发明名称 |
Method of using a sound damping composition |
摘要 |
The invention concerns a method of using constrained layer sound damping. A composition and a laminated structure are provided for the reduction of noise coming from housings such as oil pans for automobiles. The composition comprises a rubbery polyurethane, an olefin polymer, and a filler. The laminated structure comprises the housing, the composition, and a sheet metal liner. The composition contains a blowing agent which is activated to provide a single unitary structure which dampens noise. The polyurethane and olefin polymer are thoroughly intermixed with each other, but maintain their separate identities in the blend.
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申请公布号 |
US5143755(A) |
申请公布日期 |
1992.09.01 |
申请号 |
US19900573370 |
申请日期 |
1990.08.27 |
申请人 |
SOUNDWICH, INC. |
发明人 |
MOORE, III, DAN T.;COLLINS, EDWARD A.;WHEELER, MAURICE E. |
分类号 |
F01M11/00;F02F7/00;G10K11/168 |
主分类号 |
F01M11/00 |
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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