EP0675224B1 - Presse pour matériau en bande - Google Patents

Presse pour matériau en bande Download PDF

Info

Publication number
EP0675224B1
EP0675224B1 EP95103731A EP95103731A EP0675224B1 EP 0675224 B1 EP0675224 B1 EP 0675224B1 EP 95103731 A EP95103731 A EP 95103731A EP 95103731 A EP95103731 A EP 95103731A EP 0675224 B1 EP0675224 B1 EP 0675224B1
Authority
EP
European Patent Office
Prior art keywords
pressure
roller
loading
pressing device
circumferential direction
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
EP95103731A
Other languages
German (de)
English (en)
Other versions
EP0675224A1 (fr
Inventor
Rolf Dr. Van Haag
Hans-Rolf Conrad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Sulzer Finishing GmbH
Original Assignee
Voith Sulzer Finishing GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Sulzer Finishing GmbH filed Critical Voith Sulzer Finishing GmbH
Publication of EP0675224A1 publication Critical patent/EP0675224A1/fr
Application granted granted Critical
Publication of EP0675224B1 publication Critical patent/EP0675224B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • 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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses

Definitions

  • the invention relates to a pressing device for web-shaped material for influencing parameters such as thickness, gloss or smoothness, in particular for smoothing a paper web, with a press nip which is formed between a preferably heatable roller and a pressure shoe covered by a circumferential belt, wherein the pressure shoe has a concave pressure surface adapted to the curvature of the roller surface and can be pressed against the roller by means of a loading device.
  • Such a pressing device is known from DE 39 20 204 C2.
  • the pressure shoe is formed by a centrally acting loading device, which is designed as a pressure transmitter in the form of a piston-cylinder unit, to which pressure medium can be supplied via a line.
  • the press nip has a substantially greater length in the web running direction than when two rollers interact. This increases the length of time the web stays in the press nip. This is particularly advantageous when smoothing a paper web.
  • the number of possibilities for influencing the sheet material is small.
  • only the loading force and thus the compressive stress in the press nip can be varied.
  • the loading device has at least two loading elements offset in the circumferential direction of the roller, the loading forces of which can each be adjusted individually, and that the radius of curvature of the concave Print area in the unloaded state is slightly larger than the roller radius.
  • the invention has for its object to provide a pressing device of the type described above, in which there are additional options for influencing and therefore an even better adaptation to the desired properties of the web to be treated is possible.
  • the loading device has at least two loading elements offset in the circumferential direction of the roller, the loading forces of which are each individually adjustable, and that the radius of curvature of the concave pressure surface is somewhat larger than the sum of at least over part of this pressure surface in the unloaded state Roll radius, web thickness and strip thickness and depending on the load forces can be reduced.
  • the load forces are set to the same value, the conditions are similar to those previously used. However, if the load forces are set differently, the compressive stress changes over the width of the press nip. In particular you can despite the same line load, the maximum value of which is determined by the design of the roller, generate different compressive stresses. Either all loading elements can work with a relatively low loading force due to the width of the press nip, or one loading element is operated with a large loading force, all other loading elements, however, with a reduced loading force. The compressive stress can be varied continuously between these two extreme positions while the line load remains the same. This means that it is in your hand to specifically influence certain parameters of the sheet material, for example the thickness, gloss or smoothness of the paper.
  • the width of the press nip increases with increasing load forces because the pressure surface adapts more and more to the roll surface. You can therefore influence both the compressive stress profile and the gap width, i.e. the duration of action. If the larger radius of curvature is not provided over the entire pressure area, but for example only over the second half of the pressure area, the compressive stress can be varied with the loading force in the first half and the press nip width with the loading force in the second half.
  • the load elements are advantageously pressure transmitters designed as piston-cylinder units, the pressure chambers of which pressure medium can be supplied at different pressures.
  • Such load elements can be controlled particularly easily with the help of pressure regulating valves and adapted to the circumstances.
  • the pressure surface has at least two pockets offset in the circumferential direction of the roller and covered by the band, each of which is connected to the pressure chamber of different pressure transmitters via a throttle channel.
  • the masking tape is largely guided without friction over the pressure surface and is largely loaded by the pressure medium.
  • the pressing device illustrated in FIG. 1 has a roller 1 which has a drive 2 and can be heated by means of an induction heater 3.
  • a pressure shoe 5 is supported on a carrier 4.
  • a plurality of pressure shoes arranged one behind the other in the longitudinal direction of the roll can also be provided.
  • the pressure shoe has a concave pressure surface 6, which is covered by an elastic endless belt 7, the speed of which is preferably equal to the peripheral speed of the roller 1 or the web speed.
  • the arrows P1, P2 and P3 indicate the direction of movement of the roller surface, the masking tape 7 and the web 10, respectively.
  • the pressure shoe 5 is provided with two load elements 11 and 12 arranged symmetrically to the central plane, each of which is provided as a pressure transmitter with a piston 13, cylinder 14, pressure chamber 15 and pressure medium supply line 16.
  • Two pockets 17 and 18 offset in the circumferential direction of the roller are provided in the printing surface 6, which are each connected via a throttle channel 19 to the pressure chamber 15 of the associated load element.
  • the pockets 17 and 18 are covered by the elastic band 7, so that there is a hydrostatic bearing of the band.
  • the radius of curvature of the printing surface 6 is equal to the sum of the radius of the roller 1, the thickness of the paper web 10 and the thickness of the belt 7. If the loading elements 11 and 12 are subjected to the same pressure, the result is approximately the same across the entire width of the printing surface 6 same compressive stress. However, if a higher pressure is applied to the load element 11 than the load element 12, a stepped pressure stress profile results in the press nip 9.
  • the pressures to be supplied to the load elements 11 and 12 can be freely selected. The only limitation is that the maximum permissible line load of the roller is not exceeded.
  • the same reference numerals as in FIG. 1 are used for the same parts, and reference numerals increased by 100 for modified parts.
  • the pressure surface 106 in the first half a has a radius which is equal to the sum of the roll radius, the thickness of the web 10 and the thickness of the strip 7, while in the second half b the radius is somewhat larger .
  • the effective width of the press nip 109 is limited to the first half a in the unloaded state.
  • the loading force exerted by the loading element 11 is converted into a corresponding compressive stress in the first half a.
  • the second half b of the pressure surface 106 gradually deforms, so that the effective press gap 109 increases increasingly.
  • forces in the Press gap so that not only the width of this gap, but also the compressive stress profile changes.
  • the height of the compressive stress can be influenced with the first loading element 11 and the width of the press nip 109 with the second loading element 12.
  • more than two load elements can be arranged one behind the other in the circumferential direction.
  • the loading elements can also be arranged one behind the other in the direction of the roller axis in order to additionally provide deflection compensation.
  • the roller 1 is also the possibility of designing the roller 1 as a deflection compensation roller, in which a roller shell is supported on a non-rotatably supported support by means of supporting elements.

