| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide a sound absorbing material which has high sound absorbing performances, is thin and light and has excellent shape stability. SOLUTION: This sound absorbing material is a laminate obtained by integrally laminating a nonwoven fabric which comprises an extra fine fiber having≤10μm fiber diameter and has 20-200 g/m<SP>2</SP>weight to a nonwoven fabric which is formed of a fiber having 10-50μm fiber diameter and which has 50-2,000 g/m<SP>2</SP>weight in which≥90% of the laminate is formed of a polyolefin having≤180°C melting point. The laminate is stuck to a polyolefin-based plate or a molding material by using a polyolefin-based adhesive tape. COPYRIGHT: (C)2004,JPO
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