EP0048658B1 - Procédé et dispositif d'introduction d'un fil continu dans une machine de coupe - Google Patents

Procédé et dispositif d'introduction d'un fil continu dans une machine de coupe Download PDF

Info

Publication number
EP0048658B1
EP0048658B1 EP81401406A EP81401406A EP0048658B1 EP 0048658 B1 EP0048658 B1 EP 0048658B1 EP 81401406 A EP81401406 A EP 81401406A EP 81401406 A EP81401406 A EP 81401406A EP 0048658 B1 EP0048658 B1 EP 0048658B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
thread
blade
cutting
wire
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
Application number
EP81401406A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0048658A1 (fr
Inventor
Giordano Roncato
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.)
Saint Gobain Adfors SAS
Original Assignee
Vetrotex Saint Gobain SA
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 Vetrotex Saint Gobain SA filed Critical Vetrotex Saint Gobain SA
Publication of EP0048658A1 publication Critical patent/EP0048658A1/fr
Application granted granted Critical
Publication of EP0048658B1 publication Critical patent/EP0048658B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
    • D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
    • 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
    • Y10S83/00—Cutting
    • Y10S83/913—Filament to staple fiber cutting
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0515—During movement of work past flying cutter
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y10T83/4838—With anvil backup
    • Y10T83/4841—With resilient anvil surface
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6572—With additional mans to engage work and orient it relative to tool station

Definitions

  • the present invention relates to the manufacture of wires cut from thermoplastic material, in particular glass wires, and it relates more particularly to a method and a device for feeding a continuous glass wire into a cutting device.
  • the cutting of wires is obtained by passing the filamentary material between a support cylinder or anvil and a cutting cylinder equipped with blades regularly arranged at its periphery.
  • the cutter is arranged to come into contact under pressure with the circumferential surface of the support cylinder, thus defining a cutting area.
  • the cutting device is most often supplied by glass strands drawn directly from a certain number of dies.
  • the cutting machine comprises a support cylinder extended by a truncated cone ending in a vertex of small diameter.
  • a starter roller made up of a series of discs, has just pressed on a generator of the truncated cone.
  • the cutter / anvil assembly rotates continuously at its normal speed.
  • the wire first passing through a guide wheel aligned with the cutting zone, is brought in the vicinity of the top of the truncated cone on which it therefore winds at low speed. Because the wire tends to follow a rectilinear trajectory, it is quickly wedged between the starter roller and the surface of the truncated cone, gradually rises on it by undergoing an increasing drawing speed to be finally taken up between the anvil and cutter.
  • Another type of device described in French publication FR-A-2 397 370, also provides for lateral introduction of the wire into the cutting apparatus.
  • This device comprises an auxiliary support cylinder disposed adjacent to one end of the main support cylinder and axially aligned with the latter, and an auxiliary blade cylinder arranged so as to cooperate with the auxiliary support cylinder.
  • the wire is introduced between the auxiliary cylinders at low speed, and held in this position by a grooved pulley.
  • the speed of the two auxiliary cylinders, which act as the cutting machine, is gradually increased until the wire reaches its normal drawing speed. By moving the grooved pulley, the wire is then brought into the main cutting area.
  • This device constitutes an interesting solution to the difficulties linked to the introduction of a wire into a cutting machine rotating at high speed.
  • it is necessary to dismantle and reassemble the auxiliary cylinders which is not without presenting some drawback in a continuous production which requires the minimum of idle time. .
  • One of the aims of the present invention is to provide a simple method for introducing a wire. continuous in a cutting machine, and which avoids the drawbacks described above.
  • the method according to the invention consists essentially in stretching the wire in an area between the planes passing through the sides of the blade-holder cylinder cooperating with an anvil cylinder, the axes of rotation of said cylinders passing in a substantially horizontal plane, then in deflecting the wire thus stretched towards the cutting zone defined by the contact zone between the anvil cylinder and the blade-holder cylinder, to lay it on at least a portion of the surface of the cylinder arranged upstream; said surface portion being substantially adjacent to the cutting zone.
  • the method of relaunching a wire in a cutting machine comprising an anvil cylinder and a blade holder cylinder is implemented in accordance with the schematic representations given in FIGS. 1 A and 1 B.
  • a wire 15a coming from a die disposed upstream of the cutting machine, is firstly drawn along the path shown in dotted lines by a drawing device called launcher arranged downstream of said machine.
  • the launcher is arranged so that the wire is stretched in an area between the planes passing through the sides of the blade cylinder 19. Furthermore, the path of the wire 15a is such that during this drawing operation the wire remains free from any contact with said cylinders.
  • Fig. 1'8 represents a variant of the process according to the invention.
  • the wire 15a deflected by a pulley 17, is partially wound on the upstream cylinder (anvil 20) before following the dotted path imposed by the launcher. There again the wire is drawn in an area between the planes passing through the sides of the blade cylinder 19.
  • a force F is then exerted on the wire 15a so as to apply it only to the surface portion of the upstream cylinder adjacent to the cutting zone.
  • the wire then follows the path in full line and is maintained in this position until it is entrained in the cutting zone.
  • FIG. 1A The process illustrated schematically in FIG. 1A can be used in a production line as shown in FIG. 2 comprising a series of dies, designated by the reference 10 which deliver several glass strands, an assembly 11 housing a cutting machine and downstream of the chain a device 12 for drawing said glass strands.
  • the dies 10 are supplied from molten glass or glass beads delivered by a supply device not shown. These channels, generally in rhodium-plated platinum, are heated by the Joule effect; they are provided at their lower part with a plurality of orifices from which a plurality of filaments 13 can be drawn: mechanically. These filaments 13 are in the form of sheets and are coated with a lubricating sizing product, commonly called sizing, by passing over a coating device 14. They are then joined together in the form of wires 15 by assembly rollers 16.
  • the wires 15 thus formed are brought after passing over the pulleys 17 to a guide device 18, for example a comb, before being introduced into the cutting machine composed of a blade-holding drum 19 and a support drum 20, the axes of rotation of which pass through a horizontal plane.
  • a guide device 18 for example a comb
  • the assembly 11 housing the cutting machine comprises a frame 21 supporting a device 22 for introducing the wire into the cutting zone; this device 22 is placed above the cutting machine consisting of a blade-holding drum 19 and a support drum 20 and surrounded by a cover shown diagrammatically at 23. The whole rests on a floor referenced 24.
  • a device for receiving and transferring the cut fibers is symbolized at 25.
  • a launcher 12 Downstream is shown a launcher 12, shown diagrammatically by two cylinders 26 and 27 cooperating to stretch a wire 15a, emanating from one of the dies 10, wire then recovered in a chute 28.
