| 摘要 |
A noise prevention device for impact absorption is provided to reduce an inter-floor noise by reducing the impact generated between a finishing mortar layer and a bottom structure. A noise prevention device(100) for impact absorption includes a first noise prevention device(110), and a second noise prevention device(120). The first noise prevention device is formed in a predetermined thickness through a foaming process. A plurality of impact sound dispersion grooves(112,122) of a predetermined thickness are formed at regular intervals of front/rear or left/right on a plane of a flat plate having cushion, soundproof, and insulation characteristics. The second noise prevention is formed in a predetermined thickness through a foaming process. The plurality of impact sound dispersion grooves of the predetermined thickness are formed at regular intervals of front/rear or left/right on the plane of the flat plate having cushion, soundproof, and insulation characteristics. The planes having the dispersion grooves of the first noise prevention device and the second noise prevention device are bonded by an adhesive to be opposite to each other. The dispersion grooves absorb an impact transferred from an upper part, and reduce impact noise by diffusing the vertical impact noise from the upper part to a horizontal direction through the dispersion grooves of the first noise prevention device and the second noise prevention device. |
