EP0052778A1 - Procédé et appareil pour l'apport régulier de liquides de traitement sur des matières en bandes - Google Patents

Procédé et appareil pour l'apport régulier de liquides de traitement sur des matières en bandes Download PDF

Info

Publication number
EP0052778A1
EP0052778A1 EP81108873A EP81108873A EP0052778A1 EP 0052778 A1 EP0052778 A1 EP 0052778A1 EP 81108873 A EP81108873 A EP 81108873A EP 81108873 A EP81108873 A EP 81108873A EP 0052778 A1 EP0052778 A1 EP 0052778A1
Authority
EP
European Patent Office
Prior art keywords
foam
goods
suction
application device
arrangement
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
EP81108873A
Other languages
German (de)
English (en)
Other versions
EP0052778B1 (fr
Inventor
Mathias Mitter
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.)
MITTER, MATTHIAS ERICH, JR.
Original Assignee
Mitter Matthias Erich jr
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=6117550&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0052778(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitter Matthias Erich jr filed Critical Mitter Matthias Erich jr
Priority to AT81108873T priority Critical patent/ATE12124T1/de
Publication of EP0052778A1 publication Critical patent/EP0052778A1/fr
Application granted granted Critical
Publication of EP0052778B1 publication Critical patent/EP0052778B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0088—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor
    • D06B19/0094—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor as a foam

Definitions

  • the invention relates to a method and a device for uniformly applying liquid treatment liquors to textile fabrics, such as webs of goods, the supply of the liquor to the device taking place in a foamed form thereof, with a device for foaming the liquor by movement or under.
  • Pressure which is composed of a mixing chamber designed as a foam generator with separate feeds for air or compressed air and feeds for the liquor fed from a storage container and the foam produced by means of a pipeline or the like. is transported to the application device, and devices are available for the transport of the flat structures, the foam being applied directly to the goods.
  • the foam with colored particles or other additives should only transport liquid in minimal quantities and release this liquid completely evenly into the material.
  • the present invention is therefore based on the object of ensuring a proper treatment of a material web with foam in that, on the one hand, the foam is transported deep into the material base and then the surface of the product is supplied with liquor.
  • the foam should be placed on the smallest possible area.
  • the method according to the invention thus consists in that the foam is deposited on a surface that is spatially limited on four sides and is both sucked in and pressed in.
  • This has the advantage that the liquor portion of the foam reaches deep into the base of the goods and the surface of the goods does not remain unused, but is protected from a gray haze by the pressing in of further amounts of foam. This has a particular impact on pile goods, for example carpet goods.
  • the surface structure of the web acts like a sieve, so that the foam bubbles are destroyed by this surface structure of the web, so that a liquid or respectively liquor accumulation results from bursting of the foam bubbles, which occurs over the entire Surface is completely even.
  • the strength of the vacuum is adjustable and the amount of foam to be sucked in is adjustable.
  • the amount of the liquor can thus be kept within the desired tolerance limit of 1 to 5% in relation to the desired amount of liquor to be applied per unit area.
  • the device according to the invention for carrying out the method consists in that the foam is deposited in the interior of a four-sided space, the boundary of which is an application device, e.g. is a squeegee and a suction arrangement is provided under the goods-through level and this is preferably arranged downstream of the application device in the goods run.
  • an application device e.g. is a squeegee
  • a suction arrangement is provided under the goods-through level and this is preferably arranged downstream of the application device in the goods run.
  • a further development of the inventive concept is that a feed device is provided which brings the foam into a container or the like standing above the web, the one wall of which is wholly or partly formed by the application device and a suction box with a suction arrangement under the goods execution level Suction slot is provided, and a roller doctor blade is preferably arranged downstream of this in the goods run as the application device.
  • This roller or roller doctor blade can be driven, the suction arrangement of the roller doctor blade, which is adjustable in suction strength, being directly in front.
  • Application devices such as, for example, driven roller doctor blades and suction boxes or suction bars with a suction slot, preferably extend over the total working width.
  • the suction arrangement is arranged in relation to the application device in front of this, under this or in the direction of travel behind it. This allows the suction flow to be used optimally.
  • the color space limiter which delimits the storage area, is adjustable. This allows the foam to flow down as advantageously as possible, because the liquor dissolves from the foam on the goods.
  • the foam is destroyed when the product is applied and the liquid is then available in the minimum amount evenly over the entire area, since the adjustable and adjustable suction arrangement brings about the uniformity and also determines the amount of liquid that is on the product stands. This means that the liquid gets evenly into the goods.
  • An advantage of using a vacuum is that the penetration of pure liquid into the goods is easier and more uniform than if additional mechanical resistances on the surface of the goods have to be overcome.
  • the relatively low vacuum which is controllable in its strength, removes the air from the material and thus enables the fleet to penetrate the material without resistance and evenly.
  • the additional mechanical pressing, pressing or knife application of the foam preferably by means of the roller doctor blade, which is preferably arranged after the suction or suction of the foam into the goods in the direction of travel of the goods, has the advantage of bursting any bubbles that have not burst and of remnant foam and remnants of the fleet, to scrape them free or to free them.
  • All of the devices shown are used for the uniform application of liquid treatment liquors to textile fabrics, preferably webs 1, the supply of the liquor to the device taking place in foamed form.
  • pile goods such as carpets or the like. thought, but other goods can also be dyed with this device and with this method.
  • Feeding device can be provided with a pipeline with outflow nozzles 20, which are arranged uniformly distributed over the width 'of the web.
  • the device for foaming the liquor under pressure is shown in FIG. 4 and essentially consists of a mixing chamber with separate feeds for compressed air and liquor fed from a storage container and is described later.
  • the web 1 can or will generally rest on an air-permeable printing blanket 3, which can be guided endlessly, as shown in FIG. 2.
  • a four-sided limited color space e.g. a container 5 is arranged, in which the foam is deposited, specifically by means of a feed device 2 with an outlet connection 20.
