EP1176110A2 - Procédé et noyau d'enroulement pour éviter les erreurs d'enroulement dans une bande de matériau - Google Patents

Procédé et noyau d'enroulement pour éviter les erreurs d'enroulement dans une bande de matériau Download PDF

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Publication number
EP1176110A2
EP1176110A2 EP01108808A EP01108808A EP1176110A2 EP 1176110 A2 EP1176110 A2 EP 1176110A2 EP 01108808 A EP01108808 A EP 01108808A EP 01108808 A EP01108808 A EP 01108808A EP 1176110 A2 EP1176110 A2 EP 1176110A2
Authority
EP
European Patent Office
Prior art keywords
winding core
rings
winding
coating
groove
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
Application number
EP01108808A
Other languages
German (de)
English (en)
Other versions
EP1176110B1 (fr
EP1176110A3 (fr
Inventor
Robert Wolf
Ulrich Begemann
Walter Kaipf
Mattias Wohlfahrt
Jörg Dr. Maurer
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 Patent GmbH
Original Assignee
Voith Paper Patent GmbH
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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1176110A2 publication Critical patent/EP1176110A2/fr
Publication of EP1176110A3 publication Critical patent/EP1176110A3/fr
Application granted granted Critical
Publication of EP1176110B1 publication Critical patent/EP1176110B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/514—Elastic elements

