EP0003783A1 - Yarn wad cooling method - Google Patents

Yarn wad cooling method Download PDF

Info

Publication number
EP0003783A1
EP0003783A1 EP79100386A EP79100386A EP0003783A1 EP 0003783 A1 EP0003783 A1 EP 0003783A1 EP 79100386 A EP79100386 A EP 79100386A EP 79100386 A EP79100386 A EP 79100386A EP 0003783 A1 EP0003783 A1 EP 0003783A1
Authority
EP
European Patent Office
Prior art keywords
plug
yarn
thread
cooling section
stopper
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
EP79100386A
Other languages
German (de)
French (fr)
Other versions
EP0003783B1 (en
Inventor
Heiko Herold
Richard Herold
Rudolf Jürgen Dr. Klee
Edgar Dr. Muschelknautz
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.)
Bayer AG
Original Assignee
Bayer AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6032601&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0003783(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0003783A1 publication Critical patent/EP0003783A1/en
Application granted granted Critical
Publication of EP0003783B1 publication Critical patent/EP0003783B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • German patent application 2,053,354 describes a method in which a hot yarn plug in a bar guide is cooled by blowing air through it.
  • the process is not very flexible; when the treatment temperature or the thread thickness changes, the friction behavior of the plug changes and the temperature profile is uneven.
  • the hot stopper is placed on moving screens or belts. Since the stopper is not guided laterally, it is wetted with a fine atomized liquid mist. The thread must be dried before winding. The stopper is often not released at the end but at weak points that do not have been sufficiently cooled. ,
  • the object of the invention is to develop an economical method for cooling a yarn stopper, in which a uniform cooling of the stopper is achieved and when the take-off results in a smooth thread run.
  • the object is achieved in that the plug is pushed through a cooling section with a rod guide, a closed liquid jet is directed onto the yarn plug within this area, and the yarn is deflected by the plug when it is drawn off.
  • the dry hot stopper is guided and held in the cooling section by at least 3 elastic rods. In this area it is struck by one or several cold closed liquid jets and cooled effectively and evenly over the entire cross-section.
  • the structure of the yarn stopper emerging from the cooling section is so uniform that when the thread is drawn off, the thread loosens at the end of the stopper and the stopper is not expanded due to internal defects. This guarantees that the thread runs smoothly.
  • the withdrawn, still wet thread is deflected sharply, whereby the liquid is thrown off by centrifugal forces; this means that it is not necessary to dry the thread separately. Because of the rod guide in the cooling section, the liquid does not need to be atomized, but can act as a jet on the stopper.
  • the yarn plug is moved through a cooling section with a rod guide which is not in contact with the hot upsetting part. This avoids heat transfer from the upsetting part to the cooling section and the method according to the invention is even more effective. It is necessary to provide at least 3 elastic rods that are only clamped on one side at the beginning of the cooling section to guide the plug in the cooling section. The rods help to ensure that the plug is only pulled out at its end.
  • the distance can be up to 5 times the diameter of the plug without the need for special guiding of the plug. At such a distance, the plug does not buckle when entering the cooling section.
  • the process is suitable for today's high take-off speeds.
  • the filament yarn can be drawn off at 2000 m / min and more when the thread is running smoothly.
  • the parameters on the texturing nozzle are adjusted so that the end of the uncooled plug moves in the running direction and that of the cooled plug against the running direction of the thread.
  • the liquid jet then always hits the end of the plug.
  • the filament yarn 1 is compressed in the texturing nozzle 2 and guided by starches 3, which are attached to the exit of the texturing device. It then enters the cooling section, which in this case is not directly connected to the texturing device.
  • the hot yarn plug is not guided in the gap 4; no disturbances were observed as a result.
  • the cooling section consists of a holder 5 on which 4 elastic rods 6 are fastened on one side. The area between the rods 6 is greater than / equal to the area of the compression part of the texturing nozzle.
  • the texturing device is set so that where there is no more liquid on the stopper, the stopper begins to dissolve.
  • the thread 9 is drawn off, it being sharply deflected by the roller 10; a practically dry fader can be wound up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Auf einen heissen Garnstopfen (1) wird in einer Kühlstrecke mit Stangenführung (6) ein geschlossener Flüssigkeitsstrahl (7) geleitet, was zu einer schnellen, sehr gleichmässigen Abkühlung führt. Beim Abzug ergibt sich bei Fadengeschwindigkeiten von 2000 m/min und mehr ein ruhiger Fadenverlauf. Zum Trocknen reicht meist ein Umlenken des Fadens aus (10), da die Flüssigkeit abgeschleudert wird.A closed liquid jet (7) is passed onto a hot yarn plug (1) in a cooling section with a rod guide (6), which leads to rapid, very even cooling. When pulling off, the thread runs smoothly at thread speeds of 2000 m / min and more. Deflecting the thread is usually sufficient for drying (10) since the liquid is thrown off.

