发明名称 |
Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof |
摘要 |
<p>In order to provide a sound absorbing material superior in acid resistance, alkali resistance and sound absorbing quality and a sound absorbing layer using this sound absorbing material, multiple pieces of basalt yarn (1a) obtained by dissolving basalt to be continuous fibers are bundled by a fiber bundling agent to acquire a bundled material (1), and the bundled material (1) is fibrillated to obtain a bulky sound absorbing material (2). Moreover, the sound absorbing material (2) is arranged on the outer periphery of a perforated pipe (4) constituting a muffler to form a sound absorbing layer (6). <IMAGE></p> |
申请公布号 |
EP1217184(A1) |
申请公布日期 |
2002.06.26 |
申请号 |
EP20000127435 |
申请日期 |
2000.12.14 |
申请人 |
NAKAGAWA SANGYO CO., LTD.;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
NAKAGAWA, YUKIHIRO |
分类号 |
F01N1/24;(IPC1-7):F01N1/24 |
主分类号 |
F01N1/24 |
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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