| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor sound absorbing material having characteristic for achieving excellent walking comfortableness by a direct flooring sound absorbing flooring material while maintaining excellent sound isolation and soundproof performance. SOLUTION: This floor sound absorbing material 3 includes an impervious layer 7, a shock absorbing layer 6 provided on the impervious layer, a cured layer provided on the shock absorbing layer, and dot-like or line-like resin compositions 8, 9. (a) The impervious layer 7 is formed by spun bond for non-heat fusion fibers; (b) the shock absorbing layer 6 is made of heat fusion fibers of 0-50 wt.% and non-heat fusion fibers of 50-100 wt.% and is made of a nonwoven fabric layer in which heat fusion fibers are mutually heat fused by heat treatment when needle punching is applied and the heat fusion fibers are blended; (c) the cured layer comprises 10-100 wt.% heat-fusion fiber and 0-90 wt.% non-heat fusion fiber, needle punching is applied, and comprises a non-woven fabric layer in which heat fusion fibers are mutually heat-fused by heat treatment; and the dot-like or line-like resin compositions 8, 9 exist in either of the impervious layer and the shock absorbing layer at a ratio of 20-400 g/m<SP>2</SP>in case of the dot-like resin composition and a ratio of 40-400 g/m<SP>2</SP>in case of the line-like resin composition. COPYRIGHT: (C)2010,JPO&INPIT |
