CA2370354A1 - Method for cross-direction profiling of a paper or board web in a nip - Google Patents

Method for cross-direction profiling of a paper or board web in a nip Download PDF

Info

Publication number
CA2370354A1
CA2370354A1 CA002370354A CA2370354A CA2370354A1 CA 2370354 A1 CA2370354 A1 CA 2370354A1 CA 002370354 A CA002370354 A CA 002370354A CA 2370354 A CA2370354 A CA 2370354A CA 2370354 A1 CA2370354 A1 CA 2370354A1
Authority
CA
Canada
Prior art keywords
nip
paper
pressure medium
feed points
roll
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
CA002370354A
Other languages
French (fr)
Other versions
CA2370354C (en
Inventor
Timo Torvi
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
Individual
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 Individual filed Critical Individual
Publication of CA2370354A1 publication Critical patent/CA2370354A1/en
Application granted granted Critical
Publication of CA2370354C publication Critical patent/CA2370354C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure

Landscapes

  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

A nip is formed between a backing roll (10) and a loading roll (20). The loading roll (20) is comprised of a stationary support structure (21) and, adapted to run about the same, a flexible mantle (22) supported by its inner surface (22a) on said support structure (21) by means of at least one supporting member (23) serving to press said flexible mantle (22) against said backing roll (10).
The loading roll (20) includes further at least one essentially axially aligned row of discrete pressure medium feed points (25, 26), whereby a pressure and/or flow rate controlled flow of pressure medium can be fed through the feed points (25, 26) of said at least one row against said inner surface (22a) of said mantle (22). According to the method, the pressure medium fed through said feed points (26) is used cross-machine direction (CD) profiling of the paper or board web passing through the nip (N).
CA002370354A 1999-04-15 2000-04-14 Method for cross-direction profiling of a paper or board web in a nip Expired - Fee Related CA2370354C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI990839A FI112511B (en) 1999-04-15 1999-04-15 Method for transversely profiling a paper or board web in a nip
FI990839 1999-04-15
PCT/FI2000/000319 WO2000063491A2 (en) 1999-04-15 2000-04-14 Method for cross-direction profiling of a paper or board web in a nip

Publications (2)

Publication Number Publication Date
CA2370354A1 true CA2370354A1 (en) 2000-10-26
CA2370354C CA2370354C (en) 2008-02-19

Family

ID=8554432

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002370354A Expired - Fee Related CA2370354C (en) 1999-04-15 2000-04-14 Method for cross-direction profiling of a paper or board web in a nip

Country Status (7)

Country Link
EP (1) EP1226305B1 (en)
AT (1) ATE262075T1 (en)
AU (1) AU3969400A (en)
CA (1) CA2370354C (en)
DE (1) DE60009119T2 (en)
FI (1) FI112511B (en)
WO (1) WO2000063491A2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544978C2 (en) * 1995-12-01 1998-07-30 Voith Sulzer Papiermasch Gmbh Press roll

Also Published As

Publication number Publication date
DE60009119T2 (en) 2005-04-28
CA2370354C (en) 2008-02-19
FI990839A (en) 2000-10-16
WO2000063491A3 (en) 2001-04-05
WO2000063491A2 (en) 2000-10-26
FI990839A0 (en) 1999-04-15
FI112511B (en) 2003-12-15
DE60009119D1 (en) 2004-04-22
AU3969400A (en) 2000-11-02
EP1226305A2 (en) 2002-07-31
ATE262075T1 (en) 2004-04-15
EP1226305B1 (en) 2004-03-17

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130415