Description

In der deutschen Offenlegungsschrift 2 053 354 ist ein Verfahren beschrieben, bei dem ein heißer Garnstopfen in einer Stangenführung durch Durchblasen von Luft abgekühlt wird. Das Verfahren ist wenig flexibel, bei Änderung der Behandlungstemperatur oder der Fadenstärke ändert sich das Reibverhalten des Stopfens, das Temperaturprofil ist ungleichmäßig.German patent application 2,053,354 describes a method in which a hot yarn plug in a bar guide is cooled by blowing air through it. The process is not very flexible; when the treatment temperature or the thread thickness changes, the friction behavior of the plug changes and the temperature profile is uneven.

In einer in der deutschen Offenlegungsschrift 2 236 024 beschriebenen Vorrichtung wird der heiße Stopfen auf bewegte Siebe oder Bänder abgelegt. Der Stopfen wird, da er nicht seitlich geführt ist, mit einem fein verdüsten Flüssigkeitsnebel benetzt. Vor dem Aufwickeln muß der Faden getrocknet werden. Die Auflösung des Stopfens geschieht häufig nicht am Ende sondern an Schwachstellen, die nicht ausreichend gekühlt worden sind. ,In a device described in German Offenlegungsschrift 2 236 024, the hot stopper is placed on moving screens or belts. Since the stopper is not guided laterally, it is wetted with a fine atomized liquid mist. The thread must be dried before winding. The stopper is often not released at the end but at weak points that do not have been sufficiently cooled. ,

Aufgabe der Erfindung ist es, ein wirtschaftliches Verfahren zur Abkühlung eines Garnstopfens zu entwickeln, bei dem eine gleichmäßige Abkühlung des Stopfens erreicht wird und sich beim Abzug ein ruhiger Fadenlauf ergibt. Die Aufgabe wird dadurch gelöst, daß der Stopfen durch eine Kühlstrecke mit Stangenführung geschoben wird, innerhalb dieses Bereiches ein geschlossener Flüssigkeitsstrahl auf den Garnstopfen geleitet wird, und das Garn beim Abzug vom Stopfen umgelenkt wird.The object of the invention is to develop an economical method for cooling a yarn stopper, in which a uniform cooling of the stopper is achieved and when the take-off results in a smooth thread run. The object is achieved in that the plug is pushed through a cooling section with a rod guide, a closed liquid jet is directed onto the yarn plug within this area, and the yarn is deflected by the plug when it is drawn off.

