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US20060011319A1 - Press section in a paper or board machine - Google Patents

Press section in a paper or board machine Download PDF

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Publication number
US20060011319A1
US20060011319A1 US10/535,431 US53543105A US2006011319A1 US 20060011319 A1 US20060011319 A1 US 20060011319A1 US 53543105 A US53543105 A US 53543105A US 2006011319 A1 US2006011319 A1 US 2006011319A1
Authority
US
United States
Prior art keywords
press
nip
web
press nip
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.)
Abandoned
Application number
US10/535,431
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English (en)
Inventor
Petter Honkalampi
Petteri Halme
Sami Anttilainen
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.)
Valmet Technologies Oy
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Assigned to METSO PAPER, INC. reassignment METSO PAPER, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANTTILAINEN, SAMI, HALME, PETTERI, HONKALAMPI, PETTER
Publication of US20060011319A1 publication Critical patent/US20060011319A1/en
Assigned to VALMET TECHNOLOGIES, INC. reassignment VALMET TECHNOLOGIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: METSO PAPER, INC.
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip

Definitions

  • the invention relates to a press section in a paper or board machine which is provided with at least a forming section, a press section and a dryer section and in which the press section is provided with separate press nips.
  • a separate press nip is meant a press nip in which opposing press members define only one press nip.
  • a separate press nip can be a roll nip or an extended nip.
  • the opposite of a separate press nip is a press which is provided with a center roll and in which the center roll forms press nips with at least two other rolls.
  • FIGS. 4-6 show control of the surface properties of a web with chemicals, and examples suitable for a smoothing press nip.
  • a tandem transfer belt is used underneath in the second and third nips.
  • Dewatering is not symmetric because dewatering takes place in both directions in the first nip, upwards in the second nip, and no dewatering takes place in the third nip, but, instead, there is smoothing and application of the web because belts are placed on both sides of the web.
  • the third press nip of these embodiments does not increase dry solids even though it improves the surface properties of the web, thus increasing the overall length of the paper machine.
  • FI patent 95610 discloses a press section of a paper machine provided with a smoothing press.
  • the paper web has a closed and supported draw through the press section and the press section comprises at least two successive separate press nips, dewatering of the paper web being carried out at least in the first one of said press nips, preferably between two press fabrics that receive water.
  • the last press nip in the press section is a smoothing press nip which is separate from the preceding nip and in which no substantial dewatering is performed.
  • the paper web is passed through the smoothing press nip from the preceding dewatering press nip on a transfer belt substantially not receiving water, on its substantially straight run, which is continued after the smoothing nip as a run of substantially the same direction, on which run some of the elongation of the paper web in the machine direction can be compensated for, which elongation takes place in the smoothing nip, by a difference in speed of the transfer belt.
  • FIG. 2 shows an embodiment comprising three shoe press units in which the web is first passed through the first and the second shoe press unit which are placed underneath a counter roll, i.e. underneath the web, and the third shoe press is placed above a counter roll, i.e. above the web.
  • FI patent application 981089 discloses a press section of a paper machine applying one or more press nips, through which the paper web to be pressed is passed as a substantially closed draw and in which press section there is at least one press nip provided with two water-receiving press felts, through which press nip the paper web runs between the press felts and after which last-mentioned nip the paper web is separated from one of the press felts and transferred on support of the other press felt substantially as a closed draw further.
  • the last nip in the press section is an extended nip zone, in which one roll is a shoe roll provided with a hose shell and with a press shoe arrangement and the other roll is a press suction roll provided with a suction zone.
  • the paper web is passed through the last extended nip zone between two water-receiving press fabrics and directly after the last extended nip zone the paper web is separated from one of the press fabrics and transferred, with the aid of a vacuum present in a suction zone of said press section roll, to follow the press fabric placed at the side of said press suction roll without substantial rewetting, and the paper web is passed on the latter press fabric as a closed draw onto a drying wire or equivalent of a dryer section following after the press section, onto which drying wire or equivalent the web is transferred as a suction roll transfer or by means of an equivalent arrangement.
  • FI patent application 961518 discloses press section geometries in which a press section provided with a closed draw of a web in a paper or board machine comprises a first water-receiving upper fabric onto which the web is transferred on a suction zone of a pick-up roll from a forming wire at a pick-up point situated after its suction roll and after that there is a wire drive roll, from which the return run of the wire begins.
