EP1218593B1 - Method and paper machine for production of a liner comprising at least two layers - Google Patents

Method and paper machine for production of a liner comprising at least two layers Download PDF

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Publication number
EP1218593B1
EP1218593B1 EP00961297A EP00961297A EP1218593B1 EP 1218593 B1 EP1218593 B1 EP 1218593B1 EP 00961297 A EP00961297 A EP 00961297A EP 00961297 A EP00961297 A EP 00961297A EP 1218593 B1 EP1218593 B1 EP 1218593B1
Authority
EP
European Patent Office
Prior art keywords
nip
press
fibre web
roll
top layer
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
EP00961297A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1218593A1 (en
Inventor
Anders Leandersson
Ingemar Emanuelsson
Carl Häkansson
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
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1218593A1 publication Critical patent/EP1218593A1/en
Application granted granted Critical
Publication of EP1218593B1 publication Critical patent/EP1218593B1/en
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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F2/00—Transferring continuous webs from wet ends to press sections
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type

Definitions

  • the present invention relates to a method for the production of a liner comprising at least a top layer and a base layer.
  • the invention also relates to a paper machine for realisation of the method.
  • a liner a form of multilayer board, comprises frequently a top layer, which is intended for printing. This top layer must display a high smoothness in order to achieve good printability.
  • bleached pulp is preferably used, most of the times pulp which is bleached to high brightness and which contains short fibres.
  • US patent No. 5 792 320 discloses a board machine having a multi-layer web former.
  • the machine also includes a press section.
  • a transfer belt is used to transfer the board web from the forming section and into the first press nip.
  • US patent No. 4 197 158 discloses a machine with a multi-ply board former and a press section comprising a number of nips formed between rolls.
  • the former has three headboxes. All nips are described as being double-felted nips.
  • the great advantage is achieved that the top layer intended for printing acquires a very good printability, wherein the fibre web simultaneously lets itself be transferred through the press section with a higher speed than can be considered to be conventional.
  • the invention also relates to a paper machine for production of a liner, according to claim 12.
  • Fig. 1 shows a preferred embodiment in accordance with the invention.
  • a forming section 1 is illustrated.
  • the forming section 1 consists of a fourdrinier wire, with two forming units, which in a known manner among other things comprises a first 1A and a second 1B headbox.
  • the construction shown is entirely known to the man skilled in the art and is therefore not described in detail.
  • a fibre web w is created, which consists of a base layer and a top layer.
  • the fibre web w is conveyed into a press section P, by being transferred on a first press felt 2 by means of a pick-up suction roll 3.
  • the press section comprises three roll nips, which are formed by only four rolls 6,7,9,11, whereby a compact arrangement can be achieved.
  • the rolls are suitably placed somewhat laterally in relation to each other, so that they can be said to be placed in the proximity to an oblique (non-vertical) line. (see also Fig. 3).
  • the press felt 2 runs from the pick-up suction roll 3 to a press roll 7 (suitably a suction roll) and then around guide rolls (not shown).
  • the suction roll 7 constitutes the upper roll in a first nip which is achieved against a second press roll 6 placed towards the bottom.
  • This press roll 6 is co-operating with a lower press felt 5, which is co-operating with two guide rolls, 4, 8. Consequently a double-felted nip is created between the first two press rolls 6, 7. A second nip is created between the first suction roll 7 and a third press roll 9. Also this nip is double-felted, in that a third press felt 19 runs around the third press roll 9.
  • a third roll nip is shown, between the third press roll 9 and a shoe press roll 11. Apart from the third felt 19, one impermeable transfer belt 30 is being fed through this third nip.
  • This transfer belt is at least arranged with one smooth surface 30A, which is turned away from the shoe press unit 11 and against the third press felt 19.
  • the transfer belt 30 passes a first guide roll 10 before the nip and around a second guide roll 12 after the nip.
  • a fourth felt 14 or drying wire
  • a drying section D follows, which is only shown to a smaller extent.
  • a drying wire 16, a vacuum roll 17 and a drying cylinder 18 are also shown.
  • the vacuum roll 17 is arranged so that the drying wire 16 runs against the felt 14 between the suction roll 13 and the guide roll 15.
  • the above-described set of machines is, in compliance with the invention, intended to manufacture with high efficiency a multilayer liner with a top layer with high printability.
  • the machine shown operates in the following manner.
  • a base layer is applied on the fourdrinier wire by means of a first headbox 1A.
  • a top layer is spread (in a known manner) by means of a second headbox 1B.
  • the base layer consists essentially of pulp containing long fibres, preferably containing fir and/or pine fibres.
  • the top layer is suitably formed by a pulp, which at least partly contains short fibres.
  • fibres from easily bleached kinds of wood as birch or eucalyptus are used, which are bleached to a relatively high brightness, preferably over 85 ISO, more preferred to a brightness exceeding 90 ISO.
  • the fibre web w formed is then fed over to the press section P by means of a pick-up suction roll 3 and the felt 2 that runs around this. Consequently, the top layer abuts against this felt 2.
  • the base layer then meets the lower press felt 5 and the fibre web w is then fed through the first roll nip 6, 7, which accordingly is double-felted.
