JPS649719A - Thermoforming method - Google Patents

Thermoforming method

Info

Publication number
JPS649719A
JPS649719A JP16469587A JP16469587A JPS649719A JP S649719 A JPS649719 A JP S649719A JP 16469587 A JP16469587 A JP 16469587A JP 16469587 A JP16469587 A JP 16469587A JP S649719 A JPS649719 A JP S649719A
Authority
JP
Japan
Prior art keywords
mold
plastic sheet
sheet
recessed section
jet
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
JP16469587A
Other languages
Japanese (ja)
Other versions
JPH0544901B2 (en
Inventor
Chihiro Sakamaki
Takeo Kato
Takeo Tomatsuri
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.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP16469587A priority Critical patent/JPS649719A/en
Publication of JPS649719A publication Critical patent/JPS649719A/en
Publication of JPH0544901B2 publication Critical patent/JPH0544901B2/ja
Granted 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
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • B29C51/06—Combined thermoforming and prestretching, e.g. biaxial stretching using pressure difference for prestretching

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To manufacture a balanced molded part in excellent thickness by previously forming a heated sheet to a shape approximating to a recessed section in a mold by a specific air injection nozzle before the sheet is vacuum- molded. CONSTITUTION:Air is injected from a jet 5 for a plug 1. Blast air pressure from the jet 5 for the plug 1 is increased, and a plastic sheet 2 is spread. Blast air pressure is increased, and the plastic sheet 2 is introduced into a recessed section in a mold 3, and formed to a shape approximating to the recessed section in the mold 3. Air in the mold 3 is discharged, And a molded part in uniform film thickness is acquired through vacuum molding. The plastic sheet is to some extent completed before vacuum molding, and brought into contact with the mold, thus preventing a partial contact with the mold 3 of the plastic sheet before molding and the cooling of the plastic sheet and the formation of a thick section.
JP16469587A 1987-07-01 1987-07-01 Thermoforming method Granted JPS649719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16469587A JPS649719A (en) 1987-07-01 1987-07-01 Thermoforming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16469587A JPS649719A (en) 1987-07-01 1987-07-01 Thermoforming method

Publications (2)

Publication Number Publication Date
JPS649719A true JPS649719A (en) 1989-01-13
JPH0544901B2 JPH0544901B2 (en) 1993-07-07

Family

ID=15798111

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16469587A Granted JPS649719A (en) 1987-07-01 1987-07-01 Thermoforming method

Country Status (1)

Country Link
JP (1) JPS649719A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317739A (en) * 1988-06-17 1989-12-22 Iwai Kikai Kogyo Kk Auxiliary plug molding method in plastic molding
JPH01317738A (en) * 1988-06-17 1989-12-22 Iwai Kikai Kogyo Kk Auxiliary plug molding method in plastic molding and auxiliary plug
JPH0428526A (en) * 1990-05-24 1992-01-31 Gifu Plast Ind Co Ltd Plug of plug-assist molding equipment in molding of thermoplastic resin sheet
JPH06505947A (en) * 1990-12-31 1994-07-07 メガ・サービス・ディ・アンジェロ・マストロパスクア・エ・チ・エッセ・エンネ・チ A device that forms a bundle of boxes produced using a folding and gluing or stitching machine and packs them with a band.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813336A (en) * 1981-07-15 1983-01-25 有限会社横浜フイツシユセンタ− Transportation of live fish

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813336A (en) * 1981-07-15 1983-01-25 有限会社横浜フイツシユセンタ− Transportation of live fish

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01317739A (en) * 1988-06-17 1989-12-22 Iwai Kikai Kogyo Kk Auxiliary plug molding method in plastic molding
JPH01317738A (en) * 1988-06-17 1989-12-22 Iwai Kikai Kogyo Kk Auxiliary plug molding method in plastic molding and auxiliary plug
JPH0428526A (en) * 1990-05-24 1992-01-31 Gifu Plast Ind Co Ltd Plug of plug-assist molding equipment in molding of thermoplastic resin sheet
JPH06505947A (en) * 1990-12-31 1994-07-07 メガ・サービス・ディ・アンジェロ・マストロパスクア・エ・チ・エッセ・エンネ・チ A device that forms a bundle of boxes produced using a folding and gluing or stitching machine and packs them with a band.

Also Published As

Publication number Publication date
JPH0544901B2 (en) 1993-07-07

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