EP1258352B1 - Vorrichtung zum Kühlen einer Materialbahn - Google Patents

Vorrichtung zum Kühlen einer Materialbahn Download PDF

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Publication number
EP1258352B1
EP1258352B1 EP02007335A EP02007335A EP1258352B1 EP 1258352 B1 EP1258352 B1 EP 1258352B1 EP 02007335 A EP02007335 A EP 02007335A EP 02007335 A EP02007335 A EP 02007335A EP 1258352 B1 EP1258352 B1 EP 1258352B1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling medium
vapour
web
pressure
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
EP02007335A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1258352A1 (de
Inventor
Clemens Johannes Maria De Vroome
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.)
Contiweb BV
Original Assignee
Goss Contiweb BV
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 Goss Contiweb BV filed Critical Goss Contiweb BV
Publication of EP1258352A1 publication Critical patent/EP1258352A1/de
Application granted granted Critical
Publication of EP1258352B1 publication Critical patent/EP1258352B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • 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
    • 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
    • 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
    • B41F23/0483—Drying combined with cooling

Definitions

  • the invention relates to an apparatus and a method for cooling a material web, in particular a printed and heated in a hot air dryer paper web in a web-fed rotary printing press, according to the preamble of claim 1 and claim 11.
  • a dryer for example a hot air dryer, in which the web by hot air from For example, about 300 ° C is dried while passing through the dryer.
  • the web After leaving the dryer, the web has a temperature of, for example, about 100 ° C and, before it is fed to a downstream folder, passed through a cooling device, for example a chill roll stand, in which they are guided by cooling rolls through which cooling fluid flows is cooled to, for example, about 20 ° C.
  • the necessary increase in temperature for example, by burning a fuel gas in a combustion chamber and / or the afterburning of the evaporated solvent from the web causes a portion of the heated and post-combusted air is energetically unused as waste heat fed to a fireplace.
  • a cooling capacity of the order of, for example, 100 kW is required for the operation of the cooling device.
  • a device for drying and cooling of freshly printed paper webs in which the required heat energy for the operation of a Absorption refrigeration system is supplied by the hot exhaust gas to a secondary combustion chamber.
  • the hot exhaust gas is first supplied to a heat exchanger, in which a part of the heat is transferred to a heating medium in a first circuit, wherein the hot medium flows through a heating coil in a digester.
  • gaseous refrigerant is expelled from a refrigerant solution, for example an ammonia solution, at elevated temperature and pressure, which is supplied in a second circuit to a condenser in which a third loop cooling coil connected to a recooler is arranged.
  • the gaseous refrigerant is liquefied by heat exchange with the circulated cooling water of the third circuit and fed in the second circuit via an expansion valve to an evaporator in which in turn a heating coil is arranged, which is connected to the cooling registers of a cooling device via a fourth circuit. Heat is transferred to the refrigerant via the heating coil in the evaporator and thus a heat transfer medium in the fourth circuit cools.
  • the low pressure refrigerant vapor passes via the second circuit to an absorber where it is absorbed in low concentration refrigerant solution.
  • a cooling coil of a fifth circuit is arranged, which dissipates the released in the absorber heat of absorption.
  • the now enriched refrigerant solution is pumped back into the digester within the second circuit by a pump at elevated pressure, while at the same time from the digester via a control valve low-refrigerant solution is supplied to the absorber.
  • This device has the disadvantage that it has a very complex structure, in particular comprises five separate heating and coolant circuits and thereby on the one hand generates high investment and operating costs and on the other has very large dimensions, so provided at cost a correspondingly large footprint must become. Furthermore, it is disadvantageous that the device for operation requires a highly volatile refrigerant, which leak in leaks of the usually closed second circuit in the pressure chamber and can lead to environmental and health damage.
  • prior art steam jet vacuum pumps are known, for example those sold by Schutte & Koerting which create a vacuum by means of high pressure steam.
  • the high-pressure steam is first supplied to a nozzle, from which it flows while reducing the pressure and simultaneously increasing the speed of the steam in a downstream of the nozzle tapered portion of the steam jet vacuum nozzle.
  • a vacuum is created at a lateral opening which communicates with the central portion.
  • the steam flows through a widening section of the steam jet vacuum nozzle, wherein the speed decreases again and the pressure of the steam increases again, so that it can escape against an external pressure from the steam jet vacuum nozzle.
  • the invention is accordingly an object of the invention to provide a device which causes the cooling of a web by a simple structure, and thereby at a cost savings while maintaining high reliability. Furthermore, it is an object of the present invention to provide a device for cooling a material web, which comprises only very few moving parts and works without chemicals, which make special demands on the construction and the operation of the device.
  • the device according to the invention for cooling a material web, in particular a printed and heated in a hot air dryer paper web in a web-fed rotary printing press, wherein the device uses waste heat of a heater for evaporative cooling of a cooling medium, which is passed to cool the web through a cooling unit, and wherein a first portion of Evaporated cooling medium and a second portion of the cooling medium is cooled by removal of heat of vaporization, characterized by at least one Steam generator, in which, at least in part by means of the waste heat of the heater, steam is generated, at least one steam jet vacuum nozzle, which is operated with the steam and which generates a negative pressure, and a vacuum chamber, in which the cooling medium with the negative pressure for at least partial evaporation and Cooling is applied, off.
  • the device for cooling a material web only very few and easy-to-use components, so on the one hand the purchase and operation of the device causes only low costs, while on the other hand, the operation of the device also only at low cost and at the same time with very high Reliability is feasible.
  • the device according to the invention has a steam jet vacuum nozzle, which has a very small construction volume in comparison to the power provided by it, so that it can be arranged advantageously, without major conversion measures, in the vicinity or in the device for cooling a material web.
  • a steam jet vacuum nozzle advantageously has no moving parts, so that only very little or even no appreciable wear occurs during operation, which in turn saves costs and labor for repairs.
  • the device according to the invention uses, at least in part, the waste heat of a heating device, and thus advantageously results in a high energy and cost saving.
  • the apparatus may both have a first steam jet vacuum nozzle which generates a first negative pressure applied to the cooling medium and at least one second steam jet vacuum nozzle which generates a second negative pressure which is greater than the first negative pressure is and with which the cooling medium is applied.
  • the first steam jet vacuum nozzle can generate a pre-vacuum, from which starting at least one further Steam jet vacuum nozzle either generates the desired vacuum or again generates only an intermediate vacuum, which can be gradually reduced by further steam jet vacuum nozzles.
  • This also makes it possible, for example, advantageously, instead of an extremely powerful steam jet vacuum nozzle, to operate a plurality of lower-powered steam jet vacuum nozzles for generating a desired vacuum. Since the steam jet vacuum nozzles, as already mentioned, advantageously have small dimensions, there is also the advantage that even when using a plurality of steam jet vacuum nozzles in the apparatus for cooling a material web, there is only a relatively small overall space requirement.
  • the sub-chamber has at least two sections or at least two sub-chambers, which are connected to each other for exchanging cooling medium, wherein the sections or the sub-chambers are subjected to different sized sub-pressures.
  • each of the sections or the sub-chambers to a respective desired vacuum by means of their own steam-jet vacuum nozzle assigned to them and thereby to build up the desired final vacuum in a last of the interconnected sections or sub-chambers.
  • the device has a temperature measuring unit and a control or regulating unit, wherein the temperature measuring unit determines the temperature of the cooling medium before the passage of the cooling medium through the cooling device and the control unit depending on the temperature of the vapor flow through the steam jet vacuum nozzle controls or regulates.
  • the steam flow through the steam jet vacuum nozzle As the steam flow through the steam jet vacuum nozzle is increased, it creates a higher vacuum which increases the amount of vaporized cooling medium and, at the same time, more strongly cools the cooling medium left in the vacuum chamber. A reduction of the vapor flow causes in the same way less cooling of the cooling medium in the vacuum chamber.
  • the vapor flow for example by driving a valve, can thus be influenced in the desired manner in an advantageously simple manner on the basis of the measured temperature of the cooling medium before passage through the cooling device. Adjusting or regulating, for example, a predetermined temperature of the cooling medium can thus be carried out in a simple manner and with rapid reaction.
  • control or regulating device may comprise a control device configured in a known manner, which compares the measured temperature value as actual value with a predetermined temperature value as desired value and carries out the regulation as a function of the deviation of the two values.
  • a further embodiment of the device according to the invention may comprise a pump, a pressure measuring unit and a control or regulating unit, wherein the pump may be installed in a supply line from the vacuum chamber to the cooling unit, wherein the pressure measuring unit can determine the pressure difference of the cooling medium before and after the pump and wherein the control or regulating unit controls or regulates the delivery rate of the pump in a known manner as a function of the pressure difference.
  • the pressure of the cooling medium before the passage of the cooling medium through the cooling device can be set in the desired manner in an advantageous manner.
  • Another device according to the invention may be characterized in that the temperature of the cooling medium is regulated to about 10 ° C and the pressure of the cooling medium to about 1.7 bar.
  • the heating device whose waste heat is used to generate steam is a hot air dryer, in particular a combustion chamber or an afterburner of a hot air dryer.
  • hot air dryers for drying the printed material web are used in particular in the operation of web-fed rotary printing machines whose waste heat has the amount of energy required to operate a device for cooling the web, it is advantageous to operate the device for cooling a web with the operation of the heater in the Way to combine that the waste heat, so the energy loss of the hot air dryer at least partially flows directly as useful energy in the device for cooling.
  • the dryer and cooling device are arranged in spatial proximity to one another, so that it is possible to dispense with long supply lines, which in particular must be heat-insulated. Even when operating a hot air dryer with integrated cooling device, for example with integrated chill roll stand, it is particularly advantageous to equip it with a device according to the invention for cooling a material web.
  • the entire device for cooling the material web can be integrated with the dryer in an advantageous manner while saving space, but it is also conceivable that, for example, only the steam jet vacuum nozzles are integrated into the dryer. Since the steam jet vacuum nozzles have an elongated construction due to their functional principle, it is advantageous to integrate them in the likewise elongated design of a dryer, in particular a hot-air dryer.
  • a further embodiment of the present invention can be characterized in that the cooling device comprises at least one cooling roller, through which the cooling medium is guided, and which in particular has a diameter in the range of 150 mm to 250 mm.
  • a cooling device with at least one cooling roller in conjunction with the device according to the invention also leads to the advantage that the cooled by the device cooling medium can be passed directly through the cooling rollers, so can be dispensed with further heat exchanger and cooling media in an advantageous manner.
  • the diameter of the cooling rollers in the range of 150 mm to 250 mm, so by the choice of a relatively small diameter of the cooling rollers, is It is also advantageous that the cooling rollers, which have, for example, a hollow interior, with a relatively small amount of coolant can be flowed through to bring about the desired cooling effect.
  • the connection of the device according to the invention which has a small footprint, with a chill roll stand having chill rolls with small diameters leads to a total cooling device, which reduces the footprint of the entire web-fed rotary printing press considerably.
  • the cooling of a cooling medium is effected in an advantageous manner with low costs and low workload, due to the small number of process steps and their respective simple feasibility, the process is also very reliable in the long run.
  • the generation of a negative pressure by means of the steam jet vacuum nozzle is done without moving parts and without the use of special chemicals, so that no signs of wear are to be expected, and can be dispensed with special security measures.
  • FIG. 1 shows a hot-air dryer 2, which has three sections 4, 6 and 8, a combustion chamber 10 and an integrated chill roll stand 12, and through which a printed paper web 14 is guided around cooling rolls 16.
  • the hot exhaust air generated by the hot air dryer 2 is supplied via a line 18 to a heat exchanger 20 and discharged from it via a chimney 22.
  • a heating medium is heated, which is supplied via a feed line 24 to a steam generator 26 and is guided by this via a return line 28 to the heat exchanger.
  • the steam generated in the steam generator 26, for example water vapor, is conducted via a line 30, in which a controllable valve 32 is installed, to a first steam jet nozzle 34 and a second steam jet nozzle 36, from where the steam in turn returns via a line 38 can be performed to one of the sections of the hot air dryer 2.
  • a controllable valve 32 is installed, to a first steam jet nozzle 34 and a second steam jet nozzle 36, from where the steam in turn returns via a line 38 can be performed to one of the sections of the hot air dryer 2.
  • the components shown within the region of FIG. 1 delimited by the line 40 can also be arranged within the hot-air dryer 2.
  • a respective vacuum is generated at the points 42 and 44, which have a narrowed cross section which is applied via laterally mounted lines 46 and 48, a vacuum chamber 50, in which a cooling medium 52 is located.
  • the vacuum chamber 50 has a first section 54 in which a first vacuum is created above the cooling medium 52 by means of the steam jet vacuum nozzle 34 and further comprises a second section 56 in which a second vacuum is generated by the steam jet vacuum nozzle 36 which is higher than the first vacuum in the first section 54 is.
  • the cooling medium is now guided at a certain temperature and pressure from a branching point 62 via a line 64, via a mixing valve 66 and a shut-off valve 68 to a cooling roll 70 of the cooling roll stand 12, and passed therethrough.
  • the chill roll 70 is enlarged for illustrative purposes and shown outside of the chill roll stand 12.
  • the surface of the cooling roll is maintained at a low temperature level, so that a surface-guided paper web 14 is cooled by contact with the surface.
  • the cooling medium is supplied via a line 72 to a reservoir 74, in which the cooling medium is stored and from which this can be passed via a line 76 and via a valve 78 back into the vacuum chamber 50.
  • the device according to the invention may comprise further components.
  • the vacuum chamber 50 may be provided with a temperature measuring device 88, which determines the temperature of the cooling medium in the vacuum chamber, the measured Temperature values, for example, a control or regulating device 90 are supplied, which actuates the control valve 32 in the line 30 in dependence of the measured and possibly predetermined temperature values by means of a motor 92.
  • a control or regulating device 90 are supplied, which actuates the control valve 32 in the line 30 in dependence of the measured and possibly predetermined temperature values by means of a motor 92.
  • the pressure of the steam jet vacuum nozzles 34 and 36 supplied steam is adjustable, whereby in consequence the vacuum generated at the points 42 and 44 can be influenced. Since this vacuum in turn affects the amount of vaporized cooling medium in the vacuum chamber 50, and thus the amount of heat of evaporation removed, in this way the temperature of the cooling medium can be adjusted exactly.
  • the pressure difference between measuring points before and after the pump 60 can be determined, wherein the measured value can also be supplied to the control or regulating device 90, which depends on the measured value and possibly predetermined pressure difference values via a motor 96, the delivery rate of the pump 60 is increased or decreased, so that the pressure with which the cooling medium is passed through the cooling roller 70, in the desired manner, that can be set to a desired value.
  • the branch point 62 via a line 98, to guide the cooling medium through a heating region 100 in which the cooling medium is heated.
  • the temperature of the cooling medium can be measured before passing the cooling medium through the cooling roller 70, wherein the measured values can in turn be fed to the control or regulating device, which, for example, depending on the operating state of the web-fed rotary printing press via a motor 104 Can be operated mixing valve 66, whereby cooled cooling medium from the vacuum chamber with heated cooling medium from the heating region 100 is mixed and the cooling roller 70 is supplied.
  • the temperature level of the cooling medium can be increased from an operating temperature of about 10 ° C by operating the mixing valve to about 20 ° C so that condensation does not occur on the chill rolls when the machine is stopped.
  • a shut-off valve 68 may be provided in the line 64, with which the inflow of cooling medium to the cooling rollers can be prevented, wherein the shut-off valve 68 is actuated, for example via an electromagnetically operating actuator 106 can be.
  • the line 76 is connected to an inlet 108 via an also operable with an actuator 110 check valve 112.
  • the level of the cooling medium in the vacuum chamber 50 can be determined via a level measuring device, not shown, which may be connected via a line 114 to a motor 116 and its control, which actuates a valve 78, with which the inlet of cooling medium to the vacuum chamber 50th can be adjusted.
  • Such a device for cooling a material web as shown in FIG. 1 may be characterized, for example, by the following values: at a speed of the paper web of 15 m / s and a width of 1460 mm and a weight of the paper web of 90 g / m 2 the temperature of the web from an entrance temperature web of 80 ° C before the chill roll stand 12 to an exit temperature of 35 ° C after the chill roll stand 12 are reduced, wherein the apparatus shown must have a capacity of about 115 kWh.
  • steam is generated by the steam generator at about 10 bar pressure and about 180 ° C, which passes through the two steam jet vacuum nozzles the vacuum chamber 50 about 2.8 1 / min water vapor.
  • the vacuum chamber 50 and the reservoir 74 may each have a volume of about 40 1. In the operation of such a device for cooling a material web, the use of the waste heat from the afterburning of the dryer 2 is sufficient, so that it is possible to dispense with further energy input into the device.
  • the control or regulating device 90 may comprise a display 118, an input unit 120 and a memory unit 122, in which measured values, default values, as well as complete control profiles for predefined operating states of the web-fed rotary printing press can be stored.
  • the control or regulating device 90 may be connected via lines not shown with the individual measuring devices 88, 94, 102 and the various valves or their actuators in such a way that a targeted control or regulation of these components by automatically running programs in the control or 90 can be performed by manual inputs by an operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Treatment Of Fiber Materials (AREA)
EP02007335A 2001-05-15 2002-04-05 Vorrichtung zum Kühlen einer Materialbahn Expired - Lifetime EP1258352B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123489 2001-05-15
DE10123489A DE10123489B4 (de) 2001-05-15 2001-05-15 Vorrichtung zum Kühlen einer Materialbahn

Publications (2)

Publication Number Publication Date
EP1258352A1 EP1258352A1 (de) 2002-11-20
EP1258352B1 true EP1258352B1 (de) 2006-06-28

Family

ID=7684786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007335A Expired - Lifetime EP1258352B1 (de) 2001-05-15 2002-04-05 Vorrichtung zum Kühlen einer Materialbahn

Country Status (6)

Country Link
US (1) US6892642B2 (zh)
EP (1) EP1258352B1 (zh)
JP (1) JP2003028531A (zh)
CN (1) CN1385302A (zh)
AT (1) ATE331620T1 (zh)
DE (2) DE10123489B4 (zh)

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US20040173149A1 (en) * 2003-01-30 2004-09-09 Heidelberger Druckmaschinen Ag Device for applying a liquid mixture to web-shaped printing material
DE10354454B4 (de) * 2003-11-21 2009-11-26 Technotrans Ag Temperiervorrichtung für Druckmaschinen
DE502004012438D1 (de) 2004-01-16 2011-06-09 Uviterno Ag Verfahren zum Bedrucken von Flachmaterial und Vorrichtung zur Durchführung des Verfahrens
DE202004005480U1 (de) * 2004-04-02 2004-06-03 Heidelberger Druckmaschinen Ag Bogendruckmaschine
AU2008230080B2 (en) * 2007-03-23 2012-04-26 Megtec Systems, Inc. Web coating applicator with cooling and material recovery
EP2163386B1 (en) * 2008-09-10 2015-04-08 Goss Contiweb B.V. Device and method for preparing a liquid mixture
JP5434229B2 (ja) * 2009-04-22 2014-03-05 株式会社デンソー 充電制御装置
JP2010284834A (ja) * 2009-06-10 2010-12-24 Nihon Setsubi Kogyo Co Ltd 印刷機における廃熱利用の印刷システム
US20110030232A1 (en) * 2009-07-31 2011-02-10 May Wayne A Binary fluid ejector desiccation system and method of utilizing the same
JP4851584B2 (ja) * 2009-12-22 2012-01-11 中本パックス株式会社 塗布液剤の乾燥方法及び装置
JP5502698B2 (ja) * 2010-10-25 2014-05-28 月島機械株式会社 加熱処理設備及び方法
DE102010062142B4 (de) 2010-11-29 2015-11-12 Koenig & Bauer Ag Druckmaschine mit einem Trocknersystem sowie Verfahren zum Betrieb eines Trockners einer Bedruckstoff be- und/oder verarbeitenden Druckmaschine
DE102010062144B4 (de) 2010-11-29 2015-11-12 Koenig & Bauer Ag Druckmaschine mit mindestens einem einen Heißlufttrockner aufweisenden Trocknersystem sowie Verfahren zum Betreiben eines einen Heißlufttrockner aufweisenden Trocknersystems
DE102010062145B4 (de) 2010-11-29 2015-10-29 Koenig & Bauer Ag Druckmaschine mit mindestens einem einen Heißlufttrockner aufweisenden Trocknersystem sowie Verfahren zum Betrieb einer Druckmaschine mit mindestens einem Heißlufttrockner
JP5751857B2 (ja) * 2011-02-22 2015-07-22 キヤノン株式会社 記録装置
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
CN104036955A (zh) * 2014-06-24 2014-09-10 宁波市江北九方和荣电气有限公司 新型电容器
CN104534726A (zh) * 2014-12-26 2015-04-22 苏州凯锝微电子有限公司 一种切割冷却设备
WO2018048401A1 (en) 2016-09-08 2018-03-15 Hewlett-Packard Development Company, L.P. Airflow for a motor
US10465952B2 (en) * 2017-11-02 2019-11-05 Ford Global Technologies, Llc Vapor injection heat pump and control method

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Also Published As

Publication number Publication date
US6892642B2 (en) 2005-05-17
US20030029342A1 (en) 2003-02-13
EP1258352A1 (de) 2002-11-20
CN1385302A (zh) 2002-12-18
JP2003028531A (ja) 2003-01-29
DE10123489A1 (de) 2002-11-21
ATE331620T1 (de) 2006-07-15
DE10123489B4 (de) 2009-04-02
DE50207357D1 (de) 2006-08-10

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