CN114714750A - Manufacturing method of screen printing plate for printing positive electrode of solar cell and screen printing plate - Google Patents
Manufacturing method of screen printing plate for printing positive electrode of solar cell and screen printing plate Download PDFInfo
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- CN114714750A CN114714750A CN202210290501.2A CN202210290501A CN114714750A CN 114714750 A CN114714750 A CN 114714750A CN 202210290501 A CN202210290501 A CN 202210290501A CN 114714750 A CN114714750 A CN 114714750A
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- 238000007639 printing Methods 0.000 title claims abstract description 99
- 238000007650 screen-printing Methods 0.000 title claims abstract description 73
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 106
- 239000000839 emulsion Substances 0.000 claims abstract description 55
- 238000003825 pressing Methods 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 229920000728 polyester Polymers 0.000 claims description 30
- 238000005520 cutting process Methods 0.000 claims description 7
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- 238000005299 abrasion Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
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- 230000003746 surface roughness Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 24
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- 238000002360 preparation method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
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- 238000009795 derivation Methods 0.000 description 2
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- 238000004806 packaging method and process Methods 0.000 description 2
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- 239000004831 Hot glue Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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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
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
- B41P2215/12—Screens
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The application discloses a manufacturing method of a screen printing plate for printing a positive electrode of a solar cell and the screen printing plate, wherein the manufacturing method comprises the steps of preparing a mesh framework layer, preparing a wear-resistant layer, arranging an emulsion, the mesh framework layer and the wear-resistant layer in a pressing space of a pressing device, the pressing device comprises a first rough layer, the first rough layer is used for enclosing at least part of the pressing space, and pressing the emulsion, the mesh framework layer and the wear-resistant layer which are arranged in the pressing space to form a screen printing plate blank, the screen printing plate blank comprises a first emulsion layer, a mesh framework layer, a second emulsion layer and the wear-resistant layer which are overlapped, a first surface of the first emulsion layer, which is back to the mesh framework layer, is formed by a plurality of bulges or depressions distributed in an array through the first rough layer, a slurry inlet is formed in the first surface of the screen printing plate blank, a positive electrode printing pattern is formed in a second surface of the wear-resistant layer, which is back to the mesh framework layer, and a slurry channel communicated with the positive electrode printing pattern and the slurry inlet is formed in the screen blank so that the screen blank forms a screen.
Description
Technical Field
The application belongs to the technical field of manufacturing of solar cells, and particularly relates to a manufacturing method of a screen printing plate for printing a positive electrode of a solar cell and the screen printing plate.
Background
The screen printing plate is an important tool for printing the positive electrode of the solar cell, slurry is poured on the screen printing plate, the scraper drives the slurry to move on the screen printing plate, the slurry is extruded onto the solar cell through meshes on the screen printing plate, and corresponding patterns are formed on the solar cell so as to form the positive electrode of the solar cell.
In the related art, the surface of the screen printing plate is smooth, so that a scraper plate may slip, the thickness of a grid line of a positive electrode of a printed solar cell is uneven, resistance of slurry on the smooth screen printing plate during high-speed printing is small, and a part of the slurry which is extruded onto the solar cell through a mesh hole may not be successfully extruded, so that the problems of thick grids, uneven thickness of the grid line, broken grids, virtual printing and the like of the positive electrode of the printed solar cell occur, and the printing quality of the solar cell is affected.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method for manufacturing a screen printing plate for printing a positive electrode of a solar cell and the screen printing plate, which can solve the problem in the related art that the printing quality of the screen printing plate is poor due to the smooth surface of the screen printing plate for printing the positive electrode of the solar cell.
In order to solve the technical problem, the present application is implemented as follows:
the embodiment of the application provides a method for manufacturing a screen printing plate for printing a positive electrode of a solar cell, which comprises the following steps:
preparing a reticular framework layer;
preparing a wear-resistant layer;
placing an emulsion, the reticular skeleton layer and the wear-resistant layer in a pressing space of a pressing appliance, wherein the pressing appliance comprises a first rough layer which is used for enclosing at least part of the pressing space;
carrying out pressing operation on the emulsion, the reticular framework layer and the wear-resistant layer which are arranged in the pressing space to form a screen blank, wherein the screen blank comprises a first emulsion layer, the reticular framework layer, a second emulsion layer and the wear-resistant layer which are overlapped, and a first surface of the first emulsion layer, which faces away from the reticular framework layer, is formed by a first rough layer into a plurality of protrusions or recesses distributed in an array manner;
and arranging a slurry inlet on the first surface of the screen blank, arranging an inwards concave positive electrode printing pattern on the second surface of the wear-resistant layer, which faces away from the reticular framework layer, and arranging a slurry channel which is communicated with the positive electrode printing pattern and the slurry inlet in the screen blank so that the screen blank forms a screen.
The embodiment of the application also provides a screen printing plate for printing a positive electrode of a solar cell, which comprises a first emulsion layer, a reticular framework layer, a second emulsion layer and an abrasion-resistant layer, wherein:
the first emulsion layer, the reticular skeleton layer, the second emulsion layer and the wear-resistant layer are sequentially overlapped and fixedly connected, and a plurality of protrusions or depressions distributed in an array are arranged on the first surface of the first emulsion layer, which faces away from the reticular skeleton layer;
the second surface of the wear-resistant layer, which faces away from the reticular framework layer, is provided with a sunken positive electrode printing pattern, the first surface is provided with a slurry inlet, and a slurry channel for communicating the slurry inlet with the positive electrode printing pattern is arranged in the screen printing plate.
In the embodiment of the application, the first surface of the screen printing plate is a rough surface with protrusions or depressions distributed in an array, when the scraper drives the slurry to move on the screen printing plate at a high speed in the process of printing the positive electrode of the solar cell, the protrusions or depressions on the first surface have a resistance effect on the slurry, so that the slurry rolls on the first surface, and further the slurry can be more smoothly extruded to the slurry inlet of the screen printing plate, and falls onto the solar cell through the slurry channel and the positive electrode printing pattern on the second surface of the screen printing plate, thereby avoiding the problem of false printing caused by that part of the slurry is rapidly taken away by the scraper due to the smoothness of the screen printing plate, cannot be successfully extruded into the slurry inlet, cannot fall onto the solar cell through the screen printing plate, and also avoiding the problem of knife jumping during printing due to the slippage of the scraper, and the like, and further avoiding the problem of thick grid, depression, and the like of the positive electrode of the printed solar cell, Uneven thickness of grid lines, broken grids, virtual printing and the like, and finally the printability of the screen printing plate is improved. Therefore, the method and the device can solve the problem that in the related art, the printing quality of the screen printing plate is poor due to the fact that the surface of the screen printing plate for printing the positive electrode of the solar cell is smooth.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a screen printing plate for printing a positive electrode of a solar cell according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a process for making a mesh skeleton layer as disclosed in an embodiment of the present application;
fig. 3 is a flowchart of finished product inspection and packaging for a screen printing plate disclosed in the embodiment of the present application;
fig. 4 is a schematic structural diagram of a pressing tool, a mesh-shaped framework layer, and a wear-resistant layer when a screen blank is formed by pressing according to the embodiment of the present application.
Description of reference numerals:
100-mesh framework layer,
200-wear-resistant layer,
310-first laminate, 320-second laminate, 330-first rough layer, 340-second rough layer.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
As shown in fig. 1 to 4, the present application discloses a method for manufacturing a screen printing plate for printing a positive electrode of a solar cell, the manufacturing method includes the following steps:
s101, preparing a reticular skeleton layer 100.
The mesh-like skeleton layer 100 plays a role of supporting the skeleton in the screen.
S102, preparing the wear-resistant layer 200.
The material of the wear-resistant layer 200 is various, for example, the wear-resistant layer 200 may be a PI (Polyimide) film, and of course, the wear-resistant layer 200 may also be a film structure made of other polymer materials. The wear-resistant layer 200 can enhance the wear resistance of the screen printing plate, reduce the wear of foreign matters in the slurry to the screen printing plate in the printing process and prolong the service life of the screen printing plate.
It should be noted that, the present application does not limit the order of preparing the mesh-shaped skeleton layer 100 and the wear-resistant layer 200, that is, S101 may be performed before S102, S102 may be performed before S101, and of course, S101 and S102 may be performed simultaneously.
S103, the emulsion, the reticular framework layer 100 and the wear-resistant layer 200 are placed in the pressing space of the pressing appliance, the pressing appliance comprises a first rough layer 330, and the first rough layer 330 is used for enclosing at least part of the pressing space.
In a subsequent lamination process, the first rough layer 330 may face a surface of the mesh-shaped skeleton layer 100 facing away from the wear-resistant layer 200, the emulsion may be an emulsion, and the emulsion may be interposed between the mesh-shaped skeleton layer 100 and the wear-resistant layer 200 before lamination.
Alternatively, the pressing tool may further include a first pressing plate 310 and a second pressing plate 320, and the first rough layer 330 may be fixed to a surface of the first pressing plate 310 facing the second pressing plate 320. In this application, the pressfitting technology can be high temperature pressfitting, and consequently, high temperature resistant pressfitting board can be chooseed for use to first pressfitting board 310 and second pressfitting board 320, and high temperature resistant teflon (polytetrafluoroethylene) cloth can be chooseed for use to first coarse layer 330, and of course, first coarse layer 330 also can choose for use other kinds, surperficial coarse cloth, and this application does not do the restriction to the concrete material and the kind of first coarse layer 330.
And S104, carrying out pressing operation on the emulsion, the reticular framework layer 100 and the wear-resistant layer 200 which are arranged in the pressing space to form the screen blank.
The screen blank comprises a first emulsion layer, a reticular framework layer 100, a second emulsion layer and a wear-resistant layer 200 which are sequentially stacked, wherein a first surface of the first emulsion layer, which faces away from the reticular framework layer 100, is provided with a plurality of protrusions or depressions distributed in an array manner by a first rough layer 330.
When the emulsion, the reticular skeleton layer 100 and the wear-resistant layer 200 are placed in the pressing space of the pressing appliance, the emulsion is placed between the reticular skeleton layer 100 and the wear-resistant layer 200, part of the emulsion is extruded and coats the opposite surfaces of the reticular skeleton layer 100 and the wear-resistant layer 200 in the pressing process, and a second emulsion layer is formed between the reticular skeleton layer 100 and the wear-resistant layer 200 after the emulsion is dried. The mesh-shaped skeleton layer 100 has a plurality of meshes, a part of the emulsion overflows onto the surface of the mesh-shaped skeleton layer 100, which faces away from the wear-resistant layer 200, during the pressing process, the first emulsion layer is formed on the surface of the mesh-shaped skeleton layer 100, which faces away from the wear-resistant layer 200, after the emulsion is dried, and the first rough layer 330 faces the surface of the mesh-shaped skeleton layer 100, which faces away from the wear-resistant layer 200, so that the emulsion on the surface of the mesh-shaped skeleton layer 100, which faces away from the wear-resistant layer 200, adapts to and conforms to the shape of the first rough layer 330, so that a plurality of protrusions or depressions distributed in an array are formed on the first surface of the dried first emulsion layer, which faces away from the mesh-shaped skeleton layer 100, and the first surface of the screen plate is a rough surface.
Specifically, the roughness of the first surface may be 12 to 16 μm.
And S105, forming a slurry inlet on the first surface of the screen blank, forming an inwards concave positive electrode printing pattern on the second surface, which is opposite to the reticular framework layer 100, of the wear-resistant layer 200, and forming a slurry channel for communicating the positive electrode printing pattern with the slurry inlet in the screen blank, so that the screen blank forms the screen.
Alternatively, the positive electrode printing pattern may penetrate the wear-resistant layer 200.
Optionally, a projection of the slurry inlet in a direction perpendicular to the screen, a projection of the slurry channel in a direction perpendicular to the screen, and a projection of the positive electrode printing pattern in a direction perpendicular to the screen may be overlapped, that is, a shape of the slurry inlet is the same as the positive electrode printing pattern, a shape of the slurry channel is also the same as the positive electrode printing pattern, and the slurry inlet, the slurry channel, the positive electrode printing pattern, and the slurry channel, the positive electrode printing pattern, the slurry channel, and the positive electrode printing pattern are oppositely disposed in the direction perpendicular to the screen. In this case, the slurry can flow out through the screen more smoothly.
The paste for printing the positive electrode of the solar cell may be a silver paste. In the process of printing the positive electrode of the solar cell, the screen printing plate can be placed right above the solar cell, the slurry is poured onto the first surface of the screen printing plate, the scraper drives the slurry to move on the first surface of the screen printing plate, the slurry sequentially passes through the slurry inlet, the slurry channel and the positive electrode printing pattern under the extrusion of the scraper and then falls onto the solar cell below the screen printing plate, the slurry falling onto the solar cell is consistent with the shape of the slurry outlet due to the positive electrode printing pattern forming the slurry outlet of the screen printing plate, namely, the slurry falling onto the solar cell is in the shape of the positive electrode printing pattern, and the printing of the positive electrode of the solar cell is completed.
In the embodiment of the application, the first surface of the screen printing plate is a rough surface with protrusions or depressions distributed in an array, when the scraper drives the slurry to move on the screen printing plate at a high speed in the process of printing the positive electrode of the solar cell, the protrusions or depressions on the first surface have a resistance effect on the slurry, so that the slurry rolls on the first surface, and further the slurry can be more smoothly extruded to the slurry inlet of the screen printing plate, and falls onto the solar cell through the slurry channel and the positive electrode printing pattern on the second surface of the screen printing plate, thereby avoiding the problem of false printing caused by that part of the slurry is rapidly taken away by the scraper due to the smoothness of the screen printing plate, cannot be successfully extruded into the slurry inlet, cannot fall onto the solar cell through the screen printing plate, and also avoiding the problem of knife jumping during printing due to the slippage of the scraper, and the like, and further avoiding the problem of thick grid, depression, and the like of the positive electrode of the printed solar cell, Uneven thickness of grid lines, broken grids, virtual printing and the like, and finally the printability of the screen printing plate is improved. Therefore, the method and the device can solve the problem that in the related art, the printing quality of the screen printing plate is poor due to the fact that the surface of the screen printing plate for printing the positive electrode of the solar cell is smooth.
In addition, among the prior art, because the half tone surface is more smooth, may lead to disconnected bars, in order to guarantee the integrality of the positive electrode of the solar cell who prints out, need repeated printing operation, repeated printing operation indicates the operation that repeated scraper blade drove thick liquids and remove on the half tone, the number of repetition is more, the mesh of half tone is more big that is stopped up, after the half tone blocks up, need clean the half tone, frequently clean the half tone, can influence the life of half tone, and the half tone surface of making through this application is comparatively crude, the printing performance is good, can obtain complete solar cell's positive electrode through the printing operation of less number of times, consequently, need not frequently clean the half tone, and then can prolong the life of half tone.
In the present application, the abrasion resistant layer 200 may be a PI film, which is relatively hard and may be crushed if directly contacting the PI film to the second laminate sheet 320. For this reason, the stitching instrument may further include a second rough layer 340, the second rough layer 340 may be a high temperature resistant teflon cloth, the second rough layer 340 may be fixed on a surface of the second stitching plate 320 facing the first stitching plate 310, when the stitching operation is performed, the second rough layer 340 may be disposed facing the wear-resistant layer 200, the teflon cloth is relatively soft, in the stitching process, the teflon cloth of the second rough layer 340 contacts the wear-resistant layer 200, which can play a role of buffering, and prevent the wear-resistant layer 200 from being damaged in the stitching process. The first rough layer 240 may also be teflon cloth.
The mesh-shaped framework layer 100 may be made of a steel wire mesh, but the steel wire mesh has a high cost, so that the screen printing plate has a high cost, and in order to reduce the cost of the screen printing plate, the step of preparing the mesh-shaped framework layer 100 may include the following steps:
s201, cutting according to a first preset size to obtain a steel wire mesh.
S202, cutting according to a second preset size to obtain a polyester net, wherein the first preset size is smaller than the second preset size.
To obtain more standardized wire mesh and polyester mesh sizes, the wire mesh and polyester mesh sizes may be calculated using a computer (computer) with calculation and programming functions before cutting the wire mesh and polyester mesh to make the cut sizes more standardized. The application does not limit the sequence of S201 and S202.
S203, carrying out net stretching operation on the polyester net through a net stretching machine.
In order to ensure that the polyester net can reach the tension required by the screen printing plate, the net tensioning time can be 72 hours, and of course, the specific net tensioning time can be adjusted according to the requirements, and the net tensioning time is not limited in the application.
And S204, overlapping the steel wire mesh on the polyester mesh.
The steel mesh may be placed in the middle of the polyester mesh.
S205, adhering the steel wire mesh to the middle of the polyester mesh in a mode of edge adhesion. Specifically, an adhesive is coated on the edge of the steel wire mesh, so that the edge of the steel wire mesh is bonded and fixed with the polyester mesh. The adhesive may be a hot melt adhesive.
S206, cutting off the area, opposite to the non-sticking area of the steel wire mesh, of the polyester mesh, wherein the edge sticking area of the steel wire mesh surrounds the non-sticking area.
Therefore, the polyester net has tension, and the polyester net plays a role in pulling the steel wire mesh positioned in the middle, so that the steel wire mesh has tension, and the screen printing plate has tension.
In the mesh-shaped skeleton layer 100 manufactured by the method, the steel wire mesh and the polyester mesh are not strictly positioned on the same plane, so that in order to avoid the adverse effect on printing caused by the connecting position of the steel wire mesh and the polyester mesh, the size of the steel wire mesh is larger than that of the solar cell, and the solar cell can be positioned right below the steel wire mesh in the printing process. Meanwhile, the slurry inlet, the slurry channel and the positive electrode printing pattern are all arranged on the screen printing plate part corresponding to the steel wire mesh.
