EP0735185B1 - Kalander für die zweiseitige Papierbehandlung - Google Patents
Kalander für die zweiseitige Papierbehandlung Download PDFInfo
- Publication number
- EP0735185B1 EP0735185B1 EP96104020A EP96104020A EP0735185B1 EP 0735185 B1 EP0735185 B1 EP 0735185B1 EP 96104020 A EP96104020 A EP 96104020A EP 96104020 A EP96104020 A EP 96104020A EP 0735185 B1 EP0735185 B1 EP 0735185B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- calender according
- rolls
- soft
- roller
- 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
Links
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 238000003490 calendering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- CYJRNFFLTBEQSQ-UHFFFAOYSA-N 8-(3-methyl-1-benzothiophen-5-yl)-N-(4-methylsulfonylpyridin-3-yl)quinoxalin-6-amine Chemical compound CS(=O)(=O)C1=C(C=NC=C1)NC=1C=C2N=CC=NC2=C(C=1)C=1C=CC2=C(C(=CS2)C)C=1 CYJRNFFLTBEQSQ-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
Definitions
- the invention relates to a calender for the double-sided paper treatment with a stack of rollers, which is a hard top roller, a hard bottom roller and in between further hard and soft rollers as well between a hard and a soft roller formed working column and one between two soft ones Rolls formed alternating gap and by forces acting on the stack ends in the stacking direction is resilient.
- Such calenders are for example from the prospectus "The new super calender concepts" from Sulzer Papertec Krefeld GmbH from May 1994. You serve to satin coated and uncoated papers, for example printing paper or silicone base paper.
- Metal rollers are referred to as “hard” rollers a smooth and hard surface that essentially are responsible for the smoothness and shine.
- Soft” rolls are rolls with a elastic or soft surface that essentially ensure even compaction. The Alternating gap is required so that both sides of the Paper web experience an approximately even treatment. It is common to use a calender with 12 to 16 rolls use, with the alternating gap in the lower Half of the stack is located.
- EP 0 230 563 A1 describes a positioning device known from roll surfaces, in which a roll stack is provided with seven rollers, of which the Top roller, the bottom roller and the center roller as a bending adjustment roller are trained. The remaining rollers are mounted on levers. Hydraulic servomotors that at the levers or at the ends of the bending adjustment rollers attack, serve to raise and lower the roller surface, to hold in the desired position and by the Relieve the effects of overhanging weights. Soft rollers and working and formed with their help Alternating column to eliminate the differences both sides of the paper web are not mentioned.
- the invention has for its object a calender of the type described at the outset, to a large extent the same satin results for a particular one Paper type, but a smaller one Construction height and its manufacturing and operating costs are lower.
- the stack has 8 rollers, of which the two middle rollers form the alternating gap that one of the Intermediate rolls a bending adjustment roll with jacket stroke is whose sheath is resilient due to an upper Support device and a lower pressure-bearing support device on a carrier penetrating the coat is supported, and that by the upper support device supporting force exerted on the jacket is greater than that exerted by the lower support Supporting force.
- the number of working gaps is above the exchange gap equal to the number of Working column below the alternating gap and thus less than with the well-known super calender. Nevertheless the same calendering result as with a 12-roll calender achieved because in all working columns relatively large line load to be worked can.
- the middle bending adjustment roller causes that the above the alternating gap on the hard Rolling paper side a similar treatment learns how the below the exchange gap to the hard rolls of paper. Both in the bottom Working gap of the bottom half of the stack too in the bottom working gap of the top half of the stack can work with the maximum permissible compressive stress become. The compressive stresses can also be correspondingly large in the columns above.
- the three nips above the alternating nip at 8-roll calenders achieve the same result as in the 12-roll calender, the first seven working gaps. Because a bending adjustment roller with a jacket stroke is used it can be used in a stack whose Rolling in the usual way, for example by lowering the lower roller, can be separated from each other.
- the calender Since the calender has a lower overall height, needed one also lower buildings, what the set-up costs significantly lowers. Furthermore, the calender is due the lower number of rollers in both the manufacture and inexpensive to operate.
