CN111016485B - Preparation method of shell, shell and electronic equipment - Google Patents

Preparation method of shell, shell and electronic equipment Download PDF

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Publication number
CN111016485B
CN111016485B CN201911248982.5A CN201911248982A CN111016485B CN 111016485 B CN111016485 B CN 111016485B CN 201911248982 A CN201911248982 A CN 201911248982A CN 111016485 B CN111016485 B CN 111016485B
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layer
ultraviolet curing
pigment
thermal sublimation
shell
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CN111016485A (en
Inventor
刘思颖
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/14—Multicolour printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F9/00—Designs imitating natural patterns
    • B44F9/10—Designs imitating natural patterns of metallic or oxidised metallic surfaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details

Abstract

The embodiment of the invention provides a preparation method of a shell, the shell and electronic equipment, wherein the preparation method of the shell comprises the following steps: forming an ultraviolet curing glue layer on one surface of the base material; penetrating the pigment into the ultraviolet curing glue layer through a thermal sublimation treatment process; and forming a coating layer on the ultraviolet curing adhesive layer with the pigment. The shell preparation method provided by the embodiment of the invention can solve the problem of large noise of the surface pattern of the shell.

Description

Preparation method of shell, shell and electronic equipment
Technical Field
The invention relates to the technical field of shell preparation, in particular to a shell preparation method, a shell and electronic equipment.
Background
In recent years, composite boards have been widely used in end products due to their glass-like texture and lower cost than glass, and in order to improve the appearance of composite boards, the color of the boards is usually gradually changed by printing. The patterns formed by the printing process have relatively large noise points, so that certain defects exist in the appearance process.
Therefore, it is urgently required to develop a manufacturing method of a case, and an electronic device.
Disclosure of Invention
The embodiment of the invention provides a preparation method of a shell, the shell and electronic equipment, and aims to solve the problem that the surface pattern noise of the shell in the prior art is large.
In one aspect, an embodiment of the present invention provides a method for manufacturing a housing, including the following steps:
forming an ultraviolet curing glue layer on one surface of the base material;
penetrating the pigment into the ultraviolet curing glue layer through a thermal sublimation treatment process;
and forming a coating layer on the ultraviolet curing adhesive layer with the pigment.
According to an aspect of the present invention, the step of forming the uv curable glue layer on one surface of the substrate comprises:
coating ultraviolet curing glue on the surface of the base material, and curing the ultraviolet curing glue to form an ultraviolet curing glue layer;
wherein, ultraviolet curing glues and includes at least: 0-30 wt% of hexafunctional resin and 10-60 wt% of difunctional resin relative to the total weight of the ultraviolet curing adhesive.
According to one aspect of the present invention, in the step of forming the uv curable adhesive layer on one surface of the substrate, the curing energy is 400mj to 600 mj.
According to one aspect of the present invention, the step of penetrating the pigment into the uv curable adhesive layer by the thermal sublimation treatment process includes:
covering a thermal sublimation membrane on the ultraviolet curing adhesive layer, carrying out thermal sublimation treatment, coating pigment on the thermal sublimation membrane, and removing the thermal sublimation membrane after the pigment permeates into the ultraviolet curing adhesive layer, wherein the thermal sublimation treatment temperature is 100-150 ℃, the thermal sublimation treatment pressure is 5-30 kg, and the thermal sublimation treatment time is 5-60 min.
According to an aspect of the present invention, in the step of forming the uv curable adhesive layer on one surface of the substrate, the uv curable adhesive layer has a thickness of 5 μm to 20 μm.
According to one aspect of the invention, in the step of forming the coating layer on the ultraviolet curing glue layer with the pigment, the coating time is 1-6 h, and the thickness of the coating layer is 100-200 nm.
According to one aspect of the invention, the step of forming the coating layer on the ultraviolet curing glue layer with the pigment further comprises the following steps:
forming a silk-screen layer on the coating layer, wherein the silk-screen layer at least comprises a white bottom layer and a light shielding layer, and the white bottom layer is positioned between the light shielding layer and the coating layer;
the thickness of the white bottom layer is 8-12 μm, the processing temperature of the white bottom layer is 60-100 ℃, and the processing time of the white bottom layer is 20-40 min; and/or the thickness of the shading layer is 8-12 μm, the treatment temperature of the shading layer is 60-100 ℃, and the treatment time of the shading layer is 20-40 min.
According to one aspect of the present invention, a hardening liquid is coated on the other surface of the substrate to be hardened to form a hardened layer, wherein the hardening temperature is 40 ℃ to 60 ℃, the hardening time is 1min to 10min, and the thickness of the hardened layer is 5 μm to 20 μm.
On the other hand, the embodiment of the invention also provides a shell, and the shell is prepared by the method.
In another aspect, an embodiment of the present invention further provides an electronic device, which includes a housing, where the housing is the above-mentioned housing.
In the preparation method of the shell, the pigment is permeated into the ultraviolet curing glue layer through the thermal sublimation process after the ultraviolet curing glue layer is formed on the surface of the base material. In the process of thermal sublimation, the pigment molecules have a larger moving range, so that the thermal sublimation process can enable the pigment to be more uniformly permeated into the ultraviolet curing glue layer, and noise can not be generated on the pattern. When the surface of the shell needs to form a pattern with the gradient color, no obvious boundary exists between two adjacent colors, and the shell has a better gradient effect. Finally, a coating layer is continuously formed on the ultraviolet curing adhesive layer, so that the metal texture of the appearance of the shell can be improved, and the expressive force of the appearance of the shell is further improved. Therefore, the shell preparation method provided by the embodiment of the invention can solve the problem of large noise of the surface pattern of the shell.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings in which like or similar reference characters refer to the same or similar parts.
FIG. 1 is a schematic flow chart of a method of making a housing according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a housing of an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method of making a housing according to another embodiment of the present invention;
fig. 4 is a partial cross-sectional view of a housing of an embodiment of the invention.
Description of reference numerals:
10. a substrate; 20. ultraviolet light curing the adhesive layer; 30. coating a film layer; 40. screen printing layer; 41. a white bottom layer; 42. a light-shielding layer; 50. and hardening the layer.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated for convenience in describing the invention and to simplify description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The directional terms appearing in the following description are intended to be illustrative in all directions, and are not intended to limit the specific construction of embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For better understanding of the present invention, a method for manufacturing a case, and an electronic device according to an embodiment of the present invention will be described in detail below with reference to fig. 1 to 4.
Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic flow chart illustrating a method for manufacturing a housing according to a first embodiment of the present invention, and fig. 2 is a partial cross-sectional view illustrating a housing manufactured by the method shown in fig. 1.
According to fig. 1 and 2, the method for manufacturing the case according to the first embodiment of the present invention includes the steps of:
step S101: an ultraviolet curable adhesive layer 20 is formed on one surface of the substrate 10.
The substrate 10 may have any shape, such as a plate shape, a column shape, a bar shape, a frame shape, and the like. Preferably, the substrate 10 is plate-shaped to facilitate post-processing to form the housing. The substrate 10 may be made of any suitable material, for example, the substrate 10 is a composite board.
Step S102: the pigment is infiltrated into the uv curable glue layer 20 through a thermal sublimation process.
Step S103: and forming a coating layer 30 on the ultraviolet curing glue layer 20 with the pigment.
In the method for manufacturing the housing according to the embodiment of the invention, first, the ultraviolet curing adhesive layer 20 is formed on the surface of the substrate 10 through the step S101. The appearance characteristics of the substrate 10 can be improved by disposing the uv curable adhesive layer 20, so that the appearance of the substrate 10 can exhibit various appearance manifestations, such as lines, textures or patterns, etc. which make the appearance of the substrate 10 have certain aesthetic features.
Then, the pigment is infiltrated into the uv curable glue layer 20 by using a thermal sublimation process through step S102. On the one hand, the pigment is permeated in the ultraviolet curing glue layer 20, so that the appearance of the substrate 10 can present a color-variable appearance form. On the other hand, in the thermal sublimation process, the pigment molecules have a larger moving range, so that the thermal sublimation process can enable the pigment to more uniformly penetrate into the ultraviolet curing glue layer 20, and noise is not generated on the printed pattern due to the fact that the pigment molecules can only be attached to the designated area in the printing process. When the surface of the shell needs to form a gradient color pattern, the thermal sublimation process can ensure that no obvious boundary exists between two adjacent colors, and the shell has a better gradient effect. Therefore, the shell preparation method provided by the embodiment of the invention can solve the problem of large noise of the surface pattern of the shell.
Finally, the step S103 of continuously forming the coating layer 30 on the uv curable adhesive layer 20 can improve the metallic texture of the housing appearance, and further improve the expressive force of the housing appearance.
In some optional embodiments, the step S101 further includes a step of pretreating the substrate 10, where the pretreatment of the substrate 10 includes, for example, grinding, cleaning, polishing, drying, etc. the substrate 10 is intended to remove impurities from the surface of the substrate 10, and to make parameters such as cleanliness and roughness of the surface of the substrate 10 meet requirements, so as to facilitate the adhesion of the uv-curable glue layer 20 to the surface of the substrate 10.
