Invention Grant
- Patent Title: Soundproof material
- Patent Title (中): 隔音材料
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Application No.: US11562075Application Date: 2006-11-21
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Publication No.: US07690480B2Publication Date: 2010-04-06
- Inventor: Masahiko Mori , Akimasa Tanaka
- Applicant: Masahiko Mori , Akimasa Tanaka
- Applicant Address: JP
- Assignee: Toyota Boshoku Kabushiki Kaisha
- Current Assignee: Toyota Boshoku Kabushiki Kaisha
- Current Assignee Address: JP
- Agency: Caesar, Rivise, Bernstein, Cohen & Pokotilow, Ltd.
- Priority: JP2005-347053 20051130
- Main IPC: E04B1/82
- IPC: E04B1/82

Abstract:
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.
Public/Granted literature
- US20070119651A1 SOUNDPROOF MATERIAL Public/Granted day:2007-05-31
Information query
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