Der trockene heiße Stopfen wird in der Kühlstrecke durch mindestens 3 elastische Stangen geführt und gehalten. In diesem Bereich wird er von eirien oder mehreren kalten geschlossenen Flüssigkeitsstrahlen getroffen und wirkungsvoll, gleichmäßig über den gesamten Querschnitt abgekühlt. Der aus der Kühlstrecke austretende Garnstopfen ist in seiner Struktur so einheitlich, daß beim Abzug des Fadens sich der-Faden am Ende des Stopfens ablöst und nicht der Stopfen wegen innerer Fehlstellen zerdehnt wird. Das garantiert einen ruhigen Fadenlauf. Der abgezogene, noch nasse Faden wird scharf umgelenkt, wodurch die Flüssigkeit durch Zentrifugalkräfte abgeschleudert wird; dadurch ist es nicht erforderlich, den Faden noch gesondert zu trocknen. Wegen der Stangenführung in der Kühlstrecke braucht die Flüssigkeit nicht vernebelt zu werden, sondern kann als Strahl auf den Stopfen einwirken.The dry hot stopper is guided and held in the cooling section by at least 3 elastic rods. In this area it is struck by one or several cold closed liquid jets and cooled effectively and evenly over the entire cross-section. The structure of the yarn stopper emerging from the cooling section is so uniform that when the thread is drawn off, the thread loosens at the end of the stopper and the stopper is not expanded due to internal defects. This guarantees that the thread runs smoothly. The withdrawn, still wet thread is deflected sharply, whereby the liquid is thrown off by centrifugal forces; this means that it is not necessary to dry the thread separately. Because of the rod guide in the cooling section, the liquid does not need to be atomized, but can act as a jet on the stopper.

Es ist besonders vorteilhaft, wenn der Garnstopfen durch eine Kühlstrecke mit einer Stangenführung bewegt wird, die nicht in Kontakt mit dem heißen Stauchteil steht. Es wird dadurch ein Wärmeübergang vom Stauchteil zur Kühlstrecke vermieden und das erfindungsgemäße Verfahren ist noch wirkungsvoller. Es ist erforderlich, mindestens 3 nur einseitig am Anfang der Kühlstrecke eingespannte elastische Stangen zur Führung des Stopfens in der Kühlstrecke vorzusehen. Die Stangen tragen dazu bei, das daß Aufziehen des Stopfens nur an dessen Ende erfolgt.It is particularly advantageous if the yarn plug is moved through a cooling section with a rod guide which is not in contact with the hot upsetting part. This avoids heat transfer from the upsetting part to the cooling section and the method according to the invention is even more effective. It is necessary to provide at least 3 elastic rods that are only clamped on one side at the beginning of the cooling section to guide the plug in the cooling section. The rods help to ensure that the plug is only pulled out at its end.

Es ist überraschend, daß zwischen Stauchteil und Kühlstrecke ein ungeführter Raum vorhanden sein kann; der Abstand kann bis zum 5-fachen des Stopfendurchmessers betragen, ohne das eine besondere Führung des Stopfens erforderlich ist. Es kommt bei einem solchen Abstand noch nicht zu einem Ausknicken des Stopfens beim Einlaufen in die Kühlstrecke.It is surprising that there can be an unguided space between the upset part and the cooling section; the distance can be up to 5 times the diameter of the plug without the need for special guiding of the plug. At such a distance, the plug does not buckle when entering the cooling section.

Das Verfahren ist für heute übliche, hohe Abzugsgeschwindigkeiten geeignet. Das Filamentgarn kann bei ruhigem Fadenlauf mit 2000 m/min und mehr abgezogen werden.The process is suitable for today's high take-off speeds. The filament yarn can be drawn off at 2000 m / min and more when the thread is running smoothly.

Vorteilhafterweise werden die Parameter an der Texturierdüse, beispielsweise Druck und Temperatur, so eingeregelt, daß das Ende des ungekühlten Stopfens sich in Laufrichtung, das des gekühlten Stopfens sich gegen die Laufrichtung des Fadens bewegt. Der Flüssigkeitsstrahl trifft dann immer auf das Stopfenende. Bei Parallelschaltung mehrerer Texturiervorrichtungen lassen sich so die Haltezeiten in den einzelnen Temperaturbereichen exakt gleichlang gestalten.Advantageously, the parameters on the texturing nozzle, for example pressure and temperature, are adjusted so that the end of the uncooled plug moves in the running direction and that of the cooled plug against the running direction of the thread. The liquid jet then always hits the end of the plug. When connecting several textu This means that the holding times in the individual temperature ranges can be designed to be exactly the same length.