In this case, compared with the case that the mesh-shaped framework layer 100 is completely made of the steel wire mesh, the mesh-shaped framework layer 100 is made of the steel wire mesh and the polyester mesh, so that the cost of the screen printing plate can be reduced.
During storage of the wire mesh, the wire mesh may have lipid materials in order to protect the wire mesh, and the lipid materials on the wire mesh may react with the slurry and may affect the printing quality.
In order to solve the above problems, the preparation of the mesh-shaped skeleton layer 100 further includes a degreasing step of wiping the steel wire mesh with an agent to remove lipids on the steel wire mesh. The use of the medicament to wipe the steel wire mesh can be operated after the preparation of the mesh-shaped skeleton layer 100, and the mesh-shaped skeleton layer 100 can be wholly placed in the medicament pool to be wiped, so that not only can the lipids on the steel wire mesh be removed, but also the polyester mesh can be cleaned.
In the process of forming the slurry inlet on the first surface of the screen blank, forming the recessed positive electrode printing pattern on the second surface of the wear-resistant layer 200 facing away from the mesh-shaped framework layer 100, and forming the slurry channel communicating the positive electrode printing pattern with the slurry inlet inside the screen blank, residues may remain in the slurry inlet, the positive electrode printing pattern and the slurry channel, which may adversely affect the printing of the positive electrode.
In order to avoid the above problems, the manufacturing method may further include a washing step of washing the residue in the slurry inlet, the positive electrode print pattern, and the slurry channel. So as to avoid the adverse effect of the residues on the printing of the positive electrode of the solar cell and ensure the printing performance of the screen printing plate. The step is carried out after a slurry inlet is arranged on the first surface of the screen blank, an inward concave positive electrode printing pattern is arranged on the second surface of the wear-resistant layer 200, which is opposite to the reticular framework layer 100, and a slurry channel communicated with the positive electrode printing pattern and the slurry inlet is arranged in the screen blank.
The method for forming the concave positive electrode printing pattern on the second surface of the wear-resistant layer 200, which faces away from the mesh-shaped skeleton layer 100, may include the following steps:
first, a film sheet is prepared according to a preset shape of a positive electrode printing pattern. The positive electrode print pattern can be drawn by CAD. The shape of the positive electrode printed pattern may be two waves, and of course, the shape of the positive electrode printed pattern may be adjusted according to specific requirements, which is not limited in the present application.
Then, the film is placed on the second surface, and positive electrode printing patterns are formed on the second surface in a laser mode according to the film. In this process, the positive electrode printing pattern may penetrate the wear-resistant layer 200. The step of forming the positive electrode printing pattern on the second surface by laser according to the film sheet can be performed after the screen blank is formed.
In general, the positive electrode printing pattern includes a main grid pattern and a sub-grid pattern, the mesh-shaped framework layer 100 has mesh lines, and along a direction perpendicular to a plane of the screen, a projection of the mesh lines of the mesh-shaped framework layer 100 at least partially overlaps a projection of the sub-grid pattern, but does not overlap the main grid pattern, that is, a part of the mesh lines of the mesh-shaped framework layer 100 blocks a part of the sub-grid pattern, and does not block the main grid pattern.
In the process of forming the slurry channel on the screen, part of the mesh lines of the mesh-shaped framework layer 100 needs to be broken, and since the wear-resistant layer 200 is connected to the mesh-shaped framework layer 100, in the present application, the wear-resistant layer 200 is a PI film, and the PI film has a certain wrapping effect on the mesh-shaped framework layer 100, if part of the mesh lines of the mesh-shaped framework layer 100 are broken after the screen blank is formed by pressing, the tension of the mesh-shaped framework layer 100 is released unevenly, and the mesh-shaped framework layer 100 may break or explode.
In order to solve the above problems, in the preparation of the mesh-shaped skeleton layer 100 and the insertion of the emulsion into the pressing space of the pressing tool, the mesh-shaped skeleton layer 100 and the wear-resistant layer 200, the preparation method may further include forming an avoiding hole corresponding to the sub-grid pattern on the mesh-shaped skeleton layer 100, that is, punching a hole corresponding to the sub-grid pattern on the mesh-shaped skeleton layer 100, and breaking the mesh line of the mesh-shaped skeleton layer 100 corresponding to the sub-grid pattern. In this case, the problem that the mesh line of the mesh-shaped framework layer 100 is broken in the later stage of forming the slurry channel, so that the mesh line of the mesh-shaped framework layer 100 is broken, and the plate is exploded in the mesh-shaped framework layer 100 can be avoided. Of course, in the above-mentioned scheme, the mesh-shaped framework layer 100 includes a polyester mesh and a steel wire mesh, and the slurry channel is formed on the steel wire mesh, so that the avoidance holes corresponding to the sub-grid patterns can be formed on the direct steel wire mesh.
In order to ensure the accuracy of the avoiding holes on the mesh-shaped skeleton layer 100, before the avoiding holes are formed, the sub-grid pattern may be scanned into a memory, for example, a computer, and the mesh-shaped skeleton layer 100 is punched according to the sub-grid pattern in the memory, so as to form the avoiding holes on the mesh-shaped skeleton layer 100, which correspond to the sub-grid pattern accurately.
In order to avoid that the mesh-shaped framework layer 100 has cracks after the mesh-shaped framework layer 100 is perforated or that part of the avoidance holes of the mesh-shaped framework layer 100 are not successfully punched, the mesh-shaped framework layer 100 can be detected before the emulsion, the mesh-shaped framework layer 100 and the wear-resistant layer 200 are placed in the pressing space of the pressing tool after the mesh-shaped framework layer 100 is perforated, and whether the mesh-shaped framework layer 100 has cracks, whether the mesh-shaped framework layer 100 is flat and whether the sub-grid pattern of the steel wire mesh is complete are detected.
In a further technical scheme, the manufacturing method further comprises the steps of forming a slurry inlet on the first surface of the screen blank, and forming a slurry channel communicated with the positive electrode printing pattern and the slurry inlet in the screen blank. Specifically, a slurry inlet can be formed in the first emulsion layer in a laser mode, the emulsion solidified in the avoiding holes can be removed in the laser mode, partial meshes of the reticular skeleton layer 100 can be opened, and the slurry channel comprises partial meshes and avoiding holes. In this step, a slurry inlet and a slurry channel may be formed on the screen at the same time by laser on the first surface of the screen according to the positive electrode printing pattern.
In the scheme, the positive electrode printing pattern is arranged on the second surface of the film sheet in a laser mode, the positive electrode printing pattern can be formed after the screen blank is formed in a pressing mode, and when the positive electrode printing pattern is arranged on the second surface in the laser mode, the laser penetrates through the whole screen, so that a slurry inlet is formed on the first surface of the screen while the positive electrode printing pattern is formed on the second surface, a slurry channel is formed inside the screen, the shape of the slurry inlet is the same as that of the positive electrode printing pattern, the shape of the slurry channel is also the same as that of the positive electrode printing pattern, when the laser is vertical to the screen, the projection of the slurry inlet in the direction vertical to the screen, the projection of the slurry channel in the direction vertical to the screen and the projection of the positive electrode printing pattern in the direction vertical to the screen coincide, the slurry can pass through the screen plate more smoothly and flow out of the screen plate.
In a further technical scheme, the preparation method can further comprise the following steps:
step 301: and (4) detecting the finished product of the screen printing plate, detecting the positive electrode printing pattern on the screen printing plate by using instruments such as a microscope and the like, and detecting whether the positive electrode printing pattern is complete or not. Of course, other apparatuses may be used to detect the screen, and the application does not limit the specific detecting apparatus. The step is carried out after a slurry inlet, a slurry channel and a positive electrode printing pattern are arranged on the screen, namely after the screen blank is formed into the screen.
Step 302, after the finished product detection is completed, a silver adhesive tape can be attached to the portion of the screen plate outside the slurry inlet on the first surface and the positive electrode printing pattern on the second surface to protect the screen plate, and meanwhile, the silver adhesive tape is prevented from damaging the slurry inlet and the positive electrode printing pattern.
And 303, packaging the screen printing plate finished product.
The application discloses a screen printing plate for printing a positive electrode of a solar cell, which can be manufactured by the manufacturing method, and the screen printing plate comprises a first emulsion layer, a reticular framework layer 100, a second emulsion layer and an abrasion-resistant layer 200.