  • the fibre web then follows the felt 2 around the first suction roll 7 into the second roll nip 7, 9. In this roll nip, the top layer will abut against the press felt 2, while the base layer will abut against a third smoother press felt 19.
  • the web follows thereafter the smoother third press felt 19, around a third press roll 9, which preferably consists of a grooved roll.
  • the web runs into the third roll nip 9, 11, in which the top layer meets the smooth surface 30A in the impermeable transfer belt 30.
  • the web then follows the impermeable transfer belt 30 until it encounters the drying wire/felt 14 which runs around the suction roll 13.
  • the web then follows the felt 14 until it encounters the drying wire 16 which it follows around the vacuum roll 17, then around the drying cylinder 18 and further into the drying section D.
  • Fig. 2 a modification in accordance with the invention is shown.
  • the set of machines is the same as according to with Fig. 1, and therefore merely the modifications will be described.
  • the considerable difference in relation to Fig. 1 is that five rolls are used to create the three nips, instead of four as according to Fig. 1, which allows larger flexibility for the set of rolls.
  • the first roll nip is created by means of a shoe press roll 21 which is pressing against a lower press roll 6.
  • a suction press roll 23 which constitutes the second nip with the last but one press roll 9.
  • a guide roll 22 is arranged above the third press roll 23 in order to carry the felt 2.
  • the lower press felt 5 runs as previously through the first roll nip and above that around the third press roll 23.
  • the transfer belt 30 runs around the last but one press roll 9.
  • the last press unit 11 is formed of a shoe press roll.
  • a press felt 19 runs around this shoe press roll 11 by means of guide rolls 24, 25.
  • the top layer will abut against the upper the press felt 2 in the first nip 6, 21, and is thereafter liberated from contact with the press felt 2, by means of the suction roll 23.
  • the guide roll 22 preferably is arranged movable, whereby the web w can be allowed to run towards the second nip only in contact with the lower press felt 5.
  • the top layer encounters the smooth surface 30A of the transfer belt 30 and follows thereafter the transfer belt 30 around the last but one press roll 9 through the last nip 9, 11, and thereafter, as in Fig 1, it is transferred to a drying wire/felt 14 which runs towards the drying section D. Consequently, also in this set the top layer is pressed in the last nip against the smooth surface 30A of the transfer belt.
  • a twin wire former with a first 1A and a second 1B headbox is used here for creating a web w with a top layer and a base layer.
  • the press section is formed of only four press rolls.
  • the first roll nip consists of one first press roll 21 and one suction roll 6.
  • the transfer belt 30 runs around the last but one press roll 9 in order to form both the last but one nip 6, 9 and the last nip 9, 11.
  • the last press unit constitutes of a shoe press roll 11.
  • a transfer from the transfer belt 30 to a drying wire/felt 14 is done in accordance with Fig. 3 over the suction roll 13 and then to a drying wire, not shown.
  • Fig. 4 still another modification in accordance with the invention is shown, wherein only two roll nips are used.
  • the forming section 1 is the same as in accordance with Figs. 1 and 2.
  • the transferring of the web from forming section 1 and to drying D section is substantially the same as what has earlier been shown.
  • the first nip 6, 21 is substantially similar to what has already been described with reference to Fig. 2, with the difference that the lower press felt 5 according to Fig. 4 only runs through one roll nip and that the upper press felt 2 preferably consists of a smooth felt.
  • the first nip 6, 21 can, however, just as well be a press.
  • the top layer encounters the smooth surface 30A of the transfer belt 30.
  • the web w is transferred in a known manner by means of a suction roll 24 from the upper the felt 2 to the third press felt 19 and is conveyed in that manner into the last the nip 9, 11.
  • Fig. 5 there is shown a further modification according to the invention.
  • the main portion of the press section P is identical to the press section shown in Fig. 2.
  • the transfer zone from the press section to the drying section D of Fig. 5 is identical with what is shown in Fig. 4.
  • the modification of the embodiment shown in Fig. 5 resides in the arrangement of a further press roll nip 6', 21' at the beginning of the press section P. It is shown that the fibre web W is transferred from the forming section 1 to the press section P by means of a press felt 2' and a suction pick up roll 3', which conveys the web on to the press felt 2'.
  • this first nip is a press roll nip without the use of any shoe press roll.
  • the web W follows the lower press felt 5' into contact with a suction roll 3 which transfers the web W on to a third press felt 2.
  • the press section is identical with the one shown in Fig. 2 and accordingly will not be explained more in detail. However, it should be noted that also this press section, including four roll nips, the top layer of the web will be pressed against the smooth surface 30A of the transfer belt in the last nip.
  • the invention is not limited to what is shown above, but can be varied within the scope of the following claims. Consequently, it is realised that for instance more than four roll nips can be used, if desired for certain installations. In addition, it is realised that still more constellations of sets of rolls are feasible for utilising the beneficial principles in accordance with the invention. Further, it is realised that a liner consisting of more than two layers can be produced in accordance with a method according to the invention, for instance triple layers, four layers, etc., wherein different mixtures of pulp can be used to manufacture desired products. It is also realised that in certain cases mixtures of pulp entirely without short fibres are preferred for the top layer.
  • impermeable transfer belts there exist several different options of impermeable transfer belts to be used, but a preferred such impermeable transfer belt is TRANSBELT® (trademark belonging to Albany International).

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  • Paper (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Making Paper Articles (AREA)
EP00961297A 1999-09-07 2000-09-06 Method and paper machine for production of a liner comprising at least two layers Expired - Lifetime EP1218593B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9903166A SE514973C2 (sv) 1999-09-07 1999-09-07 Metod och pappersmaskin för framställning av en liner
SE9903166 1999-09-07
PCT/SE2000/001710 WO2001018309A1 (en) 1999-09-07 2000-09-06 Method and paper machine for production of a liner

Publications (2)

Publication Number Publication Date
EP1218593A1 EP1218593A1 (en) 2002-07-03
EP1218593B1 true EP1218593B1 (en) 2006-05-03

Family

ID=20416891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00961297A Expired - Lifetime EP1218593B1 (en) 1999-09-07 2000-09-06 Method and paper machine for production of a liner comprising at least two layers

Country Status (7)

Country Link
EP (1) EP1218593B1 (sv)
AT (1) ATE325233T1 (sv)
AU (1) AU7327000A (sv)
CA (1) CA2383864C (sv)
DE (2) DE60027739T2 (sv)
SE (1) SE514973C2 (sv)
WO (1) WO2001018309A1 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014210879A1 (de) 2014-06-06 2015-12-17 Voith Patent Gmbh Verfahren zur Herstellung von mehrlagigem Verpackungspapier, Papiermaschine zur Herstellung von mehrlagigem Verpackungspapier und mehrlagiges Verpackungspapier hergestellt nach diesem Verfahren

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6699361B1 (en) * 1999-09-07 2004-03-02 Metso Paper Karlstad Ab Papermaking device for producing a multilayer liner and associated methods
DE10226825A1 (de) * 2002-06-15 2003-12-24 Voith Paper Patent Gmbh Pressanordnung
DE102005001890A1 (de) 2005-01-15 2006-07-20 Voith Paper Patent Gmbh Pressanordnung
DE102005050282A1 (de) * 2005-10-20 2007-06-14 Voith Patent Gmbh Pressanordnung
FI20085782L (sv) 2008-08-22 2010-02-23 Metso Paper Inc Kartongmaskin
DE102010031440A1 (de) 2010-07-16 2012-01-19 Voith Patent Gmbh Verfahren und Maschine zur Herstellung einer Faserstoffbahn
FI20115486A0 (sv) 2011-05-19 2011-05-19 Metso Paper Inc Förfarande och framställningslinje för tillverkning av flerskiktsbane
WO2016083171A1 (de) * 2014-11-28 2016-06-02 Voith Patent Gmbh Vorrichtung zur herstellung einer faserstoffbahn
DE102016204969A1 (de) 2016-03-24 2017-05-18 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn in einer Papiermaschine
DE102016217726A1 (de) 2016-09-16 2018-03-22 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn in einer Papiermaschine
CN108884633B (zh) * 2016-03-24 2021-04-02 福伊特专利有限公司 用于制造多层的纤维幅的设备和方法
DE102017111869A1 (de) 2017-05-31 2018-12-06 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn
WO2018206216A1 (de) 2017-05-10 2018-11-15 Voith Patent Gmbh Vorrichtung und verfahren zur herstellung einer faserstoffbahn
DE102018119383A1 (de) * 2018-08-09 2020-02-13 Voith Patent Gmbh Maschine und Verfahren zur Herstellung einer Wellpappenrohpapierbahn
DE102020101913A1 (de) * 2020-01-28 2021-07-29 Voith Patent Gmbh Vorrichtung zur Herstellung von White Top Kraftliner und Verwendung dieser Vorrichtung zur Herstellung von White Top Kraftliner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107606A2 (en) * 1982-09-29 1984-05-02 Beloit Corporation Method of sheet transfer
US4943351A (en) * 1988-05-23 1990-07-24 Beloit Corporation Transfer apparatus and method
EP0652992A1 (de) * 1993-05-29 1995-05-17 Voith Gmbh J M Presse einer papiermaschine für dünne papiere.
US5792320A (en) * 1995-10-03 1998-08-11 Valmet Corporation Method and device for removing water from a paper or board web by pressing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197158A (en) * 1978-03-16 1980-04-08 Beloit Corporation Paper making machine press section
FI98540C (sv) * 1989-05-08 1997-07-10 Valmet Corp Anordning för att utforma en pappers- eller kartongbana av fibermaterial

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107606A2 (en) * 1982-09-29 1984-05-02 Beloit Corporation Method of sheet transfer
US4943351A (en) * 1988-05-23 1990-07-24 Beloit Corporation Transfer apparatus and method
EP0652992A1 (de) * 1993-05-29 1995-05-17 Voith Gmbh J M Presse einer papiermaschine für dünne papiere.
US5792320A (en) * 1995-10-03 1998-08-11 Valmet Corporation Method and device for removing water from a paper or board web by pressing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014210879A1 (de) 2014-06-06 2015-12-17 Voith Patent Gmbh Verfahren zur Herstellung von mehrlagigem Verpackungspapier, Papiermaschine zur Herstellung von mehrlagigem Verpackungspapier und mehrlagiges Verpackungspapier hergestellt nach diesem Verfahren

Also Published As

Publication number Publication date
DE60027739T2 (de) 2007-04-05
CA2383864A1 (en) 2001-03-15
SE9903166L (sv) 2001-03-08
DE60027739D1 (de) 2006-06-08
WO2001018309A1 (en) 2001-03-15
ATE325233T1 (de) 2006-06-15
SE9903166D0 (sv) 1999-09-07
SE514973C2 (sv) 2001-05-21
AU7327000A (en) 2001-04-10
DE20080375U1 (de) 2002-10-02
CA2383864C (en) 2008-07-15
EP1218593A1 (en) 2002-07-03

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