CN114516232A - Nano printing process for magnesium alloy shell - Google Patents
Nano printing process for magnesium alloy shell Download PDFInfo
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- CN114516232A CN114516232A CN202210159509.5A CN202210159509A CN114516232A CN 114516232 A CN114516232 A CN 114516232A CN 202210159509 A CN202210159509 A CN 202210159509A CN 114516232 A CN114516232 A CN 114516232A
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- substrate
- processing surface
- magnesium alloy
- decorative pattern
- pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/28—Printing on other surfaces than ordinary paper on metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/008—Sequential or multiple printing, e.g. on previously printed background; Mirror printing; Recto-verso printing; using a combination of different printing techniques; Printing of patterns visible in reflection and by transparency; by superposing printed artifacts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0036—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers dried without curing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1733—Decalcomanias applied under pressure only, e.g. provided with a pressure sensitive adhesive
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a nano printing process for a magnesium alloy shell. The method comprises the following steps: the method comprises the following steps: providing a substrate, and carrying out formation treatment on the surface of the substrate to obtain a first processing surface; step two: screen printing is carried out on the first processing surface by utilizing a screen printing plate made of a photoplotting film and matching with nano solution type ink to form a decorative pattern layer, and drying is carried out, so that a second processing surface is obtained; step three: smearing the nanoscale UV type printing ink on a daughter board with a nanoscale pattern, transferring the pattern to the second processing surface in an impressing mode to form a UV layer with hand feeling, and curing to obtain a third processing surface; step four: coating a PE film on the third processing surface to form a protective layer to obtain a final nanometer decorative pattern; step five: and stamping and forming the substrate with the nanoscale decorative pattern to form the shape of the product shell. The decorative patterns on the shell of the electronic product are firm and are not easy to fall off and wear, the manufacturing cost is reduced, and the environment-friendly effect is good.
Description
Technical Field
The invention relates to the field of metal surface decoration processes for metal shells of electronic products, pen-on A \ B \ C \ D pieces, TV face frames, TV bases, display face frames, display bases and the like, in particular to a magnesium alloy shell nano-printing process.
Background
With the development of electronic technology, electronic products such as notebook computers, smart phones and household appliances become more and more essential articles in people's lives, people not only have higher and higher requirements on the performance of the electronic products, but also have higher requirements on the appearance of the electronic products while meeting the high performance, and a smart phone or a notebook computer with an ultra-dazzling appearance is worthy of excitation for many people.
In order to meet more requirements of users on product appearance, manufacturers design various electronic product shells and manufacture various patterns on the electronic product shells, but the following defects exist in the traditional processing technology:
firstly, a thin film with exquisite patterns is adhered to a processed and formed shell, various patterns can be obtained at will, but the adhered patterns are easy to wear and fall off, the service life is short, and the metal feeling is lacked.
Secondly, patterns are directly obtained on the shell of the electronic product through processes such as wire drawing, anodic oxidation and the like, but the patterns obtained through the processes such as wire drawing and the like are single in type, are not environment-friendly and are difficult to meet diversified requirements of customers.
And thirdly, more kinds of patterns with more exquisite and stronger stereoscopic impression can be obtained through the surface printing process, the patterns can have touch feeling, but the screen printing process is not used for surface decoration of the metal shell of the electronic product at present, and the patterns obtained by the existing printing process are easy to separate from the metal substrate in the shell forming process or the using process, so that the appearance of the electronic product is influenced.
And fourthly, through surface anodic treatment, the process is limited to wire drawing, sand blasting and other effects at present, good appearance decoration cannot be obtained, the process is complex, the process has great pollution, and the manufacturing cost is high.
Therefore, the surface decoration treatment process which can obtain various exquisite, colorful and touch patterns, is light in weight and convenient to carry, can reduce the manufacturing cost of the electronic product shell, is environment-friendly is provided, and the surface decoration treatment process becomes the requirement of electronic products, particularly the surface decoration of the electronic product shell made of metal materials.