In der Zeichnung ist beispielhaft eine Vorrichtung zur Durchführung des Verfahrens dargestellt. Das Filamentgarn 1 wird in der Texturierdüse 2 gestaucht und von Starken 3, die am Ausgang der Texturiervorrichtung befestigt sind, geführt. Es gelangt dann in die Kühlstrecke, die in diesem Fall nicht direkt mit der Texturiervorrichtunc verbunden ist. Der heiße Garnstopfen ist in dem Spalt 4 nicht geführt; es wurden dadurch keine Störungen beobachtet. Die Kühlstrecke besteht aus einer Halterung 5 an der 4 elastische Stangen 6 einseitig befestigt sind. Die fläche zwischen den Stangen 6 ist größer/gleich der Fläche des Stauchteils der Texturierdüse. Ein Flüssigkeitsstrahl 7, der aus der Düse 8 austritt, kühlt schnell und gleichmäßig den Garnstopfen ab. Die Texturiervorrichtuns ist so eingestellt, daß sich dort wo keine Flüssigkeit mehr auf den Stopfen trifft, der Stopfen aufzulösen begint. Der Faden 9 wird abgezogen, wobei er durch die Rolle 10 scharf umgelenkt wird; ein praktisch trockener Fader kann aufgewickelt werden.In the drawing, an apparatus for performing the method is shown as an example. The filament yarn 1 is compressed in the texturing nozzle 2 and guided by starches 3, which are attached to the exit of the texturing device. It then enters the cooling section, which in this case is not directly connected to the texturing device. The hot yarn plug is not guided in the gap 4; no disturbances were observed as a result. The cooling section consists of a holder 5 on which 4 elastic rods 6 are fastened on one side. The area between the rods 6 is greater than / equal to the area of the compression part of the texturing nozzle. A jet of liquid 7, which emerges from the nozzle 8, cools the yarn plug quickly and uniformly. The texturing device is set so that where there is no more liquid on the stopper, the stopper begins to dissolve. The thread 9 is drawn off, it being sharply deflected by the roller 10; a practically dry fader can be wound up.

Beispielexample

Bei der Texturierung eines Polyesterfadens von 200 dtex/ 34 f wird ein Stopfen von 4 mm Durchmesser gebildet. Vor dem Eintritt in die Kühlstrecke hat er eine Temperatur von 160°C. Das aus einer Düse mit einer 0,5 mm-Bohrung austretende Wasser kühlt den Stopfen gleichmäßig auf 70°C ab. Der Faden wird über einen Stift von 6 mm Durchmesser um 280° umgelenkt. In diesem Beispiel werden pro Stunde 3 kg Filamentgarn verarbeitet.When texturing a polyester thread of 200 dtex / 34 f, a plug of 4 mm in diameter is formed. Before entering the cooling section, it has a temperature of 160 ° C. The water emerging from a nozzle with a 0.5 mm bore cools the stopper uniformly to 70 ° C. The thread is deflected by 280 ° using a 6 mm diameter pin. In this example, 3 kg of filament yarn are processed per hour.