Definitions

  • the invention relates to a method for avoiding winding errors, in particular of glossy spots, in a material web, especially a paper or Cardboard web, according to the preamble of claim 1 and a winding core ("Drum") for one for the continuous winding of a material web, in particular a paper or cardboard web, serving winding machine according to one the preambles of claims 6 and 21.
  • a winding core for one for the continuous winding of a material web, in particular a paper or cardboard web, serving winding machine according to one the preambles of claims 6 and 21.
  • a winding machine of the type mentioned here is from, for example PCT publication WO 98/52858 A1 (PR10706 WO) is well known to the applicant and is used in particular at the end of machines used for manufacturing of material webs, such as paper or cardboard webs, or for Refining material webs, such as paper webs, serve.
  • a winding core for example a reel for use in a winding machine or a winding tube for use in a slitter winder, is in the German utility model DE 296 12 786 U1 (PR10331 DEG) to the applicant.
  • This winding core preferably consists of a hollow cylindrical winding core body and attached at both ends Usually, trunnions with which it rests during use in bearings are movably supported on, for example, horizontal rails.
  • the winding process has both in the material web production and in the Material web refinement is of great importance because sometimes there is a risk is that a previously perfectly manufactured web of material during winding is so affected by winding errors that parts of a manufactured Winding roll are not for sale.
  • the best known winding errors are currently the so-called gloss spots, folds or bursts.
  • the emerging Winding errors are generally greater the faster the winding machines are operated (size 1,500 to 2,500 m / min) and the larger the manufactured Diameter (range 2.5 to 4.5 m) and finished weights (Of the order of up to 135 t) of the winding rolls ("finished rolls").
  • the winding roll was deliberately made with a possible shiny spots Wound soft point (hanging edges) or the winding roll wound harder in the core (hanging edges), causing problems with the flatness of the material web came.
  • the winding core was given various crowns: For example, a crowning of 2.4 mm did not show any Glossy spots, however, wrinkles formed in the core of the winding roll; with a crown of 1.1 mm glossy spots could not be avoided, moreover there were problems with changing.
  • the control of the profiles also contributed no problem solving for: A normal profile (hanging edges) resulted in a lower winding hardness at the edge, a flat profile, created by calenders and / or line, insignificantly reduced the risk of shiny spots.
  • This object is achieved according to the invention in a method of the type mentioned at the outset solved in that at least the material web layer that is initially on the winding core ("empty reel") is wound up from the winding core the outer peripheral surface is decoupled as much as possible.
  • the Material web position is preferably substantially in the axial direction of the Deliberately decoupled winding core.
  • the material layer selectively decoupled in the edge areas of the winding core on both sides is, and preferably in a respective width of up to a third the web width, preferably up to a quarter of the web width.
  • the material web layer is opened by means of at least one coating applied to the winding core, which has a high elasticity Has flexibility in the axial direction of the winding core, decoupled.
  • the height Elasticity of the coating ensures axial elasticity.
  • the winding core body in the bilateral edge areas has at least one coating on its outer peripheral surface, which is provided with at least one groove, preferably with several grooves.
  • This at least one groove reduces the axial rigidity of the applied Coating such that an axial elasticity between the winding core and The initial material web layers that ultimately result in an axial displacement the initial material web layers against each other despite deflection of the winding core largely prevented due to high weight forces. Consequently there are more or less no "axial scratches” that are considered undesirable Shine spots appear.
  • the at least one groove can, for example as at least one spiral groove or at least two grooves with parallel, be perpendicular to the axial direction of the winding core.
  • the respective coating has a coating thickness that a Value of up to 100 mm, preferably up to 50 mm.
  • the reference suitably has one Reference thickness of 2 to 10 mm, preferably from 5 to 8 mm, the fixation the multiplicity of rings takes place by means of at least one clamping ring, a multiplicity on rivets, at least one bond or at least one weld.
  • the at least one groove of the respective Coating inclined at an angle to the adjacent bearing journal.
  • the angle advantageously takes a value between 0.01 ° and 10 °, preferably between 2 ° and 5 °.
  • the coating has A high degree of flexibility over a substantial part of their coating thickness on, corresponding to a rubber hardness of 20 to 200 P&J, preferably 50 up to 150 P&J. This high flexibility in turn promotes the one already described axial compliance between the winding core and the initial Web documents.
  • the groove of the coating which is essential to the invention, is within the desired range axial elasticity in a preferred embodiment a groove width of 1 up to 4 mm, preferably from 2 to 3 mm, and a groove depth of 2 to 15 mm, preferably from 5 to 12 mm.
  • the one between two adjacent grooves Web has a web width of 2 to 5 times the value, preferably of 3 to 4.5 times the value of the two adjacent groove widths.
  • the groove has two side walls, either parallel or in run essentially parallel or conical or concave and / or convex to one another. Furthermore, the groove has a groove base, which is either by means of at least a curvature or by means of at least one chamfer in the two adjacent ones Sidewalls merges. Both the shape of the side walls and the shape of the Groove bases significantly influence the axial compliance of the coating. The shapes mentioned support the axial elasticity in an excellent way Wise.
  • this task with a winding core of the type mentioned solved according to the invention in that the winding core body in the two-sided Edge areas of its outer peripheral surface each have at least one coating has, which consists of a plurality of rings arranged next to each other or There are hoses which are axially fixed in the axial direction of the winding core. Also these rings or hoses reduce the axial rigidity of the applied Coating such that an axial elasticity between the winding core and The initial material web layers that ultimately result in an axial displacement the initial material web layers against each other despite deflection of the winding core largely prevented due to high weight forces. Consequently there are more or less no "axial scratches" that are considered undesirable Shine spots appear.
  • the large number of rings or the large number of hoses are fixed in general implementation by means of at least one clamping ring, a variety of Rivets, at least one bond or at least one weld, as this Types include the known and proven prior art.
  • the respective coating advantageously has a coating width that have a value of up to a third of the web width, preferably up to a quarter of the web width.
  • the division of the multitude of grooves or rings or tubes in the coating can be diverse: it can vary across the width of the respective coating be constant across the width of the respective coating be different, it can vary across the width of the respective coating be sectioned and the sectioned divisions different values assume, the sectioned divisions in the outer area of the respective coating of the winding core body can assume smaller values than in the interior.
  • the possible configurations of the divisions enable an optimal one Adaptation of the axial compliance of the coating to the respective one Needed.
  • the winding roll 1 shown in a schematic form in FIG. 1 consists of a hollow cylindrical winding core 2 and material web layers 3a of a material web 3, preferably paper or cardboard webs, wound thereon, only sketchily and partially shown.
  • the winding core 2 in turn consists of a winding core body 4 and attached to both ends, only sketchily and partially shown bearing journal 5.
  • the winding core body 4 consists of a metallic material, for example steel; however, the use of fiber composite materials alone or in conjunction with other materials, for example steel, is also conceivable.
  • the winding core 2 can also, as in the already cited German utility model DE 296 12 786 U1, be designed: winding core body 4 and a cover having its outer surface with high flexibility.
  • the present invention is not limited to a winding core with at least one coating in each of the edge regions of its outer peripheral surface on both sides, the winding core can also have a coating, for example, made over its entire length, in particular also in the middle region Have rubber or a rubber-elastic plastic.
  • the winding roll 1 and the winding core 2 bend slightly during operation, namely they will sag somewhat downwards under the weight in the middle and, due to the pressure forces, will sag with their end sections press harder against the carrier drum, not shown, than in the middle section.
  • This position of the winding core 2 which deviates from the ideal line, is indicated in dash-dotted lines in FIG.
  • the winding core body 4 each has at least one coating 7 in the edge regions 6 on both sides of its outer peripheral surface A, which is provided with a plurality of grooves 8.
  • the edge regions 6 on both sides are each represented as a surface which is surrounded by a dash-dotted line.
  • FIG. 2 shows a partial section of a winding core 2 with a coating 7 according to the invention, applied in the winding core body 4, represented by a circle in FIG. 1.
  • the abstracted coating 7 consists of a rubber or a rubber-elastic plastic, preferably of polyurethane.
  • the coating has a coating thickness D which assumes a value of up to 100 mm, preferably of up to 50 mm. Both the coating width B and the coating thickness D depend on the material of the selected coating 7 and are ultimately determined by it and the force relationships prevailing in the winding roll.
  • the coating 7 also has a high degree of flexibility, corresponding to a rubber hardness of 20 to 200 P&J, preferably 50 to 150 P&J, since this high degree of flexibility in turn promotes the axial elasticity already described between the winding core and the initial material web layers.
  • the grooves 8 of the coating 7 have a groove width R B of 1 to 4 mm, preferably 2 to 3 mm, and a groove depth R T of 2 to 15 mm, preferably 5 to 12 mm, within the desired axial elasticity.
  • the web 9 attached between two adjacent grooves 8 has a web width S B of 2 to 5 times the value, preferably 3 to 4.5 times the value, of the two adjacent groove widths R B.
  • each groove 8 has two side walls 10 which either run parallel or essentially parallel or conical or concave and / or convex to one another.
  • each groove 8 has a groove base 11 which merges into the two adjacent side walls 10 either by means of at least one curvature or by means of at least one chamfer.
  • the division T of the plurality of grooves 8 in the coating 7 can also be varied: in FIG. 2 it is constant over the width B of the respective coating 7. On the one hand, however, it can also be different across the width B of the respective coating 7, on the other hand, it can also be sectioned across the width B of the respective coating 7 and the sectioned divisions T can assume different values, the sectioned divisions T being in the outer region of the respective one Coating 7 of the winding core 2 can assume smaller values than in the interior.
  • the possible configurations of the divisions T enable the axial compliance of the coating 7 to be optimally adapted to the respective need.
  • FIG. 3 shows a partial section of a winding core 2 with a coating 7 according to the invention applied in the winding core body 4 according to a second embodiment.
  • the schematically represented coating 7 consists of a multiplicity of stepped rings 12 which have a cover 14 made of a rubber or a rubber-elastic plastic on the cylinder surfaces 13 and which are fixed in the axial direction AR, represented by a double arrow, of the winding core 2.