- one of the two middle rollers is designed as a bending adjustment roller.
- the decoupling of the upper and lower load systems is special big because the coat of the one covered Bending adjustment roller is easier to deform. Moreover the different loads affect each half of the stack.
- the calendering performance can be improved even more take into account that the sum of the products from dwell time and medium compressive stress in the working columns above the alternating gap 80% to 120% of the Total of the products mentioned in the working columns below of the exchange gap. Because dwell time and Compressive stress are two key factors in the Paper deformation.
- rollers be light in weight. This happens in the case of the hard rollers in that they have the smallest possible Diameter and the thinnest possible wall thickness exhibit. With the soft rollers one should instead the compact and heavy rolls with paper cover use lighter structures.
- the soft Rolls contain voids.
- the soft Rolls contain voids.
- hollow tubes provided with a cover are considered.
- the soft roller a jacket made of fiber-reinforced plastic, such as epoxy resin having.
- fiber reinforcement in particular With carbon fibers, stability and low can be Combine weight with each other.
- the upper and / or lower rollers can advantageously be heated. It is therefore already in the first and also in the last gap Heat can be supplied on both sides of the paper web Offers correction options.
- top and / or bottom roller is a bend adjustment roller. Deflection control allows the line load over the Keep the width of the paper web constant so as to to achieve a very even satin finish.
- the illustrated calender 1 has a roll stack which consists of eight rollers, namely one heatable, deflection-controllable hard top roller 2, a soft roller 3, a heatable hard roller 4, a soft roller 5, a deflection controllable soft roller 6, a heatable hard roller 7, a soft roller 8 and a heatable, deflection controllable hard bottom roller 9.
- a paper web 17 is fed from a paper machine, passes under the guidance of idlers 18 the working column 10 to 12, the alternating gap 16 and the working column 13 to 15, whereupon it in a winding device is wound up.
- the top three Working columns 10 to 12 is the paper web with the one side, in the three lower working columns 13 to 15 with the other side on the hard rollers, see above that the desired surface structure on both sides, for example Gloss or smoothness is achieved.
- Top roller 2 and bottom roller 9 are as bending adjustment rollers trained, in which the roller shell 19 by a series of support elements 20 on a non-rotatable Carrier 21 are supported.
- the soft roller 6 is also formed as a bending adjustment roller, the jacket 22 via an upper support device 23, formed by a series of support elements, and a lower support device 24, formed by a series of support elements, on a non-rotatable and stationary support 25 is supported.
- This roller 6 is designed with a jacket stroke, i.e. the jacket 22 as a whole is relative to Carrier 25 vertically adjustable.
- Such bend adjustment rollers are known, for example in the form of NIPCO or HYDREIN rollers.
- the support elements can also replaced by other known support devices become.
- the remaining rollers 3, 4, 5, 7 and 8 are with their journals mounted on levers 26 which are fixed to the frame Pivots 27 are pivotable.
- a compensator 28 the Effect of the overhanging weights, such as the Guide roller 18, compensated and thereby the effective weight the associated roller keeps small.
- the compensators 28 can be loaded in any way, for example by a fluid pressure or a Feather.
- the carrier can be used to separate the rollers of the stack 1 the lower roller 9 is lowered by means of a lifting cylinder 29 become. This lowers the levers 26 stored rollers 3, 4, 5, 6, 8 until the levers on an unillustrated attack that occurs in the compensator may be involved, while the soft roller 6 drops until the jacket stroke by one internal attack has ended. If between everyone Rolls should give a gap of 4 mm, for example, the roller 3 by 4 mm, the roller 4 by 8 mm, the roller 5 by 12 mm and the jacket 22 of the roller 6 by 16 mm can be moved down.
- the soft rollers for example 3, have a support tube 30 with a cavity 31. There is a on the support tube Plastic sheath 32 arranged, for example fiber-reinforced epoxy resin can exist. Such soft roller is much lighter than a normal one Roller with a cover made of fiber material.
- the top roller 2 has one for this purpose Induction heating device 33.
- the heating energy can also be supplied in other ways, for example by electrical resistance heating, by radiant heating, with the help of a heat transfer medium and the like.
- a control unit 34 coordinates the individual parameters paper web treatment. So, besides the heating energy H1 to H4 set the force P with which the top roller 2 is pressed down, the lower roller 9 is expediently kept stationary. The load can also be done in the opposite direction, the Force P acts on the lower roller 9 and the upper roller 2 is stationary.
- the support elements in the rollers 2, 6 and 9 are pressures pl, individually or in zones, p2, p3 and p4 are fed to all three bending adjustment rollers ensure that the length of the rollers there is an even compressive stress. Furthermore the support devices 23 and 24 of the roller 6 so controlled that the force acting upwards is something is greater than the downward force.
- the line load f5 is the most effective Weight of the roller 7 and the line load f6 in the working gap 15 around the effective weight of the rollers 7 and 8 greater.
- the aim is that the total of the line loads f1 + f2 + f3 of the top working column 10, 11 and 12 at 80% to 120%, preferably about 100%, of Sum of the line loads f4 + f5 + f6 of the three lowest Working column 13, 14 and 15 lies.
- the top total should be 80% to 120% of the lower total.
- the treatment is in the three first working columns 10, 11 and 12 of the treatment in the last three working columns 13, 14 and 15 so strongly approximated that the satin effect on both sides the paper web is largely the same. Perhaps Any necessary corrections can be made with the help of different Heating of the heated rollers 2, 4, 7 and 9 can be made.
- the temperature is only slightly above the lower limit, for example 110 ° C., and if the compressive stress is only slightly above the lower limit, for example 50 N / mm 2 . Compared to a 12-roll calender, slight increases in thermal and mechanical energy are therefore sufficient to achieve the same calendering results with an 8-roll calender.
Landscapes
- Paper (AREA)
Description
- Fig. 1
- eine schematische Darstellung eines erfindungsgemäßen Kalanders und
- Fig. 2
- einen Schnitt durch eine weiche Walze.
Claims (12)
- Kalander für die zweiseitige Papierbehandlung mit einem Walzenstapel, der eine harte Oberwalze, eine harte Unterwalze und dazwischen weitere harte und weiche Walzen sowie jeweils zwischen einer harten und einer weichen Walze gebildete Arbeitsspalte und einen zwischen zwei weichen Walzen gebildeten Wechselspalt aufweist und der durch an den Stapelenden angreifende Kräfte in Stapelrichtung belastbar ist, dadurch gekennzeichnet, daß der Stapel (1) 8 Walzen (2 bis 9) aufweist, von denen die beiden mittleren Walzen (5, 6) den Wechselspalt (16) bilden, daß eine der Zwischenwalzen (6) eine Biegeeinstellwalze mit Mantelhub ist, deren Mantel (22) durch eine obere druckbelastbare Stützvorrichtung (23) und eine untere druckbelastbare Stützvorrichtung (24) auf einem den Mantel durchsetzenden Träger (25) abgestützt ist, und daß die von der oberen Stützvorrichtung (23) auf den Mantel (22) ausgeübte Stützkraft größer ist als die von der unteren Stützvorrichtung (24) ausgeübten Stützkraft.
- Kalander nach Anspruch 1, dadurch gekennzeichnet, daß eine der beiden mittleren Walzen (5, 6) als Biegeeinstellwalze ausgebildet ist.
- Kalander nach Anspruch 2, dadurch gekennzeichnet, daß die fünfte Walze (6) von oben als Biegeeinstellwalze ausgebildet ist.
- Kalander nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Zwischenwalzen (2, 3, 4, 5, 7, 8) mit Ausnahme der Biegeeinstellwalze (6) an Hebeln gelagert sind, die durch Kompensatoren (28) zum Ausgleich überhängender Gewichte belastet sind.
- Kalander nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Summe der Streckenlasten (f1 + f2 + f3) in den Arbeitsspalten (10 bis 12) oberhalb des Wechselspalts (16) 80% bis 120% der Summe der Streckenlasten (f4 + f5 + f6) der Arbeitsspalte (13 bis 15) unterhalb des Wechselspalts beträgt.