  • the launch can also be ensured by
  • Figs. 3 and 4 respectively show front and sectional views of the device 22 for introducing the wire into the cutting zone.
  • This device essentially comprises a jack 30, the rod 41 of which is provided at its end with a pusher assembly 31 and on which is fixed very rigidly a hollow rod 32 parallel to the rod of the jack 30.
  • This rod 32 passes through a hole or eye 33 formed in a plate extending outwardly from the base of the jack 30.
  • the purpose of this rod is in particular to precisely preserve the orientation of the pusher by preventing the rod of the jack from turning on itself when the said jack is put into service.
  • the pusher itself consists of a rigid piece 34, preferably metallic, and a part 35, made of a flexible material, partially embedded in the previous one.
  • the part 34 has at its lower part a thinning which makes it possible to deeply penetrate the wire between the anvil and the blade holder at the time of its recovery.
  • One of the large sections of the part 34 comprises a housing having a vertical face and a face inclined along the slope imparted by the thinning of the part to its lower part.
  • Part 35 consists of a plate closely fitting the housing described above.
  • the upper part of the plate corresponding to the vertical face of the housing is tightly fixed to the latter (by gluing, for example).
  • the lower part corresponding to the inclined face of the housing is free relative to the latter.
  • the upper and lower parts of the plate 35 are delimited by a horizontal groove 36 deeply cutting the external face of said plate over its entire width.
  • the width of the plate 35 is substantially equal to the width of the active cutting zone defined by the length of the cutting blades.
  • Fig. 4 which represents a partial section of the pusher 31, shows its internal structure.
  • the hollow rod 32 is connected directly to an internal conduit 37 which connects it to a tubular chamber 38; this chamber 38 extends horizontally over a distance substantially equal to the width of the plate 35.
  • the chamber 38 communicates with the outside by a slot 39 (or by a series of conduits) which opens facing the lower part of plate 35.
  • the wire introduction device referenced 22 in FIG. 2 and as illustrated in FIGS. 3 and 4, is activated.
  • the displacement of the pusher is triggered automatically as soon as the launcher reaches the chosen drawing speed.
  • the pusher 31 In its rectilinear movement, the pusher 31 meets the wire 15a, gradually drives it and at the end of the stroke, introduces it deeply between the blade-holder cylinder 19 and the anvil cylinder 20 (fig. 4). This action has the effect of bringing the fit 15a into contact with a portion of the surface of the blade holder and the anvil, said portions being adjacent to the cutting zone.
  • the pusher 31 returns to its rest position and the downstream end of the wire 15a is discharged by the launcher 12.
  • the lower end of the pusher is applied to the surface of the blade cylinder.
  • the device described above is particularly suitable when the surface of the cylinder arranged upstream is discontinuous. This is the case, for example, of the blade-holder cylinders, the structure of which is such that the cutting edge of the blades only protrudes into the cutting zone.
  • These cylinders mounted upstream are generally powered and simultaneously assume the drawing of the wires and the drive of the anvil by cooperation of the surfaces in contact in the cutting zone.
  • FIG. 5 illustrating the method of introducing the wire according to FIG. 1 B.
  • the device 50 comprises an arm 51 pivoting about an axis 52 and provided at its free end with a roller 53 mounted idly on its axis, parallel ment to the axes of rotation of the anvil 20 and the blade holder 19.
  • the arm 51 is set back from the cutting machine and the roller 53 has a length sufficient to apply over the entire width of the cylinder 20. For for clarity of the figure, only one wire is shown.
  • the die is restarted as described above, but the wire 15a drawn by the launcher is then partially wound on the surface of the anvil 20 in rotation after passing over a pulley 17, the device 50 being in the rest position shown in dotted lines.
  • the device 50 is actuated and takes the position shown in solid lines. In this position the roller 53 rests on the surface of the anvil and presses the wire 15a on the surface portion adjacent to the cutting zone, which causes the wire to be drawn into the cutting zone.
  • the method according to the invention and the implementation devices described above apply to the continuous manufacture of cut fibers obtained either from yarns from several dies, or from yarn (s) from (s) only one sector.
  • the cutting machine is no longer supplied with power, and it is possible to envisage reducing its speed of rotation, or even stopping it.
  • the recovery process can be simplified since it is no longer necessary to use the launcher.
  • the operator manually stretches the wire downstream of the cutting machine, which it starts to rotate slowly, then activates the control of the wire introduction device.
  • the method and its implementation according to the invention makes it possible to relaunch a wire very quickly and safely; in fact, the automatic introduction of the wire into the cutting zone eliminates any risk for the operator responsible for restarting the wire.
  • the device for implementing the method is entirely independent of the cutting machine. As a result, it can be used on any cutting machine. In addition, it does not in any way interfere with the disassembly and reassembly of a cutting machine, which is particularly appreciable in the context of continuous production where stops must be reduced to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Wire Processing (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP81401406A 1980-09-12 1981-09-10 Procédé et dispositif d'introduction d'un fil continu dans une machine de coupe Expired EP0048658B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8019704A FR2490251A1 (fr) 1980-09-12 1980-09-12 Procede et dispositif d'introduction d'un fil continu dans une machine de coupe
FR8019704 1980-09-12

