EP1120283B1 - Rouleau avec un revêtement contenant une polyoléfine fluorée - Google Patents

Rouleau avec un revêtement contenant une polyoléfine fluorée Download PDF

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Publication number
EP1120283B1
EP1120283B1 EP00250444A EP00250444A EP1120283B1 EP 1120283 B1 EP1120283 B1 EP 1120283B1 EP 00250444 A EP00250444 A EP 00250444A EP 00250444 A EP00250444 A EP 00250444A EP 1120283 B1 EP1120283 B1 EP 1120283B1
Authority
EP
European Patent Office
Prior art keywords
roller
plastic material
elastomeric
elastic plastic
fluorinated polyolefin
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
EP00250444A
Other languages
German (de)
English (en)
Other versions
EP1120283A1 (fr
Inventor
Hans-Jürgen Schaschke
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.)
Paul Sauer & Co Walzenfabrik KG GmbH
Original Assignee
Paul Sauer & Co Walzenfabrik KG GmbH
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 Paul Sauer & Co Walzenfabrik KG GmbH filed Critical Paul Sauer & Co Walzenfabrik KG GmbH
Publication of EP1120283A1 publication Critical patent/EP1120283A1/fr
Application granted granted Critical
Publication of EP1120283B1 publication Critical patent/EP1120283B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B41N7/04—Shells for rollers of printing machines for damping 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
    • 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
    • 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

