WO2021238402A1 - 壳体、壳体的制备方法及电子设备 - Google Patents

壳体、壳体的制备方法及电子设备 Download PDF

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Publication number
WO2021238402A1
WO2021238402A1 PCT/CN2021/084757 CN2021084757W WO2021238402A1 WO 2021238402 A1 WO2021238402 A1 WO 2021238402A1 CN 2021084757 W CN2021084757 W CN 2021084757W WO 2021238402 A1 WO2021238402 A1 WO 2021238402A1
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WO
WIPO (PCT)
Prior art keywords
layer
plastic
mold
pointed
casing
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Application number
PCT/CN2021/084757
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English (en)
French (fr)
Inventor
樊泽平
蒋正南
Original Assignee
Oppo广东移动通信有限公司
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Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2021238402A1 publication Critical patent/WO2021238402A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • 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
    • H05K5/0243—Mechanical details of casings for decorative purposes

Definitions

  • This application belongs to the technical field of electronic products, and specifically relates to a housing, a method for preparing the housing, and electronic equipment.
  • the present application provides a casing, a method for preparing the casing, and an electronic device.
  • the casing presents multiple glittering visual effects, enriches the appearance of the casing, improves the appearance competitiveness of the electronic device, and avoids homogeneity. It is more conducive to its application.
  • the present application provides a housing including a plastic housing body, and the surface of the plastic housing body has a plurality of pointed protrusion structures.
  • the present application provides a method for preparing a shell, including:
  • An injection mold is provided, the injection mold includes a male mold and a female mold correspondingly arranged, and a surface of the female mold close to the male mold has a plurality of recessed structures;
  • the plastic is injected into the injection space, and a plastic shell body is obtained through an injection molding process.
  • the surface of the plastic shell body has a plurality of pointed convex structures that match the concave structure.
  • the present application provides an electronic device, including a display screen, and a cover plate and a housing provided on opposite sides of the display screen, the housing including a plastic housing body, and the plastic housing body The surface has a plurality of pointed convex structures.
  • FIG. 1 is a schematic structural diagram of a housing provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the surface microstructure of a housing provided by an embodiment of the application.
  • FIG. 3 is a schematic structural diagram of a housing provided by another embodiment of the application.
  • FIG. 4 is a schematic diagram of the surface microstructure of a housing provided by another embodiment of the application.
  • FIG. 5 is a schematic structural diagram of a housing provided by another embodiment of the application.
  • Fig. 6 is a schematic structural diagram of a housing provided by another embodiment of the application.
  • FIG. 7 is a schematic structural diagram of a housing provided by another embodiment of the application.
  • FIG. 8 is a schematic flow chart of a method for preparing a housing provided by an embodiment of the application.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of this application.
  • Plastic shell body-10 hardened layer-20, decorative film-30, UV texture layer-31, coating layer-32, color layer-33, shell-100, display-200, cover-300.
  • An embodiment of the present application provides a housing including a plastic housing body, and the surface of the plastic housing body has a plurality of pointed protrusion structures.
  • the surface roughness Ra of the plastic shell body with the pointed convex structure is 2.5 ⁇ m-3.5 ⁇ m.
  • the pointed protrusion structure is a micron-level structure
  • the height of the pointed protrusion structure is 14 ⁇ m-30 ⁇ m
  • the distribution density of the pointed protrusion structure is 500 pieces/cm 2 -2000 pieces/cm 2 .
  • the average height Rz of the pointed protrusion structure is 15 ⁇ m-25 ⁇ m; the maximum height Ry of the pointed protrusion structure is 19 ⁇ m-30 ⁇ m; the lateral dimension of the pointed protrusion structure is 80 ⁇ m-120 ⁇ m.
  • the surface glossiness of the plastic shell body with the pointed convex structure is 17-24.
  • the pointed convex structure includes at least one of a pyramid structure, a pyramid-like structure and a conical structure.
  • the plastic shell body is injection molded.
  • the shell further includes a hardened layer, and the hardened layer is arranged on a side surface of the plastic shell body with the pointed convex structure.
  • the thickness of the hardened layer is 4 ⁇ m-30 ⁇ m.
  • the hardened layer contains glass powder, and the particle size of the glass powder is 40 ⁇ m-80 ⁇ m.
  • the housing further includes a decorative film
  • the decorative film is arranged on the surface of the plastic housing body that faces away from the pointed convex structure
  • the decorative film includes a UV texture layer, a coating layer, and a color At least one of the layers.
  • the decorative film further includes a substrate layer, and the substrate layer is disposed between at least one of the UV texture layer, the coating layer, and the color layer, and the plastic shell body.
  • the embodiment of the present application also provides a method for preparing a housing, including:
  • An injection mold is provided, the injection mold includes a male mold and a female mold correspondingly arranged, and a surface of the female mold close to the male mold has a plurality of recessed structures;
  • the plastic is injected into the injection space, and a plastic shell body is obtained through an injection molding process.
  • the surface of the plastic shell body has a plurality of pointed convex structures that match the concave structure.
  • the concave structure is formed on the surface of the master mold by laser engraving, and the parameters of the laser engraving include power of 10W-50W, frequency of 50HZ-100HZ, focal length of 170mm-180mm, and line of 0.10mm-0.12mm. Width, light spot moving speed of 750mm/s-1000mm/s, jumping speed of 900mm/s-2000mm/s.
  • the laser engraving includes roughing first and then finishing, wherein the parameters of the roughing include a power of 20W-50W, a frequency of 50HZ-70HZ, and a light spot moving speed of 750mm/s-850mm/s , 900mm/s-1200mm/s jump speed, the finishing parameters include 10W-15W power, 80HZ-100HZ frequency, 900mm/s-1000mm/s light spot moving speed, 1500mm/s-2000mm /s Jump speed.
  • the parameters of the roughing include a power of 20W-50W, a frequency of 50HZ-70HZ, and a light spot moving speed of 750mm/s-850mm/s , 900mm/s-1200mm/s jump speed
  • the finishing parameters include 10W-15W power, 80HZ-100HZ frequency, 900mm/s-1000mm/s light spot moving speed, 1500mm/s-2000mm /s Jump speed.
  • the sandblasting includes a spray gun with a caliber of 6mm-10mm and spraying under the air pressure of the spray gun of 1 kg/cm 2 -3 kg/cm 2 160 mesh-200 mesh sand.
  • the gloss of the master mold is 15-25.
  • the preparation method further includes: coating a hardening liquid on the surface of the plastic shell body with the pointed protrusion structure, and forming a hardening layer after curing.
  • the preparation method further includes: forming a decorative film on the surface of the plastic housing body facing away from the pointed convex structure, and the decorative film includes at least one of a UV texture layer, a coating layer, and a color layer. layer.
  • An embodiment of the present application also provides an electronic device, including a display screen, and a cover plate and a housing provided on opposite sides of the display screen.
  • the housing includes a plastic housing body.
  • the surface has a plurality of pointed convex structures.
  • FIG. 1 is a schematic structural diagram of a housing 100 provided by an embodiment of the present application.
  • the housing 100 includes a plastic housing body 10 having a plurality of pointed protrusion structures on the surface of the plastic housing body 10.
  • a plastic housing body 10 with a pointed convex structure is provided.
  • the pointed convex structure can reflect light, and each pointed convex structure shines like a diamond, thereby making the housing 100
  • the appearance of the housing 100 presents a flashing effect, enriches the appearance effect of the housing 100, avoids homogeneity, and can also greatly improve the appearance competitiveness of the housing 100, which is conducive to the widespread use of the housing 100.
  • the surface of the plastic casing body 10 has a plurality of pointed convex structures, which give the casing 100 a gleaming visual effect.
  • the degree of light transmission of the plastic housing body 10 is not limited.
  • the plastic housing body 10 may be colorless and transparent, or it may be It is colored and transparent, but also can be solid color.
  • the plastic housing body 10 when the housing 100 not only includes the plastic housing body 10, but also includes other structures such as a decorative film 30, in order to present the appearance effect of other structures, at this time, the plastic housing body 10 has a certain Transparency.
  • the optical transmittance of the plastic housing body 10 is greater than 90%.
  • the optical transmittance of the plastic housing body 10 is greater than 92%. Among them, the optical transmittance is the transmittance of light in the 380nm-780nm band.
  • the material of the plastic housing body 10 can be, but is not limited to, any known plastic used to prepare the housing.
  • the material of the plastic housing body 10 can be, but is not limited to, any known material that can be used for injection molding.
  • the material of the plastic housing body 10 includes at least one of polycarbonate, polymethyl methacrylate, polyethylene terephthalate, and transparent nylon.
  • the material of the plastic housing body 10 includes at least one of polycarbonate and polymethyl methacrylate, so that the mechanical properties and permeability of the plastic housing body 10 are better, and the housing is improved. 100 performance.
  • optical grade plastic can be selected to meet the required optical transmittance requirements.
  • the shape and size of the plastic housing body 10 are not limited, and can be selected and designed according to actual needs.
  • the plastic housing body 10 can be, but not limited to, a rear shell and/or a middle frame of an electronic device.
  • the shape can be a 2D shape, a 2.5D shape, or a 3D shape.
  • the plastic shell body 10 can be processed by injection molding to a desired shape.
  • the 2.5D shape or the 3D shape of the plastic shell body 10 makes the shell 100 more three-dimensional and smoother to the touch.
  • the thickness of the plastic housing body 10 is 0.05 mm to 1 mm, specifically, but not limited to, 0.05 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm , 1mm, etc., to meet the requirements of the impact resistance of the shell 100, and not to be too thick, to meet the needs of light and thin.
  • the multiple pointed protrusion structures on the surface of the plastic casing body 10 belong to a part of the plastic casing body 10 and can be formed by integral molding.
  • the pointed convex structure reflects light to achieve a flashing effect, and the multiple pointed convex structures make the housing 100 present a flashing sand texture.
  • the pointed convex structure is a micron-level structure. At this time, the pointed convex structure reflects light, so that the appearance of the housing 100 presents a star-studded flashing effect, and the sense of delicacy is enhanced.
  • the height of the pointed protrusion structure is 14 ⁇ m-30 ⁇ m. Further, the height of the pointed protrusion structure is 15 ⁇ m-25 ⁇ m. Furthermore, the height of the pointed convex structure is 17 ⁇ m-21 ⁇ m.
  • the height of the pointed protrusion structure may be, but is not limited to, 14 ⁇ m, 16 ⁇ m, 18 ⁇ m, 20 ⁇ m, 22 ⁇ m, 23 ⁇ m, 26 ⁇ m, or 28 ⁇ m.
  • the height of the pointed convex structure can be calculated, but not limited to, by reading the surface texture features of the plastic housing body 10 with the pointed convex structure after laser scanning under a microscope.
  • the average height Rz of the pointed protrusion structure is 15 ⁇ m-25 ⁇ m. Understandably, Rz is the ten-point height of the microscopic unevenness. Further, the average height Rz of the pointed protrusion structure is 20 ⁇ m-24 ⁇ m.
  • the maximum height Ry of the pointed protrusion structure is 19 ⁇ m-30 ⁇ m. Understandably, Ry is the maximum height of the profile. Further, the maximum height Ry of the pointed protrusion structure is 22 ⁇ m-28 ⁇ m.
  • the lateral dimension of the pointed protrusion structure is 80 ⁇ m-120 ⁇ m. Further, the lateral dimension of the pointed protrusion structure is 90 ⁇ m-110 ⁇ m. Specifically, the lateral dimension of the pointed protrusion structure may be, but is not limited to, 85 ⁇ m, 95 ⁇ m, 100 ⁇ m, 105 ⁇ m, or 115 ⁇ m.
  • the horizontal dimension indicates the dimension on the surface of the plastic housing body 10 in a direction perpendicular to the height direction of the pointed protrusion structure.
  • the pointed convex structure may be a regular-shaped convex structure or an irregular-shaped convex structure.
  • the pointed convex structure may have multiple sides, and different sides have angles between them to form a pointed structure; it may also have a curved side surface.
  • the pointed convex structure includes at least one of a pyramid structure, a pyramid-like structure, and a cone structure.
  • the pointed convex structure may be, but not limited to, a triangular pyramid, a quadrangular pyramid, a three-type pyramid, a four-type pyramid, a cone, and the like. It is understandable that both the pyramid structure and the pyramid-like structure have a tip.
  • the side surface of the pyramid structure is a tangent surface.
  • the tip of the pyramid-like structure can be flat or curved.
  • the pyramid-like structure can Including prism.
  • the pointed convex structure is a pyramid structure or a cone structure, part of the reflected light is reflected from the side and part of the reflected light is reflected from the tip; when the pointed convex structure is a pyramid-like structure, the reflected light from the tip increases; reflected light After that, the pointed convex structure has a sparkling effect.
  • the pointed convex structure is a pyramid structure or a cone structure, the angle of the reflected light changes more obviously during the change of the incident angle of the light, which makes the sparkle effect at different angles more obvious.
  • the radius of curvature when the tip of the pyramid-like structure is a curved surface, the radius of curvature may be 0.1 ⁇ m-3 ⁇ m; specifically, the radius of curvature may be, but not limited to, 0.1 ⁇ m, 0.5 ⁇ m, 1 ⁇ m, 2 ⁇ m, or 3 ⁇ m to achieve Different degrees of reflective effect.
  • each pointed convex structure can be the same or different.
  • at least one parameter of the height, lateral size, and shape of the plurality of pointed convex structures is different, so that the housing 100 can present a clear flashing effect at different angles, and improve the appearance performance.
  • the plurality of pointed protrusion structures may be continuously arranged, or may be arranged at intervals, or may be partially arranged continuously and partially arranged at intervals. Continuously arranged pointed convex structures can present continuous flashing points, and the flashing effect is more concentrated; the pointed convex structures arranged at intervals can disperse the flashing points, and each pointed convex structure can have a flashing effect at different angles. Better presented.
  • a plurality of pointed convex structures may be regularly arranged on the surface of the plastic housing body 10 to present a uniformly dispersed flashing effect.
  • a plurality of pointed convex structures are arranged irregularly on the surface of the plastic housing body 10, which is more in line with the actual starlight effect, and has high realizability.
  • a plurality of pointed convex structures form a cluster unit.
  • the cluster unit includes a plurality of pointed protrusion structures
  • the surface of the plastic housing body 10 has a plurality of cluster units.
  • the shape and size of each pointed convex structure in the cluster unit can be the same or different; the shape and size of each cluster unit can be the same or different.
  • the reflection angle of each pointed convex structure to the light occurs at different angles.
  • the change makes the cluster unit's light emitting flicker change, presenting a more obvious flashing effect.
  • the cluster unit has a micron-level structure.
  • the cluster units can be distributed on the surface of the plastic housing body 10 at intervals or continuously.
  • the surface roughness Ra of the plastic housing body 10 with the pointed protrusion structure is 2.5 ⁇ m-3.5 ⁇ m, so as to improve the distribution of the pointed protrusion structure on the plastic housing body 10, so that the housing The flashing effect of 100 is more obvious and dense; at the same time, the pointed convex structures are densely distributed in the plastic housing body 10, thereby creating a smooth touch.
  • the distribution density of the pointed convex structures is 500 pcs/cm 2 -2000 pcs/cm 2 , so as to achieve the starry effect. Further, the distribution density of the pointed protrusion structure is 700 pcs/cm 2 -1900 pcs/cm 2 .
  • the distribution density of the pointed convex structure is 800 pcs/cm 2 -1800 pcs/cm 2 , presenting a denser and finer flash sand effect.
  • the distribution density of the pointed protrusion structure can be, but is not limited to, 800/cm 2 -1000/cm 2 , 1000/cm 2 -1150/cm 2 , 1200/cm 2 -1300/cm 2 Or 1600 pcs/cm 2 -1850/cm 2 .
  • the number of pointed protrusion structures per unit length (cm) is 25-45.
  • the number of pointed convex structures per unit length (cm) is 27 to 43, which can present a relatively obvious and dense flash sand effect.
  • the above-mentioned density of the pointed convex structure avoids the appearance of non-flashing effects such as large-area reflections or large-area matte surfaces, and ensures that the surface of the housing 100 presents a dense, fine and rich flashing sand effect. .
  • the Mitutoyo roughness meter SJ-310 (accuracy 1 ⁇ m) is used to measure the surface roughness Ra of the plastic housing body 10 with the pointed convex structure, the average height Rz of the pointed convex structure, and the sharp convex The maximum height of the structure Ry and the number of pointed convex structures per unit length (cm) are measured.
  • the roughness meter is placed on the surface of the plastic housing body 10 with the pointed convex structure, and the roughness meter can detect and display the values of the above-mentioned parameters after it starts to work. It is understandable that other feasible instruments can also be used to detect the above-mentioned parameters.
  • the surface glossiness of the plastic housing body 10 with the pointed convex structure is 17-24.
  • the surface of the plastic shell body 10 has an excellent gloss effect, which can present the appearance effect of the plastic shell body 10, and at the same time, the gloss is not too high, thereby avoiding the phenomenon of light reflection.
  • the surface glossiness of the plastic shell body 10 with the pointed convex structure is 18-23.
  • the Koshiga gloss meter MG6-F1 (accuracy 1 degree) is used for measurement.
  • the gloss meter is placed on the surface of the plastic housing body 10 with a pointed convex structure, and the gloss meter can detect and display the surface gloss of the plastic housing body 10 after it starts to work. It is understandable that other feasible instruments can also be used to detect the above-mentioned parameters.
  • FIG. 2 is a schematic diagram of the surface microstructure of the housing 100 according to an embodiment of the application.
  • the surface of the plastic housing body 10 is scanned by a laser microscope, and the surface microstructure of the housing 100 is obtained after three-dimensional imaging.
  • the pointed convex structures are densely distributed on the surface, and the pointed convex structures are partially arranged continuously and partially arranged at intervals; the shapes and sizes of the pointed convex structures are different; the pointed convex structures reflect light, making the shell
  • the surface of the body 100 forms the effect of glittering stars, realizing the glittering sand texture.
  • the plastic housing body 10 may be injection molded.
  • the injection molding of the plastic housing body 10 includes: providing an injection mold, the injection mold includes a male mold and a female mold correspondingly arranged, and the female mold has a plurality of recessed structures on the surface close to the male mold, and the recessed structure and The pointed convex structure is matched; the male mold and the female mold are closed to form an injection space between the male mold and the female mold; the plastic is injected into the injection space, and the plastic shell body 10 is obtained through an injection molding process.
  • the male mold can also be called a back mold, a movable mold, a convex mold, a lower mold or a male mold
  • a female mold can also be called a front mold, a fixed mold, a concave mold, an upper mold or a female mold.
  • the concave structure can be formed on the surface of the master mold through a laser engraving process, but is not limited to. Since the pointed protrusion structure is small, the corresponding recessed structure also needs to be fine enough. The shaping of the recessed structure can be finely controlled by the laser laser engraving process, so that the required pointed protrusions are formed on the surface of the plastic housing body 10.
  • the structure realizes the flashing effect; at the same time, the laser carving process can make the size and distribution of the recessed structure on the master mold controllable.
  • the master mold is used to form a concave structure in a laser engraving machine.
  • the size, distribution density, shape, etc. of the concave structure can be set according to the size of the pointed convex structure actually required.
  • the provided mold can be inspected before laser engraving to avoid damage and affect the effect of the final formed recessed structure; the mold can also be left to make the temperature difference between the mold and the external environment small, which is beneficial to the It is laser engraved.
  • a concave structure is formed on the surface of the master mold by laser engraving, and the parameters of the laser engraving can be selected as required.
  • the laser engraving power can be 10W-50W
  • the frequency can be 50HZ-100HZ
  • the focal length can be 170mm-180mm
  • the light spot movement speed can be 750mm/s-1000mm/s
  • the jump speed can be 900mm/s- 2000mm/s.
  • the power is too small, the processing speed is slow, and the processing efficiency is low; the power is too large, the processing speed is fast, and the surface of the master mold is seriously heated; the frequency is too small, the laser engraving effect is not obvious; the frequency is too high, the surface of the master mold Severe heating; too slow movement speed of the light spot, severe heating of the surface of the master mold; too fast movement speed of the light spot, the laser engraving effect is affected; the jumping speed is too slow, the laser engraving effect is affected.
  • the temperature of the laser engraving is 1200°C-1600°C to avoid excessive damage to the surface of the master mold.
  • the line width in order to further improve the processing accuracy of laser engraving, can be set to 0.10mm-0.12mm. Further, when multi-layer laser engraving is required, the minimum cutting amount of a single layer can be 0.1 ⁇ m-0.3 ⁇ m, which increases the precision of laser engraving.
  • laser engraving may include rough machining and finishing, and rough machining can be performed first, and then finishing, so as to improve the speed of laser engraving and the precision of laser engraving.
  • rough machining parameters include 20W-50W power, 50HZ-70HZ frequency, 750mm/s-850mm/s light spot moving speed, 900mm/s-1200mm/s jump speed; finishing parameters Including 10W-15W power, 80HZ-100HZ frequency, 900mm/s-1000mm/s light spot moving speed, 1500mm/s-2000mm/s jump speed.
  • the area to be processed of the master mold may be partitioned to form multiple laser engraving areas to achieve more refined processing.
  • a plurality of laser engraving areas are superimposed on each other, so that the corner area of the laser engraving area is small and the plane area is large.
  • the area to be processed of the master mold is divided into multiple laser engraving areas, and the size of the laser engraving area is (1mm-10mm) ⁇ (1mm-10mm).
  • the recessed structure can be formed by a multi-layer laser engraving process. In other words, the concave structure is formed by layered laser carving. In one embodiment, the depth of each layer of laser engraving is 1 ⁇ m-2 ⁇ m.
  • the depth of each layer of laser engraving can be, but is not limited to, 1 ⁇ m, 1.1 ⁇ m, 1.15 ⁇ m, 1.3 ⁇ m, 1.5 ⁇ m, 1.65 ⁇ m, 1.7 ⁇ m, 1.8 ⁇ m, 1.9 ⁇ m, or 2 ⁇ m.
  • the second recessed substructure can be continuously formed on the first recessed substructure to finally obtain the recessed structure. It can be understood that the size, shape, distribution density, and position of different recessed substructures are different in at least one parameter. Further, it is also possible to continue to stack other recessed substructures to obtain a recessed structure.
  • the region to be processed by the master mold is divided into laser engraving, and each laser engraving area is subjected to rough machining and finishing successively to form a plurality of first recessed substructures; on this basis, through re-engraving Through rough machining and finishing, a plurality of second recessed substructures are formed, thereby obtaining the required recessed structure.
  • the region to be processed by the master mold is divided into laser engraving, and each laser engraving area is roughed and finished sequentially to form a plurality of first recessed substructures, in which the focal length of 180mm and the focal length of 0.12 are maintained.
  • the surface roughness Ra of the master mold after laser engraving is 4 ⁇ m-5 ⁇ m
  • the depth of the recessed structure is 25 ⁇ m-40 ⁇ m
  • the average depth Rz is 15 ⁇ m-25 ⁇ m
  • the maximum depth Ry is 28 ⁇ m-40 ⁇ m, in order to facilitate molding
  • the required plastic shell can realize the flashing effect.
  • the surface roughness Ra of the master mold after laser engraving is 4.5 ⁇ m-4.9 ⁇ m
  • the depth of the recessed structure is 30 ⁇ m-36 ⁇ m
  • the average depth Rz is 28 ⁇ m-32 ⁇ m
  • the maximum depth Ry is 30 ⁇ m-36 ⁇ m.
  • the distribution density of the recessed structures on the surface of the master mold after laser engraving is 900 pieces/cm 2 -2500 pieces/cm 2 , and the number of recessed structures per unit length (cm) is 30-50 pieces. Achieve a more obvious and dense flash sand effect. Further, the number of recessed structures per unit length (cm) can be, but is not limited to, 42-48, 44-46, etc.
  • the Rockwell hardness (HRC) of the master model after laser engraving is 50-70. Furthermore, the Rockwell hardness of the master model after laser engraving is 55-65. Specifically, the Rockwell hardness of the master model after laser engraving can be but not limited to 50, 60, 65, 70, etc.
  • the master mold after laser engraving still has high hardness, ensuring its good mechanical properties, which is beneficial to the subsequent injection molding process.
  • the master mold of the laser engraving can also be sandblasted.
  • Sandblasting cleans the surface of the master mold through the impact of high-speed sand flow. Due to the impact and cutting action of sand particles on the surface of the master mold, the surface of the master mold has a certain degree of cleanliness and gloss.
  • sandblasting can use a spray gun with a caliber of 6mm-10mm, and spray sand particles of 160-200 mesh under the air pressure of the spray gun of 1 kg/cm 2 -3 kg/cm 2 to obtain the surface performance of the master mold. Very good improvement.
  • the gloss of the master mold is 15-25.
  • the sand particles include at least one of zirconium sand, glass beads and steel beads.
  • the surface roughness Ra of the master mold is 2.8 ⁇ m-3.2 ⁇ m
  • the depth of the recessed structure is 12 ⁇ m-32 ⁇ m
  • the average depth Rz is 14 ⁇ m-26 ⁇ m
  • the maximum depth Ry is 19 ⁇ m-30 ⁇ m.
  • the number in (cm) is 25-45, which is beneficial for preparing the plastic housing body 10.
  • the depth of the recessed structure is 14 ⁇ m-30 ⁇ m
  • the average depth Rz is 15 ⁇ m-25 ⁇ m
  • the maximum depth Ry is 22 ⁇ m-30 ⁇ m
  • the number per unit length (cm) is 27-43.
  • an 8mm caliber spray gun is used for sandblasting , and 180 mesh glass beads are sprayed at a pressure of 2 kg/cm 2 of the spray gun. After sandblasting, the gloss of the master mold is 17, which has excellent surface properties.
  • the above-mentioned injection mold can be used to prepare the plastic housing body 10.
  • the plastic can be, but is not limited to, any known material that can be used for injection molding.
  • the plastic includes at least one of polycarbonate, polymethyl methacrylate, polyethylene terephthalate, and transparent nylon.
  • a plastic with improved performance can be selected, such as but not limited to hardened polycarbonate.
  • the plastic may be dried before being injected into the injection molding space.
  • the plastic is dried at 80°C-120°C for 3h-8h to remove moisture, which is conducive to subsequent injection molding. Further, the plastic is dried at 100°C-120°C for 4h-6h, so that the moisture content in the plastic does not exceed 0.05%.
  • a dehumidification dryer or a hot air dryer can be selected, but not limited to.
  • the plastic shell body 10 can be manufactured through the processes of plastic melting, upper mold, debugging, mold clamping, injection filling, pressure holding molding, cooling, and mold opening.
  • the injection mold provided is a compression mold.
  • the compression mold may also include a positioning ring, a sprue sleeve, a block, a compression spring, an upper thimble plate, a lower thimble plate, a male template, a female template, a bearing plate, and a mold. Feet, upper fixing plate and lower fixing plate, etc.
  • a Sumitomo all-electric injection molding machine can be used, but not limited to. Compression injection molding can eliminate internal stress, and the obtained plastic housing body 10 has a more uniform size and good compactness. At the same time, it is beneficial to produce a thinner thickness of the plastic housing body 10, which is beneficial to its application.
  • the following injection molding parameters can be used, but not limited to, to obtain a plastic housing body 10 with excellent performance, uniform thickness, and thinner.
  • the temperature of the barrel is 200°C-350°C.
  • the barrel temperature is 350°C in one stage, 355°C in the second stage, 355°C in the third stage, 330°C in the fourth stage, and 315°C in the fifth stage.
  • the melting temperature of the plastic is 220°C-260°C. Further, the melting temperature of the plastic is 230°C-250°C.
  • the number of mold cavities can be selected according to needs, such as one mold with two cavities, one mold with one cavity, and so on.
  • the mold temperature of the mold is 50°C-85°C.
  • the mold temperature of the male mold is 50°C-70°C
  • the mold temperature of the female mold is 70°C-85°C.
  • the mold temperature of the male mold may be 55°C
  • the mold temperature of the female mold may be 80°C.
  • the clamping force is 150T-180T.
  • segmented mode locking can be performed.
  • the pressure of the first stage of clamping is 30kgf/cm 2 , the speed is 50mm/s, and the end position is 200mm;
  • the pressure of the second stage of clamping is 30kgf/cm 2 , the speed is 40mm/s, and the end position is 100mm.
  • the storage setting is also included before injection and filling.
  • a segmented storage setting can be used.
  • the back pressure of the first stage of storage is 100kgf/cm 2 , the speed is 100mm/s, and the end position is 20mm;
  • the second stage of storage has a back pressure of 90kgf/cm 2 , the speed is 100mm/s, and the end position is 35mm;
  • the section back pressure is 65kgf/cm 2 , the speed is 90mm/s, and the end position is 50mm; further, the back-releasing speed is 30mm/s, and the end position is 2.35mm.
  • the injection filling pressure is 3000kgf/cm 2 -3500kgf/cm 2 , and the injection speed is 100mm/s-350mm/s. Further, the injection filling pressure is 3200kgf/cm 2 -3500kgf/cm 2 , and the injection speed is 100mm/s-350mm/s. Specifically, you can choose segmented injection filling.
  • the injection filling pressure is 3500kgf/cm 2
  • the injection filling position is divided into five stages, the injection speed of the first stage is 115mm/s, the end position is 45mm; the second stage of injection speed is 200mm/s, and the end position is 37mm ;
  • the three-stage speed of plastic injection is 300mm/s and the end position is 29mm; the four-stage speed of plastic injection is 350mm/s and the end position is 12mm; the five-stage speed of plastic injection is 310mm/s and the end position is 10.7mm.
  • the pressure of the pressure-holding molding is 500kgf/cm 2 -1250kgf/cm 2
  • the time of the pressure-holding molding is 1s-5s.
  • the first holding pressure is 1250kgf/cm 2 , the speed is 850mm/s, and the time is 0.3s; the second holding pressure is 950kgf/cm 2 and the time is 0.4s; the third holding pressure is 650kgf /cm 2 , the time is 0.5s; the four-stage holding pressure is 550kgf/cm 2 , and the time is 1s.
  • the cooling time is 10s-40s. Further, the cooling time is 11s-30s.
  • select segmented mold opening is 10s-40s.
  • the first stage speed of mold opening is 25mm/s and the end position is 5mm; the second stage speed of mold opening is 55mm/s and the end position is 200mm; the third stage speed of mold opening is 55mm/s and the end position is 340mm. Further, it also includes the delay time of the support mold advancement and the support mold withdrawal delay.
  • the first stage pressure of the pallet advance is 35kgf/cm 2 , the speed is 25mm/s, and the end position is 15mm;
  • the second stage pressure of the pallet advance delay is 35kgf/cm 2 , and the speed is 15mm/s,
  • the end position is 20mm;
  • the pressure for the retraction delay of the support mold is 40kgf/cm 2 , the speed is 25mm/s, and the end position is 0mm.
  • the plastic housing body 10 with a plurality of pointed convex structures on the surface can be manufactured by, but not limited to, the process method provided in the above-mentioned embodiment.
  • the surface microstructure of the housing 100 is shown in FIG. 2.
  • protective films can be attached to opposite sides of the plastic housing body 10 to protect the plastic housing body 10 and avoid contamination.
  • an electrostatic protection film can be attached to the outer surface of the plastic housing body 10, and a waterproof adhesive backing can be attached to the inner surface to keep the plastic housing body 10 clean.
  • FIG. 3 is a schematic structural diagram of a housing 100 according to another embodiment of the present application.
  • the housing 100 further includes a hardened layer 20, which is disposed on a side of the plastic housing body 10 with a pointed protrusion structure. surface.
  • the hardened layer 20 protects the plastic casing body 10 and improves the performance and service life of the casing 100.
  • the hardened layer 20 has a certain degree of light transmittance, so that the casing 100 can exhibit the flashing effect of the plastic casing body 10.
  • the optical transmittance of the plastic housing body 10 is greater than 85%.
  • the optical transmittance of the plastic housing body 10 is greater than 90%.
  • the thickness of the hardened layer 20 is 4 ⁇ m-30 ⁇ m. Further, the thickness of the hardened layer 20 is 4 ⁇ m-20 ⁇ m. Furthermore, the thickness of the hardened layer 20 is 4 ⁇ m-10 ⁇ m. Specifically, the thickness of the hardened layer 20 may be, but is not limited to, 4 ⁇ m, 5 ⁇ m, 8 ⁇ m, 9 ⁇ m, 12 ⁇ m, or 15 ⁇ m. In the present application, the thickness of the hardened layer 20 is not much different from the height of the pointed protrusion structure. In one embodiment, the thickness of the hardened layer 20 is less than the height of the pointed convex structure, so that the pointed convex structure can still be touched on the surface of the hardened layer 20.
  • the pointed convex structure is small, even if the pointed convex structure is touched The convex structure still presents a smoother feel, which further improves the tactile feel of the housing 100.
  • the thickness of the hardened layer 20 is less than the average height of the pointed convex structures, so that most of the pointed convex structures can be touched on the surface of the hardened layer 20.
  • the surface roughness Ra of the plastic shell body 10 with the pointed convex structure is 2.5 ⁇ m-3.5 ⁇ m, the distribution of the pointed convex structure is denser, and the surface of the hardened layer 20 will also have densely pointed convex structures.
  • the hand feel of the raised structure further presents a silk-like smooth hand feel, which improves the touch feel of the appearance of the housing 100 and is more conducive to its application.
  • the surface roughness Ra of the hardened layer 20 may be 0.4 ⁇ m-3 ⁇ m, so that the housing 100 has a silky feel. Further, the surface roughness Ra of the hardened layer 20 may be 0.5 ⁇ m-2 ⁇ m.
  • the casing 100 includes a plastic casing body 10 and a hardened layer 20.
  • the height of the pointed convex structure on the surface of the hardened layer 20 is 1 ⁇ m-23 ⁇ m, the average height Rz is 12 ⁇ m-19 ⁇ m, and the maximum height Ry is 12 ⁇ m-30 ⁇ m, the number per unit length (cm) is 13-43.
  • the surface feel of the hardened layer 20 is relatively astringent, and silky feel cannot be achieved.
  • the embodiment of the present application improves the surface feel of the existing hardened layer 20 through the coordinated arrangement of the pointed protrusion structure and the hardened layer 20, and further The texture and competitiveness of the housing 100 are improved.
  • the surface gloss of the hardened layer 20 is 16-30, and the haze is less than 55, so that the casing 100 has a better gloss effect while avoiding light reflection, so that the appearance effect of the casing 100 can be improved. Better presentation. Further, the surface gloss of the hardened layer 20 is 16-25. Furthermore, the surface gloss of the hardened layer 20 is 16-20. Specifically, the haze on the surface of the hardened layer 20 may be, but not limited to, less than 53, 52, 50, and so on.
  • the material of the hardening layer 20 includes at least one of urethane acrylate, silicone resin, and perfluoropolyether acrylate.
  • the surface of the plastic casing body 10 may be coated with a hardening liquid, and the hardening layer 20 may be formed after curing.
  • the hardening fluid can be, but not limited to, an ultraviolet light curing type hardening fluid, a heat curing type hardening fluid, or an ultraviolet light-heat dual curing type hardening fluid.
  • anti-fingerprint materials and/or anti-glare materials can be added to the hardening solution to improve the anti-fouling, anti-fingerprint adhesion, and anti-glare effects of the hardened layer 20.
  • an ultraviolet curing type hardening fluid is used, which includes a urethane acrylate and an initiator.
  • the mass ratio of the urethane acrylate to the initiator is 100:(3-10).
  • the mass ratio of the urethane acrylate to the initiator is 100:(3-8).
  • the solid content in the hardening liquid is 25%-35%.
  • the hardening liquid may also contain glass powder, which can reflect light, further enhance the flashing effect, and make the appearance effect of the housing 100 more obvious.
  • the particle size of the glass powder is 40 ⁇ m-80 ⁇ m. Further, the particle size of the glass powder is 45 ⁇ m-70 ⁇ m. Specifically, the particle size of the glass powder may be, but is not limited to, 50 ⁇ m, 55 ⁇ m, 60 ⁇ m, or 75 ⁇ m.
  • the mass content of the glass powder in the hardening liquid is 1 ⁇ -8 ⁇ . Further, the mass content of the glass powder in the hardening liquid is 2 ⁇ -5 ⁇ .
  • the mass content of the glass powder in the hardening liquid is 1 ⁇ , 3 ⁇ , 4 ⁇ , 6 ⁇ , or 7 ⁇ . Since the glass powder is prone to sedimentation in the solution, it is necessary to continuously stir the hardening liquid during the coating process to make the glass powder evenly distributed in the hardening liquid.
  • the hardening liquid can be coated on part or all of the surface of the plastic casing body 10; when the hardening liquid is coated on the entire surface of the plastic casing body 10, the entire plastic casing body 10 can be protected, which is more in line with Application needs.
  • the coating includes at least one of spray coating, dip coating, and curtain coating.
  • a spray gun with a diameter of 1mm-1.5mm can be selected for spraying, and the spraying pressure is 2 kg/cm 2 -2.5 kg/cm 2 .
  • the leveling time after coating is 5min-10min.
  • the coating thickness is 4 ⁇ m-35 ⁇ m. Further, the coating thickness is 6 ⁇ m-30 ⁇ m.
  • the coating thickness is 7 ⁇ m-25 ⁇ m.
  • the hardened layer 20 can be formed by coating and curing one or more times. In another embodiment, the curing is performed after coating with an ultraviolet curing curing liquid, wherein the UV curing energy is 550mJ-900mJ, and the time is 10s-20s. Further, the curing temperature is 50°C-60°C.
  • the performance of the housing 100 can be tested. For example, it can be baked at 80°C-85°C for 2h-3h, or in a water bath at 100°C for 30min-50min, to detect whether the shell 100 will crack and peel, etc., to ensure that the manufactured shell 100 has good performance.
  • the appearance of the housing 100 can be further changed, but not limited to, a silk-screened trademark design (Logo), and the competitiveness can be improved.
  • the ink is screen-printed on the surface of the plastic housing body 10 to form a trademark pattern after curing.
  • the plastic housing body 10 has a certain light transmittance, so that the housing 100 can present the appearance of a trademark pattern.
  • the plastic housing body 10 is pre-processed before the silk screen printing to remove dirt, dust and other impurities.
  • the ink can be but not limited to mirror silver ink.
  • the screen printing screen is 400-500 meshes, the angle is 20°-25°, the tension is 6N-9N, the screen spacing is 3mm-5mm; the squeegee hardness is 75°-80°, and the squeegee angle It is 30°-80°, the scraper speed is 150mm/sec-180mm/sec, and the pressure is 4.5bar-5.5bar.
  • curing includes baking at 50°C-80°C for 20min-60min. Further, after the silk screen, it is allowed to stand for 30-90 minutes before baking.
  • a screen printing screen with a 380 mesh, 6N tension, and an angle of 22.5°, a 35° squeegee is used to screen the mirror silver ink, and after standing for 60 minutes, it is baked at 60°C for 60 minutes.
  • FIG. 4 is a schematic diagram of the surface microstructure of the housing 100 according to an embodiment of the application.
  • the housing 100 includes a plastic housing body 10 and a hardened layer 20. Scan the surface of the hardened layer 20 through a laser microscope, and obtain a schematic diagram of the surface microstructure of the housing 100 after three-dimensional imaging. After the hardened layer 20 is formed, the pointed convex structures are still densely distributed on the surface. The convex structures are partially arranged continuously and partially arranged at intervals; the shape and size of the pointed convex structures are different, and the surface of the housing 100 forms a glittering sand texture.
  • FIG. 5 is a schematic structural diagram of a housing 100 according to another embodiment of the present application.
  • the housing 100 further includes a decorative film 30, which is disposed on the plastic housing body 10.
  • the decoration film 30 may include at least one of the UV texture layer 31, the coating layer 32, and the color layer 33, which further modifies the appearance effect of the housing 100 and enriches the appearance effect.
  • the orthographic projection of the decorative film 30 on the plastic housing body 10 can completely or partially cover the plastic housing body 10, thereby producing different appearance effects.
  • the UV texture layer 31 can make the housing 100 change the light and shadow flow, and improve the appearance expressiveness.
  • the UV texture layer 31 can be formed by coating an ultraviolet curable glue, transferring and curing.
  • a transfer mold with a target texture is provided; UV curing glue is coated on the transfer mold; the film is placed on the UV curing glue, and the transfer mold is pressed to form a UV after curing Texture layer 31.
  • it can be cured by LED lamps and/or mercury lamps. Further, the LED lamp is used for preliminary curing, and the mercury lamp is used for secondary curing to ensure that the UV curing glue is completely cured.
  • the curing energy of the LED lamp can be 1200 mJ/cm 2 -2600 mJ/cm 2
  • the curing energy of the mercury lamp can be 800 mJ/cm 2 -1500 mJ/cm 2
  • the thickness of the ultraviolet curable adhesive is 5 ⁇ m-8 ⁇ m.
  • the optical transmittance of the UV texture layer 31 is greater than 85%. Further, the optical transmittance of the UV texture layer 31 is greater than 90% to meet application requirements.
  • the thickness of the UV texture layer 31 may be 4 ⁇ m-7 ⁇ m, specifically, but not limited to 4 ⁇ m, 4.5 ⁇ m, 5 ⁇ m, 5.5 ⁇ m, 6 ⁇ m, 7 ⁇ m, etc., within this thickness range, a good texture effect can be formed If the thickness is too large, the UV texture layer 31 may have poor impact resistance and easy cracking. If the thickness is too small, the formed texture may be inconspicuous, the visual appearance of light and shadow flow may not be obvious, and the control of the preparation process may be more difficult.
  • the coating layer 32 makes the housing 100 have gloss changes at different angles, brings different textures, and enhances appearance performance.
  • the coating layer 32 can be formed but not limited to a physical vapor deposition method, such as evaporation, sputtering, ion plating, and the like.
  • the coating layer 32 can be formed by hanging a rack in a coating machine, then vacuuming and pre-processing the material, and forming the coating layer 32 by ion sputtering.
  • the coating layer 32 includes at least one of an optical film layer and a non-conductive metal layer.
  • the optical film layer presents different luster textures at different angles, which brings about changes in the color of light, and the non-conductive metal layer can bring a metallic luster texture.
  • the coating layer 32 may have a single-layer film structure or a multi-layer film structure.
  • the optical film layer is an optical medium material layer that transmits light through its interface, and can change the reflection, refraction, etc. of the light passing through the optical film layer, so that the housing 100 exhibits a certain gloss change, such as at different angles.
  • the lower part presents the visual effect of different colors and gloss.
  • the optical transmittance of the optical film layer is greater than 50%.
  • the thickness of the optical film layer is 150nm-800nm, specifically but not limited to 150nm, 180nm, 250nm, 300nm, 500nm, 600nm, 700nm, etc., too thin will cause the gloss texture effect of the optical film layer to be too weak If the thickness is too large, the stress in the film layer will be too large and easy to fall off. This thickness range is beneficial to present the visual effect of the optical film layer, while ensuring the service life of the optical film layer.
  • the material of the optical film layer may be inorganic or organic.
  • the organic substance includes at least one of polyether, polyester, fluoropolymer, and silicon-containing polymer.
  • the inorganic substance includes at least one of inorganic oxide and inorganic fluoride.
  • the material of the optical film layer includes at least one of TiO 2 , Ti 3 O 5 , NbO 2 , Nb 2 O 3 , Nb 2 O 2 , Nb 2 O 5 , Al 2 O 3 , SiO 2 and ZrO 2 .
  • the optical film layer may be a TiO 2 layer, a Ti 3 O 5 layer, a NbO 2 layer, a Nb 2 O 3 layer, a Nb 2 O 2 layer, a Nb 2 O 5 layer, a SiO 2 layer, etc., with a thickness of 150nm-500nm.
  • the optical film layer may be a TiO 2 layer, a Ti 3 O 5 layer, a NbO 2 layer, a Nb 2 O 3 layer, a Nb 2 O 3 layer, a Nb 2 O 5 layer, an Al 2 O 3 layer, or a SiO 2 layer.
  • a combination of at least two layers in the ZrO 2 layer may be a TiO 2 layer, a Ti 3 O 5 layer, a NbO 2 layer, a Nb 2 O 3 layer, a Nb 2 O 2 layer, a Nb 2 O 5 layer, an Al 2 O 3 layer, or a SiO 2 layer.
  • the side close to the plastic casing body 10 is a TiO 2 layer or SiO 2 layer with a thickness of 150 nm-500 nm
  • the side away from the plastic casing body 10 is a TiO 2 layer, Nb 2 O 5 At least one of the layer, the Al 2 O 3 layer, and the SiO 2 layer, so that the appearance of the casing 100 presents the effect of colorful gloss texture.
  • the non-conductive metal layer makes the housing 100 have metallic luster and improves the metallic texture.
  • the non-conductive metal layer is made of a metal material, and can include, but is not limited to, indium, tin, or indium-tin alloy.
  • physical vapor deposition may be used to prepare a non-conductive metal layer, which has good thickness uniformity and high density, improves the metal texture of the housing 100, and does not affect the wireless communication transmission effect when used in electronic devices.
  • an electron gun may be used to evaporate pure indium to form a non-conductive metal layer.
  • the non-conductive metal layer can be made by magnetron sputtering plating of indium tin alloy.
  • the coating time can be adjusted according to the desired appearance effect. The longer the time, the thicker the non-conductive metal layer and the brighter the metallic luster effect.
  • the thickness of the non-conductive metal layer is 5 nm-50 nm, which is beneficial to the production of the non-conductive film layer.
  • the coating layer 32 includes an optical film layer and a non-conductive metal layer, since the non-conductive metal layer has relatively low light transmittance, the optical film layer is arranged on the plastic housing body 10 and the non-conductive metal layer. In between, so that the appearance effect of each layer structure can be presented.
  • the color layer 33 is used for coloring, and provides a color appearance effect for the housing 100.
  • the color of the color layer 33 can be, but is not limited to, yellow, red, blue, green, purple, etc.; it can also be a combination of multiple colors to form a color contrast visual effect; it can also be a gradient color layer.
  • the gradation of two or more colors is achieved by arranging inks of different colors in different regions to obtain a color layer 33 with a gradual color. For example, the color difference between adjacent ink regions is less than 2, which is better. To achieve a gradual effect.
  • a color layer 33 with a color collision effect is obtained, for example, the color difference between adjacent ink areas is greater than 4, and then Better achieve the color contrast effect.
  • the color layer 33 may be a solid color layer or a transparent layer.
  • the color layer 33 can be formed by one or more processes such as coating, printing, casting, and calendering.
  • the color ink may be applied by spraying, and the color layer 33 is formed after curing.
  • curing is baking at 60°C-90°C for 20min-40min.
  • the thickness of the color layer 33 is not particularly limited.
  • the thickness of the color layer 33 may be 10 ⁇ m-20 ⁇ m, specifically but not limited to 10 ⁇ m, 12 ⁇ m, 15 ⁇ m, 18 ⁇ m, 19 ⁇ m, and the like.
  • the color layer 33 in this range not only enables the housing 100 to have a better color appearance, but at the same time does not increase the thickness of the housing 100 too much, which is beneficial to the lightness and thinness of the overall structure.
  • the first printed ceramic white background color is pre-baked at 80°C for 30 minutes; the second printed ceramic white is pre-baked at 80°C for 30 minutes, so that the housing 100 has the appearance of ceramic white, and at the same time With a flash effect.
  • FIG. 6 is a schematic structural diagram of a housing 100 provided by an embodiment of this application, in which the decorative film 30 includes a UV texture layer 31, a coating layer 32 and a color layer 33.
  • the coating layer 32 only has an optical film layer, the light transmittance is good, and the color layer 33 can be arranged on the surface of the coating layer 32 away from the plastic housing body 10, and the UV texture layer 31 It is arranged between the plastic casing body 10 and the coating layer 32; at this time, both the color layer 33 and the coating layer 32 can set off the texture effect of the UV texture layer 31, making the casing 100 more obvious and visual The effect is rich.
  • the color layer 33 may be a solid color layer or a transparent layer.