  • the shape of the stepped rings 12 is not limited to that of the shape shown; rather, they can have any shape adapted to the respective application.
  • the rings 12 have a reference thickness B D of 2 to 10 mm, preferably 5 to 8 mm.
  • the rings 12 are axially fixed by means of at least one known clamping ring 15 which is part of the prior art.
  • the axial fixing can also be carried out by means of a large number of rivets, at least one adhesive bond or at least one weld, the type of fixation not being based on the types mentioned limited.
  • FIG. 4 shows a partial section of a winding core 2 with a coating 7 according to the invention, applied in the winding core body 4, according to a second embodiment.
  • the schematically represented coating 7 consists of a multiplicity of rings 12, at least every second ring 12 'having a cover 14 made of a rubber or a rubber-elastic plastic on its cylindrical surface 13 and with all the rings 12 and 12' in the axial direction AR, represented by a double arrow, the winding core 2 are fixed by means of a schematic clamping ring 15.
  • FIG. 5 also shows a partial section of a winding core 2 with the inventive in the winding core body 4 applied coating 7 according to another Embodiment.
  • the coating 7 consists of a plurality of side by side Hoses 16 with a preferably rectangular contour, with an incompressible Liquid 17, preferably oil or water, are filled.
  • the hoses 16 are in their mutual contact surfaces 18 by means of stabilizers introduced 19, for example sheet metal and / or plastic rings, reinforced.
  • the touch surfaces 18 can also be just alignment surfaces, wherein there is a gap or a groove 8 between each of the tubes 16.
  • FIGS. 6a and 6b show, in two mutually corresponding sections, a winding core 2 with a coating 7 according to the invention applied in the winding core body 4.
  • the coating 7 consists of a multiplicity of two coaxially attached rings 12 and 12 ', which are connected to one another by means of at least one web 22 (double-T profile).
  • the resulting cross-sectional profile does not have to be of a symmetrical contour; rather, it can be adapted to its demands.
  • the web 22 of the rings 12 and 12 ' as can be seen in FIG. 6b, is provided with a large number of perforations 23 (openings), preferably in a circular contour. However, other perforations that are optimal in terms of strength theory can also be realized.
  • the outer rings 12 have smaller ring widths b than the inner rings 12 ', whereby grooves 8 are formed, which in turn promote the axial displacement.
  • FIGS. 7a and 7b each show a partial section of a winding core 2 with a coating 7 according to the invention applied in the winding core body 4.
  • the coating 7 consists of a multiplicity of two coaxially attached rings 12 and 12 ', in the spacing area 24 of which at least one resilient part 25 is introduced.
  • several resilient parts 25, which have an essentially truncated pyramid-like shape, are introduced in the spacing area 24; however, the resilient parts 25 can also have other shapes that serve the types of stress sufficiently.
  • the outer rings 12 have smaller ring widths b than the inner rings 12 ', as a result of which grooves 8 are formed, which in turn promote the axial displaceability.
  • FIG. 8 shows a partial section of a winding core 2 with a coating 7 according to the invention, applied in the winding core body 4, represented by a circle in FIG. 1.
  • the plurality of grooves 8 of the coating 7 is inclined at an angle ⁇ to the adjacent bearing journal 5, which is only indicated schematically.
  • the angle ⁇ assumes a value between 0.01 ° and 10 °, preferably between 2 ° and 5 °, in order thereby to support the elastic flexibility of the coating 7 in the axial direction AR (arrow) of the winding core 2.
  • the individual grooves can also assume different angles ⁇ which lie in the range mentioned.
  • FIGS. 9a and 9b also show a winding core 2 with a coating 7 according to the invention, applied in the winding core body 4, in two mutually corresponding sections.
  • the coating 7 consists of a multiplicity of rings 12, each having a recess 26 into which a feather key 27, which is mounted in a feather key groove 28 provided in the winding core body 4, is inserted.
  • the unit on rings 12 is acted upon on both sides in FIG. 9a by a reset element 29, preferably a spring.
  • FIG. 9b shows FIG. 9a according to the section line AA.
  • FIGS. 10 and 11 also show further partial sections of a winding core 2 inventive coating 7 applied in the winding core body 4 according to each of a further embodiment.
  • the coating 7 in FIG. 11 consists of a large number of outer races 32, each of which is supported by means of an O-ring 30, preferably made of one of the materials already mentioned (rubber or rubber-elastic plastic), on a bearing ring 31 attached to the winding core body 4 are.
  • each race 32 is supported by means of two O-rings 30 on the bearing rings 31 attached to the winding core body 4.
  • the O-rings 30 are supported by means of bearing shells 33 in the bearing rings 31 and in the races 32, the bearing shells 33 having a symmetrical or asymmetrical contour.
  • the bearing shells 33 have the same or larger radii than the inserted O-rings 30, which in turn promotes the axial displaceability.
  • the bearing rings 31 and the races 32 can have different ring widths b, which creates grooves 8, which in turn promote the axial displaceability.
  • the plurality of rings 12 and 12 ' are fixed. or on hoses 16 by means of at least one clamping ring 15. However, it can also by means of a large number of rivets, at least one bond or at least a weld.
  • All coatings 7 in FIGS. 2 to 11 have a coating width B. on, which is a value of up to a third of the web width, preferably of up to a quarter of the web width.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
  • Paper (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
EP01108808A 2000-07-28 2001-04-07 Procédé et noyau d'enroulement pour éviter les erreurs d'enroulement dans une bande de matériau Expired - Lifetime EP1176110B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10036951A DE10036951A1 (de) 2000-07-28 2000-07-28 Verfahren und Wickelkern zur Vermeidung von Wickelfehlern in einer Materialbahn
DE10036951 2000-07-28

