Shell manufacturing process, shell and electronic equipment

Abstract

The invention provides a manufacturing process of a shell, the shell and electronic equipment. The manufacturing process comprises the following steps: arranging a pattern layer on a decorative layer of a shell; a transition layer is arranged on the pattern layer, a protection layer is arranged on the transition layer, and the material systems of the pattern layer, the transition layer and the protection layer are the same. According to the scheme, the color of the pattern layer can be brighter, and the color precision is high. Moreover, the pattern layer, the transition layer and the protection layer are of the same material system and have the same material properties, the transition layer can provide good adhesive force for the protection layer, and the protection layer is used for protecting the shell, so that the smudginess resistance, wear resistance, fading resistance and other properties of the shell are improved, and the appearance effect is better.

Description

Technical Field

[0001] The present application relates to the field of processing and manufacturing technology, and in particular to a shell manufacturing process, a shell and an electronic device. Background Art

[0002] As users pursue the feel and lightness of electronic devices, leather battery covers are widely used in the mobile phone field. However, due to the limitations of leather materials and processes, leather battery covers are mostly solid-color, single-color, and cannot be made into gradient colors, multi-color blocks, etc. Some manufacturers splice leathers of different colors to enrich the appearance, but there are reliability risks and the process difficulty is relatively high. Summary of the invention

[0003] The present application provides a shell manufacturing process, a shell and an electronic device, wherein the shell has richer colors, a more refined appearance, and high anti-fouling and anti-wear properties.

[0004] A manufacturing process of a shell, comprising:

[0005] Arranging a pattern layer on the decorative layer of the shell;

[0006] A transition layer is arranged on the pattern layer, and a protective layer is arranged on the transition layer. The material systems of the pattern layer, the transition layer and the protective layer are the same.

[0007] Optionally, providing a pattern layer on the decorative layer of the housing includes:

[0008] The pattern layer is printed on the decorative layer of the shell using 3D printing technology.

[0009] Optionally, the manufacturing process further includes:

[0010] The pattern layer just printed is cured by a printing and curing method.

[0011] Optionally, a UV curing lamp is used to cure the pattern layer, and the curing energy is not less than 373 mJ / cm 2 , curing light intensity is not less than 3000mw / cm 2 .

[0012] Optionally, the manufacturing process further includes:

[0013] After the transition layer is provided and before the protective layer is provided, the transition layer is cured.

[0014] Optionally, the transition layer is baked and cured, with a baking time of 3-5 minutes and a baking temperature of 60-80°C.

[0015] Optionally, the manufacturing process further includes:

[0016] After the protective layer is provided, the protective layer is baked and cured, the baking time is 3-5 minutes, and the baking temperature is 60-80°C.

[0017] Optionally, the step of printing a pattern layer on the decorative layer of the shell by 3D printing includes:

[0018] A six-color 3D inkjet printer is used to print the pattern layer on the decorative layer.

[0019] Optionally, the decorative layer is a plain leather layer of a high molecular polymer arranged on a cloth-based material, and the six-color 3D inkjet printer uses ink containing the high molecular polymer.

[0020] Optionally, the manufacturing process further includes:

[0021] After the pattern layer is printed and before the transition layer is arranged, the pattern layer is subjected to dust removal treatment.

[0022] Optionally, the manufacturing process further includes:

[0023] Adhere a hot melt adhesive film to a surface of the decorative layer facing away from the pattern layer, and adhere the base material of the shell to the hot melt adhesive film;

[0024] The substrate and the decorative layer are firstly hot pressed, and after the substrate and the decorative layer are bonded, they are then cold pressed and maintained.

[0025] Optionally, the manufacturing process further includes:

[0026] After the substrate and the decorative layer are cut and pressed together, a waterproof finishing layer is provided on the cut surfaces.

[0027] Optionally, the manufacturing process further includes:

[0028] The fiberglass cloth is immersed in resin to form a fiberglass resin composite layer;

[0029] At least two layers of the glass fiber resin are compositely stacked and heat-pressed to form the base material of the shell.

[0030] A housing, comprising:

[0031] substrate; and

[0032] The decorative layer is arranged on the substrate, and a pattern layer, a transition layer and a protective layer are sequentially stacked on the decorative layer, and the material system of the pattern layer, the transition layer and the protective layer is the same.

[0033] Optionally, the pattern layer is formed by 3D printing; and / or the pattern layer, transition layer and protective layer contain the same high molecular polymer.

[0034] Optionally, the decorative layer is a plain leather layer of a polymer provided on a cloth-based material, and the pattern layer is an ink layer containing the polymer.

[0035] Optionally, the thickness of the pattern layer is set to 8-12 um, or the thickness of the pattern layer is set to 30-70 um, and the pattern layer forms a concave-convex three-dimensional texture structure.

[0036] Optionally, the transition layer is configured as a transparent coating, the material of which is the same or similar to the polymer in the pattern layer, and the thickness is 3-5um; the protective layer is configured as a transparent coating, the material of which is the same or similar to the polymer in the pattern layer, and the thickness is 10-15um.

[0037] Optionally, the pattern layer is a TPU ink layer, and the transition layer and the protective layer are configured as PU coatings.

[0038] Optionally, the substrate comprises a plurality of stacked glass fiber resin composite layers, wherein the glass fiber resin composite layers are formed by dipping glass fiber cloth into resin, and the substrate is bonded to a surface of the decorative layer facing away from the pattern layer.

[0039] Optionally, after the substrate and the decorative layer are cut, cutting surfaces aligned vertically are formed, and a waterproof finishing layer is provided on the cutting surfaces.

[0040] Optionally, the waterproof finishing layer is configured as a pure water-based ink layer, which is formed by baking and curing.

[0041] Optionally, the thickness of the substrate is set to 0.4-0.45 mm.

[0042] An electronic device comprises the housing described in any one of the above items.

[0043] The present application provides a shell manufacturing process, a shell and an electronic device, wherein a pattern layer is formed on the decorative layer by 3D printing, and the color is more vivid and the color accuracy is high. In addition, the pattern layer, the transition layer and the protective layer are made of the same material and have the same material properties. The transition layer can provide good adhesion to the protective layer. The protective layer is used to protect the shell, which improves the shell's anti-fouling, wear-resistant, anti-fading and other properties, and the appearance effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a flow chart of a manufacturing process of a housing shown in an exemplary embodiment of the present application;

[0045] Figure 2is another flow chart of a manufacturing process of a housing shown in an exemplary embodiment of the present application;

[0046] Figure 3 is another flow chart of a manufacturing process of a housing according to an exemplary embodiment of the present application;

[0047] Figure 4 It is a cross-sectional view of a housing shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0048] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application.

[0049] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one, and will be separately described if only "one" is referred to. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper", "top", "bottom" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0050] Please refer to Figure 1 , Figure 1 The flowchart is a process for manufacturing a shell according to an exemplary embodiment of the present application.

[0051] The present application provides a manufacturing process of a shell, and the manufacturing process includes step S10 and step S20.

[0052] Step S10, providing a pattern layer on the decoration layer of the housing.

[0053] In step S10, a pattern layer can be printed on the decorative layer of the shell by using 3D printing technology, and specifically, a 3D inkjet printer can be used for printing. The 3D inkjet printer can be a four-color 3D inkjet printer or a six-color 3D inkjet printer. The multi-color ink cartridge can make the color of the pattern layer more vivid and the color accuracy is high. The decorative layer is provided, for example, bonded to the base material of the shell, and the decorative layer can be a plain leather layer of PU (polyurethane) material, but is not limited thereto.

[0054] Before printing the pattern layer on the decorative layer, the material used as the decorative layer can be pre-cut, dusted and positioned. For example, the rolled material can be cut into multiple sheets. When removing dust, use a spray gun to blow away dust, hair and other impurities on the surface of the decorative layer material. When positioning, fix the decorative layer material on the 3D printer table through the positioning holes.

