CN218257261U - Full-opening screen printing plate - Google Patents
Full-opening screen printing plate Download PDFInfo
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- CN218257261U CN218257261U CN202221398422.5U CN202221398422U CN218257261U CN 218257261 U CN218257261 U CN 218257261U CN 202221398422 U CN202221398422 U CN 202221398422U CN 218257261 U CN218257261 U CN 218257261U
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Abstract
The utility model relates to a full-open screen printing plate, which comprises a silk screen, a printing plate and a protective film, wherein the silk screen is used for being tightened and fixed with a screen frame, the printing plate is arranged in the internal area of the silk screen, is high temperature resistant and is not easy to deform, and the protective film is arranged on the lower surface of the printing plate; the printing plate and the protective film are provided with printing openings according to the requirement of a printing pattern. An object of the utility model is to provide a full open-top half tone and manufacturing method thereof can realize the design of full opening, improve half tone life-span, reduce half tone cost, can not harm the battery in the printing process simultaneously.
Description
Technical Field
The utility model relates to a full open-top half tone.
Background
In the production process of the solar cell, a screen printing plate is required to be used for screen printing to manufacture a silver paste metal electrode grid line, and the method comprises the steps of applying a certain pressure to press the screen printing plate to extrude the electrode paste by using a scraper, so that the electrode paste penetrates through the screen printing plate and is printed on the surface of the cell, and thus an electrode is formed.
In order to increase the area of the solar cell receiving sunlight and reduce the series resistance of the electrodes, the fine grid is made to be thinner and thinner, and the thickness of the fine grid is higher and higher. As shown in fig. 1, in the manufacturing process of a conventional steel wire screen printing plate, due to the reduction of the width of the fine grid, when the silk threads 00 of the screen printing plate are just positioned in the fine grid, the silk threads can block a part of the fine grid, so that the height of the printed grid line is fluctuated and not uniform enough, and the problem of grid blocking and breaking can be caused in a serious situation.
Disclosure of Invention
An object of the utility model is to provide a full open-top half tone can realize the design of full opening, improve half tone life-span, reduce half tone cost, can not harm the battery simultaneously in the printing process.
The purpose of the utility model is realized through the following technical scheme:
a full-opening screen printing plate comprises a screen mesh, a printing plate and a protective film, wherein the screen mesh is used for being tightened and fixed with a screen frame, the printing plate is arranged in the inner area of the screen mesh and is high-temperature resistant and not easy to deform, and the protective film is arranged on the lower surface of the printing plate; and the printing plate and the protective film are provided with printing openings according to the requirement of a printing pattern.
Compare prior art, the utility model has the advantages of:
(1) When grid line printing is carried out, hundred-percent openings are realized, and grid lines with higher height-width ratio and fuller height-width ratio can be obtained after printing, so that the shielding area of the grid lines on the surface of a battery is reduced, the resistance of the grid lines of the battery is reduced, and the efficiency of the battery is improved;
(2) The printing service life of the utility model is much longer than that of the stainless steel wire net, and the cost is lower, thereby greatly reducing the production cost of the battery;
(3) The screen printing plate directly contacts with the battery, and the battery is easily damaged, and the protective film is laid, so that the screen printing plate is prevented from damaging the battery.
Drawings
FIG. 1 is a schematic structural diagram of a conventional wire mesh grid line region;
FIG. 2 is a step of preparing a full-open screen according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a stainless steel sheet provided in step S1 of the present invention;
FIG. 4 is a schematic cross-sectional view of a plastic film formed on the lower surface of a stainless steel sheet in step S2 of the preparation of the present invention;
FIG. 5 is a schematic structural view of the bonding connection between the stainless steel sheet coated with the film S2 and the organic wire mesh cloth in step S3 of the present invention;
FIG. 6 is a schematic structural view showing that the stainless steel sheet and the organic wire mesh cloth bonded and connected in step S4 of the present invention are stretched according to a predetermined tension and fixed on the mesh frame;
fig. 7 is a schematic cross-sectional view of the stainless steel sheet and the organic silk screen cloth which are bonded and connected in step S3 in the preparation process of the present invention, stretched according to a predetermined tension and fixed on the screen frame;
fig. 8 is a schematic structural view of the stainless steel sheet after cutting the 4 meshes by laser in step S5 of the preparation process to form the printing grid line;
FIG. 9 is an enlarged view of the middle area of the stainless steel sheet after S5 sheets of mesh are cut by laser to form a printed grid pattern in the preparation process of the present invention;
fig. 10 is a schematic cross-sectional view of an embodiment of the bonding connection of the stainless steel sheet coated with the film S2 and the organic wire mesh cloth in step S3 of the present invention.
