GB2001577A - Manufacturing thin- walled articles - Google Patents

Manufacturing thin- walled articles

Info

Publication number
GB2001577A
GB2001577A GB787830874A GB7830874A GB2001577A GB 2001577 A GB2001577 A GB 2001577A GB 787830874 A GB787830874 A GB 787830874A GB 7830874 A GB7830874 A GB 7830874A GB 2001577 A GB2001577 A GB 2001577A
Authority
GB
United Kingdom
Prior art keywords
temperature
sheet
thermoforming
range
manufacturing thin
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
Application number
GB787830874A
Other versions
GB2001577B (en
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.)
Bellaplast GmbH
Original Assignee
Bellaplast GmbH
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 Bellaplast GmbH filed Critical Bellaplast GmbH
Publication of GB2001577A publication Critical patent/GB2001577A/en
Application granted granted Critical
Publication of GB2001577B publication Critical patent/GB2001577B/en
Expired 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
    • B29C51/423—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential through the thickness 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A method for manufacturing thin- walled articles, for example cups and plates, by thermoforming a sheet of crystalline thermoplastics material which has a critical crystalline melting temperature range. The method includes temperature conditioning the sheet for thermoforming, and the conditioning comprises developing a preliminary temperature profile across the sheet such that the core part of the sheet is at a temperature lower than the said range, the outer surface regions of the sheet being at a still lower temperature. A final temperature profile for thermoforming is developed by reheating the outer surface regions to a temperature such that those regions become at least elastically deformable, the core part being kept in an elastically deformable state at a temperature lower than the said range.
GB787830874A 1977-07-25 1978-07-24 Method of manufacturing thin-walled articles from crystalline thermoplastics material Expired GB2001577B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81887677A 1977-07-25 1977-07-25

Publications (2)

Publication Number Publication Date
GB2001577A true GB2001577A (en) 1979-02-07
GB2001577B GB2001577B (en) 1982-01-13

Family

ID=25226658

Family Applications (2)

Application Number Title Priority Date Filing Date
GB787830719A Expired GB2001576B (en) 1977-07-25 1978-07-21 Method for manufacturing thin-walled articles from crystalline thermoplastics material
GB787830874A Expired GB2001577B (en) 1977-07-25 1978-07-24 Method of manufacturing thin-walled articles from crystalline thermoplastics material

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB787830719A Expired GB2001576B (en) 1977-07-25 1978-07-21 Method for manufacturing thin-walled articles from crystalline thermoplastics material

Country Status (13)

Country Link
JP (1) JPS5440870A (en)
AR (1) AR215724A1 (en)
AT (2) AT370672B (en)
BE (1) BE869217A (en)
CA (2) CA1114125A (en)
DE (2) DE2830740C2 (en)
ES (1) ES471997A1 (en)
FR (2) FR2398592A1 (en)
GB (2) GB2001576B (en)
IT (2) IT1097332B (en)
NL (2) NL7807831A (en)
SE (1) SE423878B (en)
ZA (2) ZA784183B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002142A1 (en) * 1983-11-11 1985-05-23 A.A.R.C. (Management) Pty. Limited Molten thermoplastic web feeding process and apparatus
EP0471528A1 (en) * 1990-08-12 1992-02-19 Polysheet (Ireland) Limited A method and apparatus for forming an article of PET material
EP3437834A4 (en) * 2016-03-31 2020-06-10 Toyobo Co., Ltd. Void-containing heat-shrinkable polyester-based film

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281895U (en) * 1975-12-16 1977-06-18
JPS56167411A (en) * 1980-05-30 1981-12-23 Mitsubishi Electric Corp Manufacture of synthetic resin molding
JPS57135110A (en) * 1981-02-16 1982-08-20 Toyo Seikan Kaisha Ltd Manufacture of multilayer plastic vessel
JPS595019A (en) * 1982-07-02 1984-01-11 Toppan Printing Co Ltd Manufacture of heat-resisting container
EP0133188A1 (en) * 1983-08-05 1985-02-20 Brückner Maschinenbau Gernot Brückner GmbH & Co. KG Process and apparatus for producing a hot-formed plastic composite
DE3505828A1 (en) * 1985-02-20 1987-01-22 Benecke Gmbh J METHOD FOR THE PRODUCTION OF MOLDED PLASTIC ELEMENTS, AND THERMOFORMING DEVICE SUITABLE FOR THIS
EP0376211B1 (en) * 1988-12-27 1994-06-08 Idemitsu Petrochemical Co. Ltd. Method of forming an articale out of a themoplastic resin sheet
DE4116337C2 (en) * 1991-05-18 1994-01-27 Hatto Dipl Ing Hartnagel Process for producing thin-walled moldings from partially crystalline thermoplastic material, in particular polyolefin, such as polypropylene, by thermoforming, and device for carrying out this process
DE10327741A1 (en) * 2003-06-18 2005-01-13 Fagerdala Deutschland Gmbh Swiveling vehicle sun visor manufacture involves heating extruded polypropylene foam sheet to a specific temperature, press molding while applying vacuum and cutting shells from sheet
DE102016120339A1 (en) * 2016-10-25 2018-04-26 Prominent Gmbh Process for the preparation of a shaped membrane

