CN115178447A - Shell, shell surface treatment method and electronic equipment - Google Patents
Shell, shell surface treatment method and electronic equipment Download PDFInfo
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- CN115178447A CN115178447A CN202210695926.1A CN202210695926A CN115178447A CN 115178447 A CN115178447 A CN 115178447A CN 202210695926 A CN202210695926 A CN 202210695926A CN 115178447 A CN115178447 A CN 115178447A
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- base material
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- ink layer
- mirror
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004381 surface treatment Methods 0.000 title claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 119
- 229920005989 resin Polymers 0.000 claims abstract description 119
- 239000000463 material Substances 0.000 claims abstract description 85
- 238000005553 drilling Methods 0.000 claims abstract description 72
- 239000011248 coating agent Substances 0.000 claims abstract description 67
- 238000000576 coating method Methods 0.000 claims abstract description 67
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 238000007639 printing Methods 0.000 claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 95
- 238000007747 plating Methods 0.000 claims description 14
- 238000001771 vacuum deposition Methods 0.000 claims description 14
- 238000004049 embossing Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000011257 shell material Substances 0.000 description 30
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- 229910052709 silver Inorganic materials 0.000 description 15
- 239000004332 silver Substances 0.000 description 15
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 15
- 210000004209 hair Anatomy 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 13
- 239000005020 polyethylene terephthalate Substances 0.000 description 13
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- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
-
- 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
- H05K5/0217—Mechanical details of casings
Abstract
The invention discloses a shell, a shell surface treatment method and electronic equipment, wherein the method comprises the following steps: drilling and cutting a chamfer on a side line at the top of the resin base material to form a drilling surface; printing mirror ink on the peripheral edge of the bottom surface of the resin base material to form a mirror ink layer, wherein the printing width of the mirror ink is equal to the projection width of the drilling section on the bottom surface of the resin base material; drilling the section and the mirror ink layer to form a high-brightness edge on the side wall of the resin substrate; printing color ink on the bottom surface of the resin substrate to form a color ink layer, wherein the printing thickness of the color ink is equal to that of the mirror ink; arranging metal electroplated layers on the bottom surfaces of the colored ink layer and the mirror ink layer; printing an ultraviolet curing coating on the surface of the resin substrate and performing precuring to form an ultraviolet coating, and stamping the surface of the ultraviolet coating to form concave-convex textures. The surface of the shell is treated by the process, so that the shell has excellent appearance effect and texture similar to a metal aluminum anode; on the other hand, the environmental pollution is greatly reduced.
Description
Technical Field
The invention relates to the technical field of surface treatment, in particular to a shell, a shell surface treatment method and electronic equipment.
Background
In the field of electronic equipment such as notebook computers, mobile phones, tablet computers and the like, the aluminum anode process is one of the most widely applied electronic equipment shell treatment technologies due to good metal texture. However, the aluminum anode cannot be applied to a relatively low-end product due to complicated processes and high material cost, and the aluminum anode process has serious environmental pollution. With the continuous progress of the concept of green development, a method for treating the surface of a housing with low cost and environmental friendliness is urgently needed, so that the housing of the electronic device has a metal texture.
Disclosure of Invention
The invention provides a shell, a shell surface treatment method and electronic equipment, which at least solve the technical problems in the prior art.
In one aspect, the present invention provides a method for surface treatment of a casing, the method comprising:
drilling and cutting a chamfer on a side line at the top of the resin base material to form a drilling surface;
mirror ink is printed on the periphery of the bottom surface of the resin base material to form a mirror ink layer, and the printing width of the mirror ink is equal to the projection width of the drilling section on the bottom surface of the resin base material; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate;
printing colored ink imitating the texture of an anode on the bottom surface of the resin substrate to form a colored ink layer, wherein the printing thickness of the colored ink is equal to that of the mirror ink;
arranging metal electroplated layers on the bottom surfaces of the colored ink layer and the mirror surface ink layer;
printing an ultraviolet curing coating on the surface of the resin substrate, pre-curing to form an ultraviolet coating, and stamping the surface of the ultraviolet coating to form concave-convex textures.
