EP0987068A2 - Procédé et dispositif d'extrusion d'un profil creux ou corps similaires à partir de matériaux en barre - Google Patents

Procédé et dispositif d'extrusion d'un profil creux ou corps similaires à partir de matériaux en barre Download PDF

Info

Publication number
EP0987068A2
EP0987068A2 EP99810787A EP99810787A EP0987068A2 EP 0987068 A2 EP0987068 A2 EP 0987068A2 EP 99810787 A EP99810787 A EP 99810787A EP 99810787 A EP99810787 A EP 99810787A EP 0987068 A2 EP0987068 A2 EP 0987068A2
Authority
EP
European Patent Office
Prior art keywords
inlet
tool
profile
section
cross
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
EP99810787A
Other languages
German (de)
English (en)
Other versions
EP0987068A3 (fr
EP0987068B1 (fr
Inventor
Adolf Ames
Diethelm Wömpner
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
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 Alcan Technology and Management Ltd, Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Publication of EP0987068A2 publication Critical patent/EP0987068A2/fr
Publication of EP0987068A3 publication Critical patent/EP0987068A3/fr
Application granted granted Critical
Publication of EP0987068B1 publication Critical patent/EP0987068B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
    • B21C33/006—Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets

Definitions

  • the invention relates to a method for extruding a Hollow section or the like. Body from an ingot that is in a recipient bore of a transducer and by means of of a press ram in the pressing direction a shaping cross section a mold is fed. In addition the invention relates to a particularly suitable device.
  • the material that has become ductile becomes one - In the metal sector, for example from non-ferrous, sintered or Steel, but especially preformed from an aluminum alloy - heated cast ingot or rod section from a stamp - or with hydrostatic extrusion by means of a liquid - from a recipient through one or more shape cross-section / s of the pressing direction crossing mold pressed.
  • the punch moves in the direction the course of the emerging profile on the Shape cross section too, with indirect or reverse extrusion the material goes through against the direction of the punch pressed a tool attached to the hollow stamp is.
  • hollow profile tools with die plate used, as disclosed for example in DE 24 46 308 A1.
  • the die plate is used to shape the profile outer contour integrated in a mandrel part.
  • mandrel - in the case of multi-chamber profiles there are several mandrels - for shaping the future inner contour that the mandrel into the die plate and over it shaping area protrudes.
  • the ductile material is thus fed into the press tool directed that the partial strands of the individual enemas under mandrel support arms - in a welding chamber - flow together again and weld together.
  • the material or the aluminum alloy flows in a further pressing process past the mandrel and the die opening and takes on the intended shape of the hollow profile.
  • the inlets are always outside around the profile cavity - or their several - arranged around; the aluminum alloy is the shaping area of the tool from the outside and mainly fed through several inlets. Should in the case of multi-chamber hollow profiles can not be adequately fed outside Material inlets for feeding additionally indoors of the hollow profile provided.
  • the main enemas are always over the outer contour of the profile cavity is arranged.
  • the size of a hollow profile that can be produced - its maximum possible circumferential diameter - is due to the recipient diameter and the size of the outside around the cavity arranged inlets and the load capacity of the mentioned Mandrel arms limited.
  • metal bars especially those made of aluminum alloys, with contamination - for example Lubricant residues - as well as with an oxide layer are covered.
  • oxide particles on the The forehead and outer surface can be extremely harmful proven for the structure of the profile; the through it emerging zone with contaminating inclusions is - depending on profile shape and pressing speed - relatively long and forces with increasing quality requirements in addition, always longer profile sections than waste to take out of the emerging strand - with everyone resulting consequences of decreasing economy with shrinking profile output.
  • the material of the ingot is under pressure introduced into a central inlet of the mold and the resulting ductile mass in one Angle to the pressing direction to the outside through several channels led to the shaping cross section.
  • the material to be pressed arrives So no longer by several arranged around the outside of the hollow profile Enemas to the molding area but is through a central inlet opening inside the hollow profile cavity fed. From this middle inlet flows the material to be pressed according to the teaching of the invention via radial and outwardly inclined channels of a large one Welding chamber and the molding area.
  • the radius of the profile to be produced can be significantly larger be than the recipient diameter.
  • a device for Extrusion of a hollow profile or the like Body from one Ingot in a recipient bore of a transducer guided and by means of a press ram in the pressing direction is supplied to that shaping cross section at which of the tool inlet side of the mold into this an approximately central inlet within the profile cavity is molded from the wall at an angle of preferably more than 90 ° to the forehead several arm-like Run out channels; this is connected to that of a welding chamber subordinate shaping cross section.
  • the middle inlet is preferably arranged in the center of the tool.
  • irregular Profile shapes become the area focus of the Infeed as possible in the center of gravity of the profile or in the middle of the tool - or in another suitable area of the profile cavity - provided.
  • the profile size can be produced by Geometrically, press size and recipient diameter are not is limited; it can with small recipient diameter also on extrusion presses with relatively low press force Pipes or hollow profiles with a large circumferential diameter can be produced as the necessary for the forming Quantities of pressed material over center inlets with a small opening cross-section - So small opening diameter - the Shaping zone can be supplied. So it becomes possible Profiles with a small cross-sectional area with a large circumferential diameter even when difficult to form Materials from small recipients with high spec. Pressure too shape, which makes the cross-sectional spectrum strong is expanded.
  • the tool load is in that for the profile shaping important area - namely inside the mandrel part - essential deeper, since the load is only through the cross-sectional opening the middle inlet is built up and not as in conventional tools over the entire cross-sectional area Profile cavity surfaces projected onto the tool inlet side.
  • the main load on the cross section of the press bolt to be pressed takes place in the tool area outside the central Inlet or middle inlets. This burden can over the outside of the tool - so not shaping area - added via support tools become.
  • the procedurally lower tool load results in longer use more form-fitting profiles or allowed at production of lighter cross sections or those made of profile materials that are difficult to form.
  • An extrusion press 10 for direct extrusion of profiles 12 has, according to FIG. 1, a press ram 16 on a press cylinder 14, which runs in the longitudinal axis A of a bore 19 penetrating a recipient or receiver 18.
  • the diameter d of a press disk 17 on the free end face of the press die 16 is slightly shorter than the free bore diameter d 1 , so that the press die 16 is able to plunge into the so-called recipient bore.
  • the mentioned free bore diameter d 1 is limited by the inner surface 20 of a recipient sleeve 21 inserted into the receiver 18 or its bore 19.
  • the interior of this recipient sleeve 21 is referred to below as the recipient bore 22.
  • the rest position of the press ram 16 is dimensioned that the recipient bore 22 is indicated at 24 Block or bars of light metal - especially one preheated aluminum alloy - by a loading carriage 26 set in front and from the punch 16 in the pressing direction x are inserted into the recipient bore 22 can.
  • a lifting device 36 for a shear knife 38 can be seen above the recipient 18 in FIG. 1 and is provided so as to be movable radially to a gap 40 between the pickup 18 and the molding tool 32.
  • a mandrel part 33 is provided between the recipient 18 and the plate-like die 32 for generating an inner contour of an emerging profile 12 a .
  • the die plate is followed in the pressing direction x by a pressure plate 42 in a pressure plate holder 44.
  • a pressure ring 46 connects to that pressure plate 42 and a wear ring 48 in the crosshead 30 connects to this.
  • a tool holder for the tool holder 28, the pressure plate holder 44 and the pressure ring 46 is indicated at 50.
  • a so-called pressing rest 52 from which the pressing disk 17 has been removed, is found at the end of the recipient bore 22 remote from the die on the tool surface facing it. That tool surface remains at a distance from the recipient face 23 a , thanks to a mouth collar 54 formed by the protrusion h of the recipient sleeve 21. Also on the rear recipient front 23, the recipient bore 22 surrounds an annular collar 56 as a protrusion of the recipient sleeve 21.
  • the recipient or receiver 18 is moved back - for example by more than 450 mm - until the press residue 52 is free (FIG. 5). If the ingot 24 protrudes beyond the mouth collar 54 with a cantilever length t of, for example, about 10 mm, the ingot 24 is compressed with the press ram 16; the ingot 24 should not be able to be moved by the shear knife 38 in a subsequent shearing process. Before this shearing process, the pickup 18 is moved back against the pressing direction x until the rear tool surface of the molding tool or the die 32 is at a distance from the recipient face 23 a . In this position transducer 18 and die 32 are temporarily fixed.
  • the pickup 18 is returned to the Die or the mold 32 driven - the pressing process can start again.
  • 7, 8 represent a plate-like molding tool or a die 32 with a diameter n of approximately 500 mm here from two die parts 31, 31 a for producing a rotationally symmetrical tube 12 r or the like. Hollow profile circular cross-section with the inside diameter q of here 236 mm.
  • a so-called center inlet 64 of a frustoconical shape - with the die axis M as a line of symmetry - is formed in the die end 62 of the mandrel or die part 31 near the die.
  • the diameter d 2 of its inlet contour K measures 170 mm.
  • Arm-like channels 66 branch off from the inlet wall 65, which is inclined at an angle w to the die face 62, here 65 °, whose channel outer contour 67 falling into the image plane runs approximately parallel to the contour of the inlet wall 65, which is diametrically distant in this image plane, and with the other visible - adjacent - limit the inlet wall 65 to an angle w 1 of here 50 °. 7 - in the pressing direction x gradually tapering to a dome-like end section 66 e - channels 66 end in the pressing direction x at an annular welding chamber 68, which has a circular shaping cross section 70 of width z - for the corresponding wall thickness of the Rohres 12 r - follows.
  • the shaping cross section 70 is delimited on the inside by the annular circumferential surface 72 of a mandrel 74 here.
  • the material to be pressed is therefore not - as usual - supplied to the shaping area through a plurality of inlets arranged around the hollow profile or tube 12 r , but only through that central inlet 64.
  • the material to be pressed is channeled 66, 66 through the radially inclined arrangement a from the center inlet 64 to the outside of that welding chamber 68 and the shaping cross section 70.
  • the center of gravity becomes of the inlet, if possible in the center of gravity of the profile or in the middle of the tool M - or in another suitable one Area of the profile cavity - provided.
  • hollow profiles 12 p polygonal or asymmetrical profile shape can also be formed with a central inlet 64 a .
  • its inlet wall 65 produces an asymmetrical cross-sectional shape, ie the die axis M lies outside the inlet axis M 1 .
  • the required quantity of material supply can be achieved via at least two of the center inlets 64 described, as indicated by FIGS. 11, 12 on the molding tool 32 a .
  • the center axes M 1 of the center inlets 64 run at a radial distance k from the die axis M.
  • the production of round tubes 12 r of different diameters q and wall thicknesses y can be carried out using molding tools 32 b , in which mandrel rings 76 of different outer diameters and die plates 31 a of different inner diameters are provided in defined cross-sectional areas.
  • the main load on the cross section of the press bolt to be pressed takes place in the tool area outside the center inlet or the middle enemas 64.
  • This burden can according to the arrows Q on the outside of the Molding tool 30 - that is, the non-shaping area - be taken up by support tools.
  • FIG. 16 The oblique view of FIG. 16 on a mandrel part 31 of a die 32 impressively shows their structure with the center inlet 64, the subsequent channels 66 and one in the Protruding die axis, the profile inner surface - and thus the inner boundary 72 of the shaping cross section 70 - determining mandrel formation 74 plate-like shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP99810787A 1998-09-16 1999-09-02 Procédé et dispositif d'extrusion d'un profil creux ou corps similaires à partir de matériaux en barre Expired - Lifetime EP0987068B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19842291A DE19842291A1 (de) 1998-09-16 1998-09-16 Verfahren zum Strangpressen eines Hohlprofils od. dgl. Körpers aus einem Barren sowie Vorrichtung dazu
DE19842291 1998-09-16

