EP1766128A1 - Walzenmantel - Google Patents
WalzenmantelInfo
- Publication number
- EP1766128A1 EP1766128A1 EP05752581A EP05752581A EP1766128A1 EP 1766128 A1 EP1766128 A1 EP 1766128A1 EP 05752581 A EP05752581 A EP 05752581A EP 05752581 A EP05752581 A EP 05752581A EP 1766128 A1 EP1766128 A1 EP 1766128A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer layer
- roll shell
- flexible roll
- inner layer
- fibrous web
- 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.)
- Granted
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
-
- 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
- D21F3/029—Wet presses using special water-receiving belts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0206—Controlled deflection rolls
Definitions
- the invention relates to a flexible roll shell of a press roll for treating a paper, cardboard, tissue or another fibrous web in a machine for producing and / or finishing the same with internal support elements consisting of at least two circumferential layers.
- the roll shell is pressed by the support elements to form a press nip in the direction of a counter roll.
- the support elements In particular, at pressing pressures of more than 15 MPa, damage to the roll shell often occurs during contact with the support elements.
- the support elements have concave pressing surfaces which press the roll mantle to the cylindrical mating roll.
- the object of the invention is therefore to extend its life, especially at high compression pressures while ensuring sufficient flexibility of the roll shell.
- this object is achieved in that the radially inner layer of coating is harder than the outer layer lying outside.
- the hardness of the inner layer should be between 40 and 80, preferably between 50 and 60 Shore D and the hardness of the outer layer between 70 and 95 Shore A.
- the thickness of the inner layer should be a maximum of 4 mm and preferably between 3 and 3.7 mm.
- the thickness of the outer layer should preferably be between 2 and 3 mm. In press rolls for smoothing the fibrous web, the thickness of the outer layer is determined independently of the preferred range of the expected wear.
- Press rolls for dewatering the fibrous web often have outer grooves and / or blind holes for receiving the squeezed water. Therefore, the thickness of the outer layer should definitely be greater than the depth of the blind holes or grooves.
- the inner layer is thicker than the outer layer or if the thickness of the inner layer corresponds approximately to the thickness of the outer layer.
- At least the inner layer preferably also the outer layer consist of a plastic.
- polyurethane is suitable.
- the two layers are poured over different casting heads largely simultaneously.
- the second layer takes place only after the curing of the first layer and possibly the addition of an adhesion promoter between the layers.
- the inner layer should include reinforcing elements, preferably in the form of a woven fabric and / or netting. A sufficient strength with at the same time acceptable restriction of the homogeneity of the inner layer results when the proportion of the reinforcing elements in the volume of the inner layer is between 5 and 30%.
- the outer layer should have no reinforcing elements to ensure sufficient flexibility of the roll mantle.
- the modulus of elasticity of the inner layer is greater than that of the outer layer.
- the smallest possible difference in the modulus of elasticity between the plastic of the inner layer and the reinforcing elements reduces the shear forces at the interfaces between them and thus prolongs the service life.
- the hardness of the outer layer is between 85 and 90 Shore A.
- the roughness of the surface of the outer layer should be less than 2 Ji microns.
- the hardness of the outer layer is between 90 and 95 Shore A.
- Figure 5 a pressing arrangement.
- FIG. 5 is formed by the press nip formed by a press roll and a cylindrical mating roll 4 press nip the fibrous web 1 together with a
- Dewatering belt 2 led to receive the squeezed water. At this point
- Dewatering device of a paper machine is the press nip extended in the interest of intensive, but gentle drainage extended.
- the flexible roll shell 3 of the press roll passes over a support element 5 with concave pressing surface.
- the support element 5 is supported on the support 6 of the press roll and presses the roll shell 3 to the counter roll 4 out.
- the support element 5 is hydrostatically lubricated and has oil pressure pockets.
- the support element 5 is hydrostatically lubricated and has oil pressure pockets.
- the roll shell 3 is pressed and damaged in the oil pressure pockets of the support element 5 the roll shell 3 a special construction.