Disclosure of Invention
In order to solve the technical problems, the invention provides a magnesium alloy shell nano-printing process, which solves the problems of complex printing process, high cost and easy abrasion and falling of patterns of electronic product shells.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a magnesium alloy shell nano-printing process comprises the following steps:
the method comprises the following steps: providing a substrate, and carrying out formation treatment on the surface of the substrate to obtain a first processing surface;
step two: screen printing is carried out on the first processing surface by utilizing a screen printing plate made of a photoplotting film and matching with nano solution type ink to form a decorative pattern layer, and drying is carried out, so that a second processing surface is obtained;
step three: smearing the nanoscale UV type printing ink on a daughter board with a nanoscale pattern, transferring the pattern to the second processing surface in an impressing mode to form a UV layer with hand feeling, and curing to obtain a third processing surface;
step four: coating a layer of PE film with the thickness of 0.05-0.1mm on the third processing surface to form a protective layer, and obtaining a final nano-scale decorative pattern;
step five: and stamping and forming the substrate with the nanoscale decorative pattern to form the shape of the product shell.
The technical scheme is realized, one substrate is selected, the adhesive force of the surface of the substrate is increased through formation treatment, the required decorative pattern is transferred to the substrate on the surface of the substrate after the formation treatment in a screen printing mode, a UV layer with hand feeling is obtained on the substrate with the decorative pattern in an imprinting mode, a PE film protective layer is coated on the UV layer, and the substrate is punched to obtain the required shell shape.
As a preferable scheme of the invention, in the first step, the substrate is made of a magnesium-aluminum alloy material, and a static removing spray gun is used to remove static electricity on the surface before processing, so as to clean dust and impurities on the substrate.
By the technical scheme, the shell is lighter and portable. In order to prevent the decorative pattern from generating fine burrs during printing, static electricity is removed from the surface of the substrate by a static electricity removing spray gun before processing, so that dust or impurities are prevented from being adsorbed on the surface of the substrate and being difficult to remove during cleaning, and the printing quality of the decorative pattern is prevented from being influenced.
As a preferable scheme of the present invention, in the first step, the chemical conversion treatment specifically includes degreasing, water washing, acid washing or alkali washing, neutralization, chemical solution treatment, water washing and drying the substrate surface.
By adopting the technical scheme, the adhesive force of the decorative pattern on the surface of the substrate can be enhanced, and the falling off in the processing process can be avoided.
As a preferable scheme of the invention, in the second step, the screen plate adopts 300-420 meshes, the film thickness is 10-25um, the decorative pattern is printed on the substrate by the screen printer, and after the decorative pattern is printed on the substrate, the decorative pattern is dried at 150 ℃.
The technical scheme is realized, the light-painted film with high-definition patterns is selected according to the product requirements, the specification of the mesh is 300-420 meshes, the film thickness is 10-25 micrometers, a full-automatic or semi-automatic screen printer can be adopted for printing operation, after printing, a magnifier which is more than 60 times is used for checking the flatness and the saturation of the patterns and whether the patterns have abnormal conditions such as broken lines, saw teeth, uneven color and the like, and finally, the patterns are dried at the high temperature of 150 ℃ to complete the screen printing.
As a preferred scheme of the present invention, in the third step, the daughter board is manufactured to manufacture a nano-scale imprinting mother board by a carving mode, and the mother board is copied to obtain the nano-scale imprinting mother board; and stamping the nanoscale pattern of the daughter board on the substrate by using a stamping machine, baking the daughter board by using a UV (ultraviolet) oven with the energy of 1000-1200mj, and curing the daughter board at 150 ℃.
By the technical scheme, the decorative patterns are reinforced on the surface of the substrate, so that the follow-up substrate is prevented from being easily separated from the substrate in the forming or using process, and the appearance of an electronic product is influenced.
As a preferable aspect of the present invention, in the fourth step, a PE film of about 0.05 to 0.1mm is applied to the third processing surface by using a roller film applicator.
The technical scheme is realized to protect the surface of a product, and the film layer has moderate viscosity so as to avoid falling off in the stamping or CNC process.
As a preferable scheme of the invention, in the fifth step, after the punching is completed, CNC engraving and CNC milling are performed on the corners of the substrate to form highlight decorative edges, and the positions of the cut edges after the forming are subjected to deburring treatment, cleaning and drying.
The technical scheme is realized to improve the aesthetic degree of the shell and the use feeling of a user.
In a preferred embodiment of the present invention, the substrate is subjected to an electrophoresis treatment to match the color tone of the decorative pattern.
The technical scheme is realized to obtain the patterns with rich colors and exquisite colors.
In summary, the invention has the following beneficial effects: selecting a substrate, increasing the adhesive force of the surface of the substrate through formation treatment, transferring the required decorative pattern to the substrate on the surface of the substrate after the formation treatment in a screen printing mode, then obtaining a UV layer with hand feeling on the substrate with the decorative pattern in a stamping mode, coating a PE film protective layer on the UV layer, and stamping the substrate to obtain the required shell shape. Through the arrangement, the electronic product shell is more exquisite, rich in color, light in weight, convenient to carry, touch, firm in decorative pattern, not easy to drop and wear, low in manufacturing cost and good in environmental protection effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Examples
As shown in FIG. 1, the invention relates to a magnesium alloy shell nano-printing process, which comprises the following steps:
the method comprises the following steps: a substrate is provided, and a chemical treatment is performed on the surface of the substrate to obtain a first processing surface.
In the first step, the substrate is made of magnesium-aluminum alloy, and static electricity on the surface is removed by a static removing spray gun before processing so as to clean dust and impurities on the substrate.
Wherein the magnesium alloy is an alloy based on magnesium. The method is characterized in that: the aluminum alloy has the advantages of small density (about 1.8g/cm 3), high strength, large elastic modulus, good heat dissipation, good shock absorption, larger impact load bearing capacity than aluminum alloy, and good organic matter and alkali corrosion resistance. The main alloy elements comprise aluminum, zinc, manganese, cerium, thorium, a small amount of zirconium or cadmium and the like, so that the shell is lighter and is convenient to carry.
Meanwhile, in order to prevent the decorative pattern from generating fine burrs during printing, static electricity is removed from the surface of the substrate by using a static electricity removing spray gun before processing, so that dust or impurities are prevented from being adsorbed on the surface of the substrate and being difficult to remove during cleaning, and the printing quality of the decorative pattern is prevented from being influenced.
In the above, the formation treatment is specifically degreasing, washing with water, acid or alkali washing, neutralization, chemical liquid treatment, washing with water and drying, and can enhance the adhesion of the decorative pattern on the surface of the substrate and prevent the decorative pattern from falling off during the processing.
Step two: and (3) screen printing is carried out on the first processing surface by utilizing a screen printing plate made of a photoplotting film and matching with the nano solution type ink to form a decorative pattern layer, and drying is carried out, so that a second processing surface is obtained.
In the second step, the screen printing plate adopts 300-420 meshes, the film thickness is 10-25um, the decorative pattern is printed on the substrate through the screen printing machine, and drying is carried out at 150 ℃. Selecting a high-definition light-drawing film according to the product requirement, adopting a full-automatic or semi-automatic screen printing machine to perform printing operation, using a magnifying glass with the magnification of more than 60 times to check the flatness and the saturation of the pattern and whether the pattern has abnormalities such as broken lines, saw-toothed shapes, uneven colors and the like after printing, and finally drying at the high temperature of 150 ℃ to finish screen printing.
Step three: and smearing the nanoscale UV type ink on the daughter board with the nanoscale pattern, transferring the pattern to the second processing surface in an impressing mode to form a UV layer with hand feeling, and curing to obtain a third processing surface.
In the third step, the daughter board is manufactured to manufacture a nano-scale imprinting mother board in a carving mode, the mother board is copied, the nano-scale pattern of the daughter board is imprinted on the substrate by adopting an imprinting machine, a magnifying glass which is more than 60 times is used for checking the flatness and the saturation of the pattern and whether the pattern has abnormal conditions such as broken lines, saw-toothed shapes, uneven colors and the like after printing, the pattern is baked by a UV (ultraviolet) oven with the energy of 1000-1200mj, and then the pattern is cured at 150 ℃, so that the decorative pattern is reinforced on the surface of the substrate, and the subsequent substrate is prevented from being easily separated from the substrate in the molding or using process, and the appearance of an electronic product is influenced.
Step four: and coating a PE film with the thickness of 0.05-0.1mm on the third processing surface to form a protective layer, and obtaining the final nano decorative pattern.
In the fourth step, a roller film laminator is used for coating the PE film of about 0.05-0.1mm on the third processing surface so as to protect the surface of the product, and the film layer has moderate viscosity so as to avoid falling off in the stamping or CNC process.
Step five: and stamping and forming the substrate with the nanoscale decorative pattern to form the shape of the product shell.
And step five, carrying out CNC engraving and CNC milling on the corners of the substrate to obtain highlight decorative edges after the stamping is finished, and carrying out deburring treatment, cleaning and drying on the formed trimming positions to improve the aesthetic degree of the shell and the use experience of a user.
The substrate is subjected to electrophoresis treatment to be matched with the color tone of the decorative pattern, so that the pattern with rich colors and exquisite color is obtained.
