DE69411952D1 - Verfahren und vorrichtung zur herstellung von behältern, insbesondere flaschen, aus kunststoff - Google Patents

Verfahren und vorrichtung zur herstellung von behältern, insbesondere flaschen, aus kunststoff

Info

Publication number
DE69411952D1
DE69411952D1 DE69411952T DE69411952T DE69411952D1 DE 69411952 D1 DE69411952 D1 DE 69411952D1 DE 69411952 T DE69411952 T DE 69411952T DE 69411952 T DE69411952 T DE 69411952T DE 69411952 D1 DE69411952 D1 DE 69411952D1
Authority
DE
Germany
Prior art keywords
receptacle
blank
manufacturing
containers
plastic
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
Application number
DE69411952T
Other languages
English (en)
Other versions
DE69411952T2 (de
Inventor
Jean Tristan Outreman
Guy Feuilloley
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.)
Sidel SA
Original Assignee
Sidel 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 Sidel SA filed Critical Sidel SA
Publication of DE69411952D1 publication Critical patent/DE69411952D1/de
Application granted granted Critical
Publication of DE69411952T2 publication Critical patent/DE69411952T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/16—Biaxial stretching during blow-moulding using pressure difference for pre-stretching, e.g. pre-blowing
    • 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
    • B29C49/48—Moulds
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6418—Heating of preforms
    • B29C49/642—Heating of preforms and shrinking of the preform
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6472—Heating or cooling preforms, parisons or blown articles in several stages
    • 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
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4892—Mould halves consisting of an independent main and bottom part
    • 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
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/02—Thermal shrinking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0017—Heat stable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/90—Direct application of fluid pressure differential to shape, reshape, i.e. distort, or sustain an article or preform and heat-setting, i.e. crystallizing of stretched or molecularly oriented portion thereof
    • Y10S264/905—Direct application of fluid pressure differential to shape, reshape, i.e. distort, or sustain an article or preform and heat-setting, i.e. crystallizing of stretched or molecularly oriented portion thereof having plural, distinct differential fluid pressure shaping steps
    • Y10S264/906—And heat-shrinking outside of mold including subsequent re-expanding of shrunken article using differential fluid pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
DE69411952T 1993-12-30 1994-12-27 Verfahren und vorrichtung zur herstellung von behältern, insbesondere flaschen, aus kunststoff Expired - Lifetime DE69411952T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315920A FR2714631B1 (fr) 1993-12-30 1993-12-30 Procédé et installation pour la fabrication de récipients, notamment de bouteilles, en matériau thermoplastique.
PCT/FR1994/001539 WO1995018005A1 (fr) 1993-12-30 1994-12-27 Procede et installation pour la fabrication de recipients, notamment de bouteilles, en materiau thermoplastique

Publications (2)

Publication Number Publication Date
DE69411952D1 true DE69411952D1 (de) 1998-08-27
DE69411952T2 DE69411952T2 (de) 1999-01-14

Family

ID=9454611

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69411952T Expired - Lifetime DE69411952T2 (de) 1993-12-30 1994-12-27 Verfahren und vorrichtung zur herstellung von behältern, insbesondere flaschen, aus kunststoff

Country Status (15)

