发明名称 |
Production method of an acoustic diaphragm, acoustic diaphragm, and a speaker |
摘要 |
A method of producing an acoustic diaphragm includes forming a workpiece having a shape of the acoustic diaphragm by using a natural material which can be carbonized by burning; forming a first film including phenol resin on a surface and an interior of the workpiece; heating the workpiece to bring the phenol resin into a high polymer state; burning the workpiece in a substantially anoxic atmosphere to carbonize the workpiece and the first film; and forming a second film including gelatin on at least one of a surface and an interior of carbonized workpiece.
|
申请公布号 |
US2008257638(A1) |
申请公布日期 |
2008.10.23 |
申请号 |
US20080078530 |
申请日期 |
2008.04.01 |
申请人 |
|
发明人 |
SUZUKI YOSHIAKI;TANAKA YOSHIAKI;HIROSE SHINICHI |
分类号 |
H04R7/02;B05D3/02 |
主分类号 |
H04R7/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|