In one embodiment, the resin substrate is a PET (polyethylene terephthalate) material with a gloss of greater than 90 degrees, and the thickness of the resin substrate is 0.5-1.2mm.
In one embodiment, the edge line of the top of the resin substrate is chamfered to form a chamfer, and the method comprises the following steps:
and (3) performing edge drilling and chamfering on the top of the resin base material at the drilling and cutting speed of 28000-36000 rpm to obtain a drilling and cutting surface, wherein the projection width of the drilling and cutting surface on the side surface of the resin base material is 0.3-0.5mm.
In one embodiment, the projection width of the drilling section on the bottom surface of the resin substrate is 0.3-0.6mm.
In one embodiment, the disposing a metal plating layer on the bottom surfaces of the colored ink layer and the mirror ink layer includes:
placing the aluminum material in a vacuum coating machine at a speed of 1 × 10 -4 -5×10 -4 Vacuum deposition was performed by Torr (Torr, 1Torr = 1mmHg).
In one embodiment, the thickness of the colored ink layer is 7-10 μm, and the thickness of the metal plating layer is 0.1-0.2 μm.
In an embodiment, the embossing on the surface of the uv coating includes:
preparing a concave-convex texture structure on the metal master plate;
and transferring the structure of the concave-convex texture on the metal master mask onto an ultraviolet coating to form the concave-convex texture on the ultraviolet coating.
In one embodiment, after the concave-convex texture is formed on the ultraviolet coating layer, the glossiness of the ultraviolet coating layer is 10-20 degrees.
In another aspect, the present invention provides a housing, which is prepared by the above-mentioned housing surface treatment method, and comprises:
the resin base material is used for drilling and cutting a chamfer angle on a side line at the top of the resin base material to form a drilling surface;
the mirror surface ink layer is positioned on the peripheral edge of the bottom surface of the resin base material, and the width of the mirror surface ink layer is equal to the projection width of the drilling section on the bottom surface of the resin base material;
the colored ink layer is arranged on the bottom surface of the resin base material;
the metal electroplated layer is arranged on the bottom surface of the mirror ink layer; and
the ultraviolet coating is arranged on the surface of the resin base material, and the surface of the ultraviolet coating is provided with concave-convex textures.
The invention further provides an electronic device which is provided with the shell.
In the scheme of the invention, the sideline at the top of the resin substrate is drilled and cut, then the mirror ink layer, the colored ink layer and the electroplated metal plating layer are printed on the bottom surface of the resin substrate in a layered mode, finally the ultraviolet coating is printed on the surface of the resin substrate, and the surface of the ultraviolet coating is provided with the concave-convex texture. The surface of the shell is treated by the process to replace an aluminum metal anode process, so that the shell has excellent appearance effect and texture similar to a metal aluminum anode; on the other hand, the surface treatment method greatly reduces the environmental pollution.
Drawings
Fig. 1 is a schematic diagram illustrating an exploded structure of a housing according to an embodiment of the present invention;
FIG. 2 illustrates a cross-sectional view of a housing provided by an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a method for treating the surface of a housing according to an embodiment of the present invention;
fig. 4 shows a schematic diagram of a sample case provided by an embodiment of the invention.
Description of reference numerals: 1. a resin base material; 11. drilling a tangent plane; 2. a mirror surface ink layer; 3. a colored ink layer; 4. a metal plating layer; 5. and (4) ultraviolet coating.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
As shown in fig. 1-2, the present invention provides a schematic structural diagram of a housing, which includes, from top to bottom:
the ink comprises a resin base material 1, a mirror surface ink layer 2, a colored ink layer 3 and a metal electroplated layer 4, wherein an ultraviolet coating 5 is further arranged on the surface of the resin base material 1.
The resin substrate 1 is transparent PET (polyethylene terephthalate), and the thickness of the resin substrate 1 is 0.5-1.2mm. Drilling and cutting a chamfer at the side line position of the top of the resin substrate 1to form a drilling surface 11; the projection width T1 of the drilling section 11 on the bottom surface of the resin substrate 1 is 0.3-0.6mm, and the projection width T3 of the drilling section 11 on the side surface of the resin substrate 1 is 0.3-0.5mm.
Mirror surface printing ink layer 2 is located the edge all around of 1 bottom surface of resin substrate, and the width T2 of mirror surface printing ink layer 2 equals with the projection width T1 of brill tangent plane 11 in 1 bottom surface of resin substrate.
The colored ink layer 3 is uniformly printed on the bottom surface of the resin base material 1, the total area of the colored ink layer 3 and the mirror surface ink layer 2 is equal to the total area of the bottom surface of the resin base material 1, and the colored ink layer 3 and the mirror surface ink layer 2 are not overlapped; the thickness of the colored ink layer 3 is equal to that of the mirror ink layer 2, and the thickness is 7-10 μm.
The metal plating layer 4 is uniformly plated on the bottom surface of the mirror ink layer 2, and the thickness of the metal plating layer 4 is 0.1-0.2 μm.
The ultraviolet coating 5 is printed on the surface of the resin base material 1, the thickness of the ultraviolet coating 5 is 15-35 mu m, in order to improve the surface texture of the shell, concave-convex textures are stamped on the surface of the ultraviolet coating 5, and the cross section of the stamped concave-convex structure in the stamping direction is rectangular or triangular.
Fig. 3 is a schematic flow chart of a shell surface treatment method provided by an embodiment of the present invention, which includes:
step S1, drilling and cutting a chamfer on a side line at the top of a resin base material to form a drilling surface;
the casing of the present invention is mainly applied to a housing of an electronic device such as a consumer electronics product and an information technology product or a housing of an internal component of the electronic device, for example, a housing of a notebook computer, a housing of a keyboard, a housing of a mobile phone rear cover, a housing of a stylus pen body or a housing of a mouse, and the present invention is not limited thereto. The shell material is resin, and the resin base material is lower in cost compared with an aluminum shell, so that the production cost is reduced. And (3) drilling and cutting a chamfer on the side line at the top of the resin base material to form a drilling surface, wherein the drilling surface can bring the texture of a metal bright edge.
S2, printing mirror ink on the periphery of the bottom surface of the resin base material to form a mirror ink layer, wherein the printing width of the mirror ink is equal to the projection width of the drilling section on the bottom surface of the resin base material; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate;
mirror ink is printed on the periphery of the bottom surface of the resin base material, and the printing width of the mirror ink is equal to the projection width of the drilling section on the bottom surface of the resin base material, so that the formed high-brightness edge effect is real, and the appearance effect of the shell aluminum anode is improved.
S3, printing colored ink imitating the texture of an anode on the bottom surface of the resin base material to form a colored ink layer, wherein the printing thickness of the colored ink is equal to that of the mirror ink;
the colored ink layer is arranged, so that the color of the shell is enriched, and the individual requirements of different electronic devices on the color are met.
S4, arranging metal electroplated layers on the bottom surfaces of the colored ink layer and the mirror surface ink layer;
the metal coating is arranged, so that the metal texture of the shell can be increased, and the appearance effect of the aluminum anode of the shell is further improved.
And S5, printing an ultraviolet curing coating on the surface of the resin substrate, pre-curing to form an ultraviolet coating, and stamping the surface of the ultraviolet coating to form concave-convex textures.
Because the resin is easy to age, the ultraviolet curing coating is printed on the surface of the resin base material, so that the aging of the resin can be delayed, and the service life of the shell is prolonged. According to the invention, embossing is further carried out on the surface of the pre-cured ultraviolet coating to form the concave-convex texture, so that the appearance effect of sand blasting or hair on the surface of the aluminum anode is realized, compared with the process conditions and the process cost of sand blasting or hair, the concave-convex texture is formed by embossing on the surface of the ultraviolet coating, and on the premise of ensuring the appearance effect of sand blasting or hair, the production cost is lower and the process conditions are easier to control.
In the scheme of the invention, the side line at the top of the resin substrate is drilled and cut, then the mirror ink layer, the colored ink layer and the electroplated metal plating layer are printed on the bottom surface of the resin substrate in a layering manner, finally the ultraviolet coating is printed on the surface of the resin substrate, and the surface of the ultraviolet coating is provided with the concave-convex texture. The surface of the shell is treated by the process to replace an aluminum metal anode process, so that the shell can be kept to have excellent appearance effect and texture similar to those of a metal aluminum anode; on the other hand, the surface treatment method of the invention greatly reduces the environmental pollution.
