EP0217743A1 - Unité de filtre pour cigarette et procédé pour sa fabrication - Google Patents

Unité de filtre pour cigarette et procédé pour sa fabrication Download PDF

Info

Publication number
EP0217743A1
EP0217743A1 EP86810378A EP86810378A EP0217743A1 EP 0217743 A1 EP0217743 A1 EP 0217743A1 EP 86810378 A EP86810378 A EP 86810378A EP 86810378 A EP86810378 A EP 86810378A EP 0217743 A1 EP0217743 A1 EP 0217743A1
Authority
EP
European Patent Office
Prior art keywords
filter unit
cigarette filter
unit according
partition
cigarette
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
EP86810378A
Other languages
German (de)
English (en)
Other versions
EP0217743B1 (fr
Inventor
Alois Kupper
Serge Veluz
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.)
Baumgartner Papiers SA
Original Assignee
Baumgartner Papiers 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 Baumgartner Papiers SA filed Critical Baumgartner Papiers SA
Priority to AT86810378T priority Critical patent/ATE58821T1/de
Publication of EP0217743A1 publication Critical patent/EP0217743A1/fr
Application granted granted Critical
Publication of EP0217743B1 publication Critical patent/EP0217743B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0283—Manufacture of tobacco smoke filters for filters with special features with means for a non-axial smoke flow
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure

Definitions

  • the invention relates to a cigarette filter unit within which sections of different designs are arranged alternately in succession and surrounded by an enveloping strip, and to a method for producing this cigarette filter unit.
  • the object of the present invention is to provide a cigarette filter unit which, in combination with a tobacco part attached to it, does not have these disadvantages or only has them to a much lesser extent when the latter is smoked, i.e. with the aid of which a more constant or even decreasing amount of condensate per train of the smoker the filter cigarette is reached.
  • this object is achieved according to the invention in that between two filter elements which are axially aligned with one another elements in the flow cross-section of the filter unit, at least one partition having at least two areas with different porosity and consisting of smoke, preferably filtering material, is arranged.
  • a partition is arranged, which extends transversely to the flow direction of the filter unit, is provided with at least two areas with different porosity, and consists of material that filters tobacco smoke. Further advantageous developments of this training are the subject of claims 13 to 15.
  • the present invention furthermore relates to a method for producing a cigarette filter unit according to the invention, which is characterized in that a sequence of filter elements which are uniformly spaced from one another is enveloped over part of their circumference by means of at least one continuously supplied first porous enveloping strip and connected to this first enveloping strip, then completely covers the remaining uncovered surface area of the strand formed in this way by means of at least one continuously supplied second envelope strip, which has a different porosity than the first envelope strip, and connects the latter along its two side edges to the first envelope strip, then the tube formed in this way by the two envelope strips at least one point between two filter elements completely constricted or clamped together, the clamping point glued, and the d formed rod-shaped unit containing the spaced-apart filter elements completely encased by means of at least one wrapping strip.
  • the filter elements 1 consisting of cellulose or acetate are moved forward in a known manner in the direction of arrow 2 by means of a conventional transport and spacing device, not shown, which aligns the filter elements 1 alternately axially with one another moved and at the same distance from brought each other.
  • the uniformly spaced and axially aligned filter elements 1 are continuously fed to a likewise continuously supplied porous envelope strip 3, placed thereon and guided in the lateral direction through guide parts, not shown, and synchronously through a likewise not shown, arranged above the envelope strip 3 this circumferential pressure band held in their relative position to each other and moved forward together with the enveloping strip 3.
  • the envelope strip 3 is on its side facing the filter elements 1 with a heat-softenable adhesive, which e.g. was previously applied to the enveloping strip 3 by means of an adhesive application device 4 in strips 5 and 6, so that it is possible to attach the individual filter elements 1 to the enveloping strip 3 immediately after their transfer to the enveloping strip 3 with the aid of a heating element (FIG. 1, Place A) and thus a relative shift against each other, i.e. a change in their distance from each other, is impossible (Fig. 2).
  • the wider adhesive strips 5 are used to attach the filter elements 1 to the enveloping strip 3 and the narrower adhesive strips 6 are used to fix the constriction (FIG. 1, point D) of the sheathing tube 7 that will occur later.
  • the wrapping strip 3 After the individual filter elements 1 have been attached to the porous wrapping strip 3, the latter is passed onto an endless conveyor belt and then these parts come together into a two-part shaping unit (not shown) (FIG. 1, point B), where the wrapping strip 3 bis- during its forward movement. is placed on a slot 8 of approximately 4 to 6 mm around the filter elements 1 having a circumference of 25 mm.
  • This structure is then transported tape to completely glue the envelope strip 3 to the filter elements 1 and to precisely fix the filter diameter first under a second heating element covering the upper half of the strand and immediately thereafter under a second cooling element also covering the upper half of the strand, as for example from the DE-PS.25 55 129 is best known.
  • a closure strip 9 which has a substantially greater porosity than the enveloping strip 3 and whose width is slightly larger than the width of the slot 8, is fed in, placed over the slot 8 (FIG. 1, point C) and by means of a heatable one Element glued to the exposed surface of the filter elements 1 and the side edges of the enveloping strip 3 by softening the thermoplastic coating of the sealing strip 9.
  • the strand provided with the heated closure strip 9 is passed under a water-cooled cooling part, where the softened thermoplastic coating of the closure strip 9 solidifies.
  • a clamping arrangement 10 (FIG. 1, point D), where the encasing tube formed from the two strips 3 and 9 is spaced between two successive and spaced apart Filter elements 1, as can be seen in particular from FIGS. 4 and 5, are pressed together and constricted, so that two cone-shaped tube sections 11 and 12 are formed, the cone surface of which are two regions of different porosity, corresponding to the two strips 3 and ' 9 , having.
  • the clamping jaws of the clamping arrangement 10 are designed to be heated, so that the clamping points 13 of the tube 3,9 fi be fixed.
  • the rod-shaped unit formed in this way which contains the spaced-apart filter elements 1 and the constricted tube sections, is then completely encased in a known manner by means of a porous or non-porous encapsulation strip 14 (FIG. 1, point E; FIG. 4), the latter glued and so continuously formed strand is fed to a separating device, where it is divided such that the length of each filter rod is, as usual, four or six times the length of a single filter intended for a cigarette (FIG. 6).
  • the ring formed between the two tapered tube sections 11 and 12 and the wrapping strip 14 shaped chamber 15 can, for example, as known from DE-PS 25 55 129, be filled with free-flowing filter material.
  • the reinforcing ribs 17 (FIGS. 5 and 7a) which are formed at the same time when the pipe 3,9 is constricted by means of the clamping arrangement 10 form an advantageous reinforcement of the strand thus formed for its further processing and for the finished filter.
  • FIG. 7b shows a section through a finished filter according to FIG. 6.
  • FIGS. 8a and 9a two other constriction variants are shown in perspective analogous to FIG. 7a, and in FIGS. 8b and 9b the sections through the corresponding finished filter units, analogous to FIG. 7b.
  • FIG. 10 and 11 show two further constriction variants, in which the constriction according to FIG. 10a or 11a is carried out directly adjacent to the end face of one of the filter elements 1, so that a filter length L is only ever one through the pipe 3,9 formed conical chamber 12 ', whereas the embodiment shown in Fig. 5 has two such chambers 11,12.
