NO20000778L - Apparatus and method for generating turbulence in a blank in a section forming a fourdrinier - Google Patents

Apparatus and method for generating turbulence in a blank in a section forming a fourdrinier

Info

Publication number
NO20000778L
NO20000778L NO20000778A NO20000778A NO20000778L NO 20000778 L NO20000778 L NO 20000778L NO 20000778 A NO20000778 A NO 20000778A NO 20000778 A NO20000778 A NO 20000778A NO 20000778 L NO20000778 L NO 20000778L
Authority
NO
Norway
Prior art keywords
stock
elements
turbulence
deflocculate
lead
Prior art date
Application number
NO20000778A
Other languages
Norwegian (no)
Other versions
NO315570B1 (en
NO20000778D0 (en
Inventor
James D White
Douglas R Mcpherson
Richard E Pitt
Original Assignee
Jwi Ltd
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 Jwi Ltd filed Critical Jwi Ltd
Publication of NO20000778D0 publication Critical patent/NO20000778D0/en
Publication of NO20000778L publication Critical patent/NO20000778L/en
Publication of NO315570B1 publication Critical patent/NO315570B1/en

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

Abstract

A method and apparatus for generating turbulence in stock to deflocculate the stock in an open surface forming section of a paper making machine comprises a dewatering box (2) providing vacuum assisted drainage and which has a set of dewatering elements that impart turbulence into relatively thick stock layers carried at machine operating speeds of equal up to about 400 m/min, for the production of paper products having a basis weight generally in excess of about 160 gsm. Each set of elements includes a lead-in element (5), at least one intermediate element (6, 7), and a trailing element (8). The path of the forming fabric (13) is deflected downwardly as it passes over the intermediate elements, which are inclined at an angle of from about 0 DEG to about 10 DEG from a plane defined by forming fabric supporting surfaces on the lead-in and riser elements. This vertical movement initiates turbulence and agitation in the stock, which acts both to deflocculate the stock and to diminish the possibility of sheet sealing. The apparatus is useable in combination with other known formation and drainage devices which are located either upstream or downstream to augment their performance with thicker, slower moving stock layers.
NO20000778A 1998-06-18 2000-02-17 Apparatus and method for generating turbulence in a blank in a section forming a fourdrinier NO315570B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US9935698A 1998-06-18 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
PCT/CA1999/000573 WO1999066121A1 (en) 1998-06-18 1999-06-17 Apparatus and method of generating stock turbulence in a fourdrinier forming section

Publications (3)

Publication Number Publication Date
NO20000778D0 NO20000778D0 (en) 2000-02-17
NO20000778L true NO20000778L (en) 2000-04-14
NO315570B1 NO315570B1 (en) 2003-09-22

Family

ID=26796017

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20000778A NO315570B1 (en) 1998-06-18 2000-02-17 Apparatus and method for generating turbulence in a blank in a section forming a fourdrinier

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
MXPA03003453A (en) * 2000-10-16 2005-06-22 Essen Roy Van 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
NO315570B1 (en) 2003-09-22
AU4354899A (en) 2000-01-05
EP1005588A1 (en) 2000-06-07
ATE258249T1 (en) 2004-02-15
WO1999066121A1 (en) 1999-12-23
EP1005588B1 (en) 2004-01-21
DE69914295T2 (en) 2004-07-01
BR9906541B1 (en) 2009-01-13
RU2224062C2 (en) 2004-02-20
NO20000778D0 (en) 2000-02-17
PT1005588E (en) 2004-05-31
CA2300280A1 (en) 1999-12-23
CA2300280C (en) 2007-09-11
BR9906541A (en) 2000-10-17
NZ502363A (en) 2001-07-27
DE69914295D1 (en) 2004-02-26
ES2212563T3 (en) 2004-07-16
AU745683B2 (en) 2002-03-28

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