[0055] Step S20, a transition layer is arranged on the pattern layer, and a protective layer is arranged on the transition layer. That is to say, a transition layer is arranged on the pattern layer first, and then a protective layer is arranged on the transition layer. The material system of the pattern layer, the transition layer, and the protective layer is the same. The "same material system" mentioned here means that the main components of the three are the same or similar. Under the same material system, the material properties are the same, and the transition layer can join the pattern layer and the protective layer together to increase the adhesion of the protective layer. The main function of the protective layer is to protect the decorative layer and the pattern layer, improve the anti-fouling and wear resistance, and help to keep the appearance clean and tidy and reduce wear. The thickness of the transition layer can be set to 3-5um, such as 3um, 4um, 5um, but not limited to this. The thickness of the protective layer can be set to 10-15um, such as 10um, 11um, 12um, 13um, 14um, 15um, but not limited to this. In one embodiment, the transition layer and the protective layer can be formed by spraying, but not limited to this. The thickness of the protective layer is set to be different, and different touch feelings can be achieved. For example, the feel of the original leather can be reproduced by controlling the thickness of the protective layer and the spraying viscosity.

[0056] The manufacturing process of the shell provided by the present application is that a pattern layer is arranged on the decorative layer, and the color is more vivid and the color precision is high. In addition, the pattern layer, the transition layer and the protective layer are made of the same material system and have the same material properties. The transition layer can provide good adhesion to the protective layer to increase the bonding force between the layers. The protective layer is used to protect the shell, improve the shell's anti-fouling, wear-resistant, anti-fading and other properties, and make the shell's appearance effect better.

[0057] In one embodiment, the thickness of the pattern layer can be set to 8-12um, such as 8um, 9um, 10um, 11um, 12um, but not limited thereto, so that the pattern layer is relatively thin. In some other embodiments, the thickness of the pattern layer can be set to 30-70um, such as 30um, 40um, 50um, 60um, 70um, and increasing the thickness of the pattern layer can make the pattern layer present a concave-convex three-dimensional texture effect, such as a three-dimensional relief texture effect.

[0058] Please refer to Figure 2 , Figure 2 This is another flow chart of a process for manufacturing a housing according to an exemplary embodiment of the present application.

[0059] In one embodiment, the manufacturing process of the housing includes steps S10, S21, S22, S30, S40, and S50. Figure 1 Step S20 in the method includes step S21 and step S22.

[0060] In one embodiment, in step S10, the manufacturing process includes: using 3D printing to print a pattern layer on the decorative layer of the shell, and curing the pattern layer just printed by printing and curing. Printing and curing at the same time, no secondary curing is required. In one embodiment, UV curing lamps can be set on both sides of the inkjet head of the 3D printer, so that the printed pattern layer can be immediately irradiated by the curing lamp, so that the pattern layer is quickly cured, saving curing time. The curing energy of the UV curing lamp is not less than 373mJ / cm 2 , curing light intensity is not less than 3000mw / cm 2 Of course, in some other embodiments, after the pattern layer is printed, the pattern layer can be cured by natural drying at room temperature.

[0061] In one embodiment, Figure 2 As shown, the manufacturing process also includes step S30: after setting the transition layer and before setting the protective layer, curing the transition layer. Step S30 is arranged after step S21 and before step S22. After the transition layer is cured, a hard transition layer is formed, which is convenient for the subsequent setting of the protective layer. In one embodiment, the transition layer can be cured by baking, and the baking time is 3-5 minutes and the baking temperature is 60-80°C. Specifically, the baking time can be 3 minutes, 4 minutes, and 5 minutes. The baking temperature can be 60°C, 65°C, 70°C, 75°C, and 80°C, but is not limited to this, and can be selected according to actual needs. For example, when a higher baking temperature is selected, the baking time can be shortened accordingly, and when a lower baking temperature is selected, the baking time can be increased accordingly.

[0062] In one embodiment, the manufacturing process further includes step S40: after the protective layer is set, the protective layer is baked and cured, the baking time is 3-5 minutes, and the baking temperature is 60-80°C. Step S40 is arranged after step S22. The baking time can be 3 minutes, 3.5 minutes, 4 minutes, 4.5 minutes, and 5 minutes. The baking temperature can be 60°C, 63°C, 65°C, 68°C, 70°C, 72°C, 75°C, 77°C, and 80°C, but is not limited to this, and can be selected according to actual needs. For example, when a higher baking temperature is selected, the baking time can be shortened accordingly, and when a lower baking temperature is selected, the baking time can be increased accordingly.

