JPS5638215A - Thermoforming method for plastic sheet - Google Patents

Thermoforming method for plastic sheet

Info

Publication number
JPS5638215A
JPS5638215A JP11483779A JP11483779A JPS5638215A JP S5638215 A JPS5638215 A JP S5638215A JP 11483779 A JP11483779 A JP 11483779A JP 11483779 A JP11483779 A JP 11483779A JP S5638215 A JPS5638215 A JP S5638215A
Authority
JP
Japan
Prior art keywords
die
heating
plastic sheet
compressed
sheet
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.)
Pending
Application number
JP11483779A
Other languages
Japanese (ja)
Inventor
Takao Yamada
Hiroshi Hibi
Norio Yoshiga
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.)
Mitsubishi Plastics Inc
Original Assignee
Mitsubishi Plastics Inc
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 Mitsubishi Plastics Inc filed Critical Mitsubishi Plastics Inc
Priority to JP11483779A priority Critical patent/JPS5638215A/en
Publication of JPS5638215A publication Critical patent/JPS5638215A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a themoforming product which is free from shrinkage at the time when it is taken out and has an accurate form by a method wherein a plastic sheet is formed along a heating die and then undergoes heat treatment and a formed article thus obtained is transferred into a cooling die corresponding to the heating die to be cooled.
CONSTITUTION: After being heated up to the forming temperature by a heating device 4, a plastic sheet 1 is placed on the upper surface of a compressed-air chamber 5. Next, a heating die 2 being lowered, the sheet 1 is set in a position between the die 2 and the compressed-air chamber 5, and then the compressed air is sent in along an arrow and the sheet 1 is formed from a position (a) to a position (b) along the heating die 2. A formed article thus obtained undergoes heat treatment for a fixed time in the compressed air preserved. Then, a cooling die 3 having a form corresponding to the heatind die 2 is elevated inside the chamber 5 and is made fitted to the heating die 2 in its position C. Then, by discharging the compressed air in the direction of an arrow, the formed article is transferred to and made to contact with the cooling die 3 naturally and fittedly by its own force of shrinkage to be cooled thereby.
COPYRIGHT: (C)1981,JPO&Japio
JP11483779A 1979-09-07 1979-09-07 Thermoforming method for plastic sheet Pending JPS5638215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11483779A JPS5638215A (en) 1979-09-07 1979-09-07 Thermoforming method for plastic sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11483779A JPS5638215A (en) 1979-09-07 1979-09-07 Thermoforming method for plastic sheet

Publications (1)

Publication Number Publication Date
JPS5638215A true JPS5638215A (en) 1981-04-13

Family

ID=14647931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11483779A Pending JPS5638215A (en) 1979-09-07 1979-09-07 Thermoforming method for plastic sheet

Country Status (1)

Country Link
JP (1) JPS5638215A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605697A (en) * 1983-06-23 1985-01-12 Pioneer Electronic Corp Manufacture of acoustic diaphragm
JPS62270319A (en) * 1986-05-20 1987-11-24 Honda Motor Co Ltd Method and device for vacuum laminate
JPS63134718U (en) * 1987-02-25 1988-09-05
US5618486A (en) * 1995-05-16 1997-04-08 Sekisui Plastics Co., Ltd. Process for manufacturing a heat-resistant molded foam product
JP2001162676A (en) * 1999-12-08 2001-06-19 Mitsubishi Plastics Ind Ltd Polylactic acid molding and its molding method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443971A (en) * 1977-09-13 1979-04-06 Daiafoil Method of making polyester moldings

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443971A (en) * 1977-09-13 1979-04-06 Daiafoil Method of making polyester moldings

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605697A (en) * 1983-06-23 1985-01-12 Pioneer Electronic Corp Manufacture of acoustic diaphragm
JPS62270319A (en) * 1986-05-20 1987-11-24 Honda Motor Co Ltd Method and device for vacuum laminate
JPS63134718U (en) * 1987-02-25 1988-09-05
US5618486A (en) * 1995-05-16 1997-04-08 Sekisui Plastics Co., Ltd. Process for manufacturing a heat-resistant molded foam product
JP2001162676A (en) * 1999-12-08 2001-06-19 Mitsubishi Plastics Ind Ltd Polylactic acid molding and its molding method

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