CN210174381U - Multi-angle or zero-angle screen printing plate - Google Patents
Multi-angle or zero-angle screen printing plate Download PDFInfo
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- CN210174381U CN210174381U CN201920696458.3U CN201920696458U CN210174381U CN 210174381 U CN210174381 U CN 210174381U CN 201920696458 U CN201920696458 U CN 201920696458U CN 210174381 U CN210174381 U CN 210174381U
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Abstract
The utility model discloses a multi-angle or zero angle half tone, including screen frame, first silk screen, compound district, second silk screen, polymer rete and rete lines, first silk screen setting in the screen frame, compound district set up the intermediate position at first silk screen, second silk screen setting form compound greige in the compound district of first silk screen, polymer rete bond on compound greige, the polymer rete on be provided with the pattern district, the rete lines set up respectively in the pattern district. In this way, the utility model provides a multi-angle or zero angle half tone, polymer rete adhesive force is extremely strong, is difficult for droing, has improved the plate-making yield by a wide margin, and the rete is difficult for wearing and tearing broken hole when the half tone is used, and the printing life-span improves more than one time, and printing later stage printing lines can not widen yet, and the half tone lines of preparation are passed through the china ink nature better, can compress the restriction of high accuracy narrow linewidth by a wide margin, and print well, and the line type is good, has more obvious promotion to battery piece efficiency like this.
Description
Technical Field
The utility model relates to a solar wafer, high accuracy electronic components and parts etc. printing element's technical field especially relates to a multi-angle or zero angle half tone.
Background
With the increasing demand of energy, the problem of energy becomes a significant problem restricting the development of international socioeconomic, which prompts people to continuously explore new energy, wherein the research of solar energy occupies an important position. Solar cells have been rapidly developed in recent years as one of core technologies for solar research, and the improvement of conversion efficiency of solar cells is a main research object of current solar cells, and besides requirements of cell substrate material selection and optimization, cell manufacturing process improvement and the like, the conversion efficiency of solar cells can also be improved by adopting a proper high-precision high-stability printing method. The use of printing screens during the printing of solar cells has a great influence on the final printing quality.
The traditional manufacturing method of the composite screen printing plate for printing the solar cell slice generally comprises the steps of coating a layer of photosensitive emulsion on a stretched silk screen, uniformly adhering the dried emulsion on the silk screen, then utilizing the shading of a film pattern to expose on an exposure machine, solidifying the light leaking part of the pattern under the action of a photosensitizer, solidifying the shading part, washing the uncured emulsion during developing, and obtaining a required pattern on the screen printing plate surface, thereby completing the transfer of the pattern. The screen printing plate manufactured by the method has certain limitations: firstly, the resolution of the photosensitive emulsion is not well mastered under the action of light, the flatness of the line edge after exposure and development is not good, and the printing quality of the line is easily influenced during use; secondly, the adhesion between the emulsion and the steel wire gauze is poor, and the emulsion on the plate surface is easy to fall off after exposure and development, so that the plate-making yield is greatly influenced; thirdly, the emulsion has poor abrasive resistance, and the friction between the emulsion and a substrate during printing is easy to abrade and leak slurry, so that the printing quality of the surface is influenced and the service life is prolonged; fourth, the influence of the energy stability of the light on the lines during exposure is large, so that the thickness of the lines is easily uneven, the manufacturing yield is influenced during batch manufacturing, and the printing stability is influenced during use; and fifthly, due to the influence of the ink permeability of the emulsion, the printed lines cannot be reduced to a narrower range, and the requirement of high-precision fine line printing cannot be met. In recent years, further enhancement of solar cell efficiency by conventional processes has become increasingly difficult. The ultra-fine grid solar cell technology can reduce shading loss, further optimize the aspect ratio of the secondary grid line, and quickly realize efficiency improvement and cost reduction on the basis of the existing production equipment and process, thereby being widely concerned. With the continuous updating and upgrading of conductive paste and printing equipment, the metallization of the ultra-fine grid line solar cell is becoming possible gradually. However, as the openings of the secondary grid lines are reduced, due to the intrinsic defects of the traditional screen mesh screen (oblique crossing straining screen), the shading defect of the screen knots is more practical and obvious, the trend of printing the superfine grids and further narrowing the openings of the secondary grid lines is influenced, and the requirement of the photovoltaic industry on the screen mesh without the screen knots is stronger.
