EXPANDED POLYSTYLENE LAYER AND FLOOR IMPACT SOUND ABSORBING PANEL WITH THE SAME

摘要

PURPOSE: A floor impact sound absorbing panel having an expanded polystyrene layer is provided to improve floor impact sound decrease efficiency, lower collapsibility. CONSTITUTION: A floor impact sound absorbing panel having an expanded polystyrene layer comprises a plurality of holes(102) formed to have 60% to 90% space. The expanded polystyrene layer has resilient modulus of 25 to 45. A floor impact sound absorbing panel has the expanded polystyrene layer located on the upper part of a slab layer. A medium density fiberboard which covers a plurality of holes is located on the upper part of the expanded polystyrene layer.