WO2002084020A1 - Schuhpressenbelt - Google Patents
Schuhpressenbelt Download PDFInfo
- Publication number
- WO2002084020A1 WO2002084020A1 PCT/EP2002/003129 EP0203129W WO02084020A1 WO 2002084020 A1 WO2002084020 A1 WO 2002084020A1 EP 0203129 W EP0203129 W EP 0203129W WO 02084020 A1 WO02084020 A1 WO 02084020A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- press belt
- shoe press
- belt according
- shoe
- press
- Prior art date
Links
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 a press cover, is used in paper, cardboard or
- Tissue machines are used for extensive drainage of the respective product (wet press) or for finishing the surface (calender).
- the corresponding wet presses or calenders have an elongated press nip (“Preßmp”) and are therefore also referred to as shoe presses.
- Preßmp elongated press nip
- the shoe press belt or the press jacket on its back comes into sliding contact with the actual press shoe and must therefore have excellent sliding properties on this side.
- the nip press belt On its front side (upper side) the nip press belt is (indirectly and via this with the jeweili ⁇ gene product) with a Entiganungsfllz or - in a calender - directly with the product in contact, which is printed on and off by a rotating roller.
- Shoe press belts are known in various designs from the prior art.
- EP 0 420 372 BI describes a generic shoe press belt with a base fabric in the form of an endless loop with smooth polymer resin coating on the inside and outside, which makes the fabric impermeable to liquids and gives it a uniform thickness.
- Polyurethane is mentioned here as the polymer resin that forms the elastomer.
- the tape has a smooth, flexible, liquid-impermeable tape layer on the back and a carrier web and a fiber layer attached to it on the front.
- WO 95/16820 describes a paper machine fabric - in particular a shoe press belt - in which a carrier fabric is provided with a polymer coating, which is a tixotropic material (for example aramite or silica glass). Polyurethane is also specifically mentioned here as the base material.
- a carrier fabric is provided with a polymer coating, which is a tixotropic material (for example aramite or silica glass).
- Polyurethane is also specifically mentioned here as the base material.
- the object of the invention is based on a shoe press belt with further improved usage properties, in particular optimized elasticity properties and advantageous multidimensional curvature behavior, in order to achieve smooth machine operation with low physical performance and a high total running time.
- the invention includes the basic idea of forming the shoe press belt with an elastomer layer made of a very soft and supple (and also sufficiently inexpensive) elastomer, as a result of which an unusually low bending moment and a low overall elastic modulus can be imparted to it.
- the combination of these advantageously set parameters results in the achievement of the above-mentioned performance properties which are improved in several aspects.
- the soft rubber elastomer layer of the belt comprises a highly abrasion-resistant rubber compound made of several rubber or silicone rubber compositions. These compositions are mixed homogeneously with one another in the compound.
- the hardness of the soft rubber layer can be adjusted according to the needs of the respective application, that is to say according to the customer's requirements.
- the hardness is preferably in the range between 20 and 50 P + J, in an embodiment currently regarded as the standard variant it is approximately 35 P + J.
- this textile reinforcement component is preferably designed as a scrim in the circumferential and / or longitudinal direction of the belt.
- Modified glass fibers or carbon fibers can be used in particular as reinforcing material.
- polyester and polyamide copolymers or aramide are particularly important.
- combinations or mixtures of these materials can also be used expediently.
- the reinforcement layer is preferably incorporated near the back in the elastomer-textile composite, on the one hand so as not to impair the rubber-elastic behavior on the front of the belt and on the other hand as little bending moment as possible on the curve of the shoe and on the belten and thus overall the intended optimization of the multi-dimensional curvature behavior to ensure.
- the total thickness of the belt (depending on the elasticity and strength properties of the individual materials) is chosen in particular in the range between 5 and 10 mm, by default around 7.5 mm.
- the front of the belt can be made smooth, which will be particularly useful when used in a calender. However, it can also have a pronounced structure, especially for use in a wet press.