In combination with the above limitations, we are constantly searching for new processes for making screens for printing.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multi-angle or zero angle half tone, polymer rete adhesive force is extremely strong, be difficult for droing, the plate-making yield has been improved by a wide margin, the broken hole of the difficult wearing and tearing of rete when the half tone is used, the printing life improves more than one time, printing later stage printing lines can not be widened yet, there is obvious advantage to battery piece efficiency, the half tone lines of preparation are passed through the china ink nature better, consequently, the restriction of the narrow line width of high accuracy of compression by a wide margin, and print well, the line type is good, there is more obvious promotion to battery piece efficiency like this.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a multi-angle or zero angle half tone, includes screen frame, first silk screen, composite region, second silk screen, polymer rete and rete lines, first silk screen setting in the screen frame, composite region set up the intermediate position at first silk screen, second silk screen setting form composite gauze in the composite region of first silk screen, polymer rete bond on composite gauze, polymer rete on be provided with the pattern district, the rete lines set up respectively in the pattern district.
In a preferred embodiment of the present invention, the screen frame is made of aluminum or iron, and through holes are further disposed at four corners of the screen frame.
In a preferred embodiment of the present invention, the first screen is made of polyester material or stainless steel material with thick wire diameter and low mesh number.
In a preferred embodiment of the present invention, the second screen is made of stainless steel screen, stainless steel sheet, nickel electroforming screen or tungsten steel alloy screen.
In a preferred embodiment of the present invention, the lines of the film layer are hollow structures.
In a preferred embodiment of the present invention, the polymer film layer is bonded to the composite gauze by polymer adhesive glue, wherein the polymer adhesive glue is thermosetting glue and comprises EVA, PE, pu and epoxy resin.
In a preferred embodiment of the present invention, the polymer film layer includes a PET film and a polymer composite material coated on the PET film, wherein the polymer composite material includes polyimide, polyurethane, polyetheretherketone, polyester and a dry film.
In a preferred embodiment of the present invention, the second screen has a structure of a screen with warp threads and weft threads woven vertically, and the number of the mesh is the same.
In a preferred embodiment of the present invention, the second silk screen has a structure of a gauze woven by warps and wefts vertically, the number of the thick and thin meshes is not the same, the steel wire mesh is woven by mixing, the warp direction is a silk screen with the number of 290 and 500 meshes and the diameter of 10-20 um; the weft direction adopts a screen with 380-600 meshes and 6-16um wire diameter for weaving.
In a preferred embodiment of the present invention, the second screen is formed by weaving warp and weft wires at an angle of 20 ° to 90 ° in a diagonal manner.
The utility model has the advantages that: the utility model discloses a multi-angle or zero angle half tone, polymer rete adhesive force is extremely strong, be difficult for droing, the plate-making yield has been improved by a wide margin, the rete is difficult for wearing and tearing broken hole when the half tone is used, the printing life-span is improved more than one time, printing later stage printing lines also can not be widened, there is obvious advantage to battery piece efficiency, the half tone lines of preparation are passed through the china ink nature better, consequently, the restriction of the narrow line width of high accuracy of compression by a wide margin, and the printing is good, the line type is good, there is more obvious promotion to battery piece efficiency like this.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic structural diagram of a multi-angle or zero-angle halftone of the present invention according to a preferred embodiment;
FIG. 2 is a schematic illustration of the position of the first composite scrim structure and film layer lines of FIG. 1;
FIG. 3 is a schematic illustration of the second composite scrim structure and film layer lines of FIG. 1 in position;
FIG. 4 is a schematic view of the third composite scrim structure and film layer lines of FIG. 1 in position;
the labels in the figures are: 1. the screen frame, 2, first silk screen, 3, compound district, 4, second silk screen, 5, polymer rete, 6, rete lines, 7, compound gauze, 8, pattern district, 9, through-hole, 10, warp, 11, weft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the present invention includes:
the utility model provides a multi-angle or zero angle half tone, includes screen frame 1, first silk screen 2, compound district 3, second silk screen 4, polymer rete 5 and rete lines 6, first silk screen 2 set up in screen frame 1, compound district 3 set up the intermediate position at first silk screen 2, second silk screen 4 set up and form compound gauze 7 in compound district 3 of first silk screen 2, polymer rete 5 bond on compound gauze 7, polymer rete 5 on be provided with pattern district 8, rete lines 6 set up respectively in pattern district 8.
