EP0103376A2 - Machine pour la fabrication du papier - Google Patents

Machine pour la fabrication du papier Download PDF

Info

Publication number
EP0103376A2
EP0103376A2 EP83304193A EP83304193A EP0103376A2 EP 0103376 A2 EP0103376 A2 EP 0103376A2 EP 83304193 A EP83304193 A EP 83304193A EP 83304193 A EP83304193 A EP 83304193A EP 0103376 A2 EP0103376 A2 EP 0103376A2
Authority
EP
European Patent Office
Prior art keywords
belt
sheet
paper
electro
machine
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.)
Withdrawn
Application number
EP83304193A
Other languages
German (de)
English (en)
Other versions
EP0103376A3 (fr
Inventor
Colin Francis Baker
Brian Edward Evans
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.)
Wiggins Teape Group Ltd
Original Assignee
Wiggins Teape Group 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
Application filed by Wiggins Teape Group Ltd filed Critical Wiggins Teape Group Ltd
Publication of EP0103376A2 publication Critical patent/EP0103376A2/fr
Publication of EP0103376A3 publication Critical patent/EP0103376A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • D21F1/10—Wire-cloths
    • 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
    • D21F1/0027—Screen-cloths
    • D21F1/0063—Perforated sheets
    • 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
    • D21F1/10—Wire-cloths
    • D21F1/12—Seams thereof
    • D21F1/14—Seams thereof welded

Definitions

  • This invention relates to paper making machinery and in particular to foraminous elements for use in such machinery which support the paper sheet as it is drained and dried.
  • an aqueous dispersion of paper making fibres is initially drained on a Fourdrinier wire consisting of an endless belt woven from corrosion resistant strands, for example of phosphor bronze or nylon.
  • a Fourdrinier wire consisting of an endless belt woven from corrosion resistant strands, for example of phosphor bronze or nylon.
  • the lower surface of the sheet conforms to the profile of the wire giving rise to a "wire mark" in the sheet when finally dried.
  • the relative roughness of the wire stemming from its woven character, causes wear of the foils and vacuum boxes over which it passes and also of the wire itself, necessitating relatively frequent replacement of these components.
  • the paper sheet After the paper sheet has acquired sufficient internal coherence to be self-supporting, it is lifted from the Fourdrinier wire as it passes over the couch roll and is carried through a wet press section by absorbent press felts.
  • the wet press section consists of one or more pairs of opposed rolls which subject the sheet and supporting felts to nip pressure whereby moisture is driven from the sheet and absorbed by the felts.
  • the partly dried sheet is then passed on further felts through a dryer section consisting of a substantial number of large rotating steam heated drying cylinders against which the sheet is held until the moisture content is reduced to that required in the finished sheet.
  • the dryer section accounts for a major proportion of the energy usage and physically constitutes 50% or more of the length of the paper machine, it removes a relatively small proportion of the water from the sheet, as compared with the Fourdrinier wire and press section. Operating, capital and maintenance costs are therefore high in relation to the effectiveness of the dryer section.
  • the invention provides an endless foraminous belt for releasing moisture from fibrous paper making dispersions or sheets formed therefrom, comprising a flexible, corrosion and stretch resistant micro perforated sheet having a high tensile strength.
  • the invention provides a Fourdrinier paper machine incorporating a belt as above defined.
  • the invention provides a Fourdrinier paper machine having a press drying section incorporating a belt as above defined.
  • the invention provides a paper machine having a machine glazing cylinder and incorporating a belt as above defined, the belt being arranged so as to bear against the outer surface of a paper sheet being dried on the cylinder during movement of the paper sheet around a substantial proportion of the circumference of the cylinder.
  • the invention provides a paper machine having a dryer section incorporating belts as above defined.
  • the foraminous belt of the invention is preferably made from a metal sheet since, when used in a press drying context, it will be required to withstand temperatures of 100° to 150°C with a stretch of less than 1%.
  • plastics sheeting may be used where the belt is to be used as a substitute for a Fourdrinier wire at relatively low temperatures.
  • the necessary perforation may be achieved by mechanical or laser punching, or by spark perforation techniques.
  • a perforated metallic sheet for example of nickel, may alternatively be formed by electrode deposition on a matrix carrying projections dimensioned and spaced in accordance with the requirements for the perforations.
  • the matrix is provided with a conductive release coating which both promotes the electro deposition and facilitates removal of the resulting sheet from the matrix after formation.
  • the projections are frusto-conical in configuration so as to facilitate release of the sheet.
  • the sheet requires to be sufficiently flexible to conform to rolls in the region of 15 centrimetres in diameter whilst having a tensile strength of about 40 to 60 Newtons per 15mm.
  • a nickel sheet of from .1 to .15mm in thickness has been found to meet these requirements.
  • This material also has a smoothness of from 200 to 300 Bendsten (in paper terms). This is substantially smoother than the woven material from which Fourdrinier wires are conventionally made. Because of the absence of wire knuckles characteristic of Fourdrinier wires, the formation of a wire mark in the paper made using sheets according to the invention is avoided.
  • the sheet For use in a press drying context, the sheet should have sufficient permeability to pass steam at a rate of at least 170 cubic metres per square metre per hour at atmospheric pressure. It is preferred to use an endless belt made from electro formed perforated nickel sheet having the following characteristics
  • the sheet will need to be thicker (probably about 0.15mm in thickness for a metal sheet) in order to maintain the desired tensile strength.
  • the particular configuration chosen will however depend upon the paper making furnish being handled and the various operating conditions under which the belt will be used including the speed of operation and the vacuum to which it will be subjected.
  • the seamless joint between the ends of the belt may be formed by butt welding the ends and micro perforating the welds to produce even permeability across the sheet. In this case it may be necessary to reduce the thickness before perforation.
  • the seamless joint may be formed by electro-deposition between the ends of the belt and subsequently micro perforating the electro-deposited portion to produce even permeability across the sheet.
  • the electro-deposition may be carried out on an endless matrix.
