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CA2300280A1 - Apparatus and method of generating stock turbulence in a fourdrinier forming section - Google Patents

Apparatus and method of generating stock turbulence in a fourdrinier forming section Download PDF

Info

Publication number
CA2300280A1
CA2300280A1 CA002300280A CA2300280A CA2300280A1 CA 2300280 A1 CA2300280 A1 CA 2300280A1 CA 002300280 A CA002300280 A CA 002300280A CA 2300280 A CA2300280 A CA 2300280A CA 2300280 A1 CA2300280 A1 CA 2300280A1
Authority
CA
Canada
Prior art keywords
elements
forming section
turbulence
lead
dewatering
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
CA002300280A
Other languages
French (fr)
Other versions
CA2300280C (en
Inventor
James D. White
Douglas R. Mcpherson
Richard E. Pitt
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.)
ASTENJOHNSON Inc
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
Priority claimed from US09/290,898 external-priority patent/US6126786A/en
Application filed by Individual filed Critical Individual
Publication of CA2300280A1 publication Critical patent/CA2300280A1/en
Application granted granted Critical
Publication of CA2300280C publication Critical patent/CA2300280C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars
    • 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
    • D21F1/18—Shaking apparatus for wire-cloths and associated parts
    • D21F1/20—Shaking apparatus for wire-cloths and associated parts in Fourdrinier machines

Landscapes

  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Looms (AREA)

Abstract

A method and apparatus generates turbulence to deflocculate relatively thick stock layers carried in an open surface forming section of a papermaking machine at operating speeds of up to 400m/min, for products having a basis weight of at least 160gsm. A dewatering box provides vacuum assisted drainage, having a set of dewatering elements, each set including a lead-in element, at least one intermediate element, and a trailing element. The path of the forming fabric is deflected downwardly as it passes over the intermediate elements, which are inclined at an angle between 0° and 10° from a plane defined by fabric supporting surfaces on the lead-in and riser elements. The resultant turbulence and agitation deflocculates the stock and reduces sheet sealing. The apparatus can be used in combination with other known formation and drainage devices, located either upstream or downstream, to augment their performance.
CA002300280A 1998-06-18 1999-06-17 Apparatus and method of generating stock turbulence in a fourdrinier forming section Expired - Fee Related CA2300280C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US9935698A 1998-06-18 1998-06-18
US09/099,356 1998-06-18
US09/290,898 US6126786A (en) 1998-06-18 1999-04-14 Apparatus and method of generating stock turbulence in a fourdrinier forming section
US09/290,898 1999-04-14
PCT/CA1999/000573 WO1999066121A1 (en) 1998-06-18 1999-06-17 Apparatus and method of generating stock turbulence in a fourdrinier forming section

Publications (2)

Publication Number Publication Date
CA2300280A1 true CA2300280A1 (en) 1999-12-23
CA2300280C CA2300280C (en) 2007-09-11

Family

ID=26796017

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002300280A Expired - Fee Related CA2300280C (en) 1998-06-18 1999-06-17 Apparatus and method of generating stock turbulence in a fourdrinier forming section

Country Status (12)

Country Link
EP (1) EP1005588B1 (en)
AT (1) ATE258249T1 (en)
AU (1) AU745683B2 (en)
BR (1) BR9906541B1 (en)
CA (1) CA2300280C (en)
DE (1) DE69914295T2 (en)
ES (1) ES2212563T3 (en)
NO (1) NO315570B1 (en)
NZ (1) NZ502363A (en)
PT (1) PT1005588E (en)
RU (1) RU2224062C2 (en)
WO (1) WO1999066121A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2436790A1 (en) 2000-10-16 2002-04-25 Roy Van Essen Adjustable activity drainage box
DE10107328A1 (en) 2001-02-16 2002-08-29 Voith Paper Patent Gmbh Method and device for removing white water
DE10162133A1 (en) * 2001-12-18 2003-07-03 Voith Paper Patent Gmbh Machine for making a fiber material width comprises a sheet formation zone passed over a vacuum box of zonal effective low pressure in the machine direction which can be increased without falling to zero
US8236139B1 (en) 2008-06-30 2012-08-07 International Paper Company Apparatus for improving basis weight uniformity with deckle wave control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922190A (en) * 1972-05-01 1975-11-25 Inotech Process Ltd Vacuum drainage device having a plurality of stepped blades
US4687549A (en) * 1986-01-08 1987-08-18 M/K Systems, Inc. Hydrofoil blade

Also Published As

Publication number Publication date
DE69914295D1 (en) 2004-02-26
NZ502363A (en) 2001-07-27
NO315570B1 (en) 2003-09-22
PT1005588E (en) 2004-05-31
ES2212563T3 (en) 2004-07-16
CA2300280C (en) 2007-09-11
WO1999066121A1 (en) 1999-12-23
BR9906541A (en) 2000-10-17
RU2224062C2 (en) 2004-02-20
NO20000778L (en) 2000-04-14
AU745683B2 (en) 2002-03-28
EP1005588A1 (en) 2000-06-07
EP1005588B1 (en) 2004-01-21
DE69914295T2 (en) 2004-07-01
BR9906541B1 (en) 2009-01-13
AU4354899A (en) 2000-01-05
NO20000778D0 (en) 2000-02-17
ATE258249T1 (en) 2004-02-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130618