Country Link
US (2) US5785921A (de)
EP (1) EP0737128B1 (de)
JP (1) JP3210674B2 (de)
KR (1) KR100278011B1 (de)
CN (1) CN1051275C (de)
AT (1) ATE168619T1 (de)
AU (1) AU680332B2 (de)
BR (1) BR9408430A (de)
CA (1) CA2179404C (de)
DE (1) DE69411952T2 (de)
DK (1) DK0737128T3 (de)
ES (1) ES2119380T3 (de)
FR (1) FR2714631B1 (de)
GR (1) GR3027750T3 (de)
WO (1) WO1995018005A1 (de)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745744B1 (fr) * 1996-03-05 1998-04-10 Sidel Sa Procede et installation pour la fabrication de recipients, notamment des bouteilles, en matiere thermoplastique
US6099769A (en) * 1997-12-15 2000-08-08 Husky Injection Molding Systems Ltd. Process for molding plastic articles
US6447281B1 (en) 1998-09-11 2002-09-10 Sidel, Inc. Blow mold shell and shell holder assembly for blow-molding machine
EP1253000B2 (de) 1999-02-12 2008-08-27 Toyo Seikan Kaisya, Ltd. Polyesterbehälter und Verfahren zu seiner Herstellung
CN1089670C (zh) * 1999-07-08 2002-08-28 李缵缨 底部具有深凹穴的塑胶瓶及其制造方法
CA2360792C (en) * 1999-11-30 2009-07-21 Yoshino Kogyosho Co., Ltd. Laminated polyester resin container and method of molding such a container
JP2003039538A (ja) * 2001-07-31 2003-02-13 Yoshino Kogyosho Co Ltd ポリエチレンテレフタレート樹脂を主体とするボトルの製造方法
JP4019308B2 (ja) * 2002-01-22 2007-12-12 株式会社吉野工業所 ２軸延伸ブロー成形方法
JP4731189B2 (ja) * 2005-03-23 2011-07-20 日精エー・エス・ビー機械株式会社 ブロー成形方法
FR2883794B1 (fr) * 2005-04-04 2007-06-15 Sidel Sas Dispositif de moulage ajustable en hauteur pour le moulage de recipients thermoplastiques de hauteurs diverses
WO2007000896A1 (ja) 2005-06-29 2007-01-04 Yoshino Kogyosho Co., Ltd. ポリエステル樹脂製容器及びその成形方法
US20070042070A1 (en) * 2005-07-28 2007-02-22 Mark Hallink Shell Attachment Means For Blow Molding Machines
WO2009001475A1 (ja) 2007-06-26 2008-12-31 Toyo Seikan Kaisha, Ltd. 耐熱圧性ポリエステルボトル及びその製造方法
FR2938464B1 (fr) * 2008-11-19 2013-01-04 Sidel Participations Moule pour le soufflage de recipients a fond renforce.
FR2945469B1 (fr) 2009-05-14 2011-06-10 Sidel Participations Support de moule pour fond boxe
US8287270B2 (en) 2009-09-30 2012-10-16 Printpack Illinois Inc. Methods and systems for thermoforming with billets
JP5491527B2 (ja) 2009-12-25 2014-05-14 日精エー・エス・ビー機械株式会社 大型容器の製造方法
US8444002B2 (en) * 2010-02-19 2013-05-21 Graham Packaging Lc, L.P. Pressure compensating bases for polymeric containers
FR2966374B1 (fr) 2010-10-26 2014-06-27 Sidel Participations Perfectionnement au support de fond de moule pour le faconnage d'un recipient en matiere thermoplastique
FR2975332B1 (fr) * 2011-05-19 2013-06-07 Sidel Participations Procede de fabrication de recipients, comprenant une operation anticipee de boxage
JP6095688B2 (ja) * 2012-01-05 2017-03-15 アムコー リミテッド 成型した容器に陽圧を加えるための、成型装置および方法
FR2998206B1 (fr) * 2012-11-19 2015-01-16 Sidel Participations Procede de fabrication de recipients, comprenant une operation retardee de boxage
EP3348375B2 (de) 2014-03-03 2023-11-01 Amcor Rigid Plastics USA, LLC Maschinenkomponente für formbodenbewegung