[0063] In one embodiment, in step S10, the step of printing a pattern layer on the decorative layer of the housing by 3D printing specifically includes:

[0064] The pattern layer is printed on the decorative layer using a six-color 3D inkjet printer. The six-color 3D inkjet printer is equipped with six-color ink cartridges, which can mix a variety of colors, making the color of the pattern layer richer and brighter, and the appearance effect better.

[0065] In one embodiment, the decorative layer is a plain leather layer with a polymer on a cloth-based material, and the six-color 3D inkjet printer uses ink containing the polymer. In this way, the decorative layer and the pattern layer are both made of the same system of materials containing the same polymer, and have stronger adhesion. Specifically, the decorative layer can be set as a PU layer, and TPU ink is used in the six-color 3D inkjet printer. The PU layer is a leather material of polyurethane, and the TPU ink is of the same material system as the PU layer, with a smooth and bright appearance, good light-shielding properties, alcohol resistance, strong adhesion, etc., and is particularly suitable for printing on a decorative layer made of PU material.

[0066] In one embodiment, the transition layer is configured as a transparent PU layer, and the configuration method includes but is not limited to spraying. The protective layer is configured as a transparent PU layer, and the configuration method includes but is not limited to spraying. The PU layer has good adhesion, good durability and good feel. For example, the transition layer can be made of polyurethane material. The ratio of the main agent, curing agent and diluent is (100): (5): (100-150). For another example, the protective layer can be made of polyurethane material. The ratio of the main agent, curing agent and diluent is (100): (40): (30-50).

[0067] In one embodiment, the manufacturing process further includes step S50: after printing the pattern layer and before setting the transition layer, the pattern layer is subjected to dust removal. Dust removal can remove impurities such as dust and hair, so as to facilitate good bonding between the transition layer and the pattern layer. Step S50 is arranged after step S10 and before step S21. Dust removal methods include but are not limited to the method of using a spray gun to blow.

[0068] After the steps of pre-cutting of incoming materials, dust removal after pre-cutting, 3D printing of the case layer, dust removal of the case layer, spraying of the transition layer, and spraying of the protective layer, the decorative layer material can be cut again, and the cutting size depends on the project size.

[0069] Please refer to Figure 3 , Figure 3 This is another flow chart of a process for manufacturing a housing according to an exemplary embodiment of the present application.

[0070] In one embodiment, the manufacturing process further includes step S200 and step S210.

[0071] Step S200 , bonding a hot melt adhesive film to a surface of the decoration layer that is opposite to the pattern layer, and bonding a substrate to the hot melt adhesive film.

[0072] In step S200, the hot melt adhesive film may be heated to 60-70°C and then bonded to the decorative layer, and then the substrate may be bonded to the hot melt adhesive film to ensure that the substrate and the decorative layer remain relatively fixed, thereby achieving pre-bonding before hot pressing.

[0073] Step S210, hot pressing the substrate, the hot melt adhesive film and the decorative layer, and then cold pressing and maintaining the pressure after the substrate and the decorative layer are bonded.

[0074] In step S210, the pre-bonded substrate, hot melt adhesive film and decorative layer are placed in a hot press, and the mold temperature can be set to 120-150°C. After the substrate and the decorative layer are completely bonded, the finished product is placed in a cold press for cold pressing and pressure holding. In this solution, the decorative layer and the substrate are hot-pressed and bonded, and the fit is better. After the pressure holding is completed, the bonded substrate and decorative layer can also be cut, and the cutting method includes but is not limited to die punching.

[0075] In one embodiment, Figure 3As shown, the manufacturing process also includes a step S220 arranged after step S210: cutting and laminating the substrate and the decorative layer, and setting a waterproof modification layer on the cutting surface. In this way, on the one hand, water can be prevented from entering the edge of the cutting surface, and on the other hand, defects such as edge burrs can be modified. Specifically, transparent or colored edge oil can be applied on the cutting surface by automated equipment, and the number of applications is not limited, which can be one or more times. The edge oil composition can be, for example, pure water-based ink. After application, it can be baked and cured. For example, the edge oil baking time is 30±10min at 45±5℃ for surface drying and 60min at 75±5℃ for complete drying. After drying, check whether there is an oil edge overflow defect and repair it. It should be noted that the waterproof modification layer is not limited to being set as an ink layer. The thickness of the waterproof modification layer can be set to 15-25μm, such as 15μm, 18μm, 20μm, 23μm, 25μm, but is not limited to this.

[0076] In one embodiment, the manufacturing process further includes a substrate manufacturing process, and the substrate manufacturing process includes step S300 and step S310.

[0077] Step S300, immersing the glass fiber cloth in resin to form a glass fiber resin composite layer. Exemplarily, the glass fiber resin composite layer is about 0.1 mm. After step S300, the large roll of glass fiber cloth that has been impregnated with resin can be cut into pieces of about 1 meter in length for subsequent processing.

[0078] Step S310, at least two layers of the glass fiber resin composite are stacked and hot pressed to form the substrate of the shell. In step S310, the stacked glass fiber resin composite layers are placed in a hot pressing mold and hot pressed by a hot press. The molding temperature is between 120-130°C and the time is about 10 minutes. In some embodiments, the thickness of the substrate can be set to 0.4-0.45mm. After hot pressing, the substrate can be processed by CNC. The substrate processed according to the above manufacturing process has high strength and light weight.

[0079] It should also be noted that through the shell manufacturing process provided in this application, various appearance decorations such as color block splicing, gradient color, customized patterns, and texture effects with a three-dimensional relief feel can be made.

[0080] Please refer to Figure 4 , Figure 4 A cross-sectional view of a housing showing an exemplary embodiment of the present application.

[0081] The present application also provides a housing 100 , which may be a housing of an electronic device, including but not limited to a battery cover of the electronic device.

[0082] The housing 100 includes a substrate 10 and a decorative layer 20 disposed on the substrate 10. The decorative layer 20 can be bonded to the substrate 10, but is not limited thereto. A pattern layer 21, a transition layer 22 and a protective layer 23 are sequentially disposed on the decorative layer 20, and the pattern layer 21, the transition layer 22 and the protective layer 23 are stacked and are of the same material system. With such an arrangement, the pattern layer 21 has bright colors and high color accuracy. Moreover, the pattern layer 21, the transition layer 22 and the protective layer 23 use the same material system and have the same material properties. The transition layer 22 can provide good adhesion to the protective layer 23. The protective layer can include a decorative layer and a pattern layer, thereby improving the anti-fouling, wear-resistant, anti-fading and other properties of the housing 100, and the appearance effect is better. In one embodiment, the pattern layer 21, the transition layer 22 and the protective layer 23 contain the same polymer, and the polymer includes but is not limited to polyester or polyether polymer.

[0083] In one embodiment, the decorative layer 20 is configured as a plain leather layer of a polymer 202 on a cloth-based material 201. Specifically, the plain leather layer can be a cloth-based PU (polyurethane) material, and the pattern layer 21 is an ink layer containing the polymer. Exemplarily, the decorative layer is a cloth-based PU material, and the pattern layer 21 is a TPU ink layer. In this way, the decorative layer 20 has better stability, chemical resistance, resilience and mechanical properties, has smaller compression deformation, and has good heat insulation, sound insulation, shock resistance and anti-toxic properties. In addition, the TPU ink layer is particularly suitable for printing on a decorative layer made of PU material, and has better adhesion to the decorative layer 20.

[0084] It should be noted that the cloth base material 201 of the decoration layer 20 is bonded to the substrate 10, and the pattern layer 21 is printed on the polymer 202 of the decoration layer 20. For example, the pattern layer 21 can be printed on the decoration layer 20 using a four-color 3D inkjet printer or a six-color 3D inkjet printer, with bright colors and high color accuracy.

[0085] In one embodiment, the thickness of the pattern layer 21 can be set to 8-12um. Specifically, it can be 8um, 9um, 10um, 11um, 12um, so that a thin and flexible pattern layer 21 can be formed. In another embodiment, the thickness of the pattern layer 21 can be set to 30-70um. Specifically, it can be 30um, 35um, 40um, 45um, 50um, 55um, 60um, 65um, 70um, so that a pattern layer 21 with a concave-convex three-dimensional texture structure can be formed, for example, a three-dimensional relief texture effect.

