EP0694088A1 - Process for producing a base mould for electrolycally producing seamless rotary screen printing stencils, in particular of nickel - Google Patents
Process for producing a base mould for electrolycally producing seamless rotary screen printing stencils, in particular of nickelInfo
- Publication number
- EP0694088A1 EP0694088A1 EP95908917A EP95908917A EP0694088A1 EP 0694088 A1 EP0694088 A1 EP 0694088A1 EP 95908917 A EP95908917 A EP 95908917A EP 95908917 A EP95908917 A EP 95908917A EP 0694088 A1 EP0694088 A1 EP 0694088A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- depressions
- coating
- base body
- areas
- nickel
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 15
- 238000010022 rotary screen printing Methods 0.000 title claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000011159 matrix material Substances 0.000 claims description 31
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000007650 screen-printing Methods 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011231 conductive filler Substances 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910000480 nickel oxide Inorganic materials 0.000 description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
- B41C1/142—Forme preparation for stencil-printing or silk-screen printing using a galvanic or electroless metal deposition processing step
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/10—Moulds; Masks; Masterforms
Definitions
- the invention relates to a method for producing a mother die for the galvanic production of seamless rotary screen printing stencils, in particular made of nickel, wherein a metallic mother die base body with a cylindrical lateral surface on its outer circumference with a vertically distributed vertical pattern ⁇ is provided which have a round or polygonal outline and between which remain a regular network grid bars, and the recesses are then filled flush with an electrically non-conductive filler up to the height of the grid bars, after which then repeated by galvanic application gene of metal and axial peeling of the resulting sleeve screen printing stencils can be generated.
- mother matrices for the stated purpose have so far been produced by so-called moletting.
- the desired recess grid is pressed into the outer surface of the mother matrix base body by means of a molette.
- the molette is a relatively small roller which is rolled on the circumference of the mother matrix base body along a helical line under strong pressure.
- the molette is marked on the circumferential surface in the desired grid. arranged projections, which represent a negative image of the desired recesses for the mother matrix.
- this known method requires a high level of machine, personnel and time.
- the production of molettes is very complex since extensive mechanical processing steps are required for this. Every change in the grid also makes it necessary to produce a modified molette.
- a further disadvantage is the fact that the material of the mother matrix base body must be relatively soft so that the desired depressions can be pressed or rolled in at all by the molette.
- the mother matrix base body which is provided with a thin chrome plating on the surface.
- the mother matrix base body In order to increase the stability, which is required due to the rolling off of the molette with a high pressure force, the mother matrix base body must also have a stable steel core, which makes the mother matrix overall very heavy and thus difficult to handle and transport.
- the depressions that can be produced by the mettling can only be truncated pyramids or truncated cones with relatively flat inclined flanks. This leads to the disadvantage that the electrically non-conductive filling compound lying in the recesses becomes very thin at the edges of the recesses and breaks out easily there.
- the screen printing stencil is then formed when the completely galvanized stencil is pulled off, and the surface of the mother die is damaged by metal noses protruding inwards from the stencil, which could form in the breakout points of the filling compound.
- the mother die is made of relatively soft copper, against which, for example, nickel as a preferred screen printing stencil material is relatively hard, despite the chrome plating, which can only be very thin, grooves are easily formed in the longitudinal direction of the mother die trize, which limit their usability to relatively few production runs for the production of screen printing templates.
- EP 0 030 774 A1 discloses further processes of the type mentioned at the outset.
- the first known method for producing a mother die it is described there that the depressions which are to be filled with non-conductive material are produced by etching.
- the document does not describe how this etching is to be carried out, but it is obvious to the person skilled in the art that an etching mask must be used for this. However, the document also gives no information on the manufacture, type and treatment of the etching mask.
- a second manufacturing method for manufacturing a mother die it can be seen from the document that a well-controlled energy beam is brought into a non-conductive state directly in the well-like regions of the mother die body by thermal action.
- a method of the type mentioned at the outset which is characterized by the following method steps: a) the outer surface of the mother matrix base body is coated with a photo- or thermosensitive or electro-sensitive coating, b) the coating is applied by means of a beam controlled in accordance with electronically stored data is exposed to the positive or negative image of the desired deepening grid and then immediately or after going through a development process in the areas in which the depressions are provided, by means of a chemical and / or physical ent Removal process removed, c) in the areas of the outer surface of the mother matrix base body freed from the coating, the depressions are formed by etching or electrolytic metal removal, d) the remaining parts of the coating are completely removed and e) the depressions are filled with the electrically non-conductive filling compound.
- step b) is carried out as follows: b) the coating is controlled by means of a beam controlled according to electronically stored data in the areas in which the depressions are located are provided, immediately removed.
