FI20075472L - A method for evaluating the condition/state of a paper machine or similar press felt - Google Patents

A method for evaluating the condition/state of a paper machine or similar press felt Download PDF

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Publication number
FI20075472L
FI20075472L FI20075472A FI20075472A FI20075472L FI 20075472 L FI20075472 L FI 20075472L FI 20075472 A FI20075472 A FI 20075472A FI 20075472 A FI20075472 A FI 20075472A FI 20075472 L FI20075472 L FI 20075472L
Authority
FI
Finland
Prior art keywords
condition
evaluating
felt
state
paper machine
Prior art date
Application number
FI20075472A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20075472A0 (en
Inventor
Kari Kokkonen
Original Assignee
Metso Paper Inc
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 Metso Paper Inc filed Critical Metso Paper Inc
Priority to FI20075472A priority Critical patent/FI20075472L/en
Publication of FI20075472A0 publication Critical patent/FI20075472A0/en
Priority to PCT/FI2008/050367 priority patent/WO2008155461A1/en
Publication of FI20075472L publication Critical patent/FI20075472L/en

Links

Classifications

    • 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
    • D21G9/0036—Paper-making control systems controlling the press or drying 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
    • D21F1/32—Washing wire-cloths or felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082—Investigating permeability by forcing a fluid through a sample
    • G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Paper (AREA)

Abstract

The invention relates to a method in monitoring the condition of felt (H) in a pa¬ per machine, a board machine or equivalent. In the method according to the invention, based on air volume (Q) of a UhIe box (11), an area (A) and vacuum (?p) of the UhIe box, an air permeability index (K) of the felt (H) is calculated. It is the air volume (Q) having permeated the felt (H) via a suction surface of the UhIe box over the area (A) of the UhIe box and vacuum (?p) being across the felt.
FI20075472A 2007-06-20 2007-06-20 A method for evaluating the condition/state of a paper machine or similar press felt FI20075472L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20075472A FI20075472L (en) 2007-06-20 2007-06-20 A method for evaluating the condition/state of a paper machine or similar press felt
PCT/FI2008/050367 WO2008155461A1 (en) 2007-06-20 2008-06-17 Method in evaluating the condition / state of press felt of paper machine or equivalent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075472A FI20075472L (en) 2007-06-20 2007-06-20 A method for evaluating the condition/state of a paper machine or similar press felt

Publications (2)

Publication Number Publication Date
FI20075472A0 FI20075472A0 (en) 2007-06-20
FI20075472L true FI20075472L (en) 2008-12-21

Family

ID=38212443

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20075472A FI20075472L (en) 2007-06-20 2007-06-20 A method for evaluating the condition/state of a paper machine or similar press felt

Country Status (2)

Country Link
FI (1) FI20075472L (en)
WO (1) WO2008155461A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1401944B1 (en) * 2010-09-17 2013-08-28 Giuseppe Cristini S P A Sa PORTABLE CONTROL DEVICE FOR THE CONDITIONS OF A CIRCULATING BELT IN A PAPER MANUFACTURING MACHINE
US9540769B2 (en) 2013-03-11 2017-01-10 International Paper Company Method and apparatus for measuring and removing rotational variability from a nip pressure profile of a covered roll of a nip press
US20150218755A1 (en) * 2014-02-04 2015-08-06 Lucjan Edmund Raubic Method and apparatus for improving efficiency of Uhle Boxes in the process of paper production by applying a homogeneous mixture of superheated humid air
US10378980B2 (en) 2014-05-02 2019-08-13 International Paper Company Method and system associated with a sensing roll and a mating roll for collecting roll data
US9797788B2 (en) 2014-05-02 2017-10-24 International Paper Company Method and system associated with a sensing roll including pluralities of sensors and a mating roll for collecting roll data
US9804044B2 (en) 2014-05-02 2017-10-31 International Paper Company Method and system associated with a sensing roll and a mating roll for collecting data including first and second sensor arrays
US9696226B2 (en) * 2015-06-10 2017-07-04 International Paper Company Count-based monitoring machine wires and felts
US9816232B2 (en) 2015-06-10 2017-11-14 International Paper Company Monitoring upstream machine wires and felts
US9677225B2 (en) 2015-06-10 2017-06-13 International Paper Company Monitoring applicator rods
US9863827B2 (en) * 2015-06-10 2018-01-09 International Paper Company Monitoring machine wires and felts
US10370795B2 (en) 2015-06-10 2019-08-06 International Paper Company Monitoring applicator rods and applicator rod nips
US9534970B1 (en) 2015-06-10 2017-01-03 International Paper Company Monitoring oscillating components

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056281A (en) * 1959-01-28 1962-10-02 Thomas C Smyth Porosity testing of papermaker's felt
US3762211A (en) * 1972-01-28 1973-10-02 O Poulsen Method and apparatus for continuously measuring the porosity of a moving wet porous continuous sheet
US3808876A (en) * 1972-10-02 1974-05-07 T Kershaw Air permeability tester
US4329201A (en) * 1979-12-06 1982-05-11 Albany International Corp. Constant vacuum felt dewatering system
US4401147A (en) * 1981-09-28 1983-08-30 Appleton Mills Portable instrument for measuring the permeability of a papermaker's felt
FI97914C (en) * 1995-10-23 1997-03-10 Valmet Corp Method and apparatus for measuring the air permeability of a drying wire
US5862575A (en) * 1997-09-03 1999-01-26 Valmet, Inc. On-line hydroenhancement evaluation technique
FR2773882B1 (en) * 1998-01-22 2000-03-10 Tabacs & Allumettes Ind PERMEAMETER WITH WIDE MEASURING RANGE

Also Published As

Publication number Publication date
FI20075472A0 (en) 2007-06-20
WO2008155461A1 (en) 2008-12-24

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Legal Events

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