  • the press comprises one or two successive press nips which press water from the web and between which the web has a totally closed draw such that it is supported by a fabric all the time.
  • the press nips removing water are so-called extended nips, whose press zone is substantially longer than that of a sharp roll nip, and all press nips are additionally provided with two water-receiving press fabrics so that water is removed in them substantially symmetrically through both surfaces of the web.
  • the embodiments shown in FIGS. 1, 2 and 3 make use of a lightly loaded transfer nip, which nip is defined by a press roll, provided with a recessed surface and disposed within an upper wire loop, together with a first drying cylinder or equivalent.
  • One object of the invention is to develop further a press section that has a closed draw and is suitable for speeds over 1800 m/min and advantageously over 2000 m/min, at which there are no problems with surface topography and absorption symmetry described above.
  • One object of the invention is to provide a press section of a paper or board machine which makes it possible to optimize surface topography and absorption at a speed over 1800 m/min and advantageously over 2000 m/min.
  • closed draw through the press section is accomplished as a substantially straight run and the press section includes at least three separate press nips which do not have any fabric loops in common with one another.
  • the first press nip in the running direction of the web is a roll nip or a press suction roll nip, advantageously at lower speeds of over 1800 m/min, but with speeds increasing over 2000 m/min and with increasing dewatering need, an extended nip becomes an advantageous alternative. It is conceivable that in the case of three nips at high speeds all the nips are extended nips and, on the other hand, in the case of more nips than three at a lower speed mere roll nips can be used. The next two nips each have only one water-receiving fabric, which is placed in each nip on the opposite side of paper with respect to the other nip in the machine direction.
  • both sides of the web are smoothed/evened out one at a time mechanically against a smooth surface, which smooth surface can be a smooth roll, known from a center roll arrangement, or a transfer belt.
  • a smooth surface can be a smooth roll, known from a center roll arrangement, or a transfer belt.
  • removal of water from the web takes place in the nip only in a direction away from the smooth surface, i.e. to the side of the water-receiving fabric.
  • Transfer from the press section in accordance with the invention to a dryer section takes place, as known in itself, from a transfer belt, and in the embodiments in which a smooth surface is in an upper position in the last nip of the press section, transfer from a lower felt is used.
  • the press section in accordance with the invention provides good surface properties of the web in respect of printability and also makes it possible to use high speeds, over 1800 m/min and advantageously over 2000 m/min, and enable good efficiency with a good moisture profile.
  • the press section in accordance with the invention also facilitates the adjustment of two-sidedness that takes place further in the paper machine line and which can be performed mainly by means of calendering and application of chemicals.
  • the bulk possibly lost during pressing can be saved later by means of lighter calendering, which can be optimized further according to other desired surface properties, as there is no need to correct absorption symmetry.
  • press dry solids increase in more press nips than conventional, it may be possible to manage with a shorter dryer section even though the press section becomes longer.
  • the web is transferred from the surface of an upper felt to a second press and, in the second nip, dewatering takes place downwards and the upper surface of the web is either against a smooth roll or a smooth transfer belt.
  • dewatering takes place upwards and the lower surface of the web is against a transfer belt and the transfer of the web is from a lower fabric to a dryer section.
  • a roll press is placed after the first nip in the second press, whereby a sufficient material displacement is achieved in the second nip, i.e. displacement of fines to the side of the lower surface of the web.
  • a sufficient material displacement is achieved in the second nip, i.e. displacement of fines to the side of the lower surface of the web.
  • the smoothness of the upper surface of the web improves because it is pressed against a smooth surface.
  • FIG. 1A is a schematic view of one embodiment of the invention.
  • FIG. 1B is a schematic view of one variant of the first press nip in the embodiment of the invention shown in FIG. 1A .
  • FIG. 2A is a schematic view of a second embodiment of the invention.
  • FIG. 2B is a schematic view of one alternative application of the embodiment of the invention shown in FIG. 2A .
  • FIG. 3 is a schematic view of a third embodiment of the invention.
  • a web W formed in a forming section is passed to a pick-up point P situated on a forming wire 10 before reversing rolls 11 , 12 placed within the loop of the forming wire 10 .
  • the pick-up point P is formed between the forming wire 10 and a roll 24 placed within the loop of a first water-receiving press felt 20 and provided with a suction sector 24 a, so that the web W runs at the pick-up point P between the forming wire 10 and the first press felt 20 .
  • the web W is separated from the forming wire 10 and transferred to be supported by the first press felt 20 .
  • the web W is transferred on support of the lower surface of the first press felt 20 to a first press nip N 1 , which is defined by two recessed surface press rolls 22 and 23 to form therebetween a roll nip N 1 or a press suction roll nip ( FIG. 1B ), in which case the upper roll 22 is a press suction roll provided with a suction zone and the other roll 23 is a recessed surface roll. In that connection, a felt suction roll 25 can be omitted.
  • the web W runs in the first press nip N 1 between the first water-receiving press felt 20 serving as an upper press fabric and a first water-receiving press felt 21 serving as a lower press fabric. Dewatering of the web W takes place in the first press nip N 1 into both press felts 20 , 21 . In the embodiments which use a press suction roll, water is also removed through a suction zone into the suction roll.
  • the travel of the web W with the upper press felt 20 is assured by means of a vacuum in a suction zone 25 a of an upper suction roll 25 , and the web W is separated from the first press felt 20 by means of a vacuum in a suction zone 34 a of a lower transfer suction roll 34 and caused to adhere to a second lower press fabric 30 , which may also be a press felt, on the upper surface of which the web W is transferred to a second press nip N 2 , which is defined between a roll 32 and a press suction roll 33 provided with a suction zone 33 a.
  • the suction zone 33 a of the suction roll 33 preferably has a large sector and a high vacuum, assuring that the web adheres to the desired felt already before the press nip and follows the felt after the nip in order that the web should not follow the smooth roll.
  • the web W is transferred on support of the second press fabric 30 and transferred by means of a suction zone 44 a of a transfer suction roll 44 to be supported by a subsequent upper press felt 40 and to a third press nip N 3 , which is defined between an extended nip press roll 42 and a counter roll 43 .
  • the embodiment shown in FIG. 2A mainly corresponds to the embodiment described in connection with FIG. 1A and its variants, but in the embodiment shown in FIG. 2A , the second press nip N 2 is formed such that in the second nip 42 there is an upper transfer belt 31 and as the lower fabric 30 , as in the embodiment shown in FIG. 1A , there is a press felt 30 .
  • the web W is passed on the lower surface of the transfer belt 31 onto a transfer fabric 60 , onto which the web W is transferred by means of a suction zone 64 a of a transfer suction roll 64 and on support of the felt 60 the web W is passed by means of a suction zone 44 a of a suction roll 44 to be transferred so as to be supported by the upper fabric 40 of the third press nip N 3 .
  • FIG. 2B mainly corresponds to the embodiment shown in FIG. 2A except that each nip N 1 , N 2 , N 3 has been formed into an extended nip, in which one roll is an extended nip roll 22 ; 33 ; 42 and the other roll is its counter roll 23 ; 32 ; 43 .
  • FIG. 3 shows an embodiment of the invention in which the web W is passed from a forming wire 10 of a forming section before a reversing roll 11 to a pick-up point P, at which the web W is passed by means of a suction zone 24 a of a suction roll 24 so as to be supported by a first water-receiving press felt 20 and the web W is passed to a first press nipN 1 , which is defined between two recessed surface press rolls 22 , 23 or between a press suction roll and a recessed surface press roll (as in FIG. 1B ).
  • a lower press felt 21 also receives water.
  • Adherence to the surface of the lower press felt 21 is assured by means of a vacuum in a suction zone 26 a of a transfer suction roll 26 and the web W is passed by means of a vacuum in a suction zone 35 a of a suction roll 35 so as to be supported by an upper press felt 31 of a second press nip N 2 .
  • the second press nip N 2 is formed into an extended nip press between an extended nip roll 32 and a counter roll 33 .
  • the lower fabric in this press nip N 2 is a water-receiving press felt 30 .
  • the web W On its support the web W is passed onto a transfer suction roll 44 , and by means of a vacuum in a suction zone 44 a of the transfer suction roll 44 the web W is passed to be supported by an upper felt 40 , on which the web is passed to a third nip N 3 , which is a smoothing press nip formed between rolls 42 and 43 .
  • the roll 42 is a press suction roll which is provided with a suction zone 42 a. Dewatering takes place into a suction zone 42 a of the suction roll.
  • the web is passed from the felt 40 to a subsequent felt 70 by means of a vacuum in a suction zone 74 a of a suction roll 74 , and by means of the felt 70 the web is passed to a subsequent smoothing nip N 4 formed between a press suction roll 73 and a suction roll 72 .
  • the suction zones 42 a and 73 a of the suction rolls 42 and 73 preferably have a large sector and a high vacuum, assuring that the web adheres to the desired felt already before the press nip and that it follows the felt after the nip in order that the web should not follow the smooth roll.
  • the web W is passed to a dryer section to be supported by a drying wire 50 , as described above in connection with FIGS. 1A and 2A .
  • the embodiment in accordance with FIG. 3 can also be accomplished such that only one press nip that receives water in both directions is placed before the smoothing press nips N 3 , N 4 , in that case in the first press nip N 1 there can be a nip defined by a shoe roll and a recessed surface roll or a nip defined by a shoe roll and a press suction roll.

