CN113858668A - Production process of composite board mobile phone rear cover with texture on front surface - Google Patents
Production process of composite board mobile phone rear cover with texture on front surface Download PDFInfo
- Publication number
- CN113858668A CN113858668A CN202110968163.9A CN202110968163A CN113858668A CN 113858668 A CN113858668 A CN 113858668A CN 202110968163 A CN202110968163 A CN 202110968163A CN 113858668 A CN113858668 A CN 113858668A
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- CN
- China
- Prior art keywords
- layer
- texture
- forming
- composite board
- resin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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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
-
- 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
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
- H04M1/185—Improving the rigidity of the casing or resistance to shocks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a production process of a composite board mobile phone rear cover with texture on the front surface, which comprises the following steps: 1) taking the composite board, 2) forming a LOGO layer, 3) forming a UV texture layer, 4) forming an electroplating layer, 5) forming a pattern printing layer, 6) performing surface treatment, and 7) performing CNC forming, wherein the surface treatment step sequentially comprises front-side coating treatment and embossing transfer printing treatment, a layer of primer is coated on the PMMA surface of the composite board in a suspension mode from top to bottom in the front-side coating treatment to obtain a cured primer layer, UV embossing transfer printing is performed on the cured primer layer, and finally the surface treatment step is completed through curing. Compared with the prior art, the front of the whole composite board mobile phone rear cover can be formed with a texture layer, the front surface and the back surface of the mobile phone rear cover are both provided with texture layers, the visual effect of double textures is achieved, the stereoscopic impression of the whole textures is high, the hardness is high, a user can touch the uneven texture layer, and the touch feeling is good.
Description
Technical Field
The invention relates to a production process of a mobile phone rear cover, in particular to a production process of a composite board mobile phone rear cover with textures on the front surface.
Background
Because of the use particularity of mobile phones, most mobile phone shells are made of plastic materials so as to prevent mobile phone signals from being shielded, and the back shell made of the plastic materials has poor hardness and is easy to cause the problem of surface damage during molding, so that the existing plastic mobile phone back shell is made of a composite plate formed by compositing a PMMA film and a PC film. The method comprises the specific production steps of preparing a composite board with a PMMA surface and a PC surface, sequentially carrying out LOGO printing, UV embossing treatment, electroplating treatment and ground color printing treatment on the PC surface of the composite board, then carrying out CNC treatment to finish the processing of the mobile phone rear cover of the composite board, and finally, in order to improve the surface hardness of the whole mobile phone rear cover again, coating and curing a layer of hardening liquid on the PMMA surface before the CNC treatment, wherein the hardening liquid enhances the surface hardness of the mobile phone rear cover to a certain extent, but the adhesion between the hardening liquid and the PMMA surface is poor, the hardness can only reach about 2H at the highest, and the hardening liquid is coated and cured at the same time and cannot be subjected to texture treatment, so that the surface of the hardening liquid can only have a smooth surface effect and is poor in touch.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide a production process of a composite plate mobile phone rear cover with textures on the front surface, and aims to solve the problems that in the prior art, a hardened liquid layer is formed on a PMMA (polymethyl methacrylate) surface, so that the mobile phone rear cover has a single texture effect, low hardness and poor touch.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a composite board mobile phone rear cover with texture on the front surface comprises the following steps: 1) taking a composite board with one side being a PC side and the other side being a PMMA side, 2) forming a LOGO layer, 3) forming a UV texture layer, 4) forming an electroplating layer, 5) forming a pattern printing layer, 6) carrying out surface treatment, and 7) carrying out CNC forming, wherein the steps of forming the LOGO layer, forming the UV texture layer, forming the electroplating layer and carrying out CNC forming adopt a known common method; the surface treatment step sequentially comprises front face coating treatment and embossing transfer printing treatment, wherein a layer of primer is coated on the PMMA surface of the composite board from top to bottom in a hanging mode in the front face coating treatment, the primer mainly comprises hexafunctionality polyurethane acrylate resin, difunctional polyurethane acrylic resin and butyl acetate, and the weight ratio of the hexafunctionality polyurethane acrylate resin to the difunctional polyurethane acrylic resin is 1: 5-5.5 percent of difunctional polyurethane acrylic resin accounting for 40-45 percent of the total weight, and curing the primer after spray coating to form a cured primer layer;
UV embossing transfer printing is carried out on the cured primer layer in a mode of spot coating UV glue, a front surface UV texture layer is formed on the cured primer layer, the UV glue is prepared from acrylate resin, UV monomer HDDA, polyurethane modified acrylic acid UV resin with improved hardness, NVP monomer, crosslinking assistant, polyurethane modified acrylic acid UV resin with improved toughness and photoinitiator, and finally the surface treatment step is completed through curing.
The polyurethane modified acrylic UV resin with improved hardness is difunctional polyurethane modified acrylic UV resin.
The polyurethane modified acrylic UV resin with improved toughness is a nine-functional polyurethane modified acrylic UV resin.
In the surface treatment step, the two times of curing are all cured by adopting an LED lamp.
After the technical scheme is adopted, the production process of the composite board mobile phone rear cover with the texture on the front surface of the invention has the advantages that the primer has affinity to the acrylic board through the specific primer formula, so that the adhesive force between the primer and the acrylic board is strong, a UV embossed texture layer can be formed on the primer, the UV adhesive of the UV embossed texture has affinity effect with the primer, the UV embossed texture layer is not easy to separate from the primer, the front surface (i.e. PMMA surface) of the whole composite board mobile phone rear cover can form a texture layer, the front surface and the reverse surface are both provided with texture layers, the visual effect of double textures is achieved, the stereoscopic impression of the whole texture is higher, the hardness of the whole composite board mobile phone rear cover can reach 7-8H by using the specific UV adhesive ratio, the hardness can be adjusted according to the needs of customers, the processing is flexible, and finally, the UV texture on the front surface is transferred by adopting the pressure, can make different textures according to the customer needs, like effects such as wood grain, dermatoglyph, make the surface texture of whole composite sheet cell-phone back lid abundant, very pleasing to the eye, easily marketing, and the user can touch out unevenness's texture layer, sense of touch preferred.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
The invention relates to a production process of a composite board mobile phone rear cover with texture on the front surface, which comprises the following steps: 1) taking a composite board with one side being a PC side and the other side being a PMMA side, 2) forming a LOGO layer, 3) forming a UV texture layer, 4) forming an electroplating layer, 5) forming a pattern printing layer, 6) carrying out surface treatment, and 7) carrying out CNC forming.
The innovation of the invention is that: the surface treatment step sequentially comprises front face spraying treatment and embossing transfer printing treatment, namely the front face spraying treatment is firstly carried out on the PMMA face, the front face spraying treatment is carried out on a spraying machine for hanging the composite plate through a hanging frame, the spraying machine sprays a layer of primer on the PMMA face of the composite plate in a top-down mode, and when the spraying treatment is carried out, 2CM excess materials are reserved from the effective area to the edge of the composite plate in a spraying mode, so that the PC face can be prevented from being sprayed.
The primer mainly comprises hexa-functionality polyurethane acrylate resin, difunctional polyurethane acrylic resin and butyl acetate, wherein the weight ratio of the hexa-functionality polyurethane acrylate resin to the difunctional polyurethane acrylic resin is 1: 4.5-5, the bifunctional polyurethane acrylic resin accounts for 40-45% of the total weight, preferably 40% of the total weight, and the hexafunctional polyurethane acrylic resin accounts for 8.5 of the total weight, the primer is cured after the spraying to form a cured primer layer, and the LED lamp is adopted for illumination curing during curing;
the embossing transfer printing treatment is to carry out UV embossing transfer printing in a mode of point-coating UV glue on a curing primer layer, a front UV texture layer is formed on the curing primer layer, the UV glue is cured by adopting LED lamp light irradiation, the surface treatment step is completed after curing, the front side of the rear cover of the composite board mobile phone processed by CNC finally has textures, and the back side also has textures, so that the double-texture effect is formed.
In the invention, the polyurethane modified acrylic UV resin with improved hardness is difunctional polyurethane modified acrylic UV resin, and the polyurethane modified acrylic UV resin with improved toughness is nine-functional polyurethane modified acrylic UV resin.
According to the production process of the composite board mobile phone rear cover with the texture on the front side, when the UV glue is matched, the hardness and the wear resistance of the UV glue can be adjusted through the matching of the acrylate resin, the UV monomer HDDA and the polyurethane modified acrylic UV resin with the improved hardness, the adhesive force of the UV glue can be improved by using the NVP monomer, and the toughness and the adhesive force of the UV glue can be improved by using the polyurethane modified acrylic UV resin with the improved toughness.
After the technical scheme is adopted, the adhesion force of the bifunctional polyurethane acrylic resin to the composite board, the dilution of butyl acetate and the biting force to the composite board are utilized in the primer prepared by the inventor, so that the adhesion effect of the whole primer to the composite board is excellent, the adhesion force to the composite board is improved, a substrate is provided for embossing treatment, the hardness of the primer can be improved by matching with the bifunctional polyurethane acrylic resin, the primer formula with the specific formula is adopted, the substrate is provided during embossing treatment, the substrate has affinity to acrylic boards, the adhesion force is strong, the adhesion force is not separated, and the existence of the substrate enables the PMMA surface to be subjected to UV embossing treatment, and the bifunctional polyurethane modified acrylic UV resin in the UV paint enables the bonding force between the UV paint and the primer to be excellent during UV embossing treatment, the composite board mobile phone rear cover is not easy to separate, a texture layer can be formed on the front surface (namely the PMMA surface) of the whole composite board mobile phone rear cover, texture layers are arranged on the front surface and the back surface of the composite board mobile phone rear cover, the visual effect of double textures is achieved, the stereoscopic impression of the whole textures is high, the hardness of the whole composite board mobile phone rear cover can reach 7-8H by utilizing a specific UV glue ratio, the hardness is high, the hardness can be adjusted according to the adaptation required by a client, the processing is flexible, finally, the front UV textures are subjected to pressure transfer printing, different textures can be made according to the requirement of the client, such as wood grains, dermatoglyph and the like, the surface textures of the whole composite board mobile phone rear cover are rich, the composite board mobile phone rear cover is very attractive, the market promotion is easy, and a user can touch out the uneven texture layer, so that the touch feeling is good.
The above-mentioned embodiments do not limit the production method of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (4)
1. A production process of a composite board mobile phone rear cover with texture on the front surface comprises the following steps: 1) taking a composite board with one side being a PC side and the other side being a PMMA side, 2) forming a LOGO layer, 3) forming a UV texture layer, 4) forming an electroplating layer, 5) forming a pattern printing layer, 6) carrying out surface treatment, and 7) carrying out CNC forming, wherein the steps of forming the LOGO layer, forming the UV texture layer, forming the electroplating layer and carrying out CNC forming adopt a known common method; the method is characterized in that: the surface treatment step sequentially comprises front face coating treatment and embossing transfer printing treatment, wherein a layer of primer is coated on the PMMA surface of the composite board from top to bottom in a hanging mode in the front face coating treatment, the primer mainly comprises hexafunctionality polyurethane acrylate resin, difunctional polyurethane acrylic resin and butyl acetate, and the weight ratio of the hexafunctionality polyurethane acrylate resin to the difunctional polyurethane acrylic resin is 1: 5-5.5 percent of difunctional polyurethane acrylic resin accounting for 40-45 percent of the total weight, and curing the primer after spray coating to form a cured primer layer;
in the embossing and transfer printing treatment, UV embossing and transfer printing are carried out on the cured primer layer in a mode of spot coating of UV glue, a front surface UV texture layer is formed on the cured primer layer, and the UV glue is finally cured to finish the surface treatment step by acrylate resin, a UV monomer HDDA, polyurethane modified acrylic acid UV resin with improved hardness, an NVP monomer, a crosslinking assistant, polyurethane modified acrylic acid UV resin with improved toughness and a photoinitiator.
2. The production process of the composite board mobile phone rear cover with the texture on the front surface, according to claim 1, is characterized in that: the polyurethane modified acrylic UV resin with improved hardness is difunctional polyurethane modified acrylic UV resin.
3. The production process of the composite board mobile phone rear cover with the texture on the front surface, according to claim 1, is characterized in that: the polyurethane modified acrylic UV resin with improved toughness is a nine-functional polyurethane modified acrylic UV resin.
4. The production process of the composite board mobile phone rear cover with the texture on the front surface, according to claim 1, is characterized in that: in the surface treatment step, the two times of curing are all cured by adopting an LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968163.9A CN113858668A (en) | 2021-08-23 | 2021-08-23 | Production process of composite board mobile phone rear cover with texture on front surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110968163.9A CN113858668A (en) | 2021-08-23 | 2021-08-23 | Production process of composite board mobile phone rear cover with texture on front surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113858668A true CN113858668A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110968163.9A Pending CN113858668A (en) | 2021-08-23 | 2021-08-23 | Production process of composite board mobile phone rear cover with texture on front surface |
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| CN (1) | CN113858668A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474917A (en) * | 2022-03-11 | 2022-05-13 | 深圳市锦瑞新材料股份有限公司 | Composite board structure and manufacturing method thereof |
| CN115403996A (en) * | 2022-09-05 | 2022-11-29 | 惠州市全胜德新材料有限公司 | UV external texture spraying glue and application method thereof |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108276900A (en) * | 2018-02-28 | 2018-07-13 | 湖南松井新材料股份有限公司 | Plate coating system and the metalwork product with imitative ceramic effect |
| CN112969325A (en) * | 2021-02-24 | 2021-06-15 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
| CN113059938A (en) * | 2021-03-24 | 2021-07-02 | Oppo广东移动通信有限公司 | Shell, manufacturing method thereof and electronic equipment |
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2021
- 2021-08-23 CN CN202110968163.9A patent/CN113858668A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108276900A (en) * | 2018-02-28 | 2018-07-13 | 湖南松井新材料股份有限公司 | Plate coating system and the metalwork product with imitative ceramic effect |
| CN112969325A (en) * | 2021-02-24 | 2021-06-15 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
| CN113059938A (en) * | 2021-03-24 | 2021-07-02 | Oppo广东移动通信有限公司 | Shell, manufacturing method thereof and electronic equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474917A (en) * | 2022-03-11 | 2022-05-13 | 深圳市锦瑞新材料股份有限公司 | Composite board structure and manufacturing method thereof |
| CN115403996A (en) * | 2022-09-05 | 2022-11-29 | 惠州市全胜德新材料有限公司 | UV external texture spraying glue and application method thereof |
| 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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