| 摘要 |
A sound absorbing-insulating structure for vehicles comprises a sound absorbing layer which contains cellulose fibers containing cotton yarns, pulp fibers, etc. and synthetic resin as principal components. The sound absorbing-insulating structure for vehicles, in which a content rate of the synthetic resin is in the range of 0.01 to 80 wt %, and a surface density is in the range of 0.2 to 3 kg/m<2>, is provided. This sound absorbing-insulating structure has the good sound absorbing-insulating characteristic and is light in weight and inexpensive in cost. <IMAGE> |
