EP0874923B1 - Verfahren und vorrichtung zum nassspinnen, verstecken und aufwickeln eines multifilen fadens - Google Patents
Verfahren und vorrichtung zum nassspinnen, verstecken und aufwickeln eines multifilen fadens Download PDFInfo
- Publication number
- EP0874923B1 EP0874923B1 EP97933645A EP97933645A EP0874923B1 EP 0874923 B1 EP0874923 B1 EP 0874923B1 EP 97933645 A EP97933645 A EP 97933645A EP 97933645 A EP97933645 A EP 97933645A EP 0874923 B1 EP0874923 B1 EP 0874923B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filaments
- drying
- swirling
- godet
- process according
- 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 - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
-
- 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
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
- D02G1/164—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam in the presence of a liquid, e.g. a crimp finish
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
Definitions
- the present invention relates to a method and an apparatus for wet spinning, drawing and winding a multifilament Thread, in particular a viscose thread.
- a multifilament viscose thread arises from the fact that liquid viscose in contact with a spin bath liquid brought.
- the spin bath liquid for example, can be act as a sulfuric acid bath.
- the sulfuric acid bath can contain salts be added, which are, for example, sodium sulfate, zinc sulfate or magnesium sulphate.
- the filaments are made from the Spinning bath liquid drawn off and stretched. The filaments must then of chemical residues.
- the cleaning process can be carried out by a water treatment, a Desulphurization treatment or bleaching treatment.
- the so treated filaments are then dried and after a Oil application promoted to a winding device.
- the filaments are twisted and wound into a bobbin.
- Such a process for Continuous production of a multifilament thread is described in DE 39 30 652 A1 known. With such a procedure, however, only Bobbins with a small amount of thread. Larger thread quantities on a spool can be achieved in that the filaments in shape of a smooth thread. The further processing of such Smooth threading is relatively difficult, since there is none between the individual filaments Thread closure is given.
- Devices for producing a multifilament thread which are in two types can be divided.
- the filaments are looped around a pair of rollers.
- the Rollers are inclined to each other so that the filaments extend in the axial direction move from one side of the machine to the other. During this Movement of the filaments on the rollers becomes a cleaning filament subjected.
- the filaments are then on the same rollers dried. Before cleaning, the filaments can be stretched be subjected. The drawn, cleaned and dried filaments are then twisted and wound into a bobbin.
- the device for the continuous production of a multifilament thread a spinning device, a drawing device for Stretching the filaments, a cleaning device for cleaning the Filaments, a drying device for drying the filaments, a of twisting device and a winding device.
- the present invention is based on the object Method and device for wet spinning, drawing and winding a multifilament thread, in particular a viscose thread, through which a thread is provided which leads to another Processing is suitable.
- a thread-forming material by at least one
- a plurality of spinnerets having nozzle openings for forming Filaments are introduced into a spin bath liquid.
- the filaments are withdrawn from the spinning bath liquid and a stretching process, one Cleaning and drying.
- the filaments are in more or less irregular distances with each other at so-called fixed points devoured. These fixed points give the filaments a for processing sufficient cohesion.
- a multifilament thread, which consists of intermingled filaments can, for example a bobbin are wound up, such a bobbin approx triple amount of yarn can take up than a conventional bobbin twisted thread.
- the filaments be swirled after drying.
- the filaments after drying but in front of a delivery plant through which the multifile Thread is fed to a winding process, swirled.
- This can a tradition can be set that the opening of the filament bundle causes and thus leads to an intense and stable loop structure.
- the Filaments go through a first and a second drying process.
- the filaments are between the first and the second drying process swirled.
- the first drying process, the swirling and the The second drying process is preferably carried out directly one after the other. This measure intensifies the entire drying process and accelerated.
- the thread can be interposed Turbulence relieve internal tensions, which translates into less Shrinkage affects in further processing.
- the filaments are preferably dried on a first section a drying godet. After the filaments the first section have run over a drying godet, they become a vortex subjected.
- the filaments are intermingled in a tangle nozzle, with a cold or hot medium, preferably compressed air, is operated. After the filaments have been interlaced, the multifile Thread that emerges from the tangle nozzle onto a second section of the Drying godet passed and fed to a final drying of the thread.
- the Sections of the drying godet have different diameters, see above that there is a tradition of the thread between the sections.
- a Wet interlacing of the filaments is proposed.
- the swirling takes place here the filaments after cleaning and before drying them.
- the filaments are still on the washing godet with a Lubricant treated.
- the vortexing before drying or final drying has the advantage that the multifilament can shrink better due to its crimp and thus has less shrinkage in the finishing process.
- This A variant of the method can also already be used by using hot air The filaments dry out.
- the use of hot air leads already to a shrinking, since the removal of the water is a Structural change and thus a partial reduction of tensions.
- the device according to the invention for the continuous production of a multifilament thread, in particular a viscose thread, with a spinning device with at least one having a plurality of nozzle openings Spinning nozzle, through the thread-forming material to form filaments in a spinning bath liquid is introduced, a stretching device for Stretching the filaments, a cleaning device for cleaning the Filaments, a drying device for drying the filaments and
- a winding device is characterized in that a swirling device is provided through which the filaments become a multifilament Thread to be swirled.
- the swirling device is in front of the winding device arranged so that a multifiler substantially smoother Thread to form a bobbin, in particular a cheese can, which compared to the conventionally manufactured coils one up to three times the amount of a thread.
- the intermingling device viewed in the running direction of the filaments, is arranged after the drying unit.
- the swirling device is preferably trained in front of a delivery plant to set a lead to be able to, without influencing the subsequent winding device.
- the device has a preparation device that the swirling device is upstream or downstream.
- the drying device have a first and a second Has drying unit and the filaments before the second drying unit pass through the swirling device.
- the drying facility preferably has a drying godet.
- An embodiment is preferred the drying device in which the first and the second drying unit each by a first or a second section of a Drying godets are formed, the diameter of the first section the drying godet is larger than the diameter of the second Section of the drying godet.
- the filaments are exited the first section of the drying godet through the swirling device out and then to the smaller diameter version second section of the drying godet passed. This will be a Length compensation ensured, which is caused by the swirling of the yarn.
- the device has a Interlacing device, viewed in the direction of the filaments, is subordinate to the cleaning device.
- the vortex after the Cleaning device and in front of the drying device has the advantage that the multifilament thread is less in the further processing Is subject to shrinkage.
- the Device is designed such that the swirling device is a treatment device is connected upstream through the filaments with a lubricant be treated.
- the lubricant improves the detachment of filaments from godets, in particular from a drying godet.
- the cleaning and treatment device form here preferably a unit.
- the cleaning device comprises at least a washing godet.
- the treatment facility is at a distance from the jacket the wash godet arranged.
- the Swirling device at least one, preferably with a cold or hot compressed air operated, tangel nozzle.
- FIG. 1 shows a first exemplary embodiment of a device for Making a multifilament thread shown. This device acts it is an example of the production of a viscose thread after known tube spinning process.
- a liquid viscose is converted from a storage container 1 via a feed line 2 fed to a spinning device 3.
- the spinning device 3 has at least a spinneret having a plurality of nozzle openings, through which the thread-forming viscose is passed to form filaments 10 becomes.
- the liquid viscose emerges from the spinneret, not shown in a spinning tube 4.
- a spinning bath liquid also called coagulation liquid.
- the supply of the spinning tube 4 with the coagulation liquid is carried out by a pump 9, which in a line 8 is arranged.
- Line 8 connects the spinning device 3 with a collection container for the coagulation liquid.
- the one from the Spinning tube 4 emerging coagulation liquid is in a collecting container 5 collected and fed to the collecting container 6 via a line 7.
- the emerging from the spinning tube 4 viscose filament 10 are via a Stretching device 11 out.
- the stretching device 11 consists of two coagulation godets 34 and 35, from the filament bundle 10 several times are embraced.
- the coagulation godets 34 and 35 are by means of the Drive device 36 driven.
- the Cleaning device 12 comprises a washing godet duo 15.
- the washing godet duo 15 is connected on one side to a drive 37.
- On the surface of the washing godet duo 15 is continuously a cleaning agent, for example Water, applied.
- the filament bundle 10 is used for washing performed several times over the godet duo 15.
- the drying godet 16 is one Drive 38 driven.
- the thread 10 is removed from the drying godet 16 by the delivery mechanism 22 withdrawn and led to a winding device 32.
- the thread 10 is then by means of a traversing device, not shown here moved back and forth within a traverse stroke and on one Coil 14 wound.
- the coil 14 is on a spindle 41, which by the Spindle drive 39 is driven, formed.
- a swirling device is located between the washing godet 15 and the drying godet 16 17 arranged, which comprises a tangel nozzle 18.
- the Tangel nozzle 18 is operated by means of cold or hot compressed air 19.
- the Filaments 10 drawn off from the washing godet 15 pass through the tangle nozzle 18 in which they are swirled.
- the thread 10 is inside the Tangel nozzle through a channel.
- the compressed air 19 flows then in the channel of the tangel nozzle 18. This causes swirling the filaments of the filament bundle 10, and entanglement occurs of the individual filaments.
- the swirling device 17 is operated with hot air. Both the Drying effect of the hot air and the warming of the Filaments and the resulting tension shrinkage process be used to advantage.
- a treatment device 33 is immediately in the Area of the thread run from the washing godet duo 15 arranged.
- FIG. 2 shows part of the device according to the invention for continuous Manufacture of a multifilament thread 10 shown.
- the filament bundle 10 passes through a drying device 13.
- the drying device 13 consists of the two godets 16.1 and 16.2. Of the Drying device 13 it passes through a tangel nozzle 18, the one Has inlet channel 21 through which the filament bundle 10 runs.
- Inlet channel 21 opens out transversely to inlet channel 21 in the direction of thread travel aligned compressed air connection 42, through the compressed air 19 into the tangel nozzle is introduced.
- the filaments 10 are so whirls that this has sufficient cohesion for further processing receive.
- the multifilament thread 10 through the thread closure the filaments 10 leaves the tangle nozzle 18 is fed by a delivery mechanism 22 withdrawn and fed to a winding device, not shown, through the one coil 14, as shown in FIG. 1, is wound up.
- FIG. 3 shows a special embodiment of the drying device.
- the drying device 13 comprises a drying godet 16 and one Spacer roller 23.
- the drying device 13 has a first and a second drying unit 24, 25.
- the first drying unit 24 is through a first section 26 of the drying godet 16 and a first Section 27 of the spacer roller 23 is formed.
- the second drying unit 25 is by a second section 28 of the drying godet 16 and a second section 29 of the spacer roller 23 is formed.
- the diameter of the first section 26, 27 of the drying godet 16 or the spacer roller 23 is larger than the diameter of the second section 28, 29 of the Drying godet 16 or the deflecting rollers 23.
- the thread 10 runs through first the first drying unit 24 and then the second drying unit 25.
- the thread wraps around the drying godet 16 and Deflection roller several times. Sections 26 and 28 of the drying godet can be heated together or independently of one another.
- Thread 10 Before the thread 10 is guided to the second drying unit 25, the Thread over a deflection roller 30 from the first drying unit 24 withdrawn and fed to the Tangel nozzle 18. In the tangel nozzle 18 Thread 10 swirls so that the filaments of the thread 10 intertwine are. The thread 10 becomes the second via a deflection roller 31 Drying unit 25 supplied. After the thread 10 the second drying unit 25 has gone through, this is the further manufacturing steps fed. In that the diameter of the first section 26, 27th is larger than the diameter of the second section 28, 29 shortening of the thread due to the intermingling of the filaments 10 balanced.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19626978 | 1996-07-04 | ||
| DE19626978 | 1996-07-04 | ||
| PCT/EP1997/003449 WO1998001605A1 (de) | 1996-07-04 | 1997-07-02 | Verfahren und vorrichtung zum nassspinnen, verstecken und aufwickeln eines multifilen fadens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0874923A1 EP0874923A1 (de) | 1998-11-04 |
| EP0874923B1 true EP0874923B1 (de) | 2000-05-24 |
Family
ID=7798932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97933645A Expired - Lifetime EP0874923B1 (de) | 1996-07-04 | 1997-07-02 | Verfahren und vorrichtung zum nassspinnen, verstecken und aufwickeln eines multifilen fadens |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0874923B1 (cs) |
| CN (1) | CN1197488A (cs) |
| CZ (1) | CZ103298A3 (cs) |
| DE (1) | DE59701753D1 (cs) |
| WO (1) | WO1998001605A1 (cs) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2141013C1 (ru) * | 1999-01-14 | 1999-11-10 | Нагорный Владимир Степанович | Способ промывки непрерывно движущейся нити |
| RU2141014C1 (ru) * | 1999-01-18 | 1999-11-10 | Нагорный Владимир Степанович | Способ промывки движущейся нити |
| CN103643312B (zh) * | 2013-12-04 | 2017-03-08 | 宜宾丝丽雅集团有限公司 | 一种卷绕装置外置的纺丝机的纺丝工艺 |
| CN103603073B (zh) * | 2013-12-04 | 2017-03-08 | 宜宾丝丽雅集团有限公司 | 一种适用于卷绕装置外置的纺丝机的纺丝工艺 |
| CN103774257B (zh) * | 2013-12-04 | 2016-05-25 | 宜宾丝丽雅集团有限公司 | 一种适用于卷绕装置外置的纺丝机的纺丝工艺 |
| CN103628163B (zh) * | 2013-12-04 | 2016-02-10 | 宜宾丝丽雅集团有限公司 | 纺丝机 |
| CN103628164B (zh) * | 2013-12-04 | 2016-02-10 | 宜宾丝丽雅集团有限公司 | 新型纺丝机 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59204907A (ja) * | 1983-05-02 | 1984-11-20 | Asahi Chem Ind Co Ltd | 連続湿式紡糸方法及び装置 |
| DE3534079C2 (de) * | 1984-09-27 | 1986-08-07 | Norddeutsche Faserwerke GmbH, 2350 Neumünster | Verfahren zum Herstellen von Glattgarn |
| JPH0280609A (ja) * | 1988-09-14 | 1990-03-20 | Kawasaki Heavy Ind Ltd | レーヨンフィラメントの連続製造方法およびその装置 |
-
1997
- 1997-07-02 CN CN97190845A patent/CN1197488A/zh active Pending
- 1997-07-02 CZ CZ981032A patent/CZ103298A3/cs unknown
- 1997-07-02 WO PCT/EP1997/003449 patent/WO1998001605A1/de not_active Ceased
- 1997-07-02 EP EP97933645A patent/EP0874923B1/de not_active Expired - Lifetime
- 1997-07-02 DE DE59701753T patent/DE59701753D1/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1197488A (zh) | 1998-10-28 |
| EP0874923A1 (de) | 1998-11-04 |
| CZ103298A3 (cs) | 1998-07-15 |
| WO1998001605A1 (de) | 1998-01-15 |
| DE59701753D1 (de) | 2000-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1594785B1 (de) | Vorrichtung zum herstellen und aufwickeln synthetischer fäden | |
| EP1979513B1 (de) | Vorrichtung zum schmelzspinnen und aufwickeln von synthetischen fäden | |
| DE3617248C2 (de) | Verfahren zum Herstellen eines Kompositfadens aus Chemiefasern | |
| CH678635A5 (cs) | ||
| DE1915821A1 (de) | Kerngarn und Verfahren zu seiner Herstellung | |
| DE4328771C2 (de) | Verfahren und Vorrichtung zur Herstellung eines gesponnenen Fadens | |
| CH628095A5 (de) | Verfahren zum direkten spinnen eines garnes aus einem faserband, und vorrichtung zur durchfuehrung des verfahrens. | |
| EP2358932B1 (de) | Vorrichtung zum texturieren und aufwickeln mehrerer fäden | |
| DE2435009A1 (de) | Verfahren zur herstellung von polyamid6-filamentgarnen | |
| DE102009037125A1 (de) | Verfahren zum Schmelzspinnen, Verstrecken und Aufwickeln eines multifilen Fadens sowie eine Vorrichtung zur Durchführung des Verfahrens | |
| EP0470949B1 (de) | Spinnmaschine zur Kontinuierlichen Herstellung von Filamenten | |
| EP0874923B1 (de) | Verfahren und vorrichtung zum nassspinnen, verstecken und aufwickeln eines multifilen fadens | |
| DE3146054A1 (de) | Verfahren und vorrichtung zur einstufigen herstellung von vollverstreckten textilen multifilamenten aus schmelzspinnbaren polymeren | |
| EP0718424B1 (de) | Anordnung von Streck-Texturiermaschinen für Synthetikfäden | |
| DE2200064A1 (de) | Spinnstrecktexturierverfahren zur herstellung texturierter faeden | |
| DE2855763C2 (cs) | ||
| DE3248396A1 (de) | Stapelfasergarne durch verflechtung | |
| DE19753806A1 (de) | Verfahren und Vorrichtung zum kontinuierlichen Herstellen von einem Viskose-Faden | |
| EP1101848B1 (de) | Verfahren zum Falschdralltexturieren eines synthetischen Fadens zu einem Kräuselgarn | |
| EP1486592A1 (de) | Vorrichtung zum Spinnen und Behandeln synthetischer Fäden | |
| DE19929817A1 (de) | Verfahren und Vorrichtung zur Herstellung schmelzersponnener Endlosfäden | |
| DE3930652A1 (de) | Verfahren und maschine zum kontinuierlichen herstellen von reyonfilamenten | |
| WO2019034488A1 (de) | Verfahren und vorrichtung zur herstellung eines multifilen vollverstreckten fadens aus einer polyamidschmelze | |
| EP1258547A1 (de) | Lufttexturierter Faden sowie Verfahren zu dessen Herstellung | |
| DE102009042229A1 (de) | Vorrichtung zum Schmelzspinnen, Behandeln und Aufwickeln eines multifilen Fadens |
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 |
Effective date: 19980312 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE IT LI |
|
| 17Q | First examination report despatched |
Effective date: 19981022 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE IT LI |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 20000524 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59701753 Country of ref document: DE Date of ref document: 20000629 |
|
| EN | Fr: translation not filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010501 |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010731 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |