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1. WO1997030213 - VACUUM ISOLATED DEWATERING METHOD AND UNIT

Publication Number WO/1997/030213
Publication Date 21.08.1997
International Application No. PCT/US1997/001677
International Filing Date 11.02.1997
Chapter 2 Demand Filed 10.09.1997
IPC
D21F 1/20 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
1Wet end of machines for making continuous webs of paper
18Shaking-apparatus for wire-cloths and associated parts
20in Fourdrinier machines
D21F 1/48 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
1Wet end of machines for making continuous webs of paper
48Suction apparatus
CPC
D21F 1/20
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
1Wet end of machines for making continuous webs of paper
18Shaking apparatus for wire-cloths and associated parts
20in Fourdrinier machines
D21F 1/483
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
1Wet end of machines for making continuous webs of paper
48Suction apparatus
483Drainage foils and bars
Applicants
  • THERMO FIBERTEK INC. [US]/[US]
  • SMURFIT CARTON Y PAPEL DE MEXICO, S.A. DE C.V. [MX]/[MX]
Inventors
  • CABRERA Y LOPEZ CARAM, Luis Fernando
  • BACHAND, Jeffrey, P.
Agents
  • SANTUCCI, Ronald, R.
Priority Data
08/600,83313.02.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VACUUM ISOLATED DEWATERING METHOD AND UNIT
(FR) UNITE D'ESSORAGE ISOLEE PAR UN VIDE ET PROCEDE CORRESPONDANT
Abstract
(EN)
A drainage device and method which provides for drainage from paper or pulp stock on a fabric (10) in a sheet- or mat-making machine which includes a primary blade (26) and trail blade (28) with a gap (24) therebetween for drainage wherein the size of the gap (24) controls drainage and the primary blade (26) is so configured so as to force a portion of the drained liquid through the fabric to create paper stock activity and disbursement while minimizing turbulence and maintaining laminar flow of the machine direction along with providing reinforcement of CD shear.
(FR)
Cette invention concerne un dispositif et un procédé d'égouttage du papier ou de la pâte de papier sur un tissu (10) dans une machine de fabrication de papier ou de matelas de fibres. Ledit dispositif comporte une lame primaire (26) et une lame arrière (28) entre lesquelles se trouve un espace (24) destiné à l'égouttage, la taille dudit espace (24) permettant une régulation de l'égouttage et la lame primaire (26) étant conçue de façon à forcer une partie du liquide de drainage à traverser le tissu pour créer une activité de la pâte à papier et un déversement tout en minimisant la turbulence et en conservant un flux laminaire dans la direction de la machine, et tout en assurant un renforcement du cisaillement suivant la direction transversale à la machine.
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