CN111993758A - Solar cell printing screen and manufacturing process thereof - Google Patents
Solar cell printing screen and manufacturing process thereof Download PDFInfo
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- CN111993758A CN111993758A CN202010944918.7A CN202010944918A CN111993758A CN 111993758 A CN111993758 A CN 111993758A CN 202010944918 A CN202010944918 A CN 202010944918A CN 111993758 A CN111993758 A CN 111993758A
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- screen
- printing
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- printing plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/14—Forme preparation for stencil-printing or silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/34—Screens, Frames; Holders therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/40—Screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
- B41P2215/12—Screens
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The invention provides a manufacturing process of a solar cell printing screen, which is simple in process, the solar cell printing screen prepared by the manufacturing process is long in service life, the obtained printing pattern is clear and complete in display, and the printing quality is good, and the manufacturing process comprises the following steps: step S1, stretching the screen cloth on a screen frame to obtain a preliminary screen printing plate; step S2, attaching a metal foil on the preliminary screen printing plate; step S3, rolling the preliminary screen printing plate attached with the metal foil; and step S4, performing laser cutting on the preliminary screen printing plate subjected to the rolling treatment to obtain a printing screen printing plate with a printing pattern.
Description
Technical Field
The invention relates to the technical field of solar screens, in particular to a manufacturing process of a solar cell printing screen.
Background
The solar cell is a device for directly converting light energy into electric energy through a photochemical effect, and the electric energy generated by the solar cell is mainly collected through grid lines on the surface of the cell and then transmitted to a welding strip through main grid lines for final output. Grid lines on the surface of the solar cell are densely arranged and are slender, so the grid lines are usually formed on the surface of the solar cell in a screen printing mode.
For example, chinese patent publication No. CN107584859A discloses a method for manufacturing a screen printing plate of a solar cell, however, with the wide application of solar cell technology, the requirement for improving the efficiency of the cell is higher and higher, the traditional screen printing plate for printing the solar crystalline silicon cell cannot meet the market demand, the traditional screen printing plate-making process and the traditional flow are more complex, and the requirements on the cleanliness, the temperature and the humidity of the environment are strict, it is made through the processes of screening, coating, printing down, developing, etc., in the printing down process, film is needed, however, due to the influence of the temperature and humidity of the environment, expansion and shrinkage of grid lines on the film, unstable line width and other factors, the problems of virtual printing, grid leakage, thick lines, nodes and the like exist in the finished product manufactured by the screen printing plate, the qualification rate of the battery piece is greatly influenced, and the conversion efficiency of the battery piece is reduced.
The chinese patent publication No. CN110780543A discloses a method for manufacturing a solar cell printing screen, which simplifies the conventional screen plate making process and uses an emulsion to make a printing pattern, however, as the number of screen prints increases, the emulsion is worn due to the long-term use of the screen, which results in poor printing effect of the grid lines, and this change is especially significant in the later stage of the screen, which results in an unsatisfactory service life of the screen.
Disclosure of Invention
Aiming at the problems, the invention provides a manufacturing process of a solar cell printing screen, which is simple in process, the prepared solar cell printing screen has long service life, the obtained printing pattern is clear and complete in display and good in printing quality, and meanwhile, the invention also provides the solar cell printing screen prepared by the process.
The technical scheme is as follows: a manufacturing process of a solar cell printing screen is characterized by comprising the following steps:
step S1, stretching the screen cloth on a screen frame to obtain a preliminary screen printing plate;
step S2, attaching a metal foil on the preliminary screen printing plate;
step S3, rolling the preliminary screen printing plate attached with the metal foil;
and step S4, performing laser cutting on the preliminary screen printing plate subjected to the rolling treatment to obtain a printing screen printing plate with a printing pattern.