  • a spacing element 18 is arranged between the spaced-apart filter elements 1, lying against the mutually facing end faces of the latter, which is shown in perspective on an enlarged scale in FIG. 13.
  • the gas-impermeable spacer element 18 is provided over part of its length with an annular fastening region 19 whose diameter F is less than the inner diameter G of the outer casing 14 and the casing tube 3,9 sealingly connected to the entire circumference of this fastening area 19. Furthermore, the spacing element 18 is provided with its support ribs 21 extending in the radial direction in order to center it in the interior of the casing tube 3, 9 and at the same time to form flow channels 20.
  • the sheathing tube is formed from a single porous strip, and that the spacer 18 is made of gas-permeable material and the flow resistance of the latter is different from that of the material of the sheathing tube 3. If the flow resistance If the latter was lower than that of the spacer element 18, then the smoke to be filtered first flows from the tobacco-side filter element 1 via the frustoconical jacket surface 11 from the inside to the outside into the annular space 15 and from there via the frustoconical jacket surface 12 from the outside to the inside and then through the mouth-side filter element 1. With increasing blockage of the frustoconical jacket surfaces 11 and 12 by flue gas components filtered out, the flue gas stream to be filtered runs more and more through the spacer element 18, which has a higher flow resistance.
  • the spacing element 18 is made of gas-impermeable material, it is provided in its longitudinal direction with one or more very thin passage bores 22 with a diameter of approximately 1/100 mm diameter.
  • a partition wall 23 which extends transversely to the flow direction of the filter unit, is clamped between two successive filter elements 1 and is provided with two areas with different porosity and made of material that filters tobacco smoke.
  • the partition 23 is formed by a paper tape 24 which has two regions 25 and 26 of different porosity running parallel to one another in its longitudinal direction or is composed of two different strips.
  • the paper tape 24 formed in this way is, as can be seen in particular from FIGS. 16 and 17, alternately first along the outer side 27 of the one filter element 1, then across the end face 28 thereof, and then send placed along the opposite outside 29 of the subsequent filter element 1, then pulled the whole thing through a calibration opening 30 and then completely covered and glued by means of a wrapping strip 14.
  • the strand thus formed is fed to a separating device, as in the previously described embodiments, where it is divided in such a way that the length of each filter structure is four or six times the length of a single filter intended for a cigarette.
  • the length of a single filter can be, for example, L, 2L, 3L, etc.
  • the strip 24 in only one porosity, but when using such a strip it is not possible to keep the flow resistance in the filter approximately constant when smoking a part of the tobacco connected to the latter.
  • FIGS. 18 and 19 each show a top view of a detail from two different fabric tapes that can be used to form the one partition wall area and are made of polymer threads, that is to say in FIGS. 1 to 4 and 14, e.g. the closure strip 9 and in FIGS. 15 to 17 the strip 25 consist of such a fabric tape.
  • the fabric tape 9 'used for example in FIG. 1 to form a partition wall area 9 and shown in FIG. 18 is not intended in the finished cigarette filter unit to: Filter out aerosols from a flue gas stream flowing through them.
  • the filtering capacity of the fabric belt 9 'for the particular phase of the flue gas stream flowing through is measurable, but in practice it is rather negligible; the fabric band part 9 primarily performs the function of a switching element on the finished filter.
  • the thickness of the fabric band 9 'must be very small, so that the first partition area formed therefrom causes a relatively small initial flow resistance when the finished filter is used.
  • the effect of the fabric 9 'forming the first partition area 9 is such that when a flue gas aerosol flows through the latter, a very small proportion of the aerosol particles remain adhered to the fabric 9', but this proportion is sufficiently large to be noticeable Reduction of the free cross sections of the fabric band openings and thereby a strong increase in the flow resistance caused by the fabric 9 'loaded in this way.
  • the fabric 9 'must not consist of a material in which the spatial distribution of the flue gas passage openings as well as their passage cross sections and cross-sectional shapes is random.
  • Ventilation openings 32 are provided, seen in the flow direction T of the filter unit, after the partition walls 11 and 12 between the inside and the outside of the filter unit.
  • the latter are provided in such a number and with such cross sections that, for example, an initial dilution of 50% of the tobacco smoke extracted from the tobacco part 33 is achieved.
  • a provided with a such as seen in FIG 20 cigarette filter cigarette smoke then flows in the first train of the smoker in this inflamed Z igarette the tobacco smoke stream with a relatively small, by the fabric strip 9 of the partition walls 11 and 12 caused initial pressure drop of, for example, 30 mm WS through these fabric sections, whereby aerosol particles in tobacco smoke adhere to these fabric sections of the partition walls 11 and 12, and increasingly reduce the free cross section of the individual fabric openings through which smoke travels on the suction side of the filter unit, and thus the through Tissue sections of the partition walls 11 and 12 increasingly increase the pressure drop caused, so that, seen over the period of smoking of the tobacco part 33, with increasing blockage of the tissue sections through which smoke flows through smoke aerosol particles, the smoke sucked in by the smoker increases via the ventilation openings 32 more and more air is added.
  • the enveloping strip 3 used in the exemplary embodiment shown in FIG. 20 can consist of air-permeable material or of material that is practically air-impermeable for the smoker.
  • the partition walls 11 and 12 must in any case be provided with a plurality of overflow openings 31.
  • the cross sections of the latter are to be dimensioned such that they are at least ten times larger than the largest openings of the fabric section 9 'forming the second partition area. Such a design allows the maintenance of a minimal flue gas flow even when the tissue areas 9 are almost or completely blocked.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP86810378A 1985-08-26 1986-08-25 Unité de filtre pour cigarette et procédé pour sa fabrication Expired - Lifetime EP0217743B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86810378T ATE58821T1 (de) 1985-08-26 1986-08-25 Zigarettenfiltereinheit und verfahren zu deren herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3665/85 1985-08-26
CH3665/85A CH669309A5 (fr) 1985-08-26 1985-08-26

