EP0887204B1 - Procédé de nettoyage de plaques d'impression - Google Patents

Procédé de nettoyage de plaques d'impression Download PDF

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Publication number
EP0887204B1
EP0887204B1 EP98109903A EP98109903A EP0887204B1 EP 0887204 B1 EP0887204 B1 EP 0887204B1 EP 98109903 A EP98109903 A EP 98109903A EP 98109903 A EP98109903 A EP 98109903A EP 0887204 B1 EP0887204 B1 EP 0887204B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
cleaning fluid
concentrate
percent
several
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
EP98109903A
Other languages
German (de)
English (en)
Other versions
EP0887204A3 (fr
EP0887204A2 (fr
Inventor
Dieter Schmitt
Reiner Schmitt
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0887204A2 publication Critical patent/EP0887204A2/fr
Publication of EP0887204A3 publication Critical patent/EP0887204A3/fr
Application granted granted Critical
Publication of EP0887204B1 publication Critical patent/EP0887204B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/06—Preparing for use and conserving printing surfaces by use of detergents
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C11D3/323—Amides; Substituted amides urea or derivatives thereof
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • C11D1/523—Carboxylic alkylolamides, or dialkylolamides, or hydroxycarboxylic amides (R1-CO-NR2R3), where R1, R2 or R3 contain one hydroxy group per alkyl group
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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 illustrated Printing forms of imaging residues according to the preamble of claim 1.
  • the plate imaging, e.g. B. directly in the printing press without a conventional one Disk copy is done using a computer, which data for in a grid Image processor to generate bitmap files from electronic publishing systems takes over and sends a bitmap to the printing units for each printing ink.
  • There each of the print heads depicts specially coated printing forms Printing form cylinders.
  • the printing forms can have a three-layer structure have, e.g. with a carrier layer based on polyester, one on the Backing layer applied printing layer based on titanium, which can have infrared absorbing properties, and one on the printing Non-printing layer based on silicone, e.g. Silicone rubber.
  • Such printing forms can be used in offset printing without dampening solution Dry offset - can be used.
  • the printing forms can be used as printing plates or - Films are clamped onto the printing form cylinder or in some other way these are applied.
  • the application of a liquid layer on the Printing form surface with subsequent hardening of the layer is possible.
  • the ablative imaging can be done using a print head, e.g. by sparks generated by electrodes or by sparks generated by laser diodes Laser beams on the printing form the color-guiding layer is exposed, the non-printing cover layer at the printing points, the pixels, thermally is decomposed or evaporated. As residues of this imaging process there remain particles and conversion products of the non-printing and also the possibly slightly attacked printing layer on the printing Areas of the printing form.
  • imaging residues must be removed so that good color acceptance at these points and no toning occurs and on High quality print image is achieved.
  • the removal of the imaging residues can be done manually and / or mechanically by means of a cleaning device, by using a cleaning organ, e.g. a cleaning cloth under well-dosed pressure the printing form surface a - e.g. by rotating the plate cylinder rack-fixed cleaning organ - relative movement to the cleaned Printing form surface executes.
  • the printing plate cleaning fluid can before and during the cleaning process towards the cleaning member and / or the cleaning printing surface applied, e.g. are sprayed.
  • Cleaning fluids containing isopropanol can be used for cleaning printing forms with a printing layer based on titanium and a non-printing layer based on silicone containing alcohol.
  • Such Cleaning fluids are also used in printing machines for cleaning rollers and Cylinders of paint residues and other contaminants used.
  • the low flash point of the isopropanol contained that at the Printing form cleaning evaporating isopropanol can together with the Ambient air form a flammable gas mixture and with one of the Printing plate cleaning immediately following another imaging process the high temperatures caused by these are ignited.
  • the invention has for its object to provide a method with which thorough cleaning of a printing form of imaging residues can be achieved, and to propose a cleaning fluid for use in printing plate cleaning, by which the disadvantages of the above-mentioned prior art are avoided become.
  • a cleaning organ a defined contact pressure on the to be cleaned Printing form surface exerts a relative movement between printing form and Cleaning organ takes place and a cleaning fluid on the to be cleaned Printing form surface is applied and using a cleaning fluid which contains a cleaning concentrate in addition to water as a component, the 1st up to 30% by mass, preferably 20 to 30% by mass, of an anionic surfactant and 1 to 30% by mass, preferably 20 to 30% by mass, of a nonionic Contains surfactants.
  • an anionic surfactant alkylbenzenesulfonate and nonionic surfactant, alcohol ethoxylate can be used.
  • the Cleaning concentrate can contain 0.1 to 5 percent by weight of regreasing components contain. Fatty acid diethanolamides or Carbonic acid amide can be used.
  • the cleaning concentrate can be 1 to 25 Mass percent solubilizers, preservatives, e.g. B 0.05 to 3 Mass percent preservative, a disinfectant Sodium silver chloride complex base, complexing agents, e.g. B. 0.1 to 2 Mass percent hardness stabilizers included.
  • that Cleaning concentrate contain water.
  • the cleaning fluid 1 up to 25 percent by volume of cleaning concentrate.
  • can Cleaning fluid contain 1 to 2.5 percent by volume of cleaning concentrate.
  • the negative decimal logarithm of the Hydrogen ion concentration of the cleaning fluid has a value between 5 and 8 exhibit.
  • Suitable cleaning organs can be Wipes - especially wipeable towels - or tapes, rollers, brushes, Brush rollers and pressure elements with fabric, plush and fleece-like or different surface structure with suction and / or cleaning action use.
  • the cleaning member can preferably be rotated with a printing plate cylinder much slower speed than the machine speed - in so-called creeper - take place. An additional traversing movement of the Cleaning device in the direction of the plate cylinder axis is possible. There can be several Cleaning cycles, e.g.
  • the method according to the invention can be used both for the cleaning of images Offset printing form of the conventional offset process using a Fountain solution and for cleaning dry offset printing plates for the waterless Offset printing as well as for cleaning illustrated printing forms of the direct Flat printing (Dilitho) as well as for cleaning in the computer to press or Use the computer-to-plate process to print images directly illustrated, if the have a non-printing layer based on silicone.
  • Fig. 1 is the construction of an imageable printing form, consisting of a stable Carrier layer 1 based on polyester, e.g. 0.18 mm thick, a printing Layer 2 based on titanium and a non-printing layer 3 based on silicone, by e.g. 2-3 ⁇ m thickness, shown, on the bottom of the pixel 4, e.g. 35 ⁇ m diameter, there are imaging residues 5, 6 to be removed.
  • a stable Carrier layer 1 based on polyester e.g. 0.18 mm thick
  • a printing Layer 2 based on titanium
  • a non-printing layer 3 based on silicone, by e.g. 2-3 ⁇ m thickness, shown, on the bottom of the pixel 4, e.g. 35 ⁇ m diameter, there are imaging residues 5, 6 to be removed.
  • Fig. 2 an advantageously designed cleaning member 7, 8 is shown, the further cleaning cloth 8 by an elastic pressure element 7 against the Surface of the printing form 9 which is clamped on the printing form cylinder 10 can, can be employed.
  • the contact pressure can be a pressurizable element 11, e.g. a pressurizable air Profile hose element, defined.
  • printing form 9 can be fed directly onto the printing form 9, such as shown, or on an application and / or cleaning roller, e.g. a brush roller, is sprayed on or by using a pressure element, in particular one with Capillary effect of the material, and a cleanable cleaning cloth on the Printing form 9 is applied.
  • the printing form cylinder 10 leads in the crawl gear Printing machine rotary movements of both directions of rotation driven by the drive of the printing press. This way both Imaging residues 5 behind the leading edges of the printing Pixel as well as the imaging residues 6 at the angle of the trailing Edges safely removed by the cleaning element (see Figure 1).
  • the Pressing element 7 and the cleaning cloth 8 can during the cleaning process Carry out an oscillating movement in the direction of the printing cylinder axis.
  • the cleaning fluid can have the following composition, for example: Cleaning concentrate 2.5 volume percent water 97.5 volume percent
  • the cleaning concentrate can also contain preservatives and Contain complexing agents, which depend on the mass of the Cleaning concentrate related percentages of these components can preferably be less than 1%.
  • the resulting mass difference between the sum of the above proportions and 100% can consist of water.
  • the pH value of the cleaning concentrate can be 7.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Detergent Compositions (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Claims (32)

  1. Procédé pour nettoyer une forme d'impression portant une image, comprenant une couche non imprimante à base de silicone, dans lequel un organe de nettoyage exerce une pression d'application définie sur la surface de la forme d'impression à nettoyer, il se produit un mouvement relatif entre la forme d'impression et l'organe de nettoyage et un fluide de nettoyage est déposé sur la surface de la forme d'impression à nettoyer,
       caractérisé en ce que
       le fluide de nettoyage contient, en plus de l'eau, comme partie constitutive, un concentré de nettoyage qui contient 1 à 30 pourcent en masse d'un tensio-actif anionique et 1 à 30 pourcent en masse d'un tensio-actif non ionique.
  2. Procédé selon la revendication 1,
       caractérisé en ce que
       le concentré de nettoyage contient, comme tensio-actif anionique, un sulfonate d'alkylbenzène.
  3. Procédé selon une des revendications précédentes,
       caractérisé en ce que
       le concentré de nettoyage contient, comme tensio-actif non ionique, un éthoxylate d'alcool.
  4. Procédé selon une ou plusieurs des revendications précédentes,
       caractérisé en ce que
       le concentré de nettoyage contient 0,1 à 5 pourcent en masse de composant de regraissage.
  5. Procédé selon la revendication 4,
       caractérisé en ce que
       le concentré de nettoyage contient, comme composant de regraissage, une amide d'acide carbonique (urée).
  6. Procédé selon la revendication 4 ou la revendication 5,
       caractérisé en ce que
       le concentré de nettoyage contient, comme composant de regraissage, une diéthanolamide d'acide gras.
  7. Procédé selon une des revendications précédentes,
       caractérisé en ce que
       le concentré de nettoyage contient 1 à 25 pourcent en masse d'agent de solubilisation.
  8. Procédé selon une ou plusieurs des revendications précédentes,
       caractérisé en ce que
       le concentré de nettoyage contient un agent de conservation.
  9. Procédé selon la revendication 8,
       caractérisé en ce que
       le concentré de nettoyage contient 0,05 à 3 pourcent en masse d'agent de conservation.
  10. Procédé selon une ou plusieurs des revendications précédentes,
    caractérisé en ce que
       le fluide de nettoyage contient un agent désinfectant à base d'un complexe de chlorure de sodium-argent.
  11. Procédé selon une ou plusieurs des revendications précédentes,
       caractérisé en ce que
       le concentré de nettoyage contient un agent complexant.
  12. Procédé selon la revendication 11,
       caractérisé en ce que
       le concentré de nettoyage contient 0,1 à 2 pourcent en masse de stabilisants de dureté.
  13. Procédé selon une ou plusieurs des revendications précédentes,
       caractérisé en ce que
       le fluide de nettoyage contient 1 à 25 pourcent en volume de concentré de nettoyage.
  14. Procédé selon la revendication 13,
       caractérisé en ce que
       le fluide de nettoyage contient 1 à 2,5 pourcent en volume de concentré de nettoyage.
  15. Procédé selon une ou plusieurs des revendications précédentes,
       caractérisé en ce que
       le fluide de nettoyage présente un logarithme vulgaire négatif de la concentration d'ions hydrogène d'une valeur d'entre 5 et 8.
  16. Utilisation d'un fluide de nettoyage qui contient, en plus de l'eau, comme partie constitutive, un concentré de nettoyage qui contient 1 à 30 pourcent en masse d'un tensioactif anionique et 1 à 30 pourcent en masse d'un tensio-actif non ionique, pour le nettoyage d'une forme d'impression portant une image qui comporte une couche non imprimante à base de silicone.
  17. Utilisation du fluide de nettoyage selon la revendication 16, dans laquelle
       le concentré de nettoyage contient, comme tensio-actif anionique, un sulfonate d'alkylbenzène.
  18. Utilisation du fluide de nettoyage selon une des revendications précédentes 16 ou 17, dans laquelle
       le concentré de nettoyage contient, comme tensio-actif non ionique, un éthoxylate d'alcool.
  19. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 18, dans laquelle
       le concentré de nettoyage contient 0,1 à 5 pourcent en masse de composant de regraissage.
  20. Utilisation du fluide de nettoyage selon la revendication 19, dans laquelle
       le concentré de nettoyage contient, comme composant de regraissage, une diéthanolamide d'acide gras.
  21. Utilisation du fluide de nettoyage selon la revendication 19 ou 20, dans laquelle
       le concentré de nettoyage contient, comme composant de regraissage, une amide d'acide carbonique (urée).
  22. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications 16 à 21, dans laquelle
       le concentré de nettoyage contient 1 à 25 pourcent en masse d'agent de solubilisation.
  23. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 22, dans laquelle
       le concentré de nettoyage contient un agent de conservation
  24. Utilisation du fluide de nettoyage selon la revendication 23, dans laquelle
       le concentré de nettoyage contient 0,05 à 3 pourcent en masse d'agent de conservation.
  25. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 24, dans laquelle
       le fluide de nettoyage contient un agent désinfectant à base d'un complexe de chlorure de sodium-argent.
  26. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 25, dans laquelle
       le concentré de nettoyage contient un agent complexant.
  27. Utilisation du fluide de nettoyage selon la revendication 26, dans laquelle
       le concentré de nettoyage contient 0,1 à 2 pourcent en masse de stabilisants de dureté.
  28. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications 16 à 27, dans laquelle
       le fluide de nettoyage contient 1 à 25 pourcent en volume de concentré de nettoyage.
  29. Utilisation du fluide de nettoyage selon la revendication 28, dans laquelle
       le fluide de nettoyage contient 1 à 2,5 pourcent en volume de concentré de nettoyage.
  30. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 29, dans laquelle
       le fluide de nettoyage présente un logarithme vulgaire négatif de la concentration d'ions hydrogène d'une valeur d'entre 5 et 8.
  31. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 30, dans laquelle
       la forme d'impression présente une couche non imprimante composée d'un caoutchouc de silicone.
  32. Utilisation du fluide de nettoyage selon une ou plusieurs des revendications précédentes 16 à 31, dans laquelle
       la forme d'impression présente une couche imprimante à base de titane.
EP98109903A 1997-06-24 1998-05-29 Procédé de nettoyage de plaques d'impression Expired - Lifetime EP0887204B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19726700 1997-06-24
DE19726700 1997-06-24

Publications (3)

Publication Number Publication Date
EP0887204A2 EP0887204A2 (fr) 1998-12-30
EP0887204A3 EP0887204A3 (fr) 1999-03-24
EP0887204B1 true EP0887204B1 (fr) 2001-04-04

Family

ID=7833438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109903A Expired - Lifetime EP0887204B1 (fr) 1997-06-24 1998-05-29 Procédé de nettoyage de plaques d'impression

Country Status (5)

Country Link
US (1) US6432211B1 (fr)
EP (1) EP0887204B1 (fr)
JP (1) JPH1111037A (fr)
DE (2) DE19822441A1 (fr)
IL (1) IL125093A (fr)

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Also Published As

Publication number Publication date
EP0887204A3 (fr) 1999-03-24
IL125093A (en) 2001-01-28
IL125093A0 (en) 1999-01-26
EP0887204A2 (fr) 1998-12-30
JPH1111037A (ja) 1999-01-19
US6432211B1 (en) 2002-08-13
DE19822441A1 (de) 1999-01-28
DE59800586D1 (de) 2001-05-10

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