In the foregoing, the screen frame 1 is made of aluminum or iron, and the four corners of the screen frame 1 are further provided with through holes 9, so that the screen frame is convenient to mount, fix and use. The first silk screen 2 is made of polyester materials or stainless steel materials with large wire diameter and low mesh number; the second silk screen 4 generally adopts a stainless steel wire mesh, a stainless steel sheet, a nickel electroforming mesh or a tungsten steel alloy silk screen, etc. The wires of the second wire mesh 4 are respectively composed of different warp threads 10 and weft threads 11.
The film lines 6 are of hollow structures, a laser machine is adopted to perform laser etching on the polymer film 5, and unnecessary layers in the film lines 6 are etched, so that complete hollow patterns are formed.
The method specifically comprises the following steps: the arrangement of each screen in the second screen 4 is captured by scanning of the three-dimensional scanner, the whole printing pattern is positioned on the second screen 4, and the scanned pattern is processed and guided into the program of the laser machine. And then, performing laser etching on the polymer film layer 5 by adopting a laser mode and light with a specific wavelength and a program pattern to remove the film layer which is not needed in the pattern lines, thereby obtaining the film layer lines 6 with uniform lines.
Further, the polymer film layer include the PET membrane and the polymer composite who coats on the PET membrane, wherein, polymer composite include polyimide, polyurethane, polyether ether ketone, polyester and dry film, adopt polymer composite as the rete, this material film forming ability is good, the wearability is strong, acid and alkali-resistance, solvent etc.. The polymer film layer 5 is bonded on the composite gauze 7 through polymer adhesive glue, wherein the polymer adhesive glue is thermosetting glue and comprises EVA, PE, pu and epoxy resin. The polymer adhesive glue with strong adhesive force with the composite gauze 7 and the polymer film layer 5 is adopted as an adhesive layer, and has the performances of high temperature resistance, acid and alkali resistance, solvent resistance and the like. The polymer film layer 5 is uniformly attached to the surface of the composite gauze 7 by the action of the polymer adhesive, so that the adhesive property is strong, the bonding property is good, and the falling-off is not easy.
In the present embodiment, 3 types of the second screen 4 are selected: a. the thickness of the gauze vertically woven by the warps 10 and the wefts 11 is consistent, as shown in fig. 2, the lines 6 of the film layer are parallel to the warps 10, are vertical to the wefts 11 and are positioned between the two warps 10; b. the mesh yarns vertically woven by the warps 10 and the wefts 11 are different in size, the steel wire mesh is woven in a mixed mode, and the mesh yarns with the diameters of 290 meshes, 500 meshes and 10-20 mu m are adopted in the warp direction; the weft direction is woven by adopting a wire mesh with the number of 380 and 600 meshes and the wire diameter of 6-16um, and as shown in fig. 3, the film layer lines 6 are all arranged in a way of crossing with the warp 10 and the weft 11; c. the warp threads 10 and the weft threads 11 are woven in an oblique mode at a certain angle, the weaving angle is between 20 degrees and 90 degrees, the optimal oblique weaving angle is between 65 degrees and 75 degrees, and as shown in figure 4, the film layer lines 6 are arranged in a crossed mode at a certain angle with the warp threads 10, are parallel to the weft threads 11 and are located between the two weft threads 11.