- Kalander nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Summe der Produkte aus Verweilzeit und mittlerer Druckspannung in den Arbeitsspalten (10, 11, 12) oberhalb des Wechselspalts (16) 80 % bis 120% der Summe der genannten Produkte in den Arbeitsspalten (13, 14, 15) unterhalb des Wechselspalts (16) beträgt.
- Kalander nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die weichen Walzen (3) Hohlräume (31) enthalten.
- Kalander nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die weiche Walze (3) einen Kunststoffmantel (32) aufweist.
- Kalander nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die weiche Walze (3) einen Mantel (32) aus faserverstärktem Kunststoff aufweist.
- Kalander nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß zumindest eine harte Walze (2, 4, 7, 9) beheizbar ist.
- Kalander nach Anspruch 10, dadurch gekennzeichnet, daß die Ober- und/oder Unterwalze (2, 9) beheizbar ist.
- Kalander nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Ober- und/oder Unterwalze (2, 9) ebenfalls eine Biegeeinstellwalze ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19511145 | 1995-03-27 | ||
DE19511145A DE19511145C2 (de) | 1995-03-27 | 1995-03-27 | Kalander für die zweiseitige Papierbehandlung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0735185A2 EP0735185A2 (de) | 1996-10-02 |
EP0735185A3 EP0735185A3 (de) | 1998-05-06 |
EP0735185B1 true EP0735185B1 (de) | 2001-07-11 |
Family
ID=7757841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96104020A Expired - Lifetime EP0735185B1 (de) | 1995-03-27 | 1996-03-14 | Kalander für die zweiseitige Papierbehandlung |
Country Status (3)
Country | Link |
---|---|
US (1) | US5662037A (de) |
EP (1) | EP0735185B1 (de) |
DE (2) | DE19511145C2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7340998B2 (en) | 2002-06-06 | 2008-03-11 | Metso Paper, Inc. | Arrangement for closing roll nips |
DE102008040247A1 (de) | 2008-07-08 | 2010-01-14 | Voith Patent Gmbh | Bandkalender |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI107626B (fi) * | 1996-05-06 | 2001-09-14 | Metso Paper Inc | Menetelmä kalanterin, etenkin superkalanterin telaston pika-avauksessa ja hydraulijärjestelmä kalanterin, etenkin superkalanterin telastoa varten |
DE19631056C2 (de) * | 1996-08-01 | 2000-08-17 | Voith Sulzer Finishing Gmbh | Kalander |
DE19633671C2 (de) * | 1996-08-21 | 1999-03-11 | Voith Sulzer Finishing Gmbh | Kalander |
ATE315126T1 (de) * | 1997-05-07 | 2006-02-15 | Metso Paper Inc | Verfahren und vorrichtung zur berechnung und steuerung der linearen lastverteilung in einem mehrspalt-kalander und mehrspalt-kalander |
DE19723519A1 (de) * | 1997-06-05 | 1998-12-10 | Kuesters Eduard Maschf | Kalander |
DE19757472C2 (de) * | 1997-12-23 | 2000-09-07 | Voith Sulzer Papiermasch Gmbh | Kalander für eine Bahn, insbesondere Papierbahn |
DE19800331A1 (de) * | 1998-01-08 | 1999-07-15 | Voith Sulzer Papiertech Patent | Papierkalander und Verfahren zu dessen Betrieb |
US5938895A (en) * | 1998-04-02 | 1999-08-17 | Valmet Corporation | Calender having moisture profile control |
DE19820087B4 (de) * | 1998-05-06 | 2005-06-23 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Kalander für die Behandlung einer Warenbahn |
DE19832064C2 (de) | 1998-07-16 | 2000-09-07 | Voith Sulzer Papiertech Patent | Kalander für Bahnen aus Papier oder ähnlichem Material |
DE19832067B4 (de) * | 1998-07-16 | 2005-04-21 | Voith Paper Patent Gmbh | Kalander für Bahnen aus Papier oder ähnlichem Material |
DE19832066C2 (de) | 1998-07-16 | 2000-06-08 | Voith Sulzer Papiertech Patent | Kalander für Bahnen aus Papier oder ähnlichem Material |
AU6845000A (en) * | 1999-08-27 | 2001-03-26 | Metso Paper Inc. | Shoe roll |
DE19945780C1 (de) * | 1999-09-24 | 2001-01-18 | Voith Paper Patent Gmbh | Kalander |
FI114405B (fi) * | 1999-09-24 | 2004-10-15 | Metso Paper Inc | Kalanteri ja menetelmä paperi- tai kartonkirainan kalanteroimiseksi |
DE10057991C5 (de) * | 2000-11-23 | 2007-04-19 | Voith Patent Gmbh | Kalander und Verfahren zum Behandeln einer Materialbahn |
ATE270728T1 (de) * | 2001-03-22 | 2004-07-15 | Kuesters Eduard Maschf | Kalander |
DE102005021069A1 (de) * | 2005-05-06 | 2006-11-09 | Voith Patent Gmbh | Kalander |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2300994A (en) * | 1938-08-09 | 1942-11-03 | Cons Water Power & Paper Co | Calender for paper |
US2926600A (en) * | 1958-01-23 | 1960-03-01 | St Regis Paper Co | Method and means of supercalendering |
DE1461206A1 (de) * | 1964-10-16 | 1969-03-13 | Eck & Soehne | Kalander |
US3340796A (en) * | 1964-11-25 | 1967-09-12 | Kimberly Clark Co | Paper supercalender stack |
US3611917A (en) * | 1967-06-09 | 1971-10-12 | Dominion Eng Works Ltd | Calender stack with swimming roll |
DE3516535A1 (de) * | 1985-05-08 | 1986-11-13 | Kleinewefers Gmbh | Walzenaggregat mit durchbiegungssteuerbarer und temperierbarer walze |
DE3640161A1 (de) * | 1985-12-23 | 1987-07-02 | Escher Wyss Gmbh | Vorrichtung zum zueinander positionieren von walzenflaechen |
DE3611858A1 (de) * | 1986-04-09 | 1987-10-15 | Kleinewefers Gmbh | Deformationsregelwalze |
DE3713561A1 (de) * | 1987-04-23 | 1988-11-10 | Escher Wyss Gmbh | Kalander mit niprelieving |
ATE60096T1 (de) * | 1987-05-09 | 1991-02-15 | Kleinewefers Gmbh | Verfahren zum betrieb einer walzenmaschine und steueranordnung zur durchfuehrung dieses verfahrens. |
DE3936128A1 (de) * | 1989-10-30 | 1991-05-02 | Escher Wyss Gmbh | Kalander zur oberflaechenbearbeitung von materialbahnen |
US5237915A (en) * | 1992-02-04 | 1993-08-24 | The Mead Corporation | Mixed roll calender |
FI96334C (fi) * | 1993-11-24 | 1996-06-10 | Valmet Paper Machinery Inc | Menetelmä paperin tai vastaavan rainamateriaalin kalanteroinnissa ja menetelmää soveltava kalanteri |
-
1995
- 1995-03-27 DE DE19511145A patent/DE19511145C2/de not_active Expired - Lifetime
-
1996
- 1996-03-14 DE DE59607248T patent/DE59607248D1/de not_active Expired - Lifetime
- 1996-03-14 EP EP96104020A patent/EP0735185B1/de not_active Expired - Lifetime
- 1996-03-18 US US08/617,020 patent/US5662037A/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7340998B2 (en) | 2002-06-06 | 2008-03-11 | Metso Paper, Inc. | Arrangement for closing roll nips |
DE102008040247A1 (de) | 2008-07-08 | 2010-01-14 | Voith Patent Gmbh | Bandkalender |
Also Published As
Publication number | Publication date |
---|---|
EP0735185A3 (de) | 1998-05-06 |
EP0735185A2 (de) | 1996-10-02 |
DE59607248D1 (de) | 2001-08-16 |
US5662037A (en) | 1997-09-02 |
DE19511145A1 (de) | 1996-10-02 |
DE19511145C2 (de) | 2000-07-13 |
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