EP0732445B2 - Kalander für die Behandlung einer Papierbahn - Google Patents
Kalander für die Behandlung einer Papierbahn Download PDFInfo
- Publication number
- EP0732445B2 EP0732445B2 EP96103277A EP96103277A EP0732445B2 EP 0732445 B2 EP0732445 B2 EP 0732445B2 EP 96103277 A EP96103277 A EP 96103277A EP 96103277 A EP96103277 A EP 96103277A EP 0732445 B2 EP0732445 B2 EP 0732445B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- calender according
- rolls
- soft
- calender
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- 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
Definitions
- the invention relates to a calender according to the preamble of claim 1.
- Calenders are from the Brochure "The new super calender concept" of the company Sulzer Papertec Krefeld GmbH from Mal 1994 known. They are used both coated and uncoated Satin paper, such as printing paper or silicone base papers. Called “hard” rollers metal rollers with a smooth and hard surface, which are essentially for smoothness and shine are responsible. Called “soft” rollers one rolls with an elastic or soft surface, which is essentially for even compaction to care. The alternating gap is required so both sides of the paper web are approximately uniform Experience treatment. It is common to have a calender to use with 12 to 18 rollers, the Alternating gap is located in the lower half of the stack.
- the invention has for its object a To specify calenders of the type described at the outset, , of largely the same satin results for one certain paper type, but a smaller one Construction height and its manufacturing and operating costs are lower.
- the number of working gaps is above or below the alternating gap equal to the number of working columns below the Alternating gap and thus less than the known one Supercalender. Nevertheless, almost the same satin result achieved because - while maintaining a maximum permissible compressive stress in the lowest working gap - because of the lower number of rollers and because of the lower weight influence of the rollers and any associated parts already in the first working gap a higher line load than before can and the line load increase less than in the known cases.
- the soft rollers are removed Cavities in particular come with hollow tubes with a cover into consideration. This ensures that the rollers themselves are light in weight. this happens in the hard rollers by the get the smallest possible diameter. With the soft One should roll instead of the compact and heavy rolls with paper cover lighter construction Use constructions.
- 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 because of the lower number of rollers in both Production and operation cost inexpensive.
- the roll stack Such a B-roll calender has eight rolls, where there is above and below the alternate spar There are essentially three working columns the same as a well-known 12-roll calender.
- the web treatment below the alternating gap is the same in both cases.
- the railway treatment Above the alternating gap there is no longer any carried out by four working columns; this is what it is about but the working column with the least influence of deformation.
- With the new construction can handle a very high line load in the first working gap be applied so that the paper web immediately undergoes significant deformation.
- the Kalandrier oriental can be more fully characterized, take into account that the sum of the products of dwell time and mean compressive stress in the tsspalten Arbe i is above the change gap is at least 80% of the sum of said products in the working gaps below the change gap. Because dwell time and compressive stress are two decisive factors for paper deformation.
- the soft Roll a fiber reinforced plastic such as epoxy having.
- fiber reinforcement in particular With carbon fibers, stability and low can be Combine weight with each other.
- top and / or bottom roller is a soft roller. If both end rollers are soft, the result is a 6-roll calender. If only one end roller is soft, you can stack rolls with odd Provide number of rollers. Soft end rollers can also be used lighter than hard end rollers be carried out what the adjustment of the line load sums above and below the alternating gap facilitated.
- roller shell made of one material is insufficient
- wear resistance and a cover made of an elastic plastic there is wear resistance and a cover made of an elastic plastic, and that the Plastic has a higher wear resistance than that Jacket material.
- roller jacket made of spheroidal graphite cast iron, i.e. a cast iron with spherical Graphite. This allows a reduction in wall thickness compared to chilled cast iron of up to 59%.
- the upper and / or lower rollers can advantageously be heated. Already in the first and also in the last gap therefore heat can be supplied to what is on both sides of the paper web Offers correction options.
- At least the top one Center roll is hard and heatable.
- Deformation energy already in the first working gap of the paper web supplied in the form of heat Across from an otherwise necessary heating of the top roller but this has the advantage that the top roller very much can be done much easier and cheaper, less Exposed to temperatures and deformed more may be without the seal underneath suffers.
- the heating can be carried out here Water vapor take place, which can be supplied with excess pressure.
- This type of heating is much easier and cheaper than heating with oil, as with a heated deflection compensation roller required would.
- top and / or bottom roller is a deflection controllable roller, at which is a roll shell over hydrostatic support elements on a penetrating, non-rotatable one Carrier is supported.
