JPS6444224A - Cold bulging method for resin laminated aluminum foil - Google Patents

Cold bulging method for resin laminated aluminum foil

Info

Publication number
JPS6444224A
JPS6444224A JP62201427A JP20142787A JPS6444224A JP S6444224 A JPS6444224 A JP S6444224A JP 62201427 A JP62201427 A JP 62201427A JP 20142787 A JP20142787 A JP 20142787A JP S6444224 A JPS6444224 A JP S6444224A
Authority
JP
Japan
Prior art keywords
top face
area
punch
recessed part
aluminum foil
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
JP62201427A
Other languages
Japanese (ja)
Other versions
JP2666908B2 (en
Inventor
Masashi Sakaguchi
Tomoaki Yamanoi
Hideo Kawai
Susumu Takada
Koji Minamitani
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum Corp
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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP62201427A priority Critical patent/JP2666908B2/en
Publication of JPS6444224A publication Critical patent/JPS6444224A/en
Application granted granted Critical
Publication of JP2666908B2 publication Critical patent/JP2666908B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To reduce a slide resistance at recessed part and to increase a critical height by forming a recessed part on the punch top face and executing cold bulging by using the punch limiting the percentage occupied on the whole top face of the recessed part as well. CONSTITUTION:In case of cold bulging, a resin laminated aluminum foil by a punch, the forming is executed by using the punch 1 that the area of the opening part 3a of a recessed part 3 formed on the top face 2 of the punch 1 is >=30% of the area of the whole top face. At this time, when the area of the opening part 3a of the recessed part 3 is smaller, the contact area of a blank sheet 5 and top face 2 becomes larger, the slide resistance is increased as well and the estimated aim can't be achieved. Consequently the area of the opening part 3a must be secured at >=30% of the area of the whole top face.
JP62201427A 1987-08-11 1987-08-11 Cold stretch forming method of resin laminated aluminum foil Expired - Fee Related JP2666908B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201427A JP2666908B2 (en) 1987-08-11 1987-08-11 Cold stretch forming method of resin laminated aluminum foil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201427A JP2666908B2 (en) 1987-08-11 1987-08-11 Cold stretch forming method of resin laminated aluminum foil

Publications (2)

Publication Number Publication Date
JPS6444224A true JPS6444224A (en) 1989-02-16
JP2666908B2 JP2666908B2 (en) 1997-10-22

Family

ID=16440903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201427A Expired - Fee Related JP2666908B2 (en) 1987-08-11 1987-08-11 Cold stretch forming method of resin laminated aluminum foil

Country Status (1)

Country Link
JP (1) JP2666908B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001340926A (en) * 2000-05-31 2001-12-11 Showa Denko Kk Cold bulging method of resin laminated aluminum foil

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149033A (en) * 1981-02-13 1982-09-14 American Can Co Tool for molding vessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149033A (en) * 1981-02-13 1982-09-14 American Can Co Tool for molding vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001340926A (en) * 2000-05-31 2001-12-11 Showa Denko Kk Cold bulging method of resin laminated aluminum foil

Also Published As

Publication number Publication date
JP2666908B2 (en) 1997-10-22

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees