WO1998023425A3 - Process and apparatus for neck crystallisation of a preform - Google Patents

Process and apparatus for neck crystallisation of a preform Download PDF

Info

Publication number
WO1998023425A3
WO1998023425A3 PCT/EP1997/005819 EP9705819W WO9823425A3 WO 1998023425 A3 WO1998023425 A3 WO 1998023425A3 EP 9705819 W EP9705819 W EP 9705819W WO 9823425 A3 WO9823425 A3 WO 9823425A3
Authority
WO
WIPO (PCT)
Prior art keywords
mouth section
value
crystallisation
preform
initial value
Prior art date
Application number
PCT/EP1997/005819
Other languages
French (fr)
Other versions
WO1998023425A2 (en
Inventor
Antonius Wilhelmus Franc Danen
Hendrik Jan Willem Elbertsen
Buuren-Teuwsen Maria Gerar Van
Original Assignee
Constar International Holland
Antonius Wilhelmus Franc Danen
Hendrik Jan Willem Elbertsen
Buuren Teuwsen Maria Gerarda V
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
Priority claimed from EP96810831A external-priority patent/EP0839632A1/en
Application filed by Constar International Holland, Antonius Wilhelmus Franc Danen, Hendrik Jan Willem Elbertsen, Buuren Teuwsen Maria Gerarda V filed Critical Constar International Holland
Priority to AU74094/98A priority Critical patent/AU7409498A/en
Publication of WO1998023425A2 publication Critical patent/WO1998023425A2/en
Publication of WO1998023425A3 publication Critical patent/WO1998023425A3/en

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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/76—Neck calibration
    • B29C49/761—Forming threads, e.g. shaping neck thread between blowing means and mould
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0063—After-treatment of articles without altering their shape; Apparatus therefor for changing crystallisation
    • 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
    • B29C49/76—Neck calibration
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • 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
    • B29K2995/0037—Other properties
    • B29K2995/0041—Crystalline

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A process for manufacturing a preform for a container made of a plastics material which becomes crystalline when heated, for example PET, PEN or copolymers of PET/PEN. A container blank is heated at least in a mouth section (4) to crystallisation temperature, so that it is crystallised by 20 %. During crystallisation, the outside diameter of the mouth section (4) shrinks from an initial value (A) to a smaller intermediate value (Z). In a further step, the mouth section (4) is expanded by an expanding mandrel (15) against an external mould in such a way that its outside diameter has a final value (E), which is between the initial value (A) and the intermediate value (Z). The wall thickness of the mouth section (4) is thereby reduced from an initial value (d1) to a final value (d3).
PCT/EP1997/005819 1996-11-28 1997-10-22 Process and apparatus for neck crystallisation of a preform WO1998023425A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74094/98A AU7409498A (en) 1996-11-28 1997-10-22 Preform manufacture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96810831.6 1996-11-28
EP96810831A EP0839632A1 (en) 1996-10-31 1996-11-28 Process and device for crystallising and forming preform necks by blow moulding hollow bodies

Publications (2)

Publication Number Publication Date
WO1998023425A2 WO1998023425A2 (en) 1998-06-04
WO1998023425A3 true WO1998023425A3 (en) 1998-11-19

Family

ID=8225759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/005819 WO1998023425A2 (en) 1996-11-28 1997-10-22 Process and apparatus for neck crystallisation of a preform

Country Status (2)

Country Link
AU (1) AU7409498A (en)
WO (1) WO1998023425A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201008520D0 (en) 2010-05-21 2010-07-07 Brittpac Ltd Containers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640665A (en) * 1969-12-19 1972-02-08 Phillips Petroleum Co Tangentially sliding neck swaging mechanism
US3695805A (en) * 1970-02-17 1972-10-03 Phillips Petroleum Co Forming plug for blow molding oriented articles
US4297306A (en) * 1979-11-07 1981-10-27 Yoshino Kogyosho Co., Ltd. Neck orienting method of bottles of saturated polyester resins
US4374878A (en) * 1979-06-11 1983-02-22 Plm Aktiebolag Blank adapted to be blown into a container and providing orientation of the material in the mouth and neck as well as the body
US4476084A (en) * 1981-05-19 1984-10-09 Yoshino Kogyosho Co., Ltd. Method of strengthening a neck portion of a bottle-shaped container of biaxially oriented polyethylene terephthalate resin
US4618515A (en) * 1985-04-05 1986-10-21 Continental Pet Technologies, Inc. Polyester container with oriented, crystallized thread finish for hot fill applications and method of making same
EP0601844A1 (en) * 1992-12-08 1994-06-15 Toyo Seikan Kaisha Limited Stretched molded products from PET/PBT blends and process for their production

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640665A (en) * 1969-12-19 1972-02-08 Phillips Petroleum Co Tangentially sliding neck swaging mechanism
US3695805A (en) * 1970-02-17 1972-10-03 Phillips Petroleum Co Forming plug for blow molding oriented articles
US4374878A (en) * 1979-06-11 1983-02-22 Plm Aktiebolag Blank adapted to be blown into a container and providing orientation of the material in the mouth and neck as well as the body
US4297306A (en) * 1979-11-07 1981-10-27 Yoshino Kogyosho Co., Ltd. Neck orienting method of bottles of saturated polyester resins
US4476084A (en) * 1981-05-19 1984-10-09 Yoshino Kogyosho Co., Ltd. Method of strengthening a neck portion of a bottle-shaped container of biaxially oriented polyethylene terephthalate resin
US4618515A (en) * 1985-04-05 1986-10-21 Continental Pet Technologies, Inc. Polyester container with oriented, crystallized thread finish for hot fill applications and method of making same
EP0601844A1 (en) * 1992-12-08 1994-06-15 Toyo Seikan Kaisha Limited Stretched molded products from PET/PBT blends and process for their production

Also Published As

Publication number Publication date
AU7409498A (en) 1998-06-22
WO1998023425A2 (en) 1998-06-04

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