- the open cross-sectional area of the structured front i.e. the
- Total area of the recesses expediently 10 to 50% of the total front area of the belt.
- 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 expediently in the same range.
- the shoe press belt has a significantly reduced rigidity or, compared to conventional belts, bending stress - converted to the cross section.
- the force required to achieve a deflection of 15 mm in a three-point bending test on a 30 mm wide and 5 mm thick test specimen on two supports arranged 100 mm apart is 17 N or less, in particular 13 N or less, and that 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.
- FIG. 1 shows a schematic longitudinal section of the wet press section of a paper machine
- Fig. 2 is a simplified cross-sectional view of a
- FIG. 1 shows a detail of the press nip of a wet press 1 of a paper machine with an extended press nip (shoe press).
- a press roll 5 is arranged opposite a press shoe 3, and a paper web 13 is dewatered in the press nip 7 formed between the two press nips 9 sliding on the press shoe 3, a press felt 11 and the surface of the press roll 5.
- the shoe press belt 9 on the one hand, must have an elasticity and flexibility which ensures that it bears as well as possible on the curved surface of the press shoe 3 and that uniform pressure is exerted on the paper web 13 (via the press felt 11). On the other hand, it must be made sufficiently stable to withstand the high permanent stress (tensile, compressive and vibration stress) in the press nip 7 over an economically acceptable service life.
- the hardness of the soft rubber in the standard version is 35 P + J, but can be varied within wide limits according to customer requirements by appropriate variation and mixing of rubber compositions.
- the soft rubber can be used continuously at temperatures above 100 ° C and withstands temperature peaks of up to approx. 130 ° C.
- FIG. 2 A shoe press belt 9 suitable for fulfilling these requirements is shown in cross section in FIG. 2 (schematically).
- This shoe press belt 9 is based on a soft rubber band 9a, near the rear side of which a textile reinforcement layer 9b is provided with a scrim made 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 area of the belt.
- the embodiment of the invention is not limited to this example, but is also possible in a large number of modifications — both with regard to the materials of the individual components and with regard to the geometric dimensions.
Landscapes
- Paper (AREA)
- Polarising Elements (AREA)
- Valve Device For Special Equipments (AREA)
- Glass Compositions (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/475,632 US7014734B2 (en) | 2001-04-18 | 2002-03-20 | Shoe press belt |
CA002434776A CA2434776C (en) | 2001-04-18 | 2002-03-20 | Nip press belt |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01109618.7 | 2001-04-18 | ||
EP01109618A EP1251203B1 (de) | 2001-04-18 | 2001-04-18 | Schuhpressenbelt |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002084020A1 true WO2002084020A1 (de) | 2002-10-24 |
Family
ID=8177175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/003129 WO2002084020A1 (de) | 2001-04-18 | 2002-03-20 | Schuhpressenbelt |
Country Status (6)
Country | Link |
---|---|
US (1) | US7014734B2 (de) |
EP (1) | EP1251203B1 (de) |
AT (1) | ATE364750T1 (de) |
CA (1) | CA2434776C (de) |
DE (1) | DE50112624D1 (de) |
WO (1) | WO2002084020A1 (de) |
Families Citing this family (5)
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 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4483745A (en) * | 1982-09-29 | 1984-11-20 | Beloit Corporation | Method and apparatus of sheet transfer using a nonporous smooth surfaced belt |
