| 摘要 |
PURPOSE: A high sound absorption efficiency ceiling material for a vehicle is provided to be lightweight using reinforced fiber and to obtain excellent thermal resistance, moisture resistance, and hydraulic stability. CONSTITUTION: A high sound absorption efficiency ceiling material for a vehicle comprises a base material layer(10), a film layer(20), and a material layer(30). The base material layer comprises of felt with a loop structure. The film layer is formed to the upper surface of the base material layer. The material layer is formed to the upper surface of the film layer. |
