coating are both ultraviolet light-cured coatings; The first preset condition includes: ultraviolet light intensity is 100 mJ / cm 2 -500 mJ / cm 2 , the curing temperature is 45-75 ℃, and the curing time is 1-8 min; and / or, The second preset condition includes: the ultraviolet light intensity is 300 mJ / cm 2 -1000 mJ / cm 2 , the curing temperature is 30-70℃, and the curing time is 1-8 min.

16. The method of claim 11, wherein Before the forming of the texture layer, the method for manufacturing the shell further comprises: performing surface treatment on the substrate layer.

17. The method of making a shell of any of claims 11-16, wherein, Before the forming of the protective layer, the method for manufacturing the shell further comprises: forming a metal layer covering a surface of the texture layer.

18. An electronic device, comprising: The electronic device comprises the shell according to any one of claims 1-10.

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