[0086] In one embodiment, the transition layer 22 is configured as a transparent coating, the material is the same as or similar to the polymer in the pattern layer 21, and the thickness is 3-5um. The protective layer 23 is configured as a transparent coating, the material is the same as or similar to the polymer in the pattern layer 21, and the thickness is 10-15um. That is to say, the material of the protective layer 23 is the same as the material system of the pattern layer 21 and the transition layer 22, so that the protective layer 23 can be better attached to the transition layer 22, protect the decorative layer 20 and the pattern layer 21, and improve the anti-fouling and wear resistance. Specifically, the transition layer 22 can be configured as a transparent PU coating, and the PU coating can be formed by spraying, and the ratio of the main agent, curing agent, and diluent is (100): (5): (100~150). The protective layer 23 is configured as a transparent PU coating, which can be formed by spraying, and the ratio of the main agent, curing agent, and diluent is (100): (40): (30~50).

[0087] The thickness of the transition layer 22 can be set to 3-5um, specifically 3um, 4um, 5um, but not limited thereto. The thickness of the protective layer 23 can be set to 10-15um, specifically 10um, 11um, 12um, 13um, 14um, 15um, but not limited thereto.

[0088] In one embodiment, the substrate 10 includes a plurality of glass fiber resin composite layers 11 stacked and arranged, the glass fiber resin composite layer 11 is formed by immersing woven glass fiber cloth in resin, the glass fiber resin composite layer 11 is at least two layers, and the plurality of glass fiber resin composite layers 11 can be hot-pressed and bonded. The substrate 10 is bonded to the surface of the decorative layer 20 on the side facing away from the pattern layer 21. In this way, the substrate 10 is formed by stacking and hot-pressing a plurality of glass fiber resin composite layers 11, and has relatively high strength and hardness, and has a flame retardant effect. In one embodiment, the thickness of the substrate 10 is 0.4-0.45mm. Specifically, it can be 0.41mm, 0.42mm, 0.43mm, 0.44mm, 0.45mm, but not limited to this. In this embodiment, the single-layer glass fiber resin composite layer 11 is 0.1mm, and the substrate 10 can be formed by hot-pressing four or five layers of glass fiber resin composite layers 11, which is lighter and thinner than the existing substrate.

[0089] In one embodiment, the substrate 10 and the decorative layer 20 are cut to form a cutting surface aligned up and down, and a waterproof finishing layer 30 is provided on the cutting surface. The waterproof finishing layer 30 can prevent water from entering from the edge of the cutting surface on the one hand, and can also modify defects such as edge burrs on the other hand. Specifically, an automated device can be used to brush transparent or colored edge oil on the cutting surface to form the waterproof finishing layer 30. The thickness of the waterproof finishing layer 30 is set to 15-25μm, for example, 15μm, 18μm, 20μm, 23μm, 25μm, but not limited to this. In one embodiment, the waterproof finishing layer 30 can be set to pure water-based ink and cured by baking.

[0090] The present application also provides an electronic device, which includes but is not limited to a mobile phone, a tablet computer, a mobile payment terminal, etc. The electronic device includes the housing 100 described above. The housing 100 may be a battery back cover, but is not limited thereto.

[0091] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A process for manufacturing a housing, characterized in that: include: Arranging a pattern layer on the decorative layer of the shell; A transition layer is arranged on the pattern layer, and a protective layer is arranged on the transition layer. The material systems of the pattern layer, the transition layer and the protective layer are the same.

2. The manufacturing process of the housing according to claim 1, characterized in that: The step of providing a pattern layer on the decorative layer of the housing comprises: The pattern layer is printed on the decorative layer of the shell using 3D printing technology.

3. The manufacturing process of the housing according to claim 2, characterized in that: The manufacturing process also includes: The pattern layer just printed is cured by a printing and curing method.

4. The manufacturing process of the housing according to claim 3, characterized in that: The pattern layer is cured by a UV curing lamp, and the curing energy is not less than 373mJ / cm 2 , curing light intensity is not less than 3000mw / cm 2 .

5. The manufacturing process of the housing according to claim 1, characterized in that: The manufacturing process also includes: After the transition layer is provided and before the protective layer is provided, the transition layer is cured.

6. The manufacturing process of the housing according to claim 5, characterized in that: The transition layer is baked and cured, the baking time is 3-5 minutes, and the baking temperature is 60-80°C.

7. The manufacturing process of the housing according to claim 1, characterized in that: The manufacturing process also includes: After the protective layer is provided, the protective layer is baked and cured, the baking time is 3-5 minutes, and the baking temperature is 60-80°C.

8. The manufacturing process of the housing according to any one of claims 2 to 7, characterized in that: The method of printing a pattern layer on the decorative layer of the shell by 3D printing comprises: A six-color 3D inkjet printer is used to print the pattern layer on the decorative layer.

9. The manufacturing process of the housing according to claim 8, characterized in that: The decorative layer is a plain leather layer of a high molecular polymer arranged on a cloth base material, and the six-color 3D inkjet printer uses ink containing the high molecular polymer.

10. The manufacturing process of the housing according to claim 1, characterized in that: The manufacturing process also includes: After the pattern layer is printed and before the transition layer is arranged, the pattern layer is subjected to dust removal treatment.

11. The manufacturing process of the housing according to claim 1, characterized in that: The manufacturing process also includes: Adhere a hot melt adhesive film to a surface of the decorative layer facing away from the pattern layer, and adhere the base material of the shell to the hot melt adhesive film; The substrate and the decorative layer are firstly hot pressed, and after the substrate and the decorative layer are bonded, they are then cold pressed and maintained.

12. The manufacturing process of the housing according to claim 11, characterized in that: The manufacturing process also includes: After the substrate and the decorative layer are cut and pressed together, a waterproof finishing layer is provided on the cut surfaces.

13. The manufacturing process of the housing according to claim 1, characterized in that: The manufacturing process also includes: The fiberglass cloth is immersed in resin to form a fiberglass resin composite layer; At least two layers of the glass fiber resin are compositely stacked and heat-pressed to form the base material of the shell.

14. A housing, characterized in that: include: Base material; and The decorative layer is arranged on the substrate, and a pattern layer, a transition layer and a protective layer are sequentially stacked on the decorative layer, and the material system of the pattern layer, the transition layer and the protective layer is the same.

15. The housing according to claim 14, characterized in that The pattern layer is formed by 3D printing; and / or The pattern layer, transition layer and protection layer contain the same high molecular polymer.

16. The housing according to claim 14, characterized in that The decorative layer is a plain leather layer of a polymer provided on a cloth-based material, and the pattern layer is an ink layer containing the polymer; and / or The thickness of the pattern layer is set to 8-12 um, or the thickness of the pattern layer is set to 30-70 um, and the pattern layer forms a concave-convex three-dimensional texture structure.

17. The housing according to claim 16, characterized in that The transition layer is configured as a transparent coating, the material of which is the same or similar to the polymer in the pattern layer, and the thickness is 3-5um; the protective layer is configured as a transparent coating, the material of which is the same or similar to the polymer in the pattern layer, and the thickness is 10-15um.

18. The housing according to claim 17, characterized in that The decorative layer is a cloth-based PU material, the pattern layer is a TPU ink layer, and the transition layer and the protective layer are configured as PU coatings.

19. The housing according to claim 14, characterized in that The substrate comprises a plurality of stacked glass fiber resin composite layers, wherein the glass fiber resin composite layers are formed by dipping glass fiber cloth into resin, and the substrate is bonded to a surface of the decorative layer on one side facing away from the pattern layer.

20. The housing according to claim 19, characterized in that After the substrate and the decorative layer are cut, a cutting surface aligned up and down is formed, and a waterproof finishing layer is provided on the cutting surface.

21. The housing according to claim 20, characterized in that The waterproof modification layer is set as a pure water-based ink layer, which is formed by baking and curing.

22. The housing according to claim 14, characterized in that The thickness of the substrate is set to 0.4-0.45 mm.

23. An electronic device, characterized in that: Comprising a housing as claimed in any one of claims 14 to 22.

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