EP0732445B2 - Calandre pour le traitement d'une bande de papier - Google Patents

Calandre pour le traitement d'une bande de papier Download PDF

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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
Application number
EP96103277A
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German (de)
English (en)
Other versions
EP0732445B1 (fr
EP0732445A1 (fr
Inventor
Franz Kayser
Hans-Rolf Conrad
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.)
Voith Paper GmbH and Co KG
Original Assignee
Voith Paper Patent GmbH
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Filing date
Publication date
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Priority claimed from DE19534911A external-priority patent/DE19534911C2/de
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0732445A1 publication Critical patent/EP0732445A1/fr
Application granted granted Critical
Publication of EP0732445B1 publication Critical patent/EP0732445B1/fr
Publication of EP0732445B2 publication Critical patent/EP0732445B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)

Claims (17)

  1. Calandre avec un empilement de cylindres qui comporte des fentes de travail (10 à 15) formées à chaque fois entre un cylindre dur et un cylindre mou et une fente de retournement (16) formée entre deux cylindres mous, pour le traitement d'une bande de papier qui est soumise dans les fentes de travail à une contrainte de pression à chaque fois pendant un certain temps de séjour, l'empilement de cylindres comportant moins de 10 cylindres et la fente de retournement (16) étant disposée au milieu de l'empilement, c'est-à-dire entre les deux cylindres, les plus au centre dans le cas d'un nombre pair de cylindres et entre le cylindre le plus au centre et un cylindre adjacent dans le cas d'un nombre impair de cylindres, caractérisée en ce que, en utilisant des cylindres mous (3) contenant des espaces creux (33), le poids effectif des cylindres (2 à 8) et d'éventuelles pièces liées à ces cylindres est si petit que la somme des charges linéaires (f1 + f2 + f3) des fentes de travail (10, 11, 12) au-dessus de la fente de retournement (16) vaut au moins 80 % de la somme des charges linéaires (f4 + f5 + f6) des fentes de travail (13, 14, 15) au-dessous de la fente de retournement (16).
  2. Calandre selon la revendication 1, caractérisée en ce que l'empilement de cylindres comporte huit cylindres (2 à 9).
  3. Calandre selon la revendication 1 ou 2, caractérisée en ce que la somme des produits du temps de séjour (t) et de la contrainte de pression moyenne (P) dans les fentes de travail (10, 11, 12) au-dessus de la fente de retournement (16) vaut au moins 80 % de la somme desdits produits dans les fentes de travail (13, 14, 15) au-dessous de la fente de retournement (16).
  4. Calandre selon l'une des revendications 1 à 3, caractérisée en ce que le plan d'action de l'empilement de cylindres est incliné par rapport à la verticale.
  5. Calandre selon l'une des revendications 1 à 4, caractérisée en ce que le cylindre mou (3) comporte un manchon en matière plastique (34).
  6. Calandre selon l'une des revendications 1 à 5, caractérisée en ce que le cylindre mou (3) comporte une matière plastique renforcée par des fibres.
  7. Calandre selon l'une des revendications 1 à 6, caractérisée en ce que le cylindre supérieur (102 ; 202) et/ou le cylindre inférieur (109 ; 309) sont des cylindres mous.
  8. Calandre selon l'une des revendications 1 à 7, caractérisée en ce que le cylindre mou (102, 109 ; 202, 309) comporte un manchon de cylindre (32), qui est en un matériau ayant une résistance insuffisante à l'usure et qui porte un revêtement (34) en une matière plastique élastique, et en ce que la matière plastique a une plus grande résistance à l'usure que le matériau du manchon.
  9. Calandre selon la revendication 8, caractérisée en ce que le manchon de cylindre (32) est en fonte à graphite lamellé.
  10. Calandre selon la revendication 8, caractérisée en ce que le manchon de cylindre (32) est en fonte à graphite sphéroïdal.
  11. Calandre selon l'une des revendications 1 à 10, caractérisée en ce qu'au moins un cylindre dur (2, 4, 7, 9) peut être chauffé.
  12. Calandre selon l'une des revendications 1 à 11, caractérisée en ce que le cylindre supérieur (2) et/ou le cylindre inférieur (9) sont durs. et peuvent être chauffés.
  13. Calandre selon l'une des revendications 1 à 11, caractérisée en ce qu'au moins le cylindre central le plus haut (4 ; 103) est dur et peut être chauffé.
  14. Calandre selon la revendication 13, caractérisée en ce que tous les cylindres centraux durs (4, 6, 8, 11, 13 ; 103, 107) peuvent être chauffés.
  15. Calandre selon la revendication 13 ou 14, caractérisée en ce que le chauffage s'effectue au moyen de vapeur d'eau qui est amenée avec une surpression.
  16. Calandre selon l'une des revendications 1 à 15, caractérisée en ce que le cylindre supérieur (2 ; 102 ; 202 ; 302) et/ou le cylindre inférieur (9 ; 109 ; 209 ; 309) sont des cylindres, pouvant être contrôlés en flexion, dans lesquels un manchon de cylindre est appuyé par l'intermédiaire d'éléments de soutien (27, 28) hydrostatiques sur un support qui le traverse et qui est fixe en rotation.
  17. Calandre selon les revendications 7 et 16, caractérisée en ce que les cylindres pouvant être contrôlés en flexion (102, 109 ; 202 ; 309) comportent une commande à plusieurs zones dans laquelle un fluide de pression peut être amené avec une pression différente aux éléments de soutien (27, 28) contrôlés individuellement ou par paire.
EP96103277A 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier Expired - Lifetime EP0732445B2 (fr)

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 (fr) 1996-09-18
EP0732445B1 EP0732445B1 (fr) 1998-10-21
EP0732445B2 true EP0732445B2 (fr) 2004-09-08

Family

ID=26013182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103277A Expired - Lifetime EP0732445B2 (fr) 1995-03-09 1996-03-04 Calandre pour le traitement d'une bande de papier

Country Status (5)

Country Link
US (1) US5655442A (fr)
EP (1) EP0732445B2 (fr)
JP (1) JP2612679B2 (fr)
CA (1) CA2169976C (fr)
DE (1) DE29521610U1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
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
DE19811474A1 (de) * 1998-03-17 1999-09-23 Kuesters Eduard Maschf Kalanderanordnung
US7096779B2 (en) * 1998-03-17 2006-08-29 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calender arrangement
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
AU6845000A (en) * 1999-08-27 2001-03-26 Metso Paper Inc. Shoe roll
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
ATE270728T1 (de) * 2001-03-22 2004-07-15 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 (fr) 2019-01-22 2020-07-30 Pontus Subsea Connectors Llc Connecteur électrique accouplable et non accouplable sous l'eau

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CA2169976A1 (fr) 1996-09-10
DE29521610U1 (de) 1997-11-20
US5655442A (en) 1997-08-12
JPH08246382A (ja) 1996-09-24
CA2169976C (fr) 1998-12-01
EP0732445B1 (fr) 1998-10-21
JP2612679B2 (ja) 1997-05-21
EP0732445A1 (fr) 1996-09-18

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