- Deflection control allows the line load across the width of the paper web to keep constant, so a very even one To achieve a satin finish.
- the deflection controllable Roll a multi-zone control has, in which the support elements individually or in pairs Hydraulic fluid can be supplied at different pressures is.
- This multi-zone control in which the individual Support elements arranged close to each other and an axial width of 5 to 20, for example cm, leads in conjunction with a soft roller jacket to influence the paper individually over very narrow areas already in the top Working gap, leading to a high level of uniformity the desired parameters across the paper web leads.
- the calender 1 illustrated in FIG. 1 has one Roller stack consisting of eight rollers, namely a heatable, deflection controllable hard top roller 2, a soft roller 3, a heatable hard roller 4, a soft roller 5, one soft roller 6, a heatable hard roller 7, one soft roller 8 and a heatable, deflection controllable hard bottom roller 9.
- a paper web 17 becomes a paper machine 18 fed, passes under the leadership of idlers 19 the working column 10 to 12, the alternating gap 16 and the working column 13 to 15, whereupon they are in a kelvorraum 20 is wound up.
- the three upper working columns 10 to 12 is the paper web with one Page, in the three lower working columns 13 to 15 with the other side on the hard rollers, so that the desired surface structure on both sides, for example Gloss or smoothness is achieved.
- each of the rollers has 2 to 9 its own drive 21. This enables retraction the paper web 17 during operation.
- the purpose of the correct dimensioning is according to the invention provided that the sum of the line loads f1 + f2 + f3 of the top working column 10, 11 and 12 at least 80% of the total of the line loads f4 + f5 + f6 the bottom three working columns is 13, 14 and 15.
- the top sum should be at least Amount to 80% of the lower sum.
- the calender had a width of 8.5 m and a web speed of 800 m / min. Simply by reducing the weight of the soft ones Rolling of around 40% reached the sum of Products from medium compressive stress p and dwell time t in the working columns above the alternating gap 16 a value of 82% of the total of the products in the working gaps below the alternating gap. Through further measures you can get even higher values with the vertical stack achieve, for example, 83 to 86%. With special designs, like the inclined stack, too higher values can be achieved.
- a 4-roll calender can also be used on the same principle be built up for simpler applications sufficient, but also one on both sides have approximately the same satin finish.
- the roll stack illustrated in FIG. 4 has a soft top roller 102 and a soft bottom roller 109 on.
- the alternating gap located exactly in the middle 116 is made by two soft rollers 105 and 106 limited.
- FIG. 5 shows a 9-roll calender, which is a soft top roller 202, but a hard bottom roller 209 has.
- the changing gap 216 is between the soft middle roller 205 and the soft one Neighbor roller 206 arranged. Otherwise change heated hard center rolls with soft rolls.
- roller 6 are a total of seven rollers used. It is a hard top roller 302 and a soft lower roller 309 are provided. The alternating gap 316 is between the soft middle roller 305 and the neighboring one soft roller 306. Otherwise, heated hard ones change medium rolls with soft rolls.
- roller shells can be constructed similarly to FIG. 3 and for example have a support tube made of spheroidal or lamellar graphite cast iron and wear a cover made of elastic plastic.
Landscapes
- Paper (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
- Fig. 1
- eine schematische Darstellung eines erfindungsgemäßen Kalanders,
- Fig. 2
- eine abgewandelte Ausführungsform,
- Fig. 3
- einen Schnitt durch eine weiche Walze,
- Fig. 4
- schematisch einen 6-Walzen-Kalander,
- Fig. 5
- schematisch einen 9-Walzen-Kalander und
- Fig. 6
- schematisch einen 7-Walzen-Kalander.
Claims (17)
- Kalander mit einem Walzenstapel, der zwischen jeweils einer harten und einer weichen Walze gebildete Arbeitsspalte (10 bis 15) und einen zwischen zwei weichen Walzen gebildeten Wechselspalt (16) aufweist, für die Behandlung einer Papierbahn, die in den Arbeitsspalten jeweils für eine Verweilzeit einer Druckspannung ausgesetzt ist, wobei der Walzenstapel weniger als 10 Walzen aufweist und der Wechselspalt (16) in der Mitte des Stapels angeordnet ist, d.h. bei gerader Walzenzahl zwischen den beiden mittelsten Walzen und bei ungerader Walzenzahl zwischen der mittelsten Walze und einer benachbarten Walze, dadurch gekennzeichnet, daßunter Verwendung von Hohlräume (33) enthaltenden weichen Walzen (3) das wirksame Gewicht der Walzen (2 bis 8) und eventuell damit verbundener Teile so gering ist, daß die Summe der Streckenlasten (f1 + f2 + f3) der Arbeitsspalte (10, 11, 12) oberhalb des Wechselspalts (16) mindestens 80 % der Summe der Streckenlasten (f4 + f5 +f6) der Arbeitsspalte (13, 14, 15) unterhalb des Wechselspaltes (16) beträgt.
- Kalander nach Anspruch 1, dadurch gekennzeichnet, daß der Walzenstapel acht Walzen (2 bis 9) aufweist.
- Kalander nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Summe der Produkte aus Verweilzeit (t) und mittlerer Druckspannung (P) in den Arbeitsspalten (10, 11, 12) oberhalb des Wechselspaltes (16) mindestens 80 % der Summe der genannten Produkte in den Arbeitsspalten (13, 14, 15) unterhalb des Wechselspalts (16) beträgt.
- Kalander nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wirkebene des Walzenstapels zur Vertikalen geneigt ist.
- Kalander nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die weiche Walze (3) einen Kunststoffmantel (34) aufweist.
- Kalander nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die weiche Walze (3) einen faserverstärkten Kunststoff aufweist.
- Kalander nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Ober- und/oder Unterwalze (102, 109; 202; 309) eine weiche Walze ist.
- Kalander nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die weiche Walze (102, 109; 202, 309) einen Walzenmantel (32) aufweist, der aus einem Material unzureichender Verschleißfestigkeit besteht und einen Bezug (34) aus einem elastischen Kunststoff trägt, und daß der Kunststoff eine höhere Verschleißfestigkeit hat als das Mantelmaterial.
- Kalander nach Anspruch 8, dadurch gekennzeichnet, daß der Walzenmantel (32) aus Lamellengraphitguß besteht.
- Kalander nach Anspruch 8, dadurch gekennzeichnet, daß der Walzenmantel (32) aus Kugelgraphitguß besteht.
- Kalander nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß zumindest eine harte Walze (2, 4, 7, 9) beheizbar ist.
- Kalander nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Ober- und/oder Unterwalze (2, 9) hart und beheizbar ist.
- Kalander nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß zumindest die oberste Mittelwalze (4; 103) hart und beheizbar ist.
- Kalander nach Anspruch 13, dadurch gekennzeichnet, daß alle harten Mittelwalzen (4, 6, 8, 11, 13; 103, 107) beheizbar sind.
- Kalander nach Anspruch 13 oder 14, dadurch gekennzeichnet, daß die Beheizung mittels Wasserdampf erfolgt, der mit Überdruck zuführbar ist.
- Kalander nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Ober- und/oder Unterwalze (2, 9; 102, 109; 202, 209; 302, 309) eine durchbiegungssteuerbare Walze ist, bei der ein Walzenmantel über hydrostatische Stützelemente (27, 28) auf einem ihn durchsetzenden, drehfest gehaltenen Träger abgestützt ist.
- Kalander nach Anspruch 7 und 16, dadurch gekennzeichnet, daß die durchbiegungssteuerbare Walze (102, 109; 202; 309) eine Vielzonen-Steuerung aufweist, bei der den Stützelementen (27, 28) einzeln oder paarweise Druckflüssigkeit mit unterschiedlichem Druck zuführbar ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19508351 | 1995-03-09 | ||
DE19508351 | 1995-03-09 | ||
DE19534911A DE19534911C2 (de) | 1995-03-09 | 1995-09-20 | Kalander für die Behandlung einer Papierbahn |
DE19534911 | 1995-09-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0732445A1 EP0732445A1 (de) | 1996-09-18 |
EP0732445B1 EP0732445B1 (de) | 1998-10-21 |
EP0732445B2 true EP0732445B2 (de) | 2004-09-08 |
Family
ID=26013182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96103277A Expired - Lifetime EP0732445B2 (de) | 1995-03-09 | 1996-03-04 | Kalander für die Behandlung einer Papierbahn |
Country Status (5)
Country | Link |
---|---|
US (1) | US5655442A (de) |
EP (1) | EP0732445B2 (de) |
JP (1) | JP2612679B2 (de) |
CA (1) | CA2169976C (de) |
DE (1) | DE29521610U1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19729531C2 (de) | 1997-07-10 | 2002-12-12 | Voith Paper Patent Gmbh | Papierkalander |
SE511203C2 (sv) * | 1997-10-14 | 1999-08-23 | Valmet Corp | Långnypspress samt långnypspressko till densamma |
DE19803323C2 (de) * | 1998-01-29 | 2003-06-05 | Voith Paper Patent Gmbh | Verfahren zur Beeinflussung eines Bahnmaterials, wie Papier, und Kalander zur Durchführung des Verfahrens |
US7096779B2 (en) * | 1998-03-17 | 2006-08-29 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Calender arrangement |
DE19811474A1 (de) * | 1998-03-17 | 1999-09-23 | Kuesters Eduard Maschf | Kalanderanordnung |
DE19820089C2 (de) * | 1998-05-06 | 2000-06-15 | Kuesters Eduard Maschf | Verfahren zum Kalandrieren einer Warenbahn mit einem vertikalen Mehrwalzen-Kalander |
DE19832065A1 (de) * | 1998-07-16 | 2000-01-20 | Voith Sulzer Papiertech Patent | Kalanderanordnung für Bahnen aus Papier oder ähnlichem Material |
JP2003508641A (ja) * | 1999-08-27 | 2003-03-04 | メトソ ペーパ インコーポレイテッド | シューロール |
FI20000615A (fi) * | 2000-03-16 | 2001-09-17 | Metso Paper Inc | Kalanteri ja menetelmä kalanterin telan vaihtamiseksi |
FI20001362A0 (fi) * | 2000-06-07 | 2000-06-07 | Valmet Corp | Menetelmä paperirainan profiloimiseksi |
DE50102790D1 (de) * | 2001-03-22 | 2004-08-12 | Kuesters Eduard Maschf | Kalander |
US7492965B2 (en) * | 2004-05-28 | 2009-02-17 | Lockheed Martin Corporation | Multiple map image projecting and fusing |
DE102005016781B3 (de) * | 2005-04-12 | 2006-03-30 | Eduard Küsters Maschinenfabrik GmbH & Co. KG | Kalander |
DE102013200614A1 (de) | 2013-01-16 | 2014-07-17 | Valmet Technologies, Inc. | Vorrichtung und Verfahren zur Kalandrierung einer Faserbahn |
WO2020154126A1 (en) | 2019-01-22 | 2020-07-30 | Pontus Subsea Connectors Llc | Underwater mateable and un-mateable electrical connector |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB202753A (en) * | 1922-05-31 | 1923-08-30 | Samuel Milne | Improvements in calenders for calendering paper and the like |
US2300994A (en) * | 1938-08-09 | 1942-11-03 | Cons Water Power & Paper Co | Calender for paper |
US3154008A (en) * | 1963-02-09 | 1964-10-27 | Dominion Eng Works Ltd | Calender stack |
US3291039A (en) * | 1964-04-20 | 1966-12-13 | John A Manning Paper Co Inc | Paper calender roll |
US3340796A (en) * | 1964-11-25 | 1967-09-12 | Kimberly Clark Co | Paper supercalender stack |
US3451331A (en) * | 1967-03-01 | 1969-06-24 | Westvaco Corp | Hot roll supercalender |
FI62874C (fi) * | 1979-10-15 | 1983-03-10 | Valmet Oy | Pappers kalander |
US4283690A (en) * | 1979-12-31 | 1981-08-11 | Motorola, Inc. | Low power CMOS oscillator |
DE3640161A1 (de) * | 1985-12-23 | 1987-07-02 | Escher Wyss Gmbh | Vorrichtung zum zueinander positionieren von walzenflaechen |
DE3711334A1 (de) * | 1987-04-03 | 1988-10-13 | Escher Wyss Gmbh | Vorrichtung zur fuehrung der walzen eines im wesentlichen vertikalen kalanders |
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
- 1995-09-20 DE DE29521610U patent/DE29521610U1/de not_active Expired - Lifetime
-
1996
- 1996-02-21 CA CA002169976A patent/CA2169976C/en not_active Expired - Fee Related
- 1996-03-04 EP EP96103277A patent/EP0732445B2/de not_active Expired - Lifetime
- 1996-03-07 US US08/612,169 patent/US5655442A/en not_active Expired - Lifetime
- 1996-03-08 JP JP8051482A patent/JP2612679B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0732445A1 (de) | 1996-09-18 |
CA2169976C (en) | 1998-12-01 |
JP2612679B2 (ja) | 1997-05-21 |
DE29521610U1 (de) | 1997-11-20 |
CA2169976A1 (en) | 1996-09-10 |
EP0732445B1 (de) | 1998-10-21 |
JPH08246382A (ja) | 1996-09-24 |
US5655442A (en) | 1997-08-12 |
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