EP0258759A1 (de) * | 1986-09-01 | 1988-03-09 | Gummiwerke Becker AG | Nasspresse zum Entwässern von Faserstoffbahnen |
EP0420372B1 (de) * | 1989-09-28 | 1994-04-27 | Albany International Corp. | Band für eine Presse mit verlängerter Presszone |
EP0939162A2 (de) * | 1998-02-26 | 1999-09-01 | Ichikawa Co.,Ltd. | Band für eine Schuhpresse und Verfahren zu seiner Herstellung |
Family Cites Families (23)
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 |
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 |
US4908103A (en) | 1985-10-03 | 1990-03-13 | Beloit Corporation | Bearing blanket for an extended nip press having laminates of different hardnesses |
EP0289477A3 (de) * | 1987-04-28 | 1989-03-08 | Valmet Paper Machinery Inc. | Verfahren zur Heisspressung von Papierbahnen und Trocknungsanlage zur Durchführung des Verfahrens |
US4973383A (en) * | 1989-08-11 | 1990-11-27 | Beloit Corporation | Bearing blanket for an extended nip press |
DE4028085C1 (de) | 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 |
GB2284772B (en) | 1993-12-15 | 1997-11-26 | Scapa Group Plc | Papermachine clothing |
SE502960C2 (sv) * | 1994-06-15 | 1996-02-26 | Nordiskafilt Ab Albany | Arrangemang för kalandrering |
DE4438354A1 (de) | 1994-10-27 | 1996-05-02 | Voith Sulzer Papiermasch Gmbh | Preßmantel und Verfahren zur Herstellung eines Preßmantels |
DE19654197A1 (de) * | 1996-12-23 | 1998-06-25 | Voith Sulzer Papiermasch Gmbh | Maschine zur Herstellung einer Faserstoffbahn |
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 |
US6168733B1 (en) | 1998-08-31 | 2001-01-02 | Eastman Chemical Company | Method for forming discrete pellets from viscous materials |
JP3488397B2 (ja) * | 1999-04-26 | 2004-01-19 | 市川毛織株式会社 | シュープレス用ベルト及びその製造方法 |
JP2001089989A (ja) | 1999-09-20 | 2001-04-03 | Ichikawa Woolen Textile Co Ltd | 湿紙搬送ベルト及びその製造方法 |
DE29923825U1 (de) | 1999-11-24 | 2001-04-05 | Schaefer Kg Gummiwalzenfabrik | Preßmantel, Preßband oder Walzenbeschichtung |
EP1162307B1 (de) * | 2000-06-06 | 2003-11-12 | Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. | Schuhpressenband für Papiermaschinen |
-
2001
- 2001-04-18 DE DE50112624T patent/DE50112624D1/de not_active Expired - Lifetime
- 2001-04-18 EP EP01109618A patent/EP1251203B1/de not_active Expired - Lifetime
- 2001-04-18 AT AT01109618T patent/ATE364750T1/de active
-
2002
- 2002-03-20 US US10/475,632 patent/US7014734B2/en not_active Expired - Lifetime
- 2002-03-20 WO PCT/EP2002/003129 patent/WO2002084020A1/de not_active Application Discontinuation
- 2002-03-20 CA CA002434776A patent/CA2434776C/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4483745A (en) * | 1982-09-29 | 1984-11-20 | Beloit Corporation | Method and apparatus of sheet transfer using a nonporous smooth surfaced belt |
EP0258759A1 (de) * | 1986-09-01 | 1988-03-09 | Gummiwerke Becker AG | Nasspresse zum Entwässern von Faserstoffbahnen |
EP0420372B1 (de) * | 1989-09-28 | 1994-04-27 | Albany International Corp. | Band für eine Presse mit verlängerter Presszone |
EP0939162A2 (de) * | 1998-02-26 | 1999-09-01 | Ichikawa Co.,Ltd. | Band für eine Schuhpresse und Verfahren zu seiner Herstellung |
Also Published As
Publication number | Publication date |
---|---|
US7014734B2 (en) | 2006-03-21 |
DE50112624D1 (de) | 2007-07-26 |
EP1251203A1 (de) | 2002-10-23 |
EP1251203B1 (de) | 2007-06-13 |
CA2434776A1 (en) | 2002-10-24 |
ATE364750T1 (de) | 2007-07-15 |
US20040094282A1 (en) | 2004-05-20 |
CA2434776C (en) | 2008-08-19 |
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