Landscapes

  • Paper (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (4)

  1. Presse pour matériau en bande afin d'influer sur des paramètres, tels que l'épaisseur, le brillant ou le lissé, notamment afin de lisser une bande de papier, avec une fente de presse (109) qui est formée entre un rouleau (1) pouvant de préférence être chauffé et un patin presseur recouvert d'un ruban (7) rotatif, le patin presseur ayant une surface de pression (106) concave adaptée à la courbure de la surface du rouleau et pouvant être appuyé contre le rouleau au moyen d'un dispositif de charge, caractérisée en ce que le dispositif de charge comporte au moins deux éléments de charge (11, 12), qui sont décalés dans la direction circonférentielle du rouleau et dont les intensités de charge sont réglables séparément les unes des autres, et le rayon de courbure de la surface de pression (106) concave est, au moins sur une partie de cette surface de pression et à l'état non chargé, un peu plus grand que la somme du rayon du rouleau, de l'épaisseur de la bande et de l'épaisseur du ruban et peut être diminué en fonction des intensités de charge.
  2. Presse selon la revendication 1, caractérisée en ce que les éléments de charge (11, 12) sont des dispositifs exerçant une pression qui sont conçus comme des unités pistons-cylindres et dont les espaces de compression (15) peuvent être alimentés avec des produits de compression sous différentes pressions.
  3. Presse selon la revendication 2, caractérisée en ce que la surface de pression (106) comporte au moins deux poches (17, 18) qui sont décalées dans la direction circonférentielle du rouleau (1), qui sont recouvertes par le ruban (7) et qui sont reliées chacune par l'intermédiaire d'un canal d'étranglement (19) à l'espace de compression (13) de différents dispositifs exerçant une pression.
  4. Presse selon l'une des revendications 1 à 3, caractérisée en ce que deux éléments de charge (11, 12) sont prévus décalés dans la direction circonférentielle et sont disposés symétriquement par rapport au plan médian du patin presseur (5).
EP95103731A 1994-03-24 1995-03-15 Presse pour matériau en bande Expired - Lifetime EP0675224B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4410129 1994-03-24
DE4410129A DE4410129A1 (de) 1994-03-24 1994-03-24 Preßvorrichtung für bahnförmiges Material

Publications (2)

Publication Number Publication Date
EP0675224A1 EP0675224A1 (fr) 1995-10-04
EP0675224B1 true EP0675224B1 (fr) 1997-06-18

