EP1893415B1 - Offsetdrucktuch und herstellungsverfahren - Google Patents

Offsetdrucktuch und herstellungsverfahren Download PDF

Info

Publication number
EP1893415B1
EP1893415B1 EP06764821.2A EP06764821A EP1893415B1 EP 1893415 B1 EP1893415 B1 EP 1893415B1 EP 06764821 A EP06764821 A EP 06764821A EP 1893415 B1 EP1893415 B1 EP 1893415B1
Authority
EP
European Patent Office
Prior art keywords
printing
blanket
layer
printing layer
offset
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.)
Not-in-force
Application number
EP06764821.2A
Other languages
English (en)
French (fr)
Other versions
EP1893415A1 (de
Inventor
Denis Hertzog
Sophie Haraux
Marc Than
Hubert Justine
Jerzy Kuczynski
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.)
Trelleborg Coated Systems France SAS
Original Assignee
Trelleborg Coated Systems France SAS
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 Trelleborg Coated Systems France SAS filed Critical Trelleborg Coated Systems France SAS
Publication of EP1893415A1 publication Critical patent/EP1893415A1/de
Application granted granted Critical
Publication of EP1893415B1 publication Critical patent/EP1893415B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • 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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/02—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
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block

Definitions

  • the invention relates to an offset printing blanket, of the type comprising an outer printing layer, an inner layer through which the blanket is in contact with a support cylinder and at least one compressible intermediate layer and a method for producing such a blanket.
  • the very smooth surface is the peripheral surface of a mirror-polished metal cylinder of the shell.
  • the very smooth surface is the surface of a printing layer obtained by extrusion and calendering in the Nip of a calender against a film with a surface of very low roughness.
  • the aforementioned film can be maintained on the printing face of the printing layer and serve as a protective film.
  • the figure 1 illustrates a first embodiment of an offset printing blanket according to the invention, which involves the use of a calender device 1 essentially comprising a first cylinder of mirror polished finishing metal, advantageously temperature-adjustable, designated by reference 2 and a second surface-facing roll 3 having a coating between which a web 4 constituting the blanket carcass comprises all the layers, except for the printing layer which is made by extrusion in the Nip 6 between the two cylinders 2 and 3, more precisely in the interval in the Nip, delimited between the carcass 4 and the cylinder 2, as is symbolized by the arrow 8.
  • the print layer noted 10 is calendered on the carcass 4.
  • the blanket consists. Since the printing layer is formed in contact with the cylinder 2 having a polished outer surface, that is of a very high external surface quality, to exhibit the surface quality of a mirror, the The outer surface of the printing layer 10 has the very smooth surface qualities required. It should be noted that the carcass upstream of the calender 1 passes through a return roller 13 is downstream, successively on two return rollers 14 and 15. The device further comprises a fourth roller noted 16, but which is not used in the case of the figure 1 .
  • the figure 2 illustrates another method of manufacturing a blanket according to the invention, using a calender 1, which comprises, as in the case of the figure 1 , two cylinders, one of which, namely the cylinder 3, could be identical to the cylinder 3 of the figure 1 , while the other cylinder, now designated by the reference 2 'is a metal cylinder, optionally temperature-adjustable, whose surface does not need to be polished and have the qualities of the surface of the cylinder 2 of the figure 1 .
  • the printing layer 10 is now obtained by extrusion into the Nip 6 of the calender between the carcass 4 and a film 17 passing through the Nip around the cylinder 3 and the return rollers 13 and 16.
  • the blanket 11 with the printing layer 10 now calendered on the carcass 4 passes on the transport roller 15.
  • This embodiment has the advantage that it is no longer the surface of one of the cylinders which must have specific surface qualities required, but the surface against which the printing layer is molded is the surface of the film 17 .
  • the figure 3 illustrates a variant of the process according to the figure 2 , whose particularity lies in the fact that the film 17 remains applied to the printing face which has been previously molded by this film in the Nip 6 of the calender and serves to protect this printing face.
  • the blanket according to the invention also makes it possible to print fragile substrates and ensures a qualitative leap in printing and increased printing comfort for conventional substrates used in offset.
  • the printing surface according to the invention extends the spectrum of use of the offset process to new paper supports, packaging cartons and synthetic films, which opens up new possibilities in terms of services, some of the supports being less expensive and their use providing significant competitive advantages to printers.
  • the traditional media already printable and offset printed are also printed with a higher quality level, more comfort or more security with a blanket according to the invention.
  • the advantage of the invention has been demonstrated concretely by printing Helio paper of 70 grams / m 2 coated and calendered, previously cut to the format of a machine known as Speedmaster 52 having two in-line printing units.
  • the comparative test was carried out with two blankets having essentially the same carcass and the same thickness and having one denoted at one surface of the rectified elastomer type and the other denoted B a surface according to the invention, the known blanket being type sold under the trade name STX 207 by the applicant.
  • the figure 4 made from a photograph of a solid area illustrating the print made and enlarged 100 times, shows that the printed paper is irreversibly degraded by passing through the Nip.
  • the surface of the layer of paper printed by plates indicated at 19 which makes the printing defective is noticeable.
  • these torn parts accumulate on the blanket and thus cause additional and increasing damage to future impressions.
  • the blanket according to the invention has made it possible to obtain an impression which reproduces solid areas correctly, without tearing, as evidenced by the figure 5 also made from a photograph with magnification 100 times.
  • the average surface roughness and the number of peaks were measured by roughness meters such as Mahr's Perthometer and according to DIN 4768 or ISO 4287 or Euronorm 49 ANSI / ASME B46.1 standards and affiliated standards.
  • the advantages afforded by the blanket according to the invention can be explained by the fact that the reduced roughness printer surface according to the invention creates much more favorable operating conditions, compared with known blankets, in particular a reduction in the quantities of water present on the blanket and transmitted to the support, the inking being reduced in similar proportions, because of the high transfer power of the printer surface.
  • the printing surface according to the invention reduces the cleavage forces of the printing ink film, preserving the integrity of the paper.
  • the inks commonly used in offset have high viscosities compared to other process inks such as gravure or flexography, which has consequences on the printing behavior, the separation of the sheet of blanket paper leaving the printing Nip requiring cleavage of the ink film which mechanically biases the substrate, particularly paper layers which may be brittle.
  • the polymers constituting these surfaces are characterized by elastomeric properties of the appropriate rubbery type, a tensile Young's modulus of between 3 and 20 MPa, a holding chemical, that is to say a swelling and loss in weight in the presence of limited fluids, compatible with the offset process and greasy inks or inks crosslinking by radiation and polar or apolar-type surface energies included in a window allowing a perfect water / ink balance and a high transfer of the ink.
  • this layer has a thickness of between 0.15 mm and 0.8 mm, the energy component of dispersive surface (apolar) is between 15 and 30 mJ / m 2 , the polar surface energy component is between 0 and 20 mJ / m 2 and the average surface roughness Ra is less than 0.4 micrometers.
  • the printing surface is made with elastomeric materials of all types compatible with offset printing, such as polymers known as EPDM, IIR, NBR, HNBR, XNBR, SBR, AU, TPU, PE-Co-O, SEBS or more generally SxS, ACM and PAC, VKM and FKM and the relevant combinations.
  • EPDM EPDM
  • IIR IIR
  • NBR NBR
  • HNBR HNBR
  • XNBR XNBR
  • SBR AU
  • TPU PE-Co-O
  • SEBS SEBS or more generally SxS, ACM and PAC, VKM and FKM and the relevant combinations.
  • the molding and protective film it could be PET, PC, PBT or the like, with a treated surface finish or glossy coated paper or the like.
  • the printing surface printer layer according to the invention is made by casting in a calipers Nip against a cylinder having a suitable surface morphology, such as a polished surface, according to the invention. figure 1 .
  • the printer surface according to the invention could also be produced by calendering or extruding the layer in the Nip of a calender against a protective film having one of its faces which has a state which makes it possible to generate the surface extremely Smooth without the required roughness of the printing blanket.
  • the molding film could be used as a protection for the printer surface, any deterioration or alteration during the following production steps and during handling until mounting on the printing machine.
  • the printing surface having elastomeric properties stated is very advantageous insofar as it ensures a chemical resistance compatible with the offset process fluids and a surface morphology such that it allows a significantly improved transfer and relaxation of the perfect substrate at the output of the Nip, which guarantees the integrity of fragile substances.
  • the invention ensures satisfactory printability for fragile substrates and makes it possible to obtain a qualitative leap in printing and increased comfort in printing for conventional substrates used in offset printing.

Landscapes

  • Printing Plates And Materials Therefor (AREA)

Claims (9)

  1. Verfahren zur Herstellung eines Offsetdrucktuchs, umfassend eine äußere Druckschicht, eine innere Schicht, durch die das Tuch mit einem Trägerzylinder in Kontakt ist, mindestens eine komprimierbare Zwischenschicht, und eine Druckschicht (10), deren Druckoberfläche aus einem elastische Eigenschaften vom Gummityp aufweisenden Polymer und einem Youngschen Zugmodul, das zwischen 3 und 20 MPa umfasst ist, und einer chemischen Beständigkeit, die mit dem Offsetverfahren und den bei diesem Verfahren verwendeten Fluiden kompatibel ist, besteht, und eine sehr leichte durchschnittliche Oberflächenrauheit Ra aufweist, die geringer als 0,4 Mikrometer ist, dadurch gekennzeichnet, dass die Druckschicht durch Gießen eines polymeren Materials in den NIP einer Kalandervorrichtung (1) gegen eine formende Oberfläche (2, 17) mit einer sehr leichten Rauheit hergestellt wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Oberfläche eines spiegelpolierten Zylinders (2), der einen Zylinder einer Kalandervorrichtung (1) bildet, als eine formende Oberfläche verwendet wird.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Oberfläche eines Films (17) als eine formende Oberfläche verwendet wird, wobei die Oberfläche des Films (17) eine sehr leichte Rauheit aufweist, die durch den NIP der Kalandervorrichtung (1) hindurchgelangt.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Tuch durch Kalandrieren der Druckschicht (10) im NIP der Kalandervorrichtung (1) auf einem Tuchgehäuse (4) erhalten wird, das alle Schichten bis auf die Druckschicht enthält.
  5. Verfahren nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass der formende Film (17) auf der Druckfläche der Druckschicht (10) gehalten wird.
  6. Offsetdrucktuch (4), umfassend eine äußere Druckschicht, eine innere Schicht, durch die das Tuch mit einem Trägerzylinder in Kontakt ist, mindestens eine komprimierbare Zwischenschicht, und eine Druckschicht, deren Druckoberfläche eine sehr leichte durchschnittliche Oberflächenrauheit Ra aufweist, die geringer als 0,4 Mikrometer ist, und wobei das Tuch nach einem der Ansprüche 1 bis 5 erhalten wird, dadurch gekennzeichnet, dass die Druckoberfläche (10) aus einem elastische Eigenschaften vom Gummityp aufweisenden Polymer und einem Youngschen Zugmodul, das zwischen 3 und 20 MPa umfasst ist, und einer chemischen Beständigkeit, die mit dem Offsetverfahren und den bei diesem Verfahren verwendeten Fluiden kompatibel ist, besteht.
  7. Verfahren nach einem der Ansprüche 6, dadurch gekennzeichnet, dass die Druckoberfläche der Druckschicht (10) eine Oberflächenrauheit Ra aufweist, die zwischen 0,2 und 0,4 Mikrometer umfasst ist.
  8. Tuch nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, dass die Druckschicht eine Dicke aufweist, die zwischen 0,15 mm und 0,8 mm umfasst ist.
  9. Tuch nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass die Druckschicht eine dispersive Oberflächenenergiekomponente aufweist, die zwischen 15 und 30 mJ/m2 umfasst ist, und eine polare Oberflächenenergiekomponente, die zwischen 0 und 20 mJ/m2 umfasst ist.
EP06764821.2A 2005-06-23 2006-06-22 Offsetdrucktuch und herstellungsverfahren Not-in-force EP1893415B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0506392A FR2887490B1 (fr) 2005-06-23 2005-06-23 Blanchet d'impression offset et procede de realisation d'un tel blanchet
PCT/FR2006/001433 WO2006136718A1 (fr) 2005-06-23 2006-06-22 Blanchet d’impression offset et procede de realisation d’un tel blanchet

Publications (2)

Publication Number Publication Date
EP1893415A1 EP1893415A1 (de) 2008-03-05
EP1893415B1 true EP1893415B1 (de) 2015-03-18

Family

ID=35515604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06764821.2A Not-in-force EP1893415B1 (de) 2005-06-23 2006-06-22 Offsetdrucktuch und herstellungsverfahren

Country Status (7)

Country Link
US (1) US20090053514A1 (de)
EP (1) EP1893415B1 (de)
JP (1) JP2008543620A (de)
CN (1) CN101203389A (de)
BR (1) BRPI0611706A2 (de)
FR (1) FR2887490B1 (de)
WO (1) WO2006136718A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101905562A (zh) * 2010-08-05 2010-12-08 广东宏陶陶瓷有限公司 一种瓷砖凹版印刷专用胶印辊及其应用
CN111571885A (zh) * 2020-04-22 2020-08-25 江苏康普印刷科技有限公司 一种油墨转移介质的硫化设备及其硫化方法和用途

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616178A (en) * 1969-04-11 1971-10-26 David M Co Anchor-coated biaxially stress-oriented plastic sheet laminated to rubber-coated paper for use as letterpress and offsetprinting blanket
JPH04176691A (ja) * 1990-11-09 1992-06-24 Kin Yosha Kk 鏡面ブランケット及びその製造方法
WO1993009941A1 (en) * 1991-11-15 1993-05-27 Reeves Brothers, Inc. Compressible printing blanket and method of making same
JPH06270574A (ja) * 1993-03-24 1994-09-27 Fujikura Rubber Ltd 印刷用ブランケットおよびその製造方法
FR2748421B1 (fr) * 1996-05-10 1998-06-12 Rollin Sa Blanchet d'impression reversible
FR2770451B1 (fr) * 1997-11-06 1999-12-31 Rollin Sa Couche lithographique perfectionnee pour blanchet d'impression et blanchet equipe de cette couche
FR2789347B1 (fr) * 1999-02-04 2001-04-06 Rollin Sa Blanchet a proprietes de surface variables pour machine a imprimer
FR2809665B1 (fr) * 2000-05-31 2003-03-14 Rollin Sa Procede de fabrication d'un blanchet d'impression comportant une couche au dos en un materiau polymere et blanchet ainsi obtenu
FR2809667B1 (fr) * 2000-05-31 2003-03-14 Rollin Sa Procede de fabrication d'un blanchet d'impression et blanchet ainsi obtenu
JP2002337472A (ja) * 2001-05-18 2002-11-27 Fujikura Rubber Ltd ブランケットおよびその製造法
US6536342B2 (en) * 2001-06-28 2003-03-25 Macdermid Graphic Arts, Inc. Low resilience, high ink releasing printing surface
AU2003282820B2 (en) * 2002-10-11 2008-10-16 Day International, Inc. Printing blanket and method for reducing corrosion and abrasion of printing blankets and blanket cylinders

Also Published As

Publication number Publication date
JP2008543620A (ja) 2008-12-04
FR2887490B1 (fr) 2008-12-19
WO2006136718A1 (fr) 2006-12-28
BRPI0611706A2 (pt) 2016-08-30
FR2887490A1 (fr) 2006-12-29
US20090053514A1 (en) 2009-02-26
CN101203389A (zh) 2008-06-18
EP1893415A1 (de) 2008-03-05

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