发明名称 |
METHOD FOR PRODUCING MEMBRANES FOR ELECTROACOUSTIC TRANSDUCERS AND MEMBRANES OBTAINED BY THIS METHOD |
摘要 |
<p>A diaphragm for an electroacoustic transducer has a) a core layer containing poly(meth)acrylimide foam and b) at least one cover layer. The diaphragm is produced by laminating the cover layer with the core layer, using a pressure of 0.4 MPa and a temperature of 160° C., whereby at least the side of the core layer which comes into contact with the cover layer is compressed. The resultant composite is subsequently cooled to a temperature below 80° C., before the pressure is reduced to the ambient pressure. The process can be carried out as a single-step process. The diaphragms produced by this process demonstrate an excellent stability, whereby the cover layers in particular are highly resistant to separation.</p> |
申请公布号 |
EP1183904(B1) |
申请公布日期 |
2003.10.22 |
申请号 |
EP20000935105 |
申请日期 |
2000.05.24 |
申请人 |
ROEHM GMBH & CO. KG |
发明人 |
ROOSEN, DIRK;MAIER, LEONHARD;SEIBERT, HERMANN |
分类号 |
B32B37/18;H04R7/12;H04R31/00;(IPC1-7):H04R7/10;B32B31/20 |
主分类号 |
B32B37/18 |
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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