EP0732445B1 - 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
EP0732445B1
EP0732445B1 EP96103277A EP96103277A EP0732445B1 EP 0732445 B1 EP0732445 B1 EP 0732445B1 EP 96103277 A EP96103277 A EP 96103277A EP 96103277 A EP96103277 A EP 96103277A EP 0732445 B1 EP0732445 B1 EP 0732445B1
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
EP0732445B2 (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 Patent GmbH
Original Assignee
Voith Sulzer Finishing 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 Sulzer Finishing GmbH filed Critical Voith Sulzer Finishing GmbH
Publication of EP0732445A1 publication Critical patent/EP0732445A1/fr
Publication of EP0732445B1 publication Critical patent/EP0732445B1/fr
Application granted granted Critical
Publication of EP0732445B2 publication Critical patent/EP0732445B2/fr
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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 with a Roll stack between a hard and each working gap formed by a soft roller and one alternating gap formed between two soft rollers has for the treatment of a paper web, which in the working columns for a dwell time each Is exposed to compressive stress.
  • 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. Of 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.
  • 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 roll stack has less than 10 rolls that the alternating gap is arranged in the middle of the stack is, i.e. with an even number of rollers between the two middle rollers and between an odd number of rollers the middle roller and an adjacent roller, and that the effective weight of the rollers and possibly so connected parts is so small that the sum of the Line loads of the working column above the alternating gap at least 80% of the total of the line loads of the Working gap below the alternating gap is.
  • 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.
  • the roll stack has eight rollers.
  • Such an 8-roll calender which is above and below the alternating gap
  • the Web treatment below the alternating gap is in both Cases the same.
  • the web treatment above the Alternating slit is eliminated with four working slits carried out; this is, however around the working column with the least amount of deformation.
  • 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 at least 80% 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 Get diameter. With the soft rollers should be used instead of the compact and heavy rollers Use lighter structures with paper cover.
  • the soft Rolls contain voids.
  • the soft Rolls contain voids.
  • hollow tubes provided with a cover are considered.
  • the soft roller a fiber-reinforced plastic, such as epoxy resin.
  • fiber reinforcement especially with Carbon fiber, can be stability and light weight unite with each other.
  • top and / or bottom roller one is 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 an odd number of rolls provide. Soft end rollers can also be used lighter weight than hard end rollers, what the adjustment of the line load totals above and relieved below the exchange gap.
  • roller jacket is made of lamellar graphite cast iron, so a cast iron with lamellar Graphite. Its wall thickness can be compared a cast iron roller jacket reduced by almost 50% will.
  • this cast iron is not very wear-resistant.
  • the cover made of elastic plastic as Wear protection layer serves. It is sufficient for this purpose a layer thickness between 8 and 15 mm, preferably 10 mm.
  • 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.
  • heating by means of steam can be used here take place, which can be fed with overpressure.
  • This type of heating is much simpler and cheaper than heating with oil, like in a heated deflection compensation roller required would.
  • top and / or bottom roller is a deflection controllable roll in which a roller jacket on hydrostatic support elements a penetrating, non-rotatable support is supported.
  • the deflection control allows the line load across the width of the paper web to keep constant in order to achieve a very even satin finish to achieve.
  • 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 in the middle of which is an alternating gap 16, which is divided 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 kelvorraum 20 is wound.
  • 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.
  • 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. Alone by saving weight on the soft rollers the sum of the products reached around 40% mean compressive stress p and dwell time t in the working gaps a value above the alternating gap 16 of 82% of the total of the products in the below the Alternating gap working columns. By more of the measures listed can be done in the vertical Stack even higher values, for example 83 to 86% achieve. With special constructions such as the inclined one Stack, higher values are also achievable.
  • the compressive stress p in the working gap was between 45 and 60 N / mm 2 .
  • the heated rollers 2, 4, 7 and 9 were given a surface temperature between 100 and 150 ° C.
  • the diameter of the soft rollers and the elasticity of their coating 34 were chosen so that there was a gap width of about 2 to 15 mm , preferably about 8 mm. Depending on the web speed, this leads to dwell times t in each working gap of 0.1 to 0.9, preferably 0.2 to 0.5 ms. It is preferred if the temperature T is only slightly above the lower limit, for example 110 ° C., if the compressive stress p 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 in an 8-roll calender.
  • 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 causes approximately the same satin finish.
  • the roll stack illustrated in FIG. 4 has one soft top roller 102 and a soft bottom roller 109 on.
  • the alternating gap located exactly in the middle 116 is limited by two soft rollers 105 and 106.
  • Two hard rollers 103 and 107, which end rollers 102 and 109 are adjacent with water vapor is supplied with overpressure, heated.
  • 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 neighboring roller 206 arranged. Otherwise change heated ones hard center rolls with soft rolls.
  • roller shells can be similar to be constructed in Fig. 3 and for example a support tube have spheroidal or lamellar graphite cast iron and wear a cover made of elastic plastic.

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  • Paper (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Claims (18)

  1. Calandre avec un empilement de cylindres qui comporte des fentes de travail formées à chaque fois entre un cylindre dur et un cylindre mou et une fente de retournement 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, caractérisée en ce que l'empilement de cylindres comporte moins de 10 cylindres, en ce que la fente de retournement (16) est 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, et en ce que 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 les cylindres mous (3) contiennent des espaces creux (33).
  6. Calandre selon l'une des revendications 1 à 5, caractérisée en ce que le cylindre mou (3) comporte un manchon en matière plastique (34).
  7. Calandre selon l'une des revendications 1 à 6, caractérisée en ce que le cylindre mou (3) comporte une matière plastique renforcée par des fibres.
  8. Calandre selon l'une des revendications 1 à 7, caractérisée en ce que le cylindre supérieur (102 ; 202) et/ou le cylindre inférieur (109 ; 309) sont des cylindres mous.
  9. Calandre selon l'une des revendications 1 à 8, 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.
  10. Calandre selon la revendication 9, caractérisée en ce que le manchon de cylindre (32) est en fonte à graphite lamellé.
  11. Calandre selon la revendication 9, caractérisée en ce que le manchon de cylindre (32) est en fonte à graphite sphéroïdal.
  12. Calandre selon l'une des revendications 1 à 11, caractérisée en ce qu'au moins un cylindre dur (2, 4, 7, 9) peut être chauffé.
  13. Calandre selon l'une des revendications 1 à 12, caractérisée en ce que le cylindre supérieur (2) et/ou le cylindre inférieur (9) sont durs et peuvent être chauffés.
  14. Calandre selon l'une des revendications 1 à 12, caractérisée en ce qu'au moins le cylindre central le plus haut (4 ; 103) est dur et peut être chauffé.
  15. Calandre selon la revendication 14, caractérisée en ce que tous les cylindres centraux durs (4, 6, 8, 11, 13 ; 103, 107) peuvent être chauffés.
  16. Calandre selon la revendication 14 ou 15, caractérisée en ce que le chauffage s'effectue au moyen de vapeur d'eau qui est amenée avec une surpression.
  17. Calandre selon l'une des revendications 1 à 16, 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.
  18. Calandre selon les revendications 8 et 17, 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
DE19534911 1995-09-20
DE19534911A DE19534911C2 (de) 1995-03-09 1995-09-20 Kalander für die Behandlung einer Papierbahn

Publications (3)

Publication Number Publication Date
EP0732445A1 EP0732445A1 (fr) 1996-09-18
EP0732445B1 true EP0732445B1 (fr) 1998-10-21
EP0732445B2 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
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
ATE320525T1 (de) * 1999-08-27 2006-04-15 Metso Paper Inc Kalander mit zwei durchbiegungseinstellzwischenwalzen
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
EP1243694B1 (fr) * 2001-03-22 2004-07-07 Eduard Küsters Maschinenfabrik GmbH & Co. KG Calandre
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

Citations (1)

* 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

Family Cites Families (12)

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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 Kalander für die zweiseitige Behandlung einer Papierbahn

Patent Citations (1)

* 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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Das Papier, 16. Jahrgang, Heft 7, Juli 1962, Seiten 277-285, Heinz Mac und Peter Schlegel: "Untersuchungen über den Glättvorgang auf dem Rollensatinierkalander" *
Das Papier, Heft 10A, 1992, Seiten V182-V189, Peter Svenka: "Elastische Walzenbezüge für Superkalander und Softkalander" *

Also Published As

Publication number Publication date
JPH08246382A (ja) 1996-09-24
CA2169976A1 (fr) 1996-09-10
JP2612679B2 (ja) 1997-05-21
US5655442A (en) 1997-08-12
DE29521610U1 (de) 1997-11-20
EP0732445B2 (fr) 2004-09-08
EP0732445A1 (fr) 1996-09-18
CA2169976C (fr) 1998-12-01

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