  • the color layer 33 may be disposed between the coating layer 32 and the plastic casing body 10, and the UV texture layer 31 is disposed between the color layer 33 and the plastic casing body 10.
  • the color layer 33 is a transparent layer, and the coating layer 32 may include an optical film layer or a non-conductive metal layer, and the visual effects of each layer can be presented.
  • the color layer 33 may be disposed between the coating layer 32 and the plastic housing body 10, and the UV texture layer 31 is disposed between the color layer 33 and the coating layer 32.
  • the color layer 33 is a transparent layer, so that the appearance effects of the UV texture layer 31 and the coating layer 32 can be presented, and the coating layer 32 may include an optical film layer or a non-conductive metal layer, and the visual effects of each layer can be presented.
  • the UV texture layer 31 when the decorative film 30 includes the UV texture layer 31 and the coating layer 32, the UV texture layer 31 is disposed between the plastic casing body 10 and the coating layer 32.
  • the coating layer 32 can set off the visual effect of the UV texture layer 31, and can more clearly present the appearance effect of the UV texture layer 31; at the same time, the casing 100 with the UV texture layer 31 and the coating layer 32 has a colorful The color and texture effect of light and shadow flow changes greatly enhance the appearance and expressiveness of the housing 100.
  • the decorative film 30 when the decorative film 30 includes the UV texture layer 31 and the color layer 33, the UV texture layer 31 is disposed between the plastic casing body 10 and the color layer 33.
  • the color layer 33 can set off the visual effect of the UV texture layer 31, and can more clearly present the appearance effect of the UV texture layer 31.
  • the appearance of the shell 100 with the UV texture layer 31 and the color layer 33 can be obtained. promote.
  • the decoration film 30 when the decoration film 30 includes the coating layer 32 and the color layer 33, it can be set according to the light transmittance of the coating layer 32 and the color layer 33, and the layer structure close to the plastic housing body 10 needs to have A certain light transmittance makes the appearance of the layer structure far away from the plastic casing body 10 appear.
  • the decorative film 30 is connected to the plastic housing body 10 through an adhesive, so as to be arranged on the surface of the plastic housing body 10.
  • the adhesive can be, but is not limited to, an optical glue.
  • the decoration film 30 further includes a substrate layer, and the substrate layer is provided between at least one of the UV texture layer 31, the coating layer 32, and the color layer 33 and the plastic casing body 10.
  • the substrate layer can play a role in setting off and carrying the UV texture layer 31, the coating layer 32 and the color layer 33, so that the UV texture layer 31, the coating layer 32 and the color layer 33 can be directly formed on the substrate layer, and then through the substrate layer and
  • the plastic shell body 10 is arranged in a fit manner, which is more conducive to the preparation of each layer, and can make the shell 100 have a rich appearance.
  • a single-layer or multi-layer structure can be formed on the substrate layer according to the internal layer structure of the decorative film 30 described above.
  • a UV mold can be used to transfer the texture to the substrate layer to form the UV texture layer 31; then it is placed in a coating machine to form a coating layer 32 on the surface of the UV texture layer 31; and then on the coating layer The surface of 32 is coated with color ink to form a color layer 33; finally, the substrate layer is connected to the plastic shell body 10 through optical glue, the preparation process is more convenient, the molding effect of each layer is good, and the appearance effect is good.
  • the material of the substrate layer can be, but is not limited to, at least one of polyethylene terephthalate (PET) and polyurethane (PU).
  • the thickness of the substrate layer is 50 ⁇ m-70 ⁇ m, which can play a supporting role without excessively increasing the thickness of the overall structure.
  • the backing layer is an explosion-proof film, which has excellent impact resistance, thereby improving the performance of the housing 100. At the same time, it also protects the UV texture layer 31, the coating layer 32 and the color layer 33 to a certain extent.
  • a large-sized decorative mother film can be prepared, and then punched into pieces to obtain a decorative film 30 matching the size of the plastic housing body 10, thereby improving production efficiency.
  • the above-mentioned bonding may be performed in a vacuum laminating machine to improve bonding strength, for example, but not limited to a 3D vacuum laminating machine.
  • the bonding temperature is 15°C-25°C, and the bonding time is 20s-40s, in order to achieve a better bonding effect and improve the production yield.
  • defoaming is required after bonding, including treatment at 45°C-25°C and 1.6MPa-1.8MPa for 30min-60min.
  • FIG. 7 is a schematic structural diagram of a housing 100 provided by another embodiment of the application.
  • the housing 100 includes a plastic housing body 10, a hardened layer 20, and a decorative film 30.
  • the hardened layer 20 and the decorative film 30 are disposed on the plastic
  • the hardened layer 20 is disposed on the side surface of the plastic casing body 10 with a pointed convex structure.
  • the hardened layer protects the shell 100, and at the same time superimposes the pointed convex structure to give the shell 100 a silky feel;
  • the pointed convex structure makes the shell 100 present a flash sand effect;
  • the decorative film 30 makes the shell 100
  • the body 100 presents appearances of different colors, colors, textures, etc., which greatly improves the appearance and expressiveness of the housing 100.
  • the housing 100 may further include a bottom cover, and the optical transmittance of the bottom cover is less than or equal to 1%.
  • the bottom cover can shield the internal components of the electronic device and protect the internal layer structure, and can also be used as an adhesive surface.
  • the bottom layer of the cover is disposed on a surface of the plastic housing body 10 away from the pointed protrusion structure.
  • the bottom cover is disposed on the surface of the decorative film 30 away from the plastic casing body 10.
  • the undercover ink such as black ink, gray ink, white ink, etc., can be printed on the decorative film 30 multiple times, and baked and cured.
  • the cover ink includes colored ink, curing agent, diluent and auxiliary agent.
  • the cover bottom layer is formed.
  • the baking temperature may be 65° C.-85° C.
  • the baking time may be 40 min-80 min
  • the thickness of the bottom layer formed after baking is 6 ⁇ m-10 ⁇ m.
  • the method of reciprocating coating several times can further prevent light leakage of the bottom layer of the cover.
  • titanium crystal black can be printed on the decorative film 30 and baked at 80° C. for 60 minutes to form a bottom layer.
  • the bottom layer of the cover may be formed after the decorative film 30 and connected to the plastic housing body 10 together with the decorative film 30; or after the decorative film 30 is connected to the plastic housing body 10, the decorative film 30 The bottom layer of the upper molding cover.
  • a plastic housing body 10 with a pointed convex structure is provided, so that light is reflected in the pointed convex structure, and the appearance of the housing 100 presents a flashing effect, which enriches the visual effect, avoids homogeneity, and improves the product.
  • Competitiveness is provided.
  • FIG. 8 is a schematic flow chart of a method for preparing a shell provided by an embodiment of the present application.
  • the method for preparing the shell 100 in any of the above embodiments includes:
  • Operation 101 Provide an injection mold.
  • the injection mold includes a corresponding male mold and a female mold.
  • the female mold has a plurality of recessed structures on the surface close to the male mold.
  • the laser engraving includes roughing first and then finishing.
  • the roughing parameters include 20W-50W power, 50HZ-70HZ frequency, 750mm/s-850mm/s light spot moving speed , Jump speed of 900mm/s-1200mm/s, finishing parameters include 10W-15W power, 80HZ-100HZ frequency, 900mm/s-1000mm/s light spot moving speed, 1500mm/s-2000mm/s Jump speed.
  • the area to be processed of the master mold can be partitioned to form multiple laser engraving areas to achieve more refined processing. In another embodiment, it also includes sandblasting the master mold after laser engraving.
  • the sandblasting includes using a spray gun with a caliber of 6mm-10mm and spraying 160 at an air pressure of 1 kg/cm 2 -3 kg/cm 2 Mesh -200 mesh sand.
  • the gloss of the master mold is 15-25.
  • Operation 102 Clamp the male mold and the female mold to form an injection space between the male mold and the female mold.
  • Operation 103 Inject plastic into the injection molding space, and obtain a plastic shell body through an injection molding process.
  • the surface of the plastic shell body has a plurality of pointed convex structures that match the concave structure.
  • the plastic housing body 10 can be manufactured through the processes of plastic melting, mold loading, debugging, mold clamping, injection filling, pressure holding molding, cooling, and mold opening.
  • the plastic housing body 10 is prepared by an injection compression molding process, and correspondingly, the injection mold is a compression mold. Compression injection molding can eliminate internal stress, and the obtained plastic housing body 10 has a more uniform size and good compactness. At the same time, it is beneficial to produce a thinner thickness of the plastic housing body 10, which is beneficial to its application.
  • the barrel temperature is 200°C-350°C.
  • the melting temperature of the plastic is 220°C-260°C. Further, the melting temperature of the plastic is 230°C-250°C.
  • the number of mold cavities can be selected according to needs, such as one mold with two cavities, one mold with one cavity, and so on.
  • the mold temperature of the mold is 50°C-85°C.
  • the mold temperature of the male mold is 50°C-70°C
  • the mold temperature of the female mold is 70°C-85°C.
  • the mold temperature of the male mold may be 55°C
  • the mold temperature of the female mold may be 80°C.
  • the injection filling pressure is 3000kgf/cm 2 -3500kgf/cm 2
  • the injection speed is 100mm/s-350mm/s.
  • the pressure of the pressure-holding molding is 500kgf/cm 2 -1250kgf/cm 2
  • the time of the pressure-holding molding is 1s-5s.
  • the cooling time is 10s-40s.
  • a hardening liquid on the surface of the plastic housing body 10 with a pointed convex structure, and form the hardening layer 20 after curing.
  • the hardening liquid can be, but not limited to, an ultraviolet light-curing hardening liquid, Heat curing type hardening fluid or ultraviolet light-heat dual curing type hardening fluid.
  • the coating includes at least one of spray coating, dip coating, and curtain coating. In one embodiment, the coating thickness is 6 ⁇ m-30 ⁇ m.
  • the hardened layer 20 can be formed by coating and curing one or more times.
  • the curing is performed after coating with an ultraviolet curing curing liquid, wherein the UV curing energy is 550mJ-900mJ, and the time is 10s-20s.
  • the hardening liquid may also contain glass powder, the particle size of the glass powder is 40 ⁇ m-80 ⁇ m, and the mass content of the glass powder in the hardening liquid is 1 ⁇ -8 ⁇ , which further enhances the flashing effect and makes The appearance effect of the housing 100 is more obvious.
  • the appearance of the housing 100 can be further changed, but not limited to, a silk-screened trademark design (Logo), and the competitiveness can be improved.
  • the screen printing screen is 400-500 meshes, the angle is 20°-25°, the tension is 6N-9N, the screen spacing is 3mm-5mm; the squeegee hardness is 75°-80°, and the squeegee angle It is 30°-80°, the scraper speed is 150mm/sec-180mm/sec, and the pressure is 4.5bar-5.5bar.
  • curing includes baking at 50°C-80°C for 20min-60min. Further, after the silk screen, it is allowed to stand for 30-90 minutes before baking.
  • a decorative film 30 can also be formed on the surface of the plastic housing body 10 facing away from the pointed convex structure.
  • the decorative film 30 includes at least one of the UV texture layer 31, the coating layer 32, and the color layer 33. layer.
  • the UV texture layer 31 may be presented, but not limited to, by means of UV curable glue transfer.
  • a transfer mold with a target texture is provided; UV curing glue is coated on the transfer mold; the film is placed on the UV curing glue, and the transfer mold is pressed to form a UV after curing Texture layer 31.
  • it can be cured by LED lamps and/or mercury lamps. Further, the LED lamp is used for preliminary curing, and the mercury lamp is used for secondary curing to ensure that the UV curing glue is completely cured.
  • the curing energy of the LED lamp can be 1200 mJ/cm 2 -2600 mJ/cm 2
  • the curing energy of the mercury lamp can be 800 mJ/cm 2 -1500 mJ/cm 2 .
  • the coating layer 32 can be formed but not limited to a physical vapor deposition method, such as evaporation, sputtering, ion plating, and the like.
  • the coating layer 32 includes at least one of an optical film layer and a non-conductive metal layer.
  • the coating layer 32 can be formed by hanging a rack in a coating machine, then vacuuming and pre-treating the material, and forming the coating layer 32 by ion sputtering.
  • the color layer 33 can be formed but not limited to one or more processes such as coating, printing, casting, and calendering.
  • the color ink may be applied by spraying, and the color layer 33 is formed after curing.
  • curing is baking at 60°C-90°C for 20min-40min.
  • the decoration film 30 further includes a substrate layer, and the substrate layer is provided between at least one of the UV texture layer 31, the coating layer 32, and the color layer 33 and the plastic casing body 10.
  • the substrate layer is provided between at least one of the UV texture layer 31, the coating layer 32, and the color layer 33 and the plastic casing body 10.
  • a single-layer or multi-layer structure can be formed on the substrate layer according to the internal layer structure of the decorative film 30 described above.
  • a UV mold can be used to transfer the texture to the substrate layer to form the UV texture layer 31; then it is placed in a coating machine to form a coating layer 32 on the surface of the UV texture layer 31; and then on the coating layer The surface of 32 is coated with color ink to form a color layer 33; finally, the substrate layer is connected to the plastic shell body through optical glue, the preparation process is more convenient, the molding effect of each layer is good, and the appearance effect is good.
  • the bottom cover ink can also be printed on the surface of the plastic housing body 10 away from the pointed convex structure to form a bottom cover, and the optical transmittance of the bottom cover is less than or equal to 1%.
  • the bottom cover can shield the internal components of the electronic device and protect the internal layer structure, and can also be used as a bonding surface.
  • the bottom cover ink includes colored ink, curing agent, diluent and auxiliary agent, and forms the bottom cover layer after baking.
  • the baking temperature can be 65°C-85°C
  • the baking time can be 40min-80min.
  • CNC machining can mill off excess leftover material, and process the shape and required through holes, etc., to obtain the final desired appearance of the shell.
  • precision engraving machine processing is used to ensure the accuracy of the size, and the processing accuracy is within ⁇ 8 ⁇ M, so as to obtain a relatively high-quality housing.
  • CNC precision engraving machining parameters are: spindle speed 45000 rpm/min-55000 rpm, feed speed 1500mm/min-4000mm/min; this process not only improves the product yield, but also guarantees Processing efficiency.
  • the preparation method of the shell provided in the present application is simple to operate, easy to mass-produce, can have a shell with a flashing appearance effect, has enhanced appearance variability, avoids homogeneity, and is beneficial to its application.
  • the present application also provides an electronic device, including the housing 100 in any of the foregoing embodiments. It is understandable that electronic devices can be, but are not limited to, mobile phones, tablet computers, notebook computers, watches, MP3, MP4, GPS navigators, digital cameras, etc. Let's take a mobile phone as an example for description.
  • FIG. 9 is a schematic structural diagram of an electronic device provided by an embodiment of this application.
  • the electronic device includes a display screen 200, and a cover 300 and a housing 100 disposed on opposite sides of the display screen 200.
  • the housing 100 includes a plastic shell.
  • the surface of the main body 10 and the plastic casing main body 10 has a plurality of pointed protrusion structures.
  • the housing 100 has an inner surface and an outer surface that are opposed to each other, wherein the inner surface and the outer surface are based on the use state of the housing 100 as a reference.
  • the casing 100 is applied to an electronic device, and the side facing the inside of the electronic device is the inner surface, and the side facing the outside of the electronic device is the outer surface.
