EP2161231A2 - Presse rotative d'impression pour feuilles - Google Patents

Presse rotative d'impression pour feuilles Download PDF

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Publication number
EP2161231A2
EP2161231A2 EP09167900A EP09167900A EP2161231A2 EP 2161231 A2 EP2161231 A2 EP 2161231A2 EP 09167900 A EP09167900 A EP 09167900A EP 09167900 A EP09167900 A EP 09167900A EP 2161231 A2 EP2161231 A2 EP 2161231A2
Authority
EP
European Patent Office
Prior art keywords
printing
sheet
drying
machine
fed
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.)
Withdrawn
Application number
EP09167900A
Other languages
German (de)
English (en)
Inventor
Karlheinz Mohn
Thomas Walther
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 AG
Original Assignee
Manroland 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 Manroland AG filed Critical Manroland AG
Publication of EP2161231A2 publication Critical patent/EP2161231A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044—Drying sheets, e.g. between two printing stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/585—Article switches or diverters taking samples from the main stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
    • B65H2301/542—Quality control
    • B65H2301/5421—Quality control taking samples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/805—Humidity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard

Definitions

  • the invention relates to a sheet-fed rotary printing press with a device for testing the degree of cure of printing inks or lacquer layers printed in one of the mass-printing offset, flexo or gravure printing processes.
  • the examination of the printed lacquer and / or ink layers is carried out by a sheet is discharged from the flow of the sheet-fed rotary printing press and fed to a suitable test device.
  • the curing of printing ink and lacquer layers can be done once by evaporation of solvents, by the removal of solvents in the substrate, by oxidation, by polymerization in UV or electron beam dryer or by combination of the listed drying mechanisms.
  • conventional printing inks are either oil-based or solvent-based.
  • Oil-based inks dry by oxidation of the oil-based binders or dry by evaporation of the volatile oils in the ink (heat-set).
  • radiation-curing printing inks and coatings cure by a photochemical process, which is also referred to as crosslinking.
  • the liquid or uncrosslinked ink film is converted by the polymerization under the action of UV light in a solid state.
  • ink constituents can migrate through the substrate.
  • a migration of printing ink constituents or a print-off of printing inks can lead to a sensory influence on the contents during packaging. If specific migration limits are exceeded, it can not be ruled out that the consumer will be harmed in the case of food packaging. If the specific migration limits are exceeded, packaging must definitely be withdrawn from circulation, which, in addition to the financial consequences, usually results in a loss of the reputation of the brand manufacturer in the market. The preservation of health safety is paramount.
  • Incompletely cured radiation-curing printing inks and coatings also have an effect on the safety of the operating personnel. Are such ink or varnish layers on the substrate insufficient cured and the operator pulls, z.
  • Ink or varnish layers on the substrate insufficient cured and the operator pulls, z.
  • specimens so migratory components of the inks can be absorbed through the skin.
  • health hazards may cause irritation and allergic reactions of the skin.
  • the printing operation caused by incomplete cured paints and printing in addition disposal costs, as sheets with uncrosslinked printing ink or paint components are usually treated as hazardous waste. This requires a logistical overhead and usually generates additional costs for disposal.
  • the DE 197 37 785 A1 suggests determining the degree of dryness of a lacquer layer by measuring the intensity of a microwave signal that interacts with the lacquered substrate. The state variable formed from the measurement signal can then be used as a controlled variable for the dryer control.
  • the method is only suitable for the use of coating media which absorb the microwave energy to a high degree, for example a dispersion varnish which essentially comprises water as solvent. The examination of the polymerization of cured printing ink and varnish layers was not mentioned in the patent.
  • the DE 24 58 935 A1 discloses a measurement and control method of the speed of printing and coating machines, in which the wavelengths corresponding to the solvents used are continuously analyzed on the paper web, the average values measured after drying being compared with the preset maximum values.
  • the measuring device contains an analyzer head with continuous radiation and a receiver for receiving the radiation, which reflects the product to be analyzed or passes through them.
  • the disadvantage of this method is that from the outset the solvent composition must be known. This is relatively simple in printing processes using simple solvent compositions, and the complexity is increasing in modern inks with a variety of solvents. As a rule, the supplier only announces the composition of the printing ink in coarse components. In addition, this method fails in printing processes that do not emit solvents. These include the radiation-curing printing process, as well as the oxidative and weghat printing process. This measurement method is not universally applicable. Also, no application in high-speed printing machines is known because the analysis is time consuming and complex.
  • infrared spectroscopy or Raman spectroscopy are used to evaluate the polymerization. Due to their complexity and sample preparation, these methods are hardly suitable for use in the harsh machine environment of a printing company, but are applicable in principle.
  • the DE 10 2006 042 795 A1 discloses a method for determining the degree of cure and drying by means of a sliding friction measurement on the surface of the paint and ink layers on a printing sheet.
  • a test device for checking the degree of drying of printed products which comprises a pressure element that is pressed by a pressure generating assembly on a printed product covered with a test paper. The degree of drying is evaluated on the basis of the color deposits on the test paper.
  • the drying process continues after the direct action of the dryer.
  • the evaporation of solvent or the displacement of solvents in the printing material continues even after leaving the dryer area of action.
  • Even with radiation-curing systems for example UV
  • a dark reaction also post-curing, can be observed after leaving the effective range of the radiator.
  • An in-line measurement during operation therefore only provides a snapshot of the current state of the paint and ink layers. Whether these layers harden later, for example by post-curing, can only be extrapolated.
  • the DE 536 456 A discloses a sheet loading device for high-speed machines, in which the printed Paper web is cut into sheets by a sheeter, which are fed alternately by means of a sheet switch several leading to separate stacks Forderbahnen, namely according to the invention the Forderbahnen the alternately fed them, individual sheets in a conventional manner with slowed speed to the Ablegestapeln, and indeed so that when using two or x Forderbahnen these or their associated, the stack initially arranged depositing tracks are driven at about half or x-tel speed of the paper-processing machine. Further, this application discloses that printed sheets in printing machines alternately place on two different stacks to extend the drying time and to prevent smearing and blurring of the ink.
  • a special design of a sheet diverter in which the delivery flow can be divided into two conveyor lines to support the sheet guide, wherein alternately the sheets are deposited on different Auslegestapel is in the DE 197 23 146 C2 to find.
  • Another delivery device with curved switch is off DE 198 19 490 C1 and DE 198 19 491 C1 known.
  • This delivery device has an endless circulating conveyor system for feeding and depositing sheets on a first delivery stack (Master batches).
  • the conveyor system is assigned to a soft acting, at least one gripper bar having drum so that certain sheets on a second, arranged below this drum delivery stack can be stored by means of the drum.
  • the second delivery stack is preferably designed as a stacking system with a pallet or can be designed as a lattice box, for example for receiving spoiled sheets.
  • the second delivery stack can also be embodied as a stacking system with stop means and straight bumpers for the exact stacking edge formation.
  • Sheet diverter for separating the flow rate of a sheet-fed press in at least two conveyor lines are sufficiently known from the patent literature. However, the application of such a sheet diverter for supplying individual sheets or sheet stack to a quality measuring device is not mentioned in this context.
  • the aim of the invention is to determine the curing or drying of paint and ink layers on paper, film, or cardboard substrates by passing from the flow of the sheet-fed rotary printing machine via a curved switch Bends are discharged from this and fed to a suitable quality inspection device.
  • Post - curing may also be taken into account in the examination of the degree of cure and drying, by a fixed time interval or by a test specification, the other parameters such as machine speed, exposure time, and between the feeding of the sheet and the actual measurement with the tester Intensity of the drying action taken into account, determined time interval passes. This makes more accurate statements about the state of the final product possible.
  • the sheets can be fed to the tester in fixed run lengths, time intervals or event driven.
  • Event-controlled may mean, for example, that after each change in the dryer setting, the machine speed or other parameters influencing the drying or curing quality, one or more sheets are discharged and the curing or drying quality is determined.
  • a communication between the printing press, drying unit and the control device for the curved switch and the tester must exist.
  • the data on the curing and drying levels of the ink and varnish layers obtained from the measurement can be evaluated and evaluated as absolute measured values, in comparison to values stored in data storages of an expert system or a reference value table or in comparison to a sample with defined curing properties.
  • the hardening or drying of the printing ink and varnish layers is preferably combined in a characteristic number which allows the machine operator to intervene without interpreting the curve curves in order to adapt machine parameters such as dryer temperature, radiation power, machine speed etc. to the process requirements.
  • the adaptation can also be automated if the results of the curing and drying measurement are taken directly from the machine control and appropriate measures are derived there. In the simplest case, the operator receives setting suggestions. In the more complex case, corrective measures are initiated directly via characteristics, calculation rules or knowledge stored in an expert system. In the case of insufficient curing or drying, these can be measures for improving them. With sufficient drying, a reduction of the dryer performance can be provided to save energy.
  • the approach to determine the degree of curing or drying by the discharge of the sheet to be tested via a sheet diverter and the subsequent supply to a tester allows a cure control, which can be used in rough printing environments. It takes place inline, ie during production in the printing press. With this approach, it is also possible for the first time with a bearable effort to obtain a production protocol with statistics or curves or key figures that allows the printer to demonstrate sufficient drying or curing and thus product safety to his end customer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP09167900A 2008-09-05 2009-08-14 Presse rotative d'impression pour feuilles Withdrawn EP2161231A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008041826 2008-09-05
DE102009027009A DE102009027009A1 (de) 2008-09-05 2009-06-18 Bogenrotationsdruckmaschine

Publications (1)

Publication Number Publication Date
EP2161231A2 true EP2161231A2 (fr) 2010-03-10

Family

ID=41650922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09167900A Withdrawn EP2161231A2 (fr) 2008-09-05 2009-08-14 Presse rotative d'impression pour feuilles

Country Status (2)

Country Link
EP (1) EP2161231A2 (fr)
DE (1) DE102009027009A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524807A1 (fr) * 2011-05-18 2012-11-21 manroland sheetfed GmbH Procédé de sortie de matériau en feuilles dans une machine de traitement de feuilles et dispositif de sortie
EP3984749A1 (fr) * 2020-10-15 2022-04-20 Heidelberger Druckmaschinen AG Procédé de réalisation de produits imprimés

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536456C (de) 1930-05-04 1931-10-23 Will E C H Fa Bogenablegevorrichtung
DE2458935A1 (de) 1973-12-13 1975-06-26 Holweg Const Mec Verfahren und vorrichtung zum messen und regeln der geschwindigkeit von druckund auftragsmaschinen
DE19540699A1 (de) 1995-11-02 1997-05-07 Saechsisches Inst Fuer Die Dru Prüfeinrichtung zur Prüfung des Trocknungsgrades von Druckprodukten
DE19737785A1 (de) 1997-08-29 1999-03-04 Heidelberger Druckmasch Ag Rotationsdruckmaschine mit einem Lackierwerk sowie einem dem Lackierwerk nachgeordneten Trockner
DE19819491C1 (de) 1998-04-30 1999-09-16 Roland Man Druckmasch Auslegevorrichtung an einer Bogenrotationsdruckmaschine
DE19819490C1 (de) 1998-04-30 1999-10-28 Roland Man Druckmasch Ausleger für eine Bogenrotationsdruckmaschine
DE19723146C2 (de) 1997-06-03 1999-11-18 Koenig & Bauer Ag Bogenweiche zur Unterstützung der Bogenführung
EP1142711B1 (fr) 2000-04-07 2006-02-22 MAN Roland Druckmaschinen AG Machine d' impression avec une commande pour un système de séchage
DE102006052367B3 (de) 2006-11-07 2008-02-07 Man Roland Druckmaschinen Ag Auslegevorrichtung an einer Verarbeitungsmaschine für Bogenmaterial
DE102006042795A1 (de) 2006-09-08 2008-03-27 SID Sächsisches Institut für die Druckindustrie GmbH Institut des Vereins POLYGRAPH Leipzig e.V. Verfahren und Vorrichtung zur Bestimmung des Aushärtungsgrades von Farb- oder Lackschichten auf Druckprodukten

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536456C (de) 1930-05-04 1931-10-23 Will E C H Fa Bogenablegevorrichtung
DE2458935A1 (de) 1973-12-13 1975-06-26 Holweg Const Mec Verfahren und vorrichtung zum messen und regeln der geschwindigkeit von druckund auftragsmaschinen
DE19540699A1 (de) 1995-11-02 1997-05-07 Saechsisches Inst Fuer Die Dru Prüfeinrichtung zur Prüfung des Trocknungsgrades von Druckprodukten
DE19723146C2 (de) 1997-06-03 1999-11-18 Koenig & Bauer Ag Bogenweiche zur Unterstützung der Bogenführung
DE19737785A1 (de) 1997-08-29 1999-03-04 Heidelberger Druckmasch Ag Rotationsdruckmaschine mit einem Lackierwerk sowie einem dem Lackierwerk nachgeordneten Trockner
DE19819491C1 (de) 1998-04-30 1999-09-16 Roland Man Druckmasch Auslegevorrichtung an einer Bogenrotationsdruckmaschine
DE19819490C1 (de) 1998-04-30 1999-10-28 Roland Man Druckmasch Ausleger für eine Bogenrotationsdruckmaschine
EP1142711B1 (fr) 2000-04-07 2006-02-22 MAN Roland Druckmaschinen AG Machine d' impression avec une commande pour un système de séchage
DE102006042795A1 (de) 2006-09-08 2008-03-27 SID Sächsisches Institut für die Druckindustrie GmbH Institut des Vereins POLYGRAPH Leipzig e.V. Verfahren und Vorrichtung zur Bestimmung des Aushärtungsgrades von Farb- oder Lackschichten auf Druckprodukten
DE102006052367B3 (de) 2006-11-07 2008-02-07 Man Roland Druckmaschinen Ag Auslegevorrichtung an einer Verarbeitungsmaschine für Bogenmaterial

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524807A1 (fr) * 2011-05-18 2012-11-21 manroland sheetfed GmbH Procédé de sortie de matériau en feuilles dans une machine de traitement de feuilles et dispositif de sortie
EP3984749A1 (fr) * 2020-10-15 2022-04-20 Heidelberger Druckmaschinen AG Procédé de réalisation de produits imprimés

Also Published As

Publication number Publication date
DE102009027009A1 (de) 2010-03-11

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