| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound insulation floor structure which is capable of suppressing sinking of a floor material due to walking, is capable of providing an excellent walking feeling, prevents vibrations propagated through a joist for a sound insulation performance for floor impact sound, and has the higher sound insulation performance for the floor impact sound. <P>SOLUTION: A sound insulation floor constitution material 10 includes: a hard layer 15; joists 13 which are disposed in parallel at an interval on one surface of the hard layer 15, and are partially nonwoven fiber structures; and layers 14 to be compressed, which are disposed alternately and adjacently with the joists 13, and have a thickness greater than the joists. The sound insulation floor structure may be formed by interposing the sound insulation floor constitution material 10 between a floor base material and a floor finishing layer, and the layers 14 to be compressed are compressed to the thickness of the joists in the sound insulation floor structure. The layers 14 to be compressed may be formed by the nonwoven fiber structure whose thickness is 3 to 60 mm and apparent density is 0.03 to 0.2 g/cm<SP POS="POST">3</SP>. <P>COPYRIGHT: (C)2012,JPO&INPIT |
