EP0962591A2 - Walze, Kalander und Verfahren zum Betrieb einer Walze - Google Patents
Walze, Kalander und Verfahren zum Betrieb einer Walze Download PDFInfo
- Publication number
- EP0962591A2 EP0962591A2 EP99110246A EP99110246A EP0962591A2 EP 0962591 A2 EP0962591 A2 EP 0962591A2 EP 99110246 A EP99110246 A EP 99110246A EP 99110246 A EP99110246 A EP 99110246A EP 0962591 A2 EP0962591 A2 EP 0962591A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- temperature
- roll
- heat transfer
- transfer medium
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0233—Soft rolls
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0253—Heating or cooling the rolls; Regulating the temperature
- D21G1/0286—Regulating the axial or circumferential temperature profile of the roll
Definitions
- the invention relates to a roller with a core, the has an elastic covering that extends over a Working width extends, and with roll neck on the end faces of the core.
- the invention relates also a calender with several such rolls.
- the invention relates to a method for Operation of a roller with a core that has an elastic Has covering that spans a working width extends, and with roll journals at the axial ends the roller.
- a roller of the type mentioned above is usually used as a center roll in a roll stack of a calender used. It is also called soft or elastic Calender roll referred to because the surface is a surface the roller creates that to a certain extent is compliant. Such a calender roll acts in usually with a "hard” roller to make one Paper or another material web to satin.
- the hard roller is usually heated, so that the paper web in the between the soft and the hard roll formed nip or nip with increased Pressure and elevated temperature can.
- the elastic covering serves primarily here for uniform compression of the paper web.
- the working width of such a calender roll corresponds essentially the width of the treated Material web. Outside of the working width, the Taper the base. This taper extends order of magnitude over an axial length in the area from about 20 to 100 mm. This is supposed to prevent that the one not covered by a paper web Pad comes into contact with the counter roller and is damaged becomes. For further consideration only the work area is used of the covering is referred to as the working width.
- rollers in the Operation may be damaged because of the tearing or breaks. This damage also occurs with such coverings on which is a temperature resistance or resistance that can withstand the temperatures during operation ought to.
- the invention has for its object the stress to reduce the topping.
- the temperature control device a flow path for a heat transfer medium on.
- the heat transfer medium can heat in the roller is transported in or out of it.
- the pin areas of the roller thermally different act as the bale area.
- Working with Heat transfer media are known per se, for example of cooling or heating rollers. But these usually have no elastic covering. If elastic rollers have been tempered so far, this has been done by air cooling of the surface from the outside. In contrast to the known cooling and heating rollers, it is in the invention Solution but necessary, the temperature of the heat transfer medium very precisely not only to the temperature, but the temperature and load distribution the roller and the other environmental conditions adapt.
- a displacer is preferably arranged in the roller, which forms an annulus towards the core.
- the volume that comes with the heat transfer medium must be filled, downsized.
- the roller comes with a smaller amount of the heat transfer medium, so that the moment of inertia can only be tolerated Dimensions changes.
- it is with a displacer possible not only to specify certain flow paths, but also determined these flow paths To impart flow characteristics that over themselves can change the axial length of the roller.
- the core can be a Plurality of uniformly distributed in the circumferential direction, peripheral axially essentially parallel Have holes. Also through these holes the heat transfer medium can be conducted.
- Peripheral Bores have the against a displacer Advantage that the temperature is closer to the surface can influence the roller and thus the heat transfer medium can act faster and more directly.
- a displacer has the advantage that it is already in existing elastic rollers, which are called pin rollers, i.e. with a tubular body, are upgraded can be.
- a temperature control device is advantageously provided, which the temperature of the heat transfer medium depending of the line load and the roller temperature sets.
- a regulation is provided which is used as input variables one actually on the roller surface measured temperature and one actually on the roller measured line load.
