| 发明名称 |
Acoustic paper diaphragm and acoustic transducer apparatus |
| 摘要 |
An acoustic paper diaphragm excellent in moisture resistance and acoustic characteristics and not impairing the biodegradability is provided. An acoustic paper diaphragm is formed of paper in which polylactide resin emulsion that is a biodegradable polymeric material is internally added as a sizing agent.
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| 申请公布号 |
US2005211402(A1) |
申请公布日期 |
2005.09.29 |
| 申请号 |
US20050081626 |
申请日期 |
2005.03.17 |
| 申请人 |
SONY CORPORATION |
发明人 |
URYU MASARU;TOKURA KUNIHIKO |
| 分类号 |
H04R7/02;B32B29/00;D06M15/00;D21H17/37;D21H17/46;D21H19/24;D21H21/16;H04R1/00;H04R7/00;H04R31/00;(IPC1-7):D21H21/16 |
主分类号 |
H04R7/02 |
| 代理机构 |
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