In one example, the resin substrate is a PET material having a gloss of greater than 90 degrees, and the resin substrate has a thickness of 0.5 to 1.2mm.
The PET has excellent mechanical properties, high transparency, corrosion resistance and the like, and the transparent PET with the glossiness of more than 90 degrees is selected as the base material of the shell, so that the quality of the shell is improved. The thickness of the resin base material is controlled to be 0.5-1.2mm, and if the thickness of the resin base material is less than 0.5mm, the strength of the base material is low, which is not beneficial to drilling and cutting around the base material. And in order to avoid edge trimming, the drilling and cutting width needs to be controlled within 0.3, which is not beneficial to the effect presentation. If the thickness of the resin base material is higher than 1.2mm, the strength of the base material is too high, which is not beneficial to the subsequent 3D hot press forming of the base material and can also increase the overall thickness of the product.
In one example, the edge line on the top of the resin substrate is chamfered by drilling to form a drilling surface, and the method comprises the following steps:
and (3) performing edge drilling and chamfering on the top side line of the resin base material at the drilling and cutting speed of 28000-36000 rpm to obtain a drilling and cutting surface, wherein the drilling and cutting width is 0.3-0.5mm.
The drilling width is the projection width of the drilling surface on the side of the resin substrate, for example, T3 in FIG. 2 is the drilling width, and the width of T3 is 0.3-0.5mm.
And drilling and cutting at 28000-36000 rpm at the edge line position of the top of the resin substrate by using a CNC (Computer Numerical Control) machine tool in cooperation with a PCD (Polycrystalline Diamond) or MCD (artificial monocrystalline Diamond) highlight tool bit to obtain a drill cutting surface with a flat section.
In one example, the projected width of the cutting plane on the bottom surface of the resin substrate is 0.3 to 0.6mm.
In one example, a metal plating layer is disposed on the bottom surfaces of the colored ink layer and the mirror ink layer, and the metal plating layer includes:
placing the aluminum material in a vacuum coating machine at a speed of 1 × 10 -4 -5×10 -4 Carrying out vacuum coating by Torr.
The aluminum material is hung on the tungsten filament and is placed in a vacuum coating machine, and the tungsten filament is heated so as to melt the aluminum material hung on the tungsten filament. The aluminum material evaporates and scatters, and the molten aluminum is aluminum atoms, and is present in an amorphous or liquid state, adheres to the workpiece, and is crystallized by cooling to become an aluminum thin film.
The sub-intensity in the vacuum coating machine is set at 1 x 10 -4 -5×10 -4 In the Torr range, 1Torr is 1mmHg. When the degree of vacuum is too low, the evaporated aluminum collides with the residual gas or the gas generated when the tungsten filament is heated, and is cooled, and the formed aluminum particles (very small aluminum particle aggregates) adhere to the member to be coated, and the formed coating film loses gloss due to the residual gas possibly contained in the fine aluminum particles, and the adhesion between the coating film and the primer is also greatly reduced.
As the degree of vacuum increases and the temperature of the tungsten filament increases, the kinetic energy of the evaporated aluminum increases, and the surface of the workpiece to be coated is adhered with pure aluminum (without residual gas) and has very high density, so that the coating performance (including adhesion) is improved.
In one example, the thickness of the colored ink layer is 7-10 μm, and the thickness of the metal plating layer is 0.1-0.2 μm.
If the thickness of the metal electroplated layer is less than 0.1 μm, the subsequent electronic products can erode the electroplated layer and cause chemical changes (such as surface atomization and the like) when spraying other finish paint; if the thickness of the metal plating layer is more than 0.2. Mu.m, the plating layer is in a whitened state, which affects the appearance.
In one example, in step S5, embossing is performed on the uv-coated surface, including:
preparing a concave-convex texture structure on the metal master mask;
and transferring the structure of the concave-convex texture on the metal master mask onto an ultraviolet coating to form the concave-convex texture on the ultraviolet coating.
