CN112659771A - Screen printing method capable of reducing printing thickness of slurry - Google Patents
Screen printing method capable of reducing printing thickness of slurry Download PDFInfo
- Publication number
- CN112659771A CN112659771A CN202011616736.3A CN202011616736A CN112659771A CN 112659771 A CN112659771 A CN 112659771A CN 202011616736 A CN202011616736 A CN 202011616736A CN 112659771 A CN112659771 A CN 112659771A
- Authority
- CN
- China
- Prior art keywords
- printing
- paste
- scraper
- screen
- slurry
- Prior art date
- 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.)
- Pending
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 62
- 238000007639 printing Methods 0.000 title claims abstract description 53
- 238000007650 screen-printing Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 abstract 2
- 230000008021 deposition Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Abstract
The invention discloses a screen printing method capable of reducing the printing thickness of slurry, which takes the position of the beginning of the printing forward stroke of a scraper on a screen as a starting position and the position of the ending of the printing forward stroke of the scraper on the screen as a cutter retracting position. The invention can reduce the printing thickness of the sizing agent, further reduce the dosage of the sizing agent and realize the aim of thin printing.
Description
Technical Field
The invention relates to a screen printing method capable of reducing the printing thickness of slurry.
Background
The screen printing is a main process for preparing the cell in the photovoltaic industry, can print a metal electrode, collect and lead out current, and can also be used as a deposition mode to deposit doping slurry (boron slurry and phosphorus slurry) to manufacture PN junctions or high-low junctions. With the development and progress of the photovoltaic industry, cost control of manufacturers becomes more and more fine, and the more saving the slurry is hopefully, the better the slurry is used as a large consumable material of the photovoltaic industry.
The screen printing machine mainly comprises a printing head (comprising a scraper and an ink return knife), a printing table surface, a screen printing plate frame and the like. The screen printing plate is fixed on the screen printing plate frame, the scraper extrudes the screen printing plate to deform, the slurry on the screen printing plate is extruded to form a pattern, and the slurry pushed by the scraper is scraped back to the initial position by the ink returning knife, so that a printing process is completed.
When the doping type slurry is deposited in a screen printing mode, the thickness of the deposition slurry is far larger than the thickness of a doped glass layer formed by gas phase source diffusion, the thicker the deposition thickness is, the more insufficient the reaction with oxygen is, the poorer the doping effect is, the more difficult the later cleaning process is, and therefore, the thinner the printing slurry is, the better the printing slurry is.
The existing screen printing mode is pre-deposited, a scraper is used for printing, an ink returning knife is used for returning, and when the screen printing plate graph is fully paved with the slurry after returning, the slurry seeps downwards, and the lower the viscosity of the slurry is, the more serious the seeping downwards is. When the scraper prints for the next time again, the slurry in the mesh holes of the screen printing plate is extruded, and then the slurry fully spread on the screen printing plate is extruded, so that secondary printing is formed invisibly, and the printing is not facilitated to be thinner.
Disclosure of Invention
The invention aims to provide a screen printing method, which can reduce the printing thickness of slurry, further reduce the consumption of the slurry and realize the aim of thin printing.
In order to achieve the purpose, the technical scheme of the invention is to design a screen printing method capable of reducing the printing thickness of the slurry, wherein the position of the start of the forward stroke of the scraper on the screen is taken as a starting position, the position of the end of the forward stroke of the scraper on the screen is taken as a cutter retracting position, the slurry in the cutter retracting position is not pushed back to the starting position during screen printing, the scraper is enabled to stick the slurry on the cutter retracting position, the scraper stuck with the slurry is separated from the screen and returns to the starting position, the scraper brings the stuck slurry back to the starting position of the screen, and the scraper prints on the screen by the slurry with the blade.
Preferably, the slurry is boron slurry doped slurry or phosphorus slurry doped slurry.
Preferably, the viscosity of the slurry is 500-500000 mpa.s.
Preferably, the viscosity of the slurry is 1000-300000 mpa.s.
Preferably, a preparation step is performed before printing, the preparation step including:
A1) installing and fixing a screen printing plate;
A2) mounting a scraper;
A3) aligning the screen printing plate, adjusting parameters and preparing.
Preferably, the printing action in the printing process comprises the following steps:
B1) pressing down the scraper to the start position of the screen;
B2) the scraper extrudes the slurry to advance until the scraper reaches a cutter receiving position, and the printing forward stroke is completed;
B3) retracting the scraper, wherein the scraper is adhered with the slurry and separated from the screen;
B4) the scraper returns to the starting position with the adhered slurry;
B5) repeat B1) to B4).
The invention has the advantages and beneficial effects that: a screen printing method is provided, which can reduce the printing thickness of the slurry, further reduce the consumption of the slurry and realize the aim of thin printing.
The slurry is characterized in that the slurry is mixed with boron slurry, phosphorus slurry and the like or has fluidity and viscosity, has the physical characteristics of better fluidity and viscosity, and can be attached to a scraper; according to the characteristics of fluidity and viscosity of the doped slurry, the printing mode without using the ink return blade is selected, and the next printing is carried out by using the part of the slurry adhered to the scraping strip by using the viscosity of the slurry.
The ink returning knife is omitted during printing, and after the ink is printed by using the scraper, the paste stuck on the scraper is returned to the initial position again for next printing; because the ink returning process is not adopted, the paste cannot be spread on the printing pattern before the next printing, and the penetration of the paste to the printing meshes is effectively avoided, so that the use amount of the paste is reduced, and the printing thickness is reduced.
The invention also has the following characteristics:
the method is simple, easy to realize and can be used for a long time;
the ink return knife is omitted, the printing head is controlled by only one scraper motor or cylinder, the ink return knife motor or cylinder is not needed, the equipment investment cost is reduced, and the equipment maintenance risk is reduced.
The printed slurry is thin and uniform, and consumables such as slurry are saved.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the invention is as follows:
a screen printing method capable of reducing paste printing thickness is characterized in that the position of the beginning of the printing forward stroke of a scraper on a screen printing plate is taken as a starting position, the position of the ending of the printing forward stroke of the scraper on the screen printing plate is taken as a cutter retracting position, paste is not pushed back to the starting position when screen printing is carried out, the scraper is enabled to stick paste on the cutter retracting position, the scraper sticking with the paste is separated from the screen printing plate and returns to the starting position, the scraper returns the pasted paste to the starting position of the screen printing plate, and the scraper prints on the screen printing plate by the paste with the paste being returned.
Specifically, the slurry may be a boron slurry doping slurry or a phosphorus slurry doping slurry.
Specifically, the viscosity of the slurry is 500-500000 mpa.s; preferably, the viscosity of the slurry is 1000-300000 mpa.s.
Specifically, a preparation step is performed before printing, and the preparation step comprises:
A1) installing and fixing a screen printing plate;
A2) mounting a scraper;
A3) aligning the screen printing plate, adjusting parameters and preparing.
Specifically, the printing action in the printing process comprises the following steps:
B1) pressing down the scraper to the start position of the screen;
B2) the scraper extrudes the slurry to advance until the scraper reaches a cutter receiving position, and the printing forward stroke is completed;
B3) retracting the scraper, wherein the scraper is adhered with the slurry and separated from the screen;
B4) the scraper returns to the starting position with the adhered slurry;
B5) repeat B1) to B4).
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The screen printing method capable of reducing the printing thickness of the paste is characterized in that the position of the start of the printing forward stroke of the scraper on the screen is taken as a starting position, the position of the end of the printing forward stroke of the scraper on the screen is taken as a cutter retracting position, the paste at the cutter retracting position is not pushed back to the starting position during screen printing, the scraper is enabled to stick the paste on the cutter retracting position, the scraper stuck with the paste is separated from the screen and returns to the starting position, the scraper returns the stuck paste to the starting position of the screen, and the scraper prints on the screen by the paste with the paste being returned.
2. The screen printing method capable of reducing the printing thickness of the paste according to claim 1, wherein the paste is a boron paste doping paste or a phosphorus paste doping paste.
3. The screen printing method capable of reducing the printing thickness of the paste, according to claim 1, is characterized in that the viscosity of the paste is 500-500000 mpa.s.
4. The screen printing method capable of reducing the printing thickness of the paste according to claim 1, wherein the viscosity of the paste is 1000-300000 mpa.s.
5. A screen printing method capable of reducing the thickness of paste printing according to claim 1, wherein a preparation step is performed before printing, the preparation step comprising:
A1) installing and fixing a screen printing plate;
A2) mounting a scraper;
A3) aligning the screen printing plate, adjusting parameters and preparing.
6. The screen printing method capable of reducing the printing thickness of the paste according to claim 1, wherein the printing action in the printing process comprises the following steps:
B1) pressing down the scraper to the start position of the screen;
B2) the scraper extrudes the slurry to advance until the scraper reaches a cutter receiving position, and the printing forward stroke is completed;
B3) retracting the scraper, wherein the scraper is adhered with the slurry and separated from the screen;
B4) the scraper returns to the starting position with the adhered slurry;
B5) repeat B1) to B4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011616736.3A CN112659771A (en) | 2020-12-31 | 2020-12-31 | Screen printing method capable of reducing printing thickness of slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011616736.3A CN112659771A (en) | 2020-12-31 | 2020-12-31 | Screen printing method capable of reducing printing thickness of slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112659771A true CN112659771A (en) | 2021-04-16 |
Family
ID=75411440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011616736.3A Pending CN112659771A (en) | 2020-12-31 | 2020-12-31 | Screen printing method capable of reducing printing thickness of slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112659771A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853928A (en) * | 2005-04-28 | 2006-11-01 | 南株式会社 | Screen printer |
| CN101462423A (en) * | 2007-12-18 | 2009-06-24 | 上海晨兴电子科技有限公司 | Method for manufacturing touch screen |
| CN102051828A (en) * | 2009-10-30 | 2011-05-11 | 上海奇正印花机械有限公司 | Textile printing and dyeing method |
| CN102371751A (en) * | 2010-08-20 | 2012-03-14 | 富葵精密组件(深圳)有限公司 | Screen printing machine |
| TW201321196A (en) * | 2011-11-18 | 2013-06-01 | Motech Ind Inc | Squeegee and screen printing method using the same |
| CN103481642A (en) * | 2013-10-14 | 2014-01-01 | 湖南省新化县鑫星电子陶瓷有限责任公司 | Precise automatic press for electronic ceramics |
| CN206264568U (en) * | 2016-12-21 | 2017-06-20 | 四川英发太阳能科技有限公司 | A kind of solar battery sheet silk-screen printing processing unit (plant) |
| CN107053826A (en) * | 2017-04-12 | 2017-08-18 | 东莞市汇研机械有限公司 | A kind of coiled strip flat-bed screen printing process and coiled strip flat-bed screen printing machine |
| CN209718887U (en) * | 2019-01-24 | 2019-12-03 | 郑州雅当科技有限公司 | A kind of adjustable screen printing apparatus in position |
| CN210011457U (en) * | 2019-04-04 | 2020-02-04 | 东莞荣龙精密机械有限公司 | Printing mechanism of silk screen printing machine |
-
2020
- 2020-12-31 CN CN202011616736.3A patent/CN112659771A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853928A (en) * | 2005-04-28 | 2006-11-01 | 南株式会社 | Screen printer |
| CN101462423A (en) * | 2007-12-18 | 2009-06-24 | 上海晨兴电子科技有限公司 | Method for manufacturing touch screen |
| CN102051828A (en) * | 2009-10-30 | 2011-05-11 | 上海奇正印花机械有限公司 | Textile printing and dyeing method |
| CN102371751A (en) * | 2010-08-20 | 2012-03-14 | 富葵精密组件(深圳)有限公司 | Screen printing machine |
| TW201321196A (en) * | 2011-11-18 | 2013-06-01 | Motech Ind Inc | Squeegee and screen printing method using the same |
| CN103481642A (en) * | 2013-10-14 | 2014-01-01 | 湖南省新化县鑫星电子陶瓷有限责任公司 | Precise automatic press for electronic ceramics |
| CN206264568U (en) * | 2016-12-21 | 2017-06-20 | 四川英发太阳能科技有限公司 | A kind of solar battery sheet silk-screen printing processing unit (plant) |
| CN107053826A (en) * | 2017-04-12 | 2017-08-18 | 东莞市汇研机械有限公司 | A kind of coiled strip flat-bed screen printing process and coiled strip flat-bed screen printing machine |
| CN209718887U (en) * | 2019-01-24 | 2019-12-03 | 郑州雅当科技有限公司 | A kind of adjustable screen printing apparatus in position |
| CN210011457U (en) * | 2019-04-04 | 2020-02-04 | 东莞荣龙精密机械有限公司 | Printing mechanism of silk screen printing machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |