CN1228132A - Process for elimination of paper defects in continous paper production - Google Patents
Process for elimination of paper defects in continous paper production Download PDFInfo
- Publication number
- CN1228132A CN1228132A CN97197256A CN97197256A CN1228132A CN 1228132 A CN1228132 A CN 1228132A CN 97197256 A CN97197256 A CN 97197256A CN 97197256 A CN97197256 A CN 97197256A CN 1228132 A CN1228132 A CN 1228132A
- Authority
- CN
- China
- Prior art keywords
- paper
- defective
- detector
- paper web
- speed
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Paper (AREA)
- Making Paper Articles (AREA)
Abstract
A process for elimination of paper defects during continuous paper production which reduces time lost due to defect correction has the following steps: a) recognition and localization of the paper defect by means of sensors (5) directed at the running paper web (4); b) detection or calculation of the speed of the paper web (4) between the sensor (5) and a station (6) for defect correction positioned downstream from the sensor (5); c) on the basis of the speed of the paper web (4), calculation of the arrival time of the web segment with the paper defect at the station (6) for defect correction; d) before arrival of the web segment with the paper defect at the station (6) for defect correction, reduction of the web segment speed to a lower value than normal speed or to zero, e) automatic removal of the paper defect in station (6) for defect correction and f) restoring the web section to normal speed.
Description
The present invention relates to a kind of method of in continuous paper-making process, eliminating the paper defective.The paper machine of continuous operation is by paper pulp input, fillter section, squeeze section, dryer section, dry type calender and device such as batch and form.In the paper pulp input unit, moisture pulp suspension is along the uniform distribution of web width, so that at first guarantee to have best paper structure.In back to back fillter section, form real paper through a filtering process.Each paper fibre has been fixed as their final positions on a warm felt.After this, in squeeze section, from then on unnecessary water discharged in the paper fibre felt with pressure.For this reason, paper web is by a plurality of continuously arranged squeezers.Through carrying out the press polish of paper web after the drying that is next to this, adopt the calender of forming by two rolls usually for this reason, it also impels the paper compression and meanwhile influences paper sheet thickness except press polish.At last with reeling of paper web on a reel.
In above-mentioned manufacture process, may in paper web, produce defective.These defectives may be holes or along the crack of paper web longitudinal edge, may be the dark or light spot on paper web in addition.Undesirable paper pulp heap when producing, also may occur, or in the paper web of operation, produce fold.These defectives generally do not disturb paper web to carry in the continuation of paper machine inside.But in the processing unit (plant) in downstream,, may cause at defective position breaking or the thorough fracture of paper web for example at a back to back machine for brushing or also then opposite in a printing machine.Therefore require before paper web arrives the procedure of processing in downstream, to eliminate this type of paper defective.
Eliminating the paper defective so far carries out by hand, this is by be determined mark on the work of defective position on by means of the paper web of detector monitors defective, and when so do markd paper web section near when device in downstream with this web brakes, thereby can be when advancing by operating personnel at the rejected region coated with adhesive with super snail speed.Also can be operated personnel according to the type of defective and remove whole defective paper web section, and the bonded part is set along whole web width.The mode consumed time of this elimination defective is long because the speed of paper roll and thereby the speed of this whole paper web must be reduced to super snail speed or even be zero so that manual this rejected region of eliminating.Even but this time-consuming and thereby expensively eliminate defective, still be not enough in follow-up procedure of processing, to get rid of reliably the possibility that the paper defective becomes the fracture cause.
The objective of the invention is to make a kind of method, can reduce the loss of time that causes because of the defective of eliminating in the paper web when the papermaking by means of this method.
In order to reach this purpose, the paper defective is eliminated in suggestion in the process of papermaking continuously method has the following step:
A) by means of a detector identification and a locating paper sheets defective of aiming at the paper web in moving;
B) detect or calculate at detector and spatially be connected web speed between the defective cancellation element in detector downstream;
C) calculate the moment that the paper web section that the paper defective is arranged arrives the defective cancellation element by means of web speed;
D) also before the paper web section that the paper defective is arranged arrives the defective cancellation element, just the speed of this paper web section is reduced to than the low value of normal speed or reduces to zero;
E) in the defective cancellation element, eliminate the paper defective automatically; And
F) speed of paper web section is brought up to normal speed.
Therefore, according to the present invention, only by means of traditional device that is suitable detector, carry out the identification and the location of paper defective, the paper web in moving is aimed at by the testing agency of detector.Different with the method that adopts so far, detect or calculate at detector and spatially be connected web speed between the defective cancellation element in detector downstream by the present invention.There is the paper web section of paper defective to arrive moment of defective cancellation element according to this speed calculation, still before the paper web section that the paper defective is arranged arrives, just the speed of this paper web section is reduced to one in this case and is in a ratio of the value that has reduced or even is decreased to zero fully with normal speed.Then in this device calculate according to web speed this moment, eliminate the paper defective automatically by means of suitable equipment.And then the speed of paper web section is brought up to normal value again.
With known manual to eliminate the defective process different, the method does not need paper web is reduced to eliminating the required speed that has reduced of defective with hand carefully.Exactly, can conclude in system which type of speed is the device paper web section that is used for eliminating defective in the downstream must have, so that eliminate the paper defective reliably according to the result who obtains by the analyzing and testing signal.For this purpose, detector should be set to discern the paper defective and can locate, and can also determine its feature, for example the type of paper defective and contour shape and definite its position with respect to web width.All these information can be used in system and be analyzed, so that the speed of paper web section in defective cancellation element inside is adjusted into needed value.In this way with the minimum level that reduces to absolute demand the loss of time that causes owing to the defective of eliminating in the paper web in the paper-making process.
In a design of method, advise, another detector of process before paper web arrives detector, and this another detector carries out pre-detection or rough detection to the paper defective, this detector then is provided for additionally detecting the feature of paper defective, for example its type and contour shape.Can make in this way paper web and thereby paper machine normally move with very high speed because another detector need only be designed for the basic identification and the Primary Location of defective.Therefore, the measurement feature of this another detector is at fast detecting, and is main if it were not for the detection at details.Or rather, details detects by that detector that is located at the device upstream that is used to eliminate defective.These details refer to the paper defective type, it contour shape and the paper defective with respect to the position of web width.
The paper web section that contains the paper defective that preliminary examination measures arrives the moment of this detector, preferably calculate by means of paper web the speed in the detector way of going to.
Suggestion in another design of method, the speed that contains the paper web section of paper defective still just was reduced to a value lower than normal speed before this paper web section arrives this detector.In addition, the speed that has reduced can be reduced to one by comparison for the value that reduced once more or reduce to zero before this paper web section is about to arrive the defective cancellation element.
The present invention also advises in addition, and elimination paper defective is undertaken by plane earth covering rejected region by means of a kind of fluid of quick-hardening.Can it be sprayed on the rejected region by ground, one or both sides by the coating of first kind of scheme fluid and implement.According to second kind of scheme, fluid can be coated on the rejected region by roller coating device.
Especially a kind of UV lacquer of quick-hardening is applicable to as this fluid.
The method both had been suitable for online use in the scope of papermaking, also was suitable for off-line use in the scope of papermaking.Under first kind of situation, eliminating device, detector and another detector of defective arranges along continuous paper web, so the automatic elimination of paper defective is carried out during full speed running in paper machine when paper web, and under second kind of situation, this another detector is located on the paper machine, and the device of elimination defective and detector are arranged along a turning device or a pre-rolling device that is located at this paper machine downstream.Turning device or pre-rolling device refer to the connecting link between paper machine and machine for brushing.
By means of an embodiment other details and advantage are described below.Accompanying drawing relates to this embodiment, has represented the side view of pre-rolling device among the figure, and it is arranged in production process between paper machine and the machine for brushing.
Reel 1 has been represented on the right of accompanying drawing, at paper web that the paper machine terminal is batched on this reel.Paper web has the paper defective in different places.The detection of paper defective is finished in the paper machine of upstream, and the paper defective is stored in a controller inside with respect to the position that is wound on the web length on the reel in this case.When reel 1 after launching on the pre-rolling device, where system just " known " defective is positioned at the web length inside of being batched.By another kind of alternative plan, also can be that reel 1 is provided with the internal memory that includes the corresponding position data of paper defective, it for example is an electronic chip that is contained on the reel.
Paper web is emitted from reel 1 in pre-rolling device, then through first guide roller 2 and 3 guidings of second guide roller.This represents paper web with numerical chracter 4 in this figure.
Detector 5 is between reel 1 and guide roller 2, and it designs differently with another detector in the paper machine that is contained in the upstream aspect it detects characteristic.Another detector only is given for that paper web also detects the paper defective when the operation of high speed and with respect to web length coarse positioning at least, the detector 5 that is fixed on the pre-rolling device then is designed for the accurate feature of the detected in advance paper defective of identification and the size and the extension position of definite paper defective.The sensor of relevant these other features of paper defective can be set in addition, for example discern dark/light spot or warpage and fold.Judge in system according to the measured value of detector 5 then, which kind of mode should and to carry out the elimination of defective in which type of scope by.
Because the coarse positioning of paper defective is known according to the measurement result of another detector, also before arriving detector 5, this paper web section just can be reduced to a value that has reduced than normal speed so contain the speed of the paper web section of paper defective.The advantage of doing like this is to be done some preparations in the arrival of 5 pairs of flaw indications of detector and location roughly, and can be without any the detail detection of time delay ground input to this defective.
As long as paper web directly and come the pre-rolling device from paper machine without interruption, then contains the moment that the paper web section of the paper defective that preliminary examination measures arrives detector 5, just can calculate from another detector speed these detector 5 ways of going to by means of paper web.
Implement the elimination of paper defective in a device 6, this device is between guide roller 2 and guide roller 3 in the present embodiment.Be provided with the fog-spray nozzle 7 of aiming at paper web 4 there, be sprayed on the rejected region by its UV lacquer with a kind of quick-hardening.Also can apply this fluid by another kind of scheme with roller.As shown in drawings, coating can be in a side, but also can be in both sides.Also can substitute the UV lacquer of this quick-hardening and adopt a kind of suitable plastic cement stick.What have decisive significance is, this fluid itself has smooth and film shape ground to cover the characteristic of rejected region, and so further adds in for example machine for brushing or printing machine and can protect paper in the paper defect area man-hour.Employed this medium should be in the course of dissolution of paper, for example can separate with paper again easily when waste disposal or old paper utilize.
Coating fluid carries out automatically in device 6, and that is to say does not have artificial influence.Therefore must know exactly that the paper web section that contains the paper defective arrives the moment of fog-spray nozzle 7 operation areas.Conclusive for this reason be paper web and thereby also be contain defective the paper web section with which type of speed from detector to fog-spray nozzle 7 motions.Therefore detect or calculate the web speed between detector 5 and the device 6 that spatially is located at detector 5 downstreams, and calculate according to the speedometer that is obtained the accurate moment of the paper web section arrival device 6 that contains the paper defective.In addition, the result who records by detector 5 at the controller inner analysis of fog-spray nozzle 7, that is fog-spray nozzle 7 is not under any circumstance all along the overall with work of paper web, and only is vertically and in the web width scope to handle detecting the related paper web in defective zone.Therefore favourable mode is that fog-spray nozzle 7 is made up of several spray nozzles, and they are arranged and can control one by one along web width.
Also before the paper web section that contains the paper defective arrives device 6, just the speed of paper web is reduced to one and is in a ratio of the value that has reduced or reduces to zero with normal speed.Enter running and after dry run finishes effectively, the speed of paper web is brought up to normal value again at this device 6.
Accompanying drawing is represented is that the off-line of the method is used, and that is to say that another detector has been arranged in paper machine, install 6 and detector 5 then be located in the pre-rolling device.But equally also can online use the method, device, detector and another detector are for example arranged along continuous paper web in a kind of knockdown papermaking and machine for brushing in this case.
Detector is worked along the paper web overall with optically.Can use the capable video camera of infrared detector or CCD.
Claims (11)
1. the method for eliminating the paper defective in continuous paper-making process has the following step:
A) by means of detector (a 5) identification and a locating paper sheets defective of aiming at the paper web (4) in moving;
B) detect or calculate at detector (5) and spatially be connected paper web (4) speed between the defective cancellation element (6) in detector (5) downstream;
C) there is the paper web section of paper defective to arrive the moment of defective cancellation element (6) by means of paper web (4) speed calculation;
D) also arriving defective cancellation element (6) in the paper web section that the paper defective is arranged is reduced to the speed of this paper web section than the low value of normal speed before or reduces to zero;
E) in defective cancellation element (6), eliminate the paper defective automatically; And
F) speed of paper web section is brought up to normal speed.
2. it is characterized by in accordance with the method for claim 1: paper web is another detector of process before arrival detector (5); And this another detector carries out pre-detection or rough detection to the paper defective, and detector (5) then is designed for the feature that additionally detects the paper defective, for example its type and contour shape.
3. in accordance with the method for claim 2, it is characterized by: there is the paper web section of the paper defective that preliminary examination measures to arrive moment of detector (5), calculate by means of paper web (4) the speed in detector (5) way of going to.
4. it is characterized by in accordance with the method for claim 3: the speed that contains the paper web section of paper defective still arrives detector (5) in this paper web section and just is reduced to a value littler than normal speed before.
5. it is characterized by in accordance with the method for claim 4: the speed that has reduced is about to arrive defective cancellation element (6) in this paper web section and is reduced to one before by comparison for the value that reduced once more or reduce to zero.
6. according to the described method of one of all claims in prostatitis, it is characterized by: eliminate the paper defective and undertaken by fluid level ground covering rejected region with a kind of quick-hardening.
7. it is characterized by in accordance with the method for claim 6: with these fluid one or both sides be sprayed on the rejected region.
8. it is characterized by in accordance with the method for claim 6: this fluid is coated on the rejected region by roller coating device.
9. according to claim 6,7 or 8 described methods, it is characterized in that a kind of UV lacquer of the quick-hardening as this fluid.
10. according to the described method of one of all claims in prostatitis, it is characterized by: defective cancellation element, detector and another detector are arranged (on-line method) along a continuous paper web, therefore eliminate the paper defective automatically and carry out during full speed running in paper machine when paper web.
11. according to the described method of one of all claims in prostatitis, it is characterized by: this another detector is located on the paper machine, arranges (off-line method) and install (6) and detector (5) along a turning device or a pre-rolling device that is located at this paper machine downstream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19632988.4 | 1996-08-15 | ||
| DE19632988A DE19632988C1 (en) | 1996-08-15 | 1996-08-15 | Process for eliminating paper defects in continuous paper production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1228132A true CN1228132A (en) | 1999-09-08 |
| CN1104526C CN1104526C (en) | 2003-04-02 |
Family
ID=7802762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97197256A Expired - Fee Related CN1104526C (en) | 1996-08-15 | 1997-07-18 | Process for elimination of paper defects in continous paper production |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0922139B1 (en) |
| JP (1) | JP2001502648A (en) |
| KR (1) | KR20000029927A (en) |
| CN (1) | CN1104526C (en) |
| AT (1) | ATE210762T1 (en) |
| BR (1) | BR9714336A (en) |
| CA (1) | CA2263211C (en) |
| CZ (1) | CZ297849B6 (en) |
| DE (2) | DE19632988C1 (en) |
| ES (1) | ES2165084T3 (en) |
| ID (1) | ID17869A (en) |
| NO (1) | NO313558B1 (en) |
| PL (1) | PL184169B1 (en) |
| PT (1) | PT922139E (en) |
| RU (1) | RU2166017C2 (en) |
| WO (1) | WO1998006897A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187525B (en) * | 2006-10-05 | 2011-07-06 | 沃依特专利有限责任公司 | Drying device |
| CN102224411A (en) * | 2008-11-25 | 2011-10-19 | 美卓自动化有限公司 | Method for guiding web patching using a re-reeler and a corresponding system |
| CN101815665B (en) * | 2007-09-27 | 2012-10-10 | Abb有限公司 | Accurate tracking of web features through converting processes |
| CN104326125A (en) * | 2014-08-28 | 2015-02-04 | 北京凌云光技术有限责任公司 | Defective tag tracking method and device |
| CN104326301A (en) * | 2014-08-28 | 2015-02-04 | 北京凌云光技术有限责任公司 | Defective tag automatic removing device and system using automatic removing device |
| CN105500919A (en) * | 2015-12-30 | 2016-04-20 | 凌云光技术集团有限责任公司 | Label defect alarming method and device |
| WO2016141672A1 (en) * | 2015-03-06 | 2016-09-15 | 广州广电运通金融电子股份有限公司 | Banknote rolling-out control method and apparatus, and banknote storage device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI990159A (en) * | 1999-01-28 | 2000-07-29 | Valmet Automation Inc | Procedure for monitoring the quality of a fiber web |
| DE10011067A1 (en) * | 2000-03-07 | 2001-09-13 | Voith Paper Patent Gmbh | During paper web production a system measures and monitors the shrinkage and other characteristics with data to be used by customers to set their processes easily and with reduced wastage |
| US20020176617A1 (en) * | 2001-05-22 | 2002-11-28 | Pti Advanced Filtration, Inc. | System and method for continuous integrity testing of a material web |
| DE102005053037A1 (en) * | 2005-11-04 | 2007-05-10 | Maschinenfabrik Rieter Ag | Fiber stream`s e.g. yarn, dirt detecting method for textile machine, involves producing images of fiber stream parts to determine whether discrepancy is concluded in detected radiation within images in presence of dirt within fiber parts |
| FI118924B (en) | 2005-12-05 | 2008-05-15 | Metso Paper Inc | Apparatus and method for removing a broken pulp web from a cell dryer |
| FI119981B (en) * | 2006-09-06 | 2009-05-29 | Metso Paper Inc | Method and apparatus for patching fibrous material |
| US9053413B2 (en) | 2013-07-22 | 2015-06-09 | Xerox Corporation | Automatically identifying locations of printing defects within printed rolls |
| IT201600127586A1 (en) * | 2016-12-16 | 2018-06-16 | Futura Spa | Plant for the production of paper material logs. |
| CN109366568A (en) * | 2018-11-30 | 2019-02-22 | 广州市普理司科技有限公司 | Multi-functional automatic product examine machine and its control method |
| CN111879781B (en) * | 2020-06-17 | 2022-02-11 | 西安交通大学 | Test paper quality detection system based on machine vision |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62295862A (en) * | 1986-06-13 | 1987-12-23 | Toshiba Corp | Sheet repair control device for winder |
| FR2670896B1 (en) * | 1990-12-24 | 1994-08-12 | Siderurgie Fse Inst Rech | DEVICE FOR DETECTING FAULTS OF A STRIP WHILE BEING TRIPPED. |
| JP2848028B2 (en) * | 1991-05-29 | 1999-01-20 | 王子製紙株式会社 | Web repair method and repair device |
-
1996
- 1996-08-15 DE DE19632988A patent/DE19632988C1/en not_active Expired - Fee Related
-
1997
- 1997-07-18 JP JP10509323A patent/JP2001502648A/en active Pending
- 1997-07-18 EP EP97937503A patent/EP0922139B1/en not_active Expired - Lifetime
- 1997-07-18 BR BR9714336-7A patent/BR9714336A/en not_active IP Right Cessation
- 1997-07-18 DE DE59705791T patent/DE59705791D1/en not_active Expired - Fee Related
- 1997-07-18 WO PCT/EP1997/003859 patent/WO1998006897A1/en active IP Right Grant
- 1997-07-18 CZ CZ0048899A patent/CZ297849B6/en not_active IP Right Cessation
- 1997-07-18 CA CA002263211A patent/CA2263211C/en not_active Expired - Fee Related
- 1997-07-18 AT AT97937503T patent/ATE210762T1/en not_active IP Right Cessation
- 1997-07-18 KR KR1019997001143A patent/KR20000029927A/en not_active Application Discontinuation
- 1997-07-18 PT PT97937503T patent/PT922139E/en unknown
- 1997-07-18 ES ES97937503T patent/ES2165084T3/en not_active Expired - Lifetime
- 1997-07-18 RU RU99105120/12A patent/RU2166017C2/en not_active IP Right Cessation
- 1997-07-18 CN CN97197256A patent/CN1104526C/en not_active Expired - Fee Related
- 1997-08-14 ID IDP972852A patent/ID17869A/en unknown
-
1999
- 1999-02-09 NO NO19990605A patent/NO313558B1/en not_active IP Right Cessation
- 1999-02-12 PL PL97331586A patent/PL184169B1/en not_active IP Right Cessation
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187525B (en) * | 2006-10-05 | 2011-07-06 | 沃依特专利有限责任公司 | Drying device |
| CN101815665B (en) * | 2007-09-27 | 2012-10-10 | Abb有限公司 | Accurate tracking of web features through converting processes |
| CN102224411A (en) * | 2008-11-25 | 2011-10-19 | 美卓自动化有限公司 | Method for guiding web patching using a re-reeler and a corresponding system |
| CN102224411B (en) * | 2008-11-25 | 2013-10-16 | 美卓自动化有限公司 | Method for guiding web patching using a re-reeler and a corresponding system |
| CN104326125A (en) * | 2014-08-28 | 2015-02-04 | 北京凌云光技术有限责任公司 | Defective tag tracking method and device |
| CN104326301A (en) * | 2014-08-28 | 2015-02-04 | 北京凌云光技术有限责任公司 | Defective tag automatic removing device and system using automatic removing device |
| CN104326125B (en) * | 2014-08-28 | 2016-08-24 | 北京凌云光技术有限责任公司 | Flaw label tracking and device |
| CN104326301B (en) * | 2014-08-28 | 2017-02-08 | 北京凌云光技术有限责任公司 | Defective tag automatic removing device and system using automatic removing device |
| WO2016141672A1 (en) * | 2015-03-06 | 2016-09-15 | 广州广电运通金融电子股份有限公司 | Banknote rolling-out control method and apparatus, and banknote storage device |
| US10287125B2 (en) | 2015-03-06 | 2019-05-14 | Grg Banking Equipment Co., Ltd. | Banknote rolling-out control method and apparatus, and banknote storage device |
| CN105500919A (en) * | 2015-12-30 | 2016-04-20 | 凌云光技术集团有限责任公司 | Label defect alarming method and device |
| CN105500919B (en) * | 2015-12-30 | 2017-11-10 | 凌云光技术集团有限责任公司 | A kind of label defect alarm method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2166017C2 (en) | 2001-04-27 |
| CZ48899A3 (en) | 1999-07-14 |
| EP0922139A1 (en) | 1999-06-16 |
| CN1104526C (en) | 2003-04-02 |
| CA2263211A1 (en) | 1998-02-19 |
| NO990605L (en) | 1999-02-09 |
| ATE210762T1 (en) | 2001-12-15 |
| DE19632988C1 (en) | 1998-01-22 |
| WO1998006897A1 (en) | 1998-02-19 |
| ID17869A (en) | 1998-02-05 |
| JP2001502648A (en) | 2001-02-27 |
| PL331586A1 (en) | 1999-07-19 |
| NO313558B1 (en) | 2002-10-21 |
| CA2263211C (en) | 2006-04-18 |
| CZ297849B6 (en) | 2007-04-11 |
| BR9714336A (en) | 2000-04-11 |
| KR20000029927A (en) | 2000-05-25 |
| NO990605D0 (en) | 1999-02-09 |
| PT922139E (en) | 2002-04-29 |
| DE59705791D1 (en) | 2002-01-24 |
| ES2165084T3 (en) | 2002-03-01 |
| PL184169B1 (en) | 2002-09-30 |
| EP0922139B1 (en) | 2001-12-12 |
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