For example, a metal master plate with hair texture is carved by laser carving, and a concave-convex texture structure is presented on the carved metal master plate. The ultraviolet curing coating (UV coating) is sprayed on the surface of the resin substrate, and is pre-cured to form an ultraviolet coating, the thickness of the ultraviolet coating can be set according to requirements, and the thickness of the ultraviolet coating in this embodiment is described by taking 15-35 μm as an example. And then carrying out hot pressing on the surface of the ultraviolet coating by the metal master plate, wherein the pressing depth is 15-25 mu m, so that the concave-convex texture on the surface of the metal master plate is transferred to the ultraviolet coating, and thus, a concave-convex texture structure can be presented on the surface of the ultraviolet coating, and the surface of the shell presents a hair effect and a concave-convex hand feeling. After stamping, the glossiness of the surface of the ultraviolet coating is 10-20 degrees, the glossiness can be controlled by the depth of the engraved texture of the metal master plate, and the deeper the texture is stamped, the lower the glossiness is; the lighter the texture impression, the higher the gloss is. The shell sample obtained by the surface treatment method is shown in fig. 4, and the surface of the sample has clear hairline texture.
The present invention will be described in further detail with reference to specific examples.
Example 1
A method of surface treating a housing, the method comprising:
s11, taking transparent PET with the thickness of 0.5mm as a resin base material, wherein the glossiness of the surface of the transparent PET is larger than 90 degrees, and drilling and cutting a chamfer on a sideline at the top of the resin base material at the rotating speed of 28000rpm by CNC and matching with a PCD highlight cutter head to form a drilling surface; the projection width T1 of the drilling section on the bottom surface of the resin base material is 0.3mm, and the projection width T3 of the drilling section on the side surface of the resin base material is 0.3mm;
step S12, accurately positioning the resin base material through a film jig, and printing silver mirror ink on the peripheral edge of the bottom surface of the resin base material to form a mirror ink layer, wherein the thickness of the mirror ink layer is 7 microns, and the printing width T2 of the silver mirror ink is equal to the projection width T1 of a drilling and cutting surface on the bottom surface of the resin base material, namely T2=0.3mm; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate, so that a more vivid appearance effect like a metal aluminum anode is presented; specifically, the silver mirror ink used in this example was a glossy water-based ink, and the color of the water-based ink on a color card was Pantone 877C.
S13, printing anode-like semitransparent colored ink on the bottom surface of a resin substrate to form a colored ink layer, wherein the printing thickness of the colored ink is 7 micrometers; the colored ink of the embodiment is silver, and can realize metallic texture of silver.
S14, electroplating a metal electroplated layer on the bottom surfaces of the colored ink layer and the mirror ink layer;
hanging an aluminum sheet on a tungsten filament and placing the aluminum sheet in a vacuum coating machine, wherein the pressure in the vacuum coating machine is 10 –4 And (4) heating the tungsten wire, melting the aluminum sheet hung on the tungsten wire, evaporating and scattering the aluminum sheet to various aspects, and attaching the aluminum sheet to the workpiece. The molten aluminum is aluminum atoms, is present in an amorphous or liquid state, adheres to a workpiece, and is cooled and crystallized to form an aluminum thin film having a thickness of 0.1 μm.
Step S15, printing an ultraviolet curing coating on the surface of the resin base material, and pre-curing under 350nm ultraviolet rays, wherein an ultraviolet coating is formed on the surface of the resin base material after the ultraviolet curing coating is dried, and the thickness of the ultraviolet coating is 15 mu m; then, carving a hair texture on the metal master mask through laser carving, then carrying out hot pressing on the metal master mask on the surface of the ultraviolet coating, wherein the stamping depth is 10 micrometers, forming hair textures on the surface of the ultraviolet coating after the hot pressing, and further improving the metal texture of the shell through the concave-convex feeling of the hair textures.