Publications (2)

Publication Number Publication Date
EP0217743A1 true EP0217743A1 (fr) 1987-04-08
EP0217743B1 EP0217743B1 (fr) 1990-12-05

Family

ID=4260872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810378A Expired - Lifetime EP0217743B1 (fr) 1985-08-26 1986-08-25 Unité de filtre pour cigarette et procédé pour sa fabrication

Country Status (7)

Country Link
US (1) US4791943A (fr)
EP (1) EP0217743B1 (fr)
JP (1) JPS6248369A (fr)
AT (1) ATE58821T1 (fr)
CA (1) CA1255990A (fr)
CH (1) CH669309A5 (fr)
DE (1) DE3676031D1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727839B2 (ja) * 1988-12-14 1995-03-29 株式会社トーキン 複合体積層磁器コンデンサ
JPH0752698B2 (ja) * 1989-01-20 1995-06-05 太陽誘電株式会社 積層セラミックコンデンサの製造方法
GB0426615D0 (en) * 2004-12-03 2005-01-05 Filtrona Suisse Sa Tobacco smoke filter
CN101442917B (zh) 2006-03-28 2012-08-01 菲利普莫里斯生产公司 具有限流件的发烟制品
US20080047571A1 (en) * 2006-07-12 2008-02-28 Philip Morris Usa Inc. Smoking article with plate impactor
US8353298B2 (en) 2006-07-12 2013-01-15 Philip Morris Usa Inc. Smoking article with impaction filter segment
US7874296B1 (en) * 2006-07-26 2011-01-25 Mohammad Said Saidi Cigarette gas filter
US8424539B2 (en) * 2006-08-08 2013-04-23 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
TW200911138A (en) 2007-03-09 2009-03-16 Philip Morris Prod Smoking articles with restrictor and aerosol former
TW200900014A (en) 2007-03-09 2009-01-01 Philip Morris Prod Smoking article filter with annular restrictor and downstream ventilation
TW200911141A (en) 2007-03-09 2009-03-16 Philip Morris Prod Super recessed filter cigarette restrictor
EP2253231A1 (fr) * 2009-05-18 2010-11-24 Philip Morris Products S.A. Article à fumer avec élément de restriction de flux amélioré
US8424540B2 (en) 2009-10-09 2013-04-23 Philip Morris Usa Inc. Smoking article with valved restrictor
TW201204272A (en) 2010-03-26 2012-02-01 Philip Morris Prod Smoking articles with significantly reduced gas vapor phase smoking constituents
PL223115B1 (pl) * 2013-02-15 2016-10-31 Int Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Sposób, mechanizm i urządzenie do chwilowego kompresowania materiału filtracyjnego
GB201321920D0 (en) * 2013-12-11 2014-01-22 British American Tobacco Co A method and apparatus for inserting elongate elements into a sleeve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008066A1 (fr) * 1968-05-08 1970-01-16 Cigarette Components Ltd
US3648711A (en) * 1970-08-11 1972-03-14 American Filtrona Corp Tobacco smoke filter
US3779849A (en) * 1971-08-13 1973-12-18 Reynolds Tobacco Co R Apparatus and method for manufacturing jet impingement type filters for smoking articles
US3805682A (en) * 1970-12-24 1974-04-23 American Filtrona Corp Method of making tobacco smoke filters
DE2555129A1 (de) * 1975-12-08 1977-06-23 Baumgartner Papiers Sa Verfahren zur herstellung einer zigarettenfiltereinheit, einrichtung zur durchfuehrung des verfahrens, nach dem verfahren hergestellte zigarettenfiltereinheit und verwendung der gemaess dem verfahren hergestellten zigarettenfiltereinheit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368566A (en) * 1964-06-17 1968-02-13 Souren Z. Avediklan Filter cigarette
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2008066A1 (fr) * 1968-05-08 1970-01-16 Cigarette Components Ltd
US3648711A (en) * 1970-08-11 1972-03-14 American Filtrona Corp Tobacco smoke filter
US3805682A (en) * 1970-12-24 1974-04-23 American Filtrona Corp Method of making tobacco smoke filters
US3779849A (en) * 1971-08-13 1973-12-18 Reynolds Tobacco Co R Apparatus and method for manufacturing jet impingement type filters for smoking articles
DE2555129A1 (de) * 1975-12-08 1977-06-23 Baumgartner Papiers Sa Verfahren zur herstellung einer zigarettenfiltereinheit, einrichtung zur durchfuehrung des verfahrens, nach dem verfahren hergestellte zigarettenfiltereinheit und verwendung der gemaess dem verfahren hergestellten zigarettenfiltereinheit