Family

ID=6513675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103731A Expired - Lifetime EP0675224B1 (fr) 1994-03-24 1995-03-15 Presse pour matériau en bande

Country Status (7)

Country Link
US (1) US5582689A (fr)
EP (1) EP0675224B1 (fr)
JP (1) JPH083888A (fr)
AT (1) ATE154651T1 (fr)
CA (1) CA2144252A1 (fr)
DE (2) DE4410129A1 (fr)
FI (1) FI951299L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227979C5 (de) * 2002-06-22 2013-07-25 Voith Patent Gmbh Breitnipvorrichtung und Verfahren zum Satinieren einer Materialbahn

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705360A1 (de) * 1997-02-12 1998-08-13 Voith Sulzer Papiermasch Gmbh Preßvorrichtung zum Entwässern oder Glätten einer Faserstoffbahn
US6036909A (en) * 1997-11-25 2000-03-14 Kimberly-Clark Worldwide, Inc. Method for embossing web material using an extended nip
FI111860B (fi) * 1998-03-04 2003-09-30 Metso Paper Inc Pitkänippipuristintela ja sitä soveltava paperikoneen puristinosa
FI104745B (fi) * 1998-06-25 2000-03-31 Valmet Corp Menetelmä ja sovitelma paperin ja kartongin kalanteroimiseksi
US6248210B1 (en) 1998-11-13 2001-06-19 Fort James Corporation Method for maximizing water removal in a press nip
SE9804346D0 (sv) 1998-12-16 1998-12-16 Valmet Corp Method and apparatus for calendering paper
SE9804347D0 (sv) * 1998-12-16 1998-12-16 Valmet Corp Method and apparatus for calendering paper
FI108801B (fi) * 2000-08-24 2002-03-28 Metso Paper Inc Menetelmä yhden tai useamman kuituradan pinnan laatusuureen säätämiseksi kenkäkalanterissa
JP4534109B2 (ja) * 2001-03-16 2010-09-01 株式会社Ihi シューニップカレンダ
DE102004004363A1 (de) * 2004-01-29 2005-08-25 Voith Paper Patent Gmbh Breitnip-Kalander
KR101146215B1 (ko) 2004-02-04 2012-05-11 엘디알 메디칼 추간 연골 인공 기관
FR2891135B1 (fr) 2005-09-23 2008-09-12 Ldr Medical Sarl Prothese de disque intervertebral
WO2007149593A2 (fr) 2006-06-22 2007-12-27 Ams Research Corporation Ensembles de fronde d'incontinence à tension réglable
US20080262535A1 (en) * 2007-04-06 2008-10-23 Ohk Medical Devices Ltd. Method and an apparatus for adjusting Blood circulation in a limb
US9131944B2 (en) * 2008-01-29 2015-09-15 Ohk Medical Devices Ltd. Mobile torus devices
US8366739B2 (en) * 2008-01-30 2013-02-05 Ohk Medical Devices Ltd. Motion control devices
US20090209891A1 (en) * 2008-02-14 2009-08-20 Ohk Medical Devices Ltd. Pressure controlling devices
JP5444775B2 (ja) * 2009-03-17 2014-03-19 富士ゼロックス株式会社 カール矯正装置及び画像形成装置
US20100297281A1 (en) * 2009-05-21 2010-11-25 Mcneil Kevin Benson Extended nip embossing apparatus
US20100294450A1 (en) * 2009-05-21 2010-11-25 Mcneil Kevin Benson Extended nip embossing apparatus
US20100294449A1 (en) * 2009-05-21 2010-11-25 Mcneil Kevin Benson Apparatus suitable for extended nip embossing
DE202016106942U1 (de) 2016-02-11 2017-01-02 Voith Patent Gmbh Vorrichtung zur Behandlung einer Faserstoffbahn
CN114684658B (zh) * 2022-04-15 2023-08-01 宿迁弘亚无纺布有限公司 一种带有调节结构的无纺布加工用压平设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD218918A1 (de) * 1982-12-14 1985-02-20 Freiberg Papier Maschwerke Vorrichtung zum anpressen eines umlaufenden bandes
DE3705241A1 (de) * 1986-12-24 1988-07-07 Escher Wyss Gmbh Verfahren zur mechanisch-thermischen entwaesserung einer faserstoffbahn
SE461154B (sv) * 1988-05-25 1990-01-15 Valmet Paper Machinery Inc Press med laangt nyp foer pappers- eller kartongmaskiner
SE461171C (sv) * 1988-05-25 1992-08-17 Valmet Paper Machinery Inc Press med laangt nyp foer pappers- eller kartongmaskiner
DE3920204A1 (de) * 1988-10-31 1990-05-10 Escher Wyss Gmbh Verfahren zum glaetten einer papier- oder kartonbahn
FI82092C (fi) * 1989-03-22 1991-01-10 Valmet Paper Machinery Inc Laongnyppress.
FI91789C (fi) * 1989-12-21 1994-08-10 Tampella Oy Ab Paperikoneen pitkävyöhykepuristin
US5167768A (en) * 1991-11-07 1992-12-01 Beloit Corporation Wide nip web press and method using a press shoe with two pivots
SE470235B (sv) * 1992-05-12 1993-12-13 Valmet Karlstad Ab Press av skotyp
DE4216264C2 (de) * 1992-05-16 2000-05-25 Voith Sulzer Papiermasch Gmbh Verfahren zum Trocknen und Auflockern einer Papierbahn
US5441604A (en) * 1994-02-17 1995-08-15 Beloit Technologies, Inc. Extended nip press apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227979C5 (de) * 2002-06-22 2013-07-25 Voith Patent Gmbh Breitnipvorrichtung und Verfahren zum Satinieren einer Materialbahn

