[go: up one dir, main page]

WO1991011330A1 - Blanchet de garniture des cylindres d'un systeme d'impression - Google Patents

Blanchet de garniture des cylindres d'un systeme d'impression Download PDF

Info

Publication number
WO1991011330A1
WO1991011330A1 PCT/EP1990/002072 EP9002072W WO9111330A1 WO 1991011330 A1 WO1991011330 A1 WO 1991011330A1 EP 9002072 W EP9002072 W EP 9002072W WO 9111330 A1 WO9111330 A1 WO 9111330A1
Authority
WO
WIPO (PCT)
Prior art keywords
blanket
film
elastomeric layer
cylinders
base
Prior art date
Application number
PCT/EP1990/002072
Other languages
English (en)
Inventor
Francesco Castelli
Giampietro Invernizzi
Original Assignee
Reeves S.P.A.
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 Reeves S.P.A. filed Critical Reeves S.P.A.
Publication of WO1991011330A1 publication Critical patent/WO1991011330A1/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N10/00Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02Blanket structure
    • B41N10/04Blanket structure multi-layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N2210/00Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/02Top layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N2210/00Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Definitions

  • Printing machines usually include a large number of cylinders performing a variety of functions.
  • many cylinders are arranged to act in direct contact with the paper, to either transfer ink thereto (impression cylinders) or perform some other functions, typically such as paper conveyance or feed-in functions (transport cylinders) and counteracting the pressure from the impression cylinders (pressure cylinders).
  • the aforesaid cylinders are to perform different functions, they may be lined with the same blanket type, comprising a base and an elastomeric layer.
  • This blanket which has been specifically developed to fit.
  • the requirements of the impression cylinders is frequently employed on the pressure and transport cylinders as well, in order to provide similar mechanical and dynamic characteristics (specifically, deformabi Lity and peripheral velocity) for all the cylinder pairs acting on the paper and ensure, therefore, the highest possible paper handling and printing accuracy.
  • the problem underlying this invention is to provide a lining blanket which is not easily fouled, and in any case, can be readily washed clean when used on pressure and transport cylinders without impairing the printing accuracy.
  • a blanket for lining the cylinders of a printing system which comprises a base and an elastomeric layer and is characterized in that it further comprises an outer film on " its elastomeric layer side, said film having low affinity to printing ink.
  • the film does not affect the elastic characteristics of the blanket, which depend on the base . and the elastomer layer, but reduces drastically the chances of ink particles and paper fibrous matter becoming stuck to the blanket.
  • Said film can be formed from a suitable polymeric material, to be selected preferably from polyvinyl chloride (PVC), polyester, polyethylene, polyvinyl fluoride (PVF), and polytetrafluoroethylene (PTFE). It has been found that PVF yields excellent results.
  • PVC polyvinyl chloride
  • PVF polyvinyl fluoride
  • PTFE polytetrafluoroethylene
  • the film is applied to the elastomeric layer by a cold rolling process before subjecting the elastomeric layer to vulcanization. In this way, perfect adhesion of the film on the underlying elastomeric layer can be achieved.
  • the f lm may be structurally independent of the elastomeric layer/base, assembly and be simply combined therewith during the cylinder preparation/assembly stage.
  • FIGS 1 and 2 are fragmentary perspective views showing schematically two printing systems which employ rolls lined with the blanket of this invention.
  • Figure 3 is a sectional view through a blanket according to the invention.
  • FIG. 1 Shown schematically in Figure 1 is a detail view of a printing system S, in particular a roto-offset printing system comprising a unit S1 for printing in four colors on a side A of paper C, and a unit S2 for printing in a single color on the other side B of the paper C.
  • a printing system S in particular a roto-offset printing system comprising a unit S1 for printing in four colors on a side A of paper C, and a unit S2 for printing in a single color on the other side B of the paper C.
  • Each unit, S1 and S2 comprises impression cylinders R and pressure cylinders P lined with a blanket 2 in accordance with this invention.
  • Figure 2 is instead a detail view of a different printing system S', in particular a flexographic printing system, comprising a unit S' for printing in a single color on the two sides A' and B' of paper C*, and a unit S2' for printing in four colors on just the side A".
  • Each unit, S1', S2' comprises impression cylinders R' and pressure cylinders P 1 lined with the blanket 2.
  • the blanket 2 comprises a base 3 and an elastomeric layer 4; the base 3 consists, in turn, of a plurality of plies 5 interleaved with layers 6 of an elastomeric material.
  • One of the layers 6 may be a so-called compressible layer comprising a microporous structure with closed or open cells.
  • the blanket 2 further comprises an outer film 10, applied onto the elastomericLayer 4 and formed from polyvinyl fluoride (PVF).
  • PVF polyvinyl fluoride
  • the blanket 2 For making the blanket 2, use is made, at an initial stage, of a conventional method whereby the base 3 and overlying elastomer
  • That method includes sequential steps for coating the plies with elastomeric material, and the coupling of further plies together by a cold rolling process.
  • the film 10 Prior to subjecting the base 3 with the layer 4 to vulcanization in order to stabi lize -the elastomeric layer 4, the film 10 is cold rolled thereon. Thereafter, the green blanket 2 is subjected to vulcanization, thereby accomplishing at one time stabilization of the elastomeric layer 4 and the anchoring of the film 10 thereon.
  • the blanket 2 so obtained has an outward surface which has an extremely low affinity to printing ink and can be readily washed clean.
  • the film 10 provides excellent resistance to surface abrasion, as well as excellent chemical resistance to the action of the solvents usually employed with printing systems.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

Le blanchet (2) comprend une base (3), une couche en élastomère (4) et un film externe (10) appliqué sur la couche en élastomère (4); le film (10) a une affinité faible pour l'encre d'imprimerie et est constitué de PVC, de polyester, de polyéthylène, de PTFE ou de PVF, de préférence de PVF.
PCT/EP1990/002072 1990-01-26 1990-12-03 Blanchet de garniture des cylindres d'un systeme d'impression WO1991011330A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19172A IT1238678B (it) 1990-01-26 1990-01-26 Tessuto per rivestimento di cilindri di un impianto di stampa, avente bassa affinita' per l'inchiostro
IT19172A/90 1990-01-26

Publications (1)

Publication Number Publication Date
WO1991011330A1 true WO1991011330A1 (fr) 1991-08-08

Family

ID=11155496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/002072 WO1991011330A1 (fr) 1990-01-26 1990-12-03 Blanchet de garniture des cylindres d'un systeme d'impression

Country Status (5)

Country Link
EP (1) EP0511966A1 (fr)
JP (1) JPH05503890A (fr)
AU (1) AU6961891A (fr)
IT (1) IT1238678B (fr)
WO (1) WO1991011330A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629514A1 (fr) * 1993-06-16 1994-12-21 DeMoore, Howard W. Blanchet de couchage d'affinité faible à employer dans des maschines d'impression rotatives en offset
FR2729100A1 (fr) * 1995-01-11 1996-07-12 Reeves Bros Inc Blanchets d'impression pour encre a effet metallique
US5860360A (en) * 1996-12-04 1999-01-19 Day International, Inc. Replaceable printing sleeve
EP0956973A3 (fr) * 1998-05-15 2000-02-23 Heidelberger Druckmaschinen Aktiengesellschaft Blanchet pour l'impression avec transfert complet de l'encre
US6514888B1 (en) * 1994-09-21 2003-02-04 Yamauchi Corporation Cushioning material for forming press
USRE38468E1 (en) 1996-12-04 2004-03-23 Day International, Inc. Replaceable sleeve
DE102009043921A1 (de) 2009-09-01 2011-03-03 Contitech Elastomer-Beschichtungen Gmbh Mehrschichtiges Flächengebilde und Verfahren zu dessen Herstellung
US9868277B2 (en) 2001-07-20 2018-01-16 Printguard, Inc. Anti-marking coverings for printing presses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227485A1 (de) * 1971-06-07 1973-01-04 Ricoh Kk Druckzylinder fuer offsetdruckmaschinen
DE2718224A1 (de) * 1976-05-28 1977-12-15 Rubber Electronic Ind Druckfilz und verfahren zu seiner herstellung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227485A1 (de) * 1971-06-07 1973-01-04 Ricoh Kk Druckzylinder fuer offsetdruckmaschinen
DE2718224A1 (de) * 1976-05-28 1977-12-15 Rubber Electronic Ind Druckfilz und verfahren zu seiner herstellung

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629514A1 (fr) * 1993-06-16 1994-12-21 DeMoore, Howard W. Blanchet de couchage d'affinité faible à employer dans des maschines d'impression rotatives en offset
US6514888B1 (en) * 1994-09-21 2003-02-04 Yamauchi Corporation Cushioning material for forming press
DE19600736A1 (de) * 1995-01-11 1996-07-18 Reeves Bros Inc Drucktücher für Metalleffekt-Druckfarben
GB2296895A (en) * 1995-01-11 1996-07-17 Reeves Bros Inc Printing blanket and method for use with platelet-like pigments
GB2296895B (en) * 1995-01-11 1998-06-10 Reeves Bros Inc Printing blanket and method for use with platelet-like pigments
DE19600736C2 (de) * 1995-01-11 2002-06-27 Reeves Bros Inc Verwendung eines Drucktuches für Metalleffekt-Druckfarben im Offsetdruck
FR2729100A1 (fr) * 1995-01-11 1996-07-12 Reeves Bros Inc Blanchets d'impression pour encre a effet metallique
US5860360A (en) * 1996-12-04 1999-01-19 Day International, Inc. Replaceable printing sleeve
US5983799A (en) * 1996-12-04 1999-11-16 Day International, Inc. Replaceable sleeve
USRE38468E1 (en) 1996-12-04 2004-03-23 Day International, Inc. Replaceable sleeve
EP0956973A3 (fr) * 1998-05-15 2000-02-23 Heidelberger Druckmaschinen Aktiengesellschaft Blanchet pour l'impression avec transfert complet de l'encre
US9868277B2 (en) 2001-07-20 2018-01-16 Printguard, Inc. Anti-marking coverings for printing presses
DE102009043921A1 (de) 2009-09-01 2011-03-03 Contitech Elastomer-Beschichtungen Gmbh Mehrschichtiges Flächengebilde und Verfahren zu dessen Herstellung
WO2011026731A1 (fr) 2009-09-01 2011-03-10 Contitech Elastomer-Beschichtungen Gmbh Objet plat multicouches et procédé de fabrication

Also Published As

Publication number Publication date
IT9019172A0 (it) 1990-01-26
JPH05503890A (ja) 1993-06-24
AU6961891A (en) 1991-08-21
EP0511966A1 (fr) 1992-11-11
IT9019172A1 (it) 1991-07-27
IT1238678B (it) 1993-09-01

Similar Documents

Publication Publication Date Title
EP0372719B1 (fr) Blanchet d'impression ayant une surface non texturée
US7287470B2 (en) Offset lithographic printing press having seamed sleeved printing blanket
CA2068629C (fr) Blanchet d'imprimerie tubulaire sans passage
US5553541A (en) Gapless tubular printing blanket
EP0059944B1 (fr) Procédé et dispositif de manipulation de feuilles imprimées
US4471011A (en) Multi-layer printing blanket
HK1005173B (en) Printing blanket construction having non-textured surface
US6244176B1 (en) Printing apparatus for printing on a medium by transferring a plurality of different color inks onto an elastic endless blanket
US4241657A (en) Four-color halftone printing process for objects having curved surface
CA2116728A1 (fr) Blanchet d'imprimerie sans couture; methode de sa fabrication
WO1991011330A1 (fr) Blanchet de garniture des cylindres d'un systeme d'impression
CA2209834A1 (fr) Manchon cylindrique en caoutchouc pour presses rotatives a bobines offset
EP0660760B2 (fr) Blanchet d'impression a stabilite dynamique d'epaisseur amelioree
JP2747198B2 (ja) 印刷用オフセットブランケット
GB2080204A (en) Offset printing blanket
US6205921B1 (en) Variable image size offset printing system and method of printing
US3261289A (en) Decoration of plastic containers
US20080098916A1 (en) Jacket for impression cylinder or transport cylinder of printing press
EP0375295B1 (fr) Construction pour plaque d'image typographique
WO2000050961A8 (fr) Bande sans fin utilisee dans des systemes d'imagerie numerique et procede de production
US4178850A (en) Method and apparatus for offset printing employing fluoroelastomers
CA2169430A1 (fr) Blanchet d'imprimerie
WO1993021564A1 (fr) Appareil de transfert d'images
US20050183596A1 (en) Rubber blanket with a metal or plastic carrier plate
EP1323527B1 (fr) Habillage universel pour le montage de tissus caoutchoutés sur des cylindres de machines d'impression offset

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR CA CH DE DK ES FI GB HU JP KP KR LK LU MC MG MW NL NO RO SD SE SU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE BF BJ CF CG CH CM DE DK ES FR GA GB GR IT LU ML MR NL SE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 1991900746

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1991900746

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1991900746

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: CA