  • the pointed convex structure is arranged on the outer surface of the plastic housing body 10, so that the appearance of the electronic device has a glittery sand texture, presents a sparkling visual effect, and improves product competitiveness.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

本申请提供了一种壳体，包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。光线可以在塑胶壳体本体表面的尖状凸起结构上发生反射，产生闪光效果，使得壳体呈现多处闪闪发光的视觉效果，丰富了壳体的外观，避免了同质化。本申请还提供了壳体的制备方法以及包括壳体的电子设备。

Description

壳体、壳体的制备方法及电子设备 技术领域
本申请属于电子产品技术领域，具体涉及壳体、壳体的制备方法及电子设备。
背景技术
随着电子技术的不断发展，电子设备也越来越多。为提升电子设备竞争力，其外观效果的变动也越发受到重视。相关技术中，通过改变电子设备的色彩、形状等，改善其外观效果。然而，这些变动越来越少，电子设备的外观效果逐渐单一，同质化现象严重。
发明内容
鉴于此，本申请提供了一种壳体、壳体的制备方法及电子设备，该壳体呈现多处闪闪发光的视觉效果，丰富了壳体的外观，提升电子设备外观竞争力，避免同质化，更有利于其应用。
第一方面，本申请提供了一种壳体，包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
第二方面，本申请提供了一种壳体的制备方法，包括：
提供注塑模具，所述注塑模具包括对应设置的公模和母模，所述母模靠近所述公模的表面具有多个凹陷结构；
将所述公模和所述母模合模，所述公模和所述母模之间形成注塑空间；
将塑胶注入所述注塑空间中，经注塑成型工艺得到塑胶壳体本体，所述塑胶壳体本体的表面具有多个与所述凹陷结构相匹配的尖状凸起结构。
第三方面，本申请提供了一种电子设备，包括显示屏，以及设置在所述显示屏相对两侧的盖板和壳体，所述壳体包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
附图说明
为了更清楚地说明本申请实施方式中的技术方案，下面将对本申请实施方式中所需要使用的附图进行说明。
图1为本申请一实施方式提供的壳体的结构示意图。
图2为本申请一实施方式提供的壳体的表面微观结构示意图。
图3为本申请另一实施方式提供的壳体的结构示意图。
图4为本申请另一实施方式提供的壳体的表面微观结构示意图。
图5为本申请另一实施方式提供的壳体的结构示意图。
图6为本申请另一实施方式提供的壳体的结构示意图。
图7为本申请另一实施方式提供的壳体的结构示意图。
图8为本申请一实施方式提供的壳体的制备方法的流程示意图。
图9为本申请一实施方式提供的电子设备的结构示意图。
标号说明：
塑胶壳体本体-10，硬化层-20，装饰膜-30，UV纹理层-31，镀膜层-32，颜色层-33，壳体-100，显示屏-200，盖板-300。
具体实施方式
以下是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
本申请实施例提供了一种壳体，包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
其中，所述塑胶壳体本体具有所述尖状凸起结构的表面的粗糙度Ra为2.5μm-3.5μm。
其中，所述尖状凸起结构为微米级结构，所述尖状凸起结构的高度为14μm-30μm，所述尖状凸起结构的分布密度为500个/cm 2-2000个/cm 2。
其中，所述尖状凸起结构的平均高度Rz为15μm-25μm；所述尖状凸起结构的最大高度Ry为19μm-30μm；所述尖状凸起结构的横向尺寸为80μm-120μm。
其中，所述塑胶壳体本体具有所述尖状凸起结构的表面光泽度为17-24。
其中，所述尖状凸起结构包括棱锥结构、类棱锥结构和圆锥结构中的至少一种。
其中，所述塑胶壳体本体经注塑成型。
其中，所述壳体还包括硬化层，所述硬化层设置在所述塑胶壳体本体具有所述尖状凸起结构的一侧表面。
其中，所述硬化层的厚度为4μm-30μm。
其中，所述硬化层中具有玻璃粉，所述玻璃粉的粒径为40μm-80μm。
其中，所述壳体还包括装饰膜，所述装饰膜设置在所述塑胶壳体本体背向所述尖状凸起结构的一侧表面，所述装饰膜包括UV纹理层、镀膜层和颜色层中的至少一层。
其中，所述装饰膜还包括衬底层，所述衬底层设置在所述UV纹理层、镀膜层和颜色层中的至少一层，与所述塑胶壳体本体之间。
本申请实施例还提供了一种壳体的制备方法，包括：
提供注塑模具，所述注塑模具包括对应设置的公模和母模，所述母模靠近所述公模的表面具有多个凹陷结构；
将所述公模和所述母模合模，所述公模和所述母模之间形成注塑空间；
将塑胶注入所述注塑空间中，经注塑成型工艺得到塑胶壳体本体，所述塑胶壳体本体的表面具有多个与所述凹陷结构相匹配的尖状凸起结构。
其中，通过镭雕在所述母模的表面成型所述凹陷结构，所述镭雕的参数包括10W-50W的功率、50HZ-100HZ的频率、170mm-180mm的焦距、0.10mm-0.12mm的线宽、750mm/s-1000mm/s的光点移动速度、900mm/s-2000mm/s的跳转速度。
其中，所述镭雕包括先进行粗加工，再进行精加工，其中，所述粗加工的参数包括20W-50W的功率、50HZ-70HZ的频率、750mm/s-850mm/s的光点移动速度、900mm/s-1200mm/s的跳转速度，所述精加工的参数包括10W-15W的功率、80HZ-100HZ的频率、900mm/s-1000mm/s的光点移动速度、1500mm/s-2000mm/s的跳转速度。
其中，还包括对所述镭雕后的所述母模进行喷砂处理，所述喷砂包括采用6mm-10mm口径的喷枪，在1公斤/cm 2-3公斤/cm 2喷枪气压下，喷涂160目-200目的砂粒。
其中，经所述喷砂后，所述母模的光泽度为15-25。
其中，所述制备方法还包括：在所述塑胶壳体本体具有所述尖状凸起结构的表面涂覆硬化液，经固化后形成硬化层。
其中，所述制备方法还包括：在所述塑胶壳体本体背向所述尖状凸起结构的一侧表面成型装饰膜，所述装饰膜包括UV纹理层、镀膜层和颜色层中的至少一层。
本申请实施例还提供了一种电子设备，包括显示屏，以及设置在所述显示屏相对两侧的盖板和壳体，所述壳体包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
请参考图1，为本申请一实施方式提供的壳体100的结构示意图，包括塑胶壳体本体10，塑胶壳体本体10的表面具有多个尖状凸起结构。
相关技术中，通过改变色彩、形状来改善外观效果的电子设备越来越多，电子设备外观的相似程度也越来越高，产品竞争力没有得到大幅度提升；还有一些通过设置拉丝纹、CD纹、仿牛皮纹、火花纹来改变电子设备的外观，但是这些纹理效果单一，仍需要改变和丰富电子产品的外观效果。在本申请中，提供具有尖状凸起结构的塑胶壳体本体10，该尖状凸起结构能够对光线进行反射，每一个尖状凸起结构都像钻石一样闪闪发光，从而使得壳体100的外观呈现闪光效果，丰富壳体100的外观效果，避免同质化，同时还可以大幅度提升壳体100的外观竞争力，有利于壳体100的广泛使用。
在本申请中，塑胶壳体本体10的表面具有多个尖状凸起结构，赋予了壳体100闪闪发光的视觉效果。在本申请一实施方式中，当壳体100只包括塑胶壳体本体10时，对塑胶壳体本体10的透光程度不作限定，此时，塑胶壳体本体10可以为无色透明，也可以是有色透明，还可以为实色。在本申请另一实施方式中，当壳体100除了包括塑胶壳体本体10，还包括装饰膜30等其他结构时，为了呈现其他结构的外观效果，此时，塑胶壳体本体10具有一定的透光性。可选的，塑胶壳体本体10的光学透过率大于90％。进一步的，塑胶壳体本体10的光学透过率大于92％。其中，光学透过率为在380nm-780nm波段下光线的透 过率。
在本申请实施方式中，塑胶壳体本体10的材质可以但不限于为任何已知的用于制备壳体的塑胶。在一实施例中，塑胶壳体本体10的材质可以但不限于为任何已知的可以用于注塑的材料。可选的，塑胶壳体本体10的材质包括聚碳酸酯、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯和透明尼龙中的至少一种。在一具体实施例中，塑胶壳体本体10的材质包括聚碳酸酯和聚甲基丙烯酸甲酯中的至少一种，使得塑胶壳体本体10的机械性能和通透性较好，提高壳体100的性能。在另一实施例中，可以选择光学级的塑胶，以达到所需的光学透过率要求。
在本申请中，对塑胶壳体本体10的形状和尺寸不作限定，可以根据实际需要进行选择和设计，例如塑胶壳体本体10可以但不限于作为电子设备的后壳和/或中框，其形状可以为2D形状、2.5D形状或3D形状。在一实施例中，塑胶壳体本体10可以通过注塑成型加工所需的形状，2.5D形状或3D形状的塑胶壳体本体10使得壳体100更具有立体感，触感更顺滑。在另一实施例中，塑胶壳体本体10的厚度为0.05mm-1mm，具体的可以但不限于为0.05mm、0.1mm、0.2mm、0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1mm等，以满足壳体100抗冲击力的要求，并且不至于过厚，符合轻薄化的需求。
在本申请实施方式中，塑胶壳体本体10表面上的多个尖状凸起结构属于塑胶壳体本体10的一部分，可以一体成型制得。尖状凸起结构对光线进行反射，实现闪光效果，多个尖状凸起结构使得壳体100呈现闪光砂纹理。
在本申请实施方式中，尖状凸起结构为微米级结构，此时，尖状凸起结构对光线进行反射，使得壳体100外观呈现星星点点的闪光效果，细腻感增强。在一实施例中，尖状凸起结构的高度为14μm-30μm。进一步的，尖状凸起结构的高度为15μm-25μm。更进一步的，尖状凸起结构的高度为17μm-21μm。具体的，尖状凸起结构的高度可以但不限于为14μm、16μm、18μm、20μm、22μm、23μm、26μm或28μm。在本申请中，尖状凸起结构的高度可以但不限于通过在显微镜下，激光扫描后读取塑胶壳体本体10具有尖状凸起结构的表面纹理特征后计算得到。可选的，尖状凸起结构的平均高度Rz为15μm-25μm。可以理解的，Rz为微观不平度十点高度。进一步的，尖状凸起结构的平均高度Rz为20μm-24μm。可选的，尖状凸起结构的最大高度Ry为19μm-30μm。可以理解的，Ry为轮廓最大高度。进一步的，尖状凸起结构的最大高度Ry为22μm-28μm。在另一实施例中，尖状凸起结构的横向尺寸为80μm-120μm。进一步的，尖状凸起结构的横向尺寸为90μm-110μm。具体的，尖状凸起结构的横向尺寸可以但不限于为85μm、95μm、100μm、105μm或115μm。其中，横向尺寸表示了在塑胶壳体本体10表面，与尖状凸起结构的高度方向相互垂直的方向上尺寸。
可以理解的，尖状凸起结构可以是规则形状的凸起结构，也可以为不规则形状的凸起结构。在本申请实施方式中，尖状凸起结构可以是具有多个侧面，不同侧面之间具有夹角，形成尖状结构；也可以是具有曲面侧面。在一实施例中，尖状凸起结构包括棱锥结构、类棱锥结构和圆锥结构中的至少一种。具体的，尖状凸起结构可以但不限于为三棱锥、四棱 锥、三类棱锥、四类棱锥、圆锥等。可以理解的，棱锥结构和类棱锥结构均具有尖部，棱锥结构的侧面为棱切面，与棱锥结构不同的是，类棱锥结构的尖部可以是平面，也可以是曲面，例如类棱锥结构可以包括棱台。尖状凸起结构为棱锥结构或圆锥结构时，部分反射光由侧面反射出去，部分反射光由尖部反射出去；尖状凸起结构为类棱锥结构时，尖部反射光相对增加；反射光线后使得尖状凸起结构具有闪闪发光的效果。在一实施例中，尖状凸起结构为棱锥结构或圆锥结构时，光线入射角度改变过程中，反射后的光线角度变化更加明显，使得在不同角度下闪闪发光效果显著。在另一实施例中，类棱锥结构的尖部为曲面时，曲率半径可以为0.1μm-3μm；具体的，曲率半径可以但不限于为0.1μm、0.5μm、1μm、2μm或3μm，以实现不同程度的反光效果。
在本申请中，每个尖状凸起结构的尺寸、形状可以相同，也可以不同。在一实施例中，多个尖状凸起结构的高度、横向尺寸、形状中至少有一个参数不同，以使得在不同角度下壳体100可以呈现明显的闪烁效果，提升外观表现力。
在本申请中，多个尖状凸起结构可以为连续设置的，也可以为间隔设置的，还可以部分连续设置，部分间隔设置。连续设置的尖状凸起结构可以呈现连续的闪光点，闪光效果更加集中；间隔设置的尖状凸起结构可以使得闪光点分散，每一个尖状凸起结构在不同角度下的闪光效果都能较好的呈现出来。在一实施例中，多个尖状凸起结构可以在塑胶壳体本体10表面呈规则排布，呈现均匀分散的闪光效果。在另一实施例中，多个尖状凸起结构在塑胶壳体本体10表面呈不规则排布，更符合实际星光闪闪的效果，可实现性高。在本申请实施方式中，多个尖状凸起结构形成簇单元。也就是说，簇单元中包括了多个尖状凸起结构，塑胶壳体本体10表面具有多个簇单元。簇单元中的每个尖状凸起结构的形状、尺寸可以相同，也可以不同；每个簇单元的形状、尺寸可以相同，也可以不同。此时，光线在簇单元表面进行反射，其中簇单元中的每个尖状凸起结构对光线进行反射，呈现发光点，同时在不同角度下每个尖状凸起结构对光线的反射角度发生变化，使得簇单元的发光产生闪烁变化，呈现更加明显的闪光效果。可选的，簇单元为微米级结构。簇单元在塑胶壳体本体10表面可以间隔分布，也可以连续分布。
在本申请实施方式中，塑胶壳体本体10具有尖状凸起结构的表面的粗糙度Ra为2.5μm-3.5μm，以改善塑胶壳体本体10上尖状凸起结构分布情况，使得壳体100的闪光效果更加明显和密集；同时尖状凸起结构在塑胶壳体本体10较为密集的分布，进而营造出了爽滑的触感。在一实施例中，尖状凸起结构的分布密度为500个/cm 2-2000个/cm 2，以实现繁星点点的效果。进一步的，尖状凸起结构的分布密度为700个/cm 2-1900个/cm 2。更进一步的，尖状凸起结构的分布密度为800个/cm 2-1800个/cm 2，呈现更加密集、细微的闪光砂效果。具体的，尖状凸起结构的分布密度可以但不限于为800个/cm 2-1000个/cm 2、1000个/cm 2-1150个/cm 2、1200个/cm 2-1300/cm 2或1600个/cm 2-1850/cm 2。在另一实施例中，尖状凸起结构在单位长度(cm)内的数量为25个-45个。进一步的，尖状凸起结构在单位长度(cm)内的数量为27个-43个，可以呈现较为明显、密集的闪光砂效果。在本申请中，上述密度的尖状凸起结构避免了大面积的反光或者大面积的雾面等非闪光效果的出现，保证 了在壳体100表面呈现出密集、细微且丰富的闪光砂效果。
在本申请中，采用三丰粗糙度仪SJ-310(精度1μm)对塑胶壳体本体10具有尖状凸起结构的表面的粗糙度Ra、尖状凸起结构的平均高度Rz、尖状凸起结构的最大高度Ry、尖状凸起结构在单位长度(cm)内的数量进行测量。在一实施例中，将粗糙度仪置于塑胶壳体本体10具有尖状凸起结构的表面，粗糙度仪开始工作后即可检测并显示上述参数的数值。可以理解的，还可以采用其他可行的仪器对上述参数进行检测。
在本申请实施方式中，塑胶壳体本体10具有尖状凸起结构的表面光泽度为17-24。该塑胶壳体本体10的表面具有优异的光泽效果，能够呈现塑胶壳体本体10的外观效果，同时光泽度不会过高，进而避免反光现象。进一步的，塑胶壳体本体10具有尖状凸起结构的表面光泽度为18-23。在本申请中，采用科仕佳光泽度计MG6-F1(精度1度)进行测定。在一实施例中，将光泽度计置于塑胶壳体本体10具有尖状凸起结构的表面，光泽度计开始工作后即可检测并显示塑胶壳体本体10的表面光泽度。可以理解的，还可以采用其他可行的仪器对上述参数进行检测。
请参阅图2，为本申请一实施方式提供的壳体100的表面微观结构示意图，通过激光显微镜对塑胶壳体本体10的表面进行扫描，经三维成像后得到壳体100的表面微观结构示意图，其中，尖状凸起结构较为密集的分布在表面，尖状凸起结构部分连续设置，部分间隔设置；尖状凸起结构的形状和尺寸不同；尖状凸起结构对光线进行反射，使得壳体100表面形成星星闪闪的效果，实现闪光砂纹理。
在本申请中，塑胶壳体本体10可以通过注塑成型。在本申请一实施方式中，塑胶壳体本体10的注塑成型包括：提供注塑模具，注塑模具包括对应设置的公模和母模，母模靠近公模的表面具有多个凹陷结构，凹陷结构与尖状凸起结构相匹配；将公模和母模合模，公模和母模之间形成注塑空间；将塑胶注入注塑空间中，经注塑成型工艺得到塑胶壳体本体10。其中，公模还可以称之为后模、动模、凸模、下模或阳模，母模也可以称之为前模、定模、凹模、上模或阴模。
为了使塑胶壳体本体10的表面具有多个尖状凸起结构，相应的，需要在母模靠近公模的表面成型多个凹陷结构，凹陷结构与尖状凸起结构相匹配。在本申请一实施例中，可以但不限于通过镭雕工艺在母模的表面成型凹陷结构。由于尖状凸起结构微小，相应的凹陷结构也需要足够的精细，通过激光镭雕工艺可以精细化的控制凹陷结构的成型，以使得在塑胶壳体本体10表面形成所需的尖状凸起结构，实现闪光效果；同时采用镭雕工艺可以使得母模上的凹陷结构尺寸、分布可控。具体的，可以但不限于利用瑞士夏米尔(GF)的五轴镭雕机进行镭雕。在本申请另一实施例中，将母模至于镭雕机中成型凹陷结构。凹陷结构的尺寸、分布密度、形状等可以根据实际需要的尖状凸起结构的尺寸进行相应设置。
在本申请中，在镭雕前可以对提供的模具进行检查，避免存在损伤，影响最终成型的凹陷结构的效果；还可以将模具静置，使得模具与外界环境的温度差异小，有利于对其进行镭雕处理。
在本申请中，通过镭雕在母模的表面成型凹陷结构，镭雕参数可以根据需要进行选择。 可选的，镭雕功率可以为10W-50W，频率可以为50HZ-100HZ、焦距可以为170mm-180mm、光点移动速度可以为750mm/s-1000mm/s、跳转速度可以为900mm/s-2000mm/s。在镭雕过程中，功率过小，加工速度较慢，加工效率低；功率过大，加工速度快，母模表面受热严重；频率过小，镭雕效果不明显；频率过高，母模表面受热严重；光点移动速度过慢，母模表面受热严重；光点移动速度过快，镭雕效果受到影响；跳转速度过慢，镭雕效果受到影响。采用上述镭雕参数进行镭雕时，可以具有高效的工作效率并获得较好的镭雕效果。可选的，镭雕的温度为1200℃-1600℃，以避免对母模的表面造成过度的损伤。在本申请另一实施例中，为了进一步提高镭雕的加工精度，可以设置线宽为0.10mm-0.12mm。进一步的，当需要进行多层镭雕成型时，单层最小切削量可以为0.1μm-0.3μm，加大镭雕精度。
在本申请一实施例中，镭雕可以包括粗加工和精加工，可以先进行粗加工，再进行精加工，提升镭雕速度和镭雕精度。可选的，粗加工的参数包括20W-50W的功率、50HZ-70HZ的频率、750mm/s-850mm/s的光点移动速度、900mm/s-1200mm/s的跳转速度；精加工的参数包括10W-15W的功率、80HZ-100HZ的频率、900mm/s-1000mm/s的光点移动速度、1500mm/s-2000mm/s的跳转速度。例如，保持180mm的焦距、0.12mm的线宽，粗加工在20W的功率、60HZ的频率、800mm/s的光点移动速度以及1000mm/s的跳转速度下进行，然后进行精加工，精加工在15W的功率、100HZ的频率、1000mm/s的光点移动速度以及2000mm/s的跳转速度下进行，在母模上形成凹陷结构。采用上述工艺，可以使得在镭雕初期可以加快工作速度和效率，再在后期加强精细化程度，得到较佳的镭雕效果。
在本申请实施方式中，为了更好地成型凹陷结构，可以对母模待处理区域进行分区，形成多个镭雕区域，实现更加精细化处理。可选的，多个镭雕区域之间错位叠加，从而使得镭雕区域的拐角区域小，平面区域大。在一实施例中，将母模待处理区域分成多个镭雕区域，镭雕区域的大小为(1mm-10mm)×(1mm-10mm)。在本申请另一实施方式中，可以通过多层镭雕处理形成凹陷结构。也就是说，通过分层镭雕成型凹陷结构。在一实施例中，每层镭雕的深度为1μm-2μm。具体的，每层镭雕的深度可以但不限于为1μm、1.1μm、1.15μm、1.3μm、1.5μm、1.65μm、1.7μm、1.8μm、1.9μm或2μm。在本申请又一实施方式中，可以在母模上先成型第一凹陷子结构后，在第一凹陷子结构上继续成型第二凹陷子结构，最终得到凹陷结构。可以理解的，不同凹陷子结构之间的尺寸、形状、分布密度以及位置等至少有一个参数不同。进一步的，还可以继续叠加其他凹陷子结构后，得到凹陷结构。
在本申请一实施例中，通过对母模待处理的区域进行分区镭雕，每一镭雕区域先后进行粗加工和精加工，形成多个第一凹陷子结构；再此基础上，通过再通过粗加工和精加工，形成多个第二凹陷子结构，进而得到所需的凹陷结构。在一具体实施例中，通过对母模待处理的区域进行分区镭雕，每一镭雕区域先后进行粗加工和精加工，形成多个第一凹陷子结构，其中，保持180mm的焦距、0.12mm的线宽，在20W的功率、60HZ的频率、800mm/s的光点移动速度以及1000mm/s的跳转速度下进行粗加工，在15W的功率、100HZ的频率、1000mm/s的光点移动速度以及2000mm/s的跳转速度下进行精加工，粗加工10层，精加工 3层，每层的深度为1.15μm；然后按照上述相同的工艺参数进行粗加工和精加工，形成多个第二凹陷子结构，进而在母模上成型多个凹陷结构。
在本申请实施方式中，镭雕后的母模表面粗糙度Ra为4μm-5μm，凹陷结构的深度为25μm-40μm，平均深度Rz为15μm-25μm，最大深度Ry为28μm-40μm，以利于成型所需的塑胶壳体，实现闪光效果。进一步的，镭雕后的母模表面粗糙度Ra为4.5μm-4.9μm，凹陷结构的深度为30μm-36μm，平均深度Rz为28μm-32μm，最大深度Ry为30μm-36μm。在一实施例中，镭雕后的母模表面的凹陷结构分布密度为900个/cm 2-2500个/cm 2，凹陷结构在单位长度(cm)内的数量为30个-50个，以实现较为明显且密集的闪光砂效果。进一步的，凹陷结构在单位长度(cm)内的数量可以但不限于为42个-48个、44个-46个等。在本申请中，镭雕后母模的洛氏硬度(HRC)为50-70。进一步的，镭雕后母模的洛氏硬度为55-65。具体的，镭雕后母模的洛氏硬度可以但不限于为50、60、65、70等。镭雕后的母模仍然具有较高的硬度，保证其良好的力学性能，有利于后续注塑工艺的进行。
在本申请实施方式中，还可以对镭雕的母模进行喷砂处理。喷砂通过高速砂流的冲击作用清理母模的表面，由于砂粒对母模表面的冲击和切削作用，使母模的表面具有一定的清洁度和光泽度。在本申请一实施例中，喷砂可以采用6mm-10mm口径的喷枪，在1公斤/cm 2-3公斤/cm 2喷枪气压下，喷涂160目-200目的砂粒，使母模的表面性能得到很好的改善。可选的，经喷砂后，母模的光泽度为15-25。可选的，砂粒包括锆砂、玻璃珠和钢珠中的至少一种。可选的，经喷砂后，母模表面粗糙度Ra为2.8μm-3.2μm，凹陷结构的深度为12μm-32μm，平均深度Rz为14μm-26μm，最大深度Ry为19μm-30μm，在单位长度(cm)内的数量为25个-45个，有利于制备塑胶壳体本体10。进一步的，凹陷结构的深度为14μm-30μm，平均深度Rz为15μm-25μm，最大深度Ry为22μm-30μm，在单位长度(cm)内的数量为27个-43个。在一实施例中，喷砂采用8mm口径的喷枪，在2公斤/cm 2喷枪气压下，喷涂180目的玻璃珠，喷砂后母模的光泽度为17，具有优异的表面性能。
在本申请中，可以采用上述的注塑模具制备塑胶壳体本体10。其中，塑胶可以但不限于任何已知的能够用于注塑的材料。可选的，塑胶包括聚碳酸酯、聚甲基丙烯酸甲酯、聚对苯二甲酸乙二醇酯、透明尼龙中的至少一种。为了提高塑胶壳体本体10的性能，可以选择性能提高的塑胶，例如可以但不限于为加硬聚碳酸酯等。在一实施例中，在塑胶注入注塑空间之前可以先将塑胶进行干燥。可选的，塑胶在80℃-120℃干燥3h-8h，去除水分，有利于后续的注塑成型。进一步的，塑胶在100℃-120℃干燥4h-6h，使得塑胶中水分含量不超过0.05％。具体的，可以但不限于选择除湿式干燥机或热风式干燥机。
在本申请实施方式中，可以通过塑胶熔融、上模、调试、合模、射胶填充、保压成型、冷却和开模工艺制得塑胶壳体本体10。在本申请另一实施方式中，提供的注塑模具为压缩模。在一实施例中，压缩模除了包括公模和母模，还可以包括定位环、浇口套、拼块、压缩弹簧、上顶针板、下顶针板、公模板、母模板、承板、模脚、上固定板和下固定板等。具体的，可以但不限于使用住友全电动注塑机。压缩注塑成型可以消除内应力，制得的塑胶壳体本体10尺寸更加均匀，致密性良好，同时有利于制得较薄厚度的塑胶壳体本体10， 有利于其应用。
在本申请实施方式中，可以但不限于采用如下注塑参数以得到性能优异、厚度均匀且较薄的塑胶壳体本体10。在一实施例中，料筒温度为200℃-350℃。例如，料筒温度一段为350℃，二段355℃，三段355℃，四段330℃，五段315℃。可选的，塑胶熔融的温度为220℃-260℃。进一步的，塑胶熔融的温度为230℃-250℃。在注塑时，模具穴数可以根据需要进行选择，例如一模两穴、一模一穴等。可选的，模具的模温为50℃-85℃。进一步的，公模的模温为50℃-70℃，母模的模温为70℃-85℃。例如，公模的模温可以为55℃，母模的模温可以为80℃。在一实施例中，锁模力为150T-180T。具体的，可以进行分段锁模。例如，锁模一段压力为30kgf/cm 2，速度为50mm/s，终止位置为200mm；锁模二段压力为30kgf/cm 2，速度为40mm/s，终止位置为100mm。在射胶填充之前还包括储料设定。具体的，可以采用分段储料设定。例如，储料一段背压为100kgf/cm 2，速度为100mm/s，终止位置为20mm；储料二段背压为90kgf/cm 2，速度为100mm/s，终止位置为35mm；储料三段背压为65kgf/cm 2，速度为90mm/s，终止位置为50mm；进一步的，后松退的速度为30mm/s，终止位置为2.35mm。可选的，射胶填充的压力为3000kgf/cm 2-3500kgf/cm 2，注射速度为100mm/s-350mm/s。进一步的，射胶填充的压力为3200kgf/cm 2-3500kgf/cm 2，注射速度为100mm/s-350mm/s。具体的，可以选择分段射胶填充。例如，射胶填充的压力为3500kgf/cm 2，射胶填充的位置分五段，射胶一段速度为115mm/s，终止位置为45mm；射胶二段速度为200mm/s，终止位置为37mm；射胶三段速度为300mm/s，终止位置为29mm；射胶四段速度为350mm/s，终止位置为12mm；射胶五段速度为310mm/s，终止位置为10.7mm。可选的，保压成型的压力为500kgf/cm 2-1250kgf/cm 2，保压成型的时间为1s-5s。具体的，可以选择分段保压。例如，可以采用四段保压，保压一段压力1250kgf/cm 2，速度为850mm/s，时间为0.3s；保压二段压力950kgf/cm 2，时间为0.4s；保压三段压力650kgf/cm 2，时间为0.5s；保压四段压力550kgf/cm 2，时间为1s。可选的，冷却时间为10s-40s。进一步的，冷却时间为11s-30s。可选的，选择分段开模。例如，开模一段速度为25mm/s，终止位置为5mm；开模二段速度为55mm/s，终止位置为200mm；开模三段速度为55mm/s，终止位置为340mm。进一步的，还包括托模进延时和托模退延时。在一实施例中，托模进延时一段压力为35kgf/cm 2，速度为25mm/s，终止位置为15mm；托模进延时二段压力为35kgf/cm 2，速度为15mm/s，终止位置为20mm；托模退延时的压力为40kgf/cm 2，速度为25mm/s，终止位置为0mm。
在本申请中，可以但不限于通过上述实施例提供的工艺方法制得表面具有多个尖状凸起结构塑胶壳体本体10。在一实施例中，壳体100表面微观结构如图2所示。在本申请实施方式中，通过注塑工艺制得塑胶壳体本体10后，可以在塑胶壳体本体10的相对两侧表面贴合保护膜，对塑胶壳体本体10进行保护，避免污染。具体的，可以在塑胶壳体本体10的外表面贴合静电保护膜，在内表面贴合防水背胶，使塑胶壳体本体10保持清洁。
请参阅图3，为本申请另一实施方式提供壳体100的结构示意图，其中，壳体100还包括硬化层20，硬化层20设置在塑胶壳体本体10具有尖状凸起结构的一侧表面。硬化层 20对塑胶壳体本体10起到保护作用，提高壳体100的性能和使用寿命。硬化层20具有一定的透光性，使得壳体100可以呈现塑胶壳体本体10的闪光效果。可选的，塑胶壳体本体10的光学透过率大于85％。进一步的，塑胶壳体本体10的光学透过率大于90％。
在本申请实施方式中，硬化层20的厚度为4μm-30μm。进一步的，硬化层20的厚度为4μm-20μm。更进一步的，硬化层20的厚度为4μm-10μm。具体的，硬化层20的厚度可以但不限于为4μm、5μm、8μm、9μm、12μm或15μm。在本申请中，硬化层20的厚度与尖状凸起结构的高度相差不大。在一实施例中，硬化层20的厚度小于尖状凸起结构的高度，使得在硬化层20的表面仍然可以触摸到尖状凸起结构，同时由于尖状凸起结构微小，即使触摸到尖状凸起结构也仍然呈现较为顺滑的手感，进一步提高壳体100的触感。例如，硬化层20的厚度小于尖状凸起结构的平均高度，使得在硬化层20的表面可以触摸到大部分的尖状凸起结构。进一步的，当塑胶壳体本体10具有尖状凸起结构的表面的粗糙度Ra为2.5μm-3.5μm，尖状凸起结构的分布较为密集，硬化层20的表面也会具有密集的尖状凸起结构的手感，进而呈现出了丝绸般顺滑的手感，提升了壳体100外观的触摸感，更有利于其应用。在另一实施例中，硬化层20的表面粗糙度Ra可以为0.4μm-3μm，使得壳体100具有丝滑的手感。进一步的，硬化层20的表面粗糙度Ra可以为0.5μm-2μm。在另一实施例中，壳体100包括塑胶壳体本体10和硬化层20，硬化层20表面上尖状凸起结构的高度为1μm-23μm，平均高度Rz为12μm-19μm，最大高度Ry为12μm-30μm，单位长度(cm)内的数量为13个-43个。相关技术中，硬化层20表面的手感较涩，无法实现丝滑手感，本申请实施方式通过尖状凸起结构和硬化层20的相互配合设置，改善了现有硬化层20的表面手感，进一步提升了壳体100的质感和竞争力。在又一实施例中，硬化层20的表面光泽度为16-30，雾度小于55，使得壳体100既具有较好的光泽效果，同时避免了反光现象，使得壳体100的外观效果可以更好地呈现。进一步的，硬化层20的表面光泽度为16-25。更进一步的，硬化层20的表面光泽度为16-20。具体的，硬化层20表面的雾度可以但不限于小于53、52、50等。
在本申请实施方式中，硬化层20的材质包括聚氨酯丙烯酸酯、有机硅树脂、全氟聚醚丙烯酸酯中的至少一种。在本申请中，可以在塑胶壳体本体10的表面涂覆硬化液，经固化后形成硬化层20。硬化液可以但不限于为紫外光固化型硬化液、热固化型硬化液或紫外光-热双固化型硬化液。例如，可以选择PPG或宏泰科技的UV固化型硬化液，还可以选择其他市售的热固化型硬化液或紫外光-热双固化型硬化液。在一实施例中，可以在硬化液中加入抗指纹材料和/防眩光材料，以提高硬化层20的防污、防指纹附着、防眩光的效果。在另一实施例中，采用紫外光固化型硬化液，其包括聚氨酯丙烯酸酯和引发剂。可选的，聚氨酯丙烯酸酯和所述引发剂的质量比为100:(3-10)。进一步的，聚氨酯丙烯酸酯和所述引发剂的质量比为100:(3-8)。可选的，硬化液中固含量为25％-35％。在本申请一实施方式中，硬化液中还可以含有玻璃粉，玻璃粉可以对光线进行反射，进一步加强闪光效果，使壳体100的外观效果更加明显。可选的，玻璃粉的粒径为40μm-80μm。进一步的，玻璃粉的粒径为45μm-70μm。具体的，玻璃粉的粒径可以但不限于为50μm、55μm、60μm或 75μm。可选的，玻璃粉在硬化液中的质量含量为1‰-8‰。进一步的，玻璃粉在硬化液中的质量含量为2‰-5‰。具体的，玻璃粉在硬化液中的质量含量为1‰、3‰、4‰、6‰或7‰。由于玻璃粉在溶液中易发生沉降，因此，在涂覆过程中需要对硬化液进行不断的搅拌，使得玻璃粉在硬化液中分布均匀。
在本申请中，硬化液可以涂覆在塑胶壳体本体10的部分或全部表面；硬化液涂覆在塑胶壳体本体10的全部表面时，可以对整个塑胶壳体本体10进行保护，更符合应用需要。可选的，涂覆包括喷涂、浸涂、淋涂中的至少一种。例如，可以选择口径为1mm-1.5mm的喷枪进行喷涂，喷涂压力为2公斤/cm 2-2.5公斤/cm 2。进一步的，涂覆后流平时间为5min-10min。在一实施例中，涂覆厚度为4μm-35μm。进一步的，涂覆厚度为6μm-30μm。更进一步的，涂覆厚度为7μm-25μm。具体的，可以通过一次或多次涂覆、固化形成硬化层20。在另一实施例中，涂覆紫外光固化型硬化液后进行固化，其中，UV固化能量550mJ-900mJ，时间10s-20s。进一步的，固化温度为50℃-60℃。在本申请中，在塑胶壳体本体10的表面制得硬化层20后，可以在对壳体100的性能进行检测。例如可以在80℃-85℃烘烤2h-3h，或100℃水浴30min-50min，检测壳体100是否会开裂起皮等，保证制得的壳体100性能良好。
在本申请实施方式中，还可以在塑胶壳体本体10背离尖状凸起结构的一侧表面丝印图案、文字等。具体的，可以但不限于丝印商标图案(Logo)等，进一步改变壳体100的外观，提升竞争力。在一实施例中，通过在塑胶壳体本体10的表面丝印油墨，经固化后形成商标图案。此时，塑胶壳体本体10具有一定的透光性，以使得壳体100可以呈现商标图案的外观。进一步的，在丝印前对塑胶壳体本体10进行预处理，去除污渍、灰尘等杂质。在本申请中，油墨可以但不限于为镜面银油墨。可选的，丝印的网版为400目-500目，角度为20°-25°，具有6N-9N的张力，网版间距为3mm-5mm；刮胶硬度为75°-80°，刮刀角度为30°-80°，刮刀速度为150mm/sec-180mm/sec，压力为4.5bar-5.5bar。可选的，固化包括在50℃-80℃烘烤20min-60min。进一步的，在丝印后静置30min-90min后再进行烘烤。在一具体实施例中，采用380目、6N张力、角度为22.5°的丝印网版，35°刮胶进行丝印镜面银油墨，静置60min后，在60℃烘烤60min。
请参阅图4，为本申请一实施方式提供的壳体100的表面微观结构示意图，其中，壳体100包括了塑胶壳体本体10和硬化层20。通过激光显微镜对硬化层20的表面进行扫描，经三维成像后得到壳体100的表面微观结构示意图，其中，在成型硬化层20后，尖状凸起结构仍然较为密集的分布在表面，尖状凸起结构部分连续设置，部分间隔设置；尖状凸起结构的形状和尺寸不同，壳体100表面形成闪光砂纹理。
请参阅图5，为本申请另一实施方式提供的壳体100的结构示意图，其与图1的不同之处在于，壳体100还包括装饰膜30，装饰膜30设置在塑胶壳体本体10背向尖状凸起结构的一侧表面。在本申请实施方式中，装饰膜30可以包括UV纹理层31、镀膜层32和颜色层33中的至少一层，对壳体100的外观效果起到进一步的修饰作用，丰富其外观效果。在本申请中，装饰膜30在塑胶壳体本体10上的正投影可以完全或部分覆盖塑胶壳体本体 10，进而产生不同的外观效果。
在本申请中，UV纹理层31可以使壳体100产生光影流动变化，提升外观表现力。在本申请实施方式中，可以通过涂覆紫外光固化胶，经转印和固化形成UV纹理层31。在一实施例中，提供一具有目标纹理的转印模具；在转印模具上涂覆紫外光固化胶；将膜片置于紫外光固化胶上，并压制转印模具，经固化后形成UV纹理层31。可选的，可以通过LED灯和/或汞灯进行固化。进一步的，通过LED灯进行初步固化，汞灯进行二次固化，以确保紫外光固化胶水固化完全。进一步的，LED灯固化能量可以为1200mJ/cm 2-2600mJ/cm 2，汞灯固化能量可以为800mJ/cm 2-1500mJ/cm 2。可选的，紫外光固化胶的厚度为5μm-8μm。在本申请一实施例中，UV纹理层31的光学透过率大于85％。进一步的，UV纹理层31的光学透过率大于90％，以满足应用需要。可选的，UV纹理层31的厚度可以为4μm-7μm，具体的可以但不限于为4μm、4.5μm、5μm、5.5μm、6μm、7μm等，在此厚度范围内，可以形成良好的纹理效果，厚度过大可能导致UV纹理层31的抗冲击效果差，容易开裂，厚度过小可能导致形成的纹理不明显，光影流动的视觉外观不明显，同时制备工艺控制难度加大。
在本申请中，镀膜层32使得壳体100在不同角度具有光泽变化，带来不同的质感，提升外观表现力。在本申请实施方式中，可以但不限于通过物理气相沉积的方法成型镀膜层32，如蒸镀、溅射、离子镀等。在具体一实施例中，可以在镀膜机中挂架，随后抽真空并对材料预处理，经离子溅射形成镀膜层32。在本申请中，镀膜层32包括光学膜层和不导电金属层中的至少一种。光学膜层在不同角度下呈现不同的光泽质感，带来光线颜色变化，不导电金属层可以带来金属光泽质感。可选的，镀膜层32可以为单层膜结构，也可以为多层膜结构。
可以理解的，光学膜层是一种通过其界面传播光线的光学介质材料层，可以改变穿过光学膜层的光线的反射、折射等，使得壳体100呈现一定的光泽变化，如在不同角度下呈现出不同颜色光泽的视觉效果。通过改变光学膜层的材质、厚度和层数等改变光学膜层的反射率、折射率和透光率，实现不同的视觉效果，满足不同场景下的需求。在本申请中，光学膜层的光学透过率大于50％。可选的，光学膜层的厚度为150nm-800nm，具体的可以但不限于为150nm、180nm、250nm、300nm、500nm、600nm、700nm等，过薄会导致光学膜层呈现的光泽质感效果太弱，过厚会导致的膜层内的应力过大，容易脱落，该厚度范围有利于呈现光学膜层的视觉效果，同时保证光学膜层的使用寿命。
在本申请实施方式中，光学膜层的材质可以为无机物，也可以为有机物。可选的，有机物包括聚醚、聚酯、氟代聚合物和含硅聚合物中的至少一种。当光学膜层的材质为有机物时，光学膜层柔性好，可弯曲性好，能够进行剪裁得到所需尺寸的光学膜层。可选的，无机物包括无机氧化物和无机氟化物中的至少一种。进一步的，光学膜层的材质包括TiO 2、Ti 3O 5、NbO 2、Nb 2O 3、Nb 2O 2、Nb 2O 5、Al 2O 3、SiO 2和ZrO 2中的至少一种。在一实施例中，光学膜层可以为TiO 2层、Ti 3O 5层、NbO 2层、Nb 2O 3层、Nb 2O 2层、Nb 2O 5层、SiO 2层等，厚度为150nm-500nm。在另一实施例中，光学膜层可以为TiO 2层、Ti 3O 5层、NbO 2层、Nb2O3 层、Nb 2O 3层、Nb 2O 5层、Al 2O 3层、SiO 2层和ZrO 2层中至少两层的组合。在一具体实施例中，靠近塑胶壳体本体10的一侧为TiO 2层或SiO 2层，其厚度为150nm-500nm，远离塑胶壳体本体10的一侧为TiO 2层、Nb 2O 5层、Al 2O 3层和SiO 2层中的至少一层，以使得壳体100外观呈现彩色光泽质感的效果。
在本申请中，不导电金属层使壳体100具有金属光泽，提高金属质感。不导电金属层由金属材质构成，可以但不限于包括铟、锡或铟锡合金。在一实施方式中，可以采用物理气相沉积制备不导电金属层，厚度均匀性好、致密性高，提高壳体100的金属质感，且用于电子设备时不影响无线通讯传输效果。在一实施例中，可以采用电子枪蒸发镀纯铟制得不导电金属层。在另一实施例中，可以磁控溅射镀铟锡合金制得不导电金属层。具体的，可以根据所需外观效果调整镀膜时间，时间越长，不导电金属层越厚，金属光泽效果越亮。可选的，不导电金属层的厚度为5nm-50nm，有利于制得不导电膜层。在本申请中，当镀膜层32包括光学膜层和不导电金属层时，由于不导电金属层透光性相对较低，因此，将光学膜层设置在塑胶壳体本体10和不导电金属层之间，以使得每层结构的外观效果均可以呈现出来。
在本申请中，颜色层33用于着色，为壳体100提供了色彩外观效果。颜色层33的颜色可以但不限于为黄色、红色、蓝色、绿色、紫色等；也可以为多种颜色拼接，以形成撞色视觉效果；还可以为渐变色层等。在一实施例中，通过在不同区域设置不同颜色的油墨，实现两种或两种以上颜色的渐变，得到具有渐变色的颜色层33，例如相邻油墨区域的色差小于2，进而更好地实现渐变效果。在另一实施例中，通过在不同区域设置不同颜色的油墨，实现两种或两种以上颜色的撞色，得到具有撞色效果的颜色层33，例如相邻油墨区域的色差大于4，进而更好地实现撞色效果。在本申请中，颜色层33可以为实色层，也可以为透明层。
在本申请实施方式中，可以通过一次或多次的涂覆、打印、流延、压延等工艺成型颜色层33。在一实施例中，可以通过喷涂的方式，涂覆颜色油墨，经固化后形成颜色层33。可选的，固化为在60℃-90℃烘烤20min-40min。在本申请中，颜色层33的厚度不受特别限制，例如颜色层33的厚度可以为10μm-20μm，具体的可以但不限于为10μm、12μm、15μm、18μm、19μm等。在此范围的颜色层33既能够使壳体100具有较好的色彩外观，同时又不会过多增加壳体100的厚度，有利于整体结构的轻薄化。在一具体实施例中，第一道印刷陶瓷白底色进行80℃、30min预烘烤；第二道印刷陶瓷白进行80℃、30min预烘烤，使得壳体100呈现陶瓷白的外观，同时带有闪光效果。
请参阅图6，为本申请一实施方式提供的壳体100的结构示意图，其中，装饰膜30包括UV纹理层31、镀膜层32和颜色层33。在本申请一实施方式中，当镀膜层32仅具有光学膜层时，透光率好，可以将颜色层33可以设置在镀膜层32远离塑胶壳体本体10的一侧表面，UV纹理层31设置在塑胶壳体本体10和镀膜层32之间；此时，颜色层33和镀膜层32均可以对UV纹理层31的纹理效果起到衬托作用，使得壳体100更加明显呈现纹理效果，视觉效果丰富。颜色层33可以为实色层，也可以为透明层。在本申请另一实施方式中，可 以将颜色层33可以设置在镀膜层32和塑胶壳体本体10之间，UV纹理层31设置在颜色层33和塑胶壳体本体10之间，此时，颜色层33为透明层，而镀膜层32可以包括光学膜层，也可以包括不导电金属层，各层的视觉效果均可以呈现出来。在本申请又一实施例中，可以将颜色层33可以设置在镀膜层32和塑胶壳体本体10之间，UV纹理层31设置在颜色层33和镀膜层32之间，此时，颜色层33为透明层，以使得UV纹理层31和镀膜层32的外观效果可以呈现出来，而镀膜层32可以包括光学膜层，也可以包括不导电金属层，各层的视觉效果均可以呈现出来。
在本申请一实施方式中，当装饰膜30包括UV纹理层31和镀膜层32时，UV纹理层31设置在塑胶壳体本体10和镀膜层32之间。此时，镀膜层32可以对UV纹理层31的视觉效果起到衬托作用，可以更加明显的呈现UV纹理层31的外观效果；同时，具有UV纹理层31和镀膜层32的壳体100具有多彩的颜色和光影流动变化的纹理效果，大幅度提升壳体100的外观表现力。在本申请另一实施方式中，当装饰膜30包括UV纹理层31和颜色层33时，UV纹理层31设置在塑胶壳体本体10和颜色层33之间。此时，颜色层33可以对UV纹理层31的视觉效果起到衬托作用，可以更加明显的呈现UV纹理层31的外观效果，具有UV纹理层31和颜色层33的壳体100外观表现力得到提升。在本申请又一实施方式中，当装饰膜30包括镀膜层32和颜色层33时，可以根据镀膜层32和颜色层33的透光率进行设置，靠近塑胶壳体本体10的层结构需要具有一定的透光率，以使得远离塑胶壳体本体10的层结构的外观呈现出来。
在本申请中，可以通过制得装饰膜30后，通过粘结剂与塑胶壳体本体10连接，从而设置在塑胶壳体本体10的表面。具体的，粘结剂可以但不限于为光学胶。在本申请实施方式中，装饰膜30还包括衬底层，衬底层设置在UV纹理层31、镀膜层32和颜色层33中的至少一层，与塑胶壳体本体10之间。衬底层可以对UV纹理层31、镀膜层32和颜色层33起到衬托、承载作用，使得UV纹理层31、镀膜层32和颜色层33可以直接在衬底层上成型，进而在通过衬底层与塑胶壳体本体10贴合设置，更有利于各层的制备，并且可以使得壳体100具有丰富的外观。在本申请中，可以根据上述装饰膜30内部层结构，在衬底层上成型单层或多层结构。在一实施例中，可以使用UV模具将纹理转印到衬底层上，形成UV纹理层31；再将其置于镀膜机中，在UV纹理层31的表面形成镀膜层32；然后在镀膜层32表面涂覆颜色油墨，形成颜色层33；最后，衬底层通过光学胶与塑胶壳体本体10连接，制备过程更加方便，每层的成型效果好，外观效果佳。具体的，衬底层的材质可以但不限于为聚对苯二甲酸乙二醇酯(PET)和聚氨酯(PU)中的至少一种。可选的，衬底层的厚度为50μm-70μm，既可以起到支撑的作用，又不会过多增加整体结构的厚度。在一实施例中，衬底层为防爆膜，具有优异的耐冲击性能，进而提升了壳体100的性能，同时对UV纹理层31、镀膜层32和颜色层33也起到了一定的保护作用。在本申请中，可以制备较大尺寸的装饰母膜，然后在进行冲切成片，得到与塑胶壳体本体10匹配大小的装饰膜30，提高生产效率。在另一实施例中，上述贴合可以在真空贴合机中进行，以提高贴合强度，例如可以但不限于为3D真空贴合机。可选的，贴合温度为15℃-25℃，贴合时间为20s-40s， 以实现较好的贴合效果，提高生产良率。进一步的，在贴合后还需要进行除泡，包括在45℃-25℃，1.6MPa-1.8MPa下处理30min-60min。
请参阅图7，为本申请另一实施方式提供的壳体100的结构示意图，壳体100包括塑胶壳体本体10、硬化层20和装饰膜30，其中硬化层20和装饰膜30设置在塑胶壳体本体10的相对两侧，硬化层20设置在塑胶壳体本体10具有尖状凸起结构的一侧表面。此时，硬化层对壳体100起到保护作用，同时叠加尖状凸起结构，赋予壳体100丝滑的手感；尖状凸起结构使得壳体100呈现闪光砂效果；装饰膜30使得壳体100呈现不同的颜色、色泽、纹理等外观，极大的提升了壳体100的外观表现力。
在本申请实施方式中，壳体100还可以包括盖底层，盖底层的光学透过率小于或等于1％。壳体100用于电子设备时，盖底层可以遮挡电子设备内部的元件，并保护内部层结构，还可以作为粘接面使用。在一实施例中，盖底层设置在塑胶壳体本体10背离尖状凸起结构的一侧表面。在另一实施例中，当壳体100包括装饰膜30时，盖底层设置在装饰膜30远离塑胶壳体本体10的一侧表面。具体的，可以在装饰膜30上多次印刷盖底油墨，例如黑色油墨、灰色油墨、白色油墨等，并进行烘烤固化。可选的，盖底油墨包括带色油墨、固化剂、稀释剂和助剂。盖底油墨经烘烤后形成盖底层。可选的，烘烤温度可以为65℃-85℃，烘烤时间可以为40min-80min，烘烤后形成的盖底层的厚度为6μm-10μm。可以通过往复涂多次的方法，进一步防止盖底层漏光。在一实施例中，可以在装饰膜30上印刷钛晶黑，并在80℃、烘烤60min，形成盖底层。在本申请实施方式中，盖底层可以成型在装饰膜30后，与装饰膜30一起与塑胶壳体本体10连接；也可以在装饰膜30连接至塑胶壳体本体10后，再在装饰膜30上成型盖底层。
本申请实施方式通过设置具有尖状凸起结构的塑胶壳体本体10，使得光线在尖状凸起结构得到反射，壳体100的外观呈现闪光效果，丰富视觉效果，避免同质化，提升产品竞争力。
请参阅图8，为本申请一实施方式提供的壳体的制备方法的流程示意图，该制备方法制备上述任一实施方式中的壳体100，包括：
操作101：提供注塑模具，注塑模具包括对应设置的公模和母模，母模靠近公模的表面具有多个凹陷结构。
在操作101中，可以但不限于通过镭雕在母模的表面成型凹陷结构，镭雕的参数包括10W-50W的功率、50HZ-100HZ的频率、170mm-180mm的焦距、0.10mm-0.12mm的线宽、750mm/s-1000mm/s的光点移动速度、900mm/s-2000mm/s的跳转速度。在一实施方式中，镭雕包括先进行粗加工，再进行精加工，其中，粗加工的参数包括20W-50W的功率、50HZ-70HZ的频率、750mm/s-850mm/s的光点移动速度、900mm/s-1200mm/s的跳转速度，精加工的参数包括10W-15W的功率、80HZ-100HZ的频率、900mm/s-1000mm/s的光点移动速度、1500mm/s-2000mm/s的跳转速度。进一步的，为了实现更好地成型凹陷结构，可以对母模待处理区域进行分区，形成多个镭雕区域，实现更加精细化处理。在另一实施方式中，还包括对镭雕后的母模进行喷砂处理，喷砂包括采用6mm-10mm口径的喷枪，在1 公斤/cm 2-3公斤/cm 2喷枪气压下，喷涂160目-200目的砂粒。可选的，经喷砂后，母模的光泽度为15-25。
操作102：将公模和母模合模，公模和母模之间形成注塑空间。
操作103：将塑胶注入注塑空间中，经注塑成型工艺得到塑胶壳体本体，塑胶壳体本体的表面具有多个与凹陷结构相匹配的尖状凸起结构。
在操作103中，可以通过塑胶熔融、上模、调试、合模、射胶填充、保压成型、冷却和开模工艺制得塑胶壳体本体10。在一实施方式中，利用注塑压缩成型工艺制备塑胶壳体本体10，相应的，注塑模具为压缩模。压缩注塑成型可以消除内应力，制得的塑胶壳体本体10尺寸更加均匀，致密性良好，同时有利于制得较薄厚度的塑胶壳体本体10，有利于其应用。可选的，料筒温度为200℃-350℃。可选的，塑胶熔融的温度为220℃-260℃。进一步的，塑胶熔融的温度为230℃-250℃。在注塑时，模具穴数可以根据需要进行选择，例如一模两穴、一模一穴等。可选的，模具的模温为50℃-85℃。进一步的，公模的模温为50℃-70℃，母模的模温为70℃-85℃。例如，公模的模温可以为55℃，母模的模温可以为80℃。可选的，射胶填充的压力为3000kgf/cm 2-3500kgf/cm 2，注射速度为100mm/s-350mm/s。可选的，保压成型的压力为500kgf/cm 2-1250kgf/cm 2，保压成型的时间为1s-5s。可选的，冷却时间为10s-40s。具体的，可以上述的分段射胶、分段保压和分段开模的工艺过，以得到性能优异的塑胶壳体本体10。
在本申请实施方式中，还可以在塑胶壳体本体10具有尖状凸起结构的表面涂覆硬化液，经固化后形成硬化层20，硬化液可以但不限于为紫外光固化型硬化液、热固化型硬化液或紫外光-热双固化型硬化液。可选的，涂覆包括喷涂、浸涂、淋涂中的至少一种。在一实施例中，涂覆厚度为6μm-30μm。具体的，可以通过一次或多次涂覆、固化形成硬化层20。在另一实施例中，涂覆紫外光固化型硬化液后进行固化，其中，UV固化能量550mJ-900mJ，时间10s-20s。在本申请另一实施方式中，硬化液中还可以含有玻璃粉，玻璃粉的粒径为40μm-80μm，玻璃粉在硬化液中的质量含量为1‰-8‰，进一步加强闪光效果，使壳体100的外观效果更加明显。
在本申请实施方式中，还可以在塑胶壳体本体10背离尖状凸起结构的一侧表面丝印图案、文字等。具体的，可以但不限于丝印商标图案(Logo)等，进一步改变壳体100的外观，提升竞争力。可选的，丝印的网版为400目-500目，角度为20°-25°，具有6N-9N的张力，网版间距为3mm-5mm；刮胶硬度为75°-80°，刮刀角度为30°-80°，刮刀速度为150mm/sec-180mm/sec，压力为4.5bar-5.5bar。可选的，固化包括在50℃-80℃烘烤20min-60min。进一步的，在丝印后静置30min-90min后再进行烘烤。
在本申请实施方式中，还可以在塑胶壳体本体10背向尖状凸起结构的一侧表面成型装饰膜30，装饰膜30包括UV纹理层31、镀膜层32和颜色层33中的至少一层。
在本申请实施方式中，可以但不限于通过紫外光固化胶转印的方式呈现UV纹理层31。在一实施例中，提供一具有目标纹理的转印模具；在转印模具上涂覆紫外光固化胶；将膜片置于紫外光固化胶上，并压制转印模具，经固化后形成UV纹理层31。可选的，可以通 过LED灯和/或汞灯进行固化。进一步的，通过LED灯进行初步固化，汞灯进行二次固化，以确保紫外光固化胶水固化完全。进一步的，LED灯固化能量可以为1200mJ/cm 2-2600mJ/cm 2，汞灯固化能量可以为800mJ/cm 2-1500mJ/cm 2。
在本申请实施方式中，可以但不限于通过物理气相沉积的方法成型镀膜层32，如蒸镀、溅射、离子镀等。在本申请中，镀膜层32包括光学膜层和不导电金属层中的至少一种。在一实施例中，可以在镀膜机中挂架，随后抽真空并对材料预处理，经离子溅射形成镀膜层32。
在本申请实施方式中，可以但不限于通过一次或多次的涂覆、打印、流延、压延等工艺成型颜色层33。在一实施例中，可以通过喷涂的方式，涂覆颜色油墨，经固化后形成颜色层33。可选的，固化为在60℃-90℃烘烤20min-40min。
在本申请实施方式中，装饰膜30还包括衬底层，衬底层设置在UV纹理层31、镀膜层32和颜色层33中的至少一层，与塑胶壳体本体10之间。在本申请中，可以根据上述装饰膜30内部层结构，在衬底层上成型单层或多层结构。在一实施例中，可以使用UV模具将纹理转印到衬底层上，形成UV纹理层31；再将其置于镀膜机中，在UV纹理层31的表面形成镀膜层32；然后在镀膜层32表面涂覆颜色油墨，形成颜色层33；最后，衬底层通过光学胶与塑胶壳体本体连接，制备过程更加方便，每层的成型效果好，外观效果佳。
在本申请实施方式中，还可以在塑胶壳体本体10背离尖状凸起结构的一侧表面印刷盖底油墨，形成盖底层，盖底层的光学透过率小于或等于1％。盖底层可以遮挡电子设备内部的元件，并保护内部层结构，还可以作为粘接面使用。盖底油墨包括带色油墨、固化剂、稀释剂和助剂，经烘烤后形成盖底层。可选的，烘烤温度可以为65℃-85℃，烘烤时间可以为40min-80min。
在本申请实施方式中，还包括进行计算机数字化控制精密机械加工(CNC加工)。CNC加工可以铣去多余的边角料，以及加工外形和所需要的通孔等，获得最终所需外观效果的壳体。在一实施例中，采用精雕机加工，以保证尺寸的精准，加工精度为±8μM以内，以得到较为优质的壳体。在另一实施例中，CNC精雕机加工参数为：主轴转速45000转/min-55000转/min，进给速度1500mm/min-4000mm/min；此工艺既提高了产品良率，也保证了加工效率。进一步的，可以根据需要的产品外形、孔位选择刀具，例如可以选择使用寿命为1800pcs-2000pcs的组合刀，5500pcs-6000pcs的倒角刀，提高使用时长。
在本申请提供的壳体的制备方法操作简单，易于大规模生产，可以具有闪光外观效果的壳体，外观可变性增强，避免同质化，有利于其应用。
本申请还提供了一种电子设备，包括上述任一实施方式中的壳体100。可以理解的，电子设备可以但不限于为手机、平板电脑、笔记本电脑、手表、MP3、MP4、GPS导航仪、数码相机等。下面以手机为例进行说明。
请参阅图9，为本申请一实施方式提供的电子设备的结构示意图，电子设备包括显示屏200，以及设置在显示屏200相对两侧的盖板300和壳体100，壳体100包括塑胶壳体本体10，塑胶壳体本体10的表面具有多个尖状凸起结构。可以理解的，壳体100具有相对 设置的内表面和外表面，其中，内表面和外表面是以壳体100的使用状态为参照。壳体100应用于电子设备，朝向电子设备内部的一面为内表面，朝向电子设备外部的一面为外表面。在本申请中，尖状凸起结构设置在塑胶壳体本体10的外表面，使得电子设备的外观具有闪光砂纹理，呈现闪闪发光的视觉效果，提高产品竞争力。
以上对本申请实施方式所提供的内容进行了详细介绍，本文对本申请的原理及实施方式进行了阐述与说明，以上说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的一般技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种壳体，其特征在于，包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
  2. 如权利要求1所述的壳体，其特征在于，所述塑胶壳体本体具有所述尖状凸起结构的表面的粗糙度Ra为2.5μm-3.5μm。
  3. 如权利要求1所述的壳体，其特征在于，所述尖状凸起结构为微米级结构，所述尖状凸起结构的高度为14μm-30μm，所述尖状凸起结构的分布密度为500个/cm 2-2000个/cm 2。
  4. 如权利要求1所述的壳体，其特征在于，所述尖状凸起结构的平均高度Rz为15μm-25μm；所述尖状凸起结构的最大高度Ry为19μm-30μm；所述尖状凸起结构的横向尺寸为80μm-120μm。
  5. 如权利要求1所述的壳体，其特征在于，所述塑胶壳体本体具有所述尖状凸起结构的表面光泽度为17-24。
  6. 如权利要求1所述的壳体，其特征在于，所述尖状凸起结构包括棱锥结构、类棱锥结构和圆锥结构中的至少一种。
  7. 如权利要求1所述的壳体，其特征在于，所述塑胶壳体本体经注塑成型。
  8. 如权利要求1所述的壳体，其特征在于，还包括硬化层，所述硬化层设置在所述塑胶壳体本体具有所述尖状凸起结构的一侧表面。
  9. 如权利要求8所述的壳体，其特征在于，所述硬化层的厚度为4μm-30μm。
  10. 如权利要求8所述的壳体，其特征在于，所述硬化层中具有玻璃粉，所述玻璃粉的粒径为40μm-80μm。
  11. 如权利要求1所述的壳体，其特征在于，还包括装饰膜，所述装饰膜设置在所述塑胶壳体本体背向所述尖状凸起结构的一侧表面，所述装饰膜包括UV纹理层、镀膜层和颜色层中的至少一层。
  12. 如权利要求11所述的壳体，其特征在于，所述装饰膜还包括衬底层，所述衬底层设置在所述UV纹理层、镀膜层和颜色层中的至少一层，与所述塑胶壳体本体之间。
  13. 一种壳体的制备方法，其特征在于，包括：
    提供注塑模具，所述注塑模具包括对应设置的公模和母模，所述母模靠近所述公模的表面具有多个凹陷结构；
    将所述公模和所述母模合模，所述公模和所述母模之间形成注塑空间；
    将塑胶注入所述注塑空间中，经注塑成型工艺得到塑胶壳体本体，所述塑胶壳体本体的表面具有多个与所述凹陷结构相匹配的尖状凸起结构。
  14. 如权利要求13所述的制备方法，其特征在于，通过镭雕在所述母模的表面成型所述凹陷结构，所述镭雕的参数包括10W-50W的功率、50HZ-100HZ的频率、170mm-180mm的焦距、0.10mm-0.12mm的线宽、750mm/s-1000mm/s的光点移动速度、900mm/s-2000mm/s 的跳转速度。
  15. 如权利要求14所述的制备方法，其特征在于，所述镭雕包括先进行粗加工，再进行精加工，其中，所述粗加工的参数包括20W-50W的功率、50HZ-70HZ的频率、750mm/s-850mm/s的光点移动速度、900mm/s-1200mm/s的跳转速度，所述精加工的参数包括10W-15W的功率、80HZ-100HZ的频率、900mm/s-1000mm/s的光点移动速度、1500mm/s-2000mm/s的跳转速度。
  16. 如权利要求14所述的制备方法，其特征在于，还包括对所述镭雕后的所述母模进行喷砂处理，所述喷砂包括采用6mm-10mm口径的喷枪，在1公斤/cm 2-3公斤/cm 2喷枪气压下，喷涂160目-200目的砂粒。
  17. 如权利要求16所述的制备方法，其特征在于，经所述喷砂后，所述母模的光泽度为15-25。
  18. 如权利要求13所述的制备方法，其特征在于，还包括：
    在所述塑胶壳体本体具有所述尖状凸起结构的表面涂覆硬化液，经固化后形成硬化层。
  19. 如权利要求13所述的制备方法，其特征在于，还包括：
    在所述塑胶壳体本体背向所述尖状凸起结构的一侧表面成型装饰膜，所述装饰膜包括UV纹理层、镀膜层和颜色层中的至少一层。
  20. 一种电子设备，其特征在于，包括显示屏，以及设置在所述显示屏相对两侧的盖板和壳体，所述壳体包括塑胶壳体本体，所述塑胶壳体本体的表面具有多个尖状凸起结构。
PCT/CN2021/084757 2020-05-25 2021-03-31 壳体、壳体的制备方法及电子设备 WO2021238402A1 (zh)

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