EP1266087B1 - Vorrichtung und verfahren zur herstellung von mehrlagigem papier oder karton - Google Patents

Vorrichtung und verfahren zur herstellung von mehrlagigem papier oder karton Download PDF

Info

Publication number
EP1266087B1
EP1266087B1 EP00986164A EP00986164A EP1266087B1 EP 1266087 B1 EP1266087 B1 EP 1266087B1 EP 00986164 A EP00986164 A EP 00986164A EP 00986164 A EP00986164 A EP 00986164A EP 1266087 B1 EP1266087 B1 EP 1266087B1
Authority
EP
European Patent Office
Prior art keywords
forming
wire
web
fines
dewatering
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
EP00986164A
Other languages
English (en)
French (fr)
Other versions
EP1266087A1 (de
Inventor
Jukka Kinnunen
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
Priority claimed from SE9904605A external-priority patent/SE516329C2/sv
Application filed by Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1266087A1 publication Critical patent/EP1266087A1/de
Application granted granted Critical
Publication of EP1266087B1 publication Critical patent/EP1266087B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • 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
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers
    • 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 an arrangement for forming a multilayered paper or paperboard from stock suspensions with papermaking fibres and fines, said arrangement including at least a first and a second forming unit, at least one of the forming units being of twin wire type and having a forming roll for forming a fibrous web having a higher content of fines at one side than at the other, and a couch device for couching together said fibrous web having a higher content of fines at one side with an other fibrous web to form the multilayered web.
  • the invention relates to a method of a multilayered paper or paperboard web from stock suspensions with papermaking fibres and fines, said method including the steps of:
  • the invention is particularly advantageously implemented when forming testliner, fluting, liner, white-top liner, gypsum board liner, and paperboard based on recycled pulp fibres.
  • the invention also can be implemented when forming other paper or paperboard webs.
  • bottom layer and top layer(s) for example in so-called fourdrinier forming units, or alternatively in twin-wire forming units of a paper or paperboard machine, in order to subsequently couch the layers together into a coherent web, which is pressed in a press section and dried in a drying section.
  • top and bottom layers in fourdrinier forming units, as a rule, results in a finished product with a higher internal bond strength, i.e. bond strength between the layers, than what is achievable if the top and bottom layers are formed in twin-wire forming units.
  • the patent publication DE 2 020 688 discloses a method for joining two webs of paper, paperboard or the like, more specifically a couching method, and a device for implementing the method.
  • the method comprises that the two webs run in the same direction during their manufacture and are joined in a such a way that the wire-side of the secondary web comes to rest on the top side of the primary web.
  • the device disclosed in DE 2 020 688 comprises a movable long wire (fourdrinier) as a primary wire, and at least one wire arranged in circulation above the long wire as a secondary wire.
  • each wire runs in the opposite direction in relation to the long wire, wherein each wire in circulation has been supplied with a transfer roll which is arranged so that it contacts the wire in circulation on an outer side and the long wire on its top side.
  • the patent publication DE 40 31 038 A 1 discloses a device for manufacturing a multilayer paper or multilayer paperboard by means of a primary wire, and a secondary wire arranged above this as twin-wire forming unit, which forms a top layer of the multilayer paper or paperboard onto a bottom layer.
  • the twin-wire forming unit has a forming roll as a breast roll for configurating the twin-wires.
  • a pressure application unit is arranged, wherein the waterline of the pulp suspension is within the region of the forming roll.
  • the disclosed device makes it possible to obtain a higher internal bond strength, since the dry content of the top layer is relatively low when the couching to the bottom layer takes place.
  • each twin-wire forming unit consists of a headbox, two wire loops arranged to define a common wire path for molding the web being formed in a sandwich-like manner, and drainage elements for each of the wire loops.
  • the common wire path of each forming unit has a first section including a curved suction drainage element or roll in the first lower wire loop, and a second section including opposing drainage ledges. Thereby, the drainage ledges are stationary at the upper side and designed to be resiliently pressable on the bottom side.
  • the drainage ledges of the upper and lower sides are arranged staggered with respect to each other in the direction of travel of the wire, wherein at least the ledges of the upper side are designed for suction. Furthermore, there is at least one third section which has at least one suction wire-separating element on one side.
  • the twin-wire forming units are arranged so that the same drainage elements are associated in each case with what will be the inner and the outer sides of each layer in the multilayer web. According to US 5,607,555, a very uniform paper is obtained in this way. Furthermore, it is reported that the contents of filler and/or fines can be displaced towards the outsides of the layers of the paper web by means of arranging the drainage ledges in a suitable way, depending on the prevailing requirements. As a result of this, a larger number of fibres are believed to be present on the two sides of the layers which rest against each other, wherein a better adhesion between the layers is obtained when they have been couched together.
  • a first object of the present invention is to provide an arrangement for forming a multilayered paper or paperboard web, which arrangement maximises the amount of fines which is retained when forming the layers included in the web, and ensures that those sides of the layers which have the highest content of fines are couched together with each other, so that the multilayered paper or paperboard web obtains a raised internal bond strength.
  • both of the forming units are of twin wire type and include a forming roll for forming a fibrous web having a higher content of fines at one side than at the other, and that the two forming are so arranged relative to each other as to place the web sides having the highest content of fines in contact with each other for couching together to form the multilayered web.
  • the forming rolls are open and adapted for making the content of fines in the fibre webs higher at the inner-wire side than at the outer wire-side during the initial dewatering, wherein the additional drainage members are adapted for maintaining the content of fines at least substantially unchanged at a high level at the inner-wire side during the continued dewatering, and the forming units are designed and arranged in relation to each other so that the two formed fibre webs are joined with the inner-wire sides against each other.
  • a second object of the present invention is to provide a method for forming a multilayered paper or paperboard web which method maximises the amount of fines that is retained when forming the layers included in the web, and ensures that those sides of the layers that have the highest content of fines are couched together with each other, so that the multilayer paper or paperboard web obtains a raised internal bond strength.
  • this second object of the present invention is achieved by:
  • the method additionally includes the steps of chosing open forming rolls for the initial dewatering, adapting them so that the content of fines in the fibrous webs becomes at least as high at the inner wire side as at the outer wire side during the initial dewatering, adapting the additional drainage members so that the content of fines will be maintained at least substantially unchanged at a high level at the inner wire side during ghe continued dewatering, and joining the two formed fibrous webs with the inner wire sides against each other.
  • open forming rolls means that a two-sided dewatering on the forming rolls, if possible, is accomplished without the application of any external suction.
  • open forming rolls is also intended to include embodiments of the invention where a suction forming roll with a low, or at the most, a moderate negative pressure is utilised in order to prevent all dewatering from taking place through the outer-wire at high wire speeds, but in which embodiments the main drainage impulse still is generated by the wire tension during the passage of the wires over the curved peripheral surface of the forming roll.
  • the arrangement according to the invention comprises a first 101; 201; 301; 401and a second forming unit 102; 202; 302; 402, wherein each forming unit is of a twin-wire type and has a forming roll 109; 209; 309; 409 and 111; 211; 311; 411, and an inner-wire 105; 205; 305; 405 and 107; 207; 307; 407 and an outer-wire 106; 206; 306; 406 and 108; 208; 308; 408 enclosing a portion of the circumference of each respective forming roll and thereby forming an initial, curved section of a forming zone for an initial dewatering and forming of a fibre web A and B, having an inner-wire side x and z supported by the inner-wire and an outer-wire side y and w supported by the outer-wire.
  • the curved section is followed by a section with additional drainage members 110; 210; 310; 410 and 112; 212; 312; 412 for a continued dewatering of the formed fibre web A and B, wherein vacuum transfer means 113, 114, 115; 213, 214, 215; 313, 314, 315, 327; 413, 414, 415, 427 are arranged for joining the fibre webs A, B in order to form a multilayered fibre web C, which is intended to be included in or to constitute the multilayered paper or paperboard web D after pressing and drying.
  • the forming rolls 109, 111; 209, 211; 309,311; 409, 411 are open, and adapted to make the content of fines in the fibre webs A, B higher at the inner-wire side x and z than at the outer-wire side y and w during the initial dewatering, while the additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 are adapted for maintaining the content of fines at least substantially unchanged at a high level at the inner-wire side x and z during the continued dewatering, and the forming units 101; 201; 301; 401 and 102; 202; 302; 402 are designed and arranged in relation to each other so that the two formed fibre webs A, B are joined with the inner-wire sides x and z against each other.
  • the above-mentioned open forming rolls of the arrangement according to the invention are adapted in order to provide a "gentle" dewatering, substantially without any shear forces, contrary to what is the case with vacuum or suction forming rolls of arrangements according to prior art, and enabling a high proportion of the supplied fines in the pulp suspensions to remain in the suspensions all the way to the continued dewatering.
  • a certain redistribution of the fines in a direction towards the forming rolls can occur in the pulp suspensions.
  • the specially adapted additional drainage members of the arrangement according to the invention do not comprise any elements at the inner-wire sides which generate high shear forces, such as drainage foils and the like. This is the reason why the main proportion of the fines are retained at the inner-wire sides also during the continued dewatering. During the continued dewatering, a minor portion of the fines can be suctioned out from the pulp suspensions on the side, i.e. the outer-wire side, where the additional drainage members preferably all are arranged in the arrangement according to the invention.
  • the arrangement according to the invention maximises the quantity of fines which is retained when forming the layers included in the web, and ensures that those sides of the layers which have the highest content of fines, i.e. the inner-wire sides, are couched together with each other so that the resulting multilayered paper or paperboard web obtains an increased internal bond strength in comparison to paper or paperboard webs which have been formed in arrangements according to prior art.
  • the above-mentioned additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 are arranged for completing the forming of the fibre webs A and B.
  • the forming can be regarded as completed when the main part of all free water has been removed, so that a coherent paper sheet has been formed.
  • the additional drainage members are all arranged at the outer-wires 106, 108; 206, 208; 306, 308; 406, 408 for dewatering the fibre webs from the outer wire-sides y and w.
  • additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 particularly advantageously comprise vacuum suction boxes with one or several vacuum zones adapted in order to remove substantially all free water from the fibre webs A and B before the joining.
  • additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 particularly advantageously comprise vacuum suction boxes with one or several vacuum zones adapted in order to remove substantially all free water from the fibre webs A and B before the joining.
  • additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 particularly advantageously comprise vacuum suction boxes with one or several vacuum zones adapted in order to remove substantially all free water from the fibre webs A and B before the joining.
  • the forming rolls 509, 511 have a diameter of about 1.4 - 1.8 m, and are arranged with a wire winding angle which is at least 80° for the initial dewatering.
  • one or several of the vacuum transfer means 513, 514 are arranged in order to constitute the additional drainage members for the continued dewatering.
  • the arrangement according to this embodiment comprises forming rolls having a large diameter and a large wire winding angle, something which provides an efficient dewatering and a very high dryness already after the initial dewatering. This embodiment enables a simplified arrangement, since the continued dewatering and the web transfer between the wires are provided by the same members.
  • the arrangement comprises headboxes 103, 104; 203, 204; 303,304; 403, 404, forming rolls 109, 111; 209, 211; 309, 311; 409, 411, additional drainage members 110, 112; 210, 212; 310; 312; 410, 412, and preferably also wires 105, 107; 205, 207; 305, 306, 307, 308; 405, 406, 407, 408, which are identical in the first 101; 201; 301; 401 and in the second 102; 202; 302; 402 forming unit.
  • This embodiment provides large cost advantages, since the number of spare parts in stock can be minimised.
  • the arrangement further comprises drive rolls 116, 117; 216, 217; 316, 317; 416, 417, guide rolls 118, 119; 218, 219; 318, 319; 418,419 and tensioning rolls 120, 121; 220, 221; 320, 321; 420, 421 which are identical in the first 101; 201; 301; 401 and the second 102; 202; 302; 402 forming unit.
  • the guide rolls are driven, or where the tensioning rolls function as guide rolls.
  • the first 101; 201; 301; 401 and the second 102; 202; 302; 402 forming unit are substantially mirror-invertedly identical.
  • the arrangement further comprises a first vacuum transfer means 113; 213 arranged for transferring a first fibre web A from the inner-wire 105; 205 to the outer-wire 106; 206 of the first forming unit 101; 201, a second vacuum transfer means 114; 214 arranged for transferring a second fibre web B from the inner-wire 107; 207 to the outer-wire 108; 208 of the second forming unit 102; 202, and a third vacuum transfer means 115; 215 arranged for transferring the second fibre web B from the outer-wire108; 208 of the second forming unit 102; 202 onto the first fibre web A in order to form the multilayered fibre web C.
  • these vacuum transfer means does not have as their task to achieve any dewatering, they are only intended to transfer a fibre web from one wire to another.
  • the arrangement 300; 400 comprises a bottom layer forming unit 328; 428 having an additional headbox 329; 429 for forming a bottom layer E onto at least one bottom-wire 330; 430, wherein at least one vacuum transfer means 313; 413 is arranged for transferring the first fibre web A onto the bottom layer E on the bottom-wire 330; 430.
  • the arrangement 300; 400 particularly advantageously comprises at least one additional vacuum transfer means 327; 427 arranged for transferring the first fibre web A from the outer-wire 306; 406 to the inner-wire 305; 405 of the first forming unit 301; 401.
  • the bottom layer forming unit of course also comprises suitable drainage members 331; 431.
  • the arrangement 200; 400 further comprises a top layer forming unit 222; 422 having an additional headbox 223; 423 for forming a top layer F on at least one top-wire 224; 424, and an additional vacuum transfer means 226; 426 arranged for transferring the top layer F onto the second fibre web B in order to form the multilayered fibre web C.
  • the top layer forming unit of course comprises suitable drainage members 325; 425.
  • the above-mentioned vacuum transfer means or additional vacuum transfer means of the arrangement according to the invention preferably comprises vacuum suction boxes 113, 114, 115; 213, 214, 215, 226; 313, 314, 315, 327; 413, 414, 415, 426, 427 and/or vacuum suction rolls.
  • the method according to the invention comprises that pulp suspensions with pulp fibres and fines are dewatered in a first 101; 201; 301; 401 and a second 102; 202; 302; 402 forming unit.
  • Each forming unit is of a twin-wire type and has a forming roll 109; 209; 309; 409 and 111; 211; 311; 411, and an inner-wire 105; 205; 305; 405 and 107; 207; 307; 407 and an outer-wire 106; 206; 306; 406 and 108; 208; 308; 408 enclosing a portion of the circumference of each forming roll, and thereby forming an initial, curved section of a forming zone in which initial dewatering and forming is performed of a fibre web A and B having an inner-wire side x and z supported by the inner-wire and an outer-wire side y and z supported by the outer-wire.
  • a continued dewatering of the formed fibre web A, B is performed by means of additional drainage members 110; 210; 310; 410 and 112; 212; 312; 412, whereafter the fibre webs A, B are joined by means of vacuum transfer means 113, 114, 115; 213, 214, 215; 313, 314, 315, 327; 413, 414, 415, 427 in order to form a multilayered fibre web C, intended to be included in or to constitute the multilayered paper or paperboard web D after pressing and drying.
  • open forming rolls 109, 111; 209, 211; 309, 311; 409, 411 are chosen for the initial dewatering and are adapted so that the content of fines in the fibre webs A, B becomes at least as high at the inner-wire side x and z as at the outer-wire side y and w during the initial dewatering, while the additional drainage members 110, 112; 210, 212; 310, 312; 410, 412 are adapted so that the content of fines is maintained at least substantially unchanged at a high level at the inner-wire side x and z, and wherein the two formed fibre webs A, B are joined with their inner-wire sides x and z against each other.
  • the initial dewatering results in a dry content of the pulp suspensions which is between 2 and 3%.
  • the continued dewatering primarily takes place in a direction towards the outer-wire sides y and w of the fibre webs A and B.
  • the highest possible content of retained fines is obtained at the inner-wire sides x and z, which thereafter are to be couched together, and consequently also the highest possible internal bond strength.
  • the continued dewatering particularly advantageously results in a dryness of the fibre webs A and B which is higher than about 6 to 8%.