Further, step S1 specifically includes the following steps:
step S101, selecting mesh cloth: selecting metal mesh cloth, and reducing the thickness of the mesh cloth through high-pressure rolling treatment;
step S102, stretching a net: spreading the net cloth on a net frame horizontally, spreading the net through a net spreading clamp, and enabling the radial net lines and the latitudinal net lines of the spread net cloth to be parallel to the body direction of the two adjacent sides of the net frame respectively to obtain a preliminary screen printing plate;
step S103, uniform tension of the mesh cloth: rolling the surface of the mesh of the primary screen printing plate to make the surface pressure of the mesh uniform;
step S104, degreasing treatment: degreasing the preliminary screen printing plate by an acid and alkali resistant protective agent;
further, step S2 specifically includes the following steps;
step S201: performing physical roughening treatment on the surface of the metal foil to enhance the bonding strength of the glue and the metal foil;
step S202: coating glue on the preliminary screen printing plate;
step S203: attaching a metal foil sheet on the preliminary screen printing plate, and removing redundant glue;
step S204: and heating and drying the screen printing plate to solidify the glue.
Further, step S4 is specifically as follows:
recording printing pattern information for cutting in a laser;
placing the preliminary screen obtained in the step S3 on a cutting table; and the laser adopts 18w picosecond ultraviolet laser, performs laser cutting on the metal foil on the preliminary screen plate according to a set cutting path, and cuts off the metal foil at the corresponding position to obtain the printing screen plate with the printing pattern.
Further, in step S1, a metal mesh with a mesh number of 250-520 meshes and a wire diameter of 11 um-24 um is selected, and the thickness of the mesh is reduced to 17 um-25 um by high-pressure rolling.
Further, in step S203, the metal foil is attached to the preliminary screen printing plate by using a hot-pressing attachment method, wherein the hot-pressing parameter is 180 ℃, and the hot-pressing parameter is 120kg/C square meter, and the time is 25 to 30 minutes.
Further, in step S2, the glue used is a high temperature thermosetting glue.
Further, in step S3, the rolling manner is: rolling the screen plate for 50 times in the radial direction and 50 times in the latitudinal direction, wherein the rolling pressure is 5N.C square meters, and the depth of a roller is 1000-1200 mu m.
Further, the metal foil is a stainless steel foil or a nickel foil, and the thickness of the metal foil is 5-15 micrometers.
The utility model provides a solar wafer printing half tone which characterized in that: the solar cell printing screen is prepared by the manufacturing process of the solar cell printing screen.
According to the manufacturing process of the solar cell printing screen plate, after the screen plate is stretched, a layer of metal foil is attached to the screen plate, and then cutting is carried out according to the screen plate pattern information in a laser cutting mode to obtain the printing screen plate with the printing pattern;
meanwhile, compared with the printed pattern prepared by adopting a photosensitive emulsion in the prior art, the printed pattern prepared by the metal foil is more wear-resistant, the wear resistance of the screen printing plate is enhanced, the service life of the screen printing plate is effectively prolonged, the conversion efficiency of the solar crystalline silicon cell is ensured, the printing frequency reaches more than several times of that of the traditional screen printing plate, the service life reaches more than 10 ten thousand times, and the purchase cost of the printing screen printing plate of a cell production manufacturer is greatly reduced; meanwhile, the printing pattern is made of the metal foil, the plasticity effect is better, the obtained grid line is clearer and more complete, and the printing quality is obviously improved.
Drawings
Fig. 1 is a schematic flow chart of a manufacturing process of a solar cell printing screen according to 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 some, not all, embodiments of the present invention. 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.
The inventor of the invention researches and discovers that the photosensitive emulsion is used for manufacturing the printing pattern, however, along with the increase of the printing number of the screen printing plate, the photosensitive emulsion is abraded due to the long-term use of the screen printing plate, the printing effect of the grid line is deteriorated, the change is particularly obvious in the later period of the screen printing plate, the service life of the screen printing plate is not ideal enough, and meanwhile, the printing effect of the grid line is also deteriorated after the screen printing plate is used for a long time.
Referring to fig. 1, based on the research, the invention provides a manufacturing process of a solar cell printing screen, which mainly comprises the following steps:
step S1, stretching the screen cloth on a screen frame to obtain a preliminary screen printing plate;
step S2, attaching a metal foil on the preliminary screen printing plate;
step S3, rolling the preliminary screen printing plate attached with the metal foil;
and step S4, performing laser cutting on the preliminary screen printing plate subjected to the rolling treatment to obtain a printing screen printing plate with a printing pattern.
