EP0699529B1 - Procédé et dispositif pour imprimer une bande - Google Patents

Procédé et dispositif pour imprimer une bande Download PDF

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Publication number
EP0699529B1
EP0699529B1 EP95112820A EP95112820A EP0699529B1 EP 0699529 B1 EP0699529 B1 EP 0699529B1 EP 95112820 A EP95112820 A EP 95112820A EP 95112820 A EP95112820 A EP 95112820A EP 0699529 B1 EP0699529 B1 EP 0699529B1
Authority
EP
European Patent Office
Prior art keywords
material web
section
web
steam
cooling
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
EP95112820A
Other languages
German (de)
English (en)
Other versions
EP0699529A1 (fr
Inventor
Stefan Winheim
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.)
VIB Apparatebau GmbH
Original Assignee
VIB Apparatebau 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 VIB Apparatebau GmbH filed Critical VIB Apparatebau GmbH
Publication of EP0699529A1 publication Critical patent/EP0699529A1/fr
Application granted granted Critical
Publication of EP0699529B1 publication Critical patent/EP0699529B1/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
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening
    • 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
    • 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
    • B41F23/0476—Cooling
    • B41F23/0479—Cooling using chill rolls

Definitions

  • the invention relates to a method for printing on Material web, in particular a paper web, in which one color is applied to the material web, the material web then dried using heat and then cooled. Furthermore concerns the invention an apparatus for printing a web of material with a printing unit, a dryer section and a cooling section.
  • the printing ink When printing on a web of material, the printing ink in the vast majority of cases in liquid form applied. At the high throughput speeds used today the color is usually still not dried enough if the paper web is Leaves printing unit. To get straight to printing to be able to connect postprocessing, for example a cutting, folding, folding and Stapling the printed web, the web is replaced by a Dryer section performed using Heat the inks to be dried. When warm but the printing inks have a certain stickiness on when folding printed sheets is disadvantageous because the leaves are then together cling to. For this reason, the web of material becomes cooled to dry.
  • EP-A-0 627 311 shows a web cooling device in which a printed Material web passes through a dryer. After leaving the dryer will be on both sides of the Apply a sheet of liquid. By evaporation the web is cooled by the liquid. The liquid application takes place with the help of liquid application rollers. After the liquid application, there is a further cooling by a cooling roll.
  • DE-A-32 07 463 describes a method and an apparatus for drying and subsequent cooling of Goods webs, in particular those made after the Offset printing processes are printed.
  • the web is then cooled using chill rolls.
  • On the The web side that is cooled down first becomes a Water film applied before this web page that is cooled a second time.
  • the water film can either by spraying the web or the first cooling roller with water or by steaming the first cooling roller with steam, which is then on the chill roll can condense.
  • CH-A-467 159 shows a method and an apparatus to treat a paper web in which the paper web passes through a heating device after printing, in the ink is dried. Then it goes through the paper web is a group of water-cooled and continuously driven cooling rollers for cooling the warmed web. There is one on the last chill roll Damping unit with several one above the other Rollers are provided that are constantly with a zone of the chill roll surface is engaged on the paper web is not present. She carries one on this chill roll contiguous film of water so that the cooling roller is moistened before it comes into contact with the material web is coming.
  • the invention is based on the problem of manageability to improve the material web after printing.
  • This task is initiated in a procedure mentioned type solved in that the material web after cooling and before further processing under simultaneous Apply moisturized heat and then is cooled again.
  • the material web to humidify with steam which on the Material web is condensed.
  • the application of steam has the advantage that none Droplets are created that become markings, i.e. one Unrest or ripple on the surface.
  • a condensate layer forms on the paper web rather, an even film is created which Correspondingly evenly without formation of markings moistened.
  • the amount of steam supplied is so limits that the steam drip-free on the web condensed. Even if these drops because of the lack of limitation has no negative impact have the material web, so it is prevented that the drops detach from the material web and fall down. With such a loosening, the liquid layer uneven on the surface of the material web, what should be avoided in principle.
  • the steam is applied to the material web from below introduced. This increases the efficiency. Of the hot steam always has that over the colder air Strive to ascend. With the introduction the steam from below, this effect is advantageous with exploited.
  • the cooling preferably takes place immediately after steaming. This ensures that only the Surface with a higher temperature, namely the Temperature of about 100 ° C is applied.
  • the advance the heat inside the paper web is in usually through the inks or a previously applied one Dash more difficult. Of course that will advance not completely prevent the heat. It needs just a certain amount of time. If the cooling now after steaming takes place, the heat is on the surface dissipated again before going inside can penetrate the material web and change there the structure leads.
  • the humidification is advantageously carried out before Roll the web of material with its moistened side at least partially wraps around. In this way it is created between the material web and the roller Gusset in which the moisture of the surface the film formed into the material web is pressed into it.
  • the wrap angle can be here be relatively small. You just have to apply a certain amount of pressure ensure the material web to the roller. If necessary, this can also be done by a pressure roller take place when the wrap angle approaches zero.
  • the material web is preferably made up of two in succession Sides moistened.
  • the two sides experience this same treatment. By successively moistening can each side under optimal conditions be exposed to moisture.
  • the task is at the beginning of a device mentioned type in that in the direction of the Material web adjacent to the cooling section, a moistening section with means for increasing the temperature the material web and then a post-cooling section is provided.
  • the web of material is again in the moistening section moistened, in the post-cooling section, during the Humidification occurred temperature increase of the material web undone again.
  • a material web available that has improved handling properties, in particular with less risk of fold breakage and a reduced ripple.
  • the moistening section preferably has at least a steam spray tube directed towards the material web on.
  • the steam spray tube creates a directed one Steam jet, in this case on with a certain Pressure or a certain speed the material web is directed.
  • the beam is capable of moving on to penetrate the air layer adhering to the material web, so that the steam is directly on the by the previous one Cooling section still colder surface the material web can condense. There he forms one Moisture film that is relatively even. The moisture film then leads directly to one Moisten the material web, at least on its top.
  • the steam spray tube is preferably on the underside the material web directed. This will, as above already run, the natural tendency of the steam exploited to climb up. It results in a improved transport of the steam and thus an improved Efficiency.
  • the collecting trough preferably has raised Sidewalls on that together with the material web and optionally at least one guide roller Include steaming room.
  • this vaporization room a vapor atmosphere can now form.
  • the atmosphere in this Steaming room must be free of air. This improves crucially the transition of the steam to the material web, i.e. the formation of the corresponding condensate film. This in turn has the consequence that the humidification with the necessary reliability in the desired Scope is done.
  • This is preferably in the running direction of the material web guide roller following the steam spray tube on the same Side of the material web arranged on the too the steam spray tube is arranged.
  • this arrangement enables the formation of a gusset between the guide roller and the material web.
  • This gusset becomes on the surface of the material web moisture present through external forces in the material web is pushed in. The time to moisturize this drastically shortens the material web. You can also create a web of material in this way dampen that due to the inks or any strokes applied earlier reduced permeability for water.
  • the moistening section is advantageous with a Provide suction device. This will make excess Aspirated steam so that it is not or only in to a small extent on other parts of the device can. This also increases the risk of corrosion reduced.
  • the moistening section is above the Cooling section arranged.
  • the moistening section is above the Cooling section arranged.
  • a normal one Printing system still has enough space. This arrangement also enables existing printing systems retrofit.
  • the post-cooling section is preferably immediate arranged next to the moistening section.
  • the post-cooling section as part of the cooling section is formed, from which the material web in front led out at its end, through the humidification section passed through and back in. So there is practically no additional post-cooling section required. Rather, this is in the already existing Integrated cooling section. Often it is Performance of the existing cooling section sufficient or even dimensioned too high so that this Power reserves can be used to humidify with subsequent cooling to be able to.
  • a device 1 for printing on a paper web 2 has a printing section shown only schematically 3 on, in a known manner or several colors applied to the paper web 2 will.
  • the printing section 3 is followed by one Dryer section 4 in which the paper web 2 using is dried by heat.
  • a cooling section 6 follows in the running direction 5, of the cooling rollers 7 shown in a known manner Case six pieces.
  • the paper web 2 is over with the largest possible wrap angle these cooling rollers 7 out.
  • the cooling rolls can, for example be water cooled. They are used in the Dryer section 4 entered in the paper web 2 To remove heat and reduce the temperature.
  • Behind the cooling section 6 is usually a processing section 8 is provided in which cut, folded, stapled or bound the paper web or further processed in another way becomes.
  • the paper web is between the cooling section 6 and the processing section 8 still passed through a moistening section 9, which is followed by a post-cooling section 10.
  • the moistening section has a web guide several guide rollers 11 to 16, the paper web 2 between two guide rollers 12, 13 and 15, 16, respectively is guided essentially horizontally.
  • Sections 17, 18 are steam spray pipes 19, 20 arranged so that they spray a jet of steam against each Align underside of paper web 2.
  • the paper web 2 have previously been passed through the cooling section 6 is a correspondingly low temperature has, can by the directed steam jet the paper web 2 condensed steam condense there. He forms a moisture film that is relatively even is. Droplet formation occurs in normal operation almost completely avoided. One can do this in particular by achieving the amount of dispensed Steam controls so that only so much steam is released will, like actually on the paper web can condense.
  • each of the steam spray pipes 19, 20 Collecting pan 23, 24 arranged so that accidentally but falling water in the form of droplets is caught and can be discharged. Such Water drops can accumulate under unfavorable circumstances when starting up or restarting the device 1 form.
  • the collecting trays 23, 24 have side walls 25, 26, which are so high that they are together with the paper web 2, more precisely their sections 17, 18, and the guide rollers 12, 13 and 15, 16 each have one Include vaporization chamber 27, 28.
  • These vaporization rooms 27, 28 can be completely filled with steam, i.e. be practically free of air, so that the transmission the moisture with the help of steam on the paper web 2 is further improved.
  • the moistening section is still with a suction device 29 provided by the superfluous steam can be suctioned off, for example with the help of a Fan 30. If necessary, the extracted Steam can also be returned.
  • the post-cooling section is connected to the moistening section 10 with two further cooling rollers 31, the increase in temperature that occurred in the humidification section the web 2 reverses again.
  • the paper web 2 then runs in the usual manner in the Processing section 8 to get there as mentioned above to be processed further.
  • the moistening section 9 is above the cooling section 6 arranged. There is a corresponding place to disposal.
  • the after-cooling section 10 is the humidification section immediately adjacent. In the illustrated The embodiment is also above of the cooling section 6 arranged.
  • the after-cooling section 10 ' is now Part of the cooling section 6 '. Contrary to that 1 is the paper web 2nd in the cooling section 6 'before entering the humidification section 9 no more than six cooling rollers 7, but only passed over four cooling rollers 7. After that the paper web 2 is led out of the cooling section 6 ', passed through the moistening section 9 and fed back into the cooling section 6 ', where it wraps around another two cooling rollers 7. On in this way it becomes a separate assembly for the post-cooling plant 10 saved. However, stand in the cooling section 6 'only fewer cooling rolls 7 are available. This is but in many cases not critical, because the cooling rollers 7 often have sufficient performance reserves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (17)

  1. Procédé pour imprimer une bande de matériau (2), notamment une bande de papier, dans lequel une encre est déposée sur la bande de matériau (2), ladite bande de matériau (2) est ensuite séchée sous l'action de la chaleur, puis refroidie dans l'enchaínement, caractérisé par le fait que la bande de matériau (2) est humidifiée sous l'action simultanée de la chaleur après le refroidissement et avant le traitement ultérieur, puis est refroidie une fois encore dans l'enchaínement.
  2. Procédé selon la revendication 1, caractérisé par le fait que la bande de matériau (2) est sollicitée, en vue de l'humidification, par de la vapeur condensée sur ladite bande de matériau (2).
  3. Procédé selon la revendication 2, caractérisé par le fait que la quantité de vapeur délivrée est limitée de façon telle que ladite vapeur se condense avec absence de gouttes sur la bande de matériau (2).
  4. Procédé selon la revendication 2 ou 3, caractérisé par le fait que la vapeur est amenée par en bas sur la bande de matériau (2).
  5. Procédé selon l'une des revendications 2 à 4, caractérisé par le fait que le refroidissement a lieu directement après la vaporisation.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait que l'humidification s'opère devant un cylindre (13, 16) qui enlace au moins partiellement la bande de matériau (2) par son côté humidifié.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé par le fait que la bande de matériau (2) est successivement humidifiée par deux côtés.
  8. Dispositif pour imprimer une bande de matériau (2), comprenant un mécanisme d'impression, une zone de séchage (4) et une zone de refroidissement (6, 6'), caractérisé par le fait qu'une zone d'humidification (9), munie de moyens d'accroissement de température de la bande de matériau (2), est prévue dans la continuité directe de la zone de refroidissement (6, 6') dans la direction de défilement (5) de ladite bande de matériau (2), et une zone de post-refroidissement (10, 10') est prévue dans la continuité directe de ladite zone d'humidification.
  9. Dispositif selon la revendication 8, caractérisé par le fait que la zone d'humidification (9) présente au moins un tube (19, 20) de pulvérisation de vapeur, dirigé vers la bande de matériau (2).
  10. Dispositif selon la revendication 9, caractérisé par le fait que le tube (19, 20) de pulvérisation de vapeur est dirigé vers la face inférieure de la bande de matériau (2).
  11. Dispositif selon la revendication 10, caractérisé par le fait qu'une auge collectrice (23, 24) est placée au-dessous du tube (19, 20) de pulvérisation de vapeur.
  12. Dispositif selon la revendication 11, caractérisé par le fait que l'auge collectrice (23, 24) comporte des parois latérales rehaussées (25, 26) qui circonscrivent une chambre de vaporisation (27, 28) en association avec la bande de matériau (2) et, le cas échéant, avec au moins un cylindre directeur (12, 13 ; 15, 16).
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé par le fait que le cylindre directeur (13, 16), succédant au tube (19, 20) de pulvérisation de vapeur dans la direction de défilement (5) de la bande de matériau (2), se trouve du même côté de ladite bande de matériau (2) que le côté sur lequel ledit tube (19, 20) de pulvérisation de vapeur est également disposé.
  14. Dispositif selon l'une des revendications 8 à 13, caractérisé par le fait que la zone d'humidification (9) est pourvue d'un système (29) d'évacuation par aspiration.
  15. Dispositif selon l'une des revendications 8 à 14, caractérisé par le fait que la zone d'humidification (9) est située au-dessus de la zone de refroidissement (6, 6').
  16. Dispositif selon l'une des revendications 8 à 15, caractérisé par le fait que la zone de post-refroidissement (10) se trouve directement à côté de la zone d'humidification (9).
  17. Dispositif selon l'une des revendications 8 à 15, caractérisé par le fait que la zone de post-refroidissement (10') est réalisée sous la forme d'une partie de la zone de refroidissement (6') dont la bande de matériau (2) est extraite avant son extrémité, est acheminée à travers la zone d'humidification (9), puis est réintroduite.
EP95112820A 1994-09-02 1995-08-16 Procédé et dispositif pour imprimer une bande Expired - Lifetime EP0699529B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4431252 1994-09-02
DE4431252A DE4431252B4 (de) 1994-09-02 1994-09-02 Verfahren und Vorrichtung zum Bedrucken einer Materialbahn

Publications (2)

Publication Number Publication Date
EP0699529A1 EP0699529A1 (fr) 1996-03-06
EP0699529B1 true EP0699529B1 (fr) 1998-04-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112820A Expired - Lifetime EP0699529B1 (fr) 1994-09-02 1995-08-16 Procédé et dispositif pour imprimer une bande

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US (2) US5619927A (fr)
EP (1) EP0699529B1 (fr)
DE (1) DE4431252B4 (fr)

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US5832833A (en) * 1995-07-25 1998-11-10 Burgio; Joseph Thomas Apparatus and method for drying a substrate printed on a multi-stand offset press
US5727472A (en) * 1995-07-25 1998-03-17 Burgio; Joseph Thomas Apparatus and method for drying sheets printed on a multi-stand press
DE19546265C2 (de) * 1995-12-12 2000-11-23 Koenig & Bauer Ag Verfahren und Vorrichtung zum Zuführen einer bedruckten Papierbahn
JP3255070B2 (ja) * 1997-01-24 2002-02-12 株式会社東京機械製作所 乾燥用加熱ローラーを具備した輪転機
US5881647A (en) * 1997-08-29 1999-03-16 Hurletron, Incorporated Printing press with electrostatic cooling
DE19812149A1 (de) * 1998-03-20 1999-09-23 Heidelberger Druckmasch Ag Kühlwalze
FI113791B (fi) * 1998-06-22 2004-06-15 Metso Paper Inc Menetelmä ja laitteisto rainan pinnan käsittelemiseksi
DE19901802B4 (de) * 1999-01-19 2004-02-12 Baldwin Germany Gmbh Vorrichtung zur Rückbefeuchtung einer getrockneten Papierbahn
DE19901801C2 (de) * 1999-01-19 2003-12-11 Baldwin Germany Gmbh Vorrichtung zum Konditionieren einer Papierbahn
DE19918130A1 (de) * 1999-04-21 2000-10-26 Heidelberger Druckmasch Ag Kühl- und Befeuchtungseinheit für Rotationsdruckmaschinen
US6376024B1 (en) 1999-05-28 2002-04-23 Hurletron, Incorporated Web processing with electrostatic cooling
US6076466A (en) * 1999-05-28 2000-06-20 Hurletron, Incorporated Printing press with electrostatic cooling and method of operating
US6735883B1 (en) 1999-10-15 2004-05-18 Megtec Systems, Inc. Electrostatic assisted web cooling and remoistening device
US6322732B1 (en) * 1999-10-29 2001-11-27 Dittler Brothers Incorporated Method for finishing pre-printed paper from multiple webs
AU1348201A (en) * 1999-10-29 2001-05-14 Daniel Bostrack Print cylinder cooling system
US6299685B1 (en) 2000-02-11 2001-10-09 Hurletron, Incorporated Web processing with electrostatic moistening
US6775925B2 (en) 2000-05-17 2004-08-17 Megtec Systems Inc. Water spray web cooling apparatus for web dryer
AU2001257629A1 (en) * 2000-05-17 2001-11-26 Megtec Systems, Inc. Water spray web cooling apparatus for web dryer
EP1201429B1 (fr) * 2000-10-24 2012-06-27 Goss Contiweb B.V. Procédé et dispositif refroidisseur pour une bande de matériau
DE10231598A1 (de) * 2001-08-07 2003-02-20 Heidelberger Druckmasch Ag Vorrichtung zum Wiederbefeuchten einer Warenbahn
US20040045996A1 (en) * 2002-09-06 2004-03-11 Lamothe Richard P. Web outfeed processing system for high performance printer
DE102004002232B4 (de) * 2004-01-15 2007-09-13 OCé PRINTING SYSTEMS GMBH Multifunktionseinrichtung zur Nachbearbeitung einer von einer elektrografischen Druckeinrichtung bedruckten Bedruckstoffbahn
EP1795347A3 (fr) * 2005-10-28 2010-10-27 Koenig & Bauer Aktiengesellschaft Support pour cylindre de refroidissement et méthode pour refroidir une bande de papier guidée dans ce support
ES2261101B1 (es) 2006-05-22 2007-12-16 Digital Internet Transport System, S.L. Procedimiento y dispositivo para acondicionamiento de papel.
US8118420B2 (en) * 2007-12-21 2012-02-21 Palo Alto Research Center Incorporated Contactless ink leveling method and apparatus
CN108237771A (zh) * 2016-12-23 2018-07-03 天津汇创装饰材料有限公司 一种木纹膜印刷用烘干装置
CN109466167A (zh) * 2018-09-17 2019-03-15 宣城凯欧纺织有限公司 一种高效拔染印花设备及印花方法

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EP0627311A1 (fr) * 1993-04-30 1994-12-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de refroidissement de bandes

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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0627311A1 (fr) * 1993-04-30 1994-12-07 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de refroidissement de bandes

Also Published As

Publication number Publication date
US5642671A (en) 1997-07-01
EP0699529A1 (fr) 1996-03-06
DE4431252B4 (de) 2004-01-29
DE4431252A1 (de) 1996-03-07
US5619927A (en) 1997-04-15

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