EP1967363B1 - Dispositif de sérigraphie et son procédé de fabrication - Google Patents

Dispositif de sérigraphie et son procédé de fabrication Download PDF

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Publication number
EP1967363B1
EP1967363B1 EP07023414.1A EP07023414A EP1967363B1 EP 1967363 B1 EP1967363 B1 EP 1967363B1 EP 07023414 A EP07023414 A EP 07023414A EP 1967363 B1 EP1967363 B1 EP 1967363B1
Authority
EP
European Patent Office
Prior art keywords
fabric
screen printing
template
coating
printing device
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.)
Active
Application number
EP07023414.1A
Other languages
German (de)
English (en)
Other versions
EP1967363A3 (fr
EP1967363A2 (fr
Inventor
Dieter Dr. Schwanke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOENEN GmbH
Original Assignee
KOENEN GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KOENEN GmbH filed Critical KOENEN GmbH
Publication of EP1967363A2 publication Critical patent/EP1967363A2/fr
Publication of EP1967363A3 publication Critical patent/EP1967363A3/fr
Application granted granted Critical
Publication of EP1967363B1 publication Critical patent/EP1967363B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/24—Stencils; Stencil materials; Carriers therefor
    • B41N1/247—Meshes, gauzes, woven or similar screen materials; Preparation thereof, e.g. by plasma treatment

