EP1251203B1 - Bande pour presse à patin - Google Patents

Bande pour presse à patin Download PDF

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Publication number
EP1251203B1
EP1251203B1 EP01109618A EP01109618A EP1251203B1 EP 1251203 B1 EP1251203 B1 EP 1251203B1 EP 01109618 A EP01109618 A EP 01109618A EP 01109618 A EP01109618 A EP 01109618A EP 1251203 B1 EP1251203 B1 EP 1251203B1
Authority
EP
European Patent Office
Prior art keywords
shoe
press
press belt
belt according
millimetres
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.)
Expired - Lifetime
Application number
EP01109618A
Other languages
German (de)
English (en)
Other versions
EP1251203A1 (fr
Inventor
Franz Danzler
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.)
Stowe Woodward AG
Original Assignee
Stowe Woodward AG
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 Stowe Woodward AG filed Critical Stowe Woodward AG
Priority to AT01109618T priority Critical patent/ATE364750T1/de
Priority to DE50112624T priority patent/DE50112624D1/de
Priority to EP01109618A priority patent/EP1251203B1/fr
Priority to US10/475,632 priority patent/US7014734B2/en
Priority to CA002434776A priority patent/CA2434776C/fr
Priority to PCT/EP2002/003129 priority patent/WO2002084020A1/fr
Publication of EP1251203A1 publication Critical patent/EP1251203A1/fr
Application granted granted Critical
Publication of EP1251203B1 publication Critical patent/EP1251203B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/901—Impermeable belts for extended nip press

Definitions

  • the invention relates to a shoe press belt according to the preamble of claim 1.
  • Such a shoe press belt which is also referred to in German as Preßmantel, is used in paper, board or tissue machines for extensive dewatering of the respective product (wet press) or for finishing the surface (calender) (see, eg EP 0 939 162 A2 ).
  • the corresponding wet presses or calenders have an extended press nip ("Preßnip") and are therefore also referred to as shoe presses.
  • the shoe press belt or the press cover On its back (bottom) with the actual press shoe in sliding contact and must therefore have on this page excellent sliding properties.
  • the shoe press belt comes into contact with a dewatering felt (and via this indirectly with the respective product) or - in the case of a calender - also directly with the product, which is pressed by a rotating roller.
  • Shoe press belts are known in various designs from the prior art.
  • EP 0 420 372 B1 a generic shoe press belt with a base fabric in the form of an endless loop with inside and outside, smooth polymer resin coating, which makes the fabric impermeable to liquids and gives it a uniform thickness.
  • polymer resin which forms the elastomer here is called polyurethane.
  • the tape has a smooth, liquid-impermeable belt layer on the back side and a carrier web and a fiber layer attached thereto on the front side.
  • a generic press cover for a shoe press which comprises an elastomeric jacket material and two layers of reinforcing threads.
  • the jacket material reference is here made, on the one hand, to a swellable material and, on the other hand, to polyurethane.
  • a paper machine fabric especially a shoe press belt - described, in which a carrier fabric is provided with a polymer coating, which tixotropic material (for example, aramid or silica glass).
  • tixotropic material for example, aramid or silica glass.
  • a base material is also specifically called polyurethane.
  • the invention is based on the object of providing a shoe press belt with further improved service properties, in particular optimized elasticity properties and advantageous multi-dimensional curvature behavior, in order to achieve a smooth machine run with low drive power and a high overall running time.
  • the invention includes the basic idea of forming the shoe press belt with an elastomer layer of a very soft and conformable (and also reasonably inexpensive) elastomer, whereby it can be given an unusually low bending moment and a low overall modulus of elasticity.
  • the combination of these advantageously adjusted parameters results in the achievement of the abovementioned, in several aspects improved performance properties.
  • the soft rubber elastomer layer of the belt comprises a highly abrasion resistant rubber compound of a plurality of rubber compositions. These compositions are particularly homogeneously mixed in the compound.
  • the hardness of the soft rubber layer is preferably in the range between 20 and 50 P + J, in a currently regarded as a standard variant execution at about 35 P + J.
  • a fiber reinforcement or a composite material is incorporated in the elastomer layer.
  • This textile reinforcing component is preferably formed according to the current state of knowledge as a scrim in the circumferential and / or longitudinal direction of the belt.
  • the use of a fabric as a reinforcing layer is possible.
  • modified glass fibers or carbon fibers but in particular high-strength plastic fibers, can be used as reinforcing material.
  • polyester and polyamide copolymers or aramid particular consideration is given to polyester and polyamide copolymers or aramid.
  • combinations or mixtures of these materials can also be used appropriately.
  • the reinforcing layer is preferably incorporated close to the back in the elastomer-textile composite, on the one hand not to affect the rubber-elastic behavior on the front of the belt and on the other hand the lowest possible bending moment at the shoe curvature and at the belt ends and thus overall the intended optimization of the multi-dimensional curvature behavior to ensure.
  • the total thickness of the Belts in particular in the range between 5 and 10 mm, by default at about 7.5 mm, is selected.
  • the front of the belt can be made smooth, which will be particularly useful when used in a calender. But it can - especially for use in a wet press - also have a pronounced structure. At present, a structure with recesses in the form of blind holes appears to be preferred. These can be formed in particular approximately cylindrical and isolated from each other. But there are also structures with interconnected recesses, groove structures or similar. applicable.
  • the open cross-sectional area of the structured front (ie, the total area of the recesses) suitably accounts for 10 to 50% of the frontal total area of the belt.
  • an area fraction of the apertures of about 20% appears appropriate.
  • the recesses have in particular lateral dimensions in the range between 0.5 and 5 mm, in particular between 1 and 3 mm. Their depth is suitably in the same range.
  • the shoe press belt has a significantly reduced stiffness compared to conventional Belts or - converted to the cross-section - bending stress.
  • force is preferably 17 N or less, in particular 13 N or less, and the Bending stress is below 110 N / cm 2 and in particular below 90 N / cm 2 .
  • a force of 11 N and a bending stress of 70 N / cm 2 were measured.
  • a press shoe 5 is disposed opposite a press shoe 3, and in the press nip 7 formed between both, a paper web 13 is dewatered between a shoe press belt 9 sliding on the press shoe 3, a press felt 11 and the surface of the press roll 5.
  • the shoe press belt 9 must on the one hand have an elasticity and flexibility which ensures the best possible contact with the curved surface of the press shoe 3 and the uniform application of an elastic pressure to the paper web 13 (via the press felt 11). On the other hand, it must be designed sufficiently stable in order to be able to cope with the high continuous load (tensile, compressive and Schwingungsbeansrpuchung) in the press nip 7 over an economically acceptable life.
  • the hardness of the soft rubber is in the standard version at 35 P + J, but can be varied according to customer requirements by appropriate variation and mixture of rubber compositions within wide limits.
  • the soft rubber can be used at operating temperatures above 100 ° C in continuous operation and can withstand temperature peaks of up to approx. 130 ° C.
  • a shoe press belt 9 suitable for meeting these requirements is shown schematically in cross-section in FIG. 2.
  • This shoe press belt 9 has as a base a soft rubber band 9a, near the back of a textile reinforcing layer 9b is provided with a scrim of carbon fibers or modified glass fibers or aramid fibers.
  • the total thickness of the belt is 7.5 mm; in the area of the lateral lips 9c approx. 5 mm.
  • blind holes 9d with a diameter of 2.5 mm and a depth of 2 mm. The total area of the openings is 20% of the front surface of the Belt.
  • the embodiment of the invention is not limited to this example, but also in a variety of modifications - both in terms of the materials of the individual components as well as in terms of geometric dimensions - possible.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Polarising Elements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Glass Compositions (AREA)

Claims (13)

  1. Bande pour presse à patin (9) d'une presse humide ou d'une calandre avec une fente de pression prolongée, en particulier pour une machine à papier, à carton ou à papier de soie, comportant une couche élastomère (9a) flexible, imperméable aux liquides, et une couche de renfort (9b) textile, caractérisée en ce que la couche élastomère (9a) comporte un caoutchouc mou, à savoir un composite de caoutchouc très résistant à l'abrasion, formé par plusieurs composés de caoutchouc et/ou de caoutchouc de silicone, avec une dureté dans le domaine entre 5 et 100 P+J.
  2. Bande pour presse à patin selon la revendication 1, caractérisée en ce que la dureté de la couche élastomère (9a) se situe dans le domaine entre 20 et 50 P+J, de préférence 35 P+J environ.
  3. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée en ce que la couche de renfort (9b) textile, dans la position d'utilisation, est insérée dans la couche élastomère (9a) à proximité de la face arrière orientée vers un patin de presse(3), de telle sorte qu'elle n'induit pas de variation sensible des propriétés élastiques de la couche élastomère (9a) sur la face avant de celle-ci.
  4. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée en ce que la couche de renfort (9b) textile contient des fibres de verre modifiées, des fibres de carbone et/ou des fibres synthétiques à haute résistance.
  5. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée en ce que la couche de renfort (9b) textile comporte un mat de fils dans le sens périphérique et/ou longitudinal de la bande pour presse à patin (9).
  6. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée par une épaisseur totale dans le domaine entre 5 et 10 mm, en particulier d'environ 7,5 mm.
  7. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée par une face avant structurée, en particulier munie d'évidements (9d) en forme de trous borgnes.
  8. Bande pour presse à patin selon la revendication 7, caractérisée en ce que les évidements (9d) ont des dimensions latérales et une profondeur dans le domaine entre 0,5 et 5 mm, en particulier entre 1 et 3 mm.
  9. Bande pour presse à patin selon la revendication 7 ou 8, caractérisée en ce que la surface de section ouverte de la face avant structurée occupe entre 10 et 50 %, en particulier environ 20 % de la surface totale de la face avant.
  10. Bande pour presse à patin selon l'une des revendications précédentes, caractérisée en ce que dans un essai de flexion en trois points sur une ébauche de 30 mm de largeur et 5 mm d'épaisseur, il faut appliquer une force de 17 N ou moins, en particulier 13 N ou moins, sur deux supports, placés à une distance de 100 mm l'un de l'autre pour obtenir une flexion de 15 mm, et il se produit une contrainte de flexion de 110 N/cm2 ou moins, en particulier de 90 N/cm2 ou moins.
  11. Bande pour presse à patin selon la revendication 10, caractérisée en ce que dans l'essai de flexion en trois points, il faut appliquer une force de 11 N et il se produit une contrainte de flexion de 70 N/cm2.
  12. Presse humide avec une fente de pression prolongée d'une machine à papier, à carton ou à papier de soie, comportant une bande pour presse à patin selon l'une des revendications précédentes.
  13. Calandre avec une fente de pression prolongée d'une machine à papier, à carton ou à papier de soie, comportant une bande pour presse à patin selon l'une des revendications 1 à 11.
EP01109618A 2001-04-18 2001-04-18 Bande pour presse à patin Expired - Lifetime EP1251203B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT01109618T ATE364750T1 (de) 2001-04-18 2001-04-18 Schuhpressenbelt
DE50112624T DE50112624D1 (de) 2001-04-18 2001-04-18 Schuhpressenbelt
EP01109618A EP1251203B1 (fr) 2001-04-18 2001-04-18 Bande pour presse à patin
US10/475,632 US7014734B2 (en) 2001-04-18 2002-03-20 Shoe press belt
CA002434776A CA2434776C (fr) 2001-04-18 2002-03-20 Bande de presse a patin
PCT/EP2002/003129 WO2002084020A1 (fr) 2001-04-18 2002-03-20 Bande de presse a patin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01109618A EP1251203B1 (fr) 2001-04-18 2001-04-18 Bande pour presse à patin

Publications (2)