Definitions

  • the invention relates to a roller with a cover made of elastomeric or elastic Plastic, the cover has color-repellent properties, as well as their Use especially in the dampening system of an offset printing machine
  • the image and writing elements are photo-mechanically on one transfer sensitized printing plate.
  • This printing plate a flexible multi-metal plate, is clamped on the plate cylinder in the printing machine Applying color to the sensitized areas of the printing plate creates the print image. This will then transferred to a rubber blanket, which is also stretched over a cylinder, and from there onto the printing material.
  • the pressure plate is constantly with one Dampening solution, usually dampening solution, moistened so that the non-printing Make a dampening film that repels the ink.
  • An alternating dampening system provides the necessary dampening of the printing plate arranged rollers with a metallic surface or with a cover from a elastomeric or elastic plastic material.
  • the latter hereinafter called dampening rollers
  • dampening rollers Depending on their function in the dampening unit, they are used, for example, as Dipping, dosing or ductor roller called.
  • the role of the rollers in the dampening system consists in keeping the dampening solution constant and at all machine speeds uniform thickness to transfer to the plate cylinder. The aim is to prevent that ink is transferred from the printing plate to the dampening system, which Dampening solution contaminated and the dampening rollers can also be damaged. There is only one on the surface of the dampening roller lying against the pressure plate Mixing of fountain solution and printing ink to a certain extent is currently acceptable and desired.
  • the dampening water special dampening solution additives are added, often also isopropyl alcohol (IPA), its proportion in practice is 0 to 15% by volume.
  • Special roller covers were also developed, in order to achieve better surface properties for water in accordance with the task previous efforts to improve the properties of the dampening roller cover improve that they do not accept ink, have been expensive cleaning processes so far can not be avoided. Since the printing process is interrupted when cleaning the dampening rollers machine downtime costs are considerable.
  • US Pat. No. 5,320,042 describes a paper guide roller which is made of layers High molecular weight plastic, especially polyethylene or PTFE is provided, which PTFE is applied in a thermal spray process.
  • the layers have one Thickness from approx. 0.2 to 1 mm. Glass balls are also embedded in the cover layer, which to improve the sliding and rubbing properties with respect to the paper web.
  • the layers described do not contain any elastomeric or elastic Plastic material.
  • the invention therefore relates to a roller with a cover made of an elastomeric or elastic plastic material, characterized in that the elastomeric or elastic Plastic material additionally contains fluorinated polyolefin.
  • the invention further relates to in particular the use of the roller according to the invention as a dampening roller in Offset printing machines and a process for their manufacture.
  • Rollers and their structure are well known to those skilled in the art. They consist of one Roll core and a cover.
  • the roller core can be made of metallic, for example Material be made or from thermoplastic or thermosetting plastic, which is advantageous is reinforced by fiber materials.
  • Roll cores are particularly advantageous Glass fiber reinforced (GRP) or carbon fiber reinforced (CFRP) plastic.
  • elastomeric or elastic plastic material for the roll cover elastomers and elastic plastics based on natural rubber (NR) according to the invention, synthetic rubber, e.g. Acrylonitrile butadiene rubber (NBR, HNBR, XNBR), Ethylene rubber (CM, CSM), ethylene propylene rubber (EPM, EPDM), styrene butadiene rubber (SBR), butyl rubber (IIR), polyurethane rubber (PUR), Polyacrylate rubber (ACM), epichlorohydrin rubber (CO, ECO), silicone rubber (Q, VQ, MQ etc.) or chloroprene rubber (CR), elastic thermoplastic, e.g.
  • Polyvinyl chloride PVC
  • thermoplastic elastomer TPE
  • e.g. elasticized polyolefin Styrene block copolymer, copolyester elastomer or thermoplastic polyurethane (TPU)
  • TPU thermoplastic polyurethane
  • the rubber When manufacturing the rollers, the rubber is usually made by vulcanization cross-links and thus maintains the desired strength, while elastic thermoplastics and thermoplastic elastomers by cooling from the melt and pourable Polyurethane systems through polymerisation and cooling in the mold their strength gain.
  • the fluorinated polyolefin contained according to the invention can be partially or completely fluorinated be and may also contain non-olefinic chain building blocks as a copolymer Fluorinated ethylene-propylene copolymer (FEP) or perfluorinated is preferred Polyolefin, especially polytetrafluoroethylene (PTFE, e.g. Teflon®) used.
  • FEP Fluorinated ethylene-propylene copolymer
  • PTFE polytetrafluoroethylene
  • Teflon® polytetrafluoroethylene
  • the amount The fluorinated polyolefin is the respective reference material and the desired strength adjust the color or media-repellent effect.
  • the addition is advantageously 0.5 to 25 wt .-%, in particular 5 to 10 wt .-% based on the reference material and will incorporated as homogeneously as possible into the cover material.
  • fluorinated polyolefin in the form of micro powder or micro fiber. It may be advantageous to add the fluorinated polyolefin prior to addition modify to improve mixing with the reference material, or the fluorinated Polyolefin e.g. for the production of a masterbatch only in part of the reference material to be mixed in, which will later be incorporated into the rest of the material.
  • the fluorinated polyolefin can be in the form of a fiber material, for example a mat, fabric, felt, fleece or the like.
  • This fiber material can be, for example, by impregnation or coating processes with the rubber, thermoplastic elastomer, elastic thermoplastic or the Casting system of the roll cover and applied to the surface of a roll core or a roll
  • the elastomeric or elastic plastic material can also contain conventional additives such as fillers, antioxidants, plasticizers, etc., and functional additives such as substances with functional chemical groups.
  • the latter can be, for example, substances for adjusting the hydrophilicity of the roll surface, for example mono-, oligomeric or polymeric substances with hydrophilic groups, for example hydroxyl, carboxyl, carboxylate, amido, silanol, sulfonic acid and / or sulfonate groups.
  • hydrophilic groups for example hydroxyl, carboxyl, carboxylate, amido, silanol, sulfonic acid and / or sulfonate groups.
  • these and other functional additives can be mixed into the plastic material of the cover or reactively integrated, for example by copolymerization or polymer-analogous reaction, etc.
  • the cover material can also contain polymeric substances which have functional, in particular hydrophilic groups and fluoroalkyl groups.
  • the roll cover can be made up of one, two or more layers, whereby the color-repellent modification according to the invention on a top layer can limit predetermined strength.
  • the reference material of the different layers can either be the same or different his.
  • at least the surface layer of the roll cover contains that fluorinated polyolefin in an amount sufficient, the color or media-repellent To improve the property of the roll cover.
  • the thickness of this layer is advantageously up to 10 mm, preferably up to 5 mm.
  • the roller cover is ground before use to the roller required diameter as well as the necessary cylindricity and surface roughness impart While the roller is in use, the surface can be Cleaning or regrinding can be regenerated.
  • rollers according to the invention can be used wherever a special one color or media repellent property is required Find in offset presses these rollers are advantageous to use as dampening rollers. So try on Printing machines showed that when using the roller according to the invention in the dampening system from Printing plate cylinder is split back into the dampening system from significantly less ink than with Use of previously common rollers. Are several with the usual dampening rollers Cleaning operations required per shift can be done with the roller according to the invention several shifts can be run without cleaning. That way you can Washing costs and machine downtime costs can be significantly reduced.
  • the hardness of the roll cover is set to approx. 15 to 45 Shore A.
  • the hardness is 10 to 100 Shore A.
  • roller according to the invention as a dampening roller lies in better moisture transfer with a significant reduction in Isopropyl alcohol content in the dampening solution.
  • the reduction in the IPA share is made Environmental reasons sought.
  • NBR / PTFE roller In 100 parts by weight of a conventional NBR rubber mixture 10 parts by weight of PTFE powder (PTFE micro-powder, Dupont) incorporated as homogeneously as possible. The mixture was applied to one Roll core applied and vulcanized at approx. 150 ° C The cover of the vulcanized roll was cut to size and ground and the roller as a transfer roller into the Dampening unit of an offset printing machine introduced.
  • PTFE powder PTFE micro-powder, Dupont
  • NBR / PTFE roller In 100 parts by weight of a customary NBR rubber mixture 5 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. An underlayer made of the NBR mixture and a top layer of the NBR / PTFE mixture are placed on one Roll core applied and vulcanized at approx. 150 ° C. The cover of the vulcanized roller is cut to size and ground.
  • the roller is particularly suitable as a metering or Transfer roller can be used in the dampening unit of an offset printing machine.
  • EPDM / PTFE roller In 100 parts by weight of a conventional EPDM rubber mixture 7 parts by weight of PTFE fibers (profiles, Lenzing Plastics) incorporated as homogeneously as possible. The mixture is placed on a roller core applied and vulcanized at approx. 150 ° C. The reference of the vulcanized roller is on Finished cut and sanded.
  • the roller is particularly useful in Dampening unit of an offset printing machine printing with UV-drying inks.
  • PU / PTFE roller in 100 parts by weight of a conventional two-component polyester urethane system 15 parts by weight of PTFE powder (PTFE micro-powder, Dupont) stirred in as homogeneously as possible. The mixture is poured into a roller mold and added polymerized approx. 150 ° C in the heating cabinet.
  • PTFE powder PTFE micro-powder, Dupont
  • roller according to the invention and methods for their Manufacturing opens up to the specialist taking into account his specialist knowledge the fields of rubber and roller technology by those set forth herein Information.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (10)

  1. Rouleau avec un revêtement composé d'une matière plastique élastomère ou élastique à base de caoutchouc, d'une matière thermoplastique élastique, d'élastomère thermoplastique, de systèmes polyuréthaniques coulables ou de mélanges de ces composants, caractérisé en ce que la matière plastique élastomère ou élastique renferme de la polyoléfine fluorée en quantité suffisante pour améliorer la capacité du revêtement du rouleau à rejeter les encres et les fluides.
  2. Rouleau selon la revendication 1, caractérisé en ce que le revêtement est constitué d'une, de deux, ou de plusieurs couches, la couche de surface au moins renfermant la polyoléfine fluorée.
  3. Rouleau selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la polyoléfine fluorée se présente sous forme de poudre ou de fibre et en ce que la fraction de polyoléfine fluorée contenue dans la matière plastique élastomère ou élastique du revêtement est de 0,5 à 25 % en poids, de préférence de 5 à 10 % en poids.
  4. Rouleau selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on utilise en tant que polyoléfine fluorée du polyéthylène fluoré, du polypropylène ou un copolymère d'éthylène et de propylène.
  5. Rouleau selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on utilise en tant que polyoléfine fluorée de la polyoléfine perfluorée, de préférence du polytétrafluoréthylène.
  6. Rouleau selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'on utilise en tant que caoutchouc pour la matière plastique élastomère ou élastique notamment du NR, du NBR, du HNBR, du XNBR, du IIR, du SBR, du CR, du CM, du CSM, de l'ACM, de l'ECO, de l'EPM, de l'EPDM, du PUR ou du caoutchouc silicone ete que l'on utilise en tant que matière thermoplastique élastique notamment du PVC.
  7. Rouleau selon la revendication 6, caractérisé en ce que l'on utilise de préférence en tant que matière plastique élastomère ou élastique du NBR, du CR, du PU ou du PVC, de préférence avec une dureté située dans la fourchette de 15 à 45 Shore A.
  8. Procédé de fabrication d'un rouleau selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'un noyau de rouleau est muni d'un revêtement en matière plastique élastomère ou élastique sur base de caoutchouc, de matière thermoplastique élastique, d'élastomère thermoplastique, de systèmes polyuréthaniques coulables ou de mélanges de ces composants, le noyau du rouleau étant composé d'une matière métallique ou d'une matière plastique notamment renforcée par des fibres de verre ou par des fibres de carbone et la matière plastique élastomère ou élastique renfermant de la polyoléfine fluorée.
  9. Utilisation d'un rouleau selon l'une quelconque des revendications 1 à 7, en tant que rouleau mouilleur dans des machines offset.
  10. Procédé pour l'amélioration de la capacité du revêtement en matière plastique élastomère ou élastique à base de caoutchouc, en matière thermoplastique élastique, en élastomère thermoplastique, en systèmes polyuréthaniques coulables ou en mélanges de ces composants d'un rouleau à rejeter les encres et les fluides, caractérisé en ce que l'on rajoute de préférence à la matière plastique élastomère ou élastique de la polyoléfine fluorée, de préférence un copolymère d'éthylène et de propylène fluoré ou du polytétrafluoréthylène.
EP00250444A 2000-01-24 2000-12-19 Rouleau avec un revêtement contenant une polyoléfine fluorée Expired - Lifetime EP1120283B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10002683 2000-01-24
DE10002683A DE10002683C2 (de) 2000-01-24 2000-01-24 Walze mit farbabweisendem Bezug

Publications (2)

Publication Number Publication Date
EP1120283A1 EP1120283A1 (fr) 2001-08-01
EP1120283B1 true EP1120283B1 (fr) 2004-07-07

Family

ID=7628390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00250444A Expired - Lifetime EP1120283B1 (fr) 2000-01-24 2000-12-19 Rouleau avec un revêtement contenant une polyoléfine fluorée

Country Status (5)

Country Link
US (1) US20010051567A1 (fr)
EP (1) EP1120283B1 (fr)
AT (1) ATE270620T1 (fr)
DE (2) DE10002683C2 (fr)
ES (1) ES2223397T3 (fr)

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DE20202014U1 (de) † 2002-02-09 2002-04-11 MAN Roland Druckmaschinen AG, 63075 Offenbach Schichtkörper zum Verhüten des Verschmierens von Maschinenteilen oder Bedruckstoffen in einer Verarbeitungsmaschine
DE102004054425A1 (de) 2004-11-10 2006-05-18 Weros Dienstleistungen Gmbh Feuchtmittel- und/oder Verdruckmittelübertragungseinrichtung für Druckmaschinen
DE102007008719A1 (de) * 2007-02-22 2008-08-28 Man Roland Druckmaschinen Ag Übertragungszylinder einer Druckmaschine
EP2242651A2 (fr) * 2008-02-12 2010-10-27 Heidelberger Druckmaschinen AG Rotative d'impression à plat
AR074143A1 (es) * 2008-05-28 2010-12-29 Boettcher Gmbh & Co Felix Rodillo para impresora
DE102008035737A1 (de) * 2008-07-31 2010-02-04 Brückner Maschinenbau GmbH & Co. KG Anlegewalze für die Schmelzanlegung an einer Gießwalze
US8428495B2 (en) * 2008-10-28 2013-04-23 Hewlett-Packard Developent Company, L.P. Coatings for LEP printers, LEP printer structures, LEP printers, and methods of inhibiting sludge formation
MX2014012023A (es) * 2012-04-06 2015-04-13 Stowe Woodward Licensco Llc Una cubierta de rodillo hidrofoba y/o anfifobica.
DE102012103079A1 (de) * 2012-04-10 2013-10-10 Krones Ag Rollenförderer für Kunststoffvorformlinge
CA2968344C (fr) 2014-12-08 2023-03-14 Kinnos Inc. Compositions d'additifs pour la desinfection pigmentee et procedes correspondants
CN104610623A (zh) * 2015-01-28 2015-05-13 柳州市中配橡塑配件制造有限公司 一种汽车同步带用耐热橡胶材料
BR112018016369A2 (pt) 2016-02-12 2018-12-26 Kinnos Inc composições e métodos para uso na descontaminação de superfície
EP3487974A4 (fr) * 2016-07-25 2020-08-05 Kinnos Inc. Dispositifs et compositions et procédés apparentés destinés à être utilisés dans la décontamination de surfaces
CN109789981B (zh) * 2016-09-29 2020-08-28 东丽株式会社 夹持辊及薄膜卷绕体的制造方法
CA3104884A1 (fr) 2018-07-12 2020-01-16 Kinnos Inc. Dispositifs, compositions et procedes d'utilisation associes destines a decontaminer des surfaces

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Also Published As

Publication number Publication date
DE50007014D1 (de) 2004-08-12
EP1120283A1 (fr) 2001-08-01
DE10002683A1 (de) 2001-08-16
ES2223397T3 (es) 2005-03-01
US20010051567A1 (en) 2001-12-13
DE10002683C2 (de) 2003-11-06
ATE270620T1 (de) 2004-07-15

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