EP2703181A2 - Manchon pour cylindre anilox et procédé de fabrication de manchons de cylindres anilox - Google Patents

Manchon pour cylindre anilox et procédé de fabrication de manchons de cylindres anilox Download PDF

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Publication number
EP2703181A2
EP2703181A2 EP20120184223 EP12184223A EP2703181A2 EP 2703181 A2 EP2703181 A2 EP 2703181A2 EP 20120184223 EP20120184223 EP 20120184223 EP 12184223 A EP12184223 A EP 12184223A EP 2703181 A2 EP2703181 A2 EP 2703181A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
outer sleeve
anilox
roll
inner sleeve
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.)
Withdrawn
Application number
EP20120184223
Other languages
German (de)
English (en)
Inventor
Artur Trochimiuk
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.)
Tewex-Repro Sp z oo
Original Assignee
Tewex-Repro Sp z oo
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 Tewex-Repro Sp z oo filed Critical Tewex-Repro Sp z oo
Publication of EP2703181A2 publication Critical patent/EP2703181A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/06—Shells for rollers of printing machines for inking rollers
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • 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
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/14—Location or type of the layers in shells for rollers of printing machines characterised by macromolecular organic compounds

Definitions

  • the present invention relates to anilox rolls.
  • An anilox roll is a cylinder used to deliver a certain amount of ink to a flexographic printing plate in a flexographic printer.
  • a typical anilox roll has a metal core coated by ceramic material, such as Cr 2 O 3 , the surface of which contains fine cells engraved by laser. The amount of ink that is transferred to the plate depends on the angle of the cells, cell volume and line screen (specifying the number of cells per linear inch).
  • a typical anilox roll is presented in a US patent US5840386 . It comprises a sleeve adapted to be mounted on a mandrel to form a liquid transfer roll and comprises a radially expandable inner skin defining a radially inner surface of the sleeve, at least one radially compressible intermediate layer of resilient plastic material and a rigid, self-supporting metal outer tube, which is coated by a wear and corrosion resistant coating, which may be laser-engraved.
  • an anilox roll typically is coated with ceramics.
  • An exemplary process for making a ceramic-coated anilox rolls is presented in US patent application US 2010/0015354 , wherein the anilox roll is manufactured by blurring a roller surface, forming a ceramic layer on the roller surface, grinding the roller surface, polishing the roller surface, forming a pattern on the roller surface using laser, polishing the roller surface and cleaning the roller surface.
  • the aim of the present invention is to provide an anilox roll of an alternative structure and an alternative method for manufacturing the anilox roll.
  • the object of the invention is a method for manufacturing of sleeves for anilox rolls, the sleeve comprising an inner sleeve of compressible material and an outer sleeve having an outer surface with ink transfer cells engraved therein, wherein the method comprises the steps of providing an air mandrel, applying the inner sleeve on the air mandrel, applying adhesive on the inner sleeve, applying the outer sleeve on the inner sleeve, the outer sleeve being made of a black polymer having a hardness of between 85 and 90 Shore D, grinding the outer sleeve, laser-engraving ink transfer cells in the outer surface of the outer sleeve with the user of a Near Infrared (NIR) laser, and polishing the outer surface of the outer sleeve.
  • NIR Near Infrared
  • Another object of the invention is a sleeve for an anilox roll comprising an inner sleeve of compressible material and an outer sleeve having an outer surface with ink transfer cells engraved therein, characterized in that the outer sleeve is made of a black polymer having a hardness of between 85 and 90 Shore D.
  • the anilox roll according to the invention When the anilox roll according to the invention is used in the flexographic printer, its time of service will be much shorter than that of a ceramic-coated roll, due to the lower durability of the plastic outer sleeve as compared to the ceramic coatings.
  • this disadvantage is compensated by a much cheaper and easier production process of the roll. Therefore, accidential damage to the roll will not be a problem any more, as the roll will be cheap to replace.
  • An anilox roll is presented in Fig. 1 . It comprises an air mandrel 10 of a conventional type, terminated with axle stubs 11. A sleeve 20 is applied on the air mandrel.
  • the air mandrel 10 has air passages distributed at its surface and when air is inflated inside the mandrel 10, a cylindrical cushion of air is created around the mandrel that slightly expands and supports the sleeve 20 such as to allow to remove the sleeve from the mandrel or to slid the sleeve 20 on the mandrel. As soon as the air supply is discontinued, the sleeve 20 is firmly fitted on the mandrel 10.
  • Fig. 2 shows a cross-section of the sleeve according to the invention.
  • the sleeve 20 comprises an inner sleeve 21 made of a compressible material, preferably glassfiber.
  • An outer sleeve 22 made of a polymer material is applied on the inner sleeve.
  • the outer sleeve 22 is made of a black material having a hardness of between 85 and 90 Shore D (according to DIN53505).
  • the outer sleeve is made of Iglidur X ® by Igus, GmbH, Germany.
  • the inner sleeve 21 functions as compression layer to allow applying the sleeve on the air mandrel 11. Its thickness should be preferably from 1 to 3 mm.
  • the outer sleeve 22 functions as the direct base for ink transfer cells.
  • the outer sleeve 22 is preferably not coated with any further layers and the ink transfer cells are laser-engraved directly in the outer surface of the outer sleeve 22.
  • the shape, volume and line screen of the cells are adapted to the particular requirements for the anilox roll and are adapted accordingly in a manner equivalent to that used with ceramic-coated rolls.
  • the outer sleeve 22 is formed in a mould to desired dimensions, then grinded to remove any impurities, laser-engraved to obtain the desired shape and density of the ink transfer cells and polished to provide the final quality of the outer surface.
  • the outer sleeve has dimensions corresponding to the particular requirements of the flexographic printer for which it is to be used.
  • the inner sleeve 21 may have an internal diameter of 64,9 mm, a thickness of 2 mm, the adhesive layer may have a thickness of 0,1 mm and the outer sleeve 22 may have a thickness of 5,8 mm.
  • the polymer of the outer sleeve should be resistant to the chemical agents used in the flexographic printer, such as inks, solvents and cleaning agents.
  • Fig. 3 presents the steps of manufacturing the roll.
  • an air mandrel 10 is provided according to the specifics of the flexographic printer to which the anilox roll is designed.
  • step 32 the inner sleeve 21 is applied on the air mandrel 10 and in step 33 it is covered by an adhesive.
  • step 34 the outer sleeve 22 is applied on the sleeve 21 and the adhesive is allowed to cure.
  • step 35 the external surface of the outer sleeve 22 is grinded to remove any impurities.
  • the outer sleeve is laser-engraved to form ink transfer cells therein.
  • NIR Near Infrared

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP20120184223 2012-08-31 2012-09-13 Manchon pour cylindre anilox et procédé de fabrication de manchons de cylindres anilox Withdrawn EP2703181A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL400602A PL222353B1 (pl) 2012-08-31 2012-08-31 Tuleja walca rastrowego i sposób wytwarzania tulei walców rastrowych

Publications (1)

Publication Number Publication Date
EP2703181A2 true EP2703181A2 (fr) 2014-03-05

Family

ID=46967987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120184223 Withdrawn EP2703181A2 (fr) 2012-08-31 2012-09-13 Manchon pour cylindre anilox et procédé de fabrication de manchons de cylindres anilox

Country Status (2)

Country Link
EP (1) EP2703181A2 (fr)
PL (1) PL222353B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL415898A1 (pl) 2016-01-25 2017-07-31 Zakład Poligraficzny Pol-Mak P.D. Makowiak Spółka Jawna Kałamarz farbowy oraz sposób grawerowania kałamarza farbowego
PL450117A1 (pl) * 2024-10-23 2026-04-27 Fol - Druk Flexo Spółka Z Ograniczoną Odpowiedzialnością Sposobu wykonywania nadruków na folii metodą fleksograficzną

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5840386A (en) 1996-02-22 1998-11-24 Praxair S.T. Technology, Inc. Sleeve for a liquid transfer roll and method for producing it
US20100015354A1 (en) 2008-07-16 2010-01-21 Lee Tai-Cheung Method of making rollers with a fine pattern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5840386A (en) 1996-02-22 1998-11-24 Praxair S.T. Technology, Inc. Sleeve for a liquid transfer roll and method for producing it
US20100015354A1 (en) 2008-07-16 2010-01-21 Lee Tai-Cheung Method of making rollers with a fine pattern

Also Published As

Publication number Publication date
PL222353B1 (pl) 2016-07-29
PL400602A1 (pl) 2014-03-03

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