Also Published As

Publication number Publication date
DE59500323D1 (de) 1997-07-24
JPH083888A (ja) 1996-01-09
FI951299A7 (fi) 1995-09-25
CA2144252A1 (fr) 1995-09-25
ATE154651T1 (de) 1997-07-15
FI951299L (fi) 1995-09-25
US5582689A (en) 1996-12-10
FI951299A0 (fi) 1995-03-20
DE4410129A1 (de) 1995-09-28
EP0675224A1 (fr) 1995-10-04

Similar Documents

Publication Publication Date Title
EP0675224A1 (fr) Presse pour matériau en bande
DE3131799C2 (de) Walzenpresse für Papier- und ähnliche Bahnen, insbesondere Kalander
EP0732446B1 (fr) Calandre pour le traitement d'une bande de papier sur deux faces
DE69803049T2 (de) Verfahren zum kalandrieren und ein kalander zur durchführung des verfahrens
DE69802672T2 (de) Verfahren zum kalandrieren und kalander zur anwendung des verfahrens
DE3503819A1 (de) Hydraulischer pressschuh sowie dessen verwendung und betrieb
DE3317455A1 (de) Presseinrichtung, insbesondere zum entwaessern einer papierbahn
EP0735185B1 (fr) Calandre pour le traitement des deux surfaces d'une bande de papier
DE3201635C2 (de) Kalanderanordnung
EP0732445B1 (fr) Calandre pour le traitement d'une bande de papier
EP0839953B1 (fr) Patin de pressage
DE4401580A1 (de) Langspaltpresse zum Auspressen einer laufenden Bahn, insbesondere einer Papierbahn
DE4343173A1 (de) Kalander und nachgeschaltete Wickelvorrichtung
EP0745724B1 (fr) Presse à rouleaux
EP0242660B1 (fr) Rouleau à déformation règlable
DE69704763T2 (de) Breit-nip-presse mit einem hydraulischem druckausgleichsventil
EP0928843B1 (fr) Dispositif de pressage
DE19508352B4 (de) Kalander für die Behandlung einer Papierbahn
EP0732444B1 (fr) Calandre pour le traitement d'une bande de papier et méthode d'utilisation
DE60122590T2 (de) Verfahren zum Regeln einer oder mehrerer Oberflächenqualitätsvariablen bei einem Faserflachmaterial in einem Schuhkalander
EP0799933B1 (fr) Calandre pour papier ou similaire
DE4017433A1 (de) Walzenpresse
DE2738781A1 (de) Walzenpresse, insbesondere fuer die papierfabrikation
EP1505202B1 (fr) Dispositif de traitement d'une bande
DE2836228C2 (de) Stützelement

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19950831

17Q First examination report despatched

Effective date: 19960718

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 154651

Country of ref document: AT

Date of ref document: 19970715

Kind code of ref document: T

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: LUCHS & PARTNER PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970619

REF Corresponds to:

Ref document number: 59500323

Country of ref document: DE

Date of ref document: 19970724

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

Ref country code: AT

Payment date: 19980220

Year of fee payment: 4

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

Ref country code: FR

Payment date: 19980319

Year of fee payment: 4

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

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

Ref country code: DE

Payment date: 19980430

Year of fee payment: 4

26N No opposition filed
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: 19990315

Ref country code: AT

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

Effective date: 19990315

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

Ref country code: LI

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

Effective date: 19990331

Ref country code: CH

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

Effective date: 19990331

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

Ref country code: NL

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

Effective date: 19991001

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

Effective date: 19990315

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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 NON-PAYMENT OF DUE FEES

Effective date: 19991130

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19991001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: 20000101

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: 20050315