- the invention offers the advantage that all of the mettling tools and the devices required for this are no longer required. This saves a great deal in terms of technical, personnel and time expenditure. Since the outline shape of the depressions and the grid in which these depressions are arranged are now stored electronically, the outline shape of the depressions and their distribution within the grid can be produced very precisely and changed with little effort and sent to the respective person Needs to be adapted without, as previously required, new mouldering tools having to be manufactured.
- the depressions are given a contour which offers an improved hold of the electrically non-conductive filling compound.
- the filling compound also has a comparatively large thickness within the depressions in its edge regions, so that breakouts of the filling compound are avoided.
- no protruding metal lugs can form during the later electroplating of the screen printing stencil form, which results in a better quality of the screen printing stencils and avoids damage to the mother die when the stencil is pulled off axially.
- the mother die has a longer service life, which in practice can be two to three times as long as was achievable with mother dies previously used.
- an ultraviolet laser beam or a thermally acting laser beam or an electron beam is used as the beam.
- the beams mentioned can be generated and focused comparatively easily, so that, in cooperation with an appropriately selected coating with suitable sensitivity, indentations and grids can be produced with a high resolution and accuracy as well as large MESH numbers.
- the base body no longer has to consist of the relatively soft copper, but can also consist of a harder metal, which is preferably nickel.
- the metal nickel offers the advantage of high hardness, high strength and high structural density. Furthermore, it has good electrical conductivity and is easy to galvanize. In this way, chromium plating of the surface of the mother die can be omitted, which facilitates the recycling of mother dies that can no longer be used.
- Another advantage that can be achieved by using nickel as the material for the mother die is that the nickel surface of the mother die is automatically protected by the formation of a nickel oxide layer, which, however, remains electrically conductive. At the same time, however, this nickel oxide layer ensures that the screen printing stencil that is electroplated onto the mother die is easily pulled off the mother die leaves, since the nickel oxide layer on the mother matrix acts as a release agent.
- a hollow cylindrical nickel sleeve can also be used as the mother matrix base body. This is possible without further ado because, owing to the elimination of the mechanical pressure forces between the molette and the mother matrix base body, the latter no longer has to have a particularly high mechanical stability.
- the use of a hollow cylindrical nickel sleeve allows easier handling and easier and cheaper transport or shipping between the manufacturer of the mother die and the generally non-identical manufacturer of screen printing stencils.
- a curable synthetic resin or a curable ceramic mass is preferably used as the electrically non-conductive filling compound.
- These materials have the advantage that, on the one hand, they can be introduced into the depressions as a still viscous mass and, on the other hand, they adhere very firmly to the depressions after curing and have high strength and surface quality. In particular, after hardening, these materials can also be obtained by mechanical processes, e.g. Turning or grinding, workable, without loosening from the recesses or breaking out at the edge of the recesses.
- the depressions are preferably produced with a regular hexagonal outline; furthermore, the depressions are preferably distributed in a honeycomb pattern in a hexagonal grid. This offers the advantage that the screen printing stencils produced on this mother die have high strength and stability with low weight and a good web-passage ratio. On- However, due to the electronic storage of the outline shape of the depressions and their distribution in the grid, there is of course every freedom in the design of these parameters.
- FIG. 1 to 5 of the drawing show a section of the circumferential area of a mother matrix base body during various process steps;
- FIG. 6 of the drawing shows a section of the circumferential area of a finished mother die.
- the mother matrix base body 1 is made of metal and has a cylindrical jacket surface 10.
- the base body 1 can be designed as a cylinder or hollow cylindrical sleeve.
- a sensitive coating 2 is applied in the form of a comparatively thin layer, which is shown exaggeratedly thick in the drawing.
- This coating 2 can be a photo-, thermosensitive or electrosensitive material, as is known per se. Application methods for such coatings to achieve a uniform layer thickness are also known and need not be explained in more detail here.
- FIG. 2 of the drawing shows the mother matrix base body 1 during a method step in which, by means of a laser 30, which emits a laser beam 3 in a controlled manner, an exposure of the sensitive coating 2, here with the negative image of the desired recesses he follows.
- the mother matrix base body 1 and the laser 30 are relative to one another in two directions, preferably the axial direction and the circumferential direction. movement so that the entire circumferential surface of the mother matrix base body 1 is gradually covered.
- the beam 3 is switched on and off in accordance with electronically stored data in order to expose the positive or negative image of a desired raster on the coating 2, depending on whether the latter reacts photopositively or photonegatively.
- the coating 2 is changed by the exposure in the areas 20 such that it becomes insoluble for a subsequent chemical and / or physical removal process. Between the exposed areas 20 there remain unexposed areas 21 which correspond to the areas in which depressions are later to be produced in the base body 1.
- FIG. 3 of the drawing shows the mother matrix base body 1 after going through the removal process in which the unexposed areas 21 of the coating 2 have been removed. From the coating 2, only the exposed areas 20 remain, which form a reticulated grid of outwardly projecting webs, each of which includes regular hexagons.
- FIG. 4 of the drawing shows the mother matrix base body after it has passed through an etching bath or an electrolytic removal process.
- metal of the mother matrix base body 1 is removed where the etching acid or the electrolyte liquid has access to the jacket surface 10.
- the acid or the electrolyte liquid has no access to the outer surface 10 of the base body 1, so that metal removal cannot take place here.
- the remaining part 20 of the coating 2 is also removed by a suitable removal process, after which the mother matrix base body has the surface shape shown in FIG. 5. This is characterized by a grid of depressions 11 with a hexagonal outline, between which webs 12 are distributed in a network. The outer surface of the webs 12 corresponds to the lateral surface 10 of the base body 1.
- FIG. 6 of the drawing finally shows the finished mother die 1 ', in which the recesses 11 are now completely filled with a filling compound 4 up to the level of the upper edge of the webs 12 and thus up to the original lateral surface 10 of the mother die base body 1 are.
- areas with different electrical properties are formed on the lateral surface 10 of the mother die 1 'in the desired distribution, namely in the area of the surface of the filling compound 4 electrically non-conductive areas and in the area of the surface of the webs 12 electrically conductive areas.
- the finished mother die 1 ' can then be used in a known manner several times for the galvanic production of seamless rotary screen printing stencils, metal then being deposited galvanically in the region of the electrically conductive webs 12 on the outer surface 10 of the mother die 1', until a desired layer thickness is reached.
- This screen printing sleeve thus formed can then in the axial direction of the mother die 1 ', i.e. parallel to the lateral surface 10, are withdrawn from the mother die 1 '.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Adornments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4404560A DE4404560C1 (en) | 1994-02-12 | 1994-02-12 | Process for producing a mother die for the galvanic production of seamless rotary screen printing stencils, in particular made of nickel |
DE4404560 | 1994-02-12 | ||
PCT/EP1995/000458 WO1995021951A1 (en) | 1994-02-12 | 1995-02-09 | Process for producing a base mould for electrolycally producing seamless rotary screen printing stencils, in particular of nickel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0694088A1 true EP0694088A1 (en) | 1996-01-31 |
EP0694088B1 EP0694088B1 (en) | 1999-05-19 |
Family
ID=6510148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95908917A Expired - Lifetime EP0694088B1 (en) | 1994-02-12 | 1995-02-09 | Process for producing a base mould for electrolycally producing seamless rotary screen printing stencils, in particular of nickel |
Country Status (9)
Country | Link |
---|---|
US (1) | US5972194A (en) |
EP (1) | EP0694088B1 (en) |
CN (1) | CN1095881C (en) |
AT (1) | ATE180291T1 (en) |
AU (1) | AU1706195A (en) |
DE (2) | DE4404560C1 (en) |
ES (1) | ES2133736T3 (en) |
GR (1) | GR3031024T3 (en) |
WO (1) | WO1995021951A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1851060B (en) * | 2006-04-10 | 2011-05-04 | 南京航空航天大学 | Hollow part electroforming furrow filling method |
CN101271275B (en) * | 2008-04-28 | 2011-08-10 | 彩虹集团电子股份有限公司 | Horn net manufacturing technique by etching method |
CN101373334B (en) * | 2008-10-13 | 2011-02-16 | 彩虹集团电子股份有限公司 | Method for manually shivering materials of grating net semi-etching connection point |
KR100903962B1 (en) * | 2008-11-21 | 2009-06-25 | 주식회사 센트랄 | Ball seat manufacturing method |
DE102009017686A1 (en) | 2009-04-16 | 2010-10-28 | Steinemann Technology Ag | Rotatable screen printing unit for use in screen printing machine, has gripper that protrudes into outer contour of circular screen during running through column and partially imprints lateral surface of circular screen |
DE102011015456A1 (en) | 2011-03-30 | 2012-10-04 | Thomas Walther | Screen printing method for sheet-fed printing machine, involves filling openings of circumferential screen printing frame with coating agent by scraper adjoined to inner surface of screen printing frame |
KR102320282B1 (en) * | 2017-09-04 | 2021-10-29 | 후지필름 가부시키가이샤 | Electropole disk and method for manufacturing electric pole mold using the electric pole disk |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2166366A (en) * | 1935-11-30 | 1939-07-18 | Edward O Norris Inc | Means and method of producing metallic screens |
BE788470A (en) * | 1971-11-12 | 1973-01-02 | Buckbee Mears Co | IMPROVED PROCESS FOR INCREASING THE RIGIDITY OF IMPRESSIO SCREENS |
AT311294B (en) * | 1972-05-23 | 1973-11-12 | Zimmer Johannes | Stencil sleeve |
US3960675A (en) * | 1975-04-17 | 1976-06-01 | Motter Printing Press Co. | Method for deplating and replating rotogravure cylinders |
DE2544603A1 (en) * | 1975-10-04 | 1977-04-14 | Kabel Metallwerke Ghh | Matrix cylinder for electrolytic mfr. of templates - for rotary screen printing, including mfr. of printed circuit boards |
IN155834B (en) * | 1976-10-05 | 1985-03-16 | Iten K Ag | |
JPS54156880A (en) * | 1978-05-04 | 1979-12-11 | Kenseido Kagaku Kogyo Kk | Production of sleeve for rotary screen printing |
DE2965624D1 (en) * | 1978-09-26 | 1983-07-14 | Wallace Watson Sword | The production of rotary screen printing cylinders |
NL7909089A (en) * | 1979-12-17 | 1981-07-16 | Stork Screens Bv | METHOD FOR MANUFACTURING A DIE |
DE3011192A1 (en) * | 1980-03-22 | 1981-10-01 | Hoechst Ag, 6000 Frankfurt | METHOD FOR THE PRODUCTION OF SCREEN PRINTING STENCILS ON A GALVANIC WAY |
JPH0793255B2 (en) * | 1987-07-23 | 1995-10-09 | 松下電器産業株式会社 | Fine pattern forming method |
JPH01254944A (en) * | 1988-04-04 | 1989-10-11 | Fuji Photo Film Co Ltd | Silver halide photographic sensitive material |
NL8802928A (en) * | 1988-11-28 | 1990-06-18 | Stork Screens Bv | A METHOD AND APPARATUS FOR FORMING A RESISTANT PATTERN ON A CYLINDRICAL ART AND A METAL CYLINDER CREATED BY THE USE OF SUCH A RESISTANCE PATTERN. |
BE1002787A7 (en) * | 1989-01-31 | 1991-06-11 | Centre Rech Metallurgique | DEVICE FOR THE MANUFACTURE, BY ELECTRODEPOSITION, OF A PERFORATED METAL SHEET OF LOW THICKNESS, AS WELL AS METHODS OF MAKING AND USING SUCH A DEVICE. |
JP2727445B2 (en) * | 1991-05-25 | 1998-03-11 | 株式会社 シンク・ラボラトリー | Rotary screen manufacturing method |
US5328537A (en) * | 1991-12-11 | 1994-07-12 | Think Laboratory Co., Ltd. | Method for manufacturing screen printing plate |
US5334815A (en) * | 1992-01-15 | 1994-08-02 | Wear Guard Corp. | Apparatus and method for producing a printing screen |
US5573815A (en) * | 1994-03-07 | 1996-11-12 | E. I. Du Pont De Nemours And Company | Process for making improved metal stencil screens for screen printing |
-
1994
- 1994-02-12 DE DE4404560A patent/DE4404560C1/en not_active Revoked
-
1995
- 1995-02-09 US US08/535,131 patent/US5972194A/en not_active Expired - Lifetime
- 1995-02-09 WO PCT/EP1995/000458 patent/WO1995021951A1/en active IP Right Grant
- 1995-02-09 EP EP95908917A patent/EP0694088B1/en not_active Expired - Lifetime
- 1995-02-09 AU AU17061/95A patent/AU1706195A/en not_active Abandoned
- 1995-02-09 AT AT95908917T patent/ATE180291T1/en not_active IP Right Cessation
- 1995-02-09 CN CN95190085A patent/CN1095881C/en not_active Expired - Lifetime
- 1995-02-09 DE DE59505958T patent/DE59505958D1/en not_active Expired - Lifetime
- 1995-02-09 ES ES95908917T patent/ES2133736T3/en not_active Expired - Lifetime
-
1999
- 1999-08-18 GR GR990402102T patent/GR3031024T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9521951A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1123039A (en) | 1996-05-22 |
ATE180291T1 (en) | 1999-06-15 |
CN1095881C (en) | 2002-12-11 |
DE4404560C1 (en) | 1995-08-24 |
US5972194A (en) | 1999-10-26 |
ES2133736T3 (en) | 1999-09-16 |
AU1706195A (en) | 1995-08-29 |
WO1995021951A1 (en) | 1995-08-17 |
GR3031024T3 (en) | 1999-12-31 |
EP0694088B1 (en) | 1999-05-19 |
DE59505958D1 (en) | 1999-06-24 |
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