DE602005027403D1 - DEVICE AND METHOD FOR REGULATING THE CONSISTENCY OF A SUBSTANCE FOR SUSPENSION IN A PAPER MACHINE - Google Patents

DEVICE AND METHOD FOR REGULATING THE CONSISTENCY OF A SUBSTANCE FOR SUSPENSION IN A PAPER MACHINE

Info

Publication number
DE602005027403D1
DE602005027403D1 DE602005027403T DE602005027403T DE602005027403D1 DE 602005027403 D1 DE602005027403 D1 DE 602005027403D1 DE 602005027403 T DE602005027403 T DE 602005027403T DE 602005027403 T DE602005027403 T DE 602005027403T DE 602005027403 D1 DE602005027403 D1 DE 602005027403D1
Authority
DE
Germany
Prior art keywords
flow
stock solution
channel
consistency
primary channel
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
DE602005027403T
Other languages
German (de)
Inventor
Fabrizio Tornello
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.)
PMT Italia SpA
Original Assignee
PMT Italia SpA
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 PMT Italia SpA filed Critical PMT Italia SpA
Publication of DE602005027403D1 publication Critical patent/DE602005027403D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/009—Fibre-rearranging devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/026—Details of the turbulence section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0027—Paper-making control systems controlling the forming section

Abstract

An apparatus is disclosed for controlling the consistency of a flow of stock solution flowing from a header to a slice lip of a headbox of a papermaking machine so that the cross machine direction consistency profile of a resultant web is controlled. The apparatus includes a flow channel which is disposed within the headbox between the header and the slice lip. The flow channel has an upstream and a downstream end such that the flow of the stock solution is in a flow direction from the upstream end towards the downstream end of the flow channel. The flow channel includes a primary channel having a first and a second extremity such that the flow of the stock solution is through the primary channel from the first extremity to the second extremity of the primary channel. A supply channel has a first and a second end and is disposed downstream relative to the primary channel for the flow therethrough of a supply portion of the flow of the stock solution. The second end of the supply channel is connected to the slice lip so that the supply portion of the flow of the stock solution flows to the slice lip. A recirculation channel has a first and a second termination, the recirculation channel being disposed downstream relative to the primary channel for the flow therethrough of a recirculation portion of the flow of the stock solution. The second termination of the recirculation channel is connected to the header so that the recirculation portion of the flow of the stock solution flows to the header. A generator is disposed adjacent to the primary channel for generating ultrasonic waves within the flow of the stock solution flowing through the primary channel. The ultrasonic waves move fiber particles suspended within the stock solution for controlling the consistency of the stock solution flowing through the primary channel. Also, an ultrasound absorber is disposed adjacent to the primary channel such that the flow of the stock solution flows in the flow direction within a region disposed between the generator and the absorber so that in operation of the apparatus, when the stock solution is flowing within the region, the fiber particles suspended within the stock solution are deviated from the flow direction. The arrangement is such that the consistency of the stock solution flowing from the primary channel through the supply channel is different from the consistency of the stock solution flowing from the primary channel through the recirculation channel so that the consistency of the supply portion of the stock solution flowing through the slice lip is controlled thereby controlling the cross machine direction consistency profile of the resultant web.
DE602005027403T 2005-02-03 2005-02-03 DEVICE AND METHOD FOR REGULATING THE CONSISTENCY OF A SUBSTANCE FOR SUSPENSION IN A PAPER MACHINE Active DE602005027403D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2005/000049 WO2006082600A1 (en) 2005-02-03 2005-02-03 Apparatus and method for controlling the consistency of a flow of stock solution in a papermaking machine

Publications (1)

Publication Number Publication Date
DE602005027403D1 true DE602005027403D1 (en) 2011-05-19

Family

ID=34960444

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005027403T Active DE602005027403D1 (en) 2005-02-03 2005-02-03 DEVICE AND METHOD FOR REGULATING THE CONSISTENCY OF A SUBSTANCE FOR SUSPENSION IN A PAPER MACHINE

Country Status (13)

Country Link
US (1) US20080135198A1 (en)
EP (1) EP1844192B1 (en)
CN (1) CN101087917B (en)
AT (1) ATE504693T1 (en)
AU (1) AU2005326567B2 (en)
BR (1) BRPI0519932A2 (en)
CA (1) CA2581228C (en)
CZ (1) CZ2007514A3 (en)
DE (1) DE602005027403D1 (en)
ES (1) ES2364485T3 (en)
HU (1) HUP0700557A2 (en)
PL (1) PL1844192T3 (en)
WO (1) WO2006082600A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154914B (en) * 2011-02-24 2013-03-20 钟洲 Method for preparing aramid paper and aramid paper prepared by method
CN114457609B (en) * 2022-01-18 2024-02-27 中国科学院山西煤炭化学研究所 Head box for special fiber and fiber dispersing method using head box

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4234940C2 (en) * 1992-10-16 1994-04-07 Voith Gmbh J M Headbox with basis weight cross profile control by local concentration change
US5803270A (en) * 1995-10-31 1998-09-08 Institute Of Paper Science & Technology, Inc. Methods and apparatus for acoustic fiber fractionation
DE19634996C2 (en) * 1996-08-30 2000-05-25 Voith Sulzer Papiermasch Gmbh Material density-controlled headbox with pulp consistency control
DE19634993A1 (en) * 1996-08-30 1998-03-05 Voith Sulzer Papiermasch Gmbh Method and device for adjusting the stock density and fiber orientation profile in a headbox
FI113284B (en) * 1998-02-13 2004-03-31 Metso Paper Inc Inlet box for a paper machine / board machine with which the surface weight of the web can be adjusted
EP1556544A2 (en) * 2002-11-01 2005-07-27 International Paper Company Method of making a stratified paper

Also Published As

Publication number Publication date
WO2006082600A1 (en) 2006-08-10
HUP0700557A2 (en) 2008-02-28
PL1844192T3 (en) 2011-09-30
BRPI0519932A2 (en) 2009-04-07
EP1844192A1 (en) 2007-10-17
ATE504693T1 (en) 2011-04-15
CA2581228A1 (en) 2006-08-10
EP1844192B1 (en) 2011-04-06
CN101087917A (en) 2007-12-12
CN101087917B (en) 2011-12-14
CA2581228C (en) 2010-04-27
AU2005326567A1 (en) 2006-08-10
AU2005326567B2 (en) 2010-12-09
CZ2007514A3 (en) 2008-02-27
US20080135198A1 (en) 2008-06-12
ES2364485T3 (en) 2011-09-05

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