Publication Number Publication Date
EP1251203A1 EP1251203A1 (fr) 2002-10-23
EP1251203B1 true EP1251203B1 (fr) 2007-06-13

Family

ID=8177175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01109618A Expired - Lifetime EP1251203B1 (fr) 2001-04-18 2001-04-18 Bande pour presse à patin

Country Status (6)

Country Link
US (1) US7014734B2 (fr)
EP (1) EP1251203B1 (fr)
AT (1) ATE364750T1 (fr)
CA (1) CA2434776C (fr)
DE (1) DE50112624D1 (fr)
WO (1) WO2002084020A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102004030008A1 (de) * 2004-06-22 2006-01-12 Voith Paper Patent Gmbh Breitnipkalander und Verfahren zum Satinieren einer Materialbahn
DE102005060590A1 (de) * 2005-12-17 2007-06-21 Voith Patent Gmbh Walzenmantel
AT505760B1 (de) * 2008-01-09 2009-04-15 Andritz Ag Maschf Vorrichtung und verfahren zur entwasserung einer materialbahn

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US412656A (en) * 1889-10-08 Lawrence o neill
US3685436A (en) 1971-06-01 1972-08-22 Sw Ind Inc Process for squeezing water from paper sheet
US4431045A (en) * 1982-01-27 1984-02-14 Josefsson Lars G Apparatus for pressure treatment of a moving web
US4483745A (en) * 1982-09-29 1984-11-20 Beloit Corporation Method and apparatus of sheet transfer using a nonporous smooth surfaced belt
JPS5954598U (ja) * 1982-10-01 1984-04-10 市川毛織株式会社 抄紙機の広巾ニツププレス用加圧ベルト
US4552620A (en) 1983-09-19 1985-11-12 Beloit Corporation Paper machine belt
FI850087L (fi) * 1985-01-08 1986-07-09 Valmet Oy Foerfarande och anordning samt remkomponent foer utjaemning av presstrycket i pressnypet av en pappersmaskin.
ZA859176B (en) * 1985-03-13 1986-08-27 Albany Int Corp Papermaking belt with smooth inner surface and method of making same
AU575216B2 (en) 1985-10-03 1988-07-21 Beloit Corporation A bearing blanket for an extended nip press
DE3629736A1 (de) * 1986-09-01 1988-03-03 Becker Gummiwerke Nasspresse zum entwaessern von faserstoffbahnen
EP0289477A3 (fr) 1987-04-28 1989-03-08 Valmet Paper Machinery Inc. Procédé pour le pressage à chaud d'une bande de papier et dispositif de séchage pour l'application du procédé
US4973383A (en) * 1989-08-11 1990-11-27 Beloit Corporation Bearing blanket for an extended nip press
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DE4028085C1 (fr) 1990-09-05 1992-02-27 Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De
JPH06287885A (ja) * 1991-04-15 1994-10-11 Yamauchi Corp 脱水プレス用エンドレスベルト
DE4202731C2 (de) 1992-01-31 1997-04-17 Voith Gmbh J M Preßmantel für eine Schuhpresse
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SE502960C2 (sv) * 1994-06-15 1996-02-26 Nordiskafilt Ab Albany Arrangemang för kalandrering
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JP3045975B2 (ja) 1997-04-24 2000-05-29 市川毛織株式会社 シュープレス用ベルト
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ES2210061T3 (es) * 2000-06-06 2004-07-01 THOMAS JOSEF HEIMBACH GESELLSCHAFT MIT BESCHRANKTER HAFTUNG & CO. Cinta de prensa de zapatas para maquinas papeleras.

Also Published As

Publication number Publication date
ATE364750T1 (de) 2007-07-15
EP1251203A1 (fr) 2002-10-23
DE50112624D1 (de) 2007-07-26
US7014734B2 (en) 2006-03-21
CA2434776C (fr) 2008-08-19
WO2002084020A1 (fr) 2002-10-24
US20040094282A1 (en) 2004-05-20
CA2434776A1 (fr) 2002-10-24

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