In the method, a substrate is selected, the adhesion force of the surface of the substrate is increased through formation treatment, the required decorative pattern is transferred to the substrate on the surface of the substrate after the formation treatment in a screen printing mode, a UV layer with hand feeling is obtained on the substrate with the decorative pattern in an imprinting mode, a PE film protective layer is coated on the UV layer, and the substrate is punched to obtain the required shell shape. Through the arrangement, the electronic product shell is more exquisite, rich in color, light in weight, convenient to carry, touch, firm in decorative pattern, not easy to drop and wear, low in manufacturing cost and good in environmental protection effect.
The invention has the beneficial effects that: the invention makes the decorative pattern not easy to wear and fall off by carrying out chemical treatment on the substrate, and has longer service life. Before processing, the optical drawing film with the required pattern can be selected according to the requirements of consumers, and different decorative patterns can be manufactured to meet the diversified requirements of customers. The decorative patterns are printed on the substrate through screen printing, the UV layer with hand feeling is impressed on the surface of the printed pattern layer, the decorative patterns which are more exquisite and have stronger three-dimensional sense can be obtained, the patterns have obvious touch sense, the patterns are not easy to fall off, and the appearance attractiveness of the electronic product is improved. The manufacturing process is simple, and the printing of the shell of the electronic product can be realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A magnesium alloy shell nano-printing process is characterized by comprising the following steps:
the method comprises the following steps: providing a substrate, and carrying out formation treatment on the surface of the substrate to obtain a first processing surface;
step two: screen printing is carried out on the first processing surface by utilizing a screen printing plate made of a photoplotting film and matching with nano solution type ink to form a decorative pattern layer, and drying is carried out, so that a second processing surface is obtained;
step three: smearing the nanoscale UV type printing ink on a daughter board with a nanoscale pattern, transferring the pattern to the second processing surface in an impressing mode to form a UV layer with hand feeling, and curing to obtain a third processing surface;
step four: coating a layer of PE film with the thickness of 0.05-0.1mm on the third processing surface to form a protective layer, and obtaining a final nano-scale decorative pattern;
step five: and stamping and forming the substrate with the nanoscale decorative pattern to form the shape of the product shell.
2. The magnesium alloy shell nano-printing process as claimed in claim 1, wherein in the first step, the substrate is made of magnesium aluminum alloy, and static electricity on the surface is removed by a static removing spray gun before processing, so as to clean dust and impurities on the substrate.
3. The magnesium alloy shell nano printing process according to claim 1, wherein in the first step, the chemical conversion treatment specifically comprises degreasing, water washing, acid washing or alkali washing, neutralization and chemical solution treatment on the surface of the substrate, and finally water washing and drying.
4. The magnesium alloy shell nano printing process according to claim 1, wherein in the second step, the screen is 300-420 mesh, the film thickness is 10-25um, the decorative pattern is printed on the substrate by a screen printer, and after completion, the decorative pattern is dried at 150 ℃.
5. The magnesium alloy shell nano printing process according to claim 1, wherein in the third step, the daughter board is manufactured by manufacturing a nano-scale imprinting mother board in an engraving manner, and the mother board is copied to obtain the magnesium alloy shell nano printing process; and stamping the nanoscale pattern of the daughter board on the substrate by using a stamping machine, baking the daughter board by using a UV (ultraviolet) oven with the energy of 1000-1200mj, and curing the daughter board at 150 ℃.
6. The magnesium alloy shell nanoimprint lithography process of claim 1, wherein in the fourth step, a PE film of about 0.05-0.1mm is applied to the third processing surface by means of a roller laminator.
7. The magnesium alloy shell nano-printing process according to claim 1, wherein in the fifth step, after the punching, the corners of the substrate are subjected to CNC engraving and CNC milling to form high-gloss decorative edges, and the trimming positions after the forming are subjected to deburring treatment, cleaning and drying.
8. The magnesium alloy housing nanoimprint lithography process of claim 1, characterized in that the substrate is matched to the color tone of the decorative pattern by electrophoretic processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210159509.5A CN114516232A (en) | 2022-02-21 | 2022-02-21 | Nano printing process for magnesium alloy shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210159509.5A CN114516232A (en) | 2022-02-21 | 2022-02-21 | Nano printing process for magnesium alloy shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114516232A true CN114516232A (en) | 2022-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210159509.5A Withdrawn CN114516232A (en) | 2022-02-21 | 2022-02-21 | Nano printing process for magnesium alloy shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114516232A (en) |
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2022
- 2022-02-21 CN CN202210159509.5A patent/CN114516232A/en not_active Withdrawn
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Application publication date: 20220520 |
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