发明名称 |
SOUND-ABSORBING HOLLOW BODY FOR AN AIR SUPPLY |
摘要 |
Hollow bodies for an air supply often prove unsatisfactory in terms of their sonic properties or their dirt accumulation behaviour. The invention relates to a sound-absorbing hollow body for an air supply, comprising a first external layer consisting of closed-cell polyolefin foam, a second internal layer consisting of closed-cell polyolefin foam and at least one additional layer, located between the internal and external layer and having a surface structure consisting of fibres, in particular a nonwoven. The inventive sound-absorbing hollow bodies are used in particular in the motor vehicle industry for air supplies. |
申请公布号 |
WO2004007108(A3) |
申请公布日期 |
2004.04.01 |
申请号 |
WO2003EP50299 |
申请日期 |
2003.07.09 |
申请人 |
TROCELLEN GMBH;BREITSCHEIDEL, ULRICH;ULB, HORST |
发明人 |
BREITSCHEIDEL, ULRICH;ULB, HORST |
分类号 |
B21D;B29C49/00;B32B27/32;F01N1/24;F01N13/16;F02M35/12;F16L9/21;F16L55/02;F16L55/033 |
主分类号 |
B21D |
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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