| 摘要 |
PURPOSE: An interlayer noise reduction panel is provided to improve uniformity and convenience of construction by improving the smoothness of the finishing mortar on the upper part of a slab. CONSTITUTION: An interlayer noise reduction panel(30) comprises a case(34,36) and a sound insulator(14). The case is formed in a sheet shape of the constant area and thickness. The case divides the inside. The sound insulator is charged at fixed pressure by maintaining the particle status inside the case. The sound insulator is made of one or more materials among organic material fragment inorganic material fragment, metal material fragment, fiber fragment, and fiber. |