Example 2
A method of surface treating a housing, the method comprising:
s21, taking transparent PET with the thickness of 0.9mm as a resin base material, wherein the glossiness of the surface of the transparent PET is larger than 90 degrees, and drilling and cutting a chamfer on a side line at the top of the resin base material at the rotating speed of 32000rpm by CNC and matching with a PCD highlight cutter head to form a drilling and cutting surface; the projection width T1 of the drilling section on the bottom surface of the resin base material is 0.6mm, and the projection width T3 of the drilling section on the side surface of the resin base material is 0.4mm;
step S22, accurately positioning the resin substrate through a film jig, and printing silver mirror ink on the peripheral edge of the bottom surface of the resin substrate to form a mirror ink layer, wherein the thickness of the mirror ink layer is 8 microns, and the printing width T2 of the silver mirror ink is equal to the projection width T1 of a drilling and cutting surface on the bottom surface of the resin substrate, namely T2=0.6mm; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate, so that a more vivid appearance effect like a metal aluminum anode is presented; specifically, the silver mirror ink used in this example was manufactured by Deligao877C-F17279, deligao.
S23, printing semitransparent colored ink imitating the texture of an anode on the bottom surface of the resin base material to form a colored ink layer, wherein the printing thickness of the colored ink is 8 mu m; the colored ink of the embodiment is silver, and can realize the metallic texture of silver.
Step S24, electroplating a metal electroplated layer on the bottom surfaces of the colored ink layer and the mirror ink layer;
hanging an aluminum wire on a tungsten filament and placing the tungsten filament in a vacuum coating machine, wherein the pressure in the vacuum coating machine is 3 multiplied by 10 -4 Then, the tungsten wire is heated to melt the aluminum wire hanging on the tungsten wire, and the aluminum wire is evaporated and scattered to each side and attached to the workpiece. The molten aluminum is aluminum atoms, and is present in an amorphous or liquid state, adheres to a workpiece to be plated, and is cooled and crystallized to form an aluminum thin film having a thickness of 0.15 μm.
Step S25, printing an ultraviolet curing coating on the surface of the resin base material, and pre-curing under 380nm ultraviolet, wherein the ultraviolet curing coating is dried to form an ultraviolet coating on the surface of the resin base material, and the thickness of the ultraviolet coating is 25 microns; then, carving a hair texture on the metal master plate through laser carving, then carrying out hot pressing on the metal master plate on the surface of the ultraviolet coating, wherein the stamping depth is 15 micrometers, and after the hot pressing, forming hair textures on the surface of the ultraviolet coating, wherein the concave-convex feeling of the hair textures can further improve the metal texture of the shell.
Example 3
A method of surface treating a housing, the method comprising:
s31, taking transparent PET with the thickness of 1.2mm as a resin base material, wherein the glossiness of the surface of the transparent PET is larger than 90 degrees, and drilling and cutting a chamfer on a side line at the top of the resin base material at the rotating speed of 36000rpm by CNC and matching with a PCD highlight cutter head to form a drilling surface; the projection width T1 of the drilling section on the bottom surface of the resin base material is 0.5mm, and the projection width T3 of the drilling section on the side surface of the resin base material is 0.5mm;
step S32, accurately positioning the resin substrate through a film jig, and printing silver mirror ink on the peripheral edge of the bottom surface of the resin substrate to form a mirror ink layer, wherein the thickness of the mirror ink layer is 10 microns, and the printing width T2 of the silver mirror ink is equal to the projection width T1 of a drilling and cutting surface on the bottom surface of the resin substrate, namely T2=0.5mm; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate, so that a more vivid appearance effect like a metal aluminum anode is presented; specifically, the silver mirror ink used in this example was Deligao877C-F17279, manufactured by Deligao paint company.
Step S33, printing anode-texture-imitated semitransparent colored ink on the bottom surface of the resin base material to form a colored ink layer, wherein the printing thickness of the colored ink is 10 microns; the colored ink of the embodiment is silver, and can realize metallic texture of silver.
Step S34, electroplating a metal electroplated layer on the bottom surfaces of the colored ink layer and the mirror-surface ink layer;
hanging an aluminum wire on a tungsten wire and placing the aluminum wire in a vacuum coating machine, wherein the pressure in the vacuum coating machine is 5 multiplied by 10 -4 Then, the tungsten wire is heated to melt the aluminum wire hanging on the tungsten wire, and the aluminum wire is evaporated and scattered to each side and attached to the workpiece. The molten aluminum is aluminum atoms, is present in an amorphous or liquid state, adheres to a workpiece, and is cooled and crystallized to form an aluminum thin film having a thickness of 0.2 μm.
