EP0734471A1 - Papiermaschinenbespannung - Google Patents

Papiermaschinenbespannung

Info

Publication number
EP0734471A1
EP0734471A1 EP95902897A EP95902897A EP0734471A1 EP 0734471 A1 EP0734471 A1 EP 0734471A1 EP 95902897 A EP95902897 A EP 95902897A EP 95902897 A EP95902897 A EP 95902897A EP 0734471 A1 EP0734471 A1 EP 0734471A1
Authority
EP
European Patent Office
Prior art keywords
papermachine clothing
polymer
thixotrope
base cloth
making
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Withdrawn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
EP95902897A
Other languages
English (en)
French (fr)
Inventor
Craig Valentine
Ian Christison Sayers
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.)
Voith Fabrics Heidenheim GmbH and Co KG
Original Assignee
Scapa 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 Scapa Group Ltd filed Critical Scapa Group Ltd
Publication of EP0734471A1 publication Critical patent/EP0734471A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D21F3/0227—Belts or sleeves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D29/00—Producing belts or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/733—Fourdrinier belts

Definitions

  • the present invention relates to papermachine clothing and particularly but not exclusively to shoe press belts.
  • One form of papermachine clothing comprises a woven or non woven base cloth to which a coating of polymer is applied.
  • an endless base cloth is fed around a series of rollers and around a part of a horizontally mounted rotatable drum. As the belt passes around the drum heat-softened polymer is applied into the nip between the belt and the drum.
  • the present invention has been made from a consideration of this problem.
  • a method of making papermachine clothing comprising the step of feeding a base cloth over a rotating body and applying a polymer coating to the base cloth as the base cloth is fed over the rotating body, wherein the polymer coating is impregnated with a thixotrope.
  • the thixotrope acts to increase the viscosity of the "fluid" polymer once applied to the base cloth.
  • the toughness, modulus and abrasion resistance of the papermachine clothing is significantly improved by incorporation of the thixotrope into the polymer coating.
  • papeptiachine clothing comprising a base cloth having a coating of polymer thereon, wherein the polymer is impregnated with a thixotrope.
  • Aramid fibres such as KEVLAR (RTM) (para-phenylene terephthalamide) are preferred.
  • the fibres are preferably-chopped into lengths in the range from 0.8mm to 4.00mm and preferably have a diameter in the order of 12u ⁇ .
  • KEVLAR (RTM) is particularly preferred in that the random orientation and physical entanglement of the fibres and fibrils thereof align in the direction of applied shear thus increasing the viscosity of the polymer.
  • fused silica may be used as a thixotrope.
  • the polymer is preferably thermoset. Polyurethane is preferred.
  • a series of infra-red heaters 14 are provided adjacent the drum 11 on the side of the base cloth 13 which is remote from the drum 11.
  • a polyurethane coating may be applied to the base cloth 13 by utilising a feed nozzle to project the heat softened polymer into the nip 15 between the base cloth 13 and the top of the drum 11.
  • the polyurethane coating is impregnated with chopped aramid fibres in order to prevent sagging of the polymer on the drum and to improve the abrasion resistance of the belt.
  • the fibres are added in substantially equal amounts to the thermoset precursor material.
  • the aramid containing precursors e.g. polyol and isocyanate
  • the amount of aramid fibre added is preferably less than 3% by weight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Reinforced Plastic Materials (AREA)
EP95902897A 1993-12-15 1994-12-14 Papiermaschinenbespannung Withdrawn EP0734471A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9325608 1993-12-15
GB9325608A GB2284772B (en) 1993-12-15 1993-12-15 Papermachine clothing
PCT/GB1994/002731 WO1995016820A1 (en) 1993-12-15 1994-12-14 Papermachine clothing

Publications (1)

Publication Number Publication Date
EP0734471A1 true EP0734471A1 (de) 1996-10-02

Family

ID=10746614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902897A Withdrawn EP0734471A1 (de) 1993-12-15 1994-12-14 Papiermaschinenbespannung

Country Status (7)

Country Link
EP (1) EP0734471A1 (de)
JP (1) JPH09507534A (de)
AU (1) AU1215995A (de)
CA (1) CA2179172A1 (de)
FI (1) FI962458A7 (de)
GB (1) GB2284772B (de)
WO (1) WO1995016820A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5792323A (en) * 1995-09-07 1998-08-11 Albany International Corp. Spiral base structres for long nip paper machine press belts
US6447648B1 (en) * 1996-08-13 2002-09-10 Metso Paper, Inc. Anisotropic reinforced ribbon-cast blanket for extended nip press
FI103209B2 (fi) † 1998-01-02 2005-04-04 Valmet Corp Menetelmä puristus- tai siirtohihnan pinnoittamiseksi ja vastaava pinnoitettu hihna
EP1251203B1 (de) 2001-04-18 2007-06-13 Stowe Woodward Aktiengesellschaft Schuhpressenbelt
EP1293601A1 (de) 2001-09-17 2003-03-19 Stowe Woodward Aktiengesellschaft Schuhpressenbelt
JP3803071B2 (ja) * 2002-06-11 2006-08-02 ヤマウチ株式会社 製紙工業用弾性ベルトおよびその製造方法
US7011730B2 (en) 2002-12-30 2006-03-14 Albany International Corp. Structure for process belt
DE102004011665A1 (de) * 2004-03-10 2005-10-06 Stowe Woodward Ag Integraler Schuhpressenbelt
PT1793036E (pt) 2005-12-02 2014-11-11 Heimbach Gmbh & Co Kg Processo de produção de cintas impermeáveis para máquinas de papel e um dispositivo de revestimento para as cintas
JP4616403B1 (ja) * 2009-11-27 2011-01-19 イチカワ株式会社 抄紙用プロセスベルト

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287115A (en) 1979-11-13 1981-09-01 The Dow Chemical Company Filler mixtures and thermoset resins containing same
US4299868A (en) 1978-04-01 1981-11-10 Bayer Aktiengesellschaft Coating compositions
US4308184A (en) 1978-04-01 1981-12-29 Bayer Aktiengesellschaft Heat cross linkable polyurethane coating compositions
FR2543150A1 (fr) 1983-03-21 1984-09-28 Altulor Sa Compositions pour revetement de polymere acrylique et produits finis ainsi revetus
US4640950A (en) 1983-06-22 1987-02-03 Takeda Chemical Industries, Ltd. Thixotropic polyurethane resin compositions
US4752519A (en) 1986-12-10 1988-06-21 Albany International Corp. Papermakers felt with a resin matrix surface
US4795480A (en) 1986-12-10 1989-01-03 Albany International Corp. Papermakers felt with a resin matrix surface
EP0336876A2 (de) 1988-04-08 1989-10-11 Beloit Corporation Tuch für Breit-Nip-Presse
US4944844A (en) 1989-07-11 1990-07-31 Beloit Corporation Polyurethane extended nip press blanket

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251928A (en) * 1978-05-30 1981-02-24 Asten Group Inc. Metal impregnated dryer fabric
US5073235A (en) * 1990-04-12 1991-12-17 The Procter & Gamble Company Process for chemically treating papermaking belts
US5207873A (en) * 1992-04-17 1993-05-04 Huyck Corporation Anti-contaminant treatment for papermaking fabrics

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299868A (en) 1978-04-01 1981-11-10 Bayer Aktiengesellschaft Coating compositions
US4308184A (en) 1978-04-01 1981-12-29 Bayer Aktiengesellschaft Heat cross linkable polyurethane coating compositions
US4287115A (en) 1979-11-13 1981-09-01 The Dow Chemical Company Filler mixtures and thermoset resins containing same
FR2543150A1 (fr) 1983-03-21 1984-09-28 Altulor Sa Compositions pour revetement de polymere acrylique et produits finis ainsi revetus
US4640950A (en) 1983-06-22 1987-02-03 Takeda Chemical Industries, Ltd. Thixotropic polyurethane resin compositions
US4752519A (en) 1986-12-10 1988-06-21 Albany International Corp. Papermakers felt with a resin matrix surface
US4795480A (en) 1986-12-10 1989-01-03 Albany International Corp. Papermakers felt with a resin matrix surface
EP0336876A2 (de) 1988-04-08 1989-10-11 Beloit Corporation Tuch für Breit-Nip-Presse
US4944820A (en) 1988-04-08 1990-07-31 Beloit Corporation Method for making a blanket for an extended nip press
US4944844A (en) 1989-07-11 1990-07-31 Beloit Corporation Polyurethane extended nip press blanket

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9516820A1

Also Published As

Publication number Publication date
GB9325608D0 (en) 1994-02-16
FI962458A0 (fi) 1996-06-13
WO1995016820A1 (en) 1995-06-22
AU1215995A (en) 1995-07-03
GB2284772B (en) 1997-11-26
CA2179172A1 (en) 1995-06-22
JPH09507534A (ja) 1997-07-29
GB2284772A (en) 1995-06-21
FI962458L (fi) 1996-06-13
FI962458A7 (fi) 1996-06-13

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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

17P Request for examination filed

Effective date: 19960531

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH FABRICS HEIDENHEIM GMBH & CO.KG

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20020622