EP1088934A3 - Pressing apparatus with membrane - Google Patents

Pressing apparatus with membrane Download PDF

Info

Publication number
EP1088934A3
EP1088934A3 EP00121132A EP00121132A EP1088934A3 EP 1088934 A3 EP1088934 A3 EP 1088934A3 EP 00121132 A EP00121132 A EP 00121132A EP 00121132 A EP00121132 A EP 00121132A EP 1088934 A3 EP1088934 A3 EP 1088934A3
Authority
EP
European Patent Office
Prior art keywords
continuous web
chamber
rollers
membrane
nips
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.)
Granted
Application number
EP00121132A
Other languages
German (de)
French (fr)
Other versions
EP1088934A2 (en
EP1088934B1 (en
Inventor
David Beck
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 Patent GmbH
Original Assignee
Voith Paper Patent 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
Priority claimed from US09/409,287 external-priority patent/US6416631B1/en
Priority claimed from US09/409,794 external-priority patent/US6645420B1/en
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1088934A2 publication Critical patent/EP1088934A2/en
Publication of EP1088934A3 publication Critical patent/EP1088934A3/en
Application granted granted Critical
Publication of EP1088934B1 publication Critical patent/EP1088934B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0254—Cluster presses, i.e. presses comprising a press chamber defined by at least three rollers
    • 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
    • D21F3/0254—Cluster presses, i.e. presses comprising a press chamber defined by at least three rollers
    • D21F3/0263—Sealing arrangements therefor
    • 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
    • D21F3/0272—Wet presses in combination with suction or blowing devices
    • 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
    • D21F3/029—Wet presses using special water-receiving belts

Abstract

An apparatus for processing a continuous web having a first side and a second side includes a plurality of rollers (60,62,64,66) are arranged for cooperative rotation. The plurality of rollers are positioned to define a corresponding plurality of nips (100,102,104,106). The continuous web is processed through at least two of the plurality of nips. At least a first roller of the plurality of rollers has at least one void formed in the cylindrical middle surface. First and second sealing panels (108,110) engage first and second circular ends of each of the plurality of rollers and define a chamber. A first pressure source (124) is fluidly coupled to the chamber to pressurize the chamber. A membrane (20) is positioned adjacent the first side of the continuous web to separate the continuous web from direct communication with the chamber. The membrane is structured and adapted to have a permeability which permits a predetermined fluid flow therethrough to the continuous web, and structured and adapted for communicating with the pressurized chamber and the at least one void to apply a mechanical pressing force to the continuous web.
EP00121132A 1999-09-30 2000-09-28 Pressing apparatus with membrane Expired - Lifetime EP1088934B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/409,287 US6416631B1 (en) 1998-10-29 1999-09-30 Pressing apparatus having semipermeable membrane
US409794 1999-09-30
US409287 1999-09-30
US09/409,794 US6645420B1 (en) 1999-09-30 1999-09-30 Method of forming a semipermeable membrane with intercommunicating pores for a pressing apparatus

Publications (3)

Publication Number Publication Date
EP1088934A2 EP1088934A2 (en) 2001-04-04
EP1088934A3 true EP1088934A3 (en) 2003-03-12
EP1088934B1 EP1088934B1 (en) 2006-08-09

Family

ID=27020584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121132A Expired - Lifetime EP1088934B1 (en) 1999-09-30 2000-09-28 Pressing apparatus with membrane

Country Status (3)

Country Link
EP (1) EP1088934B1 (en)
AT (1) ATE335878T1 (en)
DE (1) DE60029892T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6702924B2 (en) 2001-09-27 2004-03-09 Voith Paper Patent Gmbh Main roll for an air press of a papermaking machine
US6875310B2 (en) 2003-03-26 2005-04-05 Voith Paper Patent Gmbh Roll configuration for an air press of a papermaking machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974026A (en) * 1973-03-01 1976-08-10 Escher Wyss G.M.B.H. Belt press with rotatable cylinder and adjustable pressure member
US4173249A (en) * 1977-07-08 1979-11-06 Oy Tampella Ab Extended nip press for a paper machine
US4675079A (en) * 1982-12-14 1987-06-23 Webster David R Multi-nip suction press with a four roller closed train
US5700356A (en) * 1996-01-19 1997-12-23 Lefkowitz; Leonard R. Air permeable belt for dewatering web in press nip

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974026A (en) * 1973-03-01 1976-08-10 Escher Wyss G.M.B.H. Belt press with rotatable cylinder and adjustable pressure member
US4173249A (en) * 1977-07-08 1979-11-06 Oy Tampella Ab Extended nip press for a paper machine
US4675079A (en) * 1982-12-14 1987-06-23 Webster David R Multi-nip suction press with a four roller closed train
US5700356A (en) * 1996-01-19 1997-12-23 Lefkowitz; Leonard R. Air permeable belt for dewatering web in press nip

Also Published As

Publication number Publication date
DE60029892D1 (en) 2006-09-21
DE60029892T2 (en) 2007-02-15
EP1088934A2 (en) 2001-04-04
EP1088934B1 (en) 2006-08-09
ATE335878T1 (en) 2006-09-15

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