EP1022135A2 - Vorrichtung zur Rückbefeuchtung einer getrockneten Papierbahn - Google Patents
Vorrichtung zur Rückbefeuchtung einer getrockneten Papierbahn Download PDFInfo
- Publication number
- EP1022135A2 EP1022135A2 EP00100098A EP00100098A EP1022135A2 EP 1022135 A2 EP1022135 A2 EP 1022135A2 EP 00100098 A EP00100098 A EP 00100098A EP 00100098 A EP00100098 A EP 00100098A EP 1022135 A2 EP1022135 A2 EP 1022135A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper web
- spray
- dryer
- chambers
- temperature
- 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.)
- Granted
Links
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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
Definitions
- the invention relates to a device for rewetting a preferably freshly printed, dried paper web with arranged above and below the paper web, with Wetting agent spray nozzles and these receiving spray chambers.
- a device of this type is known from DE 196 15 198 C1.
- the spray chambers are each followed by a nozzleless condensation chamber which is provided with an exhaust air chimney.
- the flow resistance in the exhaust air chimney is comparatively high.
- the volume of air introduced into the spray chambers is very large. About 1m 3 of air with excess pressure is normally fed to the spray nozzles and thus the spray chambers per liter of dampening solution.
- the exhaust air chimneys which have a comparatively high flow resistance, will not remove the entire amount of air, so that there is a fear that part of the air will overlap the air knife provided in the area of the outlet or inlet slot of the known device outside urges.
- each Spray chamber arranged in an associated suction chamber which is assigned by means of at least one in each case Extractor fan is extractable.
- the measures according to the invention ensure that the air supplied to the spray chambers in each assigned suction chamber and caught by means of Exhaust fan is reliably discharged. Outward urgent air and associated condensate formation and Soiling of the paper web due to falling Condensate drops and a floating of the paper web on the Chill rolls are advantageously not to be feared.
- the are achievable advantages with the measures according to the invention therefore especially in the avoidance of malfunctions and Waste and thus overall in a high cost-effectiveness to see.
- each exhaust fan can be useful at least a cooler upstream.
- each cooler can be advantageously used via an a water separator leading condensate drain with an in one for drying the freshly printed paper web provided dryer connected oil evaporator connected be, so that an expensive disposal of the oil as hazardous waste can be omitted.
- Another advantageous measure can be that the spray and suction chambers in the cooling zone one to Allow the freshly printed paper web to dry Dryer can be arranged. This will required distance between the dryer and this one downstream cooling roll stand reduced. In addition, the Simply blow the suction blower into the dryer, which makes its own outlet devices unnecessary and at the same time the Energy balance of the dryer improved because of the Extracted air is already preheated. On Another advantage of these measures is that not only the moisture content of the paper web on the desired level can be raised, but that the Paper web can also be subjected to liquid cooling can what is beneficial to avoiding installation space affects.
- the drawing described below shows one schematic longitudinal section through a with a Humidifier provided dryer.
- the fields of application of the invention are generally Web-fed rotary presses that have a dryer is subordinate.
- the dryer 1 shown in the drawing which between the last printing unit of a not shown Web-fed rotary printing machine and also not closer arranged cooling roll stand has three in Direction of travel of the paper web 2 zones arranged one behind the other, namely a heating zone 3, a temperature maintenance zone 4 and one Cooling zone 5. Each zone is a compartment within the housing of the Dryer 1 assigned. Between the successive Divisions 6 are provided.
- the compartment assigned to the cooling zone 5 contains one as a whole designated 8 humidifier, which for Cooling and remoistening of the paper palm 2 is used in the upstream zones based on the local zones Heat exposure loses moisture.
- the paper web 2 with a dampening solution preferably in the form of water, acted upon.
- the amount of dampening solution fed to the paper web 2 is so large that the paper web 2 to the desired Temperature is cooled and the moisture content of the Paper web 3 raised to the desired level at the same time becomes. Cooling is done by evaporating liquid, the heat of vaporization of the paper web 2 being removed. However, the evaporating liquid does not result in rewetting.
- the total amount of liquid fed to the paper web 2 therefore consists of a rewetting component and a Surcharge for cooling.
- the total amount of liquid is set accordingly depending on the moisture requirement of the Paper web 2 and the desired cooling temperature difference.
- the desired cooling temperature difference In simple cases can be a function of temperature the paper web 2 in front of the moistening device 8, i.e. useful when leaving the temperature maintenance zone 4, as well as the Web speed and paper type control be provided.
- a regulation would also be conceivable, however the additionally or alternatively the moisture and / or Temperature of the paper web 2 after the moistening device 8 and / or the temperature in the cooling zone 5 as actual values come in.
- the moistening device 8 contains above and below the transport plane of the paper web 2, here roof or V-shaped spray chambers 9, each one over the entire width of the paper web 2 continuous row of Spray nozzles 10 included. Of course there could be several Rows of nozzles may be provided. The row of spray nozzles extends expedient across the entire dryer width and is through Switching off outer nozzles adaptable to the width of the paper web.
- the spray nozzles 10 are in the example shown Fountain solution, preferably in the form of water, and compressed air to blow out and atomize the dampening solution, as indicated by the supply lines 11, 12.
- This are provided with switching elements 13, 14 in the form of valves, etc. which can be controlled here by means of a control device 15, the actual value inputs for the temperature of the paper web 2 before Humidification, the temperature of the cooling zone 5 and the Moisture and temperature of the paper web 2 after Has humidification.
- These actual value inputs are over Signal lines with assigned sensors, here the Temperature sensors 16, 17 and a combined temperature and Moisture sensor 30 connected.
- the one assigned to the web temperature before moistening Temperature sensor 16 is in the output range Temperature maintenance zone 4 arranged near the paper web 2.
- the the temperature in the cooling zone 5 assigned temperature sensors 17 is in the cooling zone 5 outside the moistening device 8 arranged.
- the combined temperature and humidity sensor 30 is arranged in the area of the outlet of the dryer 1.
- the control device 15 is still with a another input, advantageously coupled to the printing press 31 for the web speed and with an input option 32 for entering fixed parameters, such as the paper type, Mistake.
- the spray chambers 9 are thus each assigned an roof or V-shaped suction chamber 18 overlapped or understands that there are extraction shafts 19 surrender. These are suctioned off individually or together.
- the dryer 1 is tempered Air supplied so that the sucked in from the outside by arrows 21 indicated fresh air can be reduced accordingly what has a favorable effect on energy requirements.
- a cooler 22 is arranged upstream of each suction fan 20. This acts as a condenser for excreting Liquid in the form of dampening solution and oil extracted from the Air.
- the dryer 1 is therefore by the blower 20th supplied relatively unpolluted air. That by means of the cooler 22 condensate is discharged via a condensate drain line 23 removed.
- the secluded Water can be used to avoid disposal of the nozzles 10 be fed again.
- the water outlet 33 of the Water separator 24 returned to the supply line 11 his.
- the junction is conveniently located upstream from the switching element 13.
- Humidification device 8 achievable liquid cooling Paper web 2 results, as the drawing clearly shows leaves, a very compact compared to zones 3, 4 Construction of the cooling zone 5.
- the spray nozzles 10 producible liquid jets 28 have a high Penetration force, as a result of which the paper web 2 flanking laminar air layers that are loaded with solvent, be reliably torn open. This is the result of Evaporation volume increase still supported. The solvent is sucked off together with the air and thus reliably disposed of.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims (10)
- Vorrichtung zur Rückbefeuchtung einer mit wenigstens einer ölhaltigen Farbe frisch bedruckten, getrockneten Papierbahn (2) mit oberhalb und unterhalb der Papierbahn (2) angeordneten, mit Befeuchtungsmittel beaufschlagbaren Sprühdüsen (10) und diese aufnehmenden Sprühkammern (9), dadurch gekennzeichnet, dass jede Sprühkammer (9) in einer zugeordneten Absaugkammer (18) angeordnet ist, die mittels wenigstens eines zugeordneten Absauggebläses (20) absaugbar ist, dem wenigstens ein Kühler (22) vorgeordnet ist, der über eine Kondensatablaufleitung (23) mit einem Ölverdampfer (25) verbunden ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Sprühdüsen (10) mit Feuchtmittel und Druckluft zum Ausblasen des Feuchtmittels beaufschlagbar sind.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Ölverdampfer (25) in einem zum Trocknen der Papierbahn (2) vorgesehenen Trockner (1), vorzugsweise in der Temperaturhaltezone (4) des Trockners (1), angeordnet ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jedem Kühler (22) wenigstens ein vorzugsweise in der Kondensatableitung (23) angeordneter Wasserabscheider (24) nachgeordnet ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass am Ein- und Ausgang der Absaugkammern (18) mit Druckluft beaufschlagbare Luftrakel (26) vorgesehen sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an den unteren Enden der Wände der oberen Sprühkammer (9) und Absaugkammer (18) Tropfenfänger (27) angeordnet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sprühkammern (9) und Absaugkammern (18) dach- bzw. v-förmig ausgebildet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sprühkammern (9) samt jeweils zugeordneter Absaugkammer (18) in der Abkühlzone (5) eines zum Trocknen der bedruckten Papierbahn (2) vorgesehenen Trockners (1) angeordnet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das bzw. die Absauggebläse (20) in den Trockner (1) ausblasen.
- Vorrichtung nach einem der vorhergehenden Ansprüche 8 oder 9, dadurch gekennzeichnet, dass die den Sprühdüsen (10) zugeführte Feuchtmittelmenge größer als die Rückbefeuchtungsmenge ist, wobei die den Sprühdüsen (10) zugeführte Feuchtmittelmenge vorzugsweise in Abhängigkeit von der Papierart, der Bahngeschwindigkeit, der Temperatur der Papierbahn (2) vor der Befeuchtungseinrichtung (8) und/oder der Temperatur in der Abkühlzone (5) des Trockners (1) und/oder der Temperatur der Papierbahn (2) nach der Befeuchtungseinrichtung (8) und/oder der Feuchtigkeit der Papierbahn (2) nach der Befeuchtungseinrichtung (8) mittels einer Regelungseinrichtung (15) regelbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19901802A DE19901802B4 (de) | 1999-01-19 | 1999-01-19 | Vorrichtung zur Rückbefeuchtung einer getrockneten Papierbahn |
DE19901802 | 1999-01-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1022135A2 true EP1022135A2 (de) | 2000-07-26 |
EP1022135A3 EP1022135A3 (de) | 2001-11-07 |
EP1022135B1 EP1022135B1 (de) | 2003-11-12 |
Family
ID=7894636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00100098A Expired - Lifetime EP1022135B1 (de) | 1999-01-19 | 2000-01-07 | Vorrichtung zur Rückbefeuchtung einer getrockneten Papierbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US6430972B1 (de) |
EP (1) | EP1022135B1 (de) |
JP (1) | JP2000211205A (de) |
CN (1) | CN1261028A (de) |
DE (2) | DE19901802B4 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1224083A4 (de) * | 1999-10-15 | 2004-12-15 | Megtec Sys Inc | Vorrichtung zum elektrostatischem unterstützem kühlen und rückbefeuchtung von bahnen |
DE10231598A1 (de) * | 2001-08-07 | 2003-02-20 | Heidelberger Druckmasch Ag | Vorrichtung zum Wiederbefeuchten einer Warenbahn |
JP2008273032A (ja) * | 2007-04-27 | 2008-11-13 | Mitsubishi Heavy Ind Ltd | オフセット印刷機による印刷方法及びオフセット印刷機 |
DE102007062454A1 (de) * | 2007-12-22 | 2009-07-02 | Robert Bosch Gmbh | Verfahren zur Regelung einer Bahnspannung und/oder eines Registers |
CN102673117B (zh) * | 2011-03-18 | 2014-03-26 | 武汉虹之彩包装印刷有限公司 | 一种用于丝网印刷的加湿装置 |
ITTO20120981A1 (it) * | 2012-11-13 | 2014-05-14 | Itt Italia Srl | Metodo ed impianto per la verniciatura a polvere di elementi elettricamente non conduttivi, in particolare pastiglie freno |
CN103696324A (zh) * | 2013-12-04 | 2014-04-02 | 安徽省嘉信包装印务有限公司 | 一种瓦楞纸加湿水槽 |
CN106113930B (zh) * | 2016-08-09 | 2018-05-22 | 湖州佳宁印刷有限公司 | 一种印刷机的纸张处理装置 |
CN108582997B (zh) * | 2018-05-17 | 2019-10-01 | 重庆川之舟印务设计有限公司 | 用于印刷品表面烘干的设备 |
DE102019206973A1 (de) * | 2018-06-14 | 2019-12-19 | Heidelberger Druckmaschinen Ag | Bogendruckmaschine mit einer Befeuchtungseinrichtung |
DE102018211079A1 (de) * | 2018-07-05 | 2020-01-09 | Heidelberger Druckmaschinen Ag | Bogendruckmaschine mit einer Befeuchtungseinrichtung |
CN112810313A (zh) * | 2021-02-08 | 2021-05-18 | 常州捷佳创智能装备有限公司 | 冷却风道组件和烘干设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464119A (en) * | 1947-01-07 | 1949-03-08 | Fred C Dawson | Moistening apparatus |
DE19615198C1 (de) * | 1996-04-17 | 1997-07-24 | Grafotec Gmbh | Vorrichtung zur Rückbefeuchtung einer Bedruckstoffbahn |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420739A (en) * | 1945-10-25 | 1947-05-20 | American Seal Kap Corp | Drying unit using steam jets |
US2804693A (en) * | 1955-09-07 | 1957-09-03 | Levey Fred K H Co Inc | Printing |
DE1635336A1 (de) * | 1966-07-22 | 1971-05-06 | Vepa Ag | Vorrichtung zum Behandeln insbesondere von Textilgut |
US3574261A (en) * | 1968-09-24 | 1971-04-13 | Grace W R & Co | Apparatus and method for drying permeable webs |
US4430779A (en) * | 1979-04-11 | 1984-02-14 | Lawrence Rockman | Apparatus for steam conditioning textile fabrics |
FR2578553B1 (fr) * | 1985-03-06 | 1989-01-06 | Bertin & Cie | Installation de refroidissement par pulverisation |
DE8631105U1 (de) * | 1986-11-20 | 1987-01-08 | Vepa AG, Riehen, Basel | Entwässerungsvorrichtung mittels Absaugung der Flüssigkeit |
FR2690871B1 (fr) * | 1992-05-06 | 1997-01-17 | Materiels Equip Graphiques Sa | Rehumidificateur de papier. |
GB2282463A (en) * | 1993-09-10 | 1995-04-05 | Manfred George Michelson | Cleaning photographic film |
WO1995008026A1 (de) * | 1993-09-14 | 1995-03-23 | J. M. Voith Gmbh | Verfahren und einrichtung zum beschichten einer laufenden warenbahn |
KR100369200B1 (ko) * | 1994-04-30 | 2003-03-26 | 가부시키가이샤 세이부 기켄 | 고속유체에의한저온급속탈수건조의방법 |
US5849321A (en) * | 1994-07-01 | 1998-12-15 | Valmet Corporation | Method and apparatus for spray-coating a paper or board web |
DE4431252B4 (de) * | 1994-09-02 | 2004-01-29 | V.I.B. Systems Gmbh | Verfahren und Vorrichtung zum Bedrucken einer Materialbahn |
DE19539015C2 (de) * | 1995-02-24 | 1998-02-12 | Voith Sulzer Papiermasch Gmbh | Reinigungsvorrichtung |
ATE209271T1 (de) * | 1995-02-24 | 2001-12-15 | Voith Paper Patent Gmbh | Reinigungsvorrichtung |
FI108061B (fi) * | 1995-10-05 | 2001-11-15 | Metso Paper Inc | Menetelmä liikkuvan paperi- tai kartonkirainan päällystämiseksi |
US5799409A (en) * | 1996-05-15 | 1998-09-01 | Voith Sulzer Papiermaschinen Gmbh | Device for drying a material web with heated and cooled cylinders |
FI107549B (fi) * | 1996-06-19 | 2001-08-31 | Metso Paper Inc | Menetelmä ja laite paperirainan tai vastaavan rainamaisen materiaalin päällepuhallus- ja/tai läpipuhalluskuivatuksen yhteydessä |
DE19627973A1 (de) * | 1996-07-11 | 1998-01-15 | Voith Sulzer Papiermasch Gmbh | Reinigungsvorrichtung |
US6148831A (en) * | 1996-10-25 | 2000-11-21 | Valmet Corporation | Method for cleaning a web |
DE19726897C2 (de) * | 1997-06-25 | 2000-01-13 | Voith Sulzer Papiermasch Gmbh | Verfahren zum Reinigen eines Transportbandes |
DE19820432A1 (de) * | 1998-05-07 | 1999-11-11 | Voith Sulzer Papiertech Patent | Verfahren und Vorrichtung zum Aufbringen eines Auftragsmediums auf einen laufenden Untergrund |
-
1999
- 1999-01-19 DE DE19901802A patent/DE19901802B4/de not_active Expired - Fee Related
- 1999-12-21 US US09/467,918 patent/US6430972B1/en not_active Expired - Fee Related
-
2000
- 2000-01-07 DE DE50004379T patent/DE50004379D1/de not_active Expired - Fee Related
- 2000-01-07 EP EP00100098A patent/EP1022135B1/de not_active Expired - Lifetime
- 2000-01-18 CN CN00101101A patent/CN1261028A/zh active Pending
- 2000-01-18 JP JP2000009484A patent/JP2000211205A/ja not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464119A (en) * | 1947-01-07 | 1949-03-08 | Fred C Dawson | Moistening apparatus |
DE19615198C1 (de) * | 1996-04-17 | 1997-07-24 | Grafotec Gmbh | Vorrichtung zur Rückbefeuchtung einer Bedruckstoffbahn |
Also Published As
Publication number | Publication date |
---|---|
DE19901802B4 (de) | 2004-02-12 |
EP1022135A3 (de) | 2001-11-07 |
CN1261028A (zh) | 2000-07-26 |
US6430972B1 (en) | 2002-08-13 |
EP1022135B1 (de) | 2003-11-12 |
DE50004379D1 (de) | 2003-12-18 |
JP2000211205A (ja) | 2000-08-02 |
DE19901802A1 (de) | 2000-07-27 |
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