Definitions

  • the present invention relates to a screen printing device with a fabric and arranged in the fabric template in the form of a photolithographically structured emulsion.
  • the invention further relates to a method for producing such a screen printing device.
  • Screen printing is a printing process in which an ink or print paste is printed through a fine mesh fabric onto the material to be printed with a knife-like tool, the rubber squeegee. Screen printing is therefore also referred to as a through-printing process.
  • the mesh apertures of the fabric are impermeable to the ink or printing paste by a stencil (e.g., photolithographically structured emulsion) disposed on the fabric.
  • LTCC Low Temperature Cofired Ceramics
  • vias involve represents.
  • the circuit elements are screen printed on the green sheets of the later ceramic support, which are then stacked and sintered.
  • thin-film process is itself a costly process.
  • thin-film structures can only be realized coplanar on the substrate surface. The use of multi-layer technology with fine-line structures could bring a significant cost reduction compared to thin-film technology and also offer the advantage of using several levels, including for screen layers.
  • the screen frames are usually made of aluminum and are covered with a steel mesh, which can be achieved during the printing process elastic deflection of the screen.
  • An elastic deflection of the screen during the printing process is required for the so-called bounce, d. H. for the realizable between tissue and substrate to be printed distance. For example, too little jump may lead to cloud formation in the print, since the fabric behind the squeegee does not immediately detach from the printed paste film - it remains "stuck" in the printed paste.
  • Too much bounce on the other hand, increases tissue tension which, on the one hand, leads to exceeding the elastic yield strength of the tissue and thus leading to premature aging of the fabric and, on the other, impure printouts due to paste spatters, so that the template edge can no longer draw a clean print image ,
  • the wire thickness of the fabrics used today is approximately between 30 micrometers and 16 micrometers.
  • the permeability of the fabric is described by its mesh size, which is indicated by the so-called mesh number.
  • 325 mesh means that there are 325 stitches per square inch (square inches).
  • the stencil is often made as a direct stencil by a photographic process.
  • the fabric is coated with photosensitive polymers, which with be exposed to the desired structures. Subsequently, the exposed structures are developed and the unexposed areas are washed out.
  • the fabric, stencil (emulsion) and printing frame together form the screen printing screen.
  • the printing paste is applied to the screen and distributed evenly on the structured screen by means of a so-called flood doctor blade. Subsequently, the actual printing takes place, wherein the squeegee is pulled over the wire with a suitably adjusted hardness.
  • the screen is in this printing at a certain distance from the substrate to be printed, for example, an LTCC film.
  • the screen is pressed by means of the printing doctor down elastically in the direction of the substrate to be printed.
  • a shear of the printing paste which reduces its viscosity due to their thixotropic property during the shear and thereby can be pressed through the openings of the screen printing screen. After completion of the shear stress, the printing paste again has the initial viscosity.
  • d. H If smaller resolutions of the printed structures (fine-line structures) are to be achieved, d. H. For example, if the resolution is less than 50 microns or even less than 30 microns, there is a problem that the fabric and the template must have correspondingly fine structures with small openings and these fine structures and small openings in the template and the fabric through the flow of colors or pastes inhibit the screen printing screen.
  • the plastic filaments of the fabric are coated with a vapor-deposited or sputtered cladding layer, which in turn is covered by a metal coating which bears the emulsion of the stencil and which has been produced by electroplating.
  • the cladding layer is produced by a sputtering or sputtering process with a layer thickness of about 5 nanometers to over 200 nanometers.
  • the application of the cladding layer by means of electrodeposition. For example, a copper or nickel layer is applied.
  • the metallised plastic fabric results in a high reproducible stencil quality with excellent edge definition and exact ink dosage, as it ensures minimum elongation with sufficient basic strength.
  • the EP 1 147 887 A1 discloses a screen printing plate for applying coatings to a glass sheet, especially disks of an automobile, which has an oil-repellent coating on both sides of the screen. Here, large-area coatings are carried out. The said printing plate is therefore not suitable for printing fine structures.
  • the publication DE 10 2004 055 113 A1 discloses a method of hydrophilizing screen-printed stencil media which substantially improves the wetting of the stencil stencil sheet with stencil material.
  • the screen printing stencil carrier ie the screen printing fabric
  • this is provided with very fine oxide particles, such as nanometer particles of metal oxide, for example. Titanium oxide, alumina or zirconium oxide, and a wetting agent.
  • a wetting agent for example, a surfactant can be used.
  • the hydrophilizing agent may also be employed in the removal of stencil material from the screen-printed fabrics, preferably by adding it to the decoating liquid.
  • the screen stencil carrier is not only freed from the stencil material but at the same time hydrophilized for the next coating process. Consequently, the coating of the screen-printed fabric indicated in this publication does not solve the above-indicated problem of producing finer structures.
  • the object of the present invention is therefore to provide a screen printing apparatus which enables the printing of finer structures.
  • the object of the present invention is to provide a method for producing a screen printing device, which allows easy and cost-effective the printing of finer structures, in particular for a steel fabric.
  • the object is achieved by a screen printing apparatus in which the fabric and / or the stencil has a nanocrystalline coating which reduces the adhesion of a screen printing paste or a screen printing ink to the fabric and / or to the stencil on the surface.
  • the indicated coating reduces the inhibition of the passage or passage of the screen printing paste or the screen printing ink through the fabric stitches or the openings in the stencil so that a fabric with a smaller mesh size or a stencil with smaller openings can be used and thus finer structures can be generated.
  • the effect of reduced adhesion of the screen printing paste or the screen printing ink to the fabric or stencil is also referred to as the lotus effect.
  • the non-stick coating becomes particularly simple by means of a nanocrystalline coating, which preferably has crystals with a diameter of less than 10 nanometers.
  • a nanocrystalline coating which preferably has crystals with a diameter of less than 10 nanometers.
  • Such a coating also has the advantage that it can be applied very thin so that it does not cause any significant additional change in the mesh size or the opening width of the template.
  • a carbon compound having a diamond-like structure (DLC) and / or a fluoride and / or a fluorine-based compound, preferably Teflon (polytetrafluoroethylene, PTFE), and / or a silicon-based compound can be used.
  • the screen printing device has a coating with a layer thickness between about 100 nm and about a few micrometers.
  • these layer thicknesses are sufficiently thick to ensure with a high degree of stability the easier passage of the screen printing ink or the screen printing paste through the fabric stitches or the stencil openings, and on the other hand permit the printing of fine-line structures.
  • the coating is designed to be oleophobic in order to suppress sticking / sticking .
  • This design of the screen printing device causes a clean distribution of the screen printing paste or screen ink (flooding of the screen) on the top and a good separation of the screen printing paste or the screen printing ink after the elimination of the shear forces applied by the doctor on the underside of the screen printing screen.
  • the above object is also achieved by a method of manufacturing a screen printing apparatus in which the fabric is adhered to the fabric prior to applying the template to the fabric and / or the fabric and the template is applied to the fabric after application of the template to the fabric a screen printing paste or a screen printing ink to the fabric or stencil-reducing coating is provided.
  • the inventive method causes very simple and inexpensive, the tissue can be used with smaller mesh size or templates with smaller openings and thereby allows the pressure of finer structures.
  • the method according to the invention involves only a single additional coating step for this purpose.
  • the known method for producing a Siebdrückvorraum is thereby not significantly expensive or complicated.
  • a particularly simple and cost-effective coating option is given by a coating which is nanocrystalline, with a crystal diameter of less than 10 nanometers.
  • a coating having a layer thickness of between about 100 nm and about a few micrometers is produced in the production method according to the invention. As already indicated above, these layer thicknesses allow the printing of fine-line structures with a high resistance.
  • Further improvement of the coating properties can be achieved by placing the fabric and / or the stencil on top with an oleophilic (lipophilic / hydrophobic / hydrophobic) coating and / or on the underside of the fabric and / or the stencil and / or the interstices of the fabric and / or the template are provided with an oleophobic coating.
  • the steel mesh of a screen printing device is coated after a plasma cleaning step by means of a plasma CVD process either with a silicone-like amorphous surface with about 100 nm layer thickness or with a DLC (Diamond Like Carbon) layer of 1 .mu.m (for example, trade name CARBOCER ® from PLASMA ELECTRONIC GmbH).
  • the DLC coating is significantly harder than the silicone-type, whereas the latter can be applied at lower process temperatures.
  • the coating of the fabric takes place at a temperature of about 80 ° C or correspondingly lower.
  • the template is applied to the fabric.
  • the stencil can be provided with this coating. The sequence depends on the material of the stencil and its heat resistance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Textile Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Coloring (AREA)