Publications (3)

Publication Number Publication Date
EP0987068A2 true EP0987068A2 (fr) 2000-03-22
EP0987068A3 EP0987068A3 (fr) 2001-06-13
EP0987068B1 EP0987068B1 (fr) 2004-06-09

Family

ID=7881084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810787A Expired - Lifetime EP0987068B1 (fr) 1998-09-16 1999-09-02 Procédé et dispositif d'extrusion d'un profil creux ou corps similaires à partir de matériaux en barre

Country Status (7)

Country Link
US (1) US6192730B1 (fr)
EP (1) EP0987068B1 (fr)
AT (1) ATE268650T1 (fr)
CA (1) CA2281207C (fr)
DE (1) DE19842291A1 (fr)
ES (1) ES2217720T3 (fr)
NO (1) NO318543B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105478513A (zh) * 2016-01-14 2016-04-13 昆明理工大学 一种模拟等通道转角挤压的装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145877C1 (de) * 2001-08-28 2003-05-08 Alcan Tech & Man Ag Verfahren zum Strangpressen eines Hohlprofils od. dgl. Körpers aus einem Barren sowie Vorrichtung dafür
CN104384224B (zh) * 2014-11-25 2017-02-22 昆山国展金属工业有限公司 圆形太阳花型散热片铝挤压模具
CN106424188B (zh) * 2016-09-01 2018-02-02 中北大学 空心坯料成形大高宽比内环筋的旋转挤压成形模具
CN106363031B (zh) * 2016-09-01 2018-01-09 中北大学 空心坯料成形大高宽比内环筋的旋转挤压成形方法
CN114798790B (zh) * 2022-02-15 2024-04-16 江苏鑫昌铝业有限公司 一种超宽微通道挤压模具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2446308A1 (de) 1974-09-27 1976-04-08 Aluminium Walzwerke Singen Vorrichtung zum strangpressen von hohlprofilen oder teilhohlprofilen
DE2812690A1 (de) 1978-03-23 1979-10-04 Aluminium Walzwerke Singen Verfahren und vorrichtung zum strangpressen von hohlprofilen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB604905A (en) * 1942-10-30 1948-07-13 British Thomson Houston Co Ltd Improvements in and relating to processes and dies for extruding tubular products
JPS5856657B2 (ja) * 1979-02-09 1983-12-16 日本軽金属株式会社 押出成形用ダイス
GB2071543B (en) * 1980-03-19 1983-06-02 Erbsloeh Gmbh & Co Extrusion die
JPS56165512A (en) * 1980-05-22 1981-12-19 Showa Alum Corp Extruded aluminum shape
JPS61209716A (ja) * 1985-03-12 1986-09-18 Showa Alum Corp 押出加工装置
DK0398747T3 (da) * 1989-05-18 1994-03-28 Bwe Ltd Kontinuerligt extruderingsapparat
JPH057925A (ja) * 1991-07-05 1993-01-19 Showa Alum Corp 大型中空型材成形用の押出加工装置
EP0699487A1 (fr) * 1994-08-02 1996-03-06 Norsk Hydro A/S Filière d'extrusion
JPH09174141A (ja) * 1995-12-22 1997-07-08 Yano Eng:Kk 金属製中空材押出用ダイス
DE19605885C1 (de) * 1996-02-05 1997-08-21 Alusuisse Lonza Services Ag Verfahren zum Strangpressen eines Profils od. dgl. Körpers aus einem Barren, sowie Verwendung des Verfahrens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2446308A1 (de) 1974-09-27 1976-04-08 Aluminium Walzwerke Singen Vorrichtung zum strangpressen von hohlprofilen oder teilhohlprofilen
DE2812690A1 (de) 1978-03-23 1979-10-04 Aluminium Walzwerke Singen Verfahren und vorrichtung zum strangpressen von hohlprofilen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105478513A (zh) * 2016-01-14 2016-04-13 昆明理工大学 一种模拟等通道转角挤压的装置
CN105478513B (zh) * 2016-01-14 2018-03-06 昆明理工大学 一种模拟等通道转角挤压的装置

Also Published As

Publication number Publication date
US6192730B1 (en) 2001-02-27
EP0987068A3 (fr) 2001-06-13
NO994454D0 (no) 1999-09-14
DE19842291A1 (de) 2000-03-23
NO994454L (no) 2000-03-17
CA2281207A1 (fr) 2000-03-16
ES2217720T3 (es) 2004-11-01
CA2281207C (fr) 2005-11-15
ATE268650T1 (de) 2004-06-15
EP0987068B1 (fr) 2004-06-09
NO318543B1 (no) 2005-04-11

Similar Documents

Publication Publication Date Title
DE60007688T2 (de) Verfahren und Vorrichtung zur Herstellung eines Werkzeugs
DE102008048496A1 (de) Verfahren zur Herstellung von Blechformteilen und Vorrichtung zur Durchführung des Verfahrens
DE10232608B4 (de) Verfahren zum Strangpressen eines Profils od. dgl. Stranges aus einem Bolzen oder Barren sowie Vorrichtung dafür
WO1986003440A1 (fr) Procede et dispositf pour separer des segments de tubes
EP0987068B1 (fr) Procédé et dispositif d'extrusion d'un profil creux ou corps similaires à partir de matériaux en barre
DE2237276A1 (de) Druckstueck zur verwendung in einer strangpresse zum indirekten strangpressen
DE19605885C1 (de) Verfahren zum Strangpressen eines Profils od. dgl. Körpers aus einem Barren, sowie Verwendung des Verfahrens
EP0114570B1 (fr) Dispositif de boudinage d'un profil creux
EP0114571A2 (fr) Dispositif de boudinage avec remontée de matière d'un profil creux
EP1203623B1 (fr) Procédé d'extrusion de profilés tubulaires
DE19842293C2 (de) Verfahren zum Strangpressen eines Hohlprofils o. dgl. Körpers aus einem Barren sowie Vorrichtung dafür
DE102013017178B4 (de) Strangpresse zur Herstellung von ebenen Blechen
EP0129010B1 (fr) Procédé et dispositif pour le filage de profilés creux
WO2003020454A1 (fr) Procede pour l'extrusion d'un profile creux ou d'un corps similaire a partir d'une barre, et dispositif correspondant
DE10145877C1 (de) Verfahren zum Strangpressen eines Hohlprofils od. dgl. Körpers aus einem Barren sowie Vorrichtung dafür
DE3424489A1 (de) Vorrichtung und verfahren zum extrudieren von rohren
DE19703576C2 (de) Vorrichtung zum Strangpressen eines Profils od. dgl. Körpers aus einem Barren
DE10231562A1 (de) Verfahren zum Strangpressen eines Profils o. dgl. Stranges aus einem Bolzen oder Barren sowie Vorrichtung dafür
DE865586C (de) Verfahren und Vorrichtung zur Herstellung von Rohren oder Profilen
WO2003006189A1 (fr) Dispositif pour extruder un profile ou une barre similaire a partir d'une tige ou d'un lingot
EP4355511A1 (fr) Procédé et dispositif de formage pour la fabrication de pièces moulées annulaires
WO2023240371A1 (fr) Procédé et dispositif de formage pour la fabrication de pièces moulées annulaires
DE102011012508A1 (de) Stranggießanlage und Verfahren zum Anfasen von Knüppeln oder Brammen bzw. zum Umformen von Halbzeug
DE102017105468A1 (de) Verfahren und Pressvorrichtung zum Herstellen eines Werkstücks aus nach einer spanenden Bearbeitung eines Fertigungsteils erhaltenen Spänen
DE3035289C2 (fr)

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7B 21C 23/08 A, 7B 21C 25/00 B, 7B 21C 25/02 B

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCAN TECHNOLOGY & MANAGEMENT AG

17P Request for examination filed

Effective date: 20011213

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: SI PAYMENT 20011213

17Q First examination report despatched

Effective date: 20020827

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): AT BE ES FI FR GB IT NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE ES FI FR GB IT NL SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040825

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2217720

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050310

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20050816

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20050819

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050824

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050919

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050921

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20050922

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20050927

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20051017

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060902

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060903

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070401

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060902

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20070401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060902

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20060904

BERE Be: lapsed

Owner name: *ALCAN TECHNOLOGY & MANAGEMENT A.G.

Effective date: 20060930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060904

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070925

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080902