| 摘要 |
PURPOSE: A noise insulation sheet for reducing floor impact noise is provided to improve noise insulation performance and durability by reducing dynamic elastic modulus. CONSTITUTION: A noise insulation sheet for reducing floor impact noise includes a board(100), a rugged part(200), and a reinforcement material(300). Expanded polystyrene, polyethylene, and ethylene vinyl acetate, and etc are foamed to form the board. The rugged part is formed in one side of the board and has multiple grooves(210) and ridges(220). The reinforcement material is inserted in the rugged part. The reinforcement material comprises multiple reinforcement pins(310) to prevent durability degradation of the board.
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