  • the configuration shown consists of an electro formed nickel sheet 1 having circular perforations 2 therein of the same dimensions and regularly spaced.
  • the holes 2 are tapered in a direction perpendicular to the plane of the sheet 1, having been formed by projections on an electro forming matrix.
  • the process of electro forming such sheets is itself well known and forms no part of this invention.
  • Figure 3 is a sectional detail similar to that of Figure 2 but showing a sheet 3 having perforations 4 with parallel sides. Perforations of this kind may be formed in metal or plastics sheets by known methods of mechanical or laser punching.
  • Figure 4 shows a sheet 5 made of plastics material and having perforations 6 of an irregular size and spacing formed by well known methods of spark perforation.
  • the seamless joint may be formed by electro-deposition between the ends of the belt and subsequently micro perforating the electro-deposited portion to produce even permeability across the sheet.
  • the electro-deposition may be carried out on an endless matrix.
  • Figure 5 shows diagrammatically the wet end of a paper machine having a Fourdrinier "wire" 8 in a conventional arrangement including a headbox 9, foils 10, vacuum boxes 11, a breast roll 12 and couch roll 13.
  • the "wire” 8 consists of a perforated sheet of metal or plastics material according to the invention.
  • the press drying assembly of Figure 6 comprises two heated drying cylinders 10 and 11 rotatable about parallel axes 12 and 13 respectively.
  • the cylinders 10 and 11 may, for example, be heated by steam and are movable towards each other, as indicated by the arrows 14, to form a nip at 15.
  • the assembly shown also comprises two endless metallic foraminous belts 16 and 17 according to the invention.
  • a tensioning roll 18 From a tensioning roll 18 the element 16 is led around a lead in roll 25, under a pressure applying roll 19, around the cylinders 10 and 11 and a second pressure applying roll 20, and back to the tensioning roll 18.
  • the belt 17 is led from a tensioning roll 21 around a guide roll 22. It is then taken around the cylinder 10, inside the belt 16, and around the cylinder 11 outside the belt 16. It is then led around the pressure applying roll 20 inside the belt 16 and then, via a second guide roll 23, back to the tensioning roll 21.
  • the paper sheet 24 to be press dried is fed into the assembly around the lead in roll 25 so as to be carried around the cylinder 10 between the belts 16 and 17.
  • the cylinders 10 and 11 are maintained at a temperature of from 100°C to 150°C so that the sheet 24 is heated substantially before entering the nip between the cylinder 10 and roll 19. Subsequently, the sheet is trapped between the belts 16 and 17 as it passes around the cylinders 10 and 11, optionally with nip pressure being applied between these cylinders. As the paper dries, water is released as vapour through the perforations in the belts 16 and 17. The fineness of the perforations in these belts is such that no significant "wire" marking occurs and both sides of the paper sheet exhibit substantially the same surface characteristics.
  • the tension and pressure applied during passage around the cylinders 10 and 11 also ensures that the paper does not shrink as it dries.
  • the press drying arrangement of Figure 7 only utilizes one metallic foraminous belt according to the invention.
  • the assembly shown comprises a drying cylinder, steam heated to between 100°C to 150°C, 30 around which is led a foraminous belt 31 according to the invention.
  • the belt 31 is held in engagement with the cylinder 30 by a lead in roll 32 and a lead out roll 33.
  • the return path of the belt 31 is constrained by guide rolls 34 and a tensioning roll 35.
  • Press rolls 36 A, B, C, D, E are arranged around the cylinder 30 so as to apply nip pressure against the cylinder as shown.
  • a paper sheet 37 to be dried is led around the roll 32 so as to lie between the foraminous belt 31 and the cylinder 30.
  • pressure is applied by the pressure applying rolls 36 A to E and moisture released as vapour through the perforations in the belt 31.
  • the cylinder 30 may also be of substantial size, highly polished so as to form an M.G. or Yankee cylinder and the pressure applying rolls 36 dispensed with. This will result in the production of machine glazed paper having a smoother reverse surface than is usual with such paper.
  • the press rolls 36A and 36B may also be optionally retained as an M.G. press.
  • Figure 8 shows a conventional paper machine dryer section having an upper bank of steam heated drying cylinders 40 and a lower bank of similar cylinders 41.
  • a foraminous belt 42 in accordance with the invention is guided by means of rolls 43 so as to wrap around the upwardly facing surfaces of the cylinders 41, whilst a tensioning device shown diagrammatically at 44, maintains tension in the belt.
  • a second foraminous belt 45 in accordance with the invention is guided by rolls 46 and tensioned by tensioning device 47 so as to wrap around the lower surfaces of the cylinders 41.
  • a paper sheet 48 to be dried is fed from the wet press of the paper machine (not shown and not forming part of this invention) between the first cylinder 41 and the foraminous belt 45 and then alternately around the cylinders 40 and 41.
  • the paper sheet passes around the cylinders 40 and 41 it is held firmly in contact therewith by the foraminous belts 44 and 45. This both resists the tendency of the sheet to shrink as it dries whilst readily releasing water vapour through the perforations in the belts.
  • the sheet may be reeled up or led through a size press and a further similar dryer section prior to being reeled up.
  • a size press not reel up assembly form part of this invention.