Step S35, printing an ultraviolet curing coating on the surface of the resin base material, and pre-curing under 400nm ultraviolet rays, wherein an ultraviolet coating is formed on the surface of the resin base material after the ultraviolet curing coating is dried, and the thickness of the ultraviolet coating is 35 mu m; then, carving a hair texture on the metal master plate through laser carving, then carrying out hot pressing on the metal master plate on the surface of the ultraviolet coating, wherein the stamping depth is 25 mu m, and after the hot pressing, forming hair textures on the surface of the ultraviolet coating, wherein the concave-convex feeling of the hair textures can further improve the metal texture of the shell.
Performance testing
Examples 1-3 the housings prepared were tested for the following properties after the samples were processed and left to stand for 24 hours at room temperature.
And (3) testing the glossiness: the glossiness of the standard sample (i.e. aluminum anode casing) and the casing surface prepared in this example was measured using a gloss meter, and the product passing conditions were as follows: the gloss difference Δ = ± 5 °;
and (3) color difference testing: performing black-and-white calibration on a color difference instrument, adopting a CIELAB value method, firstly testing the L, a and b values of a standard sample (namely an aluminum anode shell), taking the L, a and b values as standard samples, secondly testing the L ', a ' and b ' values of the shell prepared in the embodiment, and finally calculating delta L, delta a, delta b and delta E; the qualified conditions of the product are as follows: Δ L = ± 1.2, Δ a = ± 0.5, Δ b = ± 0.5, and Δ E ≦ 1.5.
RCA abrasion resistance: rubbing 150 times; the qualified conditions of the product are as follows: the surface film should be free of bubbles and wrinkles, and obviously have different colors except for the test points, and the bottom of the test points is not exposed.
Rubber friction resistance: the number of rubs with an eraser: 1000 times; the qualified conditions of the product are as follows: the surface film should have no foaming, wrinkling, cracking and no obvious visible discoloration.
Solvent abrasion resistance: using 100% pure cotton in room temperature environmentThe white gauze was laminated in 5 layers (30 × 30mm), soaked in 95% ethanol and subjected to an abrasion test: 500g/cm 2 Force, distance is 6cm, speed is 60 to-and-fro/min, the tested area is wiped back and forth, one to-and-forth motion is counted as 1 time, the cycle is totally 800 times, the tested area is cleaned after wiping, and the tested area is placed for 2 hours; the qualified conditions of the product are as follows: the surface film should not have the phenomena of bubbling, wrinkling and cracking, and have no obvious visible heterochrosis, and the gauze can not be colored.
Testing wool felt: using a wear-resisting instrument at room temperature, using a wool felt to wipe a tested area back and forth at a load of 200g and a distance of 5CM, counting one back and forth time as 1 time, circulating for 20 ten thousand times totally, and cleaning after wiping; the qualified conditions of the product are as follows: the surface can not be damaged and the surface glossiness can not be obviously changed.
Table 1 shows the results of the performance tests
The basic principles of the present application have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present application are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is provided for purposes of illustration and understanding only, and is not intended to limit the application to the details which are set forth in order to provide a thorough understanding of the present application.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably herein. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A method of surface treating a housing, the method comprising:
drilling and cutting a chamfer on the side line of the top of the resin base material to form a drilling and cutting surface;
mirror ink is printed on the periphery of the bottom surface of the resin base material to form a mirror ink layer, and the printing width of the mirror ink is equal to the projection width of the drilling section on the bottom surface of the resin base material; the drilling section and the mirror ink layer form a high-brightness edge on the side wall of the resin substrate;
printing colored ink with an anode-like texture on the bottom surface of the resin substrate to form a colored ink layer, wherein the printing thickness of the colored ink is equal to that of the mirror ink;
arranging metal electroplated layers on the bottom surfaces of the colored ink layer and the mirror surface ink layer;
printing an ultraviolet curing coating on the surface of the resin substrate, pre-curing to form an ultraviolet coating, and stamping the surface of the ultraviolet coating to form concave-convex textures.