Claims (10)

  1. Dispositif de sérigraphie comportant un tissu et un gabarit agencé sur le tissu, caractérisé en ce que le tissu et/ou le gabarit comprend respectivement sur la surface un revêtement nanocristallin qui réduit l'adhésion d'une pâte de sérigraphie ou d'une encre de sérigraphie sur le tissu et/ou sur le gabarit.
  2. Dispositif de sérigraphie selon la revendication 1, caractérisé en ce que le revêtement nanocristallin présente des cristaux d'un diamètre de moins de 10 nanomètres.
  3. Dispositif de sérigraphie selon l'une des revendications précédentes, caractérisé en ce que le revêtement contient un composé carboné avec une structure semblable à celle du diamant (DLC) et/ou un fluorure et/ou un composé à base de fluore, de préférence du PTFE, et/ou un composé à base de silicium.
  4. Dispositif de sérigraphie selon l'une des revendications précédentes, caractérisé en ce que le revêtement présente une épaisseur de couche comprise entre environ 100 nm et environ quelques micromètres.
  5. Dispositif de sérigraphie selon l'une des revendications précédentes, caractérisé en ce que sur la face supérieure du tissu et/ou du gabarit le revêtement est réalisé oléophile (hydrophile/hydrophobe, lipophile/lipophobe) et/ou sur la face inférieure du tissu et/ou du gabarit et/ou dans les intervalles du tissu et/ou du gabarit il est réalisé oléophobe.
  6. Procédé de fabrication d'un dispositif de sérigraphie selon l'une des revendications précédentes, caractérisé en ce que l'on munit le tissu, avant de monter le gabarit sur le tissu, et/ou on munit le tissu et le gabarit, après avoir monté le gabarit sur le tissu, sur la surface respective du côté tourné vers le produit à imprimer, ainsi que dans les intervalles, d'un revêtement nanocristallin qui réduit l'adhésion d'une pâte de sérigraphie ou d'une encre de sérigraphie sur le tissu et/ou sur le gabarit.
  7. Procédé selon la revendication 6, caractérisé en ce que le revêtement nanocristallin est réalisé avec un diamètre de cristal de moins de 10 nm.
  8. Procédé selon l'une des revendications 6 à 7, caractérisé en ce que le revêtement contient un composé carboné avec une structure semblable à celle du diamant (DLC) et/ou un fluorure et/ou un composé à base de fluore, de préférence du PTFE, et/ou un composé à base de silicium.
  9. Procédé selon l'une des revendications 6 à 8, caractérisé en ce que l'on réalise le revêtement avec une épaisseur de couche comprise entre environ 100 nm et environ quelques micromètres.
  10. Procédé selon l'une des revendications 6 à 9, caractérisé en ce que l'on munit le tissu et/ou le gabarit, sur leur face supérieure, d'un revêtement oléophile (lipophile/lipophobe, hydrophile/hydrophobe), et/ou sur la face inférieure du tissu et/ou du gabarit et/ou dans les intervalles du tissu et/ou du gabarit, on les munit d'un revêtement oléophobe.
EP07023414.1A 2007-03-07 2007-12-04 Dispositif de sérigraphie et son procédé de fabrication Active EP1967363B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007010936A DE102007010936A1 (de) 2007-03-07 2007-03-07 Siebdruckvorrichtung und Verfahren zur Herstellung derselben