Publications (2)

Publication Number Publication Date
EP0048658A1 EP0048658A1 (fr) 1982-03-31
EP0048658B1 true EP0048658B1 (fr) 1984-05-16

Family

ID=9245872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401406A Expired EP0048658B1 (fr) 1980-09-12 1981-09-10 Procédé et dispositif d'introduction d'un fil continu dans une machine de coupe

Country Status (4)

Country Link
US (1) US4411180A (enrdf_load_stackoverflow)
EP (1) EP0048658B1 (enrdf_load_stackoverflow)
DE (1) DE3163649D1 (enrdf_load_stackoverflow)
FR (1) FR2490251A1 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551160A (en) * 1984-10-22 1985-11-05 Owens-Corning Fiberglas Corporation Method and apparatus for forming glass filaments
SE502070C2 (sv) * 1993-11-19 1995-07-31 Aplicator System Ab Anordning för repetitiv utmatning av fiberknippen med spridd fiberriktning från en magasinsrulle med fibertråd
US6148640A (en) * 1998-08-03 2000-11-21 Johns Manvill International, Inc. Method for making chopped fiber
FR2804974B1 (fr) * 2000-02-16 2002-06-28 Vetrotex France Sa Systeme destine a la fabrication de fils coupes en matiere thermoplastique
FR2811340B1 (fr) * 2000-07-05 2002-08-30 Vetrotex France Sa Ensemble et procede de coupe de meches formees de filaments en matiere thermoplastique
FR2858973B1 (fr) * 2003-08-20 2007-06-08 Saint Gobain Vetrotex Procede de coupe directe sous filiere et dispositif pour sa mise en oeuvre
FR2872154B1 (fr) * 2004-06-28 2006-08-04 Saint Gobain Vetrotex Installation de prise automatique de fils
US7424842B1 (en) * 2004-08-17 2008-09-16 Johns Nanville Fiber chopper
US7363842B1 (en) * 2004-08-17 2008-04-29 Johns Manville Fiber chopper
FR2876392B1 (fr) 2004-10-07 2006-12-15 Saint Gobain Vetrotex Systeme destine a la fabrication de fils coupes
FR2888838B1 (fr) 2005-07-22 2007-10-05 Saint Gobain Vetrotex Installation de prise automatique de fils
US20070044607A1 (en) * 2005-08-30 2007-03-01 Bascom Randall C Fiber chopper with improved idler roll
FR2916003B1 (fr) * 2007-05-11 2009-08-21 Saint Gobain Vetrotex Systeme destine a la fabrication de fils coupes en matiere thermoplastique.
EP2642009A1 (de) * 2012-03-22 2013-09-25 Dietze&Schell Maschinenfabrik GmbH&Co. Kg Vorrichtung zur Herstellung von geschnittenen Glasfasern
US20180354839A1 (en) 2015-12-02 2018-12-13 Ocv Intellectual Capital, Llc Chopper assembly and method for manufacturing chopped fibers
WO2017127254A1 (en) 2016-01-19 2017-07-27 OCV Intellectual Capital , LLC Chopper assembly for and method of manufacturing chopped fibers
CN108866680A (zh) * 2018-07-10 2018-11-23 张家港市利佳纺织有限公司 一种可定长计量型切纱装置
IT202100002840A1 (it) * 2021-02-09 2022-08-09 Mercurio Srl Impianto di taglio per fibra di vetro ad alta flessibilità

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB960955A (en) * 1962-09-10 1964-06-17 Fmc Corp Method of producing staple fibres
US3285721A (en) * 1962-11-09 1966-11-15 Owens Corning Fiberglass Corp Method and apparatus for producing strand package
US3485120A (en) * 1966-09-08 1969-12-23 Eastman Kodak Co Method and apparatus for cutting elongated material
US3731575A (en) * 1971-11-08 1973-05-08 Owens Corning Fiberglass Corp Chopper for linear material
BE792085A (fr) 1971-11-30 1973-03-16 Fibreglass Ltd Machine a sectionner en longueur des torons et analogues
FR2204175A5 (enrdf_load_stackoverflow) 1972-10-25 1974-05-17 Brebion Pierre
US3815461A (en) * 1972-10-26 1974-06-11 Johns Manville Apparatus for chopping strand
JPS5438926A (en) 1977-07-11 1979-03-24 Nitto Boseki Co Ltd Cutting of glass strand and its device
US4344786A (en) * 1981-01-02 1982-08-17 Owens-Corning Fiberglas Corporation Method and apparatus for gathering strand material

Also Published As

Publication number Publication date
US4411180A (en) 1983-10-25
EP0048658A1 (fr) 1982-03-31
DE3163649D1 (en) 1984-06-20
FR2490251A1 (fr) 1982-03-19
FR2490251B1 (enrdf_load_stackoverflow) 1982-10-08

Similar Documents

Publication Publication Date Title
EP0048658B1 (fr) Procédé et dispositif d'introduction d'un fil continu dans une machine de coupe
EP0040145B1 (fr) Dispositif pour la coupe de fils continus, notamment de fils de verre
FR2660642A1 (fr) Dispositif pour enrouler un materiau mince, notamment des sacs en film plastique relies ensemble en un ruban.
CH637699A5 (fr) Dispositif automatique d'introduction d'un voile de fibres textiles dans un coiler.
EP0005664A1 (fr) Procédé de transfert d'un matériau filiforme d'une broche d'enroulement à une autre et dispositif pour la mise en oeuvre du procédé
CH647935A5 (fr) Procede pour la production d'un materiau de remplissage, machine pour sa mise en oeuvre, application du procede et installation pour la production d'un boudin de filtres de cigarettes.
EP0505275A1 (fr) Procédé et dispositif de fabrication d'un fil composite
EP1297204B1 (fr) Ensemble et procede de coupe de meches formees de filaments en matiere thermoplastique
FR2632662A1 (fr) Dispositif pour former des bobines utilisees comme bobines d'alimentation pour un retordage
EP1369222A1 (fr) Procédé de lacage sélectif de fils sur des préformes textiles multidimensionnelles et dispositif pour sa mise en oeuvre
CH659488A5 (fr) Procede et dispositif pour produire des fils guipes.
BE1006222A3 (fr) Dispositif de fabrication d'un feutre de fibres.
FR2466531A1 (fr) Broche de filage ou de retordage a double torsion a d ispositif d'enfilage pneumatique
EP1339902B1 (fr) Procede et dispositif de fabrication d'une meche comportant des filaments de verre
BE1007920A5 (fr) Systeme d'insertion de trame pour metier a jet de fluide.
FR2630460A1 (fr) Procede et dispositif pour former des bobines sur lesquelles deux composants d'un fil sont enroules d'une maniere etalee
EP1547953B1 (fr) Dispositif de reprise et d'individualisation de fils sortant d'une machine de traitement
EP0208684B1 (fr) Procede et installation de traitement thermique en continu d'un fil textile fin
EP0286769A1 (fr) Procédé et dispositif pour le changement automatique de pots destinés à recevoir des mèches de fibres provenant de machines textiles
EP0104292B1 (fr) Procédé et dispositif pour distribuer à la volée des jupes thermorétractables sur des récipients en mouvement
EP0651078B1 (fr) Procédé de filage centrifuge
EP0410906A1 (fr) Machine pour la production et transformation de fil comprenant un organe de traitement disposé entre deux délivreurs et procédé permettant l'introduction automatique du fil à l'intérieur de ces éléments lors d'une opération de relance
BE473746A (fr) Perfectionnements a la fabrication de feutres, notamment en fibres de verre ou autres fibres minerales
FR2982792A1 (fr) Tete de depose d'un ruban de fibres impregnees, et dispositif de placement d'un tel ruban
FR2539961A1 (fr) Procede et dispositif de capage en continu d'un boudin de tabac

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

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19820915

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 3163649

Country of ref document: DE

Date of ref document: 19840620

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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 81401406.4

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

Ref country code: GB

Payment date: 20000811

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20000918

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20000920

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20000928

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20000930

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20001012

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 20010910 *VETROTEX SAINT-GOBAIN

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 EXPIRATION OF PROTECTION

Effective date: 20010909

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 EXPIRATION OF PROTECTION

Effective date: 20010910

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

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20010929

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 20010909

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20010910

EUG Se: european patent has lapsed

Ref document number: 81401406.4