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  • Paper (AREA)
US10/535,431 2002-11-19 2003-10-10 Press section in a paper or board machine Abandoned US20060011319A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20022057A FI116400B (fi) 2002-11-19 2002-11-19 Paperi- tai kartonkikoneen puristinosa
FI20022057 2002-11-19
PCT/FI2003/000751 WO2004046459A1 (en) 2002-11-19 2003-10-10 Press section in a paper or board machine

Publications (1)

Publication Number Publication Date
US20060011319A1 true US20060011319A1 (en) 2006-01-19

Family

ID=8564962

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/535,431 Abandoned US20060011319A1 (en) 2002-11-19 2003-10-10 Press section in a paper or board machine

Country Status (7)

Country Link
US (1) US20060011319A1 (de)
EP (1) EP1576232B1 (de)
CN (1) CN1738941B (de)
AU (1) AU2003274174A1 (de)
DE (1) DE60328414D1 (de)
FI (1) FI116400B (de)
WO (1) WO2004046459A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007149312A2 (en) 2006-06-16 2007-12-27 The Trustees Of The University Of Pennsylvania Methods and compositions for inhibiting or reducing hair loss, acne, rosacea, prostate cancer, and bph
US8480858B2 (en) * 2007-12-20 2013-07-09 Stora Enso Oyj Board or paper produced in an arrangement in connection with the press section of a web-forming machine
US20180371693A1 (en) * 2016-01-29 2018-12-27 Voith Patent Gmbh Press for a machine for producing a fibrous material web
US10280562B2 (en) * 2014-09-15 2019-05-07 Upm Specialty Papers Oy Process to manufacture low weight high quality paper for use as a support layer of a release liner with a belt assembly
DE102018119686A1 (de) * 2018-08-14 2020-02-20 Voith Patent Gmbh Papiermaschine
DE102020131965A1 (de) 2020-12-02 2022-06-02 Voith Patent Gmbh Papiermaschine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005050281A1 (de) * 2005-10-20 2007-04-26 Voith Patent Gmbh Pressanordnung
DE102005050282A1 (de) * 2005-10-20 2007-06-14 Voith Patent Gmbh Pressanordnung
DE102007021879A1 (de) 2007-05-10 2008-11-13 Voith Patent Gmbh Pressenanordnung und Maschine zur Herstellung einer Faserstoffbahn
DE102008000151A1 (de) * 2008-01-25 2009-07-30 Voith Patent Gmbh Vorrichtung zur Herstellung und/oder Behandlung einer Faserstoffbahn
DE102009047470A1 (de) * 2009-12-03 2011-06-09 Voith Patent Gmbh Vorrichtung zur Behandlung einer laufenden Papier-, Karton- oder anderen Faserstoffbahn
DE102016201333A1 (de) * 2016-01-29 2017-08-03 Voith Patent Gmbh Pressenpartie
CN111648152A (zh) * 2020-05-28 2020-09-11 湖北平安电工股份有限公司 一种高密度云母纸的生产方法
SE2051044A1 (en) * 2020-09-04 2021-10-05 Valmet Oy Crescent former for producing tissue paper

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881670A (en) * 1954-07-23 1959-04-14 St Annes Board Mill Co Ltd Apparatus and method for de-watering stock on a fourdrinier type paper or board-making machine
US4526655A (en) * 1982-09-15 1985-07-02 Valmet Oy Press section with separate press nips in a paper machine
US5611893A (en) * 1990-11-23 1997-03-18 Valmet Corporation Device for dewatering of a paper web including prepressing with extended nip shoe
US5623726A (en) * 1994-07-11 1997-04-22 Rauma Materials Technology Oy Roll manufacture
US5662778A (en) * 1994-10-06 1997-09-02 Valmet Corporation Press section with an equalizing nip in a paper machine
US5762761A (en) * 1995-04-24 1998-06-09 Valmet Corporation Press section of a paper machine employing two separate press nips
US5792320A (en) * 1995-10-03 1998-08-11 Valmet Corporation Method and device for removing water from a paper or board web by pressing
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US6197156B1 (en) * 1991-12-23 2001-03-06 Valmet Paper Machinery, Inc. Press section of a paper machine, in particular for printing paper qualities
US6210530B1 (en) * 1996-12-13 2001-04-03 Voith Sulzer Papiermaschinen Gmbh Press section and method for pressing with different shoe press lengths
US6432273B1 (en) * 1998-07-01 2002-08-13 Metso Paper, Inc. Former-press section in a paper machine and method for transfer of the web from the former to the press section
US6699362B1 (en) * 1999-05-12 2004-03-02 Metso Paper, Inc. Method for the manufacture of paper, and paper machine line
US20040055723A1 (en) * 2000-11-06 2004-03-25 Petter Honkalampi Press section of a board machine provided with a pre-press and method for removing water from a web in such a press section
US6730192B1 (en) * 1999-05-14 2004-05-04 Metso Paper, Inc. Method and machine for manufacturing printing paper or paperboard
US20050011624A1 (en) * 2001-06-18 2005-01-20 Hannu Korhonen Method, paper machine and base paper for the manufacture of lwc printing paper coated once
US20050124248A1 (en) * 2002-04-26 2005-06-09 Tamfelt Oyj Abp Press felt
US6926806B2 (en) * 2000-02-22 2005-08-09 Metso Paper, Inc. Simple press section in a paper or board machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI892705A7 (fi) * 1989-06-02 1990-12-03 Ahlstroem Valmet Pressparti foer en pappers-, kartong- eller cellulosatorkningsmaskin.
FI96789C (fi) 1990-11-23 1996-08-26 Valmet Paper Machinery Inc Menetelmä ja laite veden poistamiseksi paperiradasta puristamalla
FI111859B (fi) 1998-05-15 2003-09-30 Metso Paper Inc Paperikoneen puristinosa, jossa sovelletaan yhtä tai useampaa pitkänippiä
FI112873B (fi) 1999-03-12 2004-01-30 Metso Paper Inc Menetelmä ja sovitelma paperi- ja kartonkirainan käsittelemiseksi
FI109481B (fi) * 2001-05-16 2002-08-15 Metso Paper Inc Menetelmä paperin tai kartongin valmistamiseksi

