DE69802130D1 - Verfahren und Vorrichtung zum Herstellen von streckblasgeformten Gegenständen - Google Patents

Verfahren und Vorrichtung zum Herstellen von streckblasgeformten Gegenständen

Info

Publication number
DE69802130D1
DE69802130D1 DE69802130T DE69802130T DE69802130D1 DE 69802130 D1 DE69802130 D1 DE 69802130D1 DE 69802130 T DE69802130 T DE 69802130T DE 69802130 T DE69802130 T DE 69802130T DE 69802130 D1 DE69802130 D1 DE 69802130D1
Authority
DE
Germany
Prior art keywords
stretch blow
marker
parison
disposed
dimensioned portion
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 - Fee Related
Application number
DE69802130T
Other languages
English (en)
Other versions
DE69802130T2 (de
Inventor
Craig Davis
Stephen R Lynn
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.)
Ball Corp
Original Assignee
Ball Corp
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 Ball Corp filed Critical Ball Corp
Publication of DE69802130D1 publication Critical patent/DE69802130D1/de
Application granted granted Critical
Publication of DE69802130T2 publication Critical patent/DE69802130T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C2049/7874—Preform or article shape, weight, defect or presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0723—Preforms or parisons characterised by their configuration having variable wall thickness at flange portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/072—Preforms or parisons characterised by their configuration having variable wall thickness
    • B29C2949/0724—Preforms or parisons characterised by their configuration having variable wall thickness at body portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0732—Preforms or parisons characterised by their configuration having variable diameter at flange portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/073—Preforms or parisons characterised by their configuration having variable diameter
    • B29C2949/0733—Preforms or parisons characterised by their configuration having variable diameter at body portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/074—Preforms or parisons characterised by their configuration having ribs or protrusions
    • B29C2949/0742—Circumferential
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • B29C2949/0772—Closure retaining means
    • B29C2949/0773—Threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
    • B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
    • B29C2949/077—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the neck
    • B29C2949/0777—Tamper-evident band retaining ring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/26—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at body portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/42412—Marking or printing
    • B29C49/42413—Marking or printing with a pattern for analysing deformation
DE1998602130 1997-04-08 1998-04-07 Verfahren und Vorrichtung zum Herstellen von streckblasgeformten Gegenständen Expired - Fee Related DE69802130T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/831,545 US5902526A (en) 1997-04-08 1997-04-08 Method and apparatus for producing stretch blow molded articles

Publications (2)

Publication Number Publication Date
DE69802130D1 true DE69802130D1 (de) 2001-11-29
DE69802130T2 DE69802130T2 (de) 2002-08-01

Family

ID=25259296

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998602130 Expired - Fee Related DE69802130T2 (de) 1997-04-08 1998-04-07 Verfahren und Vorrichtung zum Herstellen von streckblasgeformten Gegenständen

Country Status (9)

Country Link
US (1) US5902526A (de)
EP (1) EP0870592B1 (de)
CN (1) CN1063999C (de)
AT (1) ATE207406T1 (de)
AU (1) AU728666B2 (de)
BR (1) BR9800654A (de)
CA (1) CA2233656C (de)
DE (1) DE69802130T2 (de)
HK (1) HK1016122A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6620352B1 (en) 2000-07-27 2003-09-16 Ball Corporation Automated material distribution control for stretch blow molded articles
US7172087B1 (en) * 2003-09-17 2007-02-06 Graham Packaging Company, Lp Squeezable container and method of manufacture
FR2881979B1 (fr) * 2005-02-17 2007-04-27 Sidel Sas Procede de commande d'une machine de soufflage de recipients visant a corriger des anomalies dans la repartition de matiere
DE102005037101A1 (de) * 2005-08-03 2007-02-08 Krones Ag Verfahren und Vorrichtung zur Wandstärkenkontrolle
JP2010527311A (ja) * 2007-05-16 2010-08-12 エマージェント テクノロジーズ， エルエルシー 二重構成要素容器および作製プロセス
US8177098B2 (en) * 2007-05-17 2012-05-15 Amcor Limited Molded preform and container having integrated pour spout
US20090011157A1 (en) * 2007-07-05 2009-01-08 Husky Injection Molding Systems Ltd. Molded Article, A Mold Insert for Producing the Molded Article and a Method of Manufacturing of the Mold Insert
TW201043856A (en) * 2009-06-12 2010-12-16 Sheng-Yi Zhuang Method for manufacturing light cover
DE102010000941A1 (de) * 2010-01-15 2011-07-21 Krones Ag, 93073 Messvorrichtung
FR2988846B1 (fr) * 2012-03-27 2014-04-11 Msc & Sgcc Procede et installation de mesure de la repartition de verre dans des recipients
FR2997033B1 (fr) * 2012-10-22 2015-03-27 Sidel Participations "procede de formage d'un recipient par etirage-soufflage dans lequel une partie de paroi du recipient n'est pas moulee"
CH707529A1 (de) 2013-01-30 2014-07-31 Alpla Werke Verfahren zur Herstellung eines blasgeformten Kunststoffbehälters und einen diesbezüglichen Kunststoffbehälter.
WO2015116549A1 (en) * 2014-01-28 2015-08-06 Gojo Industries, Inc. Apparatus and method for preheating two stage preforms
EP3362254B8 (de) * 2015-10-16 2021-10-06 Amcor Rigid Plastics USA, LLC Verfahren zum untersuchen eines blasgeformten behälters aus einer vorform mit geätzter spitze, und behälter.

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Publication number Priority date Publication date Assignee Title
US3629382A (en) * 1966-12-29 1971-12-21 Ball Corp Method for programming parisons
US4044086A (en) * 1972-12-29 1977-08-23 American Can Company Method for making a blow molded oriented plastic bottle
US3934743A (en) * 1972-12-29 1976-01-27 American Can Company Blow molded, oriented plastic bottle and method for making same
US4024975A (en) * 1974-09-16 1977-05-24 Owens-Illinois, Inc. Reinforced bottle
US3956441A (en) * 1974-09-16 1976-05-11 Owens-Illinois, Inc. Method of making a blown bottle having a ribbed interior surface
FR2322722A1 (fr) * 1975-09-04 1977-04-01 Gantzer Jean Louis Procede d'allegement mecanique de recipients en matiere synthetique realises par extrusion-soufflage, dispositif pour la mise en oeuvre de ce procede, et recipient ainsi obtenu
US4170622A (en) * 1977-05-26 1979-10-09 Owens-Illinois, Inc. Method of making a blown hollow article having a ribbed interior surface
US4131666A (en) * 1977-10-25 1978-12-26 Monsanto Company Forming molecularly oriented containers from reheated preforms
US4151249A (en) * 1978-01-05 1979-04-24 Owens-Illinois, Inc. Method of making a blown bottle with internal ribs
SE417592B (sv) * 1978-03-13 1981-03-30 Plm Ab Behallare av teromplastiskt plastmaterial med i behallarveggen inbyggda forsterkningar, samt forfarande for framstellning av en sadan behallare
GB2034663B (en) * 1978-11-07 1983-09-01 Yoshino Kogyosho Co Ltd Synthetic resin thin-walled bottle
US4323341A (en) * 1979-01-24 1982-04-06 Valyi Emery I Apparatus for forming hollow plastic objects
JPS55142623A (en) * 1979-04-24 1980-11-07 Yoshino Kogyosho Co Ltd Method of forming optical pattern in polyethylene terephthalate resin made product and method of reinforcing optical pattern formed by the said method
US4287150A (en) * 1979-05-21 1981-09-01 Hercules Incorporated Method and apparatus for injection blow molding an article with improved detail definition
JPS5812142B2 (ja) * 1979-08-17 1983-03-07 石川島播磨重工業株式会社 ブロ−成形機
US4997692A (en) * 1982-01-29 1991-03-05 Yoshino Kogyosho Co., Ltd. Synthetic resin made thin-walled bottle
GB2138349B (en) * 1983-04-22 1987-06-03 Metal Box Plc Dimensionally stable thermoplastic tubular articles
US4564497A (en) * 1982-07-28 1986-01-14 Yoshino Kogyosho Co., Ltd. Method of producing bottles of saturated polyester
JPS5942437A (ja) * 1982-09-02 1984-03-09 Konishiroku Photo Ind Co Ltd フオトマスク用ガラス基板の選別方法
WO1984002874A1 (en) * 1983-01-22 1984-08-02 Harald Feuerherm Method for regulating the wall thickness of tubular preforms
JPS6230020A (ja) * 1985-08-01 1987-02-09 Ishikawajima Harima Heavy Ind Co Ltd プラスチツク吹込成形方法
US4785950A (en) * 1986-03-12 1988-11-22 Continental Pet Technologies, Inc. Plastic bottle base reinforcement
US4927679A (en) * 1987-05-29 1990-05-22 Devtech, Inc. Preform for a monobase container
DE3816273C3 (de) * 1988-05-12 1996-03-21 Harald Feuerherm Verfahren zum Extrusionsblasformen eines Hohlkörpers und Vorrichtung zur Durchführung des Verfahrens
US5057267A (en) * 1990-01-10 1991-10-15 Solvay Automotive, Inc. Apparatus and method for forming hollow parisons of variable wall thickness
US5101990A (en) * 1990-03-23 1992-04-07 Continental Pet Technologies, Inc. Stretch blow molded oblong or oval container
DE4123933A1 (de) * 1991-07-19 1993-01-21 Krupp Corpoplast Masch Vorformling, verfahren zur herstellung des vorformlings sowie verfahren zur beheizung des vorformlings
JP2606645B2 (ja) * 1992-12-25 1997-05-07 東洋製罐株式会社 表面光沢性に優れたブロー成形多層プラスチック容器

Also Published As

Publication number Publication date
ATE207406T1 (de) 2001-11-15
CA2233656C (en) 2004-12-28
CN1195610A (zh) 1998-10-14
DE69802130T2 (de) 2002-08-01
EP0870592A1 (de) 1998-10-14
AU6076298A (en) 1998-10-15
CN1063999C (zh) 2001-04-04
AU728666B2 (en) 2001-01-18
EP0870592B1 (de) 2001-10-24
CA2233656A1 (en) 1998-10-08
US5902526A (en) 1999-05-11
HK1016122A1 (en) 1999-10-29
BR9800654A (pt) 1999-06-29

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