GB2001577A - Manufacturing thin- walled articles - Google Patents
Manufacturing thin- walled articlesInfo
- 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
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.
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)
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)
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)
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 |
-
1978
- 1978-07-12 SE SE7807756A patent/SE423878B/en unknown
- 1978-07-13 DE DE2830740A patent/DE2830740C2/en not_active Expired
- 1978-07-13 AT AT0508878A patent/AT370672B/en not_active IP Right Cessation
- 1978-07-13 DE DE19782830788 patent/DE2830788A1/en not_active Ceased
- 1978-07-13 AT AT0508778A patent/AT370671B/en not_active IP Right Cessation
- 1978-07-21 GB GB787830719A patent/GB2001576B/en not_active Expired
- 1978-07-24 CA CA308,018A patent/CA1114125A/en not_active Expired
- 1978-07-24 BE BE189459A patent/BE869217A/en not_active IP Right Cessation
- 1978-07-24 NL NL7807831A patent/NL7807831A/en not_active Application Discontinuation
- 1978-07-24 CA CA308,019A patent/CA1114126A/en not_active Expired
- 1978-07-24 ZA ZA00784183A patent/ZA784183B/en unknown
- 1978-07-24 IT IT26034/78A patent/IT1097332B/en active
- 1978-07-24 ZA ZA00784184A patent/ZA784184B/en unknown
- 1978-07-24 ES ES471997A patent/ES471997A1/en not_active Expired
- 1978-07-24 GB GB787830874A patent/GB2001577B/en not_active Expired
- 1978-07-24 IT IT26035/78A patent/IT1097331B/en active
- 1978-07-24 NL NL7807832A patent/NL7807832A/en not_active Application Discontinuation
- 1978-07-25 AR AR273068A patent/AR215724A1/en active
- 1978-07-25 JP JP9005378A patent/JPS5440870A/en active Pending
- 1978-07-25 FR FR7821924A patent/FR2398592A1/en active Granted
- 1978-07-25 FR FR7821925A patent/FR2398593A1/en active Granted
Cited By (4)
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 |