EP0734471A1 - Habillage pour machine a papier - Google Patents
Habillage pour machine a papierInfo
- 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- Withdrawn
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)
- Reinforced Plastic Materials (AREA)
Abstract
Un procédé de fabrication d'une courroie de pressage pour sabot comprend les étapes consistant à acheminer un habillage de base (13) au-dessus d'un tambour rotatif (11) puis à appliquer un revêtement polymère sur ledit habillage (13) au moment dudit acheminement. Le revêtement polymère est imprégné d'un thioxotrope pouvant être soit de la silice fondue, soit un polyamide aromatique.
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 (fr) | 1993-12-15 | 1994-12-14 | Habillage pour machine a papier |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0734471A1 true EP0734471A1 (fr) | 1996-10-02 |
Family
ID=10746614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95902897A Withdrawn EP0734471A1 (fr) | 1993-12-15 | 1994-12-14 | Habillage pour machine a papier |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0734471A1 (fr) |
JP (1) | JPH09507534A (fr) |
AU (1) | AU1215995A (fr) |
CA (1) | CA2179172A1 (fr) |
FI (1) | FI962458A0 (fr) |
GB (1) | GB2284772B (fr) |
WO (1) | WO1995016820A1 (fr) |
Families Citing this family (10)
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 |
ATE364750T1 (de) | 2001-04-18 | 2007-07-15 | Stowe Woodward Ag | Schuhpressenbelt |
EP1293601A1 (fr) | 2001-09-17 | 2003-03-19 | Stowe Woodward Aktiengesellschaft | Bande pour presse à patin |
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 |
ES2514466T3 (es) | 2005-12-02 | 2014-10-28 | Heimbach Gmbh & Co. Kg | Procedimiento para fabricar cintas de máquina papelera impermeables a líquido y dispositivo de revestimiento para el mismo |
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)
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 (fr) | 1988-04-08 | 1989-10-11 | Beloit Corporation | Bande pour une presse à pinçage prolongé |
US4944844A (en) | 1989-07-11 | 1990-07-31 | Beloit Corporation | Polyurethane extended nip press blanket |
Family Cites Families (3)
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 |
-
1993
- 1993-12-15 GB GB9325608A patent/GB2284772B/en not_active Expired - Fee Related
-
1994
- 1994-12-14 WO PCT/GB1994/002731 patent/WO1995016820A1/fr not_active Application Discontinuation
- 1994-12-14 CA CA 2179172 patent/CA2179172A1/fr not_active Abandoned
- 1994-12-14 AU AU12159/95A patent/AU1215995A/en not_active Abandoned
- 1994-12-14 EP EP95902897A patent/EP0734471A1/fr not_active Withdrawn
- 1994-12-14 JP JP7516607A patent/JPH09507534A/ja active Pending
-
1996
- 1996-06-13 FI FI962458A patent/FI962458A0/fi unknown
Patent Citations (10)
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 (fr) | 1988-04-08 | 1989-10-11 | Beloit Corporation | Bande pour une presse à pinçage prolongé |
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)
Title |
---|
See also references of WO9516820A1 |
Also Published As
Publication number | Publication date |
---|---|
CA2179172A1 (fr) | 1995-06-22 |
FI962458A (fi) | 1996-06-13 |
GB2284772A (en) | 1995-06-21 |
GB9325608D0 (en) | 1994-02-16 |
WO1995016820A1 (fr) | 1995-06-22 |
FI962458A0 (fi) | 1996-06-13 |
AU1215995A (en) | 1995-07-03 |
GB2284772B (en) | 1997-11-26 |
JPH09507534A (ja) | 1997-07-29 |
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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 |