发明授权
- 专利标题: Soundproof material
- 专利标题(中): 隔音材料
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申请号: US11562075申请日: 2006-11-21
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公开(公告)号: US07690480B2公开(公告)日: 2010-04-06
- 发明人: Masahiko Mori , Akimasa Tanaka
- 申请人: Masahiko Mori , Akimasa Tanaka
- 申请人地址: JP
- 专利权人: Toyota Boshoku Kabushiki Kaisha
- 当前专利权人: Toyota Boshoku Kabushiki Kaisha
- 当前专利权人地址: JP
- 代理机构: Caesar, Rivise, Bernstein, Cohen & Pokotilow, Ltd.
- 优先权: JP2005-347053 20051130
- 主分类号: E04B1/82
- IPC分类号: E04B1/82
摘要:
A soundproof material is provided with a first sound absorbing layer arranged on a vehicle panel, a second sound absorbing layer closer to an inner side of a passenger compartment, and an intermediate layer provided between the sound absorbing layers. The intermediate layer is constituted by two layers having a high-density layer and a low-density layer. The air permeability of the intermediate layer is set lower than the first sound absorbing layer and the second sound absorbing layer. The intermediate layer is arranged in such a manner that the high-density layer is adjacent to the second sound absorbing layer.
公开/授权文献
- US20070119651A1 SOUNDPROOF MATERIAL 公开/授权日:2007-05-31
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