FR3019486B1 (fr) * 2014-04-02 2016-12-23 Sidel Participations Procede de fabrication et unite de moulage de recipients a grande course de boxage
FR3020008B1 (fr) * 2014-04-16 2016-05-20 Sidel Participations Unite de moulage comportant des moyens d'actionnement d'un fond de moule portes par un support fixe
EP2946908A1 (de) * 2014-05-19 2015-11-25 MeadWestvaco Corporation Fräserartiger Blasformradmechanismus und Verfahren zur Herstellung davon
CN106470820A (zh) * 2014-05-23 2017-03-01 塑帕克保特有限公司 具有可运动以适应内真空力的基部并由双重吹塑处理制成的耐热和双轴拉伸的吹塑塑料容器
FR3023503B1 (fr) * 2014-07-11 2016-07-29 Sidel Participations Mesure de la course de boxage par la fonction etirage, dans une installation de fabrication de recipients
CN104108856B (zh) * 2014-08-02 2016-10-05 山东嘉丰玻璃机械有限公司 用于制作特大玻璃瓶的制瓶机及生产工艺
WO2016026591A1 (en) * 2014-08-20 2016-02-25 Biotronik Ag Method for producing a balloon for angioplasty
WO2016100484A1 (en) 2014-12-19 2016-06-23 The Coca-Cola Company Gas-assisted base blow off methods for blow molding applications
JP6437379B2 (ja) * 2015-04-30 2018-12-12 株式会社吉野工業所 液体ブロー成形装置および液体ブロー成形方法
JP2018024134A (ja) * 2016-08-09 2018-02-15 東洋製罐株式会社 合成樹脂製容器の製造方法
FR3062335B1 (fr) * 2017-07-21 2021-03-19 Sidel Participations Procede de maintenance d'une installation de formage de recipients, incluant une procedure de resynchronisation
DE102020207833A1 (de) * 2020-06-24 2021-12-30 Krones Aktiengesellschaft Etikettiervorrichtung mit behälterbodennachkühlung
MX2024005289A (es) * 2021-11-03 2024-05-16 Amcor Rigid Packaging Usa Llc Conjunto de herramientas para formar un recipiente por soplado.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316594A (en) * 1961-10-09 1967-05-02 Monsanto Co Method and apparatus for making containers of thermoformable material
US4414175A (en) * 1980-10-07 1983-11-08 Rainville Co., Inc. Method for blowing oriented containers
SE448967B (sv) * 1983-03-10 1987-03-30 Petainer Sa Sett och anordning for tillverkning av termoplastbehallare
EP0308685B1 (de) * 1984-12-14 1994-06-15 Plm Ab Hohlkörper und Verfahren und Vorrichtung zu dessen Herstellung
DE3516175A1 (de) * 1985-05-06 1986-11-06 Fa. Martin Rudolph, 5620 Velbert Laengenverstellbare blasform
US5352402A (en) * 1989-10-23 1994-10-04 Nissei Asb Machine Co., Ltd. Method and apparatus for manufacturing biaxially oriented, thermally stable, blown containers
FR2658119B1 (fr) * 1990-02-13 1992-06-05 Sidel Sa Procede et installation pour fabriquer des recipients, tels que des bouteilles, en polyethyleneterephtalate, resistant a des conditions thermiques relativement severes au cours de leur utilisation.
JPH0813498B2 (ja) * 1992-02-29 1996-02-14 日精エー・エス・ビー機械株式会社 耐熱性容器の成形方法
WO1994001269A1 (en) * 1992-07-07 1994-01-20 Continental Pet Technologies, Inc. Method of forming container with high-crystallinity sidewall and low-clystallinity base
JPH0740955A (ja) * 1993-07-28 1995-02-10 Toyo Seikan Kaisha Ltd 耐熱性に優れた二軸延伸プラスチックボトルの製造方法および装置
JP3047732B2 (ja) * 1994-05-16 2000-06-05 東洋製罐株式会社 二軸延伸ブロー容器の製造方法

Also Published As

Publication number Publication date
FR2714631A1 (fr) 1995-07-07
US6089854A (en) 2000-07-18
KR970700104A (ko) 1997-01-08
EP0737128A1 (de) 1996-10-16
FR2714631B1 (fr) 1996-03-01
ES2119380T3 (es) 1998-10-01
DK0737128T3 (da) 1999-04-26
AU1388595A (en) 1995-07-17
AU680332B2 (en) 1997-07-24
JPH09507178A (ja) 1997-07-22
JP3210674B2 (ja) 2001-09-17
DE69411952T2 (de) 1999-01-14
CN1139903A (zh) 1997-01-08
WO1995018005A1 (fr) 1995-07-06
CA2179404A1 (fr) 1995-07-06
ATE168619T1 (de) 1998-08-15
CN1051275C (zh) 2000-04-12
BR9408430A (pt) 1997-08-05
EP0737128B1 (de) 1998-07-22
GR3027750T3 (en) 1998-11-30
KR100278011B1 (ko) 2001-01-15
CA2179404C (fr) 2001-02-06
US5785921A (en) 1998-07-28

Similar Documents

Publication Publication Date Title
DE69411952D1 (de) Verfahren und vorrichtung zur herstellung von behältern, insbesondere flaschen, aus kunststoff
ATE437809T1 (de) Behälter zur verpackung von produkten, vorrichtung zur verarbeitung von kunststoff sowie verfahren zur behälterherstellung
ATE221439T1 (de) Verfahren zum behandeln von kunststoffen, duroplasten und elastomeren
ATE330850T1 (de) Verfahren und vorrichtung zur dekontamination von vorformlinghälsen
DE59601241D1 (de) Kondensations-Spritzgussverfahren zur Herstellung von Flaschenvorformlingen aus Polyethylenterephthalat und/oder seinen Copolyestern.
DE69406298D1 (de) Vorrichtung zur herstellung von behältern aus kunststoff durch blasformen
DE69418597D1 (de) Verfahren und vorrichtung zur herstellung eines polartikels und die hergestellten produkte
DE69624069D1 (de) Flasche mit einem Henkel und Verfahren zur Herstellung der Flasche durch Streckblasformen
DE60219022D1 (de) Verfahren und vorrichtung zur herstellung einer kunststoffbehälter-verschluss-kombination
EP1481789A3 (de) Verfahren und Vorrichtung zur Herstellung von Verpackungsbehältern aus Kunststoff, Verpackungsmaschine und Verpackungsbehälter
BR9809073A (pt) Recipiente de preenchimento a quente com abertura larga
DE3367893D1 (en) Closure cap for a container and method for its manufacture
DE68924599D1 (de) Verfahren und vorrichtung zur extrusions-blasformung von polyethylenterephthalat-artikeln.
DE69808918D1 (de) Verfahren und installation zum herstellen von behältern durch blasformen von vorformlingen aus kunststoff
DE69619324D1 (de) Blasformverfahren zur Herstellung von Polypropylen Behältern
ATE275082T1 (de) Transportvorrichtung für vorformlinge in eine vorrichtung zur herstellung von behältern durch blasformen
ATE33585T1 (de) Verfahren und vorrichtung zum umboerdeln rohrfoermiger polymerer gegenstaende.
DE60109587D1 (de) Vorrichtung zur behandlung von verpackungsbehältern mit einem tisch mit sandwichstruktur sowie ein verfahren zu seiner herstellung
DE69609169D1 (de) Verfahren zum herstellen von blasgeformten körpern in verschiedenen grössen und vorrichtung zum ausführen des verfahrens
DE69624810D1 (de) Verfahren und vorrichtung zum stapeln von formteilen für blasgeformte kunststoffbehälter
DE68923750D1 (de) Streckblasformverfahren zur Herstellung einer expandierten Flasche, Deformiervorrichtung zum Deformieren oder Biegen eines Streckvorformlings und streckblasgeformte Flasche.
DE50004738D1 (de) Vorrichtung und verfahren zur blasformung von behältern
DE50005915D1 (de) Verfahren und vorrichtung zur blasformung von behältern
ATE223800T1 (de) Verfahren zur herstellung von blasformteilen aus kunststoff
DE59206506D1 (de) Behälter für die verpackung von lebensmitteln, verfahren zur herstellung eines solchen behälters und vorrichtung zur durchführung dieses verfahrens

Legal Events

Date Code Title Description
8364 No opposition during term of opposition