  • side boundaries 50 can be provided, which can optionally be adjusted in width in relation to one another and a front wall 55 can be provided.
  • the front wall 55 lies on the incoming goods side.
  • the suction arrangement 4 is provided with a suction slot 40, this suction arrangement 4 being provided with the suction flow via a suction pump 41.
  • the regulation takes place via a valve 141 or the like.
  • the suction pump 41 can be connected to the suction box or the suction arrangement 4 via a hose 42 (FIG. 4) or via a stationary arrangement via a pipe 42 ′.
  • the suction arrangement 4 should be adjustable in its placement, but should preferably work stationary.
  • the material web 1 lying on the printing blanket 3 thus passes under the area of the container 5 and overflows the suction arrangement 4 and then gets under the application device 6 in the case of the embodiment of FIG. 1 under the doctor blade. Cer foam is subsequently pressed into the goods after being sucked in.
  • the rear wall 52 building up over the application device 6 prevents foam from flowing over the application device on the outlet side.
  • Fig. 2 shows the schematic representation of a similar device with the arrangement of an application device 6, which is designed as a doctor blade.
  • the front wall 55 here hangs on a cross member 51, which can be fastened on both sides of the continuous material web on the machine frame in an adjustable manner, specifically in the indicated arrow directions and lockable at any distance from the application device 6.
  • the front wall 55 can be specially profiled to form a channel 53 through which the foam can flow downward as advantageously as possible.
  • the limitation of the color space is in the form of a / flow channel.
  • the rear wall 52 is supported by a sealing strip 152 on the surface of the doctor blade, whereby the seal can be readjusted.
  • the rear wall 52 hangs again on a cross-beam, which can also be supported on the machine frame on the right and left of the web passage level.
  • the suction arrangement 4 is configured similarly to the exemplary embodiment in FIG. 1.
  • FIG. 3 shows an exemplary embodiment, also with a doctor blade as application device 6, but with a fixed container 5 and suction arrangement 4 arranged underneath, which is adjustable in the arrow directions A, B; in front of the application device 6, below and behind the same.
  • the figures also show that the printing blanket 3 can be guided over rollers 30, 31. It is permeable to air and liquid.
  • the rollers can be driven discontinuously or continuously. In general, continuous motion will be preferable.
  • the air is removed from the material, namely from the textile fabric; in particular of a pile product and thus a resistance-free, uniform penetration of the foamed liquor into the material is achieved.
  • the suction device namely the suction arrangement, can also be designed as a cross-area box, it can also, as already described, be provided with the suction slot 40, which extends over the working width.
  • the effect of the suction arrangement can also be adjusted. If the goods are to be vented first, the suction slit is set further forward, i.e. In the direction of the supply of the goods, if an effect is to be exerted on the foam which is already under pressure, the suction slot 40 is placed close to the application device, for example the doctor blade 6, below the area of the wedge 60 lying in front of the doctor blade.
  • the liquor is supplied from a storage container 90 and the compressed air is supplied, for example from a compressor 91.
  • Devices for quantity measurement 290 and 291 are provided in both supply lines 190 and 191.
  • control valves are provided, only one of which is shown in the compressed air line 191, namely a control valve 92.
  • the fleet is conveyed via a pump 93, which in turn is driven by a motor 193 via a device. drives 293.
  • both air and liquor get into the mixing head 94, which has a mixing chamber 194.
  • the compressed air is introduced into an annular space 294 and reaches the mixing chamber 194 from below through openings in which there are glass balls or a granulate or something similar.
  • the foam produced then reaches the feed device 2 in a precisely adjusted mixing ratio, which in FIG. 4 only. is indicated and on the outlet 20 directly to the goods.
  • a main tap 96 can be provided in the compressed air line 191.
  • foamed application media A wide variety of chemicals can be thought of as foamed application media.
  • the application of color is thought of, for example, fabric fleets or dyes for printing and dyeing or color pastes.
  • a latex foam can also be applied or inserted as a layer.
  • the web can also are treated by the foam, for example by foamed finishing chemicals, but also washed and the like.
  • webs with a fibrous structure such as textiles of all kinds, including e.g. also carpets, pile goods, such as velvet, also nonwovens, but also felt, but also other flat products.
  • pile goods such as velvet
  • nonwovens but also felt, but also other flat products.
  • the transition from non-woven to paper is possible as long as it is permeable to air.
  • the foam can only be sucked into the surface.
  • the limited space can lie in front of any application device or can itself form the application device or be integrated into it.
EP81108873A 1980-11-26 1981-10-24 Procédé et appareil pour l'apport régulier de liquides de traitement sur des matières en bandes Expired EP0052778B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108873T ATE12124T1 (de) 1980-11-26 1981-10-24 Verfahren und vorrichtung zum gleichmaessigen auftragen von fluessigen behandlungsflotten auf textile flaechengebilde, wie warenbahnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3044408 1980-11-26
DE3044408A DE3044408C2 (de) 1980-11-26 1980-11-26 Vorrichtung zum Auftragen verschäumter Flotten auf eine textile oder faserige Fläche

Publications (2)

Publication Number Publication Date
EP0052778A1 true EP0052778A1 (fr) 1982-06-02
EP0052778B1 EP0052778B1 (fr) 1985-03-13

Family

ID=6117550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108873A Expired EP0052778B1 (fr) 1980-11-26 1981-10-24 Procédé et appareil pour l'apport régulier de liquides de traitement sur des matières en bandes

Country Status (5)

Country Link
US (2) US4440808A (fr)
EP (1) EP0052778B1 (fr)
JP (1) JPS57117669A (fr)
AT (1) ATE12124T1 (fr)
DE (1) DE3044408C2 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU557826B2 (en) * 1982-11-12 1987-01-08 Adnovum A.G. Dewatering process, procedure and device
GB8329289D0 (en) * 1983-11-02 1983-12-07 Otty M Resin impregnation method
US4644900A (en) * 1985-04-25 1987-02-24 Poterala Robert J Coating apparatus with automatic trough control and seam passage
US4767643A (en) * 1986-07-22 1988-08-30 Westinghouse Electric Corp. Method of continuously vacuum impregnating fibrous sheet material
US4761309A (en) * 1987-01-05 1988-08-02 Beloit Corporation Coating apparatus and method
US4847116A (en) * 1988-05-09 1989-07-11 Albany International Corp. Method for depositing particles and a binder system on a base fabric
US4931306A (en) * 1988-11-25 1990-06-05 Vapor Technologies Inc. High penetration deposition process and apparatus
US5753342A (en) * 1994-09-23 1998-05-19 Tredegar Industries, Inc. Vacuum assisted application of thin coatings on apertured substrates and articles produced therefrom
DE19983676T1 (de) * 1998-10-30 2002-01-31 Kimberly Clark Co Gleichförmig behandelte Faserbahnen und Verfahren zu deren Herstellung
US6383293B1 (en) * 1999-11-30 2002-05-07 Owens Corning Fiberglas Technology, Inc. Applicator for coating fibrous materials
US6503412B1 (en) 2000-08-24 2003-01-07 Kimberly-Clark Worldwide, Inc. Softening composition
US6607783B1 (en) 2000-08-24 2003-08-19 Kimberly-Clark Worldwide, Inc. Method of applying a foam composition onto a tissue and tissue products formed therefrom
AU2002228914B2 (en) 2000-11-08 2006-05-04 Kimberly-Clark Worldwide, Inc. Foam treatment of tissue products
US6582555B2 (en) 2001-11-05 2003-06-24 Kimberly-Clark Worldwide, Inc. Method of using a nozzle apparatus for the application of the foam treatment of tissue webs
US6730171B2 (en) 2001-11-05 2004-05-04 Kimberly-Clark Worldwide, Inc. Nozzle apparatus having a scraper for the application of the foam treatment of tissue webs
US6805965B2 (en) * 2001-12-21 2004-10-19 Kimberly-Clark Worldwide, Inc. Method for the application of hydrophobic chemicals to tissue webs
US6797116B2 (en) 2002-05-31 2004-09-28 Kimberly-Clark Worldwide, Inc. Method of applying a foam composition to a tissue product
US6835418B2 (en) * 2002-05-31 2004-12-28 Kimberly-Clark Worldwide, Inc. Use of gaseous streams to aid in application of foam to tissue products
US6797319B2 (en) * 2002-05-31 2004-09-28 Kimberly-Clark Worldwide, Inc. Application of foam to tissue products using a liquid permeable partition
US20040055534A1 (en) * 2002-09-19 2004-03-25 Gaston Systems, Inc. Fluid applicator for permeable substrates
US6977026B2 (en) * 2002-10-16 2005-12-20 Kimberly-Clark Worldwide, Inc. Method for applying softening compositions to a tissue product
US6761800B2 (en) 2002-10-28 2004-07-13 Kimberly-Clark Worldwide, Inc. Process for applying a liquid additive to both sides of a tissue web
US7029756B2 (en) * 2002-11-06 2006-04-18 Kimberly-Clark Worldwide, Inc. Soft tissue hydrophilic tissue products containing polysiloxane and having unique absorbent properties
US6964725B2 (en) * 2002-11-06 2005-11-15 Kimberly-Clark Worldwide, Inc. Soft tissue products containing selectively treated fibers
US6949168B2 (en) * 2002-11-27 2005-09-27 Kimberly-Clark Worldwide, Inc. Soft paper product including beneficial agents
US20040117916A1 (en) * 2002-12-23 2004-06-24 Polanco Braulio Arturo Non-destructive treatment process with uniform coverage
US7396593B2 (en) * 2003-05-19 2008-07-08 Kimberly-Clark Worldwide, Inc. Single ply tissue products surface treated with a softening agent
US20050136242A1 (en) * 2003-12-22 2005-06-23 Kimberly-Clark Worldwide, Inc. Porous substrates having one side treated at a higher concentration and methods of treating porous substrates

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1258158A (fr) * 1959-06-01 1961-04-07 Witco Chemical Company Ltd Procédé et appareil pour imprégner des matières fibreuses
FR2258486A2 (en) * 1974-01-18 1975-08-18 Hoechst Ag Woven piece goods dyeing process - uses foamed treatment fluid forced through fabric by pressure and/or suction
FR2318269A1 (fr) * 1976-07-16 1977-02-11 Aku Goodrich Chem Ind Procede d'impregnation de bandes fibreuses

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA760935A (en) * 1967-06-13 Reed Paper Group Limited Mechanically disintegrating foam coating
US1667408A (en) * 1921-11-09 1928-04-24 Duratex Corp Method and apparatus for coating fabrics
DE1075934B (de) * 1953-12-19 1960-02-18 Feldmuhle Folien Und Faserstof Verfahren und Vorrichtung zur Herstellung von Streichpapier
NL234606A (fr) * 1957-12-24
US3360415A (en) * 1963-10-21 1967-12-26 Gen Foam Corp Foam product and process
US3969780A (en) * 1972-05-04 1976-07-20 Henderson James M Continuous carpet dyeing process
DE2523062C3 (de) * 1975-05-24 1980-02-28 Hoechst Ag, 6000 Frankfurt Vorrichtung zum kontinuierlichen Auftragen einer flüssigen Behandlungsflotte in Form von Schaum auf breitgeführtes Textilgut
US4288475A (en) * 1979-10-22 1981-09-08 Meeker Brian L Method and apparatus for impregnating a fibrous web

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1258158A (fr) * 1959-06-01 1961-04-07 Witco Chemical Company Ltd Procédé et appareil pour imprégner des matières fibreuses
FR2258486A2 (en) * 1974-01-18 1975-08-18 Hoechst Ag Woven piece goods dyeing process - uses foamed treatment fluid forced through fabric by pressure and/or suction
FR2318269A1 (fr) * 1976-07-16 1977-02-11 Aku Goodrich Chem Ind Procede d'impregnation de bandes fibreuses

Also Published As

Publication number Publication date
US4497273A (en) 1985-02-05
DE3044408A1 (de) 1982-05-27
EP0052778B1 (fr) 1985-03-13
JPS57117669A (en) 1982-07-22
US4440808A (en) 1984-04-03
DE3044408C2 (de) 1984-07-19
ATE12124T1 (de) 1985-03-15

Similar Documents

Publication Publication Date Title
EP0052778B1 (fr) Procédé et appareil pour l'apport régulier de liquides de traitement sur des matières en bandes
DE3034804C2 (de) Vorrichtung zum Auftragen eines Mediums auf eine Siebschablone, insbesondere zum Drucken oder Färben
DE2300289C2 (de) Vorrichtung zum Auftragen flüssiger oder pastöser Farbe für Siebdruckmaschinen
DE3108963C2 (de) Auftragsvorrichtung zum Aufbringen von Chemikalien in verschäumter Form
EP0047907B1 (fr) Installation d'enduction de matériaux en bandes
EP0047887A1 (fr) Dispositif d'application d'un matériau (bain d'ennoblissement) à une surface au moyen d'un dispositif d'application
DE1264380B (de) Rakel mit Farbstoffbehaelter zum Bedrucken von Florware mittels Filmdruckschablonen
DE3808698A1 (de) Vorrichtung zum auftragen gasartiger, fluessiger, pastoeser, vorzugsweise verschaeumter medien auf eine auftragsebene bzw. eine laufende insbes. textile warenbahn
EP0294640A2 (fr) Machine à imprimer au pochoir
DE3137763A1 (de) "siebzylinder zur aufbringung von fluessigkeiten enthaltenden auftragsmassen auf flaechige waren, z.b. warenbahnen od.dgl."
DE3034802A1 (de) Verfahren und vorrichtung zum gleichmaessigen auftragen von fluessigen behandlungsflotten auf textile flaechengebilde
DE3127469A1 (de) Vorrichtung zum auftragen von fluessigen, verschaeumten oder pastoesen medien auf eine warenbahn
DE3200171C2 (de) Vorrichtung zum Auftragen eines vorzugsweise mit Farbstoff versehenen Auftragsmediums auf eine flächige Ware
DE3034803C2 (de) Anwendung des Siebdruckverfahrens bzw. einer Siebdruckvorrichtung
EP0049362A1 (fr) Dispositif d'alimentation pour l'apport d'un matériau de revêtement à une surface, le matériau de revêtement étant placé en face d'un dispositif d'application
DE3226904A1 (de) Auftragsvorrichtung
DE3137794C2 (de) Vorrichtung zum kontinuierlichen Auftragen einer Kleinstmenge an Flüssigkeit auf eine Materialbahn
DE3150936A1 (de) Vorrichtung zum zufuehren von schaum zu einem abnehmer, z.b. einer auftragsstation
DE3112160A1 (de) Maschine zum auftragen von chemikalien auf faserige flaechengebilde, insbesondere textile warenbahnen
EP0048348A1 (fr) Procédé et installation d'enduction uniforme de matériaux en bandes par des liquides, des bains ou des pâtes
DE2054278A1 (de) Walzenbeschichter
DE3524127A1 (de) Auftragsvorrichtung bzw. schlitzrakel zum kontinuierlichen auftragen eines verschaeumten, pastoesen oder trockenen auftragsmediums
DE3228904C2 (de) Als Schlitzrakel ausgebildete Auftragsvorrichtung für rotierende Schablonen
DE3218095A1 (de) Auftragsvorrichtung zum auftragen von fluessigen, pastoesen oder verschaeumten medien auf flaechige waren
EP0101593A1 (fr) Générateur de mousse entraîné par rotation

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): AT CH FR GB IT LI NL

17P Request for examination filed

Effective date: 19821018

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH FR GB IT LI NL

REF Corresponds to:

Ref document number: 12124

Country of ref document: AT

Date of ref document: 19850315

Kind code of ref document: T

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: MITTER, MATTHIAS ERICH, JR.

Owner name: MITTER, MATHIAS

RIN2 Information on inventor provided after grant (corrected)

Free format text: MITTER MATHIAS

ET Fr: translation filed
NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: MATHIAS MITTER TE SCHLOSS HOLTE EN MATTHIAS ERICH

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

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

Ref country code: NL

Payment date: 19861031

Year of fee payment: 6

Ref country code: AT

Payment date: 19861031

Year of fee payment: 6

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19871024

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

Ref country code: LI

Effective date: 19871031

Ref country code: CH

Effective date: 19871031

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

Ref country code: NL

Effective date: 19880501

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
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: 19880630

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19881118