Detailed Description
A full-opening screen printing plate comprises a screen mesh, a printing plate and a protective film, wherein the screen mesh is used for being tightened and fixed with a screen frame, the printing plate is arranged in the inner area of the screen mesh and is high-temperature resistant and not easy to deform, and the protective film is arranged on the lower surface of the printing plate; the printing plate and the protective film are provided with printing openings according to the requirement of a printing pattern.
The thickness of protection film is 3-15um.
The material of the protective film is one of polyamide, polyimide, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyethylene, polypropylene, acrylonitrile-butadiene-styrene copolymer, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyvinylidene fluoride and polytetrafluoroethylene.
The thickness of silk screen is 20-60um, and the thickness of printing plate is 5-20um.
And a hollow part matched with the printing plate is arranged in the inner area of the silk screen.
The inner edge of the silk screen is overlapped, lapped and adhered with the outer edge of the printing plate; the width of the overlap region is 5-20mm.
The silk screen is an organic silk screen cloth, the printing plate is a stainless steel sheet, and the protective film is a plastic film.
A method for manufacturing a full-opening screen printing plate comprises the following steps,
A. manufacturing a layer of protective film on the lower surface of the cleaned printing plate;
B. fixedly connecting the printing plate with the silk screen;
C. tightening and fixing the silk screen and the screen frame;
D. and hollowing out the printing plate and the protective film according to the printing pattern to form a printing opening.
And C, cleaning the printing plate before the step A, specifically cleaning the printing plate by using atmospheric plasma, wherein the water contact angle of the surface of the cleaned printing plate is less than 30 degrees.
The specific method of the step A is to stick a protective film on the lower surface of the printing plate, or to coat a layer of protective solution on the lower surface of the printing plate and form the protective film after curing.
The step B is specifically that the printing plate and the silk screen are bonded and fixedly connected. In one scheme, the specific method of the step B is that the inner area of the silk screen is hollow, the outer edge of the printing plate is overlapped with the inner edge of the silk screen for adhesion, and the width of the overlapped area is 5-20mm.
And D, performing laser cutting on the printing plate and the protective film according to the printing pattern to form a printing opening in a hollow manner.
The invention is described in detail below with reference to the drawings and examples of the specification:
as shown in fig. 2, a method for preparing a full-opening screen printing plate of a solar cell includes the following steps:
s1, providing a stainless steel sheet 30;
s2, forming a layer of plastic film 40 on the lower surface of the stainless steel sheet 30;
s3, bonding and connecting the stainless steel sheet 30 with the plastic film 40 formed on the lower surface with the organic wire mesh cloth 20;
s4, stretching a net: stretching the mesh cloth 20 after the step S3 according to a preset tension and fixing the mesh cloth on the mesh frame 10;
s5, laser forming of a grid line: the printed gate line 301 is formed by laser cutting the stainless steel sheet 30 and the plastic film 40.
Example 1, as shown in figures 3-9:
as shown in fig. 3, in step S1, a stainless steel sheet 30 is provided, the thickness of the stainless steel sheet 30 is 10um, and the contact angle of water on the surface of the stainless steel sheet 10 after the stainless steel sheet 30 is cleaned by atmospheric plasma is less than 30 °.
As shown in FIG. 4, a layer of plastic film 40 with adhesive is adhered to the lower surface of the stainless steel sheet 30 in the step S2, the thickness of the adhesive in the PET with adhesive is 3um, and the thickness of the PET with adhesive is 5um.
As shown in fig. 5, the stainless steel sheet 30 having the plastic film 40 formed on the lower surface thereof is adhesively bonded to the organic wire mesh cloth 20 in step S3. In a preferred embodiment, as shown in fig. 10, the inside of the organic wire mesh cloth 20 is hollowed, and the outer edge of the stainless steel sheet 30 is overlapped and adhered to the inner edge of the organic wire mesh cloth 20, wherein the width of the overlapped area is 5-20mm.