Publications (3)

Publication Number Publication Date
EP1176110A2 true EP1176110A2 (fr) 2002-01-30
EP1176110A3 EP1176110A3 (fr) 2003-02-12
EP1176110B1 EP1176110B1 (fr) 2006-01-11

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EP01108808A Expired - Lifetime EP1176110B1 (fr) 2000-07-28 2001-04-07 Procédé et noyau d'enroulement pour éviter les erreurs d'enroulement dans une bande de matériau

Country Status (3)

Country Link
EP (1) EP1176110B1 (fr)
AT (1) ATE315533T1 (fr)
DE (2) DE10036951A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2336066A3 (fr) * 2009-12-16 2011-10-19 Acino AG Bobine destinée à l'enroulement d'une bande de feuille revêtue
FR3009292A1 (fr) * 2013-07-30 2015-02-06 Hegotech Mandrin presentant une paroi externe deformable radialement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10104195A1 (de) 2001-01-31 2002-08-14 Voith Paper Patent Gmbh Walze zum Aufwickeln einer Materialbahn
DE10131983A1 (de) * 2001-07-02 2003-01-16 Voith Paper Patent Gmbh Verfahren und Wickelkern zur Vermeidung von Wickelfehlern in einer Materialbahn

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452755A (en) * 1945-06-19 1948-11-02 Ecusta Paper Corp Compressed laminated machine roll
US3396918A (en) * 1967-01-09 1968-08-13 Goodyear Tire & Rubber Expandable adapter
DE8033212U1 (de) * 1980-12-13 1981-05-27 Jagenberg-Werke AG, 4000 Düsseldorf Wickelhuelse
US4541585A (en) * 1983-09-06 1985-09-17 Beloit Corporation Compliant drum and rider roll
DE9305304U1 (de) * 1993-04-07 1993-06-17 BASF Magnetics (Holding) GmbH, 67059 Ludwigshafen Wickelkern mit elastischer Oberfläche
EP0729911A2 (fr) * 1995-03-03 1996-09-04 Alcan Deutschland GmbH Noyau d'enroulement métallique
DE29612786U1 (de) * 1996-07-24 1996-09-19 Voith Sulzer Papiermasch Gmbh Wickelkern für eine Wickelmaschine
DE19603211A1 (de) * 1996-01-30 1997-07-31 Jagenberg Papiertech Gmbh Walze für eine Wickelmaschine
US5848756A (en) * 1995-06-28 1998-12-15 Voith Sulzer Papiermaschinen Gmbh Method and device for the continuous winding up of a moving web
DE29907798U1 (de) * 1999-05-03 1999-08-12 Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim Wickelachse

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1537036A (en) * 1975-04-22 1978-12-29 Ici Ltd Core for use in reeling up sheet materials
AU3290993A (en) * 1992-03-03 1993-09-23 E.I. Du Pont De Nemours And Company Soft shell core for photographic film

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452755A (en) * 1945-06-19 1948-11-02 Ecusta Paper Corp Compressed laminated machine roll
US3396918A (en) * 1967-01-09 1968-08-13 Goodyear Tire & Rubber Expandable adapter
DE8033212U1 (de) * 1980-12-13 1981-05-27 Jagenberg-Werke AG, 4000 Düsseldorf Wickelhuelse
US4541585A (en) * 1983-09-06 1985-09-17 Beloit Corporation Compliant drum and rider roll
DE9305304U1 (de) * 1993-04-07 1993-06-17 BASF Magnetics (Holding) GmbH, 67059 Ludwigshafen Wickelkern mit elastischer Oberfläche
EP0729911A2 (fr) * 1995-03-03 1996-09-04 Alcan Deutschland GmbH Noyau d'enroulement métallique
US5848756A (en) * 1995-06-28 1998-12-15 Voith Sulzer Papiermaschinen Gmbh Method and device for the continuous winding up of a moving web
DE19603211A1 (de) * 1996-01-30 1997-07-31 Jagenberg Papiertech Gmbh Walze für eine Wickelmaschine
DE29612786U1 (de) * 1996-07-24 1996-09-19 Voith Sulzer Papiermasch Gmbh Wickelkern für eine Wickelmaschine
DE29907798U1 (de) * 1999-05-03 1999-08-12 Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim Wickelachse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2336066A3 (fr) * 2009-12-16 2011-10-19 Acino AG Bobine destinée à l'enroulement d'une bande de feuille revêtue
FR3009292A1 (fr) * 2013-07-30 2015-02-06 Hegotech Mandrin presentant une paroi externe deformable radialement

Also Published As

Publication number Publication date
EP1176110B1 (fr) 2006-01-11
ATE315533T1 (de) 2006-02-15
EP1176110A3 (fr) 2003-02-12
DE50108650D1 (de) 2006-04-06
DE10036951A1 (de) 2002-02-07

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