There are various implementation methods of step S101, and in some alternative embodiments, step S101 includes: coating ultraviolet curing glue on the surface of the base material 10, and curing the ultraviolet curing glue to form an ultraviolet curing glue layer 20. After the ultraviolet curing adhesive is cured to form the ultraviolet curing adhesive layer 20, lines, textures or patterns with certain aesthetic characteristics can be formed on the ultraviolet curing adhesive layer 20, and when the pigment penetrates into the ultraviolet curing adhesive layer 20, the pigment can present a pattern effect with certain aesthetic characteristics.
The uv curable adhesive may be made of any suitable material, and preferably, the uv curable adhesive at least comprises: 0-30 wt% of hexafunctional resin and 10-60 wt% of difunctional resin relative to the total weight of the ultraviolet curing adhesive.
In these alternative embodiments, the uv curable glue has a higher content of difunctional resin and a lower content of hexafunctional resin. After the ultraviolet curing adhesive is cured to form the ultraviolet curing adhesive layer 20, the crosslinking density of the resin in the ultraviolet curing adhesive layer 20 can be reduced, and the porosity of the ultraviolet curing adhesive layer 20 can be improved. The higher porosity is convenient for the pigment to permeate into the ultraviolet curing glue layer 20, further improves the adhesion effect of the pigment in the ultraviolet curing glue layer 20 and the noise reduction effect of the surface patterns of the ultraviolet curing glue layer 20, and improves the appearance expressive force of the shell.
When the ultraviolet curing adhesive is cured to form the ultraviolet curing adhesive layer 20, the curing energy is 400mj to 600mj, for example, the curing energy is 400mj, 450mj, 500mj, 550mj, 600mj, or the like. So that the uv curable adhesive layer 20 can be better attached to the surface of the substrate 10.
The thickness of the uv curable adhesive layer 20 is, for example, 5 μm to 20 μm. For example, the thickness of the ultraviolet curable adhesive layer 20 is 5 μm or more, 10 μm or more, or 20 μm or more. The ultraviolet curing glue layer 20 is prevented from being too thick, so that the shell is too thick, and the ultraviolet curing glue layer 20 is prevented from being too thin to influence the adhesion of the pigment.
There are various embodiments of step S102, and in some alternative embodiments, the pigment may be infiltrated into the uv-curable adhesive layer 20 by covering the uv-curable adhesive layer 20 with a sublimation film.
The color of the pigment on the sublimation film may, for example, exhibit a gradual change in color in one direction, or the color of the pigment on the sublimation film may exhibit a gradual change in color in a plurality of directions. Therefore, when the pigment on the thermal sublimation film is permeated into the ultraviolet curing glue layer 20, the color of the pigment on the substrate 10 can be gradually changed along one direction, or the color of the pigment on the substrate 10 can be gradually changed along a plurality of directions, so that the attractiveness of the shell and the diversity of the colors are improved.
In some optional embodiments, step S102 includes: covering a thermal sublimation membrane on the ultraviolet curing adhesive layer 20, carrying out thermal sublimation treatment, coating pigment on the thermal sublimation membrane, and removing the thermal sublimation membrane after the pigment permeates into the ultraviolet curing adhesive layer 20, wherein the thermal sublimation treatment temperature is 100-150 ℃, the thermal sublimation treatment pressure is 5-30 kg, and the thermal sublimation treatment time is 5-60 min.
In these alternative embodiments, the predetermined pattern may be first transferred to the thermal sublimation film, and then the pigment on the thermal sublimation film is transferred to the uv curable adhesive layer 20 through the thermal sublimation process. In the process of transferring the preset pattern to the thermal sublimation film, the preset pattern is not limited by the material of the base material 10, so that any preset pattern meeting the design requirement can be conveniently transferred to the thermal sublimation film. When the pattern on the thermal sublimation film is transferred to the case, the appearance expression of the case can be further improved. And in the process of transferring the pigment to the ultraviolet curing glue layer 20 through the thermal sublimation film, too high temperature is not needed, great influence on the performance of the base material 10 is avoided, and the structural strength of the shell can be ensured.
In step S102, there are various methods for determining that the pigment permeates from the sublimation film to the uv curable adhesive layer 20, for example, by observing the pigment residue on the sublimation film from the outside, when the pigment residue on the sublimation film is not large or when there is no pigment residue on the sublimation film, it is determined that the pigment on the sublimation film permeates to the uv curable adhesive layer 20, and the sublimation film is removed.
Or, in other alternative embodiments, whether the pigment permeates into the ultraviolet curing glue layer 20 is determined according to the time of the thermal sublimation treatment, for example, after 5min to 60min, it may be determined that part or all of the pigment on the thermal sublimation film has permeated into the ultraviolet curing glue layer 20, and the thermal sublimation film is removed at this time.
In step S103, the material of the coating is not limited, for example, the material of the coating is TiO2Or SiO2Or the coating material is TiO2And SiO2The mixed material of (1). Or the coating layer 30 comprises TiO2Layer and SiO2A composite layer of layers.
The thickness of the plating layer 30 is not limited, but it is preferable that the thickness of the plating layer 30 is 100nm to 200nm, for example, the thickness of the plating layer 30 is 100nm, 110nm, 120nm, 150nm, or 200nm, in order to ensure a good metal texture on the surface of the case. The time of the plating treatment is 1 to 6 hours so that the thickness of the plated layer 30 is 100 to 200 nm.
Referring to fig. 3 and 4 together, fig. 3 is a schematic flow chart illustrating a method for manufacturing a housing according to another first embodiment of the present invention, and fig. 4 is a partial cross-sectional view illustrating the housing manufactured by the method shown in fig. 3.
In further alternative embodiments, according to fig. 3 and 4, step S103 is followed by:
step S104: form silk screen printing layer 40 on coating film layer 30, silk screen printing layer 40 includes white bottom 41 and light shield layer 42 at least, and white bottom 41 is located between light shield layer 42 and coating film layer 30.
In these alternative embodiments, the screen printing layer 40 is formed on the coating layer 30, and the white bottom layer 41 is formed on the coating layer 30 by screen printing first, so that the interference of the subsequent screen printing color on the color in the uv-curing glue layer 20 can be prevented. The light-shielding layer 42 is continued to be silkscreened on the white background 41 to prevent the housing from transmitting light, which allows the parts inside the mobile phone to be viewed through the housing when the housing is applied to an electronic apparatus, for example, when the housing is applied to a mobile phone.
The thickness of each screen printing layer 40 can be set according to actual requirements. In some alternative embodiments, the white underlayer 41 has a thickness of 8 μm to 12 μm. For example, the thickness of the white underlayer 41 is 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, or the like. In order to ensure that the thickness of the white bottom layer 41 is 8-12 μm, the processing temperature in the silk-screen process of the white bottom layer 41 is 60-100 ℃, and the processing time in the silk-screen process of the white bottom layer 41 is 20-40 min.
In other alternative embodiments, the light-shielding layer 42 has a thickness of 8 μm to 12 μm. For example, the light-shielding layer 42 has a thickness of 8 μm, 9 μm, 10 μm, 11 μm, or 12 μm. In order to make the thickness of the light shielding layer 42 be 8 μm to 12 μm, the processing temperature in the silk-screen process of the white bottom layer 41 is 60 ℃ to 100 ℃, and the processing time in the silk-screen process of the white bottom layer 41 is 20min to 40 min.
In step S104, the number of layers of the white underlayer 41 and the light-shielding layer 42 is not limited. Due to the limitation of the silk-screen process, the thickness of each white bottom layer 41 is limited, and in order to ensure a good color crosstalk prevention effect, the number of layers of the white bottom layers 41 can be increased by increasing the silk-screen frequency, so that the total thickness of the white bottom layers 41 is increased, and the appearance of the shell is improved. For example, the white bottom layer 41 is three layers, and the light shielding layer 42 is continuously silk-screened after the three white bottom layers 41 are silk-screened on the film plating layer 30.
In some optional embodiments, the method of preparing the housing further comprises:
step S105: the other surface of the substrate 10 is coated with a hardening liquid to be hardened to form a hardened layer 50. Forming the hardened layer 50 on the other surface of the substrate 10 can improve the structural strength of the case and the scratch resistance of the case surface, thereby improving the service life of the case.
The thickness of the hardened layer 50 is, for example, 5 to 20 μm. For example, the thickness of the hardened layer 50 is 5 μm, 15 μm, 10 μm, or 20 μm. In order to make the thickness of the hardened layer 50 5 to 20 μm, the hardening temperature is 40 to 60 ℃, and the hardening time is 1 to 10 min.
It is understood that the step S105 may be implemented in various orders, for example, the step S105 may be implemented before the step S101, or the step S105 may be implemented after any one of the above steps S101, S102, S103 and S104. Preferably, step S105 is performed after step S104 to prevent the hardening liquid from affecting other film layers.
There are various choices for the material of the hardening liquid, and in some alternative embodiments, the hardening liquid includes, for example: the hardening liquid comprises, by weight, 40-50% of resin, 1-5% of an auxiliary agent, 5-15% of ethyl acetate which is a hexafunctional resin, 5-15% of butyl acetate, 10-20% of ethylene glycol butyl ether and 10-20% of propylene glycol methyl ether acetate, wherein the auxiliary agent is relative to the total weight of the hardening liquid. The hardening liquid adopting the formula can improve the structural strength of the hardening layer 50, and further improve the structural strength of the shell.
In further alternative embodiments, the method of making the housing further comprises:
step S106: the substrate 10 is trimmed. By tailoring the profile of the substrate 10, the shape of the substrate 10 can be tailored to meet design requirements. For example, the shape of the substrate 10 can be finished by a numerical control machine tool or a numerical control precision machining machine tool, and the machining efficiency can be improved and the finishing effect can be ensured by the numerical control machine tool or the numerical control precision machining machine tool.
The second embodiment of the invention also provides a shell, which is prepared by adopting the method of any one of the first embodiment. Because the shell of the embodiment of the invention is prepared by the method of the first embodiment, the surface pattern of the shell has better expression effect, and the problem of larger noise of the surface pattern of the shell is avoided.
The third embodiment of the present invention also provides an electronic apparatus including the housing of the second embodiment described above. The type of the electronic device is not limited, for example, the electronic device may be a mobile phone, a notebook computer, a tablet computer, a kiosk, an electronic book, or a learning machine.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. For example, the algorithms described in the specific embodiments may be modified without departing from the basic spirit of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (9)

1. A method for preparing a shell is characterized by comprising the following steps:
forming an ultraviolet curing glue layer on one surface of a substrate, comprising:
coating ultraviolet curing glue on the surface of the base material, and curing the ultraviolet curing glue to form an ultraviolet curing glue layer;
wherein, ultraviolet curing glues at least includes: 0-30 wt% of a hexafunctional resin and 10-60 wt% of a difunctional resin, relative to the total weight of the ultraviolet curing adhesive;
penetrating the pigment into the ultraviolet curing glue layer through a thermal sublimation treatment process;
and forming a coating layer on the ultraviolet curing adhesive layer with the pigment.
2. The method as claimed in claim 1, wherein the step of forming the uv-curable adhesive layer on one surface of the substrate has a curing energy of 400mj to 600 mj.
3. The method of claim 1, wherein the step of penetrating the pigment into the uv-cured bondline by a thermal sublimation process comprises:
covering a thermal sublimation membrane on the ultraviolet curing adhesive layer and carrying out thermal sublimation treatment, wherein the pigment is coated on the thermal sublimation membrane, and the thermal sublimation membrane is removed after the pigment permeates into the ultraviolet curing adhesive layer, wherein the thermal sublimation treatment temperature is 100-150 ℃, the thermal sublimation treatment pressure is 5-30 kg, and the thermal sublimation treatment time is 5-60 min.
4. The method as claimed in claim 1, wherein in the step of forming the uv-curable adhesive layer on the one surface of the substrate, the uv-curable adhesive layer has a thickness of 5 μm to 20 μm.
5. The method as claimed in claim 1, wherein the step of forming the coating layer on the uv curable adhesive layer having the pigment is performed for a period of time ranging from 1 hour to 6 hours, and the coating layer has a thickness ranging from 100nm to 200 nm.
6. The method of claim 1, wherein the step of forming a coating layer on the uv curable adhesive layer with the pigment further comprises:
forming a silk-screen layer on the coating layer, wherein the silk-screen layer at least comprises a white bottom layer and a light shielding layer, and the white bottom layer is positioned between the light shielding layer and the coating layer;
the thickness of the white bottom layer is 8-12 μm, the treatment temperature of the white bottom layer is 60-100 ℃, and the treatment time of the white bottom layer is 20-40 min; and/or the thickness of the light shielding layer is 8-12 μm, the treatment temperature of the light shielding layer is 60-100 ℃, and the treatment time of the light shielding layer is 20-40 min.
7. The method of claim 1, further comprising: and coating a hardening liquid on the other surface of the base material to carry out hardening treatment to form a hardened layer, wherein the hardening treatment temperature is 40-60 ℃, the hardening treatment time is 1-10 min, and the thickness of the hardened layer is 5-20 mu m.
8. A housing, characterized in that it is prepared by a method according to any one of claims 1-7.
9. An electronic apparatus characterized by comprising a housing according to claim 8.
CN201911248982.5A 2019-12-09 2019-12-09 Preparation method of shell, shell and electronic equipment Active CN111016485B (en)

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