CN108297468B - Processing method of ceramic appearance texture shell, shell and mobile terminal - Google Patents
Processing method of ceramic appearance texture shell, shell and mobile terminal Download PDFInfo
- Publication number
- CN108297468B CN108297468B CN201711455834.1A CN201711455834A CN108297468B CN 108297468 B CN108297468 B CN 108297468B CN 201711455834 A CN201711455834 A CN 201711455834A CN 108297468 B CN108297468 B CN 108297468B
- Authority
- CN
- China
- Prior art keywords
- plastic shell
- paint
- shell material
- coating
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/006—Producing casings, e.g. accumulator cases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a processing method of a ceramic appearance texture shell, a shell and a mobile terminal, and relates to the technical field of mobile terminals. The technical scheme adopted by the application is as follows: the processing method comprises the steps of carrying out injection molding treatment on a mold of a shell to obtain a plastic shell material, carrying out pretreatment on the surface of the plastic shell material, carrying out treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material, carrying out color paint spraying treatment on the surface of the plastic shell material, carrying out primer spraying treatment on the surface of the plastic shell material, carrying out optical-grade ceramic film coating treatment on the surface of the plastic shell material, wherein the film coating is a colored film coating, spraying middle paint on the surface of the plastic shell material, and spraying finish paint on the surface of the plastic shell material to obtain the shell with the texture of the ceramic appearance.
Description
Technical Field
The application relates to the technical field of mobile terminals, in particular to a processing method of a ceramic appearance texture shell, a shell and a mobile terminal.
Background
Along with the development of the technology, the appearance of the terminal changes faster and faster, the product with the ceramic appearance effect has greater and greater attraction to consumers, but the mobile phone shell is made of the ceramic material, so that the following problems exist: firstly, the production period is long, the sintering process is single, and the time is at least one week; secondly, the manufacturing cost is high, one set of ceramic battery cover needs at least more than hundreds of yuan, and the capacity is limited.
Disclosure of Invention
The technical problem mainly solved by the application is to provide a processing method of a ceramic appearance texture shell, a shell and a mobile terminal, which can shorten the production period, reduce the production cost and improve the productivity.
In order to solve the technical problem, the application adopts a technical scheme that: the processing method comprises the steps of carrying out injection molding treatment on a mold of a shell to obtain a plastic shell material, carrying out pretreatment on the surface of the plastic shell material, carrying out treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material, carrying out paint spraying treatment on the surface of the plastic shell material, carrying out primer spraying treatment on the surface of the plastic shell material, carrying out optical-grade ceramic film coating treatment on the surface of the plastic shell material, wherein the film coating is a colored film coating, spraying middle paint on the surface of the plastic shell material, and spraying finish paint on the surface of the plastic shell material to obtain the shell with the texture of the ceramic appearance.
In order to solve the above technical problem, another technical solution adopted by the present application is: a shell is provided, and the shell is manufactured by the processing method.
In order to solve the above technical problem, the present application adopts another technical solution: a mobile terminal is provided, which comprises the housing.
The beneficial effect of this application is: the method comprises the steps of performing injection molding treatment on a mold of a shell to obtain a plastic shell material, performing pretreatment on the surface of the plastic shell material, performing treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material, performing paint spraying treatment on the surface of the plastic shell material, performing primer spraying treatment on the surface of the plastic shell material, performing optical-grade ceramic coating treatment on the surface of the plastic shell material, wherein the coating is a colored coating, spraying middle paint on the surface of the plastic shell material, and spraying finish paint on the surface of the plastic shell material to obtain the shell with the appearance texture of ceramic, so that the production period of the shell can be shortened, the production cost can be reduced, and the productivity can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating an embodiment of a method for manufacturing a ceramic shell with a texture appearance according to the present disclosure;
FIG. 2 is a schematic structural diagram of a plastic shell material of an injection molded housing according to an embodiment of a method for manufacturing a ceramic shell with a texture;
FIG. 3 is a schematic structural diagram of an embodiment of a housing of a method for manufacturing a ceramic shell according to the present application;
FIG. 4 is a schematic flow chart illustrating a method for manufacturing a ceramic shell with a textured appearance according to another embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a plastic shell material of an injection molded housing according to another embodiment of the method for manufacturing a ceramic shell with a texture;
FIG. 6 is a schematic structural diagram of a housing according to another embodiment of the method for manufacturing a ceramic shell according to the present application;
FIG. 7 is a schematic structural diagram of a color paint layer and a coating layer in a conventional process;
fig. 8 is a schematic structural diagram of an embodiment of a mobile terminal according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, the terms "comprise" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic flow chart illustrating a method for processing a ceramic-appearance-texture housing according to an embodiment of the present disclosure. In this embodiment, the processing method of the ceramic appearance texture shell may include the following steps:
s11: and performing injection molding treatment on the mold of the shell.
The shell is the outermost structural component for supporting and connecting the motor, the transmission mechanism, the switch, the handle and the accessory device to form a complete electric tool entity. According to the material, the shell can be divided into a metal shell, a plastic shell and the like, the shell is generally applied to mechanical products, digital products and lamp products, and in the embodiment, the shell can be a mobile phone shell.
The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production.
Injection molding is a method for producing a molding of an industrial product, and the product is generally made by using rubber injection molding and plastic injection molding, and the material used for injection molding in the embodiment is not particularly limited.