The first emulsion layer, the reticular skeleton layer 100, the second emulsion layer and the wear-resistant layer 200 are sequentially overlapped and fixedly connected, and a plurality of protrusions or depressions distributed in an array are arranged on the first surface of the first emulsion layer, which faces away from the reticular skeleton layer 100. The second surface of the wear-resistant layer 200, which faces away from the mesh-shaped framework layer 100, is provided with a concave positive electrode printing pattern, the first surface is provided with a slurry inlet, and a slurry channel for communicating the slurry inlet with the positive electrode printing pattern is arranged in the screen printing plate. The derivation process of the beneficial effect of the screen printing plate is substantially similar to the derivation process of the beneficial effect brought by the screen printing plate manufactured by the manufacturing method, and therefore, the description is omitted.
Further, the mesh-shaped framework layer 100 may include a steel wire mesh and a polyester mesh, an opening may be formed in the middle of the polyester mesh, the steel wire mesh may be opposite to the opening, the edge of the steel wire mesh surrounds the opening, and the edge of the steel wire mesh is fixedly connected to the polyester mesh. The slurry inlet, the slurry channel and the positive electrode printing pattern are all arranged on the screen printing plate part corresponding to the steel wire mesh. In this case, compared with the case that the mesh-shaped framework layer 100 is completely made of the steel wire mesh, the mesh-shaped framework layer 100 is made of the steel wire mesh and the polyester mesh, so that the cost of the screen printing plate can be reduced.
The first surface is provided with a plurality of protrusions or depressions distributed in an array, that is, the first surface is a rough surface, and optionally, the surface roughness of the first surface can be 12-16 μm.
Along the direction vertical to the screen printing plate, the projection of the slurry inlet is superposed with the positive electrode printing pattern, and the projection of the slurry channel is superposed with the positive electrode printing pattern. In this case, it is ensured that the slurry flows through the screen plate more smoothly and flows out of the screen plate.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A manufacturing method of a screen printing plate for printing a positive electrode of a solar cell is characterized by comprising the following steps:
preparing a mesh-like skeleton layer (100);
preparing a wear resistant layer (200);
placing an emulsion, the reticular skeleton layer (100) and the wear-resistant layer (200) in a pressing space of a pressing appliance, wherein the pressing appliance comprises a first rough layer (330), and the first rough layer (330) is used for enclosing at least part of the pressing space;
pressing the emulsion, the mesh-shaped framework layer (100) and the wear-resistant layer (200) which are arranged in the pressing space to form a screen blank, wherein the screen blank comprises a first emulsion layer, the mesh-shaped framework layer (100), a second emulsion layer and the wear-resistant layer (200) which are stacked, and a first surface of the first emulsion layer, which faces away from the mesh-shaped framework layer (100), is provided with a plurality of protrusions or recesses distributed in an array by the first rough layer (330);
and arranging a slurry inlet on the first surface of the screen blank, arranging an inwards concave positive electrode printing pattern on the second surface of the wear-resistant layer (200) opposite to the reticular framework layer (100), and arranging a slurry channel for communicating the positive electrode printing pattern with the slurry inlet in the screen blank so that the screen blank forms a screen.
2. The method of making according to claim 1, wherein said preparing a reticulated framework layer (100) comprises:
cutting according to a first preset size to obtain a steel wire mesh;
cutting according to a second preset size to obtain a polyester net, wherein the first preset size is smaller than the second preset size;
carrying out net stretching operation on the polyester net through a net stretching machine;
superposing the steel wire mesh on the polyester mesh;
sticking the steel wire mesh to the middle of the polyester mesh in a mode of edge sticking;
and cutting off the area, opposite to the non-sticking area of the steel wire mesh, of the polyester mesh, wherein the edge sticking area of the steel wire mesh surrounds the non-sticking area.
3. The method of making as claimed in claim 2, wherein said preparing a mesh skeleton layer (100) further comprises:
and wiping the steel wire mesh by using a medicament to remove lipid on the steel wire mesh.
4. The method of manufacturing of claim 1, further comprising:
rinsing debris within the slurry inlet, the positive electrode print pattern, and the slurry channel.
5. The manufacturing method according to claim 1, wherein the forming of the concave positive electrode printing pattern on the second surface of the wear-resistant layer (200) facing away from the mesh-shaped skeleton layer (100) comprises:
preparing a film sheet according to the preset shape of the positive electrode printing pattern;
and arranging the film sheet on the second surface, and forming the positive electrode printing pattern on the second surface in a laser mode according to the film sheet.
6. The method of manufacturing according to claim 1, wherein the positive electrode print pattern includes a main gate pattern and a sub-gate pattern;
the manufacturing method comprises the following steps of preparing the reticular skeleton layer (100), and placing an emulsion, the reticular skeleton layer (100) and the wear-resistant layer (200) in a pressing space of a pressing appliance, wherein the manufacturing method also comprises the following steps: forming avoidance holes corresponding to the auxiliary grid patterns on the reticular framework layer (100);
offer the thick liquid entry in the first surface of half tone blank, and offer the intercommunication positive electrode printed pattern and the thick liquid passageway of thick liquid entry in the inside of half tone blank, include:
and arranging the slurry inlet on the first emulsion layer in a laser mode, removing the solidified emulsion in the avoidance hole in the laser mode, and opening partial meshes of the reticular skeleton layer (100), wherein the slurry channel comprises the partial meshes and the avoidance hole.
7. A screen for printing a positive electrode of a solar cell, comprising a first emulsion layer, a mesh-like skeleton layer (100), a second emulsion layer and an abrasion resistant layer (200), wherein:
the first emulsion layer, the reticular framework layer (100), the second emulsion layer and the wear-resistant layer (200) are sequentially overlapped and fixedly connected, and a plurality of protrusions or depressions distributed in an array are arranged on the first surface, which is back to the reticular framework layer (100), of the first emulsion layer;
a second surface of the wear-resistant layer (200), which faces away from the reticular framework layer (100), is provided with a sunken positive electrode printing pattern, the first surface is provided with a slurry inlet, and a slurry channel for communicating the slurry inlet with the positive electrode printing pattern is arranged in the screen printing plate.
8. The screen according to claim 7, wherein the mesh-shaped framework layer (100) comprises a steel mesh and a polyester mesh, the polyester mesh is provided with an opening, at least part of the steel mesh is opposite to the opening, the edge of the steel mesh surrounds the opening, and the edge of the steel mesh is fixedly connected with the polyester mesh.
9. The screen of claim 7, wherein a projection of the slurry inlet coincides with the positive electrode print pattern and a projection of the slurry passage coincides with the positive electrode print pattern in a direction perpendicular to the screen.
10. The screen of claim 7, wherein the surface roughness of the first surface is 12-16 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210290501.2A CN114714750B (en) | 2022-03-23 | 2022-03-23 | Method for manufacturing screen printing plate for printing positive electrode of solar cell and screen printing plate |
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| CN202210290501.2A CN114714750B (en) | 2022-03-23 | 2022-03-23 | Method for manufacturing screen printing plate for printing positive electrode of solar cell and screen printing plate |
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| CN114714750A true CN114714750A (en) | 2022-07-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115856A (en) * | 2008-11-13 | 2010-05-27 | Panasonic Corp | Screen printing apparatus and plasma display panel |
| JP2016078393A (en) * | 2014-10-21 | 2016-05-16 | ミタニマイクロニクス株式会社 | Screen mask, and method for manufacturing screen mask |
| JP2017100367A (en) * | 2015-12-02 | 2017-06-08 | ミタニマイクロニクス九州株式会社 | Screen mask and method for producing screen mask |
| CN107443882A (en) * | 2016-06-01 | 2017-12-08 | 仓和股份有限公司 | Printing screen plate with protective layer and preparation method thereof |
| CN210911628U (en) * | 2019-08-30 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Solar cell printing screen |
| CN211730624U (en) * | 2019-12-16 | 2020-10-23 | 苏州阿特斯阳光电力科技有限公司 | Solar cell printing screen |
| CN112319023A (en) * | 2020-12-07 | 2021-02-05 | 江苏盛矽电子科技有限公司 | Double-sided structure printing screen |
-
2022
- 2022-03-23 CN CN202210290501.2A patent/CN114714750B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115856A (en) * | 2008-11-13 | 2010-05-27 | Panasonic Corp | Screen printing apparatus and plasma display panel |
| JP2016078393A (en) * | 2014-10-21 | 2016-05-16 | ミタニマイクロニクス株式会社 | Screen mask, and method for manufacturing screen mask |
| JP2017100367A (en) * | 2015-12-02 | 2017-06-08 | ミタニマイクロニクス九州株式会社 | Screen mask and method for producing screen mask |
| CN107443882A (en) * | 2016-06-01 | 2017-12-08 | 仓和股份有限公司 | Printing screen plate with protective layer and preparation method thereof |
| CN210911628U (en) * | 2019-08-30 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Solar cell printing screen |
| CN211730624U (en) * | 2019-12-16 | 2020-10-23 | 苏州阿特斯阳光电力科技有限公司 | Solar cell printing screen |
| CN112319023A (en) * | 2020-12-07 | 2021-02-05 | 江苏盛矽电子科技有限公司 | Double-sided structure printing screen |
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| CN114714750B (en) | 2024-03-26 |
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