EP0732446B1 - Kalander für die zweiseitige Behandlung einer Papierbahn - Google Patents
Kalander für die zweiseitige Behandlung einer Papierbahn Download PDFInfo
- Publication number
- EP0732446B1 EP0732446B1 EP96103278A EP96103278A EP0732446B1 EP 0732446 B1 EP0732446 B1 EP 0732446B1 EP 96103278 A EP96103278 A EP 96103278A EP 96103278 A EP96103278 A EP 96103278A EP 0732446 B1 EP0732446 B1 EP 0732446B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolls
- calender according
- calender
- compressive stress
- gap
- 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.)
- Revoked
Links
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 two-sided treatment of a paper web, in particular for the production of rotogravure paper, with a from the end resilient roll stack, the hard rolls and soft rollers as well as between hard ones and has a working gap formed by a soft roller, some of the rollers being heatable.
- Calenders of this type are widely known, for example from the brochure "The new supercalender concepts" from Sulzer Papertec from 1994 (code no 05/94 d). They are used for the final treatment of a Paper web so that this has a desired value of Smoothness, gloss, thickness, bulk and the like. receives, and are set up separately from a paper machine.
- the "soft" or elastic rollers carry a cover consisting mainly of a fiber material.
- the heated rollers have a surface temperature limited to around 80 ° C.
- the average compressive stress in the nips is between 15 and 30 N / mm 2 in normal operation, values up to a maximum of 40 N / mm 2 have already been used in the lowest working gap.
- a stack of 9 or 10 rollers is sufficient.
- 12 to 16 rollers are required for higher quality papers, such as gravure papers, technical papers or compression papers. Such a large machine is expensive and takes up a lot of space.
- So-called compact calenders are also known, where a heated roller with a deflection controllable soft roller forms a gap and for two-sided treatment of the paper web also two such calenders are connected in series can.
- this can only be easily satinized Papers, but not technical papers, e.g. Silicon base papers as well as papers for gravure printing, produce.
- the heatable Rollers therefore have a surface temperature of 160 to 200 ° C. A lot of heat energy is radiated, which must be removed by air conditioning. Because the roller diameter is larger due to the strength than with the supercalender, high line loads must be be applied to achieve a desired satin finish to generate the necessary compressive stresses.
- replacement rollers for the elastic rollers expensive because it is deflectable should be.
- the invention has for its object a calender of the type described at the beginning, the smaller as well as cheaper to manufacture and operate is, but still allows excellent satin results.
- the 8-roll calender the practically the same calendering results delivers like a conventional 12-roll calender, the previously used for the production of gravure printing and other high quality papers considered necessary has been.
- the division into two stacks has the other Advantage that the dependence of the line load on the roll weight is lower, i.e. in the uppermost gap with a much higher line load than before can be worked.
- the dwell time is at most 0.9 ms and that the heating to a surface temperature of maximum 150 ° C. and the load to an average compressive stress of up to 60 N / mm 2 is designed. In fact, only a moderate increase in surface temperature and compressive stress is required.
- the residence time is 0.2 to 0.5 ms
- the surface temperature is 110 to 125 ° C.
- the average compressive stress is 45 to 55 N / mm 2 .
- top and / or bottom roller deflection are controllable. In this way, the Compression equalized across the entire width of the rollers will.
- top and Bottom roller are heated. About those hard rollers the heat energy can be supplied better than the adjacent soft roller. This also applies if the Deflection control of the upper and / or lower roll, because, for example, you have a heated hydraulic fluid can supply.
- the soft rollers have a plastic cover.
- Such plastic-related rollers are much better suited than rollers covered with fiber material for operation with increased medium compressive stress. They allow operation with a compressive stress of more than 42 N / mm 2 .
- the reference should be designed for a compressive strength of up to about 60 N / mm 2 .
- plastic cover in the consists essentially of fiber-reinforced epoxy resin.
- Such a plastic cover has a service life of at least twelve weeks.
- the paper web therefore comes with increased Temperature, for example at 60 ° C, at the inlet gap of the calender and therefore only needs a low heat input to a sufficient deformation energy to make available.
- plastic covers that are for reasons the higher compressive stress are desirable, especially suitable because - in contrast to covers made of fiber material - Much less sensitive to markings are and therefore rarely removed and sanded Need to become.
- the calender consisting of two stacks the other Advantage that they are more suitable for in-line use, because the running paper web in each stack only through a smaller number of columns are passed through got to.
- all rollers have a drive.
- the paper web can therefore be drawn in with the calender running because all the reels are at the same speed can be brought before the column getting closed.
- the calender 1 illustrated in FIG. 1 has one Roll stack, which consists of eight rolls, namely a heatable, deflection-controllable hard Top roller 2, a soft roller 3, a heatable hard roller 4, a soft roller 5, a soft Roller 6, a heatable hard roller 7, a soft one Roller 8 and a heated, deflection controllable hard bottom roller 9. Result in this way six working columns 10 to 15, each by one hard roller and a soft roller are limited, and an interchangeable nip 16 formed by two soft rollers 5 and 6 is limited.
- a paper web 17 is fed from a paper machine 18, passes under the guidance of idlers 19 the working column 10 to 12, the alternating gap 16 and the working column 13 to 15, whereupon it in a winding device 20 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.
- each of the rollers 2 to 9 has its own Drive 21. This allows the Paper web 17 during operation.
- Each of the soft ones Rollers 3, 5, 6 and 8 have a cover 22 made of plastic, especially fiber reinforced epoxy. This Material is less sensitive to marking than one Cover made of fiber material, so that for in-line operation much longer downtimes can be achieved. In addition, the cover with higher compressive stress be charged. It is also resistant to higher temperatures more durable than paper. As an example of this a cover from "TopTec 4" from Scapa Kern, Wimpassing / Austria called.
- the force P is used to ensure that the mean compressive stress p in the working gaps 10 to 12 and 13 to 15, or at least in the lowest gap, is between 45 and 60 N / mm 2 .
- the surface temperature of the heatable rollers 2, 4, 7 and 9 is between 100 and 150 ° C.
- the diameter of the rollers and the elasticity of the covering 22 are chosen so that there is a gap width of approximately 2 to 15 mm, preferably approximately 8 mm. Depending on the web speed, this leads to dwell times t in each working gap of 0.1 to 0.9 ms. It is preferred if the temperature T 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 .
- a 6-roll calender 44 is illustrated in FIG. 2, which has a single stack that is a hard one Top roller 45, a soft roller 46, a hard roller 47, soft rollers 48 and 49 and a hard bottom roller 50 includes. Is located between the soft rollers 48 and 49 an alternating gap 51. Above it is the smoothed a surface of the paper web 52 below the alternating gap 51 the other surface. Often the results of paper treatment can still be improve that the rollers, especially the Center rolls in a manner not shown in levers are stored, with advantage the overhanging weights are compensated by support devices, such as this is known from EP 0 285 942 B1.
Landscapes
- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
oder
- b) und daß zumindest für einen Arbeitsspalt als Bedingung
gilt:
- b1) die Spaltbreite ist so gewählt, daß die Verweilzeit mindestens 0,1 ms beträgt,
- b2) die Beheizung einer den Arbeitsspalt begrenzenden beheizbaren Walze ist auf eine Oberflächentemperatur von mindestens 100° C ausgelegt
- b3) und die Belastung der Walzen ist auf eine mittlere Druckspannung im Arbeitsspalt von mehr als 42 N/mm2 ausgelegt.
- Fig. 1
- eine schematische Darstellung eines erfindungsgemäßen Kalanders und
- Fig. 2
- eine schematische Darstellung einer abgewandelten Ausführungsform.
Claims (12)
- Kalander für die zweiseitige Behandlung einer Papierbahn, insbesondere zur Erzeugung von tiefdruckfähigem Papier, mit einem vom Ende her belastbaren Walzenstapel, der harte Walzen und weiche Walzen sowie jeweils zwischen einer harten und einer weichen Walze gebildete Arbeitsspalte aufweist, wobei ein Teil der Walzen beheizbar ist,
dadurch gekennzeichnet,a1) daß der Stapel 6 bis 8 Walzen (2 bis 9; 45 bis 50) mit einem durch zwei weiche Walzen gebildeten Wechselspalt (16; 51) aufweist
odera2) daß zwei gleichartige Stapel mit je 3 oder 4 Walzen vorgesehen sind,b) und daß zumindest für einen Arbeitsspalt (15) als Bedingung gilt:b1) die Spaltbreite ist so gewählt, daß die Verweilzeit (t) mindestens 0,1 ms beträgt,b2) die Beheizung (H) einer den Arbeitsspalt begrenzenden beheizbaren Walze (2, 4, 7, 9) ist auf eine Oberflächentemperatur (T) von mindestens 100° C ausgelegtb3) und die Belastung (P) der Walzen ist auf eine mittlere Druckspannung im Arbeitsspalt von mehr als 42 N/mm2 ausgelegt. - Kalander nach Anspruch 1, dadurch gekennzeichnet, daß zumindest für den einen Arbeitsspalt (15) die Bedingung gilt, daß die Verweilzeit (t) höchstens 0,9 ms beträgt und daß die Beheizung (H) auf eine Oberflächentemperatur von maximal 150°C und die Belastung (P) auf eine mittlere Druckspannung bis zu 60 N/mm2 ausgelegt ist.
- Kalander nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Verweilzeit (t) 0,2 bis 0,5 ms, die Oberflächentemperatur (T) 110 bis 125° C und die mittlere Druckspannung (p) 45 bis 55 N/mm2 beträgt.
- Kalander nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Bedingung für die Mehrheit der oder alle Arbeitsspalte (10 bis 15) gilt.
- Kalander nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Ober- und/oder Unterwalze (2, 9) durchbiegungssteuerbar sind.
- Kalander nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß Ober- und Unterwalze (2, 9) beheizbar sind.
- Kalander nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die weichen Walzen (3, 5, 6, 8) einen Kunststoffbezug (22) tragen.
- Kalander nach Anspruch 7, dadurch gekennzeichnet, daß der Kunststoffbezug (22) auf eine Druckspannungs-Belastbarkeit bis 60 N/mm2 ausgelegt ist.
- Kalander nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß der Kunststoffbezug (22) im wesentlichen aus faserverstärktem Epoxidharz besteht.
- Kalander nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der oder die Stapel in-line einer Papiermaschine (18) oder Streichmaschine angeordnet sind.
- Kalander nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß alle Walzen (2 bis 9) einen Antrieb (21) besitzen.
- Kalander nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Stapel von einer Schutzhaube (31) abgedeckt ist, die die Wärmeabstrahlung reduziert.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29504034U DE29504034U1 (de) | 1995-03-09 | 1995-03-09 | Kalander für die zweiseitige Behandlung einer Papierbahn |
DE29504034U | 1995-03-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0732446A1 EP0732446A1 (de) | 1996-09-18 |
EP0732446B1 true EP0732446B1 (de) | 1998-10-21 |
Family
ID=8005101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96103278A Revoked EP0732446B1 (de) | 1995-03-09 | 1996-03-04 | Kalander für die zweiseitige Behandlung einer Papierbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US5791242A (de) |
EP (1) | EP0732446B1 (de) |
JP (1) | JP2612680B2 (de) |
CA (1) | CA2169978C (de) |
DE (2) | DE29504034U1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19940897C1 (de) * | 1999-08-27 | 2000-11-09 | Kuesters Beloit Gmbh & Co Kg | Kalander |
DE10355686A1 (de) * | 2003-11-28 | 2005-06-23 | Voith Paper Patent Gmbh | Papiermaschine |
DE102004003921A1 (de) * | 2004-01-27 | 2005-11-24 | Voith Paper Patent Gmbh | Verfahren und Anordnung zur Herstellung einer holzfrei gestrichenen, matten oder halbmatten Papierbahn |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19508349C2 (de) * | 1995-03-09 | 2003-04-03 | Voith Paper Patent Gmbh | Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb |
DE29521610U1 (de) * | 1995-03-09 | 1997-11-20 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Kalander für die Behandlung einer Papierbahn |
DE19508352B4 (de) * | 1995-03-09 | 2005-07-21 | Voith Paper Patent Gmbh | Kalander für die Behandlung einer Papierbahn |
DE29504034U1 (de) * | 1995-03-09 | 1995-05-04 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Kalander für die zweiseitige Behandlung einer Papierbahn |
DE19508353A1 (de) * | 1995-03-09 | 1996-09-12 | Voith Sulzer Finishing Gmbh | Kalander für die zweiseitige Behandlung einer Papierbahn |
CA2188074C (en) | 1995-11-13 | 2000-12-05 | Dieter Kurth | Process for converting and printing on webs, and a printing machine for carrying out this process |
DE29518424U1 (de) * | 1995-11-21 | 1996-03-14 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Kalander in einer Papier- oder Streichmaschine |
DE19547164C1 (de) * | 1995-12-16 | 1997-02-06 | Voith Sulzer Finishing Gmbh | Kalander für die Behandlung einer Papierbahn und Anwendung dieses Kalanders |
US7357072B2 (en) | 1996-12-06 | 2008-04-15 | Eduard Kusters Maschinefabrik Gmbh & Co. Kg | Calender |
DE19650576C2 (de) | 1996-12-06 | 2001-02-15 | Kuesters Eduard Maschf | Kalander |
DE19711241C2 (de) * | 1997-03-18 | 2002-08-29 | Voith Paper Patent Gmbh | Kalander für Papier und ähnliches Bahnmaterial |
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 |
US7096779B2 (en) | 1998-03-17 | 2006-08-29 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Calender arrangement |
US20030126998A1 (en) * | 1998-03-17 | 2003-07-10 | Eduard Kusters Maschinenfabrik Gmbh & Co. Kg | Calender arrangement |
DE19811474A1 (de) * | 1998-03-17 | 1999-09-23 | Kuesters Eduard Maschf | Kalanderanordnung |
DE19832067B4 (de) * | 1998-07-16 | 2005-04-21 | Voith Paper Patent Gmbh | Kalander für Bahnen aus Papier oder ähnlichem Material |
US6368444B1 (en) | 1998-11-17 | 2002-04-09 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for cross-directional stretching of polymeric film and other nonwoven sheet material and materials produced therefrom |
FI113288B (fi) † | 2000-02-16 | 2004-03-31 | Metso Paper Inc | Menetelmä ja laite paperin kalanteroimiseksi |
FI20001362A0 (fi) * | 2000-06-07 | 2000-06-07 | Valmet Corp | Menetelmä paperirainan profiloimiseksi |
DE10353138B3 (de) * | 2003-11-14 | 2005-08-11 | Voith Paper Patent Gmbh | Kalander |
US7871496B2 (en) | 2003-11-28 | 2011-01-18 | Voith Paper Patent Gmbh | Paper machine |
FI20065284L (fi) * | 2006-05-02 | 2007-11-03 | Metso Paper Inc | Off-line tyyppisen paperikoneen tuotantolinjan modifiointiratkaisu |
FI121275B (fi) * | 2007-04-12 | 2010-09-15 | Metso Paper Inc | Menetelmä kuiturainan kalanteroimiseksi |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1793114A (en) * | 1929-03-27 | 1931-02-17 | Minton Vacuum Dryer Corp | Slip-control calender |
US3124504A (en) * | 1960-04-04 | 1964-03-10 | Gloss finishing of uncoated paper | |
US3230867A (en) * | 1961-12-04 | 1966-01-25 | Benjamin J H Nelson | Paper finishing mechanism |
FI62874C (fi) * | 1979-10-15 | 1983-03-10 | Valmet Oy | Pappers kalander |
US4749445A (en) * | 1984-05-18 | 1988-06-07 | S. D. Warren Company | Method of finishing paper utilizing substrata thermal molding |
JPH01183595A (ja) * | 1988-01-11 | 1989-07-21 | Mitsubishi Paper Mills Ltd | コーテッド紙のスーパーカレンダー処理方法 |
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 |
DE29504034U1 (de) * | 1995-03-09 | 1995-05-04 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Kalander für die zweiseitige Behandlung einer Papierbahn |
-
1995
- 1995-03-09 DE DE29504034U patent/DE29504034U1/de not_active Expired - Lifetime
-
1996
- 1996-02-21 CA CA002169978A patent/CA2169978C/en not_active Expired - Fee Related
- 1996-03-04 EP EP96103278A patent/EP0732446B1/de not_active Revoked
- 1996-03-04 DE DE59600691T patent/DE59600691D1/de not_active Revoked
- 1996-03-07 US US08/612,170 patent/US5791242A/en not_active Expired - Lifetime
- 1996-03-08 JP JP8051485A patent/JP2612680B2/ja not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19940897C1 (de) * | 1999-08-27 | 2000-11-09 | Kuesters Beloit Gmbh & Co Kg | Kalander |
EP1081281A2 (de) * | 1999-08-27 | 2001-03-07 | Küsters Beloit GmbH & Co. KG | Kalander |
EP1081281A3 (de) * | 1999-08-27 | 2001-07-18 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Kalander |
DE10355686A1 (de) * | 2003-11-28 | 2005-06-23 | Voith Paper Patent Gmbh | Papiermaschine |
DE102004003921A1 (de) * | 2004-01-27 | 2005-11-24 | Voith Paper Patent Gmbh | Verfahren und Anordnung zur Herstellung einer holzfrei gestrichenen, matten oder halbmatten Papierbahn |
Also Published As
Publication number | Publication date |
---|---|
CA2169978C (en) | 1999-03-23 |
EP0732446A1 (de) | 1996-09-18 |
CA2169978A1 (en) | 1996-09-10 |
JPH08260380A (ja) | 1996-10-08 |
JP2612680B2 (ja) | 1997-05-21 |
US5791242A (en) | 1998-08-11 |
DE29504034U1 (de) | 1995-05-04 |
DE59600691D1 (de) | 1998-11-26 |
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