In step S11, to obtain the outer shell, a suitable mold for the outer shell is selected according to the requirement, and then the outer shell is injection molded in the mold to obtain the plastic shell material of the outer shell, specifically as shown in fig. 2, fig. 2 is a schematic structural diagram of the plastic shell material of the outer shell injection molded in an embodiment of the method for processing the outer shell with ceramic appearance texture of the present application, and the plastic shell material 110 of the outer shell injection molded in step S11 is used for the following step S13 to perform the spraying treatment agent or the silver powder primer treatment.
S12: and (4) pretreating the surface of the plastic shell material.
Before the plastic shell 110 obtained by the injection molding in the step S11 is subjected to the treatment agent or the silver powder primer spraying treatment in the step S13, the surface of the plastic shell 110 needs to be pretreated in the step S12, that is, the dirt generated during the injection molding in the step S11 is removed, and the method for cleaning the dirt is selected according to the actual situation, such as oil removal, dust removal, drying, and the like, and then the step S13 is performed to subject the surface of the plastic shell 110 to the treatment agent or the silver powder primer spraying treatment.
S13: and (3) carrying out treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material.
In the step S13, the plastic shell 110 obtained in the step S11 is treated with a paint coating agent or silver powder primer, wherein the paint coating agent is used to improve the adhesion of paint and to cover the defects formed during injection molding, and then the paint coating agent or silver powder primer is treated to cure the paint coating agent or silver powder primer, wherein the paint coating agent or silver powder primer can be selected according to actual conditions, and is not limited herein.
Generally, the spraying on the surface of the plastic shell 110 only completes the first step of forming the film by the coating, and continues the process of changing into a solid continuous film, so as to complete the whole process of forming the film by the coating. This process of changing from a "wet film" to a "dry film" is commonly referred to as "drying" or "curing". This drying and curing process is central to the coating film-forming process. Coatings of different morphology and composition have their own film-forming mechanisms, which are determined by the nature of the film-forming material used in the coating. Generally we classify the film formation occurrence of coatings into two main categories:
the first is a non-inversion type, and generally refers to a physical film-forming method, in which a solid coating film is formed by increasing the viscosity of the coating film mainly by volatilization of a solvent or other dispersion medium in the coating film. For example: acrylic paint, chlorinated rubber paint, asphalt paint, vinyl paint, etc.
The second is conversion, which generally means that chemical reaction occurs during film forming, and the coating mainly depends on chemical reaction to form film. The film formation is the process of polymerization of film forming matter in paint after construction, which is called high polymer coating film, and it can be said to be a special high polymer synthesis mode, and it completely follows the high polymer synthesis reaction mechanism. For example: alkyd paints, epoxy paints, polyurethane paints, phenolic paints, etc., but most modern paints do not form a film in a single manner, but ultimately form a film in multiple manners.
Generally, after the plastic shell 110 obtained by injection molding the mold of the housing is molded in the step S11, a primer is sprayed on the plastic shell 110, but in this embodiment, the primer is not directly sprayed on the plastic shell 110, but the surface of the plastic shell 110 is sprayed with the paint or silver powder primer, and then the surface of the plastic shell 110 is sprayed with the paint in the step S14, and then the primer is sprayed on the surface of the plastic shell 110 in the step S15.
S14: and carrying out colored paint spraying treatment on the surface of the plastic shell material.
In step S14, the molded shell material 110 obtained in step S13 is painted, and then the painted paint is cured, wherein the paint may be a solid paint or a semi-transparent paint, and the paint is selected according to the actual situation, which is not limited herein.
S15: and (3) carrying out primer spraying treatment on the surface of the plastic shell material.
In step S15, the surface of the plastic shell 110 after the color paint spraying process is performed on the surface of the plastic shell 110 in step S14 is subjected to a primer spraying process, and then the sprayed primer is treated to cure the primer, wherein the primer can be selected according to the actual situation, which is not limited herein.
S16: and carrying out optical-grade ceramic coating treatment on the surface of the plastic shell material.
In step S16, the surface of the plastic shell 110 is subjected to primer spraying in step S15 and then subjected to optical-grade ceramic coating, wherein the coating is a colored coating, and the color of the coating can be selected according to actual conditions, which is not limited herein.
The coating film is formed by coating a very thin transparent film on the surface of the film, and aims to obtain proper reflected light and transmitted light, resist ultraviolet rays and inhibit low glare and ghost; the coating films with different colors also make the imaging color balance different.
Optical coatings are made from a combination of thin film layers that produce interference effects to improve transmission or reflection properties within the optical system. The performance of optical coatings depends on the number of layers, the thickness of the individual layers, and the different layer interface indices of refraction.
In step S16, the surface of the plastic shell 110 is subjected to optical-grade ceramic coating, the coating is a colored coating, the colored paint layer is placed under the optical coating layer on the surface of the plastic shell 110, the coating is a semi-permeable coating layer and can penetrate through the colored paint layer, and the coating layer and the colored paint layer are compounded to present a color appearance effect. After the optical-grade ceramic coating process is performed on the surface of the plastic shell 110 in step S16, the following step S17 is performed to spray paint on the surface of the plastic shell 110.
S17: and spraying the surface of the plastic shell material with a medium paint.
In step S17, the surface of the plastic shell 110 after the optical-grade ceramic coating process is performed on the surface of the plastic shell 110 in step S16 is subjected to a paint coating process, and then the paint coating process is performed to cure the paint coating process, wherein the paint coating process may be a transparent paint or an opaque paint, and the paint coating process is not limited herein.
After the intermediate paint is sprayed on the surface of the plastic shell 110 in step S17, the following step S18 is performed to spray the surface of the plastic shell 110 with the finish paint.
S18: and spraying finish paint on the surface of the plastic shell material 110.
In step S18, a surface paint spraying process is performed on the surface of the plastic shell 110 after the surface painting process is performed on the plastic shell 110 in step S17, and then the plastic shell 110 is processed to cure the surface paint, wherein the surface paint may be selected according to actual situations, and is not limited herein, so as to finally obtain a shell with ceramic appearance texture, specifically as shown in fig. 3, fig. 3 is a schematic structural diagram of the shell in an embodiment of a processing method of a shell with ceramic appearance texture of the present application, and the shell 100 includes a treating agent or a primer layer 120, a color paint layer 130, a primer layer 140, an optical-grade ceramic coating layer 150, an intermediate paint layer 160, and a surface paint layer 170, which are sequentially disposed on the plastic shell 110 of the injection-molded shell.
In this embodiment, a mold of a housing is subjected to injection molding to obtain a plastic shell material, the surface of the plastic shell material is subjected to pretreatment, the surface of the plastic shell material is subjected to treatment of treating agent or silver powder primer spraying, the surface of the plastic shell material is subjected to paint spraying, the surface of the plastic shell material is subjected to primer spraying, the surface of the plastic shell material is subjected to optical-grade ceramic coating, the coating is a colored coating, the surface of the plastic shell material is sprayed with a primer, and the surface of the plastic shell material is sprayed with a finish paint to obtain the housing with ceramic appearance texture, so that the production cycle of the housing can be shortened, the production cost can be reduced, and the productivity can be improved.
Referring to fig. 4, fig. 4 is a schematic flow chart illustrating a method for processing a ceramic-appearance-textured housing according to another embodiment of the present application. In this embodiment, the processing method of the ceramic appearance texture shell may include the following steps:
s21: and polishing the mould of the shell.
In this embodiment, before the injection molding process is performed on the mold of the housing, a polishing process is also performed to polish the front surface of the mold to a mirror surface level, so that the surface of the injection molded plastic shell material is also a mirror surface level. In step S21, hole position marking is performed on the mold, wherein the marked hole positions may be an earphone hole, a sound outlet hole, a camera hole, etc., so that CNC hole opening processing may be performed after the surface of the plastic shell is sprayed with the finish. In general, when the mold is processed in advance, the mold is directly opened, and at this time, a primary hole is formed in the plastic shell obtained by the injection molding process in step S22, which causes problems such as oil accumulation and edge fat at the hole position. In this embodiment, the hole site mark is carried out on the mould first, and the CNC trompil processing is carried out after the surface finish paint is sprayed on the surface of the plastic shell material, so that the problems of oil accumulation, fat edge and the like at the hole site can be effectively avoided.
After the polishing process is performed in this step S21, the injection molding process is performed in step S22 described below.
S22: and performing injection molding treatment on the mold of the shell.
In step S22, to obtain the shell, a proper shell mold needs to be selected according to the requirement, and then injection molding is performed on the shell mold to obtain the plastic shell material of the shell, generally, the injection molding machine has a 180T machine or a 220T machine, in this embodiment, the 180T machine is selected, the machine can also be adjusted according to the actual operation, and the mold temperature machine is used to keep the temperature during injection molding, and the mold temperature machine is an oil temperature machine.
The mold temperature controller is also called a temperature controller, and comprises temperature control in two aspects of heating and freezing, generally comprising a water temperature controller and an oil temperature controller.
The mold temperature controller consists of water tank, heating and cooling system, power transmission system, liquid level control system, temperature sensor, sprue and other parts. Typically, a pump in the power transmission system causes the hot fluid to arrive from a tank containing a built-in heater and cooler and then to return to the tank; a temperature sensor measuring a temperature of the thermal fluid and transmitting data to a controller of the control section; the controller adjusts the temperature of the thermal fluid, thereby indirectly adjusting the temperature. The mold temperature controller consists of water tank, heating and cooling system, power transmission system, liquid level control system, temperature sensor, sprue and other parts. Typically, a pump in the power transmission system causes the hot fluid to arrive from a tank containing a built-in heater and cooler and then to return to the tank; a temperature sensor measuring a temperature of the thermal fluid and transmitting data to a controller of the control section; the controller adjusts the temperature of the thermal fluid, thereby indirectly adjusting the temperature.
The plastic shell material of the housing injection-molded in step S22 is specifically shown in fig. 5, fig. 5 is a schematic structural diagram of the plastic shell material of the housing injection-molded in another embodiment of the method for processing the housing with ceramic appearance texture of the present application, and the plastic shell material 210 of the housing injection-molded in step S22 is used for the spraying treatment agent or the silver powder primer treatment in step S24 described below.
S23: and (4) pretreating the surface of the plastic shell material.
Before the treatment agent or the silver powder primer spraying treatment is performed in step S24, the plastic shell 210 obtained by the injection molding treatment in step S22 needs to be pretreated on the surface of the plastic shell 210 in step S23, i.e., dirt generated during the injection molding in step S22 is removed, and the method for cleaning the dirt is selected according to actual conditions, such as oil removal, dust removal, drying, etc., in this embodiment, the plastic shell 210 is subjected to electrostatic dust removal and oil removal treatment, and then the treatment agent or the silver powder primer spraying treatment is performed on the surface of the plastic shell 210 in step S24.
S24: and (3) carrying out treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material.
S25: and carrying out colored paint spraying treatment on the surface of the plastic shell material.
In step S24, the selection of the treating agent or the silver powder primer is influenced by the type of the colored paint in the following step S25, and therefore the following description will be made by putting together step S24 and step S25:
in step S24, the plastic shell 210 obtained in step S22 is treated with a paint coating agent or silver powder primer, wherein the paint coating agent is used to improve paint adhesion and to cover defects formed during injection molding, and then the paint coating agent or silver powder primer is treated to cure the paint coating agent or silver powder primer.
Specifically, the surface of the plastic shell 210 is treated with a PU-type treating agent or silver powder primer, which is selected according to the type of the colored paint in step S25, and the colored paint can be a solid colored paint or a semi-transparent colored paint, depending on the desired color. If the colored paint of the colored paint in the step S25 is a solid colored paint, performing a treating agent spraying treatment on the surface of the plastic shell 210 in a step S24; if the colored paint of the colored paint in the step S25 is a semi-transparent colored paint, the silver powder primer spraying process is performed on the surface of the plastic shell 210 in the step S24. Wherein the film thickness of the PU type treating agent or silver powder primer is 6 to 10 μm, such as 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μm, 10 μm, etc., baking the PU type treating agent or silver powder primer to increase the film strength, wherein the baking temperature is set to 80 degrees and the baking time is set to 15 min.
In step S25, the plastic shell 210 obtained in step S24 is painted with a color paint, and then the painted color paint is cured, wherein the color paint can be selected according to the actual situation. In this embodiment, the surface of the plastic shell 210 is thinly painted with a paint, wherein the paint has a film thickness of 5 to 8 μm, such as 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8 μm, etc., and the paint is baked in step S25 to increase the film strength and cure the film, wherein the baking temperature is set to 80 degrees, the baking time is set to 15min, and the baking temperature and the baking time can be adjusted according to the actual operation.
Generally, after the injection molding process is performed on the mold of the housing in step S22, the obtained plastic shell 210 is coated with the primer, but in this embodiment, the primer is not directly coated, but the primer is coated on the surface of the plastic shell 210 by spraying the paint or silver powder primer, and the primer is coated on the surface of the plastic shell 210 in step S26.
S26: the surface of the plastic shell 210 is subjected to primer spraying treatment.
In step S26, the surface of the plastic shell 210 after the paint spraying process in step S25 is subjected to a primer spraying process. Wherein the primer is a high leveling UV paint, that is, the high leveling UV paint is sprayed on the surface of the plastic shell 210 in the step S26, and the high leveling UV paint has the characteristic of high leveling property, and can ensure the surface to be flat before the treatment in the step S27 when sprayingCuring of the high leveling UV lacquer with a film thickness of 20-25 μm, for example 20 μm, 20.5 μm, 21 μm, 21.5 μm, 22 μm, 22.5 μm, 23 μm, 23.5 μm, 24 μm, 24.5 μm, 25 μm and the like, wherein the UV curing technique is a technique for obtaining a coating film which is also crosslinkable by rapid polymerization of a monomer/oligomer mixture, the rapid polymerization of the UV system being effected with a photoinitiator and a high-performance lamp, in this example with a curing energy of 500-3E.g. 500mj/cm3、550mj/cm3、600mj/cm3And the like, and other embodiments are similar to the above method and are not described in detail herein.
In step S26, after the surface of the plastic shell 210 sprayed with the paint in step S25 is subjected to primer spraying, the following step S27 is performed to perform optical-grade ceramic plating on the surface of the plastic shell 210.
S27: and carrying out optical-grade ceramic coating treatment on the surface of the plastic shell material.
In step S27, the plastic shell 210 surface after the primer coating in step S26 is subjected to optical-grade ceramic coating, the plastic shell 210 is placed in an optical coating machine for coating, the target material for coating is silicon, titanium, zirconium and their oxides, and the target material is used for coating on the surface of the plastic shell 210 in the optical coating machine to form a coating. The coating is a colored coating, the color of the coating is a required hue, and the film system structure and the film thickness of the coating are used for controlling the color of the coating and the reflectivity of the coating.
Specifically, the plastic shell 210 obtained in step S26 is cleaned and then placed in an optical coating machine for vacuum-pumping. In an optical coating machine, a substrate such as silicon, titanium, zirconium, and oxides thereof, which is an evaporation material, is placed in a crucible, a substrate such as metal, ceramic, plastic, etc., which is a workpiece to be coated, is placed in front of the crucible, and a coating material is evaporated using an electron gun. Specifically, a coating material is placed in a crucible, an evaporation source of an electron gun is made into a filament shape, a special control cabinet is adopted, a strong current and a high voltage are applied to the filament, the filament can generate heat until emitting electrons due to the fact that the filament is made of tungsten, then the electrons are gathered into a certain shape by a certain magnetic field and are pulled to the crucible, and therefore an electron beam is formed. Because the temperature of the electron beam is very high, any coating material can be melted, when the coating material is melted by the electron beam (some materials are directly sublimated), molecules (atoms or ions) of the material linearly move in vacuum, the deflection angle of the electron beam can be made to be 270 degrees, an evaporation source heated by the electron beam can also be provided with an e-line electron gun with an e-shaped running track or a c-type electron gun with an 180-degree deflection angle of the electron beam and a c-shaped running track, and when the electron beam meets a substrate, the electron beam is condensed and grows in such a way to form a thin film.
The pressure and time during the vacuum pumping are different according to the type of the coating machine, in this embodiment, the vacuum is pumped to a pressure of 6 x 10-3PA～9*10-4PA, e.g. 6 x 10-3PA、7*10-3PA、8*10-3PA、9*10-3PA、6*10-4PA、7*10-4PA、8*10-4PA、9*10-4PA, etc., and the vacuumizing time is 25-30 min, such as 25min, 26min, 27min, 28min, 29min, 30min, etc. The target material used in coating is silicon, titanium, zirconium and oxides thereof, the color of the coating is a required hue, such as blue or gun hue, wherein the hue is the texture appearance presented by color, and the hue of the coating color can be measured by a spectrum analyzer and controlled in a corresponding spectrum. The film system structure of the coating film is that silicon, titanium, zirconium and oxides thereof are coated alternately, the color and reflectivity of the coating can be controlled by the coating system and the film thickness, for example, the film system structure of the coating film is TiO2-SiO2-TiO2The thickness of the coating film is 140nm, the reflectivity of the light is controlled to be 40% by measuring with a spectrum analyzer, and other colors can be similarly coated by using corresponding targets, which is not limited herein.
In step S27, the surface of the plastic shell 210 is subjected to optical-grade ceramic coating, the coating is a colored coating, the colored paint layer is placed under the optical coating layer on the surface of the plastic shell 210, the coating layer is a semi-permeable film layer, so that the color of the colored paint layer can be penetrated, and the coating layer and the colored paint layer are compounded to present a color appearance effect. After the optical-grade ceramic coating process is performed on the surface of the plastic shell 210 in step S27, the following step S28 is performed to continuously spray the paint on the surface of the plastic shell 210.
S28: and spraying the surface of the plastic shell material with a medium paint.
In step S28, the surface of the plastic shell 210 after the optical-grade ceramic coating process is painted with a paint, and then the plastic shell 210 is processed to cure the paint. Wherein the intermediate paint is a permeable PU paint, namely the intermediate paint is a transparent paint, and the film thickness of the permeable PU paint is 6-7 μm, such as 6 μm, 6.5 μm, 7 μm and the like. When the medium-temperature paint is treated, the permeable PU paint needs to be baked, wherein the baking temperature is 80 ℃, and the baking time is set to be 15 min. In step S28, the permeable PU paint is diluted with a diluent to adjust the viscosity of the paint coating, the diluent being a weak corrosive diluent. The medium paint can be selected according to actual conditions, and is not limited herein.
After the intermediate paint is sprayed on the surface of the plastic shell 210 in step S28, the following step S29 is performed to spray the finish paint on the surface of the plastic shell 210.
S29: and spraying finish paint on the surface of the plastic shell material.
In step S29, a finish paint spraying process is performed on the surface of the plastic shell 210 after the painting process in step S28, and the finish paint is a UV paint with high light and permeability, so that the surface of the plastic shell 210 has scratch-resistant and wear-resistant effects. The UV paint with full high light and permeability has a thickness of 20-25 μm, such as 20 μm, 20.5 μm, 21 μm, 21.5 μm, 22 μm, 22.5 μm, 23 μm, 23.5 μm, 24 μm, 24.5 μm, 25 μm, etc., and the plastic shell 210 is treated to cure the topcoat. Firstly baking the UV paint, wherein the baking temperature is 80 ℃, the baking time is set to be 6-7 min, and then curing the UV paint, wherein the curing energy is 800-1000 mj/cm3E.g. 800mj/cm3、850mj/cm3、900mj/cm3、950mj/cm3、1000mj/cm3And the like, to obtain a housing with a ceramic appearance texture, as shown in fig. 6, fig. 6 is a housing with a ceramic appearance texture of the present applicationIn another embodiment of the manufacturing method, the housing 200 includes a primer layer 220 of treating agent or silver powder, a color paint layer 230, a primer layer 240, an optical ceramic coating layer 250, a middle paint layer 260, and a finish paint layer 270 sequentially disposed on a plastic shell 210 of the injection molded housing.
Generally, In the prior art, such as a Vacuum plating process, a silver metallic color is plated first, a reflective layer of a metallic substrate is a solid color layer, if a color paint is sprayed before plating, the color paint cannot penetrate through an NCVM (Non-Conductive Vacuum plating) plating layer, a target material of the color paint is selected from a metallic material In filament, and In can freely move In Vacuum after being heated and gasified In a Vacuum environment and then is deposited on the surface of a plastic shell material to give a metallic texture to the surface of the plastic shell material. The vacuum plating realizes color by spraying a color paint layer after coating, specifically as shown in fig. 7, fig. 7 is a schematic structural diagram of the color paint layer and the coating layer in the conventional process, and the color paint layer 310 is disposed on the coating layer 320. This method has the following problems: the light color paint layer has too high reflectivity and dazzling reflected light; the dark color paint layer has high proportion of color paste, larger attenuation proportion of the reflectivity of a metal coating, weak metal feeling, and the problem of common oil stains in the paint spraying, which can not be solved.
In this embodiment, the color paint layer is disposed under the Optical coating layer, the coating layer is a semi-permeable film layer, the color paint layer can penetrate through the color paint layer, the coating layer and the color paint layer are compounded to present a color appearance effect, the reflectivity and the passing rate can be adjusted, meanwhile, the coating layer after the coating of the OPVM (Optical Vacuum metal coating) is completed is a permeable coating layer, the coating machine can select a magnetron sputtering coating machine or an electronic gun type Optical coating machine, the target material selects silicon, titanium, zirconium and oxides thereof to be coated alternately, the reflectivity can be improved, the mirror surface feeling can be increased, and the oil stain problem can be effectively improved. By using the method in the embodiment, color effects which cannot be achieved by the traditional process, such as ceramic white, pearl luster, magical color, highlight and the like can be achieved.
