JPS643370A - Manufacture of diaphragm - Google Patents

Manufacture of diaphragm

Info

Publication number
JPS643370A
JPS643370A JP15532187A JP15532187A JPS643370A JP S643370 A JPS643370 A JP S643370A JP 15532187 A JP15532187 A JP 15532187A JP 15532187 A JP15532187 A JP 15532187A JP S643370 A JPS643370 A JP S643370A
Authority
JP
Japan
Prior art keywords
forming
force
cavity
diaphragm
temporarily
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
JP15532187A
Other languages
Japanese (ja)
Other versions
JP2592251B2 (en
Inventor
Hiroyuki Nishikawa
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.)
Nok Corp
Original Assignee
Nok 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 Nok Corp filed Critical Nok Corp
Priority to JP62155321A priority Critical patent/JP2592251B2/en
Publication of JPS643370A publication Critical patent/JPS643370A/en
Application granted granted Critical
Publication of JP2592251B2 publication Critical patent/JP2592251B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Diaphragms And Bellows (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To restrain a based cloth from moving in a cavity and improve durability and a sealing property by forming a cavity gas which is larger than a cavity at the time of temporarily forming on a top force side, between the top force and a bottom force for actual forming. CONSTITUTION:An unbridged rubber 4 is put in between a bottom force 1 and a top force 2 and clamped to carry out temporarily forming in an unbridged condition in a cavity C1. Then, the top force 2 used for the temporarily forming is replaced by a top force 3 and a base cloth 6 is spread on top the temporarily formed unbridged rubber 4 of a diaphragm form on the bottom force 1 and clamped and heated to carry out the actual forming of vulcanizing forming. In this case, since the gap T2 of the cylindrical part C2a of a cavity C2 between the bottom force 1 and the top force 3 is made a little wider to the outside than the gap T1 of the cavity C1 at the time of the temporarily forming, the base cloth 6 is restrained from being drawn in at the time of clamping, obtaining a diaphragm 5 in which the base cloth 6 is uniformly spread and bonded on one side. Thereby, the durability and sealing property of a diaphragm can be improved.
JP62155321A 1987-06-24 1987-06-24 Manufacturing method of diaphragm Expired - Lifetime JP2592251B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62155321A JP2592251B2 (en) 1987-06-24 1987-06-24 Manufacturing method of diaphragm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62155321A JP2592251B2 (en) 1987-06-24 1987-06-24 Manufacturing method of diaphragm

Publications (2)

Publication Number Publication Date
JPS643370A true JPS643370A (en) 1989-01-09
JP2592251B2 JP2592251B2 (en) 1997-03-19

Family

ID=15603333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62155321A Expired - Lifetime JP2592251B2 (en) 1987-06-24 1987-06-24 Manufacturing method of diaphragm

Country Status (1)

Country Link
JP (1) JP2592251B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065111A1 (en) * 2003-01-22 2004-08-05 Tour & Andersson Ab A membrane, a method and die means for manufacturing same
WO2008093030A2 (en) 2007-01-31 2008-08-07 Jacques Regolle Device for storing objects on a mobile pallet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4941451A (en) * 1972-08-30 1974-04-18
JPS6294013U (en) * 1985-11-29 1987-06-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4941451A (en) * 1972-08-30 1974-04-18
JPS6294013U (en) * 1985-11-29 1987-06-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065111A1 (en) * 2003-01-22 2004-08-05 Tour & Andersson Ab A membrane, a method and die means for manufacturing same
WO2008093030A2 (en) 2007-01-31 2008-08-07 Jacques Regolle Device for storing objects on a mobile pallet

Also Published As

Publication number Publication date
JP2592251B2 (en) 1997-03-19

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