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH258231A (en) * 1946-04-13 1948-11-30 Durazzo Santos Paul Space heater.
US2642627A (en) * 1950-10-27 1953-06-23 Julius W Mann Method of heating the interior of plastic preforms
US3042972A (en) * 1960-06-24 1962-07-10 Koppers Co Inc Process of manufacturing articles having outer foamed portions
FR1549532A (en) * 1967-11-02 1968-12-13
BE775844A (en) * 1970-12-04 1972-05-26 Shell Int Research
US3979491A (en) * 1971-11-24 1976-09-07 Continental Can Company, Inc. Process for the manufacture of an oriented container
US4039609A (en) * 1972-10-25 1977-08-02 Bellaplast Gmbh Method for the manufacture of thin-walled shaped articles of thermoplastic material
DE2328368B2 (en) * 1973-06-04 1977-12-22 Bellaplast Gmbh, 6200 Wiesbaden THERMO FORMING DEVICE FOR THE PRODUCTION OF MOLDINGS OF LARGE DEPTH FROM A RELATIVELY THICK PLASTIC STRIP
DE2252219B2 (en) * 1972-10-25 1978-02-16 Bellaplast Gmbh, 6200 Wiesbaden METHOD AND DEVICE FOR PRODUCING THIN-WALLED MOLDINGS FROM THERMOPLASTIC PLASTIC
DE2344866A1 (en) * 1973-09-06 1975-03-20 Bellaplast Gmbh METHOD AND DEVICE FOR MANUFACTURING MOLDINGS BY THERMOFORMING
US3934743A (en) * 1972-12-29 1976-01-27 American Can Company Blow molded, oriented plastic bottle and method for making same
US3786221A (en) * 1973-03-29 1974-01-15 American Can Co Method for heat treating a polar, dielectric parison
CA1080416A (en) * 1974-10-31 1980-07-01 Robert P. Noonan Oriented containers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002142A1 (en) * 1983-11-11 1985-05-23 A.A.R.C. (Management) Pty. Limited Molten thermoplastic web feeding process and apparatus
EP0471528A1 (en) * 1990-08-12 1992-02-19 Polysheet (Ireland) Limited A method and apparatus for forming an article of PET material
US5614145A (en) * 1990-08-12 1997-03-25 Polysheet (Ireland) Limited Method and apparatus for forming an article of pet material
EP3437834A4 (en) * 2016-03-31 2020-06-10 Toyobo Co., Ltd. Void-containing heat-shrinkable polyester-based film

Also Published As

Publication number Publication date
GB2001576B (en) 1982-03-03
CA1114126A (en) 1981-12-15
DE2830740A1 (en) 1979-02-15
AT370671B (en) 1983-04-25
JPS5440870A (en) 1979-03-31
SE423878B (en) 1982-06-14
FR2398593B1 (en) 1984-04-13
BE869217A (en) 1979-01-24
SE7807756L (en) 1979-01-26
CA1114125A (en) 1981-12-15
IT7826034A0 (en) 1978-07-24
DE2830788A1 (en) 1979-02-15
IT7826035A0 (en) 1978-07-24
FR2398592A1 (en) 1979-02-23
ES471997A1 (en) 1979-02-16
NL7807832A (en) 1979-01-29
ATA508878A (en) 1982-09-15
FR2398593A1 (en) 1979-02-23
ZA784183B (en) 1979-07-25
IT1097332B (en) 1985-08-31
NL7807831A (en) 1979-01-29
ATA508778A (en) 1982-09-15
ZA784184B (en) 1979-07-25
DE2830740C2 (en) 1985-11-07
FR2398592B1 (en) 1984-04-20
GB2001577B (en) 1982-01-13
GB2001576A (en) 1979-02-07
AR215724A1 (en) 1979-10-31
IT1097331B (en) 1985-08-31
AT370672B (en) 1983-04-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940724