CN103373096A - Method for improving dot height uniformity of vacuum glass isolating dot matrix of silkscreen printing - Google Patents
Method for improving dot height uniformity of vacuum glass isolating dot matrix of silkscreen printing Download PDFInfo
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- CN103373096A CN103373096A CN2012101276058A CN201210127605A CN103373096A CN 103373096 A CN103373096 A CN 103373096A CN 2012101276058 A CN2012101276058 A CN 2012101276058A CN 201210127605 A CN201210127605 A CN 201210127605A CN 103373096 A CN103373096 A CN 103373096A
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Abstract
This invention provides a method for improving dot height uniformity of a vacuum glass isolating dot matrix of silkscreen printing. The film thickness of photosensitive glue which is arranged on a screen plate is increased to improve the thickness of one-time printing; holes which are formed in the photosensitive glue with a thick film of the screen plate are utilized and combined with multiple printing; when the heights of almost all dots in the dot matrix are slightly larger than the depths of the holes which are formed in the photosensitive glue of the screen plate for a certain quantity, the last time printing is performed and the appropriate screen distance, the angle of a printing scraper and the printing pressure are adjusted to flatten the higher portion of the high dots in the dot matrix and add ink to low dots to obtain the dot matrix which is good in height uniformity.
Description
Technical field
The present invention relates to a kind of method that vacuum glass isolation dot matrix mid point high homogeneity is printed in serigraphy that improves.Specifically a kind of method by making thick light-sensitive surface screen printing forme and adopting twice or repeatedly print reaches when the large tracts of land stock is printed small dot matrix, improves the method for single between points high homogeneity, belongs to printing technology.
Background technology
Heat-insulating sound-proofing vacuum glass for building is by after two plate glass limit section sealings, vacuumize, the pressure that plate glass is produced in order to resist atmospheric pressure, need to be in the middle of two sheet glass small strong point of uniformly dispersing, the height of each strong point one is shown and is guaranteed that each strong point can both uniform stressed as far as possible.Prepare in length and breadth at large-area surface of plate glass that the diameter of interval 20-50mm is about 0.2-1.5mm, the dot matrix of high about 80-150 micron.The wet-film thickness that serigraphy is once printed is no more than 30 microns usually, obtain highly to be the dot matrix of 80-150 micron, and needing repeatedly, printing reaches needed thickness.Through repeatedly printing, repeatedly after the drying, carry out high temperature sintering, obtain to have the dot matrix of certain mechanical strength.Repeatedly printing causes behind the sintering in the dot matrix high consistency of a single point and a single point poor.If do not adopt special technical method, print pass is more, and the each point high homogeneity is poorer in the isolation dot matrix, affects performance of devices.
In screen printing process, printing scraper at the uniform velocity is pressed on the silk screen by stock, with the slurry transfer printing on silk screen surface on stock.Before the printing, suitable gap is arranged between the wire side of free state and the stock, be called the net distance, purpose is that silk screen can break away from stock after the printing, the thicknesses of layers that to be fit to require and printing figure message clearly.As required, the gap between wire side and the stock can be regulated within the specific limits.Just because of the existence of this net apart from the gap, in printing process, wire side is stretched, the closer to screen frame, screen cloth is stretched larger, causes near the wire side of screen frame different from the wire side tension force in centre position, thereby make the printer's ink layer of close screen frame position thin, and centre position China ink layer is thicker.When large tracts of land was printed, this printer's ink layer inhomogeneities was more obvious.Cause the point in centre position thicker, the point of limit section position is thinner.
When adopting existing screen printing technique to make the strong point, printing area is 1200 * 600mm, and strong point height (wet ink film thickness) difference causes the prepared strong point can not satisfy the vacuum glass requirement owing to uneven thickness greater than 20 microns.
Summary of the invention
In order to overcome existing method for printing screen printing thickness greater than 30 microns small dot matrix, adopt the poor defective of single between points high homogeneity that causes when repeatedly printing.The present invention proposes a kind of when screen printing forme is made, and increases photosensitive layer thickness and repeatedly prints the method that improves single between points high homogeneity in the serigraphy printing large tracts of land tiny dots array.
The processing step of the preparation isolation strong point is among the present invention: be mixed with screen printing sizing agent with the low-melting glass powder, through printing, after the dry rear solvent evaporates, rely on the macromolecule conjunctiva in the organic carrier, certain intensity is arranged, but under external force, the low-melting-point glass powder particle in the point can also move.Through repeatedly printing, after drying meets the requirements of thickness, high temperature sintering again, the macromolecule burning volatilization in the slurry, the low-melting-point glass molten sintering becomes brocken spectrum, has certain mechanical strength.
