EP2995456B1 - Procédé de nettoyage d'une surface rotative d'impression sous forme d'un cylindre - Google Patents

Procédé de nettoyage d'une surface rotative d'impression sous forme d'un cylindre Download PDF

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Publication number
EP2995456B1
EP2995456B1 EP15182180.8A EP15182180A EP2995456B1 EP 2995456 B1 EP2995456 B1 EP 2995456B1 EP 15182180 A EP15182180 A EP 15182180A EP 2995456 B1 EP2995456 B1 EP 2995456B1
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EP
European Patent Office
Prior art keywords
cleaned
detergent
cleaning
printing
water
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.)
Active
Application number
EP15182180.8A
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German (de)
English (en)
Other versions
EP2995456A1 (fr
Inventor
Dorothea Dr. Becker
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.)
Manroland Goss Web Systems GmbH
Original Assignee
Manroland Goss Web Systems 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 Manroland Goss Web Systems GmbH filed Critical Manroland Goss Web Systems GmbH
Publication of EP2995456A1 publication Critical patent/EP2995456A1/fr
Application granted granted Critical
Publication of EP2995456B1 publication Critical patent/EP2995456B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/12—Brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L41/00—Cleaning arrangements or devices
    • B41L41/06—Cleaning arrangements or devices for offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/23—Brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/24—Wiping devices using rolls of cleaning cloth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/50—Selection of materials or products for cleaning
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines

Definitions

  • the invention relates to a method for cleaning a printing surface.
  • Printing units of an offset printing press have a forme cylinder, a transfer cylinder, an inking unit and preferably a dampening unit.
  • On the form cylinder of such a printing unit at least one printing form is positioned, which may be formed as a printing plate, which is why forme cylinders are also referred to as a plate cylinder.
  • On the transfer cylinder of such a printing unit at least one transfer mold is positioned, which may be formed as a blanket, which is why transfer cylinders are also referred to as rubber cylinders.
  • the inking unit of such a printing unit is used for the application of printing ink and the optionally existing dampening unit of such a printing unit the application of dampening solution to the or each positioned on the form cylinder printing form.
  • the printing ink is transferred via the or each transfer mold positioned on the transfer cylinder to a printing material to be printed, whereby the printing material to be printed is moved through a printing gap positioned between the transfer cylinder and an impression cylinder.
  • the counter-pressure cylinder may be a satellite cylinder or else a transfer cylinder of another printing unit.
  • a so-called blanket structure can form on the or each transfer form, which can consist of color residues as well as constituents of the printing material to be printed. Such a blanket structure affects the achievable print quality and can lead to web breaks when printing a web-shaped substrate. Therefore, it is known in the art to clean the or each transfer mold positioned on a transfer cylinder prior to the start of a new print production.
  • a blanket wash can also be done during production.
  • a cleaning device is employed at full or reduced production speed to a rotating transfer cylinder and it is a detergent on the transfer cylinder, namely applied to the or each arranged on the transfer cylinder transfer mold.
  • cleaning devices for printing presses, which serve to clean a rotating cylindrical surface of a printing press cylinder or a printing press roll or a surface of a cylinder surface arranged on a printing plate or transfer mold, with which so in particular a blanket washing can be performed.
  • cleaning devices have a housing, wherein in the housing of such a cleaning device preferably more cleaning devices, namely a washing device and a separate drying device, are added.
  • the washing device is used to wash the respective surface to be cleaned with the aid of a liquid detergent.
  • the drying device serves to dry the cleaned surface.
  • solvent-based, liquid detergents are used in practice.
  • highly solvent-containing detergents can attack the surface to be cleaned; furthermore, the handling of such highly solvent-containing detergents requires great care on account of their potentially harmful potential.
  • the DE 198 22 441 A1 discloses a method for cleaning a printing surface according to the preamble of claim 1.
  • the DE 690 19 901 T2 discloses a system for cleaning a printing cylinder with a brush roller rotating at a speed of the order of 175 rpm.
  • the present invention has the object to provide a novel method for cleaning a printing surface. This object is achieved by a method for cleaning a printing surface according to claim 1.
  • the present invention proposes to use a liquid, water-based detergent which has at least 60% water and at least surfactants in the rest for cleaning a printing-technical, rotating surface within a printing unit.
  • a liquid, water-based detergent which has at least 60% water and at least surfactants in the rest for cleaning a printing-technical, rotating surface within a printing unit.
  • such a detergent does not attack the surface to be cleaned; furthermore, such a water-based detergent does not represent a health hazard and environmental compatibility.
  • the cleaning device is pressed at least when removing the impurities with a defined felicitnanpresskraft between 0.5 N / mm and 10 N / mm against the surface to be cleaned, namely such that when cleaning a transfer mold same in the region of their surface to be cleaned between 0 , 01 mm and 0,20 mm elastically deformed.
  • This is a particularly advantageous cleaning of the surface to be cleaned using a water-based detergent possible.
  • a transfer mold is cleaned by the method of the present invention, if the surface thereof is elastically deformed in the specified range, it can be cleaned particularly effectively using a water-based detergent.
  • the water-based detergent is before applying the detergent to the surface to be cleaned at a temperature between 30 ° C and 90 ° C, preferably at a temperature between 40 ° C and 80 ° C, more preferably at a temperature between 50 ° C and 70 ° C, heated. Then, when the water-based detergent is heated in this manner before application to the surface to be cleaned, particularly effective cleaning of the surface to be cleaned using a water-based detergent can be ensured.
  • a detergent is applied to the surface to be cleaned, which has at least 80% water and in the rest at least surfactants, wherein the same contains as surfactants exclusively non-ionic surfactants and / or anionic surfactants.
  • the use of a detergent containing at least 80% of water is particularly preferred in order to avoid endangering the surfaces to be cleaned and endangering the health of press personnel.
  • the invention relates to a method for cleaning a printing surface within a printing unit of a printing press.
  • the method is used to clean a rotating cylindrical surface of a printing press cylinder or a printing press roll or to clean a surface of a printing plate or transfer mold arranged on a cylinder surface in the area of a printing unit or within a printing unit between two print jobs or even during production the same print job.
  • the invention for cleaning a positioned on a transfer cylinder transfer mold which may be formed, for example, as a blanket, blanket plate or blanket sleeve, use.
  • Fig. 1 shows a section of a cleaning device 1.
  • the cleaning device 1 has a housing 30 in which a preferably designed as a cleaning brush 10 first cleaning device 10 or washing device and preferably further, a separate, not shown, second cleaning device or drying device is added. Such a separate drying device is preferred, but optional.
  • the cleaning device 10 can also be designed as a so-called not shown cloth system.
  • a so-called cloth system instead of a cleaning brush, a cloth or fleece is used, which is unwound from a cloth roll designed as a neurole, pressed against the surface 20 to be cleaned via a pressure bar or pressing bar and thus brought into contact therewith.
  • the soiled by the cleaning and / or drying process cloth section is here, for example, wound up again on a so-called dirt roll.
  • the cleaning cloth may also be used as a cover for a cleaning roller. It is unimportant whether the serving as a reference cleaning cloth has a closed shape and a body, which is preferably designed as a roller or whether the cleaning cloth has an open shape and is clamped on the Anpressance or Anpressbalken so that it is in contact with the To be cleaned surface 20 of a rotating body can withstand the friction forces occurring.
  • the cleaning device 1 comprises the washing device preferably designed as a cleaning brush 10 and further comprising a separate drying device, the same are preferably drivable starting from a common drive.
  • the cleaning device 1 comprises the washing device 10 formed as a cleaning device and further comprises a separate drying device, preferably only one of these devices is employed on the surface to be cleaned, in which case to ensure the alternate stopping or stopping of washing device and drying device to the cleaning surface, the housing 30, which receives these two devices, is pivotable about a pivot axis, not shown.
  • the cleaning device 1 is used to clean a rotating, printing-technical surface 20 in the region of a printing unit or within the printing unit of a printing press, preferably between two print jobs or during the production of a print job.
  • a liquid, water-based detergent 19 which is kept ready in a storage container 18, can be applied to the surface 20 to be cleaned.
  • the liquid, water-based detergent 19 is preferably applied to the surface 20 to be cleaned with the aid of the cleaning device 10 of the cleaning device 1, which is preferably designed as a cleaning brush 10.
  • the liquid, water-based detergent 19 is removed in an advantageous embodiment for this purpose from the reservoir 18 and sprayed by means of a spray device 11 on the cleaning brush 10, which then when rolling on the surface to be cleaned 20, the water-based detergent 19 to be cleaned, rotating surface 20 applies.
  • liquid, water-based detergent 19 can also be applied directly to the surface 20 to be cleaned, for example by direct spraying by means of the spraying device 11.
  • the water-based detergent thereby dissolves the contaminants by adhesion and cohesion effects of the surface 20 to be cleaned.
  • the cleaning brush 10 is preferably used the application of the liquid, water-based detergent 19, the removal of the impurities from the surface to be cleaned 20 and the partial or complete removal of the detached contaminants from the surface to be cleaned 20.
  • the drying device is then optionally still the removal of the remaining impurities of the to be cleaned Surface 20 and at least the drying of the same.
  • the cleaning brush 10 is the complete removal of the detached impurities and subsequent drying of the surface to be cleaned 20.
  • drying the surface to be cleaned 20 is no further detergent 19 on the cleaning brush 10 applied to the surface 20 to be cleaned.
  • the present invention it is within the meaning of the present invention to apply a liquid, water-based detergent 19 to the printing-technical, rotating surface 20 to be cleaned within the printing unit, wherein the water-based detergent 19 at least 60% water, preferably at least 80% water, and at least surfactants in the remainder.
  • the detergent 19 comprises exclusively nonionic surfactants and / or anionic surfactants.
  • a water-based detergent 19 which has at least 80% water, 10% to 19% surfactants and 1% to 10% solvent.
  • glycol ether for example, glycol ether or a polar ester oil can be used.
  • the pH of the detergent used is preferably between 7 and 13, preferably between 8 and 12, particularly preferably between 10 and 11.
  • a water-based detergent is used, which is marketed by the company Schwegmann under the product name "SCHWEGO aqua clean", in particular the detergent “SCHWEGO aqua clean CC 23".
  • the liquid detergent 19 is heated prior to application to the surface to be cleaned, namely before spraying the same over the spray device 11 on the cleaning brush 10 and / or before the direct spraying onto the surface to be cleaned, namely with the aid of Fig. 1
  • the heating means 19 is heated to a temperature between 30 ° C and 90 ° C, preferably to a temperature between 40 ° C and 80 ° C, more preferably at a temperature between 50 ° C and 70 ° C.
  • the spraying of the heated, liquid detergent 19 on the cleaning brush 10 by means of the spray 11 is carried out according to the invention with a pressure between 100 kPa (1 bar) and 500 kPa (5 bar).
  • the washing brush 10 When cleaning the surface to be cleaned 20, namely when applying the detergent 19 to the surface to be cleaned 20, when removing the impurities and the removal of impurities not only the surface to be cleaned 20 in the direction of arrow 21 is rotationally driven, but also beyond the washing brush 10 in the direction of the arrow 16.
  • the speed of the washing brush 10 is according to the invention between 100 U / min and 500 U / min.
  • the washing brush 10 leads in the direction of Seen longitudinal axis 15, preferably, but not necessarily, a traversing movement.
  • the cleaning brush 10 is a brush which has a base body 13 and a bristle trim 14 carried by the base body 13, wherein the bristles of the bristle trim 14 are preferably made of plastic and have a thickness between 0.10 mm and 0.20 mm , However, other bristles may be used.
  • the cleaning brush 10 When cleaning the surface to be cleaned 20, namely at least when removing the impurities from the surface 10 to be cleaned and preferably also when applying the liquid, water-based detergent and removing the detached impurities, the cleaning brush 10 with a defined line pressing force 12 against the to be cleaned Surface 20 is pressed, namely such that when cleaning a transfer mold the same elastically deformed in the range of their surface to be cleaned between 0.01 mm and 0.20 mm.
  • the cleaning brush 10 is pressed with aratinanpresskraft 12 between 0.5 N / mm and 10 N / mm against the surface to be cleaned 20 of the transfer mold.
  • the degree of elastic deformation of the transfer mold also depends on such a line contact force whether the transfer mold is a conventional blanket, a metal back blanket or a transfer sleeve.
  • a water-based detergent 19 By using a water-based detergent 19, surfaces to be cleaned 20, in particular a surface of a transfer mold to be cleaned, within a printing press, namely within a printing unit, can be cleaned effectively and gently.
  • the water-based detergent 19 is heated before being applied to the surface 20 to be cleaned, wherein the cleaning brush 10, the application of the detergent 19 to the surface 20 to be cleaned and the detachment and at least partially Removing impurities serves, is pressed with a defined line pressing force 12 against the surface 20 to be cleaned.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Cleaning In General (AREA)

Claims (10)

  1. Procédé de nettoyage d'une surface tournante d'un cylindre de machine d'impression ou d'une surface tournante d'un rouleau de machine d'impression ou d'une surface tournante d'un cliché d'impression ou d'un cliché de transfert disposé sur un cylindre de machine d'impression à l'intérieur d'un groupe d'impression, comportant les étapes suivantes :
    application d'un détergent liquide à base aqueuse (19) qui présente au moins 60 % d'eau et dans le reste au moins des agents tensioactifs sur la surface à nettoyer (20) à l'intérieur du groupe d'impression ;
    dissolution des impuretés de la surface à nettoyer (20) à l'intérieur du groupe d'impression à l'aide du détergent (19) et d'un dispositif de nettoyage (10) ;
    élimination des impuretés dissoutes de la surface à nettoyer (20) à l'intérieur du groupe d'impression à l'aide du dispositif de nettoyage (10) ;
    caractérisé en ce que
    le détergent liquide à base aqueuse (19) est appliqué sur la surface à nettoyer (20) à l'aide du dispositif de nettoyage (10) se présentant sous forme de brosse de nettoyage qui tourne à une vitesse de rotation de 100 rotations par minute à 500 rotations par minute et qui roule sur la surface à nettoyer, le détergent liquide à base aqueuse (19) étant pour ce faire pulvérisé à une pression de 100 kPa à 500 kPa sur la brosse de nettoyage servant à appliquer le détergent (19) et appliqué par la broche de nettoyage sur la surface à nettoyer (20) .
  2. Procédé selon la revendication 1, caractérisé en ce qu'un détergent (19) qui présente au moins 80 % d'eau et dans le reste au moins des agents tensioactifs est appliqué sur la surface à nettoyer (20) à l'intérieur du groupe d'impression.
  3. Procédé selon la revendication 2, caractérisé en ce qu'un détergent (19) qui présente au moins 80 % d'eau, 10 % à 19 % d'agents tensioactifs et 1 % à 10 % de solvant est appliqué sur la surface à nettoyer (20) à l'intérieur du groupe d'impression.
  4. Procédé selon une des revendications 1 à 3, caractérisé en ce qu'est appliqué, à l'intérieur du groupe d'impression, sur la surface à nettoyer (20), un détergent (19) qui présente en tant qu'agents tensioactifs exclusivement des agents tensioactifs non ioniques et/ou des agents tensioactifs anioniques.
  5. Procédé selon une des revendications 1 à 4, caractérisé en ce que le dispositif de nettoyage (10) se présentant sous forme d'une brosse de nettoyage exécute de plus un mouvement alternatif.
  6. Procédé selon une des revendications 1 à 5, caractérisé en ce que le dispositif de nettoyage (10), du moins lors de la dissolution des impuretés est comprimé avec une force de compression linéaire définie contre la surface à nettoyer (20), à savoir de manière à ce que, lors du nettoyage d'un cliché de transfert, celui-ci se déforme élastiquement au niveau de sa surface à nettoyer à raison d'une amplitude de 0,01 mm à 0,2 mm.
  7. Procédé selon la revendication 6, caractérisé en ce que, pour ce faire, le dispositif de nettoyage (10) appuie avec une force de compression linéaire (12) de 0,5 N/mm à 10 N/mm contre la surface à nettoyer (20) du moule de transfert.
  8. Procédé selon une des revendications 1 à 7, caractérisé en ce que le détergent (19) est chauffé à une température de 30 °C à 90 °C avant l'application du détergent sur la surface à nettoyer (20).
  9. Procédé selon la revendication 8, caractérisé en ce que le détergent (19) est chauffé à une température de 40 °C à 80 °C.
  10. Procédé selon la revendication 9, caractérisé en ce que le détergent (19) est chauffé à une température de 50 °C à 70 °C.
EP15182180.8A 2014-09-12 2015-08-24 Procédé de nettoyage d'une surface rotative d'impression sous forme d'un cylindre Active EP2995456B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014113217.3A DE102014113217A1 (de) 2014-09-12 2014-09-12 Verfahren zum Reinigen einer drucktechnischen Oberfläche

Publications (2)

Publication Number Publication Date
EP2995456A1 EP2995456A1 (fr) 2016-03-16
EP2995456B1 true EP2995456B1 (fr) 2019-12-04

Family

ID=54010901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15182180.8A Active EP2995456B1 (fr) 2014-09-12 2015-08-24 Procédé de nettoyage d'une surface rotative d'impression sous forme d'un cylindre

Country Status (3)

Country Link
US (1) US9656457B2 (fr)
EP (1) EP2995456B1 (fr)
DE (1) DE102014113217A1 (fr)

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CN105798001A (zh) * 2016-05-10 2016-07-27 无为县宏喜体育用品有限公司 一种羽毛洗刷用的装置
US10589515B2 (en) * 2016-08-23 2020-03-17 Palo Alto Research Center Incorporated Cleaning system architecture with recirculating bath for variable data lithographic printing
CN106824897B (zh) * 2017-01-10 2019-03-15 南安市智德机械设备有限公司 一种机械工厂用的小型机械加工工具清洗设备
DE202020004443U1 (de) 2020-10-22 2020-11-04 Dorothea Becker Reinigungsvorrichtung für eine Druckmaschine zum Entfernen einer wasserbasierten Druckfarbe mit Hilfe eines wasserbasierten Reinigungsmittels, Aufbringeinrichtung, Bürstenwalze und Abführeinrichtung einer solchen Reinigungsvorrichtung und Druckwerk

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Also Published As

Publication number Publication date
US20160075129A1 (en) 2016-03-17
EP2995456A1 (fr) 2016-03-16
DE102014113217A1 (de) 2016-03-17
US9656457B2 (en) 2017-05-23

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