As shown in fig. 6 to 7, in step S4, the mesh cloth 20 after S3 is stretched and fixed on the frame 10 at a predetermined tension between 10N and 30N, where fig. 6 is a schematic structural diagram after step S4, and fig. 7 is a cross-sectional diagram after step S4.
As shown in fig. 8, in step S5, a schematic structural view of a printed gate line 301 formed by laser cutting the stainless steel sheet 30 and the plastic film 40,
as shown in fig. 9, in order to form a partial enlarged view of an area of the printed gate line 301, the length W1 of the printed gate line 301 is 10-20mm, and the width W2 is 10-30um.
Example 2:
this example differs from example 1 in that: in the step S2, the plastic film 40 on the lower surface of the stainless steel sheet 30 is formed by coating a layer of polyimide solution and then performing thermal curing, wherein the thickness of the coated polyimide solution is 10-20um, the coated polyimide solution is formed by continuously curing 100-20M, 160-20M, 220-20M, 250-20M and 280-20M, and the thickness of the cured polyimide film is 2-8um.
The utility model adopts the above technical scheme, mainly have following beneficial effect: (1) the grid line printing area is provided with hundreds of openings, and grid lines with higher height-width ratio and plump shape can be obtained after printing, so that the shading area of the grid lines on the surface of the battery is reduced, the resistance of the grid lines of the battery is reduced, and the efficiency of the battery is improved; (2) the printing life of the stainless steel sheet is far longer than that of the stainless steel screen, and the cost of the stainless steel sheet is lower than that of the stainless steel screen, so that the production cost of the battery can be greatly reduced; (3) the stainless steel directly contacts with the battery, damages the battery easily, and the plastic film is laid on the lower surface of the stainless steel sheet, so that the battery is prevented from being damaged by the stainless steel sheet.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A full open half tone screen, its characterized in that: the printing machine comprises a silk screen used for being tightened and fixed with a screen frame, a high-temperature-resistant and non-deformable printing plate arranged in the inner area of the silk screen, and a protective film arranged on the lower surface of the printing plate; and the printing plate and the protective film are provided with printing openings according to the requirement of a printing pattern.
2. The full-open screen printing plate according to claim 1, wherein: the thickness of protection film is 3-15um.
3. The full-open screen printing plate according to claim 1, wherein: the material of the protective film is one of polyamide, polyimide, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyethylene, polypropylene, acrylonitrile-butadiene-styrene copolymer, polyvinyl alcohol, polystyrene, polyvinyl chloride, polyvinylidene fluoride and polytetrafluoroethylene.
4. The full-open screen printing plate according to claim 1, wherein: the thickness of silk screen is 20-60um, and the thickness of printing plate is 5-20um.
5. The full-open screen printing plate according to claim 1, wherein: and a hollow part matched with the printing plate is arranged in the inner area of the silk screen.
6. The full-open screen printing plate according to claim 5, wherein: the inner edge of the silk screen is overlapped, lapped and adhered with the outer edge of the printing plate; the width of the overlap region is 5-20mm.
7. The full-opening screen printing plate according to any one of claims 1 to 6, wherein: the silk screen is an organic silk screen cloth, and the printing plate is a stainless steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221398422.5U CN218257261U (en) | 2022-06-06 | 2022-06-06 | Full-opening screen printing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221398422.5U CN218257261U (en) | 2022-06-06 | 2022-06-06 | Full-opening screen printing plate |
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| Publication Number | Publication Date |
|---|---|
| CN218257261U true CN218257261U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221398422.5U Active CN218257261U (en) | 2022-06-06 | 2022-06-06 | Full-opening screen printing plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834149A (en) * | 2022-06-06 | 2022-08-02 | 福建金石能源有限公司 | Full-opening screen and manufacturing method thereof |
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2022
- 2022-06-06 CN CN202221398422.5U patent/CN218257261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114834149A (en) * | 2022-06-06 | 2022-08-02 | 福建金石能源有限公司 | Full-opening screen and manufacturing method thereof |
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