JPS6467099A - Diaphragm for acoustic equipment - Google Patents

Diaphragm for acoustic equipment

Info

Publication number
JPS6467099A
JPS6467099A JP22340687A JP22340687A JPS6467099A JP S6467099 A JPS6467099 A JP S6467099A JP 22340687 A JP22340687 A JP 22340687A JP 22340687 A JP22340687 A JP 22340687A JP S6467099 A JPS6467099 A JP S6467099A
Authority
JP
Japan
Prior art keywords
diaphragm
film
ethylene glycol
dicarboxylic acid
speaker
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
JP22340687A
Other languages
Japanese (ja)
Other versions
JP2563368B2 (en
Inventor
Kazuro Okuzawa
Tomoyasu Takase
Keiichi Saito
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62223406A priority Critical patent/JP2563368B2/en
Publication of JPS6467099A publication Critical patent/JPS6467099A/en
Application granted granted Critical
Publication of JP2563368B2 publication Critical patent/JP2563368B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To obtain a speaker good in a sound quality in a wide band by forming a polyester film constituted of naphthalene dicarboxylic acid and ethylene glycol. CONSTITUTION:A diaphragm 8 is obtained by heating the film consisting of the naphthalene dicarboxylic acid and the ethylene glycol, in more detail, consisting of polyethylene 2,6 naphthalate resin having a naphthalene ring in a molecular chain at the temperature of 180 deg.C-230 deg.C, molding and pressing by a metal mod heated to 20 deg.C-50 deg.C. This film diaphragm 8 has a rigidity higher than a polyester film and a large internal loss irrespective thereof, even when the thickness of the film is thinned, the division resonance of the diaphragm is reduced to widen the reproducing band of the sound and improve a frequency characteristic. Thereby, the excellent diaphragm for a speaker can be obtained.
JP62223406A 1987-09-07 1987-09-07 Diaphragm for audio equipment Expired - Lifetime JP2563368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62223406A JP2563368B2 (en) 1987-09-07 1987-09-07 Diaphragm for audio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62223406A JP2563368B2 (en) 1987-09-07 1987-09-07 Diaphragm for audio equipment

Publications (2)

Publication Number Publication Date
JPS6467099A true JPS6467099A (en) 1989-03-13
JP2563368B2 JP2563368B2 (en) 1996-12-11

Family

ID=16797644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62223406A Expired - Lifetime JP2563368B2 (en) 1987-09-07 1987-09-07 Diaphragm for audio equipment

Country Status (1)

Country Link
JP (1) JP2563368B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1429582A2 (en) * 2002-12-09 2004-06-16 Onkyo Corporation Loudspeaker diaphragm and method for manufacturing the same
US8742061B2 (en) 2005-10-27 2014-06-03 Toray Industries, Inc. Polyarylene sulfide film

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045877A (en) * 1973-08-29 1975-04-24
JPS5516365A (en) * 1978-07-20 1980-02-05 Yuasa Battery Co Ltd Alkaline cell
JPS62263797A (en) * 1986-05-09 1987-11-16 Matsushita Electric Ind Co Ltd Diaphragm for speaker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045877A (en) * 1973-08-29 1975-04-24
JPS5516365A (en) * 1978-07-20 1980-02-05 Yuasa Battery Co Ltd Alkaline cell
JPS62263797A (en) * 1986-05-09 1987-11-16 Matsushita Electric Ind Co Ltd Diaphragm for speaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1429582A2 (en) * 2002-12-09 2004-06-16 Onkyo Corporation Loudspeaker diaphragm and method for manufacturing the same
US7631723B2 (en) * 2002-12-09 2009-12-15 Onkyo Corporation Loudspeaker diaphragm and method for manufacturing the same
US8742061B2 (en) 2005-10-27 2014-06-03 Toray Industries, Inc. Polyarylene sulfide film

Also Published As

Publication number Publication date
JP2563368B2 (en) 1996-12-11

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term