One of technical scheme of the present invention is when making screen printing forme, and at silk screen backside coating photoresists, the thickness of control photoresists reaches more than 50 microns, and prior art screen printing forme photoresists thickness is generally the 10-30 micron.Improve like this ink film thickness that the single printing obtains, compared with prior art, can reduce print pass.
Two of technical scheme of the present invention is to adopt twice or twice above print pass, pass through to regulate printing scraper angle and squeegee pressure in the last printing process, the part that the isolating points of black floor height is exceeded flattens, thereby improves the uniformity of each point height in the dot matrix.Through after the first impression, obtaining highly is the wet film dot matrix of 60-100 micron thickness, after super-dry, the height of point slightly reduces about 10 microns, the single difference in height that exists between points, for the second time or in the follow-up printing process, the hole of a single point thick film photoresists on the screen printing forme in the dot matrix, if the height of certain a single point is greater than on the thick film photoresists during degree of depth of hole, printing scraper just in time is pressed in a single point surface, the China ink amount that sees through is few, and printing scraper is surperficial floating through the out-of-date part that this point is exceeded, and the thickness of this point increases few; If the thickness of certain a single point is less than on the thick film photoresists during degree of depth of hole, printing scraper can not contact the surface of this point, and the China ink amount that sees through is many, fills and leads up the point of original insufficient height.According to actual conditions, after repeatedly printing, the height of nearly all point is all greater than on the thick film photoresists during degree of depth of hole in the dot matrix, regulate the net distance, printing scraper angle and squeegee pressure, print for the last time, Main Function is that the part that high point exceeds is flattened, thereby has guaranteed that the high homogeneity of each point is good in the dot matrix.
The invention has the beneficial effects as follows: adopt the thicknesses of layers that increases photoresists on the screen printing forme to improve the thickness of one-step print, utilize on the screen printing forme hole on the thick film photoresists, in conjunction with repeatedly printing, when the height of nearly all point in the dot matrix all surpass the hole degree of depth a certain amount of after, print for the last time, by regulating net distance, the angle of printing scraper and squeegee pressure, the part that high point in the dot matrix is had more flattens, and obtains the good dot matrix of high homogeneity.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the vacuum glass structural representation.1 is front glass substrate among Fig. 1, the 2nd, and rear glass substrate, the 3rd, the present invention is with the point in the dot matrix of serigraphy preparation, the 4th, limit section sealing layer, the 5th, exhaust outlet sealing layer, the 6th, 426 alloying metal sheets of sealing exhaust outlet, the 7th, getter, 8 is the intervals that are about 0.1mm between two sheet glass.
Fig. 2 is the isolation dot matrix schematic diagram of making at rear glass substrate, the 2nd, and rear glass substrate, the 3rd, the present invention is with the point in the dot matrix of serigraphy preparation.
Fig. 3 is printing screen plate cross section structure schematic diagram of the present invention.The 9th, silk screen, the 10th, the thick film photosensitive layer that applies on the silk screen, the 11st, the hole on the thick film photosensitive layer that applies on the silk screen.
The specific embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Printing area is 2000 * 1400mm, is spaced apart in length and breadth 30mm in the surface of plate glass preparation, and a single point diameter is 1.0mm, highly is the dot matrix of 0.1mm.When making screen printing forme, photoresists thickness is 55 microns, and namely the hole degree of depth of photoresists is 55 microns on the screen printing forme.The first impression obtains highly to be about 70 microns wet film dot matrix, and after super-dry, the height of point is about 65 microns, and through test, single between points difference in height is 22 microns to the maximum.Carry out the second impression, obtain highly to be about 150 microns wet film, after the drying, thickness is about 130 microns, and through test, single between points difference in height is 25 microns to the maximum.Regulate the net distance, the angle of printing scraper and squeegee pressure carry out the 3rd printing, and main rising has more the part pressing with high point.Film thickness is about 135 microns after dry, then carries out sintering, actual test, and the dot thickness average out to is 100 microns behind the sintering, and the height difference maximum of a single point and point is no more than 10 microns.
Printing area is 2000 * 1400mm, is spaced apart in length and breadth 40mm in the surface of plate glass preparation, and a single point diameter is 1.3mm, and thickness is the dot matrix of 0.1mm.When making screen printing forme, photoresists thickness is 60 microns, and namely the hole degree of depth of photoresists is 60 microns on the screen printing forme.The first impression obtains highly to be about 80 microns wet film dot matrix, and after super-dry, the height of point is about 70 microns, and through test, single between points difference in height is 23 microns to the maximum.Carry out the second impression, obtain highly to be about 160 microns wet film, after the drying, thickness is about 145 microns, and through test, single between points difference in height is 25 microns to the maximum.Regulate the net distance, the angle of printing scraper and pressure carry out the 3rd printing, mainly play the pressing effect.Film thickness is about 135 microns after dry, then carries out sintering, actual test, and dot thickness is about 115 microns behind the sintering, and the height difference maximum of a single point and point is no more than 10 microns.
Claims (1)
1. one kind is improved the method that vacuum glass isolation dot matrix mid point high homogeneity is printed in serigraphy, and concrete technical scheme is to adopt the thicknesses of layers that increases photoresists on the screen printing forme to improve the thickness of one-step print; Utilize hole on the screen printing forme thick film photoresists, in conjunction with repeatedly printing, when the height of nearly all point in the dot matrix all be slightly larger than the hole degree of depth a certain amount of after, print for the last time, by regulating suitable net distance, the angle of printing scraper and squeegee pressure flatten the high part that has more of putting in the dot matrix, point low in the dot matrix is mended China ink, obtains the good dot matrix of high homogeneity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101276058A CN103373096A (en) | 2012-04-27 | 2012-04-27 | Method for improving dot height uniformity of vacuum glass isolating dot matrix of silkscreen printing |
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| CN2012101276058A CN103373096A (en) | 2012-04-27 | 2012-04-27 | Method for improving dot height uniformity of vacuum glass isolating dot matrix of silkscreen printing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230154A (en) * | 2014-08-21 | 2014-12-24 | 徐良 | Vacuum glass support distribution technique based on silk-screen printing |
| CN112848723A (en) * | 2020-12-31 | 2021-05-28 | 常州亚玛顿股份有限公司 | Printing process for improving brightness uniformity and picture effect of glass diffusion plate |
| CN113825320A (en) * | 2021-11-24 | 2021-12-21 | 四川英创力电子科技股份有限公司 | Method for manufacturing whole printed circuit board by electric gold plating and local thickening gold and printed circuit board |
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| CN101462426A (en) * | 2008-11-27 | 2009-06-24 | 天津市中环高科技有限公司 | Technology for printing sheet material with 3-D pattern |
| CN101973693A (en) * | 2010-10-20 | 2011-02-16 | 北京印刷学院 | Method for preparing isolated supporting point array between vacuum glass substrates by screen printing |
| JP2011201271A (en) * | 2010-03-26 | 2011-10-13 | Toppan Printing Co Ltd | Screen printing apparatus for pushing coating material on mask surface, and printing method therefor |
| CN102315139A (en) * | 2011-09-07 | 2012-01-11 | 中国航天科技集团公司第九研究院第七七一研究所 | Technology of paste printing for manufacturing micron-sized salient point on wafer |
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Patent Citations (6)
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| CN1449914A (en) * | 2002-04-09 | 2003-10-22 | 新长精密工业株式会社 | Screen printing method |
| CN101050056A (en) * | 2006-04-05 | 2007-10-10 | 罗建超 | New method and equipment for preparing vacuum glass faceplate |
| CN101462426A (en) * | 2008-11-27 | 2009-06-24 | 天津市中环高科技有限公司 | Technology for printing sheet material with 3-D pattern |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104230154A (en) * | 2014-08-21 | 2014-12-24 | 徐良 | Vacuum glass support distribution technique based on silk-screen printing |
| CN112848723A (en) * | 2020-12-31 | 2021-05-28 | 常州亚玛顿股份有限公司 | Printing process for improving brightness uniformity and picture effect of glass diffusion plate |
| CN113825320A (en) * | 2021-11-24 | 2021-12-21 | 四川英创力电子科技股份有限公司 | Method for manufacturing whole printed circuit board by electric gold plating and local thickening gold and printed circuit board |
| CN113825320B (en) * | 2021-11-24 | 2022-02-11 | 四川英创力电子科技股份有限公司 | Method for manufacturing whole printed circuit board by electric gold plating and local thickening gold and printed circuit board |
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Application publication date: 20131030 |