- the roll shell 3 consists, as can be seen in FIGS. 1 to 4, of two circumferential layers of polyurethane, a radially inner layer 7 and an outer outer layer 8.
- the inner layer 7 is harder than the outer layer 8 is formed.
- the inner layer 7 includes reinforcing elements 9 in the form of a thread scrim consisting of circumferentially extending and transverse threads.
- the volume of the threads is about 20 to 30% of the volume of the inner layer 7.
- the inner layer 7 has a hardness between 50 and 60 Shore D and a thickness between 3 and 3.7 mm.
- the thickness of the outer layer 8 is between 2 and 3 mm, the inner layer 7 being thicker than the outer layer 8.
- the roll shell 3 shown in FIG. 1 is used for press rolls for smoothing the fibrous web 1, which is why the roughness of the surface which comes into contact with the fibrous web 1 is less than 2 micrometers. Since in the smoothing generally the fibrous web 1 is guided solely by the press nip and the counter-roller 4 is heated, the roll shell 3 must be protected from direct contact with the counter-roller 4. Therefore, the outer diameter of the outer layer 8 decreases at the edge of the press roll outside the contact area with the fibrous web 1. This can be seen so far that the outer layer 8 to the end of the press roll completely disappears.
- the hardness of the outer layer 8 is between 85 and 90 Shore A.
- the press jackets 3 shown in FIGS. 2 to 4 are used for press rolls for dewatering the fibrous web 1.
- these roll coats 3 have outside blind holes 11 and circumferentially extending grooves 10th
- the depth of these blind holes 11 and grooves 10 is less than the thickness of the outer layer 8 so as not to weaken the inner layer 7.
- the hardness of the outer layer is between 90 and 95 Shore A.
- the modulus of elasticity of the inner layer 7 is higher than that of the outer layer 8.
Landscapes
- Paper (AREA)
- Soil Working Implements (AREA)
- General Preparation And Processing Of Foods (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004033751A DE102004033751A1 (de) | 2004-07-13 | 2004-07-13 | Walzenmantel |
PCT/EP2005/052550 WO2006005651A1 (de) | 2004-07-13 | 2005-06-03 | Walzenmantel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1766128A1 true EP1766128A1 (de) | 2007-03-28 |
EP1766128B1 EP1766128B1 (de) | 2008-03-12 |
Family
ID=35457625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05752581A Not-in-force EP1766128B1 (de) | 2004-07-13 | 2005-06-03 | Walzenmantel |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070281843A1 (de) |
EP (1) | EP1766128B1 (de) |
JP (1) | JP4858992B2 (de) |
AT (1) | ATE389056T1 (de) |
DE (2) | DE102004033751A1 (de) |
WO (1) | WO2006005651A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITFI20040202A1 (it) * | 2004-09-30 | 2004-12-30 | Perini Fabio Spa | Camicia intercambiabile per rulli goffratori o simili, metodo per la sua realizzazione, e rullo comprendente detta camicia |
JP3946221B2 (ja) * | 2004-11-30 | 2007-07-18 | ヤマウチ株式会社 | 製紙用弾性ベルト |
GB2455175B (en) * | 2008-10-13 | 2012-12-26 | Richard Hough Ltd | Improvements in or relating to rolls |
WO2014191188A1 (de) * | 2013-05-27 | 2014-12-04 | Voith Patent Gmbh | Pressmantel für eine schuhpresswalze |
EP3913132A1 (de) * | 2020-05-20 | 2021-11-24 | Valmet Technologies Oy | Band für eine bandwalze und dessen verwendung |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE754909A (fr) * | 1969-08-14 | 1971-01-18 | Kanegafuchi Spinning Co Ltd | Cuir artificiel et procede et appareil pour sa fabrication |