Claims (3)

1) Verfahren zum Abkühlen eines Garnstopfens mit einer Flüssigkeit, dadurch gekennzeichnet, daß der Stopfen durch eine Kühlstrecke mit Stangenführung geschoben, innerhalb dieses Bereiches ein geschlossener Flüssigkeitsstrahl auf den Garnstopfen geleitet und das Garn beim Abzug vom Stopfen umgelenkt wird.1) Method for cooling a yarn plug with a liquid, characterized in that the plug is pushed through a cooling section with a rod guide, a closed liquid jet is guided onto the yarn plug within this area and the yarn is deflected when the plug is drawn off. 2) Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Garnstopfen durch eine Kühlstrecke geschoben wird, die nicht mit dem Stauchteil zusammenhängt.2) Method according to claim 1, characterized in that the yarn plug is pushed through a cooling section which is not related to the upsetting part. 3) Verfahren nach Ansprüchen 1 und 2, dadurch gekennzeichnet, daß durch Regelung der Parameter an der - Stauchvorrichtung das Ende des Stopfens in den Bereich gelegt wird, wo die Flüssigkeit auf den Garnstopfen geleitet wird.3) Method according to claims 1 and 2, characterized in that the end of the plug is placed in the area where the liquid is passed onto the yarn plug by regulating the parameters on the upsetting device.
EP79100386A 1978-02-22 1979-02-12 Yarn wad cooling method Expired EP0003783B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2807490 1978-02-22
DE2807490A DE2807490C2 (en) 1978-02-22 1978-02-22 Method of cooling a yarn plug

Publications (2)

Publication Number Publication Date
EP0003783A1 true EP0003783A1 (en) 1979-09-05
EP0003783B1 EP0003783B1 (en) 1981-07-01

Family

ID=6032601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100386A Expired EP0003783B1 (en) 1978-02-22 1979-02-12 Yarn wad cooling method

Country Status (4)

Country Link
US (1) US4288893A (en)
EP (1) EP0003783B1 (en)
JP (1) JPS54125748A (en)
DE (2) DE2807490C2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241569B (en) * 1963-06-20 1967-06-01 Bancroft & Sons Co J Process for curling endless threads made of glass, quartz or a ceramic material
FR2304699A1 (en) * 1975-03-21 1976-10-15 Basf Farben & Fasern YARN TEXTURIZATION PROCESS
US4040153A (en) * 1976-04-08 1977-08-09 Phillips Petroleum Company Method and apparatus for restraining a yarn wad

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL107077C (en) * 1956-12-24
US3174208A (en) * 1959-07-16 1965-03-23 Air Reduction Process of crimping fibers derived from polyvinyl alcohol
US3007226A (en) * 1959-10-06 1961-11-07 American Cyanamid Co Method of processing a tow of filamentary material
BE599467A (en) * 1960-03-04 1961-05-16 Glanzstoff Ag Method and device for the continuous drying and fixing of crimped bands of endless synthetic threads
GB1044697A (en) * 1964-06-09 1966-10-05 Us Rubber Co Method and apparatus for texturing thermoplastic yarn
DE2053354A1 (en) * 1970-10-30 1972-05-04 Thedieck, Reiner, Dipl.-Phys., 7120Bietigheim Filament crimping - using fluid/vapour pressure on a perforated carrier surface
GB1422949A (en) * 1972-05-17 1976-01-28 Heathcoat & Co Ltd Process and apparatus for the production of bulked and crimped yarn
DE2236024A1 (en) * 1972-07-22 1974-02-07 Neumuenster Masch App DEVICE FOR ROLLING AND THEN COOLING AN ARTIFICIAL THREAD
JPS50101690A (en) * 1974-01-18 1975-08-12
JPS5414226B2 (en) * 1974-02-15 1979-06-05
US4040154A (en) * 1974-12-17 1977-08-09 Rohm And Haas Company Jet texturing process and apparatus
JPS5274081A (en) * 1975-12-16 1977-06-21 Toray Industries Apparatus for chemically treating synthetic fiber bundles
DE2631393C3 (en) * 1976-07-13 1984-09-20 Bayer Ag, 5090 Leverkusen Nozzle device for the production of textured filament yarns
US4115989A (en) * 1977-05-02 1978-09-26 E. I. Du Pont De Nemours And Company Product and process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1241569B (en) * 1963-06-20 1967-06-01 Bancroft & Sons Co J Process for curling endless threads made of glass, quartz or a ceramic material
FR2304699A1 (en) * 1975-03-21 1976-10-15 Basf Farben & Fasern YARN TEXTURIZATION PROCESS
US4040153A (en) * 1976-04-08 1977-08-09 Phillips Petroleum Company Method and apparatus for restraining a yarn wad

Also Published As

Publication number Publication date
US4288893A (en) 1981-09-15
DE2807490A1 (en) 1979-08-23
EP0003783B1 (en) 1981-07-01
JPS54125748A (en) 1979-09-29
DE2807490C2 (en) 1986-07-17
DE2960433D1 (en) 1981-10-08

Similar Documents

Publication Publication Date Title
DE1435653B1 (en) METHOD AND DEVICE FOR CONTINUOUS RUSHING OF THERMOPLASTIC FEDES
DE2903508A1 (en) METHOD AND DEVICE FOR PULLING A THREAD OF YARN
DE3433701A1 (en) METHOD AND DEVICE FOR STRETCHING HOSE GOODS
DE916457C (en) Method and device for treating threads, bundles of threads, yarns and similar materials with a liquid
DE2166684C3 (en) Use of a jet nozzle to introduce thermoplastic threads into a stuffer box
EP0003783B1 (en) Yarn wad cooling method
EP0443390A1 (en) Process for the production of an air-textured yarn
DE1660295C3 (en) Device for the production of synthetic, thermoplastic threads with fixed crimp
DE1435600A1 (en) Method for initiating a chamber crimping process and device for chamber crimping yarns with continuous individual fibers
DD233870A1 (en) METHOD AND DEVICE FOR REMOVING FLUIDS FROM RUNNING ENDLESS FAEDES
DE7831319U1 (en) DEVICE FOR CONTINUOUS SPINNING OF VISCOSE SILK
DE1660363C3 (en) Process for the uniform drawing of endless, undrawn threads made of thermoplastic, synthetic, organic polymers at high speed
DE69506415T2 (en) PRODUCTION OF A TEXTURED YARN
DE2132826A1 (en) Continuous process for thermal relaxation treatment and device for carrying out the process
DE1532142B1 (en) Device for opening a cable of thermoplastic threads for the production of cigarette filters
DE3735752C2 (en) Process for the production of plain yarn from polyamide or polyester
DE2615246A1 (en) Spinning endless filaments from molten polymers - at very high speeds with an efficient, relatively short, cooling shaft
DE1916124A1 (en) Apparatus for heat fixing of continuous multifilament
DE2559078A1 (en) METHOD FOR FORMING A PILE OF AT LEAST ONE TEXTILE YARN AND DEVICE FOR CARRYING OUT THE METHOD
DE1241569B (en) Process for curling endless threads made of glass, quartz or a ceramic material
DE1532142C (en) Device for opening a cable of thermoplastic thread for the production of cigarette filters
DE2534546B2 (en) Method and device for drawing polyester filament tows
DE2338034B2 (en) METHOD OF DRAWING ENDLESS TWO-COMPONENT ACRYLIC NITRILE YARN
DE967897C (en) Method and device for producing wool-like artificial threads
DE2017971A1 (en) Process for making a moderately elastic bulk yarn

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

17P Request for examination filed
AK Designated contracting states

Designated state(s): BE DE FR GB IT

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

REF Corresponds to:

Ref document number: 2960433

Country of ref document: DE

Date of ref document: 19811008

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ENKA AG

Effective date: 19820226

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: ENKA AG

Effective date: 19820226

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

Ref country code: FR

Payment date: 19840201

Year of fee payment: 6

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

Ref country code: BE

Payment date: 19840331

Year of fee payment: 6

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

Ref country code: DE

Payment date: 19850124

Year of fee payment: 7

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19870224

BERE Be: lapsed

Owner name: BAYER A.G.

Effective date: 19870228

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST