US3586609A - Method for making a cylindrical metallic designed stencil - Google Patents

Method for making a cylindrical metallic designed stencil Download PDF

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Publication number
US3586609A
US3586609A US747990A US3586609DA US3586609A US 3586609 A US3586609 A US 3586609A US 747990 A US747990 A US 747990A US 3586609D A US3586609D A US 3586609DA US 3586609 A US3586609 A US 3586609A
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United States
Prior art keywords
stencil
designed
cylindrical
matrix
screen
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.)
Expired - Lifetime
Application number
US747990A
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English (en)
Inventor
Lodewijk Jansen
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Stork Amsterdam NV
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Stork Amsterdam NV
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Publication date
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    • 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
    • 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
    • C25D1/02—Tubes; Rings; Hollow bodies
    • 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
    • C25D1/20—Separation of the formed objects from the electrodes with no destruction of said electrodes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/12—Production of screen printing forms or similar printing forms, e.g. stencils

Definitions

  • the present invention relates to designed stencils and in the printing of textile and the like materials, more particularly, to a method of making a cylindrical designed stencil of metal.
  • a designed stencil is generally used for printing a desired pattern on the materials.
  • the printing machines are generally of the roll type and thus require a cylindrical stencil. Many problems have been encountered in economically and quickly making of cylindrical designed stencils.
  • a conventional process of making a designed stencil such as that used in screen printing, utilizes a plain mesh stencil as a starting point.
  • the beginning structure is essentially a cylindrical screen member.
  • a cover layer is provided on portions of the screen to deline thev desired pattern which is to be printed.
  • the starting point is an electrically conducting cylindrical sublayer or base.
  • a screen of electrically insulating spots are formed on this cylinder to define the pattern thereon.
  • a layer of metal is deposited by an electrical process to a predetermined thickness on the cylinder but the spots of electrically insulating material will remain uncovered.
  • the outer diameter of the cylindrical base is then reduced and the metallic layer is removed from the cylinder.
  • the resulting metallic layer is in cylindrical form and comprises the cylindrical designed stencil and has both the desired pattern with a screen of openings or apertures thereon.
  • FIG. 1 is a longitudinal sectional view of a portion of a plain-mesh cylindrical stencil formed according to the prior art
  • FIGS. Za-d are views similar to that of FIG. 1 but showing progressive steps according to the method of the present invention.
  • FIG. 3 is a view similar to that of FIGS. 2a-d and shows diagrammatically a portion of a stencil mounted on a carrier to carry out the method according t0 the present invention.
  • the starting point is a screen or matrix 1 having a desired regular pattern of pits 2 on its outer surface or the pits may be apertures extending all the way through the cylinder wall.
  • the pits or holes are filled with an electrically insulating material.
  • a metal is deposited on the outer surface of the matrix 1 to result in the formation of a screen stencil 3.
  • This stencil will have a regular pattern of openings 4 therein which coincide with the pits 2 in the surface of the matrix 1.
  • An impervious cover layer is applied upon those parts of the plain-mesh screen where no ink or printing paste should pass during the printing operation.
  • the starting point of the process is a cylindrical sleve 5 of an electrically conducting material such as copper.
  • the outer peripheral surface of the sleeve 6 is provided with a regular pattern of pits or recesses according to the desired neness of the stencil which is to be made. These recesses are filledA with an electrically insulating material 6. It is pointed out that it has been generally known to employ such a matrix 5 for the making of plain-mesh stencils without any design thereon, such as shown in FIG. 1. According to the present invention it is still possible to start with the same base but to manufacture a complete designed stencil in one electro-deposition operation.
  • a very thin layer 7 of a photosensitive emulsion is then applied to the outer surface of the matrix 5.
  • This emulsion has the property that the areas thereof which are exposed to light, after a suitable treatment known in the art, adhere better to the sublayer or base as defined by the matrix 5 than the unexposed areas of the emulsion.
  • the emulsion has the additional property that after such exposure it becomes electrically conductive or can be suitably treated so as to be electr-ically conductive.
  • a substance which has the desired properties as set forth above is an aqueous polyvinyl alcohol having suspended resin components wherein metal salts are absorbed which are insoluble in water.