- you can Temperature and the line load with sufficient accuracy calculate (for example from a known Flow temperature of the heated counter roll and the Printing on the top and bottom roller and the roller weights of the calender) and based on the calculated Set the temperature of the heat transfer medium. This temperature then also flows, if necessary iteratively, in the calculation.
- the temperature control device must work to within a few degrees.
- the temperature difference between Entry and exit of the heat transfer medium is at most 3 ° C. This has two advantages. On the one hand this ensures that the two axial Ends of the roller are treated largely the same. To the others will see that it is not a task of the heat transfer medium is to heat the roller itself or to cool. Of course it is permissible if that Heat transfer medium removes some heat from the roller. The main task, however, is the thermal and differences in diameter not compensated by the line load equalize or compensate again, i.e. the diameter distribution over the axial Length of the roller, at least over the axial length of the To level the surface.
- the pin areas Preferably there is a larger one in the pin areas Heat exchanger surface available for the heat transfer medium than in the bale area. So that the heat transfer medium a larger amount of heat in the cone areas give to the cones or take up from there than in Bale area. But is especially in the cone areas the greatest need for thermal correction.
- the flow rate can of the heat transfer medium in the bale area be larger than in the cone areas. So that has Heat transfer medium in the bale area less time around heat absorb or give off heat. The thermal influence the roller remains in the bale area smaller.
- the tempering device the cone areas that free of topping, cools from the inside.
- This configuration is preferably used when the diameter changes due to the caused by the line load Shell deformations are greater than thermal conditional deformations.
- the cooling of those no longer covered by the covering Areas of the cone brings nothing because of it It is irrelevant whether there are changes in diameter adjust or not.
- the temperature of the heat transfer medium between the temperature the cone areas and the temperature of the bale area lies. If you look at a balance sheet, then this measure is pointless.
- the roller becomes warm neither fed nor discharged. Basically it is the temperature of the heat transfer medium is about the same like the temperature of the roller. With this measure lets but achieve that the cones are heated and the Bales are cooled. This leads to an increase in diameter in the cone areas and one Diameter reduction in the bale area, so that overall an equalization of the diameter distribution results.
- small amounts of heat to the roller or be dissipated by her This cooling or heating but could certainly be done in a different way with less Do the effort. Decisive for the way it works this configuration is actually that a heat transfer only to the cones and only from Bale area is done away.
- each roller has its own temperature control device having.
- One calender has several superimposed soft or elastic roller on, between which, if necessary, hard, heated Rollers can be arranged. This can be both the temperature distribution of the rollers as well as the pressure load or line load distribution from top to bottom to change.
- the line load in every nip a decisive influence on the Deformation and thus the need for thermal Correction, one sees advantageously for each roller has its own temperature control device.
- Each The roller is therefore corrected individually.
- the roller is preferably charged with a heat transfer medium, whose inlet temperature between the Temperature at the roller ends and the temperature in the axial roller center.
- a heat transfer medium whose inlet temperature between the Temperature at the roller ends and the temperature in the axial roller center. This is a particularly simple one Design to with the help of a single heat transfer medium to heat the roller end and the roller center to cool.
- the roll neck can be stronger than cool the roller center.
- a Removed heat from the roller but it is not a chill roll.
- the process temperature should be in remain essentially. The cooling serves the Uniformity of diameter of the roller.
- Fig. 1 shows a roller 1 with a core 2, which as Tube is formed and encloses a cavity 3.
- a core 2 which as Tube is formed and encloses a cavity 3.
- an elastic one Covering 4 arranged, which is shown exaggerated thick in Fig. 1 is.
- the covering 4 does not extend over the entire axial length of the roller 1, but over a working width, that of the width of a paper web to be treated corresponds.
- the roller 1 acts with a schematically shown Counter roller 5 together, which is designed as a heating roller is.
- the paper web is through a nip 6 or nip passed between the two rollers 1, 5 and in this Nip 6 with increased pressure and temperature acted upon.
- the covering 4 leaves at the two axial ends of the roller 1 pin areas 7, 8 free, i.e. not covered.
- a The area between the pin areas 7, 8 is called the ball area 9 designated.
- a displacer 10 is located in the cavity 3, which forms an annular gap 11 with the core 2.
- To the End faces of the displacer are distribution spaces 12, 13 arranged.
- In the distribution space 12 there are heat conducting plates 14 shown. Corresponding heat conducting surfaces can also be arranged in the distribution space 13 if this is necessary.
- peripheral bores can also be used be provided in core 2 (not shown).
- the cavity 3 is at both ends by roll neck 15, 16 closed.
- the roll neck 15, 16 each have a channel 17, 18 for a heat transfer medium, for example water.
- the channels 17, 18 are through a ring line 19 connected to one another Pump 20 and a heat exchanger 21 are arranged.
- Either the pump 20 and the heat exchanger 21 are connected to a control unit 22 and are from this controlled.
- the volume flow of the heat transfer medium can also be kept constant by the roller 1 can, is the connection of the control unit to the pump 20th only shown in dashed lines. In this case, the Pump 20 with constant volume.
- the control unit 22 can be equipped with Temperature sensors 23-25 may be connected.
- the temperature sensors 23, 24 determine the temperature of the roller 1 in the pin areas 7, 8.
- the temperature sensor 25 determines the temperature of the roller 1 in the bale area.
- the force profiles in Nip 6 are those in the calender prevailing forces caused by the pressures on upper and Bottom roller and the roller weights are generated, determinable. At this point it should be emphasized that in many cases these sensors can be omitted if the temperature of the surroundings of the roller, in particular the Temperature of the counter roller or, if several counter rollers are present, the temperature of the counter rolls and / or paper rolls, and the set roll loads are known. From this information can be the temperature distribution and also the line load distribution and the resulting deformations of the Calculate roller 1. Since also through the heat transfer medium caused local temperature changes in the temperature profile the calculation can be iterative respectively.
- the control unit the heat exchanger 21 so that by the Roller 1 flowing heat transfer medium, for example Water that has a clearly defined temperature.
- the Heat transfer medium is neither used for heating nor for cooling the roller 1, i.e. the process temperature the surface of the covering 4 should practically not be changed become. At most, a smaller one is permitted Dissipate heat from the roller 1.
- the temperature difference for example between the inlet and outlet Do not exceed 3 ° C.
- Fig. 2 now shows various curves with which the Temperature of the heat transfer medium can determine that are available at the outlet of the heat exchanger 21 should.
- Length 1 of roller 1 is to the right plotted in mm. The deviation is up and down of the diameter from a target diameter 0 in ⁇ m applied.
- An arrow 28 shows which one Area of the paper web, i.e. what extension the covering 4 has in the axial direction.
- a curve A shows which diameter deviations are generated by thermal influences, i.e. by the temperatures prevailing in operation.
- thermal influences i.e. by the temperatures prevailing in operation.
- Such You can use known calculation methods, such as curve using the finite element method.
- a curve B shows changes in the diameter of the roller 1 over the axial length l caused by line loads are. Contrary to the thermal effects, which reduces the diameter towards the axial end, cause the line loads to reduce the Diameter towards the axial center, in reverse, an increase in the diameter to the axial End.
- a curve C shows the corresponding deviations for the counter roller 5, in the present case as a heating roller is trained.
- a curve D shows the sum of the diameter deviations, i.e. the sum of the diameter enlargements of the Rollers 1 and 5, which are caused by line loads, minus the reduction in diameter of roller 1, which is thermal. You can see from this that in the edge area of the covering a "diameter error" of just under 30 ⁇ m occurs, which is only relatively wide inside, i.e. relatively far towards the axial Center of the roller, compensated to zero.
- the rollers are not with the same pressure on each other as in the axial center.
- the line load then concentrates at the edge of the areas, in which the two rollers 1, 5 "properly" lie together. There is a lot of damage observe.
- a measure to make the cones use a larger amount of heat to be fed as the bale area 9 through the heat conducting plates 14 formed. This means that there is a larger heat exchanger surface in roller 1 only available there where there is actually a higher amount of heat to the roller 1 to be delivered.
- the Annular gap 11 in the bale area has a smaller flow cross section than has the distribution rooms, for example 12, 13.
- the heat transfer medium flows through the bale area 9, 10 faster and can accordingly not so good for heat exchange contribute.
- these measures are only examples. Of course, you can also take other measures consider the pin regions 7, 8 differently temper as the bale area 9, and still that to use the same heat transfer medium.
- heated rollers 27 are arranged, which correspond to the roller 5 from FIG. 1 can. It can also be seen that an upper roller 28th and a lower roller 29 provided with pressure sensors 30, 31 are responsible for the generation of the line loads are. On the top roller 28 and the bottom roller 29 you can apply the forces with pressure transducers Measure 32 and then the line load distribution calculate in the individual nips.
- the heating rollers 27 is a heating medium via lines 33 supplied, for example water or steam.
- the temperature this heating medium can with the help of temperature sensors 34 can be determined. Because the temperature of the Heating rollers 27 in operation from the flow temperature of the Depends on the heating medium, it is sufficient to determine the flow temperature using the temperature sensors 34 to the necessary information for the calculation of the Temperature distribution in the rollers 1 to win. Here it is also sufficient that for the calculation of the Temperature profile in a roller 1 the temperatures of the adjacent heating rollers 27 is taken into account.
Landscapes
- Paper (AREA)
- Treatment Of Fiber Materials (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
- Fig. 1
- eine schematische Ansicht einer elastischen Walze,
- Fig. 2
- eine schematische Darstellung verschiedener Kurven und
- Fig. 3
- einen Kalander mit mehreren elastischen Walzen.
Claims (15)
- Walze, insbesondere für einen Papierkalander, mit einem Kern, der einen elastischen Belag aufweist, der sich über eine Arbeitsbreite erstreckt, und mit Walzenzapfen an den stirnseitigen Enden des Kerns, dadurch gekennzeichnet, daß eine Temperiereinrichtung (19-22) vorgesehen ist, die die Zapfenbereiche (7, 8) thermisch anders beaufschlagt als einen Ballenbereich (9) zwischen den Zapfenbereichen (7, 8).
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß die Temperiereinrichtung einen Strömungspfad (17-19) für ein Wärmeträgermedium aufweist.
- Walze nach Anspruch 2, dadurch gekennzeichnet, daß in der Walze (1) eine Verdrängerkörper (10) angeordnet ist, der einen Ringraum (11) zum Kern (2) hin bildet.
- Walze nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Kern (2) eine Vielzahl von in Umfangsrichtung gleichförmig verteilten, im wesentlichen achsparallel verlaufenden peripheren Bohrungen aufweist.
- Walze nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß eine Temperatursteuereinrichtung (22) vorgesehen ist, die die Temperatur des Wärmeträgermediums in Abhängigkeit von der Streckenlast und der Walzentemperatur einstellt.
- Walze nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Temperaturdifferenz zwischen Eintritt und Austritt des Wärmeträgermediums höchstens 3°C beträgt.
- Walze nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß in den Zapfenbereichen (7, 8) eine größere Wärmetauscherfläche (14) für das Wärmeträgermedium steht zur Verfügung als im Ballenbereich (9).
- Walze nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die Strömungsgeschwindigkeit des Wärmeträgermediums im Ballenbereich (9) größer als in den Zapfenbereichen (7, 8) ist.
- Walze nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die Temperiereinrichtung (19-22) die Zapfenbereiche (7, 8), die frei von Belag (4) sind, von innen kühlt.
- Walze nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Temperatur des Wärmeträgermediums zwischen der Temperatur der Zapfenbereiche (7, 8)und der Temperatur des Ballenbereichs (9) liegt.
- Kalander mit mehreren Walzen nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß jede Walze eine eigene Temperiereinrichtung (19-22) aufweist.
- Verfahren zum Betrieb einer Walze mit einem Kern, der einen elastischen Belag aufweist, der sich über eine Arbeitsbreite erstreckt, und mit Walzenzapfen an den axialen Enden der Walze, dadurch gekennzeichnet, daß man einen Temperaturverlauf in Axialrichtung einstellt, der von der Temperatur in der Umgebung der Walze und einer auf sie wirkenden Streckenlast abhängt.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß man die Walzenzapfen beheizt und den Ballen beheizt.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß man die Walze mit einem Wärmeträgermedium beschickt, dessen Eingangstemperatur zwischen der Temperatur an den Walzenenden und der Temperatur in der axialen Walzenmitte liegt.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß man die Walzenzapfen stärker als die Walzenmitte kühlen kann.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19824542A DE19824542B4 (de) | 1998-06-03 | 1998-06-03 | Walze, Kalander und Verfahren zum Betrieb einer Walze |
DE19824542 | 1998-06-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0962591A2 true EP0962591A2 (de) | 1999-12-08 |
EP0962591A3 EP0962591A3 (de) | 2000-10-18 |
EP0962591B1 EP0962591B1 (de) | 2004-09-01 |
Family
ID=7869622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99110246A Expired - Lifetime EP0962591B1 (de) | 1998-06-03 | 1999-05-27 | Walze, Kalander und Verfahren zum Betrieb einer Walze |
Country Status (5)
Country | Link |
---|---|
US (1) | US6209451B1 (de) |
EP (1) | EP0962591B1 (de) |
AT (1) | ATE275218T1 (de) |
CA (1) | CA2273448C (de) |
DE (2) | DE19824542B4 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1529878A1 (de) * | 2003-11-05 | 2005-05-11 | Voith Paper Patent GmbH | Kalanderwalze |
US7614122B2 (en) | 2005-06-24 | 2009-11-10 | Truetzschler Gmbh & Co. Kg | Apparatus on a spinning preparation machine, especially a flat card, roller card, cleaner or the like, with a cooling system |
EP4249676A1 (de) * | 2022-03-23 | 2023-09-27 | Voith Patent GmbH | Wärmeübertragungsanlage und verfahren |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6983684B2 (en) * | 2002-01-22 | 2006-01-10 | Huber Engineered Woods Llc | Modified high-temperature pressing apparatus |
DE10237632B4 (de) * | 2002-08-16 | 2004-11-11 | Voith Paper Patent Gmbh | Temperierbare Walze und Verfahren zu ihrem Betrieb |
JP4657096B2 (ja) * | 2005-12-21 | 2011-03-23 | トクデン株式会社 | 熱媒体通流ローラ装置 |
US20080093026A1 (en) * | 2006-10-24 | 2008-04-24 | Niko Naumann | Device for pressing a tape |
DE102012224301A1 (de) | 2012-12-21 | 2014-06-26 | Robert Bosch Gmbh | Kalandriervorrichtung und Verfahren zu deren Betrieb |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3014891A1 (de) * | 1980-04-17 | 1981-10-22 | Schwäbische Hüttenwerke GmbH, 7080 Aalen | Vorrichtung mit einer mittels eines waermetraegers temperaturgeregelten hohlwalze |
US4459726A (en) * | 1981-12-21 | 1984-07-17 | Usm Corporation | Temperature control for shell type rolls |
DE3814794A1 (de) * | 1988-05-02 | 1989-11-16 | Kleinewefers Gmbh | Beheizbare walze |
DE3838852C1 (de) * | 1988-11-17 | 1990-05-23 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
DE4111911A1 (de) * | 1991-04-12 | 1992-10-15 | Voith Gmbh J M | Walze |
DE4202917C1 (de) * | 1992-02-01 | 1993-08-12 | Kleinewefers Gmbh, 4150 Krefeld, De | |
DE4213688A1 (de) * | 1992-04-25 | 1992-11-05 | Voith Gmbh J M | Verfahren und einrichtung zur kuehlung einer rotierenden walze durch kuehlmittelverdampfung |
DE9206265U1 (de) * | 1992-05-09 | 1992-07-23 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
DE4223359A1 (de) * | 1992-07-16 | 1994-01-20 | Escher Wyss Gmbh | Heiz- oder Kühlwalze |
DE4300541A1 (de) * | 1993-01-12 | 1994-08-11 | Walzen Irle Gmbh | Temperierbare Walze |
DE4343172C1 (de) * | 1993-12-17 | 1995-01-12 | Kleinewefers Gmbh | Beheizbare Walze |
DE4410675C2 (de) * | 1994-03-26 | 1999-09-30 | Kleinewefers Gmbh | Verfahren zum Aufheizen einer beheizbaren Walze für Kalander oder Glättwerke und beheizbare Walze zur Durchführung dieses Verfahrens |
DE19513500C2 (de) * | 1995-04-10 | 1998-05-14 | Schwaebische Huettenwerke Gmbh | Walze mit einstellbarer Form |
FI100481B (fi) | 1995-10-23 | 1997-12-15 | Valmet Corp | Menetelmä taipumakompensoidun telan liukulaakeroidun telavaipan päätya lueiden lämpötilan säätämiseksi |
DE29518424U1 (de) * | 1995-11-21 | 1996-03-14 | Voith Sulzer Finishing Gmbh | Kalander in einer Papier- oder Streichmaschine |
US5768985A (en) * | 1995-12-11 | 1998-06-23 | Valmet Corporation | Method for preventing vibrations of a roll set |
FI2640U1 (fi) | 1996-03-22 | 1996-11-22 | Valmet Corp | Tela, erityisesti soft- tai superkalanterin tela |
US5984848A (en) * | 1997-01-13 | 1999-11-16 | American Roller Company | Heated roller with integral heat pipe |
-
1998
- 1998-06-03 DE DE19824542A patent/DE19824542B4/de not_active Expired - Fee Related
-
1999
- 1999-05-26 US US09/318,752 patent/US6209451B1/en not_active Expired - Fee Related
- 1999-05-27 AT AT99110246T patent/ATE275218T1/de active
- 1999-05-27 DE DE59910375T patent/DE59910375D1/de not_active Expired - Lifetime
- 1999-05-27 EP EP99110246A patent/EP0962591B1/de not_active Expired - Lifetime
- 1999-06-02 CA CA002273448A patent/CA2273448C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1529878A1 (de) * | 2003-11-05 | 2005-05-11 | Voith Paper Patent GmbH | Kalanderwalze |
US7614122B2 (en) | 2005-06-24 | 2009-11-10 | Truetzschler Gmbh & Co. Kg | Apparatus on a spinning preparation machine, especially a flat card, roller card, cleaner or the like, with a cooling system |
EP4249676A1 (de) * | 2022-03-23 | 2023-09-27 | Voith Patent GmbH | Wärmeübertragungsanlage und verfahren |
Also Published As
Publication number | Publication date |
---|---|
CA2273448C (en) | 2004-03-16 |
DE19824542A1 (de) | 1999-12-30 |
DE59910375D1 (de) | 2004-10-07 |
US6209451B1 (en) | 2001-04-03 |
DE19824542B4 (de) | 2005-07-14 |
ATE275218T1 (de) | 2004-09-15 |
CA2273448A1 (en) | 1999-12-03 |
EP0962591B1 (de) | 2004-09-01 |
EP0962591A3 (de) | 2000-10-18 |
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