EP3333315B1 - Section de formation - Google Patents

Section de formation Download PDF

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Publication number
EP3333315B1
EP3333315B1 EP16202857.5A EP16202857A EP3333315B1 EP 3333315 B1 EP3333315 B1 EP 3333315B1 EP 16202857 A EP16202857 A EP 16202857A EP 3333315 B1 EP3333315 B1 EP 3333315B1
Authority
EP
European Patent Office
Prior art keywords
forming
roll
wire
forming section
twin
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.)
Active
Application number
EP16202857.5A
Other languages
German (de)
English (en)
Other versions
EP3333315A1 (fr
Inventor
Antti Poikolainen
Teuvo Virkkunen
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
Valmet Technologies 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 Valmet Technologies Oy filed Critical Valmet Technologies Oy
Priority to EP16202857.5A priority Critical patent/EP3333315B1/fr
Priority to CN201711255641.1A priority patent/CN108179651B/zh
Publication of EP3333315A1 publication Critical patent/EP3333315A1/fr
Application granted granted Critical
Publication of EP3333315B1 publication Critical patent/EP3333315B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

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  • Paper (AREA)

Claims (9)

  1. Section de formation comprenant une unité de formation à double fil formée entre un fil inférieur (10) et un fil supérieur (20), dans lequel un premier moyen de déshydratation de l'unité de formation à double fil est un rouleau de formation (13) ayant un angle d'enroulement (13V), dans lequel l'unité de formation à double fil suivant le rouleau de formation (13) est un rouleau à manchon (50) comprenant un arbre support stationnaire (51) et une boucle de ceinture (53) qui est amenée à encercler l'arbre support stationnaire (51), lequel rouleau à manchon (50) comprend en outre au moins une zone de déshydratation curvilinéaire (K) consistant en deux courbes partielles, de sorte que le rayon de courbure (K1) d'une première courbe partielle est supérieur au rayon de courbure (K2) d'une seconde courbe partielle suivant la première courbe partielle (K1) dans le sens de déplacement de la boucle de ceinture (53), caractérisée en ce que le parcours entre le rouleau de formation (13) et le rouleau à manchon (50) est exempt de déshydratation sous vide, c'est-à-dire que, entre le rouleau de formation (13) et le rouleau à manchon (50), aucune déshydratation sous vide n'est présente.
  2. Section de formation selon la revendication 1, caractérisée en ce que le rouleau à manchon (50) comprend des éléments supports (52) supportés chacun à une distance des autres sur l'arbre support stationnaire (51), que la boucle de ceinture (53) amenée à encercler l'arbre support stationnaire (51) est supportée par les éléments supports (52), et que la boucle de ceinture (53) est imperméable.
  3. Section de formation selon la revendication 1 ou 2, caractérisée en ce que la distance (L) entre le rouleau de formation (13) et le rouleau à manchon (50), laquelle distance est mesurée entre le point où l'angle d'enroulement (13V) des fils supérieur et inférieur (10, 20) se termine sur le rouleau de formation (13), et que le point où le contact des fils inférieur et supérieur (10, 20) sur le rouleau à manchon (50) commence est de 0,2 à 2 mètres, avantageusement 0,3 à 1,5 mètres.
  4. Section de formation selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'unité de formation comprend premièrement une pièce à fil unique suivie de la pièce à double fil.
  5. Section de formation selon la revendication 4, caractérisée en ce que la pièce à fil unique est sensiblement horizontale ou inclinée.
  6. Section de formation selon l'une quelconque des revendications 4 ou 5, caractérisée en ce que la pièce à fil unique comprend un patin de formation (17) doté d'un pont (18) et d'ouvertures (19) dans le pont (18).
  7. Section de formation selon l'une quelconque des revendications 1 à 6, caractérisée en ce que, à distance du rouleau à manchon (50), l'unité de formation à double fil se termine lorsque le parcours du fil supérieur (20) se détourne du fil inférieur (10) et que la partie terminale de l'unité de formation est formée sous forme d'une pièce à fil unique.
  8. Section de formation selon la revendication 3, caractérisée en ce que la hauteur globale de la section de formation est inférieure à 8 mètres.
  9. Section de formation selon la revendication 3, caractérisée en ce que le point le plus haut du rouleau à manchon (50) est à une position verticale plus haute que le point le plus bas du rouleau de formation (13).
EP16202857.5A 2016-12-08 2016-12-08 Section de formation Active EP3333315B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16202857.5A EP3333315B1 (fr) 2016-12-08 2016-12-08 Section de formation
CN201711255641.1A CN108179651B (zh) 2016-12-08 2017-12-04 成形部

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16202857.5A EP3333315B1 (fr) 2016-12-08 2016-12-08 Section de formation

Publications (2)

Publication Number Publication Date
EP3333315A1 EP3333315A1 (fr) 2018-06-13
EP3333315B1 true EP3333315B1 (fr) 2019-05-01

Family

ID=57530557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16202857.5A Active EP3333315B1 (fr) 2016-12-08 2016-12-08 Section de formation

Country Status (2)

Country Link
EP (1) EP3333315B1 (fr)
CN (1) CN108179651B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3913132A1 (fr) * 2020-05-20 2021-11-24 Valmet Technologies Oy Bande pour un rouleau à bande et son utilisation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE410482B (sv) * 1978-02-15 1979-10-15 Karlstad Mekaniska Ab Forfarande och anordning vid en dubbelviraformare
AT379622B (de) * 1980-11-26 1986-02-10 Escher Wyss Gmbh Papiermaschine mit zwei beweglichen wasserdurchlaessigen entwaesserungsbaendern, z.b. sieben
FI84734C (fi) 1988-05-23 1992-01-10 Valmet Paper Machinery Inc Dubbelviraformare foer pappersmaskin.
DE19950805A1 (de) * 1999-10-21 2001-04-26 Voith Paper Patent Gmbh Former
FI20075851L (fi) * 2007-11-28 2009-05-29 Metso Paper Inc Muodostusosa
FI120880B (fi) 2008-10-24 2010-04-15 Metso Paper Inc Muodostusosa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN108179651B (zh) 2019-09-17
CN108179651A (zh) 2018-06-19
EP3333315A1 (fr) 2018-06-13

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