  • the layer 7 of the emulsion is exposed to light through a mask 8 having therein the positive of the proposed design. Those portions of the mask which correspond to the open areas of the screen being made are solid and will block off the light. Consequently, during the printing operation the ink or printing paste will penetrate through the screen openings in the open area of the stencil and a printed image will be formed on the sheet or web material being printed.
  • Exposure through the mask l8 results in only portions of the layer 7 of the emulsion to be exposed and these exposed portions will adhere more tightly to the sublayer or base 5 than the unexeposed areas of the layer of emulsion.
  • the structure After the unexposed areas of the layer 7 have been washed away and removed from the matrix 5, the structure will have the appearance as illustrated in FIG. 2b.
  • the matrix 5 will now have areas 9a, 9b and 9c of the light sensitive layer remaining well adhered to the matrix.
  • the resulting metal layer which forms the stencil is now removed from the matrix and has the appearance as shown in FIG. 2d. It can be seen that the stencil Iwill have raised portions corresponding to the exposed areas of the light sensitive emulsion and open areas in which there will be a pattern of apertures or openings in the form of a screen.
  • the cylindrical matrix 5, prior to being coated with the light sensitive emulsion, may be mounted on an expandable mandrel so that the outer diameter of the matrix is increased on the order of a few hundredths of a millimeter.
  • the expandable mandrel can be released to cause the outer diameter of the matrix to be reduced. This reduction of the outer diameter of the cylindrical matrix will facilitate removal of the cylindrical designed stencil.
  • the carrier for the emulsion is a polyvinyl alcohol with water in which are dissolved resin components, such as epoxy resins, together with water-insoluble metal salts such as AgCl or ZnS.
  • a water-soluble bi-chromate eg. Ag, Cu or Zn
  • a chemical reduction is performed after which the metal particles in the areas 9a-c will contact each other thoroughly over the entire thickness of the layer, so that the electro-depositing operation produces a 'well-adhering metallic layer 10.
  • a carrier I11 in the form of an inflatable bag upon which a screen stencil 12 is mounted.
  • the screen stencil is formed with holes 13 which are filled with an electrically insulating material 14.
  • the entire outer peripheral surface 17 of the stencil may be ground or abraded to insure that the surface of the stencil is a good electrical conductor.
  • a metallic layer is deposited on the stencil 12 to result in the formation of a designed stencil 15 having apertures 16 arranged according to the desired pattern. No metal will tbe deposited on those areas of electrically insulating material 14 and, accordingly, the stencil 15 will have openings corresponding to these areas.
  • the stencil 12 having openings 13 therethrough functions in the same manner as the matrix 5, as described above, having the pits or recesses 6 in the outer surface thereof.
  • the inflatable bag 11 can be removed and the stencil 12 can be loosened from the designedy stencil formed thereon by inserting a thin strip between these two cylindrical members and pressing the stencil 12 inwardly to deform the stencil into a kidney-shaped section. The stencil 12 can then be readily removed from the designed stencil 15.
  • the present invention has disclosed a relatively inexpensive process for forming a cylindrical designed stencil in one operation as compared to previously known processes wherein it was necessary to employ a prefabricated plain-mesh screen stencil.
  • the designed stencil is formed upon a base or sublayer which may comprise the usual matrix, such as a cylindrical sleeve as used for the manufacture of plain-mesh stencils.
  • the sublayer may also comprise a prefabricated stencil mounted on a suitable carrier and having the screen apertures filled with an electrically non-conducting material where metal is deposited on those portions of the base not covered by the insulating areas by a suitable electr-ical process.
  • a method of making a metallic designed cylindrical stencil using electro deposition the steps of forming a screen pattern of electrically insulating spots on a cylinder of an electrically conducting material, applying onto the cylinder a thin layer of electrically conducting light sensitive substance which increases in adherence to the cylinder after exposure to light, exposing the light sensitive layer to light through a mask having the desired patterns thereon to form the pattern on the light sensitive layer, removing the nonexposed areas of the light sensitive layer, electrically deposit/ing a layer of metal to a predetermined thickness on the cylinder With the spots of electrically insulating material not covered by the light sensitive layer remaining uncovered, and removing the metallic layer from the cylinder to form a cylindrical designed stencil.
  • the cylinder comprises a cylindrical designed stencil upon which additional designed stencils are formed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
US747990A 1967-07-28 1968-07-26 Method for making a cylindrical metallic designed stencil Expired - Lifetime US3586609A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6710444A NL6710444A (es) 1967-07-28 1967-07-28
NL6710443A NL6710443A (es) 1967-07-28 1967-07-28

Publications (1)

Publication Number Publication Date
US3586609A true US3586609A (en) 1971-06-22

Family

ID=26644221

Family Applications (1)

Application Number Title Priority Date Filing Date
US747990A Expired - Lifetime US3586609A (en) 1967-07-28 1968-07-26 Method for making a cylindrical metallic designed stencil

Country Status (6)

Country Link
US (1) US3586609A (es)
AT (1) AT287743B (es)
CH (1) CH494126A (es)
DE (1) DE1771882B2 (es)
FR (1) FR1576051A (es)
NL (2) NL6710443A (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039397A (en) * 1975-05-02 1977-08-02 Fritz Buser Ag Maschinenfabrik Process for producing screen material
US4042466A (en) * 1974-12-27 1977-08-16 Stork Brabant B.V. Method for manufacturing a metalized screen gauze
US4401520A (en) * 1980-03-22 1983-08-30 Hoechst Aktiengesellschaft Process for the preparation of screen printing stencils by an electroplating method
US4490217A (en) * 1984-02-24 1984-12-25 Armstrong World Industries, Inc. Method of making a stencil plate
US5772864A (en) * 1996-02-23 1998-06-30 Meadox Medicals, Inc. Method for manufacturing implantable medical devices
US6062384A (en) * 1997-11-10 2000-05-16 Kotec's Company, Ltd. Fastener structure
US20030018381A1 (en) * 2000-01-25 2003-01-23 Scimed Life Systems, Inc. Manufacturing medical devices by vapor deposition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156880A (en) * 1978-05-04 1979-12-11 Kenseido Kagaku Kogyo Kk Production of sleeve for rotary screen printing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042466A (en) * 1974-12-27 1977-08-16 Stork Brabant B.V. Method for manufacturing a metalized screen gauze
US4039397A (en) * 1975-05-02 1977-08-02 Fritz Buser Ag Maschinenfabrik Process for producing screen material
US4401520A (en) * 1980-03-22 1983-08-30 Hoechst Aktiengesellschaft Process for the preparation of screen printing stencils by an electroplating method
US4490217A (en) * 1984-02-24 1984-12-25 Armstrong World Industries, Inc. Method of making a stencil plate
AU568881B2 (en) * 1984-02-24 1988-01-14 Armstrong World Industries, Inc. Method of making a stencil plate
US5772864A (en) * 1996-02-23 1998-06-30 Meadox Medicals, Inc. Method for manufacturing implantable medical devices
US6062384A (en) * 1997-11-10 2000-05-16 Kotec's Company, Ltd. Fastener structure
US20030018381A1 (en) * 2000-01-25 2003-01-23 Scimed Life Systems, Inc. Manufacturing medical devices by vapor deposition
US6938668B2 (en) 2000-01-25 2005-09-06 Scimed Life Systems, Inc. Manufacturing medical devices by vapor deposition
US20060000715A1 (en) * 2000-01-25 2006-01-05 Whitcher Forrest D Manufacturing medical devices by vapor deposition
US8460361B2 (en) 2000-01-25 2013-06-11 Boston Scientific Scimed, Inc. Manufacturing medical devices by vapor deposition

Also Published As

Publication number Publication date
DE1771882C3 (es) 1974-10-03
AT287743B (de) 1971-02-10
DE1771882B2 (de) 1974-02-28
NL6710444A (es) 1969-01-30
DE1771882A1 (de) 1972-02-17
CH494126A (de) 1970-07-31
FR1576051A (es) 1969-07-25
NL6710443A (es) 1969-01-30

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