In an embodiment of the present invention, step S1 specifically includes the following steps:
step S101, selecting mesh cloth: selecting metal mesh cloth, reducing the thickness of the mesh cloth through high-pressure rolling treatment, specifically selecting the metal mesh cloth with the mesh number of 250-520 meshes and the wire diameter of 11-24 um, and reducing the thickness of the mesh cloth to 17-25 um through high-pressure rolling treatment;
step S102, stretching a net: spreading the net cloth on a net frame, spreading the net through a net spreading clamp, and enabling the radial net lines and the latitudinal net lines of the net cloth after spreading the net to be parallel to the body direction of two adjacent sides of the net frame respectively to obtain a primary screen printing plate;
step S103, uniform tension of the mesh cloth: rolling the surface of the screen cloth of the preliminary screen printing plate to make the surface pressure of the screen cloth uniform;
step S104, degreasing treatment: and degreasing the preliminary screen printing plate by an acid and alkali resistant protective agent.
In this embodiment, the metal foil used is a stainless steel foil, in other embodiments of the present invention, a nickel foil or other metal suitable for laser cutting may also be used, the thickness of the metal foil is 10 micrometers, and step S2 specifically includes the following steps;
step S201: the surface of the metal foil is subjected to physical roughening treatment, so that the bonding effect of the metal foil and glue can be improved in the subsequent process;
step S202: coating glue on the preliminary screen printing plate, wherein the adopted high-temperature thermosetting glue is polyimide glue;
step S203: attaching a metal foil to the preliminary screen printing plate, attaching the metal foil to the preliminary screen printing plate in a hot-pressing attaching mode, wherein the hot-pressing parameter is 180 ℃, the hot-pressing parameter is 120kg/C square meter, and the time is 25-30 minutes, and then removing redundant glue;
step S204: and heating and drying the screen printing plate to solidify the glue, wherein an industrial oven is adopted for drying due to the higher solidification temperature of the polyimide glue.
In this embodiment, in step S3, the rolling manner is: and rolling the screen printing plate for 50 times in the radial direction and 50 times in the latitudinal direction, wherein the rolling pressure is 5N.C square meters, the depth of a roller is 1000-1200 mu m, and the fatigue can be released by rolling treatment, so that the tension of the screen printing plate is more stable.
In this embodiment, step S4 is specifically as follows:
recording printing pattern information for cutting in a laser;
placing the preliminary screen obtained in the step S3 on a cutting table; and the laser adopts 18w picosecond ultraviolet laser, the cutting parameter laser parameters are different according to the thickness of the metal foil, the laser performs laser cutting on the metal foil on the preliminary screen printing plate according to the set cutting path, and the metal foil at the corresponding position is cut off to obtain the printing screen printing plate with the printing pattern.
In the embodiment, the polyimide glue is used for bonding the metal foil and the screen, has excellent mechanical property and electrical insulation shoes, can be used for a long time in the temperature range of-200 ℃ to 260 ℃, is wear-resistant and has good dimensional stability, and can play a good supporting effect on the printed pattern formed by the metal foil when being used in the solar cell printing screen, the performance of the polyimide glue can support the long-term use of the printing screen, so that the printing quality is kept unchanged for a long time, in addition, although the polyimide glue is used as a high-temperature-resistant adhesive in the conventional use, the polyimide glue is used because the laser cutting mode is adopted to manufacture the printed pattern in the invention, the material is heated to the vaporization temperature quickly by irradiating the material with high-power-density laser beams, holes are formed by evaporation, and the material moves along with the light beams, the holes continuously form narrow-width cutting seams for manufacturing the grid lines, the implementation of a laser cutting process cannot be influenced by the high-temperature resistance of the polyimide glue, the polyimide glue is easily gasified at the high temperature when the laser cutting process is implemented, the polyimide glue is easily gasified and does not remain, therefore, the grid lines with good shapes can be processed, and the printing quality of the printing screen is good when the printing screen is used.
In the invention, the metal foil replaces the photosensitive emulsion, and the printed pattern obtained by manufacturing the metal foil is more wear-resistant compared with the printed pattern obtained by preparing the photosensitive emulsion in the prior art, so that the wear resistance of the screen printing plate is enhanced, the service life of the screen printing plate is effectively prolonged, the conversion efficiency of the solar crystalline silicon cell is ensured, the printing frequency reaches more than several times of that of the traditional screen printing plate, the service life reaches more than 10 thousands of times, and the purchase cost of the printing screen printing plate of a cell production manufacturer is greatly reduced; meanwhile, the printing pattern is made of the metal foil, the plasticity effect is better, the obtained grid line is clearer and more complete, and the printing quality is obviously improved.
According to the manufacturing process of the solar cell printing screen plate, after the screen plate is stretched, a layer of metal foil is attached to the screen plate, and then cutting is carried out according to screen plate pattern information in a laser cutting mode to obtain the printing screen plate with the printing pattern.
In addition, the embodiment of the invention also provides the solar cell piece printing screen prepared by the manufacturing process.
In describing representative examples of the present invention, the specification has presented the method and/or process of operating the invention as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps are possible, as will be appreciated by those skilled in the art. Accordingly, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Moreover, the scope of the claims directed to the method and/or process of the present invention should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the present invention.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A manufacturing process of a solar cell printing screen is characterized by comprising the following steps:
step S1, stretching the screen cloth on a screen frame to obtain a preliminary screen printing plate;
step S2, attaching a metal foil on the preliminary screen printing plate;
step S3, rolling the preliminary screen printing plate attached with the metal foil;
and step S4, performing laser cutting on the preliminary screen printing plate subjected to the rolling treatment to obtain a printing screen printing plate with a printing pattern.
2. The manufacturing process of the solar cell printing screen according to claim 1, wherein the step S1 specifically comprises the following steps:
step S101, selecting mesh cloth: selecting metal mesh cloth, and reducing the thickness of the mesh cloth through high-pressure rolling treatment;
step S102, stretching a net: spreading the net cloth on a net frame horizontally, spreading the net through a net spreading clamp, and enabling the radial net lines and the latitudinal net lines of the spread net cloth to be parallel to the body direction of the two adjacent sides of the net frame respectively to obtain a preliminary screen printing plate;
step S103, uniform tension of the mesh cloth: rolling the surface of the mesh of the primary screen printing plate to make the surface pressure of the mesh uniform;
step S104, degreasing treatment: and degreasing the preliminary screen printing plate by an acid and alkali resistant protective agent.
3. The manufacturing process of the solar cell printing screen according to claim 1, wherein the step S2 specifically comprises the following steps;
step S201: performing physical roughening treatment on the surface of the metal foil to enhance the bonding strength of the glue and the metal foil;
step S202: coating glue on the preliminary screen printing plate;
step S203: attaching a metal foil sheet on the preliminary screen printing plate, and removing redundant glue;
step S204: and heating and drying the screen printing plate to solidify the glue.
4. The manufacturing process of the solar cell printing screen according to claim 1, wherein the step S4 is as follows:
recording printing pattern information for cutting in a laser;
placing the preliminary screen obtained in the step S3 on a cutting table; and the laser adopts 18w picosecond ultraviolet laser, performs laser cutting on the metal foil on the preliminary screen plate according to a set cutting path, and cuts off the metal foil at the corresponding position to obtain the printing screen plate with the printing pattern.
5. The manufacturing process of the solar cell printing screen according to claim 2, wherein the manufacturing process comprises the following steps: in step S1, a metal mesh with a mesh number of 250-520 meshes and a wire diameter of 11-24 um is selected, and the thickness of the mesh is reduced to 17-25 um by high-pressure rolling.
6. The manufacturing process of the solar cell printing screen according to claim 3, wherein the manufacturing process comprises the following steps: in step S203, the metal foil is attached to the preliminary screen printing plate by adopting a hot-pressing attaching mode, wherein the hot-pressing parameter is 180 ℃, the temperature is 120kg/C square meter, and the time is 25-30 minutes.
7. The manufacturing process of the solar cell printing screen according to claim 3, wherein the manufacturing process comprises the following steps: in step S2, the glue used is a high temperature thermosetting glue.
8. The manufacturing process of the solar cell printing screen according to claim 3, wherein the manufacturing process comprises the following steps: in step S3, the rolling method is: rolling the screen plate for 50 times in the radial direction and 50 times in the latitudinal direction, wherein the rolling pressure is 5N.C square meters, and the depth of a roller is 1000-1200 mu m.
9. The manufacturing process of the solar cell printing screen according to claim 3, wherein the manufacturing process comprises the following steps: the metal foil is a stainless steel foil or a nickel foil, and the thickness of the metal foil is 5-15 micrometers.
10. The utility model provides a solar wafer printing half tone which characterized in that: the solar cell piece printing screen printing plate is prepared by the manufacturing process of the solar cell piece printing screen printing plate according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010944918.7A CN111993758A (en) | 2020-09-10 | 2020-09-10 | Solar cell printing screen and manufacturing process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010944918.7A CN111993758A (en) | 2020-09-10 | 2020-09-10 | Solar cell printing screen and manufacturing process thereof |
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| CN111993758A true CN111993758A (en) | 2020-11-27 |
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| CN202010944918.7A Pending CN111993758A (en) | 2020-09-10 | 2020-09-10 | Solar cell printing screen and manufacturing process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043798A (en) * | 2021-11-23 | 2022-02-15 | 昆山良品丝印器材有限公司 | Processing technology of silk screen printing plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4573406A (en) * | 1983-10-06 | 1986-03-04 | International Standard Electric Corporation | Screen printing device |
| CN101318401A (en) * | 2007-06-08 | 2008-12-10 | 富葵精密组件(深圳)有限公司 | Screen printing plate and manufacturing method thereof |
| CN103171262A (en) * | 2011-12-23 | 2013-06-26 | 昆山允升吉光电科技有限公司 | Solar energy battery electrode printing screen plate |
| CN203236823U (en) * | 2013-04-24 | 2013-10-16 | 昆山恒盛电子有限公司 | Cell screen |
| CN108601232A (en) * | 2018-05-02 | 2018-09-28 | 深圳光韵达激光应用技术有限公司 | A kind of laser ablation PCB circuit board line pattern processing technology |
| CN110341295A (en) * | 2019-08-28 | 2019-10-18 | 江苏盛矽电子科技有限公司 | A kind of laser engraving formula manufacturing method of screen |
| CN110780543A (en) * | 2019-10-31 | 2020-02-11 | 昆山良品丝印器材有限公司 | Manufacturing process method of solar cell printing screen |
| CN111070855A (en) * | 2019-12-09 | 2020-04-28 | 浙江硕克科技有限公司 | Manufacturing process of metal film screen printing plate |
| CN111605291A (en) * | 2020-05-23 | 2020-09-01 | 无锡易杰印刷有限公司 | Laser plate making method and equipment |
-
2020
- 2020-09-10 CN CN202010944918.7A patent/CN111993758A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4573406A (en) * | 1983-10-06 | 1986-03-04 | International Standard Electric Corporation | Screen printing device |
| CN101318401A (en) * | 2007-06-08 | 2008-12-10 | 富葵精密组件(深圳)有限公司 | Screen printing plate and manufacturing method thereof |
| CN103171262A (en) * | 2011-12-23 | 2013-06-26 | 昆山允升吉光电科技有限公司 | Solar energy battery electrode printing screen plate |
| CN203236823U (en) * | 2013-04-24 | 2013-10-16 | 昆山恒盛电子有限公司 | Cell screen |
| CN108601232A (en) * | 2018-05-02 | 2018-09-28 | 深圳光韵达激光应用技术有限公司 | A kind of laser ablation PCB circuit board line pattern processing technology |
| CN110341295A (en) * | 2019-08-28 | 2019-10-18 | 江苏盛矽电子科技有限公司 | A kind of laser engraving formula manufacturing method of screen |
| CN110780543A (en) * | 2019-10-31 | 2020-02-11 | 昆山良品丝印器材有限公司 | Manufacturing process method of solar cell printing screen |
| CN111070855A (en) * | 2019-12-09 | 2020-04-28 | 浙江硕克科技有限公司 | Manufacturing process of metal film screen printing plate |
| CN111605291A (en) * | 2020-05-23 | 2020-09-01 | 无锡易杰印刷有限公司 | Laser plate making method and equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043798A (en) * | 2021-11-23 | 2022-02-15 | 昆山良品丝印器材有限公司 | Processing technology of silk screen printing plate |
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Application publication date: 20201127 |