  • the forming can be regarded as completed, and the fines present in the fibre webs are retained in a stable way even in case the fibre webs subsequently would be subjected to high vacuum (i.e. suction).
  • forming rolls 509, 511 having a diameter of about 1.4 - 1.8 m are chosen.
  • the wire winding angle is adapted to be at least 80°, wherein the initial dewatering results in a dry content of the pulp suspensions in the order of 6%.
  • the continued dewatering results in a dry content of the fibre webs A and B which is higher than about 6 - 8 %, wherein the continued dewatering is accomplished by means of one or several of the vacuum transfer means 513, 514.
  • a few of the vacuum transfer means 113, 114; 213, 214; 313, 314, 327; 413, 414, 427 provide an additional dewatering after the continued dewatering , resulting in a dryness higher than about 8 to 10% of the fibre webs A and B before they are joined into the multilayered fibre web C.
  • the high content of fines at the inner-wire sides x and z which is obtained by means of the method according to the invention makes it possible to obtain a high internal bond strength.
  • a first fibre web A is transferred from the inner-wire 105; 205 to the outer-wire 106; 206 of the first forming unit 101; 201, while a second fibre web B is transferred from the inner-wire 107; 207 to the outer-wire 108; 208 of the second forming unit 102; 202 in order to be transferred therefrom be onto the first fibre web A.
  • the method further comprises to form a bottom layer E on at least one bottom-wire 330; 430, and that the first fibre web A thereafter is transferred onto the bottom layer E.
  • the first fibre web A is particularly advantageously transferred from the outer-wire 306; 406 to the inner-wire 305; 405 of the first forming unit 301; 401 before the first fibre web A is transferred.
  • the method further comprises to form a top layer F on at least one top-wire 224; 424, and that the top layer F thereafter is transferred onto the second fibre web B.
  • FIG. 1 an arrangement 100 according to the invention is shown in greater detail in a configuration which is particularly well suited for forming testliner or fluting having a top layer within the grammage range 30-100 g/m 2 and a base layer within the range 50-150 g/m 2 .
  • the arrangement could also be used when forming other types of paper or paperboard webs in cases where it is desired to form and couch together two different layers.
  • a very compact and cost efficient unit is obtained in this configuration, since a number of the parts included in the two twin-wire forming units 101, 102 are identical in both units.
  • the forming rolls 110, 111 are open and are not vacuum suction rolls, no significant redistribution of fines takes place in the pulp suspension, and a relatively uniform sheet structure in the Z-direction can be obtained. Furthermore, during the forming, the additional drainage members 110, 112 are acting exclusively on the outer-wire sides y and w, B, which are not to be couched together, of the fibre webs A and. For this reason, the content of fines at the opposing inner-wire sides x and z, which are to be couched together, remains unchanged at a high level (see Fig. 5).
  • Fig. 2 shows an arrangement 200 according to the invention in greater detail in a configuration which is particularly well suited for liner, "white top” liner, or gypsum board liner.
  • this arrangement could also be utilised when forming other types of paper or paperboard webs where it is desirable to form and couch together three different plies.
  • the arrangement 200 can be said to be of the type "Top-side Down", since a top layer is formed in the twin-wire forming unit 201, a middle layer is formed in the twin-wire forming unit 202, and a bottom layer is formed in the fourdrinier forming unit 222.
  • the grammage of the top layer advantageously can be 40-80 g/m 2 , of the middle layer 55-170 g/m 2 , and of the bottom layer 30-50 g/m 2 , but it is also conceivable with other grammage intervals.
  • Fig. 3 shows another arrangement 300 according to the invention in greater detail, also in a configuration which is particularly well suited for liner, "white top” liner or gypsum board liner.
  • this arrangement could also be utilised when forming other types of paper or paperboard webs where it is desired to form and couch together three different layers.
  • the arrangement in Fig. 3 is of the type "Top-side Up", i.e. a bottom layer is formed in the fourdrinier forming unit 328, a middle layer is formed in the twin-wire forming unit 301, and a top layer is formed in the twin-wire forming unit 302.
  • the grammage of the bottom layer advantageously can be 43-80 g/m 2 , of the middle layer 55-155 g/m 2 , and of the top layer 40-65 g/m 2 , but it is also conceivable with other grammage intervals.
  • Fig. 4 discloses an arrangement 400 according to the invention in greater detail, now in a configuration which is particularly well suited for liner or paperboard, and particularly for paperboard based on recycled fibres. However, this arrangement could also be utilised when forming other types of paper or paperboard webs where it is desirable to be able to form and couch together four different layers (sheets).
  • a bottom layer is formed in the fourdrinier forming unit 428
  • a single middle layer or alternatively a first middle layer is formed in the twin-wire forming unit 402
  • an underliner or alternatively a second middle layer is formed in the twin-wire forming unit 402
  • a top layer is formed in the fourdrinier forming unit 422.
  • the grammage of the above-mentioned bottom layer can advantageously be 25-90 g/m 2 , of the above-mentioned single middle layer 40-200 g/m 2 , of the above-mentioned first middle layer 60-180 g/m 2 , of the above-mentioned underliner 30-90 g/m 2 , of the above mentioned second middle layer 60-180 g/m 2 , and of the above-mentioned top layer 30-60 g/m 2 .
  • the attached Fig. 6 illustrates the relative percentage of fines F as a function of the thickness Z of a first fibre web from the bottom BO to the top TO, wherein the first fibre web has been formed in a forming unit of an arrangement according to the invention, and a specimen for analysis of fines content has been extracted before joining to a second fibre web.
  • the arrangements 100; 200; 300; 400; 500 in Figs 1-4 and 7 all are provided with so-called forming boards 132, 133; 232, 233; 332, 333; 432, 433; 532, 533 with support foils inside the inner-wire loops downstream their forming rolls 109, 111; 209, 211; 309, 311; 409, 411; 509, 511.
  • the wire tables/support foils shown in the figures do not provide any drainage function.