The utility model discloses a multi-angle or zero angle half tone compare with prior art, have following advantage:
1) the lines of the film layer formed by laser radiation are clear and flat in outline, uniform in line width and capable of being controlled within 1um in range of range, the printed lines are better in molding, and the method has obvious advantages compared with conventional plate making;
2) under the action of the high-molecular adhesive, the high-molecular composite layer has strong adhesive force and is not easy to fall off, the plate-making yield is greatly improved, the conventional plate-making yield is about 50-60%, the plate-making yield can reach 80-90% by the method, the material utilization rate is greatly improved, and the production cost is saved;
3) the polymer composite layer has super-strong wear resistance, so that a film layer is not easy to wear and break holes when the screen printing plate is used, the printing life is prolonged by more than one time, the average printing life of the screen printing plate of the conventional plate making is about 5 ten thousand, the average printing life of the screen printing plate prepared by the method can reach more than 10 ten thousand, even higher, the printing lines at the later printing stage cannot be widened, and the efficiency of the battery piece is obviously superior;
4) the half tone line of preparation is good to penetrate the black nature, consequently can compress the restriction of high accuracy narrow linewidth by a wide margin, on the basis of printing ink printing of the same race, and design line width can compress 2-5um, and the effect of zero angle net has in addition been avoided blockking of net knot, and design linewidth can recompress 2-5um, and prints well, and the line type is good, has more obvious promotion to battery piece efficiency like this.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a multi-angle or zero angle half tone, its characterized in that includes screen frame, first silk screen, composite region, second silk screen, polymer rete and rete lines, first silk screen setting in the screen frame, composite region set up the intermediate position at first silk screen, second silk screen setting form compound greige in composite region of first silk screen, polymer rete bond on compound greige, polymer rete on be provided with the pattern district, the rete lines set up respectively in the pattern district.
2. The multi-angle or zero-angle screen printing plate according to claim 1, wherein the screen frame is made of aluminum or iron, and through holes are further formed in four corners of the screen frame.
3. The multi-angle or zero-angle screen of claim 1, wherein the first screen is made of polyester material or stainless steel material with thick wire diameter and low mesh number.
4. The multi-angle or zero-angle screen printing plate of claim 1, wherein the second screen mesh is a stainless steel mesh, a stainless steel sheet, a nickel electroformed mesh or a tungsten steel alloy screen mesh.
5. The multi-angle or zero-angle screen printing plate of claim 1, wherein the lines of the film layer are hollow structures.
6. The multi-angle or zero-angle halftone of claim 1, wherein the polymer film layer is bonded to the composite screen by polymer adhesive.
7. The multi-angle or zero-angle halftone of claim 1, wherein the polymer film layer comprises a PET film and a polymer composite material coated on the PET film.
8. The multi-angle or zero-angle screen printing plate as claimed in claim 4, wherein the second screen mesh has a structure of a screen mesh vertically woven by warps and wefts, and has the same thickness.
9. The multi-angle or zero-angle screen printing plate as claimed in claim 4, wherein the second screen mesh has a structure of screen mesh woven by warps and wefts vertically, the number of the screen mesh is different, the steel screen mesh is woven by mixing, and the warp direction is a screen mesh with the diameter of 10-20um and the number of 500 meshes; the weft direction adopts a screen with 380-600 meshes and 6-16um wire diameter for weaving.
10. The multi-angle or zero-angle screen printing plate of claim 4, wherein the second screen mesh has a structure in which warp and weft are woven in an oblique manner at an angle of between 20 ° and 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696458.3U CN210174381U (en) | 2019-05-15 | 2019-05-15 | Multi-angle or zero-angle screen printing plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696458.3U CN210174381U (en) | 2019-05-15 | 2019-05-15 | Multi-angle or zero-angle screen printing plate |
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| CN210174381U true CN210174381U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920696458.3U Active CN210174381U (en) | 2019-05-15 | 2019-05-15 | Multi-angle or zero-angle screen printing plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721417A (en) * | 2020-12-03 | 2021-04-30 | 浙江硕克科技有限公司 | Printing stencil for solar cell and manufacturing process thereof |
| CN113878977A (en) * | 2021-08-24 | 2022-01-04 | 江苏友迪激光科技有限公司 | Screen exposure method and device |
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2019
- 2019-05-15 CN CN201920696458.3U patent/CN210174381U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721417A (en) * | 2020-12-03 | 2021-04-30 | 浙江硕克科技有限公司 | Printing stencil for solar cell and manufacturing process thereof |
| CN113878977A (en) * | 2021-08-24 | 2022-01-04 | 江苏友迪激光科技有限公司 | Screen exposure method and device |
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