For the above steps S21 to S29, the following description will be made taking blue and gold as examples:
taking blue as an example, firstly polishing a mold of a shell, then performing injection molding treatment on the mold of the shell to obtain a plastic shell material of the shell, performing pretreatment on the plastic shell material, namely performing electrostatic dust removal and oil removal treatment, spraying 6-10 mu m of treating agent on the surface of the plastic shell material subjected to injection molding, spraying 5-8 mu m of blue paint which is solid paint, baking to completely cure a paint layer, spraying high-leveling transparent UV (ultraviolet) primer to ensure that a coating on the surface of the plastic shell material before coating treatment is flat and good, and then performing optical-grade ceramic coating treatment on the surface of the plastic shell material, namely coating a blue-phase reflective semi-permeable membrane, wherein the film system structure of the coating is TiO2-SiO2-TiO2The blue hue can be measured by a spectrum analyzer, the reflectivity of the blue coating with the wavelength of 420nm is controlled to be about 45%, transparent middle paint and transparent finish paint are sprayed after the coating is finished, and curing treatment is correspondingly carried out, so that the blue shell with the ceramic appearance texture can be obtained, and the structure of the blue shell can refer to fig. 6.
Taking golden color as an example, firstly polishing a mold of a shell, then performing injection molding on the mold of the shell to obtain a plastic shell material of the shell, performing pretreatment on the plastic shell material, namely performing electrostatic dust removal and oil removal treatment, spraying 6-10 mu m silver powder primer on the surface of the plastic shell material subjected to injection molding, spraying 5-8 mu m golden paint which is semi-transparent paint, baking to completely cure a paint layer, spraying high-leveling transparent UV (ultraviolet) primer to ensure that the coating on the surface of the plastic shell material before coating keeps flat and good in leveling, performing optical-grade ceramic coating treatment on the surface of the plastic shell material, coating a reflective semi-transparent film with a bluish violet hue, measuring the bluish violet hue by a spectrum analyzer, controlling the reflectivity of the bluish violet coating with a wavelength of 420nm to be about 35%, and spraying transparent medium paint after coating is completed, The transparent finish paint is cured correspondingly to obtain a golden shell with the texture of ceramic appearance, and the structure of the golden shell can refer to fig. 6.
S30: and carrying out carbon dioxide laser etching treatment on the side edge area of the shell.
Optionally, the side region of the housing is carbon dioxide laser engraved.
Specifically, after the surface of the plastic shell is coated with the finish paint in step S28 to obtain the housing 200, the housing 200 is processed in step S30, and then the side area of the housing 200 is processed by laser etching with carbon dioxide, so that the housing 200 with the texture of ceramic appearance can achieve the dual-gloss effect, and the housing structure obtained in step S29 is the same as the housing shown in fig. 6.
It should be noted that, after each step is finished, corresponding cleaning processing may be performed according to actual conditions, and the processing manner is selected according to actual conditions, which is not described herein again.
In this embodiment, a mold of a housing is polished to a mirror surface level, the mold of the housing is subjected to injection molding, an oil heating machine is used for heat preservation/cooling during injection molding to obtain a plastic shell material of the housing, then the plastic shell material is subjected to electrostatic dust removal and oil removal, then a treating agent or silver powder primer is sprayed on the surface of the plastic shell material, a colored paint spraying treatment is performed on the surface of the plastic shell material, a treating agent is sprayed when the colored paint is solid colored paint, a silver powder primer is sprayed when the colored paint is semi-transparent paint, then a high leveling UV primer spraying treatment is performed on the surface of the plastic shell material, then an optical level ceramic colored coating treatment is performed on the surface of the plastic shell material in an optical coating machine, finally a transparent middle paint is sprayed on the surface of the plastic shell material, and a UV paint with full high light and high permeability is used as a top coat, the shell with the ceramic appearance texture can be obtained, and carbon dioxide laser etching treatment can be performed on the side edge area of the shell sprayed with the finish paint, so that the shell with the ceramic appearance texture can achieve a dual-gloss effect, the production period of the shell can be shortened, the production cost can be reduced, and the productivity can be improved.
The present application provides another embodiment of a housing made by the above-described method of processing. The structure of the housing manufactured by the above-described processing method in this embodiment is similar to that of the housing shown in fig. 3. A specific method for processing a housing can refer to fig. 1, which is not described herein.
The embodiment can shorten the production period of the shell, reduce the production cost and improve the productivity.
The application provides a mobile terminal which comprises a shell manufactured by the method. Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a mobile terminal according to the present application, where the mobile terminal 400 includes a housing 410, a structure of the housing 410 is similar to that of the housing shown in fig. 3, and a processing method of the housing 410 may specifically refer to fig. 1, which is not described herein again.
The mobile terminal provided by the embodiment of the application comprises an intelligent mobile terminal, a tablet computer, intelligent wearable equipment, a digital audio and video player, an electronic reader, a handheld game machine and other electronic equipment.
The embodiment can shorten the production period of the mobile terminal shell, reduce the production cost and improve the productivity.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (9)
1. A processing method of a ceramic appearance texture shell is characterized by comprising the following steps:
performing injection molding treatment on the mold of the shell to obtain a plastic shell material;
pretreating the surface of the plastic shell material;
carrying out treatment agent or silver powder primer spraying treatment on the surface of the plastic shell material;
carrying out colored paint spraying treatment on the surface of the plastic shell material;
performing primer spraying treatment on the surface of the plastic shell material, wherein the primer is a high-leveling transparent UV primer;
carrying out optical ceramic coating treatment on the surface of the plastic shell material, wherein the coating is a colored coating, and a coating formed by the coating is a semi-permeable film layer;
spraying transparent intermediate paint on the surface of the plastic shell material;
spraying transparent finish paint on the surface of the plastic shell material to obtain a shell with ceramic appearance texture;
the optical ceramic coating treatment is carried out on the surface of the plastic shell material, and the coating is a colored coating and comprises the following steps:
putting the plastic shell material into an optical coating machine for coating;
the target material for coating is silicon, titanium, zirconium and oxides thereof, and is used for coating on the surface of the plastic shell material by the optical coating machine to form the coating;
the film system structure of the coating film is formed by alternately coating silicon, titanium, zirconium and oxides thereof, and the film thickness of the coating film can enable the coating film to generate an interference effect so as to control the color of the coating film and the reflectivity of the coating film, so that the color of the coating film is compounded with the color of the colored paint, and the color appearance effect is presented.
2. The process of claim 1, wherein prior to subjecting the mold for the housing to the injection molding process, the process further comprises:
polishing the mold to polish the front surface of the mold to a mirror surface level;
carrying out hole position marking treatment on the mold, so as to carry out CNC (computerized numerical control) hole opening treatment after spraying finish paint on the surface of the plastic shell material;
use the mould of shell carries out injection moulding to obtain plastic shell material, include:
and (3) insulating and cooling the plastic shell material by using a mold temperature controller, wherein the mold temperature controller is an oil temperature controller.
3. The processing method as claimed in claim 2, wherein the pre-treating the surface of the plastic shell material comprises:
carrying out electrostatic dust removal and oil removal treatment on the plastic shell material;
the step of spraying the treating agent or the silver powder primer on the surface of the plastic shell material comprises the following steps:
carrying out PU type treating agent or silver powder primer spraying treatment on the surface of the plastic shell material, wherein the film thickness of the PU type treating agent or the silver powder primer is 6-10 mu m;
baking the PU type treating agent or the silver powder primer to increase the strength of the film layer, wherein the baking temperature is set to be 80 ℃, and the baking time is set to be 15 min.
4. The processing method as claimed in claim 3, wherein the painting process for the surface of the plastic shell material comprises:
performing thin painting treatment on the surface of the plastic shell material, wherein the thickness of the paint film is 5-8 μm;
baking the colored paint to increase the strength of the film layer, wherein the baking temperature is set to be 80 ℃, and the baking time is set to be 15 min;
if the colored paint is a real colored paint, performing the treatment agent spraying treatment on the surface of the plastic shell material;
and if the colored paint is semi-transparent colored paint, performing the silver powder primer spraying treatment on the surface of the plastic shell material.
5. The processing method as claimed in claim 4, wherein the primer spraying treatment of the surface of the plastic shell material comprises:
spraying the high leveling transparent UV primer on the surface of the plastic shell material, wherein the film thickness of the high leveling transparent UV primer is 20-25 mu m;
curing the high leveling transparent UV primer, wherein the curing energy is 500-3。
6. The process of claim 1, wherein said spraying a clear midcoat on the surface of the plastic shell comprises:
the transparent middle paint is permeable PU paint, and the film thickness of the permeable PU paint is 6-7 mu m;
baking the permeable PU paint, wherein the baking temperature is set to be 80 ℃, and the baking time is set to be 15 min;
diluting the permeable PU paint by using a diluent to adjust the viscosity of the transparent intermediate paint coating, wherein the diluent is a weak corrosive diluent;
the step of spraying the transparent finish paint on the surface of the plastic shell material comprises the following steps:
the transparent finish paint is UV paint with full high light and permeability, and the thickness of the UV paint is 20-25 mu m;
baking the UV paint, wherein the baking temperature is 80 ℃, and the baking time is set to be 6-7 min;
curing the UV paint, wherein the curing energy is 800-1000 mj/cm3。
7. The process of claim 1, wherein after spraying a topcoat on the surface of the plastic shell, the process further comprises:
and carrying out carbon dioxide laser etching treatment on the side edge area of the plastic shell material.
