Invention Grant
- Patent Title: Sound-absorbing material, production method for sound-absorbing material, and sound-absorbing structure
- Patent Title (中): 吸声材料，吸音材料的制作方法和吸音结构
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Application No.: US12182515Application Date: 2008-07-30
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Publication No.: US07789196B2Publication Date: 2010-09-07
- Inventor: Chie Fukuhara , Naoko Yorozu , Eiji Murasawa , Tsuyoshi Sugihara
- Applicant: Chie Fukuhara , Naoko Yorozu , Eiji Murasawa , Tsuyoshi Sugihara
- Applicant Address: JP
- Assignee: Mazda Motor Corporation
- Current Assignee: Mazda Motor Corporation
- Current Assignee Address: JP
- Agency: Studebaker & Brackett PC
- Agent Donald R. Studebaker
- Priority: JP2007-203931 20070806
- Main IPC: E04B1/82
- IPC: E04B1/82 ; E04B1/84
Abstract:
Disclosed is a sound-absorbing material, which has a flow resistivity R of 3.3×104 N·s/m4 or more, a Young's modulus E of 1.2×103 to 2.0×104 N/m2, and a loss factor δ of 0.12 or less. The sound-absorbing material of the present invention can enhance a sound absorption capability in a wide range of a low/intermediate-frequency region to a high-frequency region at a higher level as compared with conventional sound-absorbing materials.
Public/Granted literature
- US20090038881A1 SOUND-ABSORBING MATERIAL, PRODUCTION METHOD FOR SOUND-ABSORBING MATERIAL, AND SOUND-ABSORBING STRUCTURE Public/Granted day:2009-02-12
Information query
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