2. The case surface treatment method according to claim 1, wherein the resin base material is a PET material having a gloss of more than 90 degrees, and the thickness of the resin base material is 0.5 to 1.2mm.
3. The method of claim 2, wherein the step of drilling a chamfer on the edge of the top of the resin substrate to form a drilling surface comprises:
and (3) performing edge drilling and chamfering on the top of the resin base material at the drilling and cutting speed of 28000-36000 rpm to obtain a drilling and cutting surface, wherein the projection width of the drilling and cutting surface on the side surface of the resin base material is 0.3-0.5mm.
4. The casing surface treatment method according to claim 3, wherein a projected width of the cut surface on the bottom surface of the resin base material is 0.3 to 0.6mm.
5. The method for processing the surface of the housing according to claim 1, wherein the step of providing the metal plating layer on the bottom surfaces of the colored ink layer and the mirror ink layer comprises:
placing the aluminum material in a vacuum coating machine at a speed of 1 × 10 -4 -5×10 -4 Carrying out vacuum coating by Torr.
6. The casing surface treatment method according to claim 5, wherein the thickness of the colored ink layer is 7 to 10 μm, and the thickness of the metal plating layer is 0.1 to 0.2 μm.
7. The shell surface treatment method according to claim 1, wherein the embossing on the ultraviolet coating surface comprises:
preparing a concave-convex texture structure on the metal master mask;
and transferring the structure of the concave-convex texture on the metal master mask onto an ultraviolet coating to form the concave-convex texture on the ultraviolet coating.
8. The casing surface treatment method according to claim 1, wherein the ultraviolet coating layer has a glossiness of 10 to 20 degrees after the uneven texture is formed on the ultraviolet coating layer.
9. A housing produced by the method for surface treatment of a housing according to any one of claims 1to 8, comprising:
the resin base material is used for drilling and cutting a chamfer angle on a side line at the top of the resin base material to form a drilling surface;
the mirror surface ink layer is positioned on the peripheral edge of the bottom surface of the resin base material, and the width of the mirror surface ink layer is equal to the projection width of the drilling section on the bottom surface of the resin base material;
the colored ink layer is arranged on the bottom surface of the resin base material;
the metal electroplated layer is arranged on the bottom surface of the mirror-surface ink layer; and
the ultraviolet coating is arranged on the surface of the resin base material, and the surface of the ultraviolet coating is provided with concave-convex textures.
10. An electronic device characterized by comprising the housing of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210695926.1A CN115178447A (en) | 2022-06-20 | 2022-06-20 | Shell, shell surface treatment method and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210695926.1A CN115178447A (en) | 2022-06-20 | 2022-06-20 | Shell, shell surface treatment method and electronic equipment |
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| CN115178447A true CN115178447A (en) | 2022-10-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107885280A (en) * | 2017-12-19 | 2018-04-06 | 昆山慧智柏电子科技有限公司 | A kind of laptop computer rotating shaft shell and its manufacture method |
| CN108839504A (en) * | 2018-08-03 | 2018-11-20 | 合肥联宝信息技术有限公司 | A kind of shell and surface treatment method and the electronic equipment for including the shell |
| CN109659667A (en) * | 2018-10-18 | 2019-04-19 | 广州华夏职业学院 | A kind of plastic casing structure and preparation method thereof |
| US20230015912A1 (en) * | 2020-01-07 | 2023-01-19 | Hewlett-Packard Development Company, L.P. | Covers for electronic devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107885280A (en) * | 2017-12-19 | 2018-04-06 | 昆山慧智柏电子科技有限公司 | A kind of laptop computer rotating shaft shell and its manufacture method |
| CN108839504A (en) * | 2018-08-03 | 2018-11-20 | 合肥联宝信息技术有限公司 | A kind of shell and surface treatment method and the electronic equipment for including the shell |
| CN109659667A (en) * | 2018-10-18 | 2019-04-19 | 广州华夏职业学院 | A kind of plastic casing structure and preparation method thereof |
| US20230015912A1 (en) * | 2020-01-07 | 2023-01-19 | Hewlett-Packard Development Company, L.P. | Covers for electronic devices |
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