Landscapes

  • Paper (AREA)
  • Making Paper Articles (AREA)

Claims (24)

  1. Vorrichtung zum Herstellen einer mehrlagigen Papier- oder Kartonbahn (D) aus Ganzstoffsuspensionen mit Papierherstellfasern und -feinstoffen, wobei die Vorrichtung zumindest eine erste (101; 201; 301; 401; 501) und eine zweite (102; 202; 302; 402; 502) Formereinheit hat, wobei die beiden Formereinheiten von der Doppelsiebart sind und eine Formerwalze (109; 209; 309; 409; 509; 111; 211; 311; 411; 511) für das Ausbilden einer Faserbahn (A; B) haben, die einen höheren Gehalt an Feinstoffen an einer Seite (x; z) als an der anderen (y; w) hat, und eine Gautschvorrichtung (117; 217; 316, 317; 416, 417) hat für ein miteinander erfolgendes Gautschen der Faserbahn (A; B) mit einem höheren Gehalt an Feinstoffen an einer Seite mit einer anderen Faserbahn (B; A) zum Ausbilden der mehrlagigen Bahn (D),
    dadurch gekennzeichnet, dass
    die beiden Formereinheiten (101; 201; 301; 401; 501; 102; 202; 302; 402; 502) so relativ zueinander angeordnet sind, dass die Bahnseiten (x; z), die den höchsten Gehalt an Feinstoffen haben, miteinander in Kontakt angeordnet sind, um sie miteinander zu gautschen, um die mehrlagige Bahn (D) auszubilden.
  2. Vorrichtung gemäß Anspruch 1, wobei
    jede Formereinheit von einer Doppelsiebart ist und eine Formerwalze (109; 209; 309; 409; 509; 111; 211; 311; 411; 511) und ein inneres Sieb (105; 205; 305; 405; 107; 207; 307; 407) und ein äußeres Sieb (106; 206; 306; 406; 108; 208; 308; 408) hat, die einen Abschnitt von dem Umfang von jeder jeweiligen Formerwalze umhüllen und dadurch einen anfänglichen gekrümmten Abschnitt einer Formerzone ausbilden für ein anfängliches Entwässern und Formen einer Faserbahn (A; B), wobei eine Innensiebseite (x; z) durch das innere Sieb gestützt ist und eine Außensiebseite (y; w) durch das äußere Sieb gestützt ist,
    und wobei dem gekrümmten Abschnitt ein Abschnitt mit zusätzlichen Entwässerungselementen (110; 210; 310; 410; 513; 112; 212; 312; 412; 514) folgt für ein fortlaufendes Entwässern der ausgebildeten Faserbahn (A; B), und wobei Unterdruckübertragungseinrichtungen (113, 114, 115; 213, 214, 215; 313, 314, 315, 327; 413, 414, 415, 427; 513, 514, 515) angeordnet sind für ein Verbinden der Faserbahnen (A; B), um eine mehrlagige Faserbahn (C) auszubilden, die in der mehrlagigen Papier- oder Kartonbahn (D) umfasst sein soll oder diese bilden soll nach einem Pressen und Trocknen,
    dadurch gekennzeichnet, dass
    die Formerwalzen (109, 111; 209, 211; 309, 311; 409, 411; 509, 511) offen sind und daran angepasst sind, den Gehalt an Feinstoffen in den Faserbahnen (A; B) an der Innensiebseite (x; z) höher zu gestalten als an der Außensiebseite (y; w) während des anfänglichen Entwässerns, und
    dass die zusätzlichen Entwässerungselemente (110, 112; 210, 212; 310, 312; 410, 412; 513, 514) daran angepasst sind, den Gehalt an Feinstoffen zumindest im Wesentlichen unverändert bei einer hohen Höhe an der Innensiebseite (x; z) während des fortgesetzten Entwässerns zu halten, und
    dass die Formereinheiten (101; 201; 301; 401; 501; 102; 202; 302; 402; 502) so gestaltet sind und in Bezug aufeinander so angeordnet sind, dass die beiden ausgebildeten Faserbahnen (A; B) mit den Innensiebseiten (x; z) aneinander verbunden werden.
  3. Vorrichtung gemäß Anspruch 2, wobei
    die zusätzlichen Entwässerungselemente (110, 112; 210, 212; 310, 312; 410, 412) so angeordnet sind, dass das Ausbilden der Faserbahnen (A; B) vollendet wird,
    dadurch gekennzeichnet, dass
    die zusätzlichen Entwässerungselemente sämtlich an den äußeren Sieben (106, 108; 206, 208; 306, 308; 406, 408) angeordnet sind für ein Entwässern der Faserbahnen (A; B) von den Außensiebseiten (y; w).
  4. Vorrichtung gemäß Anspruch 2 oder 3,
    dadurch gekennzeichnet, dass
    die zusätzlichen Entwässerungselemente (110, 112; 210, 212; 310, 312; 410, 412) Unterdrucksaugkästen mit einer oder mehreren Saugzonen haben, die daran angepasst sind, im Wesentlichen sämtliches freies Wasser aus den Faserbahn (A; B) vor dem Verbinden zu entfernen.
  5. Vorrichtung gemäß Anspruch 2,
    dadurch gekennzeichnet, dass
    die Formerwalzen (509, 511) einen Durchmesser von ungefähr 1,4 bis 1,8 m haben und mit einer Siebumhüllung um die Formerwalze von zumindest 80° für ein anfängliches Entwässern angeordnet sind, wobei eine oder mehrere von den Unterdruckübertragungseinrichtungen (513, 514) angeordnet ist / sind, um die zusätzlichen Entwässerungselemente für das fortgesetzte Entwässern zu bilden.
  6. Vorrichtung gemäß einem der Ansprüche 2 bis 5,
    dadurch gekennzeichnet, dass
    die Vorrichtung Stoffauflaufkästen (103, 104; 203; 204; 303, 304; 403, 404), Formerwalzen (109, 111; 209; 211; 309, 311; 409, 411), zusätzliche
    Entwässerungselemente (110, 112; 210, 212; 310, 312; 410, 412) und außerdem ebenfalls Siebe (105, 107; 205, 207; 305, 306, 307, 308; 405, 406, 407, 408), wobei sämtliche von ihnen bei der ersten (101; 201; 301; 401) und der zweiten Formereinheit (102; 202; 302; 402) identisch sind, hat.
  7. Vorrichtung gemäß einem der Ansprüche 2 bis 6,
    dadurch gekennzeichnet, dass
    die Vorrichtung Antriebswalzen (116, 117; 216, 217; 316, 317; 416, 417), Führungswalzen (118, 119; 218, 219; 318, 319; 418, 419) und Spannwalzen (120, 121; 220, 221; 320, 321; 420, 421), wobei sämtliche von ihnen bei der ersten (101; 201; 301; 401) und der zweiten (102; 202; 302; 402) Formereinheit identisch sind, hat.
  8. Vorrichtung gemäß einem der Ansprüche 2 bis 7,
    dadurch gekennzeichnet, dass
    die erste (101; 201; 301; 401) und die zweite (102; 202; 302; 402) Formereinheit im Wesentlichen umgekehrt identisch sind.
  9. Vorrichtung gemäß einem der Ansprüche 2 bis 8,
    dadurch gekennzeichnet, dass
    die Vorrichtung des Weiteren eine erste Unterdruckübertragungseinrichtung (113; 213), die für ein Übertragen der ersten Faserbahn (A) von dem inneren Sieb (105; 205) zu dem äußeren Sieb (106; 206) der ersten Formereinheit (101; 201) angeordnet ist, eine zweite Unterdruckübertragungseinrichtung (114; 214), die für ein Übertragen einer zweiten Faserbahn (B) von dem inneren Sieb (107; 207) zu dem äußeren Sieb (108; 208) der zweiten Formereinheit (102; 202) angeordnet ist, und eine dritte Unterdruckübertragungseinrichtung (115; 215) hat, die für ein Übertragen der zweiten Faserbahn (B) von dem äußeren Sieb (108; 208) von der zweiten Formereinheit (102; 202) zu der ersten Faserbahn (A) angeordnet ist, um die mehrlagige Faserbahn (C) auszubilden.
  10. Vorrichtung gemäß einem der Ansprüche 2 bis 8,
    dadurch gekennzeichnet, dass
    die Vorrichtung (300; 400) eine Bodenlagenformereinheit (328; 428) hat, die einen zusätzlichen Stoffauflaufkasten (329; 429) hat für ein Ausbilden einer Bodenlage (E) an zumindest einem Bodensieb (330; 430), und
    dass zumindest eine
    Unterdruckübertragungseinrichtung (313; 413) angeordnet ist, um die erste Faserbahn (A) zu der Bodenlage (E) an dem Bodensieb (330; 430) zu übertragen.
  11. Vorrichtung gemäß Anspruch 10,
    dadurch gekennzeichnet, dass
    die Vorrichtung (300; 400) zumindest eine zusätzliche Unterdruckübertragungseinrichtung (327; 427) hat, die für ein Übertragen der ersten Faserbahn (A) von dem äußeren Sieb (306; 406) zu dem inneren Sieb (305; 405) von der ersten Formereinheit (301; 401) angeordnet ist.
  12. Vorrichtung gemäß einem der Ansprüche 2 bis 11,
    dadurch gekennzeichnet, dass
    die Vorrichtung (200; 400) des Weiteren eine Decklagenformereinheit (222; 422), die einen zusätzlichen Stoffauflaufkasten (223; 423) hat für ein Ausbilden einer Decklage (F) an zumindest einem oberen Sieb (224; 424), und eine zusätzliche Unterdruckübertragungseinrichtung (226; 426) hat, die angeordnet ist für ein Übertragen der Decklage (F) zu der zweiten Faserbahn (B), um die mehrlagige Faserbahn (C) auszubilden.
  13. Vorrichtung gemäß einem der Ansprüche 2 bis 12,
    dadurch gekennzeichnet, dass
    die Unterdruckübertragungseinrichtung oder die zusätzliche Unterdruckübertragungseinrichtung Unterdrucksaugkästen (113, 114, 115; 213, 214, 215, 226; 313, 314, 315, 327; 413, 414, 415, 426, 427) und / oder Unterdrucksaugwalzen hat.
  14. Verfahren zum Ausbilden einer mehrlagigen Papier- oder Kartonbahn (D) aus Ganzstoffsuspensionen mit Papierherstellfasern und -feinstoffen, wobei das Verfahren die folgenden Schritte aufweist:
    Ausbilden einer ersten Faserbahn (A), die einen höheren Gehalt an Feinstoffen an einer Seite (x) als an der anderen (y) hat, in einer ersten Formereinheit (101; 201; 301; 401; 501) der Doppelsiebart, die eine Formerwalze (109; 209; 309; 409; 509) hat,
    Ausbilden einer zweiter Faserbahn (B) in einer zweiten Formereinheit (102; 202; 302; 402; 502),
    Gautschen der ausgebildeten Bahnen (A; B) miteinander, um die mehrlagige Bahn (D) auszubilden,
    Anwenden einer Doppelsiebformereinheit mit einer Formerwalze (111; 211; 311; 411; 511) als zweite Formereinheit (102; 202; 302; 402; 502),
    Ausbilden ebenfalls der zweiten Faserbahn (B) mit einem höheren Gehalt an Feinstoffen an einer Seite (z) als an der anderen (w) und
    Positionieren der Bahnen (A; B) in derartiger Weise, dass sichergestellt ist, dass jene Seiten (x; z) der Bahnen, die den höchsten Gehalt an Feinstoffen haben, miteinander gegautscht werden, um die mehrlagige Bahn (D) auszubilden.
  15. Verfahren gemäß Anspruch 14 mit
    einem Entwässern der Ganzstoffsuspensionen mit Papierherstellfasern und -feinstoffen in einer ersten und einer zweiten Formereinheit (101; 201; 301; 401; 501; 102; 202; 302; 402; 502), wobei jede Formereinheit von einer Doppelsiebart ist und eine Formerwalze (109; 209; 309; 409; 509; 111; 211; 311; 411; 511) und ein inneres Sieb (105; 205; 305; 405; 107; 207; 307; 407) und ein äußeres Sieb (106; 206; 306; 406; 108; 208; 308; 408) hat, die einen Abschnitt von dem Umfang von jeder jeweiligen Formerwalze umhüllen, und dadurch einen anfänglichen gekrümmten Abschnitt einer Formerzone auszubilden, in der ein anfängliches Entwässern und Formen von einer Faserbahn (A; B) ausgeführt wird, die eine Innensiebseite (x; z) hat, die durch das innere Sieb gestützt ist, und eine Außensiebseite (y; w) hat, die durch das äußere Sieb gestützt wird, wobei das Verfahren des Weiteren die folgenden Schritte aufweist: Fortsetzen des Entwässerns der ausgebildeten Faserbahn (A; B) mittels zusätzlichen Entwässerungselementen (110; 210; 310; 410; 513; 112; 212; 312; 412; 514) in einem Abschnitt stromabwärtig von dem gekrümmten Abschnitt und Verbinden der Faserbahnen (A; B) mittels Unterdruckübertragungselementen (113, 114, 115; 213, 214, 215; 313, 314, 315, 327; 413, 414, 415, 427; 513, 514, 515), um eine mehrlagige Bahn (C) auszubilden, die in der mehrlagigen Papier- oder Kartonbahn (D) umfasst sein soll oder diese bilden soll nach einem Pressen und Trocknen,
    mit den folgenden Schritten
    Auswählen von offenen Formerwalzen (109, 111; 209, 211; 309, 311; 409, 411; 509, 511) für das anfängliche Entwässern,
    Anpassen von ihnen in derartiger Weise, dass der Gehalt an Feinstoffen in den Faserbahnen (A; B) zumindest an der Innensiebseite (x; z) so hoch wie an der Außensiebseite (y; w) während des anfänglichen Entwässerns wird,
    Anpassen der zusätzlichen Entwässerungselemente (110, 112; 210, 212; 310, 312; 410, 412; 513, 514) derart, dass der Gehalt an Feinstoffen zumindest im Wesentlichen unverändert bei einer hohen Höhe an der Innensiebseite (x; z) während des fortgesetzten Entwässerns gehalten wird, und
    Verbinden der beiden ausgebildeten Faserbahnen (A; B) mit den Innensiebseiten (x; z) aneinander.
  16. Verfahren gemäß Anspruch 15 mit dem folgenden Schritt
    Ausführen des anfänglichen Entwässerns in derartiger Weise, dass es zu einer Trockenheit der Ganzstoffsuspensionen führt, die zwischen 2 und 3 % liegt.
  17. Verfahren gemäß Anspruch 15 oder 16, mit dem folgenden Schritt
    Ausführen des fortgesetzten Entwässerns hauptsächlich in einer Richtung zu den Außensiebseiten (y; w) der Faserbahnen (A; B) hin.
  18. Verfahren gemäß einem der Ansprüche 15 bis 17 mit dem folgenden Schritt:
    Ausführen des fortgesetzten Entwässerns in derartiger Weise, dass es zu einer Trockenheit der Faserbahnen (A; B) führt, die höher als ungefähr 6 bis 8 % ist.
  19. Verfahren gemäß Anspruch 15 mit den folgenden Schritten:
    Wählen von Formerwalzen (509, 511) mit einem Durchmesser von ungefähr 1,4 bis 1,8 m
    Anpassen der Siebumhüllung um die Formerwalze derart, dass sie ungefähr 80° beträgt,
    Ausführen des anfänglichen Entwässerns bis zu einem Ergebnis bei der Trockenheit der Ganzstoffsuspensionen in der Größenordnung 6 %,
    Ausführen des fortgesetzten Entwässerns bis zu einem Ergebnis bei der Trockenheit der Faserbahnen (A; B), die höher ist als ungefähr 6 bis 8 %, und
    Vollenden des fortgesetzten Entwässerns mittels einer oder mehreren der Unterdruckübertragungseinrichtungen (513, 514).
  20. Verfahren gemäß einem der Ansprüche 15 bis 17 mit dem folgenden Schritt:
    Anwenden von einigen wenigen der Unterdruckübertragungseinrichtungen (113, 114; 213, 214; 313, 314, 327; 413, 414, 427) zum Ausführen eines zusätzlichen Entwässerns nach dem fortgesetzten Entwässern, um so eine Trockenheit zu erreichen, die höher als ungefähr 8 bis 10 % ist, von den Faserbahnen (A; B), bevor sie in der mehrlagigen Faserbahn (C) verbunden werden.
  21. Verfahren gemäß einem der Ansprüche 15 bis 20 mit den folgenden Schritten:
    Übertragen einer ersten Faserbahn (A) von dem inneren Sieb (105; 205) zu dem äußeren Sieb (106; 206) von der ersten Formereinheit (101; 201), und
    Übertragen einer zweiten Faserbahn (B) von dem inneren Sieb (107; 207) zu dem äußeren Sieb (108; 208) von der zweiten Formereinheit (102; 202), damit diese von dort zu der ersten Faserbahn (A) übertragen wird.
  22. Verfahren gemäß einem der Ansprüche 15 bis 21 mit den folgenden Schritten:
    des weiteren erfolgendes Ausbilden einer Bodenlage (E) an zumindest einem Bodensieb (330; 430), und danach erfolgendes Übertragen der ersten Faserbahn (A) zu der Bodenlage (E).
  23. Verfahren gemäß Anspruch 22 mit dem folgenden Schritt:
    Übertragen der ersten Faserbahn (A) von dem äußeren Sieb (306; 406) zu dem inneren Sieb (305; 405) von der ersten Formereinheit (301; 401) vor dem Übertragen der ersten Faserbahn (A).
  24. Verfahren gemäß einem der Ansprüche 15 bis 23 mit den folgenden Schritten:
    des weiteren erfolgendes Ausbilden einer Decklage (F) an zumindest einem oberen Sieb (224; 424), und
    danach erfolgendes Übertragen der Decklage (F) zu der zweiten Faserbahn (B).
EP00986164A 1999-12-15 2000-12-15 Vorrichtung und verfahren zur herstellung von mehrlagigem papier oder karton Expired - Lifetime EP1266087B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9904605 1999-12-15
SE9904605A SE516329C2 (sv) 1999-12-15 1999-12-15 Arrangemang och förfarande för formning av en flerskiktad pappers- eller kartongbana
US17197999P 1999-12-23 1999-12-23
US171979P 1999-12-23
PCT/SE2000/002570 WO2001044569A1 (en) 1999-12-15 2000-12-15 Arrangement and method for forming a multilayered paper or paperboard web

Publications (2)

Publication Number Publication Date
EP1266087A1 EP1266087A1 (de) 2002-12-18
EP1266087B1 true EP1266087B1 (de) 2006-07-26

Family

ID=26663696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00986164A Expired - Lifetime EP1266087B1 (de) 1999-12-15 2000-12-15 Vorrichtung und verfahren zur herstellung von mehrlagigem papier oder karton

Country Status (8)

Country Link
EP (1) EP1266087B1 (de)
JP (1) JP2003528990A (de)
CN (1) CN1208515C (de)
AT (1) ATE334259T1 (de)
AU (1) AU778169B2 (de)
CA (1) CA2394283C (de)
DE (1) DE60029639T2 (de)
WO (1) WO2001044569A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10232125A1 (de) * 2002-07-16 2004-02-05 Voith Paper Patent Gmbh Siebpartie zur Herstellung einer mehrlagigen Faserstoffbahn
DE102008040688A1 (de) * 2008-07-24 2010-01-28 Voith Patent Gmbh Verfahren zur Optimierung der Energiebilanz in Formiereinheiten in Maschinen zur Herstellung von Faserstoffbahnen und Formiereinheit
WO2012041392A1 (en) * 2010-10-01 2012-04-05 Metso Paper, Inc. Device and method for manufacturing a web consisting of multiple layers
JP5716378B2 (ja) * 2010-12-17 2015-05-13 王子ホールディングス株式会社 繊維シートの製造装置
CN104213476B (zh) * 2014-08-18 2016-08-31 湖北欧华达纤维科技股份有限公司 高密度环保再生纤维板及其生产方法
AT519242B1 (de) * 2017-02-03 2018-05-15 Andritz Ag Maschf Verfahren zur herstellung einer mehrlagigen faserstoffbahn mit weisser decklage
CN107460760B (zh) * 2017-09-13 2019-03-01 长兴恒大电子材料有限公司 一种热转移纸生产加工工艺
DE102022107202A1 (de) 2022-03-28 2023-09-28 Voith Patent Gmbh Mehrlagenfaserstoffbahn

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1722503A (en) * 1925-07-06 1929-07-30 William H Millspaugh Paper-making method and machine
US5468348A (en) * 1990-07-10 1995-11-21 Beloit Technologies, Inc. Multi-ply web former and method
DE4031038C2 (de) * 1990-10-01 1997-01-23 Voith Sulzer Papiermasch Gmbh Vorrichtung zum Herstellen eines mehrlagigen Papiers oder Kartons
DE4402273C2 (de) * 1994-01-27 1995-11-23 Voith Gmbh J M Papiermaschine zur Herstellung mehrlagiger Papierbahnen
DE4402274C2 (de) * 1994-01-27 1995-04-06 Voith Gmbh J M Doppelsiebpartie
DE19651493A1 (de) * 1996-12-11 1998-06-18 Voith Sulzer Papiermasch Gmbh Siebpartie und Verfahren zum Formen einer mehrlagigen Faserstoffbahn
DE19920438A1 (de) * 1999-05-04 2000-11-09 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zum Herstellen einer mehrlagigen Faserstoffbahn

Also Published As

Publication number Publication date
AU778169B2 (en) 2004-11-18
WO2001044569A1 (en) 2001-06-21
CA2394283C (en) 2008-08-12
CN1208515C (zh) 2005-06-29
CN1409787A (zh) 2003-04-09
ATE334259T1 (de) 2006-08-15
CA2394283A1 (en) 2001-06-21
AU2245001A (en) 2001-06-25
JP2003528990A (ja) 2003-09-30
DE60029639D1 (de) 2006-09-07
DE60029639T2 (de) 2007-07-26
EP1266087A1 (de) 2002-12-18

Similar Documents

Publication Publication Date Title
KR100530289B1 (ko) 저밀도 탄성 웹 및 그의 제조 방법
JP4262773B2 (ja) 多層ファイバウェブを形成するためのワイヤセクション
KR970703467A (ko) 셀룰로스 섬유 구조물에 대해 개선된 섬유 지지력을 제공하는 다층 제지용 벨트 및 이를 사용하여 제조된 셀룰로즈 섬유 구조물(multiple layer papermaking belt providing improved fiber support for cellul osic fibrous structures, and cellulosic fibrous structures produced thereby)
US6413369B2 (en) Arrangement and method for forming a multilayered paper or paperboard web
EP1266087B1 (de) Vorrichtung und verfahren zur herstellung von mehrlagigem papier oder karton
CA2383864C (en) Method and paper machine for production of a liner
US20020162636A1 (en) Sheet forming device and method for sheet forming
EP1021620B1 (de) Verfahren und vorrichtung zur herstellung einer mehrlagigen bahn
US6254728B1 (en) Method and machine for manufacturing a fibrous pulp web
KR100336800B1 (ko) 웨트레이드 종이 웨브 및 여러 겹의 종이 제품
US20020060003A1 (en) Machine for the manufacture of a fibrous plasterboard web
US4961824A (en) Method for manufacturing multilayer board
EP0519920B1 (de) Überführvorrichtung bei einer gautschpresse sowie seiner verfahren
EP0233058B1 (de) Verfahren und Einrichtung zur Herstellung von mehrschichtigem Karton
US6702926B1 (en) Process for forming a multi-ply fiber web
CN112567094A (zh) 用于制造瓦楞纸板原纸幅的机器和方法
Nordström Multi-ply forming of linerboard by successive twin-wire roll forming
US6932886B2 (en) Multi-ply fibrous plasterboard web
Nordström et al. Effect of refining on strength efficiency in twin-wire roll forming of never-dried unbleached softwood kraft pulp
EP0072188A2 (de) Maschine zur Herstellung von Bahnen
JPH0346595B2 (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020711

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: METSO PAPER, INC.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60029639

Country of ref document: DE

Date of ref document: 20060907

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061026

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061231

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070511

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060726

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20091218

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20101214

Year of fee payment: 11

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20101215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101215

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20111222

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20111227

Year of fee payment: 12

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 334259

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121215

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60029639

Country of ref document: DE

Effective date: 20130702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130702

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121215