Landscapes

  • Paper (AREA)
  • Window Of Vehicle (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP83304193A 1982-07-22 1983-07-19 Machine pour la fabrication du papier Withdrawn EP0103376A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8221233 1982-07-22
GB8221233 1982-07-22

Publications (2)

Publication Number Publication Date
EP0103376A2 true EP0103376A2 (fr) 1984-03-21
EP0103376A3 EP0103376A3 (fr) 1985-01-09

Family

ID=10531845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304193A Withdrawn EP0103376A3 (fr) 1982-07-22 1983-07-19 Machine pour la fabrication du papier

Country Status (6)

Country Link
EP (1) EP0103376A3 (fr)
JP (1) JPS5930987A (fr)
BR (1) BR8303857A (fr)
DK (1) DK331583A (fr)
FI (1) FI832629A (fr)
NO (1) NO832643L (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005219A1 (fr) * 1985-03-01 1986-09-12 Oy Nokia Ab Structure plate permeable aux liquides, et son procede de fabrication
WO1999013153A1 (fr) * 1997-09-11 1999-03-18 The Procter & Gamble Company Milieu de sechage a orifice limiteur et a energie de surface reduite, procede de fabrication et procede de fabrication de papier a l'aide de celui-ci
WO2003097272A1 (fr) * 2002-05-15 2003-11-27 Metso Automation Oy Procede de fabrication d'une toile et toile
US7128810B2 (en) 2002-10-10 2006-10-31 Albany International Corp. Anti-rewet press fabric
US8388812B2 (en) 2008-12-12 2013-03-05 Albany International Corp. Industrial fabric including spirally wound material strips
US8454800B2 (en) 2009-01-28 2013-06-04 Albany International Corp. Industrial fabric for producing tissue and towel products, and method of making thereof
WO2014001217A1 (fr) * 2012-06-25 2014-01-03 Voith Patent Gmbh Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous
US8688874B2 (en) 2007-05-15 2014-04-01 Chronologic Pty. Ltd. Method and system for reducing triggering latency in universal serial bus data acquisition
US8758569B2 (en) 2008-09-11 2014-06-24 Albany International Corp. Permeable belt for nonwovens production
US8822009B2 (en) 2008-09-11 2014-09-02 Albany International Corp. Industrial fabric, and method of making thereof
US20220081837A1 (en) * 2019-02-08 2022-03-17 Voith Patent Gmbh Method for producing a paper machine clothing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9199412B2 (en) * 2012-12-28 2015-12-01 Albany International Corp. Industrial fabric and method of welding seam area using ultrasonic welding

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB902375A (en) * 1961-05-15 1962-08-01 Dominion Eng Works Ltd Continuous perforated sheet belt for paper making machines and the method of making said belt
US3121660A (en) * 1961-02-13 1964-02-18 Jr Edward H Hall Fourdrinier wire and method of making the same
AT235679B (de) * 1960-07-23 1964-09-10 Heimbach Gmbh Thomas Josef Endlose Filterbahn zur direkten Blattbildung auf Papier-, Pappen-, Karton- od. dgl. Maschinen
US3756907A (en) * 1969-12-01 1973-09-04 Freudenberg Carl Production of perforated non woven fibrous webs
GB2052586A (en) * 1979-05-19 1981-01-28 St Annes Board Mill Co Ltd Drying paper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT235679B (de) * 1960-07-23 1964-09-10 Heimbach Gmbh Thomas Josef Endlose Filterbahn zur direkten Blattbildung auf Papier-, Pappen-, Karton- od. dgl. Maschinen
US3121660A (en) * 1961-02-13 1964-02-18 Jr Edward H Hall Fourdrinier wire and method of making the same
GB902375A (en) * 1961-05-15 1962-08-01 Dominion Eng Works Ltd Continuous perforated sheet belt for paper making machines and the method of making said belt
US3756907A (en) * 1969-12-01 1973-09-04 Freudenberg Carl Production of perforated non woven fibrous webs
GB2052586A (en) * 1979-05-19 1981-01-28 St Annes Board Mill Co Ltd Drying paper

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005219A1 (fr) * 1985-03-01 1986-09-12 Oy Nokia Ab Structure plate permeable aux liquides, et son procede de fabrication
WO1999013153A1 (fr) * 1997-09-11 1999-03-18 The Procter & Gamble Company Milieu de sechage a orifice limiteur et a energie de surface reduite, procede de fabrication et procede de fabrication de papier a l'aide de celui-ci
WO2003097272A1 (fr) * 2002-05-15 2003-11-27 Metso Automation Oy Procede de fabrication d'une toile et toile
US7128810B2 (en) 2002-10-10 2006-10-31 Albany International Corp. Anti-rewet press fabric
US8688874B2 (en) 2007-05-15 2014-04-01 Chronologic Pty. Ltd. Method and system for reducing triggering latency in universal serial bus data acquisition
US8758569B2 (en) 2008-09-11 2014-06-24 Albany International Corp. Permeable belt for nonwovens production
US8822009B2 (en) 2008-09-11 2014-09-02 Albany International Corp. Industrial fabric, and method of making thereof
US8394239B2 (en) 2008-12-12 2013-03-12 Albany International Corp. Industrial fabric including spirally wound material strips
US8388812B2 (en) 2008-12-12 2013-03-05 Albany International Corp. Industrial fabric including spirally wound material strips
US8454800B2 (en) 2009-01-28 2013-06-04 Albany International Corp. Industrial fabric for producing tissue and towel products, and method of making thereof
US9903070B2 (en) 2009-01-28 2018-02-27 Albany International Corp. Industrial fabric for production of nonwovens, and method of making thereof
WO2014001217A1 (fr) * 2012-06-25 2014-01-03 Voith Patent Gmbh Procédé de réalisation de trous débouchants dans un substrat de conception bidimensionnelle, notamment un film en forme de bande à l'aide de différents faisceaux laser ; habillage pour machine à papier pourvu de différents trous
US20220081837A1 (en) * 2019-02-08 2022-03-17 Voith Patent Gmbh Method for producing a paper machine clothing
US11795618B2 (en) * 2019-02-08 2023-10-24 Voith Patent Gmbh Method for producing a paper machine clothing

Also Published As

Publication number Publication date
DK331583A (da) 1984-01-23
FI832629A0 (fi) 1983-07-19
BR8303857A (pt) 1984-02-28
FI832629A (fi) 1984-01-23
JPS5930987A (ja) 1984-02-18
EP0103376A3 (fr) 1985-01-09
NO832643L (no) 1984-01-23
DK331583D0 (da) 1983-07-19

Similar Documents

Publication Publication Date Title
US4946731A (en) Construction for an extended nip press belt
CA2233608C (fr) Procede et dispositif permettant d'egoutter l'eau de bandes de papier ou de carton
US7959764B2 (en) Forming fabrics for fiber webs
EP0359696B1 (fr) Procédé et dispositif de fabrication d'une bande de papier
CA1176492A (fr) Machine a papier a toiles jumelees, et mode de fonctionnement connexe
EP0103376A2 (fr) Machine pour la fabrication du papier
CA2395748C (fr) Courroie de presse a ligne de contact allongee de type a sabot
US20060060321A1 (en) Machine for producing a fibrous web
NO152141B (no) Pressparti for fjerning av vann fra fiberbaner
DE102018119686A1 (de) Papiermaschine
US6254728B1 (en) Method and machine for manufacturing a fibrous pulp web
KR100362492B1 (ko) 제지기계용하이브리드포머
CA1089271A (fr) Procede de fabrication de papier, carton ou autre materiau, fibreux equivalents a coefficient d'elasticite et de friction eleves
EP0519920B1 (fr) Methode et appareillage pour le transfert de presse coucheuse
CA1046321A (fr) Methode et dispositif de reparation d'une feuille fibreuse
CA2024858C (fr) Courroie speciale pour presse lineaire de machines a papier
EP0101202A2 (fr) Machine pour la fabrication du papier
KR100995543B1 (ko) 개선된 섬유 시이트
EP0102173A2 (fr) Machine pour la fabrication du papier
US6488814B2 (en) Pressing arrangement
JPH10508915A (ja) 形成布の縁の捲れを減らす方法
WO2017162685A1 (fr) Dispositif et procédé de fabrication d'une bande de matière fibreuse multicouche
JPS6313269Y2 (fr)
DE102016218101A1 (de) Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn in einer Papiermaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850910

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BAKER, COLIN FRANCIS

Inventor name: EVANS, BRIAN EDWARD