JPS6467099A - Diaphragm for acoustic equipment - Google Patents
Diaphragm for acoustic equipmentInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-09-07 JP JP62223406A patent/JP2563368B2/en not_active Expired - Lifetime
Patent Citations (3)
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)
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 |