US3600779A (en) * | 1969-12-12 | 1971-08-24 | Allis Chalmers Mfg Co | Press roll with tapered grooves |
JPS57118898A (en) * | 1981-01-14 | 1982-07-23 | Kinyoushiya:Kk | Roll for press |
BR8507290A (pt) * | 1985-10-03 | 1987-10-27 | Beloit Corp | Uma esteira de apoio para uma prensa de mordedura ampliada |
DE3715153A1 (de) * | 1987-05-07 | 1988-12-01 | Voith Gmbh J M | Verstaerkter pressmantel fuer eine presseinrichtung zur behandlung bahnfoermigen gutes, wie z. b. von papierbahnen, sowie verfahren und vorrichtung zu seiner herstellung |
FI890953A (fi) * | 1989-02-28 | 1990-08-29 | Valmet Paper Machinery Inc | Vals eller valsbelaeggning i cellulosamaskin, pappersmaskin eller efterbehandlingsmaskin foer papper och foerfarande foer framstaellning av denna samt anvaendning av denna. |
DE4411620C2 (de) * | 1994-04-02 | 2001-05-31 | Voith Sulzer Papiermasch Gmbh | Preßmantel und Verfahren zur Herstellung eines Preßmantels |
DE4411621A1 (de) * | 1994-04-02 | 1995-10-05 | Voith Sulzer Papiermasch Gmbh | Preßmantel |
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 |
DE4443598C2 (de) * | 1994-12-07 | 2000-05-25 | Voith Sulzer Papiermasch Gmbh | Verfahren zur Herstellung eines Preßmantels |
ATE186277T1 (de) * | 1995-06-28 | 1999-11-15 | Voith Sulzer Papiertech Patent | Verfahren und vorrichtung zum kontinuierlichen aufwickeln einer laufenden bahn |
US5777650A (en) * | 1996-11-06 | 1998-07-07 | Tektronix, Inc. | Pressure roller |
DE19654197A1 (de) * | 1996-12-23 | 1998-06-25 | Voith Sulzer Papiermasch Gmbh | Maschine zur Herstellung einer Faserstoffbahn |
DE19716887A1 (de) * | 1997-04-22 | 1998-10-29 | Voith Sulzer Papiermasch Gmbh | Wickelmaschine |
DE19860099A1 (de) * | 1998-12-23 | 2000-07-06 | Voith Sulzer Papiertech Patent | Preßmantel und Verfahren zur Herstellung |
JP3698984B2 (ja) * | 2000-11-10 | 2005-09-21 | ヤマウチ株式会社 | シュープレス用ベルト |
SE518033C2 (sv) * | 2000-12-18 | 2002-08-20 | Tetra Laval Holdings & Finance | Sätt och anordning vid framställning av ett förpackningsmaterial |
DE10151485A1 (de) * | 2001-10-18 | 2003-05-08 | Schaefer Kg Gummiwalzenfabrik | Verfahren zur Herstellung eines Preßmantels einer Schuhpresse oder eines Preßwalzenbezuges |
JP3825435B2 (ja) * | 2003-09-04 | 2006-09-27 | ヤマウチ株式会社 | プレスベルトおよびシュープレスロール |
-
2004
- 2004-07-13 DE DE102004033751A patent/DE102004033751A1/de not_active Withdrawn
-
2005
- 2005-06-03 DE DE502005003221T patent/DE502005003221D1/de active Active
- 2005-06-03 AT AT05752581T patent/ATE389056T1/de not_active IP Right Cessation
- 2005-06-03 JP JP2007520793A patent/JP4858992B2/ja not_active Expired - Fee Related
- 2005-06-03 US US11/571,875 patent/US20070281843A1/en not_active Abandoned
- 2005-06-03 WO PCT/EP2005/052550 patent/WO2006005651A1/de active IP Right Grant
- 2005-06-03 EP EP05752581A patent/EP1766128B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2006005651A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006005651A1 (de) | 2006-01-19 |
DE502005003221D1 (de) | 2008-04-24 |
ATE389056T1 (de) | 2008-03-15 |
JP2008506856A (ja) | 2008-03-06 |
JP4858992B2 (ja) | 2012-01-18 |
EP1766128B1 (de) | 2008-03-12 |
US20070281843A1 (en) | 2007-12-06 |
DE102004033751A1 (de) | 2006-02-02 |
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