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
  • C25D1/02—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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49544—Roller making
  • Y10T29/4956—Fabricating and shaping roller work contacting surface element
  • Y10T29/49563—Fabricating and shaping roller work contacting surface element with coating or casting about a core
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49616—Structural member making
  • Y10T29/4962—Grille making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/4981—Utilizing transitory attached element or associated separate material
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49826—Assembling or joining
  • Y10T29/49863—Assembling or joining with prestressing of part
  • Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
  • Y10T29/49988—Metal casting
  • Y10T29/49989—Followed by cutting or removing material

Definitions

• ABSTRACT OF THE DISCLOSURE A screen cylinderfor a screen printing machine formed by precipitating nickel on a copper alloy cylinder, removing the resulting tubular nickel layer and mounting the same on a cylinder of heat resistant material, the nickel cylinder is then perforated in a helical pattern by a heated needle
• two methods have been generally utilised:
• the fiat screen printing method is, however, disadvantageous in that it involves an intermittent movement so that a fast rate of production cannot be achieved. Moreover it is almost impossible to print continuous coloured surfaces such as lengthwise extending stripes and the like. Difficulties are sometimes experienced in that the screen sticks to the web, so that because of these disadvantages this fiat screen printing method is practically exclusively applied to short special lengths of relatively high quality material of high cost price.
• these guaze cylinders are disadvantageous in that they can exclusively be made of coarse gauze kinds, the said cylinders owing to the galvanic stiffening moreover becoming thick to an extent such that their field of application is limited to very coarse fabrics and patterns (bathing cloth and the like).
• the wall thickness of the cylinder made in this way is entirely independent of the fineness of the perforation, but this thickness of wall should be over 0.06 mm. in order to obtain a sufficient stiffness and life time.
• a design should be provided on the cylinder which can be effected in a simple way.
• the cylinder is covered with a light-sensitive lacquer kind, whereupon by means of a light source the design is photographically transferred to the cylinder.
• the lacquer remains unexposed and therefore soluble. After lighting each unexposed portion can be removed by simply washing the cylinder, whereupon the cylindrical stencil is ready for use.
• the important advantages of the method according to the invention are as follows. Due to the very small wall thickness of the cylinder the quantity of color paste to be applied is limited to a minimum required for printing t-hin, non absorbing, stocks. The latter circumstance is independent of the fineness of the perforation and the dimension of the individual holes.
• the color paste is pressed outwardly from the inner side by means of a doctor.
• the quantity of paint applied is exclusively determined by the wall thickness of the cylinder, while the applied quantity of color paste becomes larger accordingly as this angle is smaller. In this way with one and the same cylinder both extremely thin and very coarse fabrics can be printed over, while maintaining fully the required quality, and this can be done without modification of the composition of the color paste.
• a further advantage of the method according to the to the invention is that a cylinder is obtained which is capable of being used several times that is to say with a different design.
• This design can be photographically applied via a lacquer layer and after use be removed, so that the base cylinder is thereafter available for a new design. This repeated use is not possible with a screen cylinder provided With an etched design.
• the method according to the invention is preferably performed such that the holes in the nickel cuff are provided through a needle having a square cross section, care should be taken that the pitch of the helical pattern is equal to the sum of the dimension of the hole and the distance between two consecutive holes. A very uniform pattern is hereby obtained which in all directions shows the same permeability.
• the selection of the fineness of perforation which for instance can be 60, 80 or 100 mesh gauge is independent of the nature of the material to be printed and is exclusively determined by the fineness of the design to be provided.
• a method for manufacturing a screen cylinder as basic element for making thereof a cylindrical stencil for a screen printing machine comprising the following steps:

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Materials Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Manufacturing & Machinery (AREA)
• Printing Plates And Materials Therefor (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19791244

Family Applications (1)

Country Status (4)

Cited By (8)

Families Citing this family (1)

Citations (6)

• 1964
  • 1964-10-15 NL NL6411984A patent/NL6411984A/xx unknown
• 1965
  • 1965-10-12 US US502813A patent/US3354519A/en not_active Expired - Lifetime
  • 1965-10-15 FR FR35180A patent/FR1450223A/fr not_active Expired
  • 1965-10-29 CH CH1498265A patent/CH445427A/de unknown

Patent Citations (6)

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