EP0732444B1 - Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb - Google Patents

Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb Download PDF

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Publication number
EP0732444B1
EP0732444B1 EP96103276A EP96103276A EP0732444B1 EP 0732444 B1 EP0732444 B1 EP 0732444B1 EP 96103276 A EP96103276 A EP 96103276A EP 96103276 A EP96103276 A EP 96103276A EP 0732444 B1 EP0732444 B1 EP 0732444B1
Authority
EP
European Patent Office
Prior art keywords
rolls
calender according
calender
working
roll
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
Application number
EP96103276A
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German (de)
English (en)
French (fr)
Other versions
EP0732444A1 (de
Inventor
Franz Kayser
Rolf Dr. Van Haag
Ulrich Rothfuss
Reinhard Wenzel
Dieter Junk
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7756119&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0732444(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voith Sulzer Finishing GmbH filed Critical Voith Sulzer Finishing GmbH
Publication of EP0732444A1 publication Critical patent/EP0732444A1/de
Application granted granted Critical
Publication of EP0732444B1 publication Critical patent/EP0732444B1/de
Anticipated expiration legal-status Critical
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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
    • D21G1/02—Rolls; Their bearings
    • D21G1/0233—Soft rolls
    • 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

Definitions

  • the invention relates to a calender for the Treatment of a paper web, especially for production of gravure-proof paper, with one from the end resilient roll stack, between each one hard working gap formed by a soft roller and an alternating nip between two soft rollers has, with part of the rollers heated and at least an end roll is deflection controllable, and on a method of operating this calender.
  • Calenders of this type are widely known, for example from the brochure "The New Super Calender Concepts" from Sulzer Papertec from 1994 (code 05/94 d). They are used for the final treatment of a paper web so that it has a desired value for smoothness, gloss, thickness, bulk and the like. receives, and are set up separately from a paper machine.
  • the "soft" or elastic rollers have a cover consisting mainly of 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, and values up to a maximum of about 40 N / mm 2 have already been used in the lowest working gap.
  • 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, which also for the treatment of gravure and others suitable for high quality papers, but cheaper in Manufacture and operation.
  • the stack has only eight rollers and, in order to increase the deformation energy to be supplied to the paper web, at least for one working gap, the condition is that the dwell time is at least 0.1 ms and that the heating of a heatable roller delimiting the working gap is designed for a surface temperature of at least 100 ° C and the load on the rollers for an average compressive stress in the working gap of at least 42 N / mm 2 .
  • the condition applies that, at least for one working gap, the condition applies that the dwell time is at most 0.9 ms and that the heating to a surface temperature of at most 150 ° C. and the load to an average compressive stress of at most 60 N / mm 2 is designed. In fact, only a moderate increase in surface temperature and compressive stress is required. In most cases, a surface temperature of less than 130 ° C and an average compressive stress of less than 50 N / mm 2 are sufficient.
  • the preferred dwell time is 0.2 to 0.5 ms.
  • 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.
  • a plastic cover has a service life of at least twelve weeks.
  • An example of this is a Cover from "TopTec 4" from Scapa Kern, Wimpassing / Called Austria.
  • a further embodiment of the invention is the stack arranged in-line of a paper machine or coating machine.
  • the paper web therefore comes at an elevated temperature, for example at 60 ° C, at the inlet gap of the Calender and therefore only needs a small amount Heat input to a sufficient deformation energy to make available.
  • plastic covers that are for the sake of higher Compressive stress are desired, particularly suitable because - unlike paper covers - they are essential are less sensitive to markings and therefore rarely need to be removed and sanded.
  • 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 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 soft roller 6, a heatable hard roller 7, a soft roller 8 and a heatable, deflection-controllable hard Bottom roller 9.
  • 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 soft roller 6, a heatable hard roller 7, a soft roller 8 and a heatable, deflection-controllable hard Bottom roller 9.
  • there are six working gaps 10 to 15, each by a hard roller and a soft roller are limited, and a Alternating 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 is achieved.
  • 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 plastic. This Material is less sensitive to marking than paper, so that the longer ones essential for in-line operation Downtimes can be achieved. In addition, the cover with a higher compressive stress. He is also more resistant to higher temperatures than Paper.
  • the force P ensures that the mean compressive stress p in the working gaps 10 to 12 and 13 to 15, in particular in the lowest gap, is between 42 and 60 N / mm 2 , and preferably above 45 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 .
  • the target quantity Zg which corresponds to the above relationship (I) is plotted in a three-dimensional diagram in the ordinate, the compressive stress p in N / mm 2 in one abscissa and the dwell time t in ms in the other abscissa.
  • Three areas of constant temperature T are entered in ° C, of which the 100 ° C area with solid lines and points at the network crossings, the 125 ° C area with dash-dotted lines with circles at the network crossings and the 150 ° C area with dashed lines Crossing at the network crossings is shown.
  • the arithmetic mean of the dwell time t, the surface temperature T and the mean compressive stress p is first determined from all six working columns. If one goes into the diagram of FIG. 2 with these values, one can immediately determine whether the target variable Zg lies in the desired target range between 0.8 and 0.9. In many cases, the results of the paper treatment can be improved further by the fact that the rollers, in particular the center rollers, are mounted in levers in an unillustrated manner, the overhanging weights being advantageously compensated for by supporting devices, as is known from EP 0 285 942 B1.

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  • Paper (AREA)
EP96103276A 1995-03-09 1996-03-04 Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb Revoked EP0732444B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508349 1995-03-09
DE19508349A DE19508349C2 (de) 1995-03-09 1995-03-09 Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb

Publications (2)

Publication Number Publication Date
EP0732444A1 EP0732444A1 (de) 1996-09-18
EP0732444B1 true EP0732444B1 (de) 1998-10-21

Family

ID=7756119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103276A Revoked EP0732444B1 (de) 1995-03-09 1996-03-04 Kalander für die Behandlung einer Papierbahn und Verfahren zu dessen Betrieb

Country Status (9)

Country Link
US (1) US5671665A (ru)
EP (1) EP0732444B1 (ru)
JP (1) JP2612678B2 (ru)
KR (1) KR0160397B1 (ru)
AT (1) ATE172508T1 (ru)
CA (1) CA2169977C (ru)
DE (2) DE19508349C2 (ru)
EA (1) EA000187B1 (ru)
NO (1) NO307577B1 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100684A1 (de) 2004-04-13 2005-10-27 Voith Patent Gmbh Trockenanordnung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19758443A1 (de) † 1997-03-14 1998-09-24 Voith Sulzer Finishing Gmbh Glättwerk
DE10101182C1 (de) * 2001-01-12 2002-01-24 Voith Paper Patent Gmbh Verfahren zum Behandeln einer Materialbahn und Kalander
KR100398683B1 (ko) * 2001-10-18 2003-09-19 삼성광주전자 주식회사 밀폐형 왕복동식 압축기의 커넥팅로드 장치
KR100435867B1 (ko) * 2001-11-06 2004-06-12 한솔제지주식회사 종이 표면처리용 랩 칼렌더
FI119068B (fi) * 2004-11-12 2008-07-15 Metso Paper Inc Menetelmä kalanterissa ja monitelakalanteri sekä menetelmä monitelakalanterin kalanteritelan laakerin kuormittamiseksi ja monitelakalanteri

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2300994A (en) * 1938-08-09 1942-11-03 Cons Water Power & Paper Co Calender for paper
DE865701C (de) * 1949-01-01 1953-02-05 Eck & Soehne Joseph Einrichtung zum Auswechseln von Walzen, insbesondere bei Papier- und Textilkalandern
US2926600A (en) * 1958-01-23 1960-03-01 St Regis Paper Co Method and means of supercalendering
US3153378A (en) * 1961-12-04 1964-10-20 Benjamin J H Nelson Method of calendering
US3647619A (en) * 1969-11-10 1972-03-07 Eastman Kodak Co High pressure calendering of a paper web between heated calender rolls having non-resilient surfaces
FI62874C (fi) * 1979-10-15 1983-03-10 Valmet Oy Pappers kalander
DE3004915C2 (de) * 1980-02-09 1982-07-15 Kleinewefers Gmbh, 4150 Krefeld Kalander
US4480537A (en) * 1983-07-25 1984-11-06 Agronin Ronald D Method and apparatus for calendering a web
FI72768B (fi) * 1984-11-30 1987-03-31 Waertsilae Oy Ab Nerkylning av pappersbana i superkalander.
FI71374C (fi) * 1984-12-31 1986-12-19 Valmet Oy Foerfarande och anordning vid kalandrering av en bana
DE3713561A1 (de) * 1987-04-23 1988-11-10 Escher Wyss Gmbh Kalander mit niprelieving
DE3735438C1 (de) * 1987-10-20 1989-05-18 Kleinewefers Gmbh Verfahren zum Betrieb eines Kalanders und Kalander zur Durchfuehrung dieses Verfahrens
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005100684A1 (de) 2004-04-13 2005-10-27 Voith Patent Gmbh Trockenanordnung

Also Published As

Publication number Publication date
KR960034575A (ko) 1996-10-24
CA2169977C (en) 1998-12-01
EA000187B1 (ru) 1998-12-24
EP0732444A1 (de) 1996-09-18
NO960975D0 (no) 1996-03-08
EA199600008A3 (ru) 1996-12-30
KR0160397B1 (ko) 1999-01-15
JP2612678B2 (ja) 1997-05-21
NO307577B1 (no) 2000-04-25
ATE172508T1 (de) 1998-11-15
US5671665A (en) 1997-09-30
JPH08246381A (ja) 1996-09-24
DE19508349A1 (de) 1996-09-12
NO960975L (no) 1996-09-10
DE19508349C2 (de) 2003-04-03
CA2169977A1 (en) 1996-09-10
DE59600688D1 (de) 1998-11-26
EA199600008A2 (ru) 1996-10-01

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