CN113829560A - Production process of colored plate mobile phone backboard - Google Patents
Production process of colored plate mobile phone backboard Download PDFInfo
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- CN113829560A CN113829560A CN202111105022.0A CN202111105022A CN113829560A CN 113829560 A CN113829560 A CN 113829560A CN 202111105022 A CN202111105022 A CN 202111105022A CN 113829560 A CN113829560 A CN 113829560A
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- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a production process of a colored sheet mobile phone backboard, which comprises the following steps: (1) manufacturing a colored plate; (2) transferring a first target texture to the outer surface of the coloring plate to form a first texture layer, and forming a first coating film layer on the first texture layer; (3) transferring a second target texture to the first coating layer to form a second texture layer; (4) pressing and forming to form a mobile phone back plate blank; (5) forming a second coating layer on the outer surface of the mobile phone back plate blank formed by pressing; (6) spraying a polishing-resistant curing ink layer; (7) and (5) CNC fine engraving to obtain a mobile phone backboard finished product. According to the invention, the colored composite board is adopted, and light rays are refracted and reflected back and forth in different textures and coating films through splicing combination of the two different textures and the two layers of covered nano optical coating films, so that the mobile phone can present flowing colors, and the color diversity of the back plate is enhanced.
Description
Technical Field
The invention relates to the technical field of shell processing, in particular to a production process of a colored plate mobile phone backboard.
Background
With the advent of the 5G era, the mobile phone industry will come with a new revolution. With the improvement of life quality, the selection of mobile phones by the public has been more than the use performance, and the mobile phones have higher and higher requirements on appearance aesthetic feeling. The mobile phone back plate is one of the most important appearance parts of the mobile phone, and also becomes one of the important standards for selecting the mobile phone by consumers.
The production process of the mobile phone back plate on the market is complex, the color richness is increased, and the insufficient texture permeability is often caused; the high-quality high-permeability backboard has an unobvious texture effect and cannot show the color diversity of the backboard.
Disclosure of Invention
The invention aims to provide a production process of a colored plate mobile phone back plate, aiming at the defects in the prior art, the colored plate is used for increasing the double-grain double-plating effect, so that the surface effect is improved, various changes are brought, the texture effect can be fully reflected, and the color diversity of the back plate is enhanced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a colored sheet mobile phone backboard comprises the following steps:
(1) manufacturing a colored plate;
(2) transferring a first target texture to the outer surface of the coloring plate to form a first texture layer, and forming a first coating film layer on the first texture layer;
(3) transferring a second target texture to the first coating layer to form a second texture layer;
(4) pressing and forming, namely pressing and heating the colored plate processed in the step in a high-temperature high-pressure forming machine to form a mobile phone backboard blank;
(5) forming a second coating layer on the outer surface of the mobile phone back plate blank formed by pressing;
(6) spraying a wear-resistant photocuring ink layer on the surface of the mobile phone back plate blank treated by the steps;
(7) and (5) CNC fine engraving to obtain a mobile phone backboard finished product.
Preferably, the preparation method of the colored sheet material comprises the following steps: 20-60 parts by weight of polycarbonate, 30-50 parts by weight of polymethacrylate, 3-10 parts by weight of colorant, 1-3 parts by weight of phase solvent, 0.1-0.5 part by weight of lubricant, 0.1-1 part by weight of curing agent, 0.1-1.5 parts by weight of coupling agent and 1-5 parts by weight of nano-silica are mixed at high speed to 160 ℃, the uniformly mixed materials are added into a double-screw granulator, and after mixing and plasticizing at 180 ℃, the materials are put into a die for die casting and molding after composite extrusion, and cooling is carried out, thus obtaining the colored plate.
Preferably, the colorant is one or both of an inorganic colorant and an organic colorant.
Preferably, the coupling agent is one or more of a silane coupling agent, an aluminate coupling agent and a titanate coupling agent.
Preferably, the compatibilizer is an ethylene acrylate copolymer or a maleic anhydride grafted polyolefin.
Preferably, the thickness of the colored sheet material is 0.5 mm.