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881670A (en) * 1954-07-23 1959-04-14 St Annes Board Mill Co Ltd Apparatus and method for de-watering stock on a fourdrinier type paper or board-making machine
US4526655A (en) * 1982-09-15 1985-07-02 Valmet Oy Press section with separate press nips in a paper machine
US5611893A (en) * 1990-11-23 1997-03-18 Valmet Corporation Device for dewatering of a paper web including prepressing with extended nip shoe
US6197156B1 (en) * 1991-12-23 2001-03-06 Valmet Paper Machinery, Inc. Press section of a paper machine, in particular for printing paper qualities
US5623726A (en) * 1994-07-11 1997-04-22 Rauma Materials Technology Oy Roll manufacture
US5662778A (en) * 1994-10-06 1997-09-02 Valmet Corporation Press section with an equalizing nip in a paper machine
US5762761A (en) * 1995-04-24 1998-06-09 Valmet Corporation Press section of a paper machine employing two separate press nips
US5792320A (en) * 1995-10-03 1998-08-11 Valmet Corporation Method and device for removing water from a paper or board web by pressing
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US6210530B1 (en) * 1996-12-13 2001-04-03 Voith Sulzer Papiermaschinen Gmbh Press section and method for pressing with different shoe press lengths
US6432273B1 (en) * 1998-07-01 2002-08-13 Metso Paper, Inc. Former-press section in a paper machine and method for transfer of the web from the former to the press section
US6699362B1 (en) * 1999-05-12 2004-03-02 Metso Paper, Inc. Method for the manufacture of paper, and paper machine line
US6730192B1 (en) * 1999-05-14 2004-05-04 Metso Paper, Inc. Method and machine for manufacturing printing paper or paperboard
US6926806B2 (en) * 2000-02-22 2005-08-09 Metso Paper, Inc. Simple press section in a paper or board machine
US20040055723A1 (en) * 2000-11-06 2004-03-25 Petter Honkalampi Press section of a board machine provided with a pre-press and method for removing water from a web in such a press section
US20050011624A1 (en) * 2001-06-18 2005-01-20 Hannu Korhonen Method, paper machine and base paper for the manufacture of lwc printing paper coated once
US20050124248A1 (en) * 2002-04-26 2005-06-09 Tamfelt Oyj Abp Press felt

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007149312A2 (en) 2006-06-16 2007-12-27 The Trustees Of The University Of Pennsylvania Methods and compositions for inhibiting or reducing hair loss, acne, rosacea, prostate cancer, and bph
US8480858B2 (en) * 2007-12-20 2013-07-09 Stora Enso Oyj Board or paper produced in an arrangement in connection with the press section of a web-forming machine
US10280562B2 (en) * 2014-09-15 2019-05-07 Upm Specialty Papers Oy Process to manufacture low weight high quality paper for use as a support layer of a release liner with a belt assembly
US20180371693A1 (en) * 2016-01-29 2018-12-27 Voith Patent Gmbh Press for a machine for producing a fibrous material web
US10612192B2 (en) * 2016-01-29 2020-04-07 Voith Patent Gmbh Press for a machine for producing a fibrous material web
DE102018119686A1 (de) * 2018-08-14 2020-02-20 Voith Patent Gmbh Papiermaschine
DE102020131965A1 (de) 2020-12-02 2022-06-02 Voith Patent Gmbh Papiermaschine

Also Published As

Publication number Publication date
WO2004046459A1 (en) 2004-06-03
FI20022057A0 (fi) 2002-11-19
DE60328414D1 (de) 2009-08-27
EP1576232B1 (de) 2009-07-15
FI116400B (fi) 2005-11-15
EP1576232A1 (de) 2005-09-21
CN1738941A (zh) 2006-02-22
AU2003274174A1 (en) 2004-06-15
FI20022057A7 (fi) 2004-05-20
CN1738941B (zh) 2010-08-11

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