Also Published As

Publication number Publication date
JPS6248369A (ja) 1987-03-03
EP0217743B1 (fr) 1990-12-05
US4791943A (en) 1988-12-20
CH669309A5 (fr) 1989-03-15
CA1255990A (fr) 1989-06-20
ATE58821T1 (de) 1990-12-15
DE3676031D1 (de) 1991-01-17

Similar Documents

Publication Publication Date Title
EP0217743B1 (fr) Unité de filtre pour cigarette et procédé pour sa fabrication
DE3116052C2 (fr)
AT400997B (de) Filter mit teilchenförmigem additiv und seine verwendung
AT398884B (de) Tabakrauchfilter und verfahren zu seiner herstellung
DE3539938C2 (fr)
DE2558004C3 (de) Celluloseacetatfäden enthaltende Zigarettenfilter, Verfahren und Vorrichtung zu deren Herstellung
DE3121170C2 (de) Tabakrauchfilter
DE4234482B4 (de) Verfahren zum Herstellen von Tabakrauchfilterelementen, Tabakrauchfilter, Filterzigarette und Mehrfachlängenstab mit einer Mehrzahl von Tabakrauchfiltern
DE2062543A1 (de) Tabakrauchfilter und Verfahren zu dessen Herstellung
DE4030316B4 (de) Filter mit teilchenförmigem Sorptionsmittel
DE3875577T2 (de) Filterstangen fuer zigaretten und zigaretten mit solchen filterstangen.
DE1901120B2 (de) Zusammengesetztes Zigarettenmundstück sowie Verfahren und Vorrichtung zu dessen Herstellung
AT392571B (de) Filter fuer eine zigarette
AT390718B (de) Verbesserter zigarettenfilter
DE1930435B2 (de) Verfahren und vorrichtung zum herstellen eines filterstabes fuer zigaretten oder dergleichen
DE2755720A1 (de) Tabakrauchfilter
DE3311902C3 (de) Filtermundstück für Zigaretten
DE2802576C2 (de) Verfahren zur Herstellung von stabförmigen Elementen sowie Vorrichtung zur Durchführung des Verfahrens
DE2509121A1 (de) Verfahren und maschine zur behandlung eines stranges bei der herstellung von tabakrauchfiltern mit darin befindlichem teilchenmaterial
DE3640883A1 (de) Verfahren und vorrichtungen zum herstellen von tabakrauchfilterstaeben
DE3225071C2 (de) Ventiliertes Zigarettenfilter
DE3304764C2 (fr)
DE2745028A1 (de) Filter fuer tabakrauchwaren
DE3601960C2 (fr)
DE69512791T2 (de) Filter mit konzentrischen kern

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: A1

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

17P Request for examination filed

Effective date: 19870503

17Q First examination report despatched

Effective date: 19880829

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 58821

Country of ref document: AT

Date of ref document: 19901215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3676031

Country of ref document: DE

Date of ref document: 19910117

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed
ET Fr: translation filed
ITTA It: last paid annual fee
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940429

Year of fee payment: 9

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

Ref country code: BE

Payment date: 19940516

Year of fee payment: 9

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

Ref country code: AT

Payment date: 19940810

Year of fee payment: 9

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

Ref country code: GB

Payment date: 19940816

Year of fee payment: 9

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

Ref country code: SE

Payment date: 19940831

Year of fee payment: 9

Ref country code: NL

Payment date: 19940831

Year of fee payment: 9

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

Ref country code: DE

Payment date: 19940929

Year of fee payment: 9

EAL Se: european patent in force in sweden

Ref document number: 86810378.9

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

Ref country code: GB

Effective date: 19950825

Ref country code: AT

Effective date: 19950825

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

Ref country code: SE

Effective date: 19950826

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

Ref country code: BE

Effective date: 19950831

BERE Be: lapsed

Owner name: S.A. BAUMGARTNER PAPIERS

Effective date: 19950831

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

Ref country code: NL

Effective date: 19960301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950825

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

Ref country code: FR

Effective date: 19960430

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

Effective date: 19960301

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

Ref country code: DE

Effective date: 19960501

EUG Se: european patent has lapsed

Ref document number: 86810378.9

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: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050825