Preferably, the thickness of the first texture layer is 7-14 μm.
Preferably, the thickness of the first coating layer is 40-180 nm.
Preferably, the thickness of the second texture layer is 7-14 μm.
Preferably, the thickness of the second coating layer is 40-450 nm.
Preferably, the thickness of the photocuring ink layer is 15-30 μm.
Compared with the prior art, the invention has the beneficial effects that: the coloring agent is added in the process of manufacturing the plate, so that the overall color of the raw materials is increased, and the overall texture of the product is improved; then through increasing the two plating effects of double-line to painted panel, improve the multiple change of surface effect, can fully embody the texture effect, light makes a round trip to refract and reflect in the different texture of closely laminating and coating film, can make the cell-phone demonstrate the color like flowing, the colour diversity of reinforcing backplate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A production process of a colored sheet mobile phone backboard comprises the following steps:
(1) manufacture of colored sheet
In the example, 40 parts by weight of polycarbonate, 40 parts by weight of polymethacrylate, 8 parts by weight of inorganic colorant, 2.5 parts by weight of ethylene acrylate copolymer, 0.3 part by weight of lubricant, 0.5 part by weight of curing agent, 1.0 part by weight of silane coupling agent and 3 parts by weight of nano-silica are mixed at a high speed to 160 ℃, the uniformly mixed materials are added into a double-screw granulator, and after mixing and plasticizing at 180 ℃, the materials are put into a die for die casting and molding after composite extrusion, and cooling is carried out, so as to obtain a colored plate with the thickness of 0.5 mm.
In another embodiment: 60 parts of polycarbonate, 50 parts of polymethacrylate, 10 parts of inorganic colorant and organic colorant, 3 parts of ethylene acrylate copolymer, 0.5 part of lubricant, 1.0 part of curing agent, 1.5 parts of aluminate coupling agent and 5 parts of nano-silica are mixed at high speed to 160 ℃, the uniformly mixed materials are added into a double-screw granulator, and are subjected to mixing and plasticizing at 180 ℃, then are put into a die for die-casting molding after composite extrusion, and are cooled, so that a colored plate with the thickness of 0.5mm is obtained.
In other embodiments: 20 parts of polycarbonate, 30 parts of polymethacrylate, 3 parts of organic colorant, 1 part of maleic anhydride grafted polyolefin, 0.1 part of lubricant, 0.1 part of curing agent, 0.1 part of titanate coupling agent and 1 part of nano-silica are mixed at high speed to 160 ℃, the uniformly mixed materials are added into a double-screw granulator, and are subjected to mixing and plasticizing at 180 ℃, then are subjected to compound extrusion, are placed into a die for die-casting molding, and are cooled to obtain a colored plate with the thickness of 0.5 mm.
The lubricant and the curing agent may be of various types which are currently commercially available. The inorganic colorant can adopt common titanium dioxide, carbon black, ultramarine, ferric oxide, titanium yellow, mica titanium pearl powder, copper powder and aluminum powder in the current market; the organic colorant can adopt phthalocyanine blue, phthalocyanine green, permanent yellow, permanent orange, permanent violet, aurora red, fast brilliant red, quinacridone, benzimidazolone, isoindolinone, pyrrolopyrroledione, transparent red EG, fluorescent red BK, transparent orange 3G, transparent blue 2B and transparent violet R which are commonly found on the market at present. The colorant in the actual production process can be selected from proper colorant types according to the product requirements.
The coupling agent in the above embodiment can further improve the compatibility between the colorant, the nano-silica and the resin, so that the components are uniformly dispersed and have uniform color.
(2) Transferring a first target texture to the outer surface of the coloring plate to form a first texture layer, and forming a first coating film layer on the first texture layer
In the present embodiment, the target texture in the transfer mold was transferred onto the outer surface of the colored sheet material by the UV transfer process to form the first texture layer having a thickness of 7 μm. The UV transfer printing process, also known as UV filling process or UV coating process, transfers the texture to the plate by using the non-stick characteristic of the UV transfer printing glue and the metal, thereby achieving the effects of CD texture, vertical drawing, matte texture, bright surface texture and the like. After the colored plate finishes the transfer printing of the first target texture, the colored plate is placed into a vacuum coating machine, and a high-refractive-index material TiO is electroplated on the first target texture2Thin film layer, high refractive index material TiO2The preparation process parameters of the thin film layer are as follows: the temperature in the vacuum coating machine furnace is 50 ℃, and the vacuum degree is 8.0 multiplied by 10-4Pa, the working pressure is 0.5Pa, the argon flow is 90sccm, the oxygen flow is 70sccm, and the high-refractive-index material TiO is obtained by deposition2The overall thickness of the thin film layer was 40 nm.
In another embodiment, the first textured layer has a thickness of 10 μm and the deposited high refractive index material, TiO2The overall thickness of the thin film layer was 100 nm.
In other embodiments, the first textured layer has a thickness of 14 μm and the resulting high refractive index material, TiO, is deposited2The overall thickness of the thin film layer was 180 nm.
(3) Transferring a second target texture onto the first coating layer to form a second texture layer
In this embodiment, the second texture layer with a thickness of 14 μm is formed by transferring the second target texture in the transfer mold onto the first plating layer through a UV transfer process.
In another embodiment, the second texture layer has a thickness of 10 μm.
In other embodiments, the second texture layer has a thickness of 7 μm.
(4) Pressure forming
In this example, the colored sheet processed in the above steps was placed in a high-temperature high-pressure forming machine at 140 ℃ and a pressure of 120Kgf/cm2And (4) pressing and heating to punch and form a mobile phone back plate blank.
(5) Forming a second coating layer on the outer surface of the mobile phone back plate blank formed by pressing
In this embodiment, the mobile phone back plate blank is placed in a vacuum coating machine, and a high refractive index material TiO is plated on the second texture layer2Thin film layer, high refractive index material TiO2The preparation process parameters of the thin film layer are as follows: the temperature in the vacuum coating machine furnace is 50 ℃, and the vacuum degree is 8.0 multiplied by 10-4Pa, the working pressure is 0.5Pa, the argon flow is 90sccm, the oxygen flow is 70sccm, and the high-refractive-index material TiO is obtained by deposition2The overall thickness of the thin film layer was 40 nm.
In another embodiment, the resulting high refractive index material, TiO, is deposited2The overall thickness of the thin film layer was 200 nm.
In other embodiments, the resulting high refractive index material, TiO, is deposited2The overall thickness of the thin film layer was 450 nm.
(6) Spraying a wear-resistant photocuring ink layer on the surface of the mobile phone backboard blank treated by the steps
In the embodiment, the wear-resistant photo-curing ink is sprayed on the surface of the mobile phone back plate blank processed in the steps (1) to (5) to realize bottom covering and strengthening, and the thickness is 600mj/cm2And (4) curing by ultraviolet lamp irradiation for 60s, wherein the whole thickness of the high-wear-resistance photocuring ink layer is 20 microns. The high-wear-resistance photo-curing ink comprises the following raw materials in parts by weight: 70 parts of photosensitive resin, 12 parts of diluent, 5 parts of photoinitiator, 8 parts of nano silicon dioxide and 1 part of auxiliary agent.
In another embodiment, the abrasion-resistant photo-curing ink is sprayed on the surface of the mobile phone back plate blank treated in the steps (1) to (5) and passes through the surface treatment area of 800mj/cm2And (3) irradiating the ink layer by an ultraviolet lamp for 40s for curing, wherein the whole thickness of the high-wear-resistance photocuring ink layer is 30 microns.
In other embodiments, the abrasion-resistant photocuring ink is sprayed on the surface of the mobile phone back plate blank treated in the steps (1) to (5) and passes through the surface treatment layer of 900mj/cm2And (4) curing by ultraviolet lamp irradiation for 30s, wherein the whole thickness of the high-wear-resistance photocuring ink layer is 15 microns.
(7) CNC engraving to obtain the final product of the mobile phone backboard
And (3) post-processing the mobile phone backboard blank sprayed with the polishing-resistant curing ink by using a carving machine, wherein the main purposes are size adjustment, chamfering, perforating and grooving, the use requirement of the mobile phone backboard is met, and the finished mobile phone backboard is manufactured.
The mobile phone back panel prepared by the process steps comprises a wear-resistant photocuring ink layer, a second coating layer, a second texture layer, a first coating layer, a first texture layer, a coloring plate and a wear-resistant photocuring ink layer from outside to inside.
In the process, the colored plate is extruded and molded at one time, the process is simple, the production efficiency is high, and the coloring agent is added in the plate manufacturing process, so that the overall color of the raw materials is increased, and the overall texture of the product is improved.
In the process, the double-grain double-plating effect is added to the colored plate, so that the surface effect is improved, various changes can be realized, the texture effect can be fully embodied, light rays are refracted and reflected back and forth in different closely-attached textures and plated films, the mobile phone can present flowing colors, and the color diversity of the back plate is enhanced.
In the process, the wear-resistant photocuring ink layer is sprayed, so that the cover bottom is formed on the coating layer, and the strengthening layer can be formed on the surface of the mobile phone back plate.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A production process of a colored sheet mobile phone backboard is characterized by comprising the following steps: the method comprises the following steps:
(1) manufacturing a colored plate;
(2) transferring a first target texture to the outer surface of the coloring plate to form a first texture layer, and forming a first coating film layer on the first texture layer;
(3) transferring a second target texture to the first coating layer to form a second texture layer;
(4) pressing and forming, namely pressing and heating the colored plate processed in the step in a high-temperature high-pressure forming machine to form a mobile phone backboard blank;
(5) forming a second coating layer on the outer surface of the mobile phone back plate blank formed by pressing;
(6) spraying a wear-resistant photocuring ink layer on the surface of the mobile phone back plate blank treated by the steps;
(7) and (5) CNC fine engraving to obtain a mobile phone backboard finished product.
2. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the preparation method of the coloring plate comprises the following steps: 20-60 parts by weight of polycarbonate, 30-50 parts by weight of polymethacrylate, 3-10 parts by weight of colorant, 1-3 parts by weight of phase solvent, 0.1-0.5 part by weight of lubricant, 0.1-1 part by weight of curing agent, 0.1-1.5 parts by weight of coupling agent and 1-5 parts by weight of nano-silica are mixed at high speed to 160 ℃, the uniformly mixed materials are added into a double-screw granulator, and after mixing and plasticizing at 180 ℃, the materials are put into a die for die casting and molding after composite extrusion, and cooling is carried out, thus obtaining the colored plate.
3. The production process of the colored sheet mobile phone backboard according to claim 2, wherein the production process comprises the following steps: the colorant is one or two of inorganic colorant and organic colorant; the coupling agent is one or more of silane coupling agent, aluminate coupling agent and titanate coupling agent; the compatilizer is ethylene acrylate copolymer or maleic anhydride grafted polyolefin.
4. The production process of the colored sheet mobile phone backboard according to claim 1 or 2, wherein the production process comprises the following steps: the thickness of the coloring plate is 0.5 mm.
5. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the thickness of the first texture layer is 7-14 μm.
6. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the thickness of the first coating layer is 40-180 nm.
7. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the thickness of the second texture layer is 7-14 μm.
8. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the thickness of the second coating layer is 40-450 nm.
9. The production process of the colored sheet mobile phone backboard according to claim 1, wherein the production process comprises the following steps: the thickness of the photocuring ink layer is 15-30 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111105022.0A CN113829560A (en) | 2021-09-18 | 2021-09-18 | Production process of colored plate mobile phone backboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105022.0A CN113829560A (en) | 2021-09-18 | 2021-09-18 | Production process of colored plate mobile phone backboard |
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| CN113829560A true CN113829560A (en) | 2021-12-24 |
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| CN202111105022.0A Pending CN113829560A (en) | 2021-09-18 | 2021-09-18 | Production process of colored plate mobile phone backboard |
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| CN116080111A (en) * | 2023-02-22 | 2023-05-09 | 东莞好年璟新材料科技有限公司 | Double-texture forming process of 3D carbon fiber plate |
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