8. A housing, characterized in that it is manufactured by the process according to any one of claims 1 to 7.
9. A mobile terminal, characterized in that it comprises a housing according to claim 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455834.1A CN108297468B (en) | 2017-12-27 | 2017-12-27 | Processing method of ceramic appearance texture shell, shell and mobile terminal |
| PCT/CN2018/123498 WO2019128990A1 (en) | 2017-12-27 | 2018-12-25 | Method for processing shell with ceramic texture, shell, and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455834.1A CN108297468B (en) | 2017-12-27 | 2017-12-27 | Processing method of ceramic appearance texture shell, shell and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108297468A CN108297468A (en) | 2018-07-20 |
| CN108297468B true CN108297468B (en) | 2021-02-26 |
Family
ID=62867616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711455834.1A Active CN108297468B (en) | 2017-12-27 | 2017-12-27 | Processing method of ceramic appearance texture shell, shell and mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108297468B (en) |
| WO (1) | WO2019128990A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108297468B (en) * | 2017-12-27 | 2021-02-26 | 惠州Tcl移动通信有限公司 | Processing method of ceramic appearance texture shell, shell and mobile terminal |
| CN109280888A (en) * | 2018-09-06 | 2019-01-29 | 维沃移动通信有限公司 | Shell preparation method and shell |
| CN110918422A (en) * | 2018-09-19 | 2020-03-27 | 华硕电脑股份有限公司 | Surface processing method of shell |
| CN109201436A (en) * | 2018-10-17 | 2019-01-15 | 东莞市铱诺真空镀膜有限公司 | The imitative ceramic appearance spraying method of height |
| CN110933887B (en) * | 2019-11-29 | 2021-09-03 | 惠州Tcl移动通信有限公司 | Shell machining method, shell and mobile terminal |
| CN113498285B (en) * | 2020-04-08 | 2023-02-17 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
| CN111660586A (en) * | 2020-06-06 | 2020-09-15 | 东莞市映宁轩电子科技有限公司 | Method for manufacturing rear cover of mobile phone and rear cover of mobile phone |
| CN112911031A (en) * | 2021-01-16 | 2021-06-04 | 董云华 | Manufacturing process of colored paint electroplating combined mobile phone shell |
| CN114669458A (en) * | 2022-03-28 | 2022-06-28 | 东莞市美尚美电子科技有限公司 | Optical coating process |
| CN117082793B (en) * | 2023-10-11 | 2024-03-12 | 荣耀终端有限公司 | Shell, manufacturing method thereof and electronic equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1000731A1 (en) * | 1998-11-12 | 2000-05-17 | Bush Industries, Inc. | Apparatus for applying a decoration to a workpiece |
| US7887904B2 (en) * | 2007-03-09 | 2011-02-15 | Wki Holding Company, Inc. | Method and system for printing electrostatically or electrographically generated images to contoured surfaces of ceramic and glass items such as dishware |
| TWI491507B (en) * | 2011-01-25 | 2015-07-11 | Fih Hong Kong Ltd | Device housing and method for making the device housing |
| CN103147045B (en) * | 2013-03-27 | 2016-03-02 | 东莞劲胜精密组件股份有限公司 | A kind of metalized surface decoration treatment process of plastic casing |
| CN104607376A (en) * | 2014-10-14 | 2015-05-13 | 陈来运 | Product surface double-color glaze and matte treatment method |
| CN104582360A (en) * | 2014-12-03 | 2015-04-29 | 惠州Tcl移动通信有限公司 | Method for realizing two kinds of luster, plastic casing and terminal |
| CN105598018A (en) * | 2016-01-12 | 2016-05-25 | 青岛海信移动通信技术股份有限公司 | Machining method for achieving metal texture of plastic shell with grain appearance and shell |
| CN106622917A (en) * | 2016-11-30 | 2017-05-10 | 依偎科技（南昌）有限公司 | Substrate surface processing method, shell and terminal |
| CN107148176A (en) * | 2017-05-03 | 2017-09-08 | 广东欧珀移动通信有限公司 | Mobile terminal, mobile terminal shell and preparation method thereof |
| CN107999361A (en) * | 2017-12-02 | 2018-05-08 | 陈来运 | A kind of method for paint spraying of plastic casing |
| CN108297468B (en) * | 2017-12-27 | 2021-02-26 | 惠州Tcl移动通信有限公司 | Processing method of ceramic appearance texture shell, shell and mobile terminal |
| CN108583130B (en) * | 2018-04-12 | 2020-06-05 | Oppo广东移动通信有限公司 | Electronic device, shell thereof and manufacturing method of shell |
-
2017
- 2017-12-27 CN CN201711455834.1A patent/CN108297468B/en active Active
-
2018
- 2018-12-25 WO PCT/CN2018/123498 patent/WO2019128990A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN108297468A (en) | 2018-07-20 |
| WO2019128990A1 (en) | 2019-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108297468B (en) | Processing method of ceramic appearance texture shell, shell and mobile terminal | |
| CN106393557B (en) | The plastics shells that the production method and this method of a kind of plastics shells obtain | |
| JP7210869B2 (en) | Electronic product case manufacturing method | |
| CN106079227B (en) | The preparation method and electronic equipment of electronic equipment plastic shell | |
| CN101637986B (en) | Color material | |
| CN109624465A (en) | Preparation method, terminal shell and the mobile terminal of terminal shell | |
| CN108367310A (en) | Manufacture the method for coated substrate, coated substrate and application thereof and the system for manufacturing coated substrate | |
| CN107309138A (en) | A kind of two-sided coating process of mobile phone shell | |
| CN108531854B (en) | Aging-resistant period variable reaction black chromium coating and forming method | |
| CN100529154C (en) | Plastic surface vacuum plating process | |
| CN105316624A (en) | Surface plating technique for polymer material product | |
| WO2012130059A1 (en) | Shell with brightness gradient effect and method of preparing the same | |
| CN102877024B (en) | Pearl-like film coating method | |
| CN107321582A (en) | Surface structure part of a kind of terminal and preparation method thereof and mobile terminal | |
| US20130171424A1 (en) | Housing and method for making the same | |
| CN105506567A (en) | Preparation method for aluminum-based transition coating of die-casting aluminum alloy shell | |
| CN106893978B (en) | A kind of technique that plastic surface imitates metal-back processing | |
| CN210683612U (en) | System for preparing composite cover plate | |
| CN105818315B (en) | A kind of film plating process of plastic rubber member surface, plastic parts and electronic equipment | |
| CN101994084A (en) | Color electroplating structure and manufacturing method thereof | |
| EP3315265B1 (en) | Brush handle and method for manufacturing same | |
| CN113365448B (en) | Manufacturing method of shell assembly, shell assembly and electronic equipment | |
| CN103173721A (en) | Coating method for discontinuous mirror surface white film | |
| CN107159539A (en) | A kind of ceramic anti-fingerprint coating and preparation method thereof, mobile terminal | |
| CN109280888A (en) | Shell preparation method and shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |