发明名称 |
Loudspeaker and method for the preperation thereof |
摘要 |
A loudspeaker in which the input resistance is improved and the effect of humidity on the playback frequency response is suppressed, and a method for the preparation of the loudspeaker. A sheet-like product, containing glass particles with a particle size of 8nm to 300 nm and polyamide resin, and prepared by application of a paper-making technique, is used as the diaphragm. The content of the glass particles in the compound material is 5 weight % to 70 weight %. In preparing the diaphragm, a phase of an aqueous solution containing diamine and water glass is contacted with a phase of an organic solution containing a dicarboxylic acid halide to generate a compound material containing glass particles and the polyamide resin. The compound material so prepared is formed into a sheet by a paper-making technique. In the process of the preparation by the paper-making technique, the compound material mixed with other fibrous material may also be used as a starting material. |
申请公布号 |
EP1146770(A3) |
申请公布日期 |
2006.10.11 |
申请号 |
EP20010109062 |
申请日期 |
2001.04.11 |
申请人 |
SONY CORPORATION;DAINIPPON INK AND CHEMICALS, INC. |
发明人 |
URYU, MASARU;TOKURA, KUNIHIKO;OHASHI, YOSHIO;IDEMURA, SATOSHI;NAKASHIMA, MICHIYA;TAKAHASHI, KATSUJI |
分类号 |
C08J5/24;H04R7/00;C08K7/02;C08K7/20;C08L77/00;D21H13/26;D21H13/40;D21H27/12;H04R1/10;H04R7/02;H04R31/00 |
主分类号 |
C08J5/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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