Publications (3)

Publication Number Publication Date
EP1967363A2 EP1967363A2 (fr) 2008-09-10
EP1967363A3 EP1967363A3 (fr) 2010-11-03
EP1967363B1 true EP1967363B1 (fr) 2018-03-07

Family

ID=39530384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07023414.1A Active EP1967363B1 (fr) 2007-03-07 2007-12-04 Dispositif de sérigraphie et son procédé de fabrication

Country Status (5)

Country Link
US (1) US8122825B2 (fr)
EP (1) EP1967363B1 (fr)
DE (1) DE102007010936A1 (fr)
HU (1) HUE037624T2 (fr)
LT (1) LT1967363T (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011083733A1 (de) * 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Siebdruckschablone und Verfahren zum Beschichten von Siebdruckschablonen
CN103192594A (zh) * 2012-01-06 2013-07-10 昆山允升吉光电科技有限公司 一种太阳能复合网版
CN102615932B (zh) * 2012-04-06 2013-12-11 深圳光韵达光电科技股份有限公司 一种金属印刷模板及其制造方法以及其使用的涂层溶液
EP3000612A4 (fr) * 2013-05-20 2017-03-08 Taiyo Yuden Chemical Technology Co., Ltd. Structure et plaque d'impression au pochoir ayant été soumises à une modification en surface destinée à améliorer la mouillabilité et leurs procédés de production

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT30664B (de) 1906-04-02 1907-11-25 Anton Mattig Zählwerk.
US2790726A (en) * 1953-02-12 1957-04-30 Wilson Arts & Crafts Silk screen paint materials
US3008601A (en) * 1954-12-13 1961-11-14 Collette Gregoire Polytetrafluoroethylene coated cooking utensils
US3672934A (en) * 1970-05-01 1972-06-27 Du Pont Method of improving line resolution in screen printing
US4088073A (en) * 1973-12-27 1978-05-09 Xerox Corporation Process for preparing ink releasing stencil
US3951060A (en) * 1973-12-27 1976-04-20 Xerox Corporation Process for preparing waterless lithographic masters
US4718340A (en) * 1982-08-09 1988-01-12 Milliken Research Corporation Printing method
GB9319070D0 (en) * 1993-09-15 1993-11-03 Ncr Int Inc Stencil having improved wear-resistance and quality consistency and method of manufacturing the same
DE19738873A1 (de) 1996-09-13 1998-04-16 Sefar Ag Siebdruckform und Vorrichtung dafür
US6669781B2 (en) * 1997-09-23 2003-12-30 Micron Technology, Inc. Method and apparatus for improving stencil/screen print quality
US20020011159A1 (en) 2000-04-19 2002-01-31 Asahi Glass Company, Limited Screen printing plate, method for making it and screen printing method
DE10231698A1 (de) * 2002-03-26 2003-10-23 Fraunhofer Ges Forschung Verfahren zur Verbesserung des Transfers von Zusatzmaterial mittels einer Schablone auf einen Träger sowie zugehörige Schablone
US7152530B2 (en) * 2002-12-19 2006-12-26 Heidelberger Druckmaschinen Ag Printing form and method for modifying its wetting properties
DE102004055113A1 (de) 2004-11-15 2006-05-18 Kissel & Wolf Gmbh Verfahren zur Hydrophilierung von Siebdruckschablonenträgern sowie Verfahren zur Entfernung von Schablonenmaterial von einem Siebdruckschablonenträger und Entschichtungsflüssigkeit hierfür
DE102005045350B4 (de) 2005-09-22 2009-07-16 Siemens Ag Druckschablone eines SMT-Prozesses

Also Published As

Publication number Publication date
HUE037624T2 (hu) 2018-09-28
EP1967363A3 (fr) 2010-11-03
US20080216682A1 (en) 2008-09-11
EP1967363A2 (fr) 2008-09-10
LT1967363T (lt) 2018